wellsdrilled
0il andgasdiscovery
in NewMexicoin 1983
wells were completed in 1983, down from
1,529completionsin 1982;598of the Permian
Basinwells were completedas oil producers
while 317 were compietedas gas producers
and 263 were plugged and abandoned reNM sulting in a successrate of 78Vo.ln the San
Socorro,
Resources,
F.Eroadhead,
Petroleum
Geologist,
NewMexico
Bureau
of Mrnes
andMineral
byRonald
fuan Basin of northwest New Mexico, 691
Introduction
the New Mexico Oil ConservationDivision wells were completed in 1983, down from
784completionsin 1982;253of the SanJuan
The number of wells drilled for oil and gas indicate that 1,869wells were completedin
in New Mexico in 1983 was less than the
New Mexico in 1983, down 79Voirom the Basinwells were oil producers,338were gas
number of wells drilled for oil and gas in
2,313wells completed in 1982.In the Per- producers,and 100were plugged and abandoned for a successrate of 86%.In addition,
New Mexico in 1982. Statistics obtained from
mian Basin of southeastNew Mexico, t,I78
34 wells were drilled to develop the Bravo
dome carbon dioxide gas field of northeast
I
New Mexico. Several wildcat wells were
I
,t
q u on
drilled to follow up on the 1982discoveryof
I
gas in the Tucumcari Basin. Wildcat wells
Son Juon
Colfox
were plugged in the not-yet-productiveRaOBo
B o't_s i n
ton, Acoma, and Hagan Basinsand in Luna
1_
and Dona Ana Counties of southwest New
Mexico.
L.A:F
Totalfootageof holesdrilled was9,146,148
ft in New Mexico in 1983, down from apM c Ki nt e y
proximately12,000,000
ft drilled in 1982.The
n Mig
iverage depth of wells drilled in 1983was
Hpqor
4,894 ft, approximately300 ft less than the
Bpsin
averagedepth of wells drilled in 1982.The
bblogoshallowerdrilling depths indicate increased
emphasison the developmentof shallow oil
B' 12
Tucum
reservous.
Fig. 1 shows the location of significant
f ry
wells drilled in New Mexico in 1983;
wildcat
I
Table 1 summarizes the significant wildcat
discoveries,and Table2 summarizesthe sigE s to r i c i o
nificant dry holes. For purposes of this reEosin
t__b
Socorro
Cotron
I
Pederno
r
I
Lincoln
I
Alsoin thisissue
u p l i ft I
/ ))
lorfgronde
__l
Eddy
,l
6
O t er o
O
O
50
50
I O Om i
IOO
l5Okm
O O i lw e l l
f r G o sw e l l
Q
$
O - A O ' C o n n e lRl o n c ho n d T - 4 R o n c h s l e o m - O
pilol projects
O - B S o n t o R o s ot o r - s o n d d e p o s i l
D r y h o l ew i t h o i I s h o w
D r y h o l ew i t h g o s s h o w
S i g n i fi c o n l w i l d c o lw e l l sd r i l l i n g ,
n o l c o m p l e l e d o. r " l i g h t " o l e n d
of 1983,
FIGURE l-Significant oil and gas discoveries and wildcat dry holes drilled in New Mexico during
1983.Major geologic featuresare taken from Black (1979),Kottlowski and Stewart (7970),Meyer (1966),
Molenaar(1977),Robertset al. (1976),Thompson et al. (1978),and Woodward et al. (1978).
Villanueva
StatePark
nomenclature
of
Stratigraphic
Socorro
UpperCretaceous,
County,NewMexico
reptile,
Araeoscelid
Zarcasaurustanyderus,lrom
NewMexico
north-central
Service/News
Staffnotes
p. 26
p.28
p. 34
p. 40
g.44
soon
Coming
Member-aformal
JackpileSandstone
definition
in the
Temperature
of mineralization
Mogollon
miningdistrict
vertebrates
of Gallegos
EarlyPaleocene
Canyon
the YatesPetroleumCorporation No. 1 Medano StateVA (Fig. 1, no. 8; Table 1, no' 8)
made a small oil discovery in Wolfcampian
(Permian)rocks. The Pogo Ptoducing Company No. 1 Mosbacher20 (Fig. 1.,no. 11;
Table1, no. 11)discoveredgasin Wolfcampian rocks.Major targetsof developmentdrilling in the Delaware Basin in 1983were gas
in"Pennsylvanianrocks, including the Morrow, Atoka, Strawn, and Cisco Series and
oil in sandstonesof the Delaware Mountain
Group (Permian), the Bone Spring Limestone (Permian),and the SanAndres, Grayb u r g , a n d Q u e e n F o r m a t i o n s( P e r m i a n ) '
Impioved artificial-fracturingtechniqueshave
minimized formation damage to clay-bearSoutheastNew Mexico
ing sandstonesof the Delaware Mountain
fairly
high
remained
Drilling activity has
Group and have resulted in higher Permein three of the four geologicsubdivisionsof
abilities and increasedproduction; because
Mexico:
New
in
southeast
the PermianBasin
this increasedproduction, drilling for oil
of
the DelawareBasin, the Central Basin platDelaware sand reservoirs has boomed
in
The
Roosethe
Northwest
shelf.
form, and
(Mickey,
1983c).
velt uplift saw little drilling activity in 1983.
Basin platform of east Lea
The-Central
signifiyielded
several
Basin
The Permian
a high level of drilling acsaw
also
County
cant oil and gas discoveriesin 1983(Fig. 1;
one significantwildcat
but
only
1983,
ih
tivity
presented
(1967,
pp.25-27)
Kinney
1).
Table
this densely drilled
in
made
was
discovery
stratigraphiccharts of oil- and gas-producing
area.That discoverywell was the CabanaOil
rock units in southeastNew Mexico.
CorporationNo. I Carter Estate(Fig. 1, no.
10; Table 1, no. 10), which found oil in the
in
an
is
used
formation
term
1983;
the
Yeso
Formation (Permian). Development
MsxIco
rN
ru
Nrw
DtscovERrEs
wrLDcAr
TABLE 1-SrcNrFrcANr
informal sense. NR, not released; BOPD, barrels of oil per day; BWPD, barrels of water per day; drilling of shallow oil reservoirs in the San
Andrei, Grayburg, and Queen Formations
MCFGPD, thousand ft' of gas Per daY.
