TheNewMexicoLibraryol Subsurface Dataat NMBMMR byRonald F.Broadhead, NewMexico Bureau Resources of Mines andMineral Introduction The New MexicoLibrary of SubsurfaceData is located in the PetroleumRecordssection of the New Mexico Bureauof Mines and Min- versity, University of New Mexico, and other universitiesand colleges.It is also used by geologistsand engineersfrom state and federal agencies,the generalpublic, and the staff of the New Mexico Bureauof Mines and Mineral Resources. small oil companiesdo not have the financial resourcesto maintain large collectionsof cuttings and logs. As a result, many geologists rely on the library as a source of their data. Data collections The NMBMMR has placed emphasis on Purpose increasing the size and diversity of its colThe ultimate purpose of the New Mexico lectionsof completioncards,geophysicallogs, Library of SubsurfaceData is to benefit the and drill cuttings. The New Mexico Library Stateof New Mexicoand its citizens.It does of SubsurfaceData has completion cards for so by providing data on petroleum explo- more than 85,000wells, virtually every peration and developmentwells to geoscien- troleum exploration and development well oil or natural gas; and 8) fusulinid determi- tists and engineerswho are striving to better ever drilled in New Mexico (Fig. 1). Comunderstand the complex geology of New pletion cards contain information pertaining Mexico. That complex geology controls the to the well location, basic engineering data, location of pools of oil and gas and deposits stratigraphic data, drill-stem tests, producof carbondioxide, helium, coal,uranium, and tion tests, records of oil and gas shows, and sulfur. A better understanding of geology initial production potentials. Data for comIeads to the discovery and development of pletion cards have been obtained from comthose resources.When those resourcesare m e r c i a l v e n d o r s , t h e N e w M e x i c o O i l discoveredand developed,jobs are created Conservation Division, the petroleum inChenoweth contain subsurfacestratigraphic and incomesrise. In addition, taxesand rovdustry, and the United StatesGeologicalSurand structuralmaps of southeastNew Mex- altiesderived from the productionof mineral v e y . A t t e m p t s a r e m a d e c o n t i n u a l l y t o ico. Most data in the library pertain to New resources(especiallyoil and natural gas)fund supplement completion data for older wells. Mexico, but selecteddata from adiacentstates a large percentage of state programs, such New cards are added to the files on a weekly and bordering areas of Mexico are also on as education, and contribute annually to the basisas wells are drilled and completed.Refile. The data have been securedbv comoa- state'spermanent funds. cent donations of completion cardshave been nies and individualsat a cost of 6illionsof The New MexicoLibrary of SubsurfaceData received from Arapahoe Drilling Company dollars. is the solepublicrepositoryfor drill cuttings and geologistMyles A. Colligan. The New Metco Library of SubsurfaceData and other well data that cover the entire state -of Geophysicallogsfrom approximately37,000 is an important source information re- of New Mexico. It contains the only publicly wells are currently on file in the Library of garding the exploration for, and develop- accessiblecollection of drill cuttings in New SubsurfaceData. Generally, more than one ment of, petroleum, carbon dioxide, helium, Mexico, the only collectionthat can be used type of log exists for each well. Geophysical coal, uranium, and sulfur resourceswithin without charge, and the most complete col- logs, taken after a well has been drilled, proNew Mexico. It is also an important source lection, public or private, in the state. The vide important geologic data on rocks peneof data regarding basicresearchinto the sub- drill-cuttings collection becomes more imtrated by the well and on the fluids present surface geology of New Mexico. The library portant each year becausemany oil compa- within those rocks and are virtually indisis used by industry geologists and engi- nies, in an effort to save space and money, pensable when evaluating the oil and gas neers,and faculty and graduatesfudentsfrom no longer maintainlarge,private collections. potential of a well. The logs are used to reNew Mexico tein, NEw Mexico State UniIn addition, many independentoperatorsand FIGURE l-Completion cards containing data on more than g5,000 oil and gas wells drilled in New Mexico are stored in these files. The large filing cabinets in the background contain geophysical logs from approiimatel! 