UNITED STATES GEOLOGICAL SURVEY DATA FROM
UNITED STATESDEPARTMENT OF THE INTERIORGEOLOGICAL SURVEYDATA FROM GEOTHERMAL TEST WELLS NEAR MOUNT HOOD, OREGONBy J. H. Robison, L. S. Force!la, and M. W. GannettOPEN-FILE REPORT 81-1002Menlo Park, California1981
CONTENTSPageExplanation of data--- — — — — — — --- — — — — — — — — -1ILLUSTRATIONSFIGURE 1Map of Mt. Hood area showing locations of geothermalwells——— — — — ——————— ——— — — — —————2FIGURE 2Diagram of well-numbering system- — ------ — ------ —3FIGURES 3-9 Graphs of temperature measurements in wells- — --- — — 18TABLESTABLE 1Specifications and drillers' logs of wells- — — — ---- 4
DATA FROM GEOTHERMAL TEST WELLS NEAR MOUNT HOOD, OREGONbyJ. H. Robison, L. S. Forcella, and M. W. GannettEXPLANATION OF DATAThis report includes well specifications, drillers' logs, and temperaturelogs of geothermal test wells drilled at 7 sites near Mt. Hood Oregon. The wellswere drilled in 1979 and 1980 under contract to the U.S. Geological Survey.Theproject, funded by the U.S. Department of Energy, was part of an interagencyeffort to determine the geothermal potential of Mt. Hood.The Agencies involvedWere U.S. Department of Energy, U.S. Forest Service, U.S. Geological Survey, andOregon Department of Geology and Mineral Industries.Locations of the Geological Survey wells are shown in figure 1.Alsoshown are locations of two deep geothermal test wells in the Old Maid Flatarea that were drilled by other agencies.The numbering system for wellidentification is shown on figure 2.Descriptions of lithology are based on examination of drill cuttingswith the aid of a binocular microscope.Many of the surveys listed in tableI were made by the authors, using wireline-logging equipment mounted in asmall van; most of the surveys listed for the Pucci chair!ift site were made byan oilfield service company.Temperature surveys shown in figures 3-9 weremade with portable and van-mounted equipment employing thermistor probes thathave an accuracy and precision of 0.01 C or better.Twenty samples of drill cuttings from the Pucci chairlift well weresubmitted to the Geothermal Laboratory at Southern Methodist University,Dallas, Texas.Bulk or solid-component thermal conductivities were deter-mined under the direction of Dr. David D. Blackwell; the values range from3.90 to 5.21 meal/cm, sec. C.1
Laurance Lake\-m-26abaEHot BranchT.I Slcdd McGeeCreekH!» » 7ACloud CapFlat* No. 1MT HOODA 3,425 m(11,235 ft)TimberlineLodge7dbbPuccTCT.2 S3cca- Mt.HoodA MeadowsWh1teRiver16cacr w135)T.3 S30adbHwy 26 & 35Junction01234 MILES IIiiIT" 0123456 KILOMETERSFIGURE 1.-- Map of Mt. Hood area showing locations of geothermal wells.
R.8U.R.9 E.R.10 E.R.ll ET.I S.T.2 S.T.3 S.T.4 S.101817192030293212b——IT 1 6 ——bK3111b ' §J\--a—c ! b3S/9E-16c«dFIGURE 2. -- Well-numbering system.
