Oil Show in Geothermal Test- -:

I a hazards and limitations I I

I General-Interest Publications I

Map Mesa Next --Page 2

Hazards Guide --Page 2

Just Released

I --Page 3

Uranium and Radon

Larry D. Fellows Director and State Geologist

In 1993 a geothermal test hole, the 1 Alpine-Federal, was drilled 6 miles north of the town of Alpine in southern Apache County. An oil show was present and valuable subsurface information was obtained. The purpose of the project, which was hnded by the Arizona Department of Commerce and the U.S. Department of Energy, was to assess the hot-dry-rock geothermal potential of the area by measuring the temperature of granite. The contractor estimated granite to be approximately

submitted and approved. Two-inch-diameter core

was taken from 502 feet below the surface to the bottom of the hole. Steven L. Rauzi, Oil and Gas Program Administrator, reported that limestone units in the Supai Group (Permian age) from 4,000- 4,400 feet, including all of the Fort Apache Limestone, had a slight petroliferous odor which became strong when acid was applied. Oil was bleeding from vertical fractures in a 4-foot zone at the top of this interval. Heavy oil, oil staining, and dead oil were previously described from the upper Supai in several

wells to the north and west. The hole penetrated the

top 604 feet of the Supai Group, the total thickness of which is estimated to be almost 1,500 feet. Rauzi estimated that the hole would have to be deepened 1,500-2,100 feet to reach granite, assuming there are no complications due to faulting or intrusive igneous rocks.

Dark-colored igneous rocks, believed to be dikes, were present at three places within the Supai Group. Oil is produced from similar igneous rocks that intruded strata in the Hermosa Group

see OIL SHOW, page 4 - -

4,200 feet below the surface. Granite had not been reached at 4,505 feet and drilling was stopped. The temperature at that depth was not as high as had been anticipated A detailed report is being prepared by the contractor and will be released by the Arizona Geologi-

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cal-sufle~ (AzGs) Figure I . Corefhm the Ft . Apache Limeslone. Note cauitks in top row (arrows). -

after it has been Quarter for scale.

.Shipping & Handling

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_ ip %&' W I t d a t e s : than $1,0l,'add $1.00 -

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40,91- 50mS add 8.e , w.01- 100.00, rdd 1a.25

Over 10.@, d d D% o&er courrtries*

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C - -- " . L x\ - - -< ,-. -.. 'r - - -/ 'updata Oil aud Gas ' \ AZGS staff pay QU? , :( \ - .OIL s y y , frommPagl I

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I - / , / 1 , , . (PubIIcati~llAl to \ CO--ion po~des qnd ~ ~ ~ 1 6 ~ ':- .

+ @e&sTl+aniab%ge) GI , incorporate infdrmation reguhtionsand maintaip' I , . - the ~ i ~ e l i - b i ~ m a h , f i e l d ~ ;obtained from the 1 i well files and aireposi- ' ; is the ~ i a ~ n ~ ~ s l ~ c r ,,f , ,

, - I " in ITortheas.temin~st . r . - '~lpine-~ederd aKd oder tov'of cores and cuttings Arizona Gedogical Survey, , L /--

', - - ?kc& c&ty. A wells ddlled sinke 1975. i <obtained duri~g ddling. - Pub"shed quak** '

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( *scribed the 1 The upper $an of the . Cuttings from 4,300 ' ' , , - - I . -- -- , I \ ' .h#e-~kderal well& '. >ore (502-z255 fesE), , -wells;mostl~ water welrs, - fife sythng@L -, - 1 . \ - an a$icle in the MI and which incl~des the Datil,-- an$ corks fkom more Governor \ ' . - 1

GqsJotlrt@l Oanmry 3, . and Baca fbnnations of / ~ h a n 300 holes are in the - . r"

% - - - ~ a r r y D. ~elibws - ,- i l99& p. 52-54). He TeniaryLage, is on loan to repository; An in&&$ Director - 6, Stata Geologist

I - 1 _ __ J$ub~quently completed -the ~ e w ~ e x i c o ~ u ~ a u the well, cores is-availab$ --

-Rose Ellen MeDonnell I ' 1-3 more/dqtailed report,- of Mines arid Mineral, as 0% 93/-2.,. Coresand I

Admid Serves W o e r t AZGS Ope?LTile Report Resoyrces (New ~ e d c o ' s cuttings y y be ex&- ' ,

\ \ ' pet el;^. corrao \ , --l- i (o&) 941, in which he ,/ k~tdbeologi5al Brvey) iie&bY the public: A -

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Design and Production i ' d&~a"sk~-the potential in Socorm, to fadlitate -let6 bt of oil add- 1, , -

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, focp&roleum bGqeath rpgbnatsddies_of - / //Publications i a y b$ '

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royks-6f the m i t e - ' I 'er t i i~ geology; - obtaiKed at no charge by the &~~mix ~ h l o ~ i c a f ~ u r v e ~ - i _ ,~ciufit.h volcadic field . . ~iizona - oil and -from the AZGS.- : , . 9 P " ~ ~ * F M P ~ E ~ \ .. -, For more infofmation ,/

, - . \- ' - in east-'central Arizona., -Gas Cpnservagon Com- -- - . - Mht.mat@czn, abou: how 'dssion regulaEs the , abou~ the Alpine well o r I '* to, 6btai4 thiC&port=i~ ;arlllidg and produdion oil and gas in Arizona, in

,;- ' given-en-page 3 af this of oil, gas, hehm, and general, pleasd contact , . '- - ,- issue?&~ also , gkbthenr$l reso6rcds. 1 Steve Rauzi at\& AZGS. -

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,.~ ~ i l ~ ~ & ~ ~ ~ , - - page 3 Pistrig, which indudes - ch6noweth; Fo&bbuted r- \ ,' ,J the pbPphdne, are Report 93-B, 30 p., 1

eastyipping narmal w i t 6 thelmap area.' - , - Sheet, sqle J:62,500. ' ' ,-.. ', - fa&.% ?fhe -Aorthern '-I $7.00 - . " I . /\ '- i -part of the ~irg'mia . - - ~ e o & b ardpmduc- - The geologic seEting, ': I ._ _ / mln&d,tdis@ct, which ti6n-bis~ov oytbe ' mining activities)and

inchides the Tan - ( - upzn jum oredeposits - ufaaum prohuction ,-Deenien dKe, afrd the intbe Cbmemn a,ma, from-100 properties from & ~ t h ~ h l pan of the\%\ 6'aedtino Coutity; - 1951-63 ate described in

, Dorado Pass mineral - -2rizBna:-W.L. ' . - ,' the,report. \ .. . ,' /. - / - -