37,000 wells. FIGURE 2-Drill cuttings are small piecesof rock ground by the drill bit and are valuable, irreplaceablerecords of a well. New Mexico Ceology May 1989 construct and map the subsurfacegeology of an area;that reconstructionis important when developing petroleum prospectsand planning the locationsof new wells. Geophysical logs in the library have been acquired from the New Mexico Oil Conservation Division, the United States Geological Survey, the United StatesBureau of Land Management, and private industry. Approximately 43,500 boxes of drill cuttings from 12,900wells are currently on file. Drill cuttings are small piecesof rock ground by the drill bit as the well is drilled (Fig. 2). They generallyarecollectedat 10-ftintervals. Eachinterval is packagedseparately,and one box of cuttings contains packagesrepresenting from 500 to 1,000ft of the well (Fig. 3). These drill cuttings are virtually irreplaceable. They are indispensablewhen analyzing the subsurfacegeology of an area and provide data that complement geophysicallogs and completion cards. The library's collection constitutes the only preservedset of cuttings for many wells drilled in New Mexico. Cuttings are donated to the library by the petroleumindustry. lnl987, YatesPetroleum Corporation of Artesia, New Mexico donated their samplelibrary, consistingof 3,800boxes of cuttings, to the Bureau. Smaller additions and donations are made to the collection on a weekly basis. Descriptionsof drill cuttings and drill cores from approximately 4,300 wells are on file. Thesedescriptions, like geophysicallogs and drill cuttings, are valuablewhen reconstructing and mapping the subsurfacegeology of an area during exploration for oil, natural gas, and other mineral resources.Cutting and core descriptions have been made through the years by Bureau geologists. Other descriptions have been donated by oil companiesand independentpetroleumgeologists. Driller's logs from approximately t2,100 wells are on file. The logs are observations and analyses made by drillers, geologists, and engineers at the well site. They provide much valuable data pertaining to the rocks FIGURE 3-Approimately are currently on file. penetrated by the well and often record data on showings of oil and gas. The Library of SubsurfaceData maintains maps and files that illustrate and describe the boundaries of all oil and gas pools in the state. These maps and files are continually updated. The library maintains and continually updates petroleum exploration maps for most counties. These maps show the location of all oil and gas wells; section, township, and range lines; and larger towns and cities. Names and total depths are shown for most wells. Map scaleis 1 inch : 2 miles. Maps are availablefor all New Mexico counties except Chaves,Eddy, Lea, RioArriba, SanJuan, and Taos. Paper copies may be purchased at $3.00per county map. Destructive sampling Several types of analysesrequire destructive sampling of drill cuttings. The more common types are hydrocarbon source-rock studies, radioactive-agedating, and micropaleontologic-biostratigraphic studies. Generally, destructive sampling of drill cuttings is prohibited. Exceptionswill be made if the information derived from such sampling will provide data essential to petroleum exploration and if such data is not publicly availa b l e e l s e w h e r e .A w r i t t e n r e q u e s t t h a t documents the sampling program must be submitted in advance to the Bureau, and written permission must be obtained from the Bureau. Destructivesampling must not entirely deplete the cuttings from any depth interval of a well; a representativesample of the cuttings must be left after sampling; and the remaining sample must be of sufficient Lending policies volume to allow routine microscopic analyThe New MexicoLibrary of SubsurfaceData sis. Resultsof analysesthat require destrucdoesnot lend completioncards,geophysical tive samplingmust be fumished to the Bureau logs, sample