(Permian) and the Tubb, Drinkard, and
Gravity
Producing
Total
Formation
Completion
Operator,
Location
Nunber
zones of the Yeso Formation (Per(degrees
Blinebry
Initial
intenal
Pioducing
(section-townshipdepth
at
well number,
dafe
on
(f0
potential
APD
(mo/yr)
(f0
formatioi
total depth
and lease
range, county)
FiB. 1
mian) predominates on the Central Basin
platform. Severalfields produce oil with the
1 t1l21,600 xCrcPD
Atoka
LO/A3
8,510
MonLrya
2I-8S-29E,
I
(Pennsylvanian)
7,726
(crdovician)
iid of waterflood operations. Martin and
I,IIO MCITPD
Taber(1982)receivedencouragingresultsin
9,\JA
26 85-298/
port, a significantwildcat discoveryis defined
as a well in which commercialamounts of
oil or gashave been discoveredat a distance
of more than five miles from the limits of
previously discoveredfields with commercial production from that formation. A significint wildcat dry hole is defined as a well
drilled in an unproductive basin or part of a
basin in which wells were drilled through
potential petroleum reservoirs.Table 3 lists
wildcats that were being drilled, were not
completed,or were held "tight" at the end
of 1983and which were located in unproductive basinsor parts of basins.
OFraErng
SLevens
No.
I
Red
hoco
CorP
R1d9e
ProducLlon
1
No.
27-15S-30E,
chavas
Lake
The DelawareBasinof Eddy and west Lea
Countiesvielded severalsignificantwildcat
discoveriesin 1983. Oil wis discoveredin
fwo wells in the Strawn Series. The Hilliard
Oil and Gas No. L McClellan FederalCommission (Fig. 1, no. 3; Table1, no. 3) had an
initial potential of 225 bbls of oil per day
(BOPD) from the Strawn through perforations from 70,628through 10,636ft. The Tenneco Oil Company No. 1 StateCommission
28 LF (Fig. 1, no. 9; Table 1, no. 9) had an
initial potential of 37 BOPD and 2 bbls of
water per day (BWPD) from the Strawn
through perforations from L2,334to 12,350
ft. Neir the northern margin of the Delaware
Basin, the Forister & Sweatt No' 2 Hewitt
Federal(Fig. 1, no. 5; Table 1, no. 5) found
gasin the SanAndres Formation (Permian),
ind the YatesPetroleum Corporation No. 1
BluffsideFederalWF (Fig. I, no. 6; Table 1,
no. 6) found gas in the ChesterSeries(Mississippian).Farther west, the Amoco Production Company No. 1 Rio Siete(Fig. 1, no.
7; Table 1,, no. 7), a workover of a Morrow
gas well, yielded oil from rocks correlated
irith ttre Glorieta Sandstone(Permian).Farther south toward the center of the Basin,
Co.
o'Brien
Fanch
i,424
lnc.
Hillrard oi1 & Gs
No. I scclellan
Federal Com.
3/Aa
20 Ias-29E,
Eddy
Mississippian
stfam
(Pennsylvanian )
Precambrian
Stram
(Pennsylvanra.
4!423
)
YaL€s
(Pormian)
4/81
EorisEer & sweaLt
No. 2 He\itL Federal
10,626
10,636
New AAexnc@
224 @PD
GEOLOGV
340 MCrcPD
4,43A
1,040|,I42
. Soionce
andService
157 MCrcPD
Volume
9-r9S
21E,
Yates
No.
7
1t-20S 25r
I
hco
No-
16-215 3rE,
2A-165
l4E,
Corp.
Bluffside
tsederal
Prduction
co.
((ro)
Rio
I
YaLes
-sieEe
PeLroIeum
L Medano
No.
Lea
Petrolem
Tenneco
No.
I
Orl
2/43
com.
chesLer
(hississiPPian)
9,465
brnett
(Hrssissippian)
Glorieta
(Permian)
Morrd
(Pennsylvanian)
wolfcaFp
11,966
(Permian)
11,990
(PennsYrvanian)
1? -)412,350
VA
SLaLe
. ,.00
Co.
state
Mississippian
L5,OO0
CorP.
10,170r0,194
10,250
wF
YrssLssipp.dn
2a
2,94A
2,91A
490 MCSPD
32-175-398,
Lea
L1
20,tm
2a-265 31E,
No. I uosb.her
4 9N-23E,
lrans-Pecos
No.
13
Ycso
(Permian)
cabna 0i1 corp.
No. I CarLer EstaLe
6-9N-248,
cuadaluF
Trans-Pecos
2
{silurian)
Ponnsylvanian
Resources
LaLigo
Ranch
4/43
27 24r1-I2R,
san Juan
Dugan Prduction
co.
No, 2 Snuffle UFgus
5-10N 2?E
Yates
Petroleu
1 f-4
Catcle
1 'l5a
cranite
(Precambrran)
(creLaceous)
corp
Co.
Yeso
(Permian)
4-229-22E,
22
holfcamp
(Pernian)
Ranch
36-5N-l0E/
No.
Sylvan
Rasources
1 Latigo
No.
20
May 1984 New Mexico Geology
6,4106,416
13/38213t421
New Mexico Bureau of Mines and Mineral Resoulces
a division of NewMexico lnstitute of Mining & Technology
16 &PD +
15 BI{PD
3mpD+
42
3? mPD +
2 B@D
43.1
LF
125 @PD +
5 B@D
2,145 MCrePD
6t7466,819
16,5 MCrePD
6t1426,88:
16 McrcPD
2,4702,49I
519 MCrcPD
3,8261,849
]O BOPD +
30 HCNPD
?,0057,\2O
4 8 B O P D+
L100 MCrePD
2,\452'150
9 FPD +
I B@D
6, No. 2, MaY 1984
quarterlY
bY
Published
BOARD OF REGENTS
Ex Officio
Anaya,
Goornor ol Nru Mexico
Toney
al PublicInstruction
Leonard Delayo, SuPqintendent
APPointed
Judy Floyd, Prc;.; 1977-7987,bs Cruces
William G. Abbott, Secty/Treas.,79611985,Hobbs
Donald W. Morris, 1983-1989,Ips Alamos
Robert Lee Sanchez,1983-1989,Albuquerque
Steve Tores, 1967-7985, SNofto
New Mexico Institute of MininS & Technology
Laurence H. Lattman
Presidmt. .
New Mexico Bureau of Mines & Mineral Resoulces
FrankE.Kottlowski
.......
D i e c t o r. .
......
Georges Austin
DeputyDirector
Subscriptions:Issued quarterly, February, Ma, August,
Novenber; subscription price $6.00/yr.
Editoritl mattq: Contributions of possible material for
considerationin future issues of NMG are welcome.