TABLE 1 -- Specifications and drillers' logs of wells.lS/9E-26aba.Eliot Branch site.Hood River County, Oregon.ft).Cathedral Ridge quadrangle (7.5').45 27'35" N.12r37'58" W.Alt. 860 m (2,820Drilled in 1980 to 220 m (720 ft) by American Deep Drilling & Ex-ploration, Oregon City, Oregon, using air-rotary method (including airhammer to install casing).Construction:26-cm (10 1/4-in) inside diameter welded casing, surface to78 m (256 ft). 20.6-cm (8 1/8-in) id welded casing, surface to 92 m (301ft).5-cm (2-in) inside diameter tubing, surface to 218 m (715 ft), with2-m (6-ft) well screen on end.20.0-cm (7 7/8-in) hole from 92 m (301 ft)to 220 m (720 ft).Water level in tubing:34.8 m (114 ft), Oct. 1980.Logs and surveys:Depth (m)Lithology (see generalized lithology below)0 - 220Temperature, Nov. 22, 1980 (max 10.3 C)0 - 217Gamma1 - 220Caliper69 - 220
TABLE 1 -- Specifications and drillers' logs of wells (continued).Generalized LithologyThickness(meters)Depth(meters)Clastic debris; angular to subrounded volcaniclasticparticles; degree of alteration variable8484Mudflow deposits; about 50 percent crystals, withplagioclase, hypersthene, and hornblende17101Lithic mudflow; subrounded to angular volcanic clasts6107Lithic mudflow; subrounded to angular volcanic clasts;hematite alteration18125212716143Porphyritic hypersthene andesite3146Mudflow or clastic debries; 75 percent crystals ofplagioclase, hypersthene314910159Mudflow or clastic debris; subangular volcanic clasts,and crystals3162Clastic debris; subrounded volcanic clasts3165Mudflow or clastic debris; subangular volcanic clasts,and crystals15180Mudflow or clastic debris, some hematite-stained,includes clasts of hypocrystalline basalt19199Porphyritic hypersthene andesite2201Mudflow or clastic debris; hematite-stained, altered9210Mudflow or clastic debris; more rounded and alteredthan above10220Porphyritic hypersthene andesiteMudflow or clastic debrisPorhyritic hypersthene andesite
TABLE 1 -- Specifications and drillers' logs of wells (continued).lS/9E-31aca.Clear Branch site.Cathedral Ridge quadrangle (7.5').Hood River County, Oregon. 45 26'30" N.1,280 m (4,200 ft).DeepDrilling121 42'57" W.Alt. approx.Drilled in 1980 to 311 m (1,020 ft) by American& Exploration, OregonCity, Oregon,using air-rotary andmud-rotary methods.Construction:20.6-cm (8 1/8-in) inside diameter welded casing, surface to69 m (226 ft).5-cm (2-in) inside diameter tubing, surface to 311 m (1,020ft),with sealed end.20.0-cm (7 7/8-in) hole 69 m (226 ft) to 311 m(1,020 ft).Water level in casing:Above land surface.Logs and surveys:Depth (m)Litology (see generalized lithology below0 - 311Temperature, Nov. 19, 1980 (max. 10.86 C)0 - 311Caliper0-6969 - 306Gamma3 - 311Spontaneous potential/resistivity (single point) 69 - 300
TABLE 1 -- Specifications and drillers' logs of wells (continued).Generalized LithologyThickness(meters)Colluvial deposits; angular clasts of hornblendeandesite, pyroxene andesiteDepth(meters)557479Hypersthene andesite flows; partly fractured and permeable 26105Fluvial (?) debris; rounded clasts of andesite, basalt,and crystals; hydrothermally altered; partly silty12117Cemented epiclastic debris; matrix of small crystals andorange and green clay; abundant hydrothermalalteration40157Epiclastic debris; angular to rounded volcanic lithicand crystal debris16173417755232Hypersthene andesite flow3235Cemented, altered, andesite debris6241Hypersthene andesite flow524665311Epiclastic debris; assortment of clasts of andesite,basalt, and crystals of plagioclase, and hypersthene;some hematite staining and hydrothermal alterationHypersthene andesite, fractured; clay matrixCemented epiclastic debris of andesite and basalt; someclay matrix, alteration of fragmentsCemented epiclastic debris of andesite, some basalt;varying degrees of oxidation