descriptions,or other records where they will be placed in the public dopreservedon paper.All recordsand data may main. If the analyseswere performed at the be freely examined on the premises; limited expenseof private industry, the Bureau will volumes of paper recordsmay be photoco- agree to keep the results confidential for a pied at nominal cost.Telephonedor written maximum period of one year. All sampling requests for photocopies will be honored of cuttings must be performed at the Bureau provided information is given regarding spe- under the supervision of Bureau personnel. cific wells, locations,etc.The purposeof this no-lending policy is to ensure that the maxVisitors' facilities imum amount of material is available to all Tablesare provided for visitors to examine those who have a need for it. In a similar manner, a policy has been es- well data, maps,logs, etc. Drill cuttingsmay be examinedin the sample-examinationroom tablished that prohibits the lending of drill cuttings. In many casesin the past, lending equipped with stereoscopicmicroscopes, has resulted in nonreturn, spillage, unau- ultraviolet-light boxes, and accessoryequipthorized destructivesampling,or other loss. ment (Fig. 4). Data may be photocopiedat a A no-lending policy has been establishedbe- nominal cost that covers exPensesof reprocause most of these cuttings are valuable, duction. Facilitiesare availableto make conirreplaceablerecords of exploration and de- tinuous photocopies of geophysical logs. velopment activity. Exceptions to the policy However, visitors or telephone clients who will be made only rarely, and then on a case- request copies of large amounts of data or who require blueline copies of geophysical by-casebasis, provided a request is made in writing and the loan is in the best interest logs are urged to obtain that information from commercialvendors. of the state. 43,500boxes of drill cuttings from 12,900wells May 1989 Nm Mexico Geology FIGURE 4-The New Mexico Library of Subsurface Data has a sampleexamination room for visitors that is equipped with microscopesand other equipment necessaryfor analysis of drill cuttings. Fufure A plan has been initiated recently to make well-completion and production data available on computer; it will take from eight to ten years to complete digitization of the data. This form of cataloging on computer will allow users of the library to search more efficiently through well reiords to find the data they need, thereby saving time and effort that can be better devoted to other phases of their projects. (continueil frompage30) References Binglea E. C., 1968,Geology and mineral resourcesof Rio Aniba County, New Mexico: New Mexico Bureau of Mines and Mineral Resources,Bulletin 91, 158 pp. Bfatu,Vlr'N., Page,N. J., and fohnson, M. G., 7977,iiap and list of reported occunencesof platinum-group meials in the conteminous United States:U.S. Ceoiogical Survey, MiscellaneousField Studies Map MF-861, 2 sheets. Cavin, W. J , Connolly, R , Jr., Edwards, P. L., parchman, M., and Woodward, L. A., 1982,Precambrianshatieraphy of Manzanitaand north Mauano Mountaini, Ellis, R. W., 1930,New Mexico mineral deposits except fuels: Universi$r of New Mexico, Bulletin 167, geological series, v. 4, no.2, 748 pp. Elston, W. E., 1967,Summaiy of the mineral resources of Bemalillo,Sandoval,and SantaFe Counties,New Mexico: New Mexico Bureau of Mines and Mineral Resources,Bulletin 81, 81 pp. Eveleth,R. W., and Bieberman,R. A , 1984,Mineraland mineral-fuel production activities in New Mexico during 1982; iz Annual Report July t, 1982, to June 30, 1983,56th year: New Mexico Bureauof Mines and Mineral Resources,pp 2733 Fain, C O , 1910,TaosCounty, New Mexico:South-Weste r n M i n e s ,v . 2 , n o . 3 , p p . 3 - 4 . Finch, R. J., Ikramuddin,M., Mutschler,F E., and Shannon, S S., Jr , 1983,Preciousmel.alsin alkalinesuite porphyry copper systems in westem North America Complementary facilities at NMBMMR Two additional facilities at the NMBMMR complement the New Mexico Library of Subsurface Data. The GeotechnicalInformation Center is a repository for records, publications, maps, and other reports pertaining to mines, prospects, mineral industries, and geology of New Mexico. Many documents stored in the GeotechnicalInformation Center contain information valuable to those exploring for petroleum in the state.The center is managed by Elizabeth Reynolds, (505) 835-5145. The NMBMMR core library contains numerous drill coresfrom throughout the state. Although most corescome from holes drilled for mineral prospects, several are from petroleum explorationand developmentwells. The core library is managedby JamesRobertson/ (505)835-5125. (abs.):GeologicalSociefyof America, Abstractswith P r o g r a m sv, . 