Artides submitted for publication should be in Oteeditor's
hands a minimum of five (5) months before date of
publication (February, Ma, AuSust, or November)
Address inquiries to Deborah A. Shaw, editor of Nru
New Mexico Bureauof Mines & Mineral
MeticoGeology,
Resoutces,Socono, NM 87801
Publishedas public domain, thercforcreProduciblewithout
pemissbn. Soarcecledil requested.
l,4N
Circulation:
Prinfer: University of New Mexico Printint Plant
TABLE 2-SlcNrFrcANTwrLDcArDRyHoLESrN New Mrxco nrr 1983; the term formation is used in an
informal sense.D&A, dry and abandoned.
Number
on
Fig. I
t1
Operatoi,
wellnumber,
and lease
Location
(section-townshiprange, county)
Completion
oate
(mo/yr)
Total
depth
(f0
Formation
at
tolal depth
Status
Comments
Orl
l5-l1N-25E,
c.oup
t9
oi1
t4-t1N-33E,
Triton
22-15N-14E,
John
Santa
No.
I
cKz
iJo.
?
tlest
Fe
l5s
2l{,
22
t5-23S-11N,
2)
a-24S-1@,
overthnst
aorp.
sevrlle-T.ident
6-245-AW I
seville-Trrdent
No.
I
hrshall
No.
cities
I
1,546
Granrte
DEA
Bt24A
cranrLe
D&A
LEd.
Rcsources
seville-Trident
CorP
No. 2 Cicy of Deming
2t-5N-tu,
tL
Elcphanl
6-245-ah,
11-26S-11il,
aa6-734
Cranardi
3-l3S-4h
2l
fran
Sa.La Ros
Flared gas frtr
f rom
rhrough Frforations
4ra-420 tt
1,000
& Gas CorP.
sh@
rn
(Permian)
CiLY
CorP.
of
servlce
8/83
Cranite wash
4,224
&nrnq
Young
Bisbee
10,560
o11
co.
Hills
co.
5,34
691wells were completedin northwest New
Mexico, and 784 wells were completed in
northwest New Mexico in 1982; almost all
wells drilled in northwest New Mexico are
drilled in the San Juan Basin, which is the
only productive basin in the northwest Part
of the state. The decline in the number of
wells drilled in 1983 was caused by a decreasedmarket for gas,which is the primary
petroleumproduct of the SanJuanBasin.By
mid-1983,however, the percentageof wells
drilled for oil in the SanJuanBasinwas greater
than in previous years; this increasedpercentage of wells drilled {or oil resulted in a
stabilizationof drilling activity (Mickey,1983a,
p. 28). Most of the oil wells were development wells completed in the Gallup Sands t o n e ( C r e t a c e o u s )I.n m a n y w e l l s , o i l
producedfrom the Gallup is commingledwith
oil produced from the Dakota Sandstone,
Greenhorn Limestone, and GranerosShale
(Cretaceous).
Many recently completedGallup wells are located in Rio Arriba County
and northeast San Juan County and are
northeast of the main northwest trend of
Gallup production. The main Gallup trend
produces
'shaped oil from northwest-trending barsandstones.Many wells northJastof
the main trend produce from sandstones
that are less permeable and porous than
sandstonesin ihe main Gallup trend (Reese,
1977).
Developmentof fields in the main Gallup
trend has also been rapid. It appearsthat at
leastone more oil-producing bar-shapedsand
has been discoveredin the Gallup in 1983
(Mickey, 1983b).A significant oil discovery
in the Gallup was made by the Dugan ProNorthwest New Mexico
duction CompanyNo. 2 SnuffleUpagus(Fig.
1, no. 15;Table1, no. 15).The SnuffleUpagus
In 1983, the number of wells completed in
the San Juan Basin of northwest New Mexico well was drilled in south-central San Juan
decreased from the previous year. In 1983, County, southwest of the main trend of pro-
their study of the use of chemical surfactants
to increase water injectivity in the Hobbs
Grayburg-San Andres field.
The Northwest shelf of the Permian Basin
is the third area of southeast New Mexico
that was actively drilled in 1983. Three significant wildcat discoveries were made on
the Northwest shelf. The Yates Petroleum
Corporation No. 1 Little Cuevo Unit (Fig. 1,
no. 4; Table 1, no. 4) struck gas in the Strawn
Series along the west margin of the Northwest shelf. The Yates discoverv pushes westward nroduction in the Perniian Basin and
could open the east flank of the Pedernal
uplift to more exploration. The Amoco Production Company No. L O'Brien Ranch (Fig.
l, no.2; Table 1, no. 2) found gas in Mississippian rocks. The Stevens Operating Corporation No. 1 Red Lake Ridge (Fig. 1, no.
1., Table 1, no. 1) struck gas in the Atoka
Series. Development drilling was mostly for
gas in the Abo "tight" gas sands (Permian)
in the first half of 1983. Development drilling
for oil in the San Andres Formation (Permian) predominated in the second half of
1983.Broadhead (1983a,1984a)and Scott and
others (1983) reported on the petroleum
geology of the "tight" Abo gas sands.
Few wells were drilled on the Roosevelt
uplift in 1983 and there were no significant
wildcat discoveries. Chief drilling targets on
the Roosevelt uplift are Pennsylvanian, Mississippian and Silurian rocks. Pitt (7973) reported on the hydrocarbon potential of prePennsylvanian rocks in Roosevelt County.
ducing Gallup sandstones.Main drilling targets for San Juan Basin natural gas were the
sameas in previous Years:the Dakota Sandstone in thi Basin D'akotafield and the Picrured Cliffs Sandstone in the Ballard and
Blanco fields. Stone and others (1983) discussedthe stratigraphyof Cretaceousrocks
in the San Juan Basin.
The Gulf Oil No. L Gallo Canyon FederalStateDeep Unit (Fig. 7, no.34; Table3, no.
34)is an importantwildcat that was drilling
in the San Juan Basin at the end of the year.
The Gallo Canyon well is scheduled to be
drilled to 12,500ft and should penetratethe
Paleozoicsection. Only approximately 20
wildcat wells have tested the Paleozoicsection in the New Mexico portion of the San
JuanBasin.Productionfrom Paleozoicrocks
is confinedto small fields in the west part of
the Basin.Therefore,the Paleozoicshould be
regardedas untested frontier territory that
underlies the well-developed Cretaceous
section.The stratigraphyof upper Paleozoic
rocks in the San Juan Basin has been summarized by Armstrong and Mamet (7977),
Ientgen (1977), and Baars and Stevenson
-0,9fi).