TABLE 1 -- Specifications and drillers' logs of wells (continued).2S/8E-lcdd.McGee Creek site.County. 45 25'08" N.Bull Run Lake quadrangle (7.5').121 46'06" W.Alt. 915 m (3,000 ft).Hood RiverIn 1979drilled to 235 m (770 ft) by Skyles Well Drilling, Oregon City, Oregon.In1980 deepened to 610 m (2,000 ft) using mud-rotary method by Orvail BucknerWell Drilling, Redmond, Oregon.Construction:20.6-cm (8 1/8-in) inside diameter welded casing, surface to45 m (147 ft), cemented to surface.5-cm (2-in) inside diameter tubing,surface to 608 m (1,994 ft), with 2-m (6-ft) well screen on end.20.0-cm(7 7/8-in) hole from 46 m (150 ft) to 610 m (2,000 ft).Water Level in tubing:Approximately 10 m (30 ft) below land surface.Logs and surveys:Depth (m)Lithology (see generalized lithology below)0 - 610Temperature, Aug. 12, 1980 (max 60.0 C)0 - 608Gamma2 - 603Caliper45 - 608Resistivity, single point45 - 323Generalized LithologyThickness(meters)Depth(meters)Volcanic and glacial debris, including mudflows,block and ash deposits; fragments ofandesite and dacite4747Pyroxene andesite, with hematite alteration206797652128Mudflow or flow breccia, alteredPorphyritic pyroxene andesite, highly altered
TABLE 1 -- Specifications and drillers' logs of wells (continued).Generalized LithologyThickness(meters)Depth(meters)Mudflow deposits3131Pyroxene andesite, highly altered6137Mudflow deposits, highly altered6143Pyroxene andesite, altered12155Hornblende andesite, altered34189Pyroxene andesite112004204Hornblende andesite, fresh16220Pyroxene andesite15235Hornblende andesite39274Reddish-gray clay37311Dark-gray pyroxene andesite243356341Pyroxene andesite16357Mudflow deposits; mostly plagioclase crystals153726378Mudflow deposits; mostly plagioclase crystals20398Hornblende andesite flows29427Mudflow deposits; about 25 percent crystals46473Andesitic lavas, hydrothermally altered, withinterbedded flow breccias39512852023543Epiclastic volcanic depositsMudflow deposits; altered lithic clastsPyroxene andesitePyroxene andesiteMudflow deposts; altered lithic clasts
TABLE 1 -- Specifications and drillers' logs of wells low deposits: 60 percent lithic clasts,altered23573Hornblende andesite15588Mudflow deposits; 1 ithic clasts, altered136019610Generalized LithologyPyroxene andesite, alteredHornblende andesite , slightly altered3S/9E-3cca.Mt Hood Meadows site.River County, Oregon.(5,460 ft).Drilled inMount Hood South quadrangle (7.5'). Hood45 20'00" N.121 0 39'36" W.Alt. approx. 1,665 m1980 to 355 m (1,165 ft) by American Deep Drilling& Exploration, Oregon City, Oregon, using mud-rotary method.Construction:20.6-cm (8 1/8-in) inside diameter welded casing, surface to50 m (165 ft) 5-cm (2-in) inside diameter tubing, surface to 352 m (1,155ft), with sealed end. 20.0-cm (7 7/8-in) hole from 50 m (165 ft) to 355 m(1,165 ft).Water level:Not determined; hole filled with drilling mud.Logs and surveys:Depth (m)Lithology (see generalized below)0 - 355Temperature, Nov. 18, 1980 (max 11.6 C)5 - 350Gamma3 - 35510