7 5 , p . 5 7 2 . Greenwood,N. N., and Earnshaw,A.,798/^,Chemistry of the elements:PergamonPress,Ltd., Orford, England, 1543pp. Griswold, G. B., 1959,Mineral depositsof Lincoln County, New Mexico:New Mexico Bureauof Mines and Mineril Resources,Bdletin 67, 117 pp. Haffty,Joseph,and Riley,L. fi.: 1971,Suggestedmethod tor spectrochemical analysisof geologicmaterialsby the tire assay preconcentration-intermittenl. d-c arc technique; in Methods for emission spectro-chemical analysis:American Societyfor Testingand Materials, 6th edition, pp. 1027-103i. Harley,G. T., I 934,Thegeologyand oredepositsof Siera County, New Mexico: Ne; Mexico Buieau of Mines _ New MexicanPrinting Co., SantaFe,349 pp. Jo19s, F A., 1908,Epitome of the economii geology of New Mexico:New Metco Bureauof Immigration,Santa F e ,4 7 p p . fones, F A , 1915,The mineral resourcesof New Mexico: New Mexico Bureau of Mines and Mineral Resources, Bulletin 1, 77 pp Lindgren, W., Graton, L C, and Gordon, C H., 1910, The ore deposits of New Mexico: U.S GeologicalSurvey, ProfessionalPaper 58, 361 pp. Mutschler, F. E., Griffin, M. 8., Stevens,D. S., and Shannon, S. S., 1r.,7985,Preciousmetal depositsrelatedto alkaline rocks in the North American Cordillera-an rnterpretive review: Transactions Geological Society SouthAfrica, v.88, pp. 355-377. Staff and hours The New MexicoLibrary of SubsurfaceData is manned by three full-time employees of the New Mexico Bureau of Mines and Mineral Resources:Ron Broadhead(Head Petroleum Geologist), Richard Chavez (Assistant Head), and Annabelle Lopez (Petroleum Records Clerk). The full-time staff members are presentto process,catalog,and interpret data and to see to the needs of visitors and other clients.Two or three studentsare employed part-time to processnew logs and to wash and processnew drill cuttingsprior to storage. The New MexicoLibrary of SubsurfaceData is open Monday through Friday from 8:00 a.m. to 5:00p.m. The telephonenumber is (s05)83s-s402. tr Northrop, S A ,'1,959, Minerals of New Mexico: University of New Mexico Press, Albuquerque, 565 pp. Owen, R., and Cox, E. T., 1865, Report on the mines of New Mexico: J. S. Watts, Washington, D.C., 59 pp. Page, N. J., 7986a, Descriptive model of Merensky reef PGE; rn Cox, D. P. and Singer, D. A. (eds.), Mineral deposit models: U S Geological Survey, Bulletin 1593, o 1.4 Page, N. J , 7986b, Descriptive model of Duluth Cu-NiPGE; in Cox, D P and Singer, D A. (eds ), Mineral deposit models: U S Geological Suruey, Bulletin 1693, o16 Page, N J , 1985c, Descriptive model of Noril'sk Cu NiPGE; iz Cox, D P and Singer, D A. (eds ), Mineral deposit models: U S Geological Survey, Bulletin 1693, P17 Phillips, K. A., 1980, Platinum in Arizona: Arizona Department of Mineral Resources, Circular 3, 3 pp Robertson, J. M., and Moench, R. H., 1979, The Pecos greenstone belt: a Proterozoic volcano-sedimentary sequence in the southern Sangre de Cristo Mountains, New Mexico: New Mexico Geological Society, Guidebook to 30th Field Conference, pp. 165-773. Schilling, I. H., 7960, Mineral resources of Taos County, New Mexico: New Mexico Bureau of Mines and Mineral Resources, Bulletin 71, 124 pp. Schmepfe, M M., and Grimaldi, F S , 1969, Determination of palladium and platinum by atomic absorption: Talanta, v. 76, pp,591-595. U S Bureau of Mines, 1987, Mineral commodity summaries 1987: U.S. Department of the Interior, 189 pp. Wyman, W. F., 1980, Precambrian geology of the Cow Creek ultramafic complex, San Miguel County, New Mexico: Unpublished M.S. thesis, New Mexico Institute of Mining and Technology, 125 pp. Zienteck, M. L., Allcott, G., Page, N. J., and Menzie, W. E , 1988, Opportunities for a platinum-group-element resource appraisal of the United States: U S Geological Survey, Open-file Report 88-254, l4pp. n Neu Mexico Geology May 1989