Rice (1983)and Reiter and Clarkson
(1983)investigatedthe thermal maturity of
petroleum sourcerocks in the San juan Basln. t<. F. M. Thompson (1983)studied the
origin of natural gas in the San Juan Basin.
In the Acoma Basin of northwest New
Mexico, the Cities ServiceCompany No. 1
SantaFe A (Fig. 1, no. 27; Table 2, no. 27)
was abandonedafter penetratingthe upper
Paleozoicsectionand reachinga total depth
of 5,3M ft in Precambrianrocks. Wengerd
(1959),Foster(1964),and Broadhead(1983b)
discussedthe petroleum potential of areas
adjacentto the Cities Servicewell.
In the Hagan Basin of Santa Fe County,
the John GianardiNo. 1 CKZ (Fig. 1, no. 19;
Table2, no. 19) was abandonedafter reaching a total depthofT ,773ft; the Gianardi weII
penetratederetaceous,Triassic,and Permian rocks.Also in the Hagan Basin,Pelto
Oil Company is attempting to complete its
No. 1 Ortiz well (Fig. 7, no.32; Table3, no.
32). which was abandoned in 1981after it
recovered15 bbls of high gravlty (40'API)
crude oil from Cretaceousrocks.Black(1979)
discussedpetroleum exPlorationin the Hagan Basin.
In the EstanciaBasinof southernSantaFe
Countv, the EasternSandiaProduction No.
2 Hortbn fig. 1, no. 33;Table3, no. 33) was
spuddedin 1983.It was scheduledto be drilled
t6 3,500ft to test the Pennsylvaniansection.
Only one shallow well was drilled in the
AlbuquerqueBasin in 1983.The C. R. Robinson No. 1 Baca(Fig. 1, no. 35;Table3, no.
35) was drilled to a total depth of 1',943ft on
the Hubbell bench in the southeast part of
the Basin.It penetratedand testedPennsylvanian rocks. Completion data were not
availableat the time this report was written.
No wells were drilled in the central deep part
of the AlbuquerqueBasinin 1983.Wellsdrilled
in previous years encountered promising
shows of gas and oil (Black, 1982).Kelley
(1977)andBlack (1982)discussedthe geology
13
of the AlbuquerqueBasin.
New Mexico Geology May 19M
TABLE 3-SIcIJIFICANTwILDCAT
wELLsrHAT wEREDRTLLED,
Nor coMpLErED,
oR "rrcHr,, er eNo or 19g3rN
Nsw Mrxrco.
Number
on
Fig.7
Location
(section-townshilF
nnge, county)
Operator,
well number,
and lease
Commenls
l3-29N-21E,
Co l fax
Chalfont Oil & cas
No. lY Kaiser Steel
3-13N-15E,
San Migue-l
Midas Minerals
No. I Solano
-12-tlN-278,
Quay
Yates Petro]eM
Corp.
No. 2 T-4 cattle Co.
Dri-l]ed
rocks.
to 7t4O0 ft
to
test
pennsylvdnian
26-1 O\r-238/
Guadafupe
Trans-Pecos
Resources
No. I Latigo Ranch
Bfock D
Drilled
to 7,9AO ft
ta
test
pennsylvan_ian
26-14i-BE,
Santa Fe
Pelto Oif Co.
No. I Ortiz
'?
Drrlled
to total
depth of
r45O ft in Dakota
Sfndstone (Cretaceous).
Swabbed f5 bbls oil from
= 40 degrees.
Dakota.
API gravity
D&A in 1981,
jn late 1983.
Attempted to recoFplete
32-IlN-78,
Santa Fe
Eastern Sandia
No. 2 llorton
26-23N-6W/
Sandoval
Gulf Oil Co.
No. I Ga]-to Canyon
Federal-State
Deep Unit
Scheduled
rocks.
3-5N-4E/
va -lenc ia
C. R. Robtnson
No. f Baca
Dri-l-led to total
depth of 7,940 ft.
Hubbelf bench in A.lbuquerque Basin
Exxon Corp.
No. f Beard Ole
Federal
scheduled
Doila
Exxon Corp,
No. 1 Mason Draw Federa]
Schedu_led to dritt
Ana
1l-23S-4W,
Doia Ana
Corp.
Production
3,500 ft
Cretaceous test
in Raton Basin.
Drilled
to totaf depth of I,9OO ft.
Oil
jn Pennsylvanian
shw reported
rocks.
Production
casing set at 7,84'/ fL.
Drilled
to total depth of 1,400 ft.
rest f.lank of Estancia Basin.
to driLf
to dri.l.l
to 12,500
ft
to
rocks.
Located on
test
paleozoic
Dri]]ed
(Kelley,
on
1982).
to 5teAO ft.
to l3,5OO
ft.
Northeast New Mexico
of 7,235ft and was completed in PennsvlSeveralpetroleum explorationwells were vanianrocksfor an initialpotentialof 48BOPD
drilled in northeastNew Mexico in 1983.Most and 1,100 MCFGPD. Tire Yates Petroleum
of the wells were drilled as a result of the Corporation No. 2 T-4 Cattle Company (Fig.
L982Pennsylvaniangas and gas condensate 1, no. 30;Table3, no. 30)was held "tight" at
discovery made by Trans-PecosResources the end of 1983,but reacheda total depth of
No. 1 Latigo Ranch Block A, located in the approximately7,400ft and presumablytested
T u c u m c a r iB a s i n o f G u a d a l u p e C o u n t y . the Pennsylvanian section. To the southeast,
Northeast New Mexico has nevbr produced in southwest Quay County, the DesanaCorpetroleum exceptfor the brief period when poration No. 1 Wichita (Fig. 1, no. 14;Table
gas was produced from the Morrison For- 1, no. 14)made a small gas discoveryin the
mation (Jurassic)and the Dakota Sandstone SanAndres Formation (Permian) after it was
(Cretaceous)at the presently abandoned drilled to a total depth of 7,150ft in PrecamWagonMound field in Mora County (Brooks brian rocks. Pitt aid Scott (1981)discussed
and Clark, 1978).
porosiW zonation in the San Andres ForTrans-PecosResourcesdrilled severalwells mation-of east-centralNew Mexico. To the
to confirm their 1982gasdiscovery.The Trans- north in San Miguel County, the Midas MinPecosResourcesNo. 1 Latigo RanchBlock C eralsCorporation No. 1 Solano (Fig. 1, no.
(Fig.1, no. 12;Table1, no. 12)and the Trans- 29; Table 3, no. 29) reached a total depth of
PecosResourcesNo. 2Latigo Ranch Block B 1.,900ft and reported an oil show in Penn(Fig. 1, no. 13; Table 1, no. 13) both found sylvanianrocki; production casing was set
small amountsof gasin Pennsylvanian gran- to 1,847ft.
ite wash. The Trans-PecosResourcesNo. 1
Heavy oil accumulationsin the SantaRosa
Latigo Ranch Block D (Fig. 1, no. 31; Table Sandstone(Triassic)continued to be the ob3, no. 31) was drilled to a total depth of ject of exploratoryand developmentactivity
about 7,900 ft and was held "tight" bt the in 1983.The Triton Oil and Gas Corporation
end of 1983.A few miles to the eait, in west- No. 1 Purcell(Fig.1, no. 18;Table2, no, 18)
ernmost Quay County, YatesPetroleum Cor- reportedly flared gas from the Santa Rosa
p o r a t i o n d r i l l e d t w o w e l l s t h a t t e s t e d Sandstonethrough perforationsfrom 410 to
Pennsylvanian rocks. The Yates Petroleum 420 ft before being abandoned.In northeast
CorporationNo. 1 I-4 CattleCompany (Fig. Guadalupe County, Rio Petro Limited con1,, no. 16; Table 1, no. 16), in an extiemelv tinued its efforts to recover heavv oil from
important discovery, reacheda total deptir the SantaRosaSandstonenorth oi the town
May 7984 Nm Mexico Geology
of Newkirk (Fig. 1, letter A). Rio Petro is
operating two pilot steamflood tests, the
O'Connell Ranch pilot and the T-4 Ranch
pilot, in an attempi to recoverthe oil. Steam
injectionwas begun in the O'Connell Ranch
pilot in 1981and in the T-4 Ranch pilot in
1982.Repeatedmechanicalfailure of the steam
generatorsappears to be the major reason
why neither pilot project has yet produced
oil in economicquantities;those mechanical
problems have recently been correctedand
the responseto steam injection appears to
be improving. Martin (1983) recently reported on the O'Connell Ranchpilot. In late
1983,Solv-ExCorporationabandonedits attempt to mine and extract heavy oil from
outcrops of the Santa Rosa tar sands in central Guadalupe County (Fig. 1, letter B). It
was decidedthat it was not economicallvfeasible to extract oil from the tar sands ai that
time. Encroachmentof water from SantaRosa
Lake onto outcropsof the tar sandshas also
hindered development. Budding (1979,1980)
and Gorman and Robeck(L946)reported on
the geologyof the SantaRosatar sands.The
subsurfaceareal extent of the oil-impregnated sandstonehas not been wetl defined.
Sanchez(1983)discussedthe possibleuses
of micro-organismsto increaseihe extraction
efficienryof oil from the SantaRosatar sands.
Broadhead(1984b)studied the regional subsurfacestratigraphyand petroleum geology
of the SantaRosaSandstonein northeastNe*
Mexico.
The Rio Petro No. 16 State (Fig. 1, no. 1.7;
Table 2, no. 17), drilled in the T-4 Ranch
pilot, was a wildcat GlorietaSandstone(Permian) test that was drilled to a total depth
of.1,186ft. The Glorieta was wet in the well
but an oil-stainedcore of the Artesia Group
(Permian)was recovered (GeorgeL. Scotl,
fr., personal communication 1983).An igneousdike cut out part of the G.lorietafrom
approximately1,,090to 1,160ft.
The not-yet-productive Raton Basin of
northeastNew Mexico has been the obiect
of continuedsearchfor petroleum.The Chalfont Oil & Gas No. 1Y KaiserSteel(Fig. 1,
no. 28;Table3, no. 28) was scheduledto be
drilled to 3,500ft to test Cretaceousrocks.
Severalwells drilled in previous years have
encounteredpromising shows of gas in Cretaceousrocks in the Raton Basin (Speer,1976;
Broadhead, 1982), but commercial production has not been established. Woodward
(1983)discussedthe occurrenceof potential
fractured reservoirs in the Raton Basin. Paleozoicrocks remain virtually untested in the
Basin.
Amoco Production Company initiated a
secondphase of development drilling in the
Bravodome carbondioxide gasunit of Union,
Harding, and Quay Counties, and 34 wells
were drilled in 1983.The Bravodome carbon
dioxide field has been unitized under Amoco'soperation. Carbondiotde from the Bravo
dome will be used for enhanced oil recovery
in the Permian Basin of west Texas (Wash,
i983) and New Mexico.Most carbondioxide
produced at the Bravo dome will be transported to the Permian Basin by the Amocobperated Bravo dome pipelin'e, which has
not yet been constructed.The ARCO-operatedSheepMountain pipeline will transport
carbon dioxide from Bravo dome and from
SheepMountain in southernColoradoto the
Permian Basin.
featuresarehigh-anglereversefaultsthat form
basement-coreaUt6ct uplifts (Brown and
Clemons,1983;Seager,1983).The well-documented shelf-edgereefs of the pedregosa
Basinof southernHidalgo County (Thoimpson and Jacka,1981)may contain excellent
petroleumreservoirsthat have not been discovereo.
flood techniquesby 1990, Such additional
production would replace waning production from older fields, but would not reflect
an increasein the reserves.One way to significantly increaseoil reservesin New Meiico is by the discovery of new fields in frontier
areassuch as the Pedregosaand Tucumcari
Basinsor in the Paleozoicsystem in the San
JuanBasin.
The declinein gas production in 1983has
beencausedprimarily by a decreasein sales
of New Mexico gas to California, the chief
consumerof gas produced in New Mexico.
CaliforniaconsumedlessNew Mexico qasin
1983than in previous years becauseoFconservation,some consumersswitching to alternateenergyresourcesand importation of
cheapergas from other sources.An exceptionally cold winter is partially responsible
for stopping the declinein gasproduction in
the last four months of 1983.The future of
gas production in New Mexico is uncertain
becauseof the uncertain future demand for
gas and the uncertain future price of gas.
AcrNownpcMENTs-Prentiss Childs bf the
New Mexico Oil ConservationDivision pro^Joe
vided the well-completion statistics.
Rameyof the New Mexico Oil Conservation
Division provided data on the volume of oil
and gas produced. David A. Donaldson of
the New MexicoBureauof Geologyprovided
the reservestatistics.Robert A. Iiieberman.
Frank E. Kottlowski, and Sam Thompson,
III, reviewedthe manuscript.
SouthwestNew Mexico
Severalpetroleum explorationwells were
drilled in southwestNew Mexicoin 19g3,but
Effect of discoverieson oil and gas
none produced discoveries.In the palomas
production
Basin of SierraCounty, the Getty Oil Company No. 2 WestElephantButte F'ederal1Fig.
New Mexico's oil and gas production and
7, no. 20; Table 2, no. 20) was abandone"d reserveshavebeen decliningln recentyears,
afterreachinga total depth of 7,556ft in pre- but the state continues to be a majoi procambriangranite.In the Jornadadel Muerto ducer of both crude oil and natural eas. In
of Sierra County, the Overthrust Resources 1981,New Mexico was the seventhIargest
No. 1 Federal23 (Fig. 7, no.2l; Table2, no. producer of crude oil and the fourth hr[est
21)was abandonedaiter reachinga totaldepth producerof naturalgas in the United Stites
of 2,630ft in Cretaceousrocksl
(New Mexico Energy and Minerals DepartFive wells were completed in Luna Countv ment, 1982,p. 13).Productionof crude oil
in 1983.All five wells were abandoned.and and natural-gasliquids in New Mexico in
none had reports of oil or gas shows. The 1982was 71.0millionbbls,a decrease
of I.6Vo
first well completed,the Seville-TridentCor- from the 72.2 million bbls produced in 1981.
poration No. 1 State(Fig. 1, no.22; Table2, Data obtained from the New Mexico Oil Conno. 22) was abandonedafter it was drilled servationDivision indicate that oil producto a total depth of 8,240 ft in Precambrian tion increasedby approximately4.59oin 1983.
gra,nite.The Seville-Trident Corporation No. Gas productionin'New Mexiio in 1982was
1 Hurt Ranch(Fig. 1, no.23;TabIe2, no. 23) 990 billion ft., down lI.5% from the 1,119
was abandonedafter it was drilled to a total billion ftr produced in 1981.Data obtained
depth of 7,723 ft in reported granite wash. from the New Mexico Oil ConservationDiInt982, the Seville-Trident Coiporation No. vision indicate that gas production declined
1 City of Deming(Fig.1, no. 25;Table2, no. approximately137oin 1983;the annual de25)was drilled to a total depth of 4,225ft in cline in gas production occurredduring the
rocksthat are probablyTertiary valley fill or first eight months of 1983.Gas produition
volcanics,and'it was-pluggedin tgdt. the
was fairly stablein the last four-monthsof
Seville-TridentCorpoiati6i No. Z City of 1983.In 1982,the PermianBasinof southeast
References
Deming(Fig. 1, no.-24;Table2,no. 24)-was New Mexico produced 9l% of the state'soil
Armstrong, A. K., and Mamet, B. L.,1977, Biostratisraabandonedafter it was drilled to a total depth and 53%of the state'sgas;the San
JuanBasin
phy and paleogeography of the Mississippian sysiem
of 10,560ft in Precambriangranite. The fifth of northwest New MExicoproduced9% of
in northern New Mexico and adjacentSan Juan Mounwell completedin Luna County in 1983is the the state'soil and 47Voof the state'sgas.As
tains of southwestern Colorado: New Merico Ceoloer-.:]
Guidebook to 28th field conference, pf.
9g:luty,
!t!91shgllYoung Oil Company No. 1 Bisbee of December37, 1982,New Mexico had oil
71.7-727.
Hills (Fig. l, no.26; Table2, ho. 26), which reserves of 947 million bbls, an increase of
D. L., and Stevenson, G. M., 1977, permjan rocks
was abandonedin probable precambrian 2% fuom the fanuary 1981 reservesof 929 Baars,
of the San Juan Basin: New Mexico Geological Society,
basementat a total depth of 7,164 ft.
Guidebook to 28th field conference, pp. I::-t:A.
million bbls; those reservesinclude oil that
Two wells were spuddedby Exxonin Dona c a n b e r e c o v e r e db y e n h a n c e d - r e c o v e r y Black, B. A.,7979, Oil and gas exploration in the Santa
Fe-GalisteeHagan
area: I,Iew lt4exico Geolosical SoAna County late in 19ffi. fhe Exxon Cor- techniques.As of December31, 1982,New
ciety, Guidebook to30th field conference, pp.lfS_ZZO.
porationN6. 1 BeardOle Federal(Fig.l, no. Mexico had gas reservesof 16.5trillion ft,,
1982, Oil and gas exploration in the Albuquerque
a -,
36;Table3, no. 36)was scheduledto b; drilled decreaseof 8% from the December21,,1.981,
!1s1n, \9w Mexico Geological Society, Guidebook'to
to 5,800ft, and the Exxon Corporation No. reservesof 77.9trillion ff .
33rd field conference, pp. ZIZ-ZZ+.
Broadhead, R. F., 1982, Oil and gas discovery wells drilled
1 Mason Draw Federal(Fig. l,-no. 37; Table
The
increase
in
oil
production
in
1983
may
in New Merico in lcSl: Newfuerico Geo'logy, v. 4, no.
3, no.37)was scheduledto be drilled to 13,500 .be attributed to two factors.First, new oil
2, pp. 1.7-1,9,32,
ft.
reserveswere discoveredand existingfields - ,
1 9 8 3 a ," T i g h t " A b o g a s s a n d s , e a s t - c e n t r a lN e w
Although there was no petroleum pro- weredevelopedin the recordnumberdf wells
Mexico (abs.): American Association of petroleum Geologists,Bulletin, v.67, p.430.
duction in southwestNew Mexico in t'gS:1. drilled in 1980, 1981, and 7982 so that the
-,
1983b, Petroleum eiploration in Socorro County:
there is potential for future production amount of oil availableto be produced
New Mexico Geological Society, Guidebook to 34th fieid
was
(Foster and Grant, 1974; Greenwood and increased.Second,the markei for
conference, pp. 219-222.
produced
-,
others, 7977;Thompson, 1980;Thompson. oil was good so that any oil produied
7984a, Stratigraphically conholled gas production
could
from Abo red beds (Pemian), east-central Niw Mexico:
1981;Thompson and lacka, 19BI). Several be sold. Oil production in iSSAshould
reNew Mexico Bureau of Mines and Mineral Resources,
w e l l s d r i l l e d i n p a s t y e a r s e n c o u n t e r e d main stableor increaseslightly becauseof a
C i r c u l a r 1 8 3 ,3 6 p p .
p r o m i s i n g r h - l * l o f b o t h o i l a n d g a s steadily rising demand foi oii (Oil and
-,
Gas
-7984b, Subsur{ace petroleum geology of Santa
(Thompsonand Bieberman,1975;ThompSon Journal, 1983,p. 58) and continued
Rosa Sandstone (Triassic),-northeast New Mexico: New
stability
Metco Bureau of Mines and Mineral Resources, Cira n d o t h e r s , 1 , 9 7 8T
; h o m p s o n , 1 9 g 2 i , b ; of oil pricesat around g29lbbl.Continued oil
cular 193, in press.
Broadhead,1983b).Many wells drilled in re- discoveriesin the DelawareMountain
Group, Brooks, B. J., ind Clark, W. R., 1928, Waqon Mound
cent years in southwest New Mexico were the Bone Spring Limestone,and
D a k o t a - M o r r i s o n ( g a s ) ; l f l F a s s e t t .J . E . ( e d . ) , O i t a n d
the Galhip
locatedon the assumptionthat southwest Sandstonewill-encouragedrilling
gas fields of the Four Corners area, volume l: Four
and deNerruMexicois part of the Laramide-ageCor- velopmentand should help prevent produc- - Corners Ceological Society, pp. 55J-555.
B
r
own. G. A., and Clemond, ti.'e., tsS:, Florida Moun_
dilleran.overthiust
belt, as proposed5y Cor- tion declines. Production declines^will be
tains section of southwest New Mexico overthnrst belt_
bitt and Woodward (19rc), D."*e, i1928, slowed in the more distant future bv
a reevaluation: New Mexico Geology, v. 5, no. 2, pp.
imole1982),and Woodwardand DuCheneil9g1). mentation of carbon dioxide
26)9.
flooding of'ex- Budding,
A. J., 1979, Geology and oil characteristics of
More recentstudieshaveindicatedthat thrust istingfields;Foster(1980,p. 3; estimaled
that
the Santa Rosa Lar sands,'Guadalupe County, New
faulting in southwestNew Mexico is of local an additional4.6 to 17 million bbls
of oil per
Mexico: New Mexico Energy Institute; Report Eil4D 7g_
extent only; major Laramide-agestructural day could be produced by carbon dioxide
JJro, rY pp.
conlinuedon page27
NewMexicoCeology May 1984
settlersin the 1790's,it is situatedon a high
bluff overlookingthe meanderingPecosRiver.
The community is part of the vast SanMiguel
del Bado grant that was chartered by the
SpanishCrown in7794.Established
at i time
when Indian attacks were routine, Villanuevais one of the last New Mexicanvillages
that still has part of the high wall that oice
surrounded it completely. These types of
outpostsor placitas(little plaza or little city)
were built with the housesfacing inward on
a central plaza, so that the soli"dback wall
formed a stout barricade.Long bypassedby
railroad and highway, Villanueva has retained much of its original Spanish-colonial
charm. The beautifully maintained mission
church in the village datesback to 1818.
work of Cordilleran foldbelt in southwestern New Mexico: American Association of Petroleum Geologists,
Bulletin, v 57,p 2,2072,276
Drewes, H , 1978, The Cordilleran orogenic belt between
Nevada and Chihuahua: Geological Society ofAmerica,
Bulletin, v 89, pp 647-657
_,
1982, Some general features of the El Paso_Wickenburg transect of the Cordilleran orogenic belt, Texas
toArizona; in Drewes, H (ed ), Cordilleran overthrust
belt, Texas to Arizona: Rocky Mountain Association of
Geologists, Guidebook to 1982 field conferenc e, pp 8795
Foster, R W,1964, Stratigraphy and petroleum possibilities of Catron Countv. New Mexico: New Mexico
Bureau of Mines and Mineral Resources. Bulletin 85,
55 pp
-,
1980, Carbon dioxide sources and use for enhanced oil recovery: New Mexico Petroleum Recovery
Research Center, Report 80-4,73 pp
Foster, R W, and Grant, P R., Jr., 1974, The future of
New Mexico's oil and eas resources; New Mexico Bureau of Mines and Miieral Resources. Resource Mao
3, scale l:1,287,000
Gorman, J M, and Robeck, R C , 1946, Geology and
asphalt deposits of north-central Guadalupe County,
New Mexico: U S Geological Survey, Oil and Gas Investigations, Preliminary Map 44 scale 1:53,350
Greenwood, E, Kottlowsk.i, F E, and Thompson, S, III,
1977, Petroleum potentidl and straLigraphy of Pedregosa Basin<omparison
with Permian and Orogrande
Basins: American Association of Petroleum Geologists,
Bulletin, v.61, pp 1,448-1,,465.
Jentgen, R. W , 7977, Pennsylvanian rocks in the San Juan
Basin, New Mexico and Colorado: New Mexico Geological Society, Guidebook to 28th field conference, pp
129-1.32
Kelley, V C , 1,977,Geology of Albuquerque Basin, New
Mexico: New Mexico Bureau of Mines and Mineral Resources, Memoir 33, 60 pp
-,
798L Diverse geology of the Hubbell bench, Albuquerque Basin, New Mexico: New Mexico Geological
Society, Guidebook to 33rd field conference, pp 159150
Kinney, E E (ed),7967, The oil and gas fields of southeastern New Mexico: Roswell Geological Society, 1,967
symposium supplement, 195 pp
Kottlowski, F E, and Stewart, W J, 1970, The Wolfcampian Joyita uplift in central New Mexico: New Mexico Bureau of Mines and Mineral Resources, Memoir
23,pt 7, pp 1-31
Above the river, on both sides, are vertical
cliffs,containingmany cavesthat show signs
of prehistoric Indian occupancy.Old stone
walls and crumbling adobe huts are reminders of the sheep-raisingdays of the past.
The name villanueva, meaning "new village,"datesbackto the establishment
of the
post officein Villanuevain 1890.Prior to that
time, the village was called Cuesta or La
Cuesta. In 1890, when the inhabitants of
Cuestapetitioned the United Statesgovernment to establisha post office,two largefamilies lived in the aiea: the Aragons ina tne
Villanuevas. The petition contained more
signaturesfrom the Villanueva family, hence
the name of the village.
-Roy
Foster
References
continuedfrom page25
-,
1980,Geology and oil characteristicsof tar sand
near Santa Rosa, New Mexico: New Mexico Geology,
v. 2, no. l, pp. 4-5.
Corbitt, L. L., and Woodward, L, A , 1973,Tectonicframe-
Martin, F D , 1983, Steamflood pilot in the O'Connell
Ranchfield: New Mexico EnergyResearchand Development Institute, Report NMERDI 2-69-3302,70 pp
Martin, F. D., and Taber,J. J , 1982,Improvement of water
injectivity in the Hobbs (Grayburg-ganAndres) fieJd:
New Mexico Energy Researchand Development Institute, Report2-69 3303,35pp.
Meyer, R F, 1956,Geology of Pennsylvanian and Wolfcampian rocks in southeastNew Mexico: New Mexico
Bureau of Mines and Mineral Resources.Memoir 17.
123 pp
Mickey, V, 1983a, Drilling stabilizes in the San Juan:
Western Oil Reporter, November 1983,pp 28-j5
-,
1983b,Interestin bar sands pavs off: Western Oil
Reporter,November 1983,p 37
-,
1983c,Methanol foam fracs open up Delaware:
Driff Bit. Ocrober1983,pp 17-t8
Molenaar,C. M, l,9TT,Stratigraphy
and depositionalhistory of Upper Cretaceousrocks of the San Juan Basin
area, with a note on economic resources:New Mexico
GeologicalSociety,Guidebook to 28th field conference,
oo 759-756
New Mexico Energy and Minerals Department, 7982,Annual ResourcesReport, 95 pp
Oil and GasJournal,1983,U.S energysuppliesseenadequate, low-priced: Oil and Gas Journal, v. 81, no 51,
pp 58-59
Pift; W D , 7973,Hydrocarbon potential of pre-Pennsylvanian rocks in Roosevelt Countv, New Mexico: New
Mexico Bureau of Mines and Mineral Resources,Circular 130,8 pp
Pitt, W D , and Scott,G L , 198L,Porosity zones of lower
part of San Andres Formation, east-centralNew Mexico: New Mexico Bureau of Mines and Mineral Resources,Circular179,20pp
Reese,V R., 1,977,Oil and gas potential of the Gallup
Formation-a fourth stratigraphic producing interval
of the inner San Juan Basin: New Mexico Geological
Society,Guidebook to 28th field conferencesupplement, pp 23-29
Reiter, M, and Clarkson, G , 1,983, Relationships between heat flow, paleotemperatures, coalification, and
petroleum mafuration in the San Juan Basin, northwest
New Mexico and southwest Colorado: Geothermics, v
12, no 4, pp 323-i39
Rice, D D , 1983, Relation of natural gas composition to
thermal maturity and source-rock type in San Juan Basin, northwestern New Mexico and southwestern Colorado: American Association of Petroleum Geologists,
Bulletin, v 67,pp 7,799-7,278
Roberts, J W, Barnes, J J, and Wacker, H l, 1976,
Subsurface Paleozoic stratigraphy of the northeastem
New Mexico basin and arch comolex: New Mexico Geological Sociery, Guidebook to 27ah field conference, pp.
141-752
Sanchez, G ,1983, A pilot study on the isolation, metabolism, and adaptation of micro-organisms to Santa Rosa
tar sand hydrocarbons: New Mexico Energy Research
and Development Institute, Report NMERDI 2-69-3410,
1s pP
Scott, G. L, Brannigan, J P, and Mitchell, S T, 1983,
Pecos Slope Abo field oI Chaves County, New Mexico;
in Guidebook for field trip to the Abo red beds (Permian), central and south-central New Mexico: Roswell
Geological Society and New Mexico Bureau of Mines
and Mineral Resources, p 73
Seager, W R, 1983, Laramide wrench faults, basementcored uplifts, and complementary basins in southern
New Mexico: New Mexico Geology, v 5, no. 4, pp 6975
Speer, W. R , 1,976, Oil and gas exploration in the Raton
Basin: New Mexico Geological Society, Guidebook to
27th field. conference, pp. 217)25
Stone, W J.,Lyford., F P, Frenzel, P F, Mizell, N H.,
and Padgett, E T.,1983, Hydrogeology and water resources of San Juan Basin, New Mexico: New Mexico
Bureau of Mines and Mineral Resources, Hydrologic
Report 6, 70 pp
Thompson, K F M, 1983, Origin of natural gas, San
Juan Basin, New Mexico (abs ): American Association
of Petroleum Geologists, Bulletin, v 57, p 557
Thompson, S, II, 1980, Pedregosa Basin's main exploration target is Pennsylvanian dolostone: Oil and Gas
Journal, v 78, no 42, pp 202,207,2'1.0,215
-,
1987, Petroleum source rocks in exploration wells
drilled to Paleozoic or Mesozoic unils, Hidalgo and Grant
Counties, New Mexico: New Mexico Energy Institute,
Report EMD 2-66-i306, 720 pp
-,
7982a, Oil and gas exploration wells in southwestern New Mexico; ln Drewes, H (ed ), Cordilleran
overthrust belt, Texas to Arizona: Rocky Mountain Association of Geologists, Guidebook to 1982 field conference, pp 137-153
-,
1982b, Oil and gas exploration wells in southwestern New Mexico: New Mexico Bureau of Mines
and Mineral Resources, Open-file Report 181, 18 pp
Thompson, S., III, and Bieberman, R A, 1975, Oil and
gas exploration wells in Dofla Ana County, New Mexico: New Mexico Geological Society, Guidebook to 26th
field conference, pp 171,-174
Thompson, S., ilI, and Jacka, A D , 1981,,Pennsylvanian
stratigraphy, petrography, and petroleum geology of
the Big Hatchet Peak section, Hidalgo County, New
Mexico: New Mexico Bureau of Mines and Mineral Resources, Circular 176,1.25 pp
T h o m p s o n , S , i l I , T o v a r R , J C , a n d C o n l e y ,J N , 1 , 9 7 8 ,
Oil and gas exploration wells in the Pedregosa Basin:
New Mexico Geological Society, Guidebook to 29th field
conference, pp 331,-342
Wash, R., 1983, CO2 to coax more crude from Basin: Drill
Bit, December 1983, pp 12-74
Wengerd, S. A ,7959, Regional geology as related to the
petroleum potential of the Lucero region, west-cenfral
New Mexico: New Mexico Geological Society, Guidebook to 10th field conference, pp 12'1,-134.
Woodward, L A , 1983, Raton Basin, New Mexico-possibilities for fracture reservoirs in Cretaceous rocks: Oil
and Gas Journal, v. 87, no 29, pp 775-178
Woodward, L A., Callender, J. F, Seager, W. R., Chapin,
C E., Gries, J C, Shaffea W L., and Zilinski, R E,
1978, Tectonic map of Rio Grande rift region in New
Mexico, Chihuahua, and Texas; inHawley, J W (compiler), Guidebook to Rio Grande rift in New Mexico
and Colorado: New Mexico Bureau of Mines and Mineral Resources, Circular 153, sheet 2
Woodward, L. A, and DuChene, H R, 1981, Overihrust
belt of southwestern New Mexicecomparison
with
Wyoming-Utah
overthrust belt: American Association
of Petroleum Geologists, v. 65, pp. 722-729.
U
Nmt Mexico Geology May 7984
27