TABLE 1 -- Specifications and drillers' logs of wells (continued).Thickness(meters)Generalized LithologyColluvium; andesite, rare basaltDepth(meters)441317Porphyritic hypersthene andesite724Epiclastic debris; andesite, basalt, claymatrix; hematite stained6301545Interflow of andesitic debris; oxidized348Porphyritic hypersthene andesite351Epiclastic debris; andesite, some basalt253116487210826881071959204Epiclastic debris; andesite and basalt30234Porphyritic hypersthene andesite15249Epiclastic debris; hematite weathering7256Basalt flow; dark gray, porphyritic7263Epiclastic debris; basalt and andesite6269102793282Epiclastic debris; andesite, basalt; subangularto rounded; soft clay matrixPorphyritic hypersthene andesite, partly fractured andoxidizedPorphyritic hypersthene andesiteEpiclastic debris of basalt, andesitePorphyritic hypersthene andesiteBasalt flow; brownish black, porphyriticEpiclastic debris; subround to subangular andesite andbasalt fragments, with some pale orange clayBasalt flow; black, porphyriticPorphyritic hypersthene andesiteInterflow zone of debris; hematite-stained11
TABLE 1 -- Specifications and drillers' logs of wells (continued).Thickness(meters)Generalized LithologyBasalt flow; grayish black, porphyritic, oxidizedDepth(meters)8290Porphyritic hypersthene andesite; oxidized11301Epiclastic debris; andesitic32333Epiclastic debris; basaltic12345Basalt flow; dark gray, porphyritic3348Epiclastic debris; basalt, with some andesite73553S/9E-7dbb.Pucci chairlift site.Mount Hood South quadrangle (7.5 1 ).Clackamas County, Oregon. 45 19' 18" N.(5,340 ft).121 0 42'46" W.Alt. 1,628 mIn 1979 drilled to 274 m (900 ft) using air-rotary methodand to 610 m (2,002 ft) using mud-rotary method by Orvail Buckner WellDrilling, Redmond, Oregon.In 1980 deepened to 1,220 m (4,003 ft) usingmud-rotary method by Holman Drilling Corp., Spokane, Washington; completedOct. 1980.Construction:26-cm (10 1/4-in) inside diameter welded casing, surface to61 m (200 ft); cemented to surface.20.6-cm (8 1/8-in) inside diameterwelded casing, surface to 189 m (620 ft).15.6-cm (6 1/8-in) weldedcasing, surface to 438 m (1,437 ft); suspended inside 15.6-cm casing withcasing hanger; packers in annulus between casing and hole at 948 m (3,110ft), 1,030 m (3,380 ft), and 1,095 m (3,590 ft); slot perforation 1,098 m(3,600 ft).15.2-cm (6-in) open hole from 1,107 m (3,630 ft) to 1,220 m(4,003 ft).Water Level in casing:573 m (1,880 ft) below land surface, Nov. 26,1980. During drilling, water level as shallow as 80 m (260 ft), as on Sept12
TABLE 1 — Specifications and drillers' logs of wells (continued).20, 1979, when depth of well was 190 m (622 ft).On Dec. 3, 1979water level approx. 215 m (700 ft), inside tubing then installedto 604 m (1,980 ft).Logs and surveys:Depth (m)Lithology (see generalized lithology,fol lowing) .0 - 1 ,220Temperature - Dec. 3, 1979- Dec. 25, 1980; not stabilized0 - 5800 - 1 ,052Television survey (videocassette), 15.6-cmcasing0 -366Gyroscopic directional survey0 -438Casing profile caliper, in 15.6-cm casing0 -471Open-hole caliper438 - 1 ,220Spontaneous potential438 - 1 ,220Dual induction (resistivity)438 - 1 ,220Natural gamma438 - 1 ,220Density438 - 1 ,220Neutron - porosity438 - 1 ,220Acoustic velocity438 - 1 ,220Microseismogram (fracture finder)438 - 1 ,220Thickness(meters)Generalized LithologyDepth(meters)Volcanic debris6767Pyroxene andesite flow30976103Epiclastic volcanic deposits13
TABLE 1 -- Specifications and drillers' logs of wells 0Reddish-gray and gray pyroxene andesite flows76216Epiclastic volcanic deposits, with somehydrothermal alteration59275Pyroxene andesite18293220513852123554Reddish-gray to gray pyroxene andesite9563Black, diktytaxitic olivine basalt9572Epiclastic volcanic deposits12584Pyroxene andesite12596Epiclastic volcanic deposits5601Hypersthene andesite961020630Hypersthene andesite9639Epiclastic volcanic deposits6645Pyroxene andesite8653386916697Epiclastic volcanic deposits15712Vesicular pyroxene andesite, partly oxidized197316737Generalized LithologyAndes ite flowsEpiclastic volcanic depositsEpiclastic volcanic deposits, with somehydrothermal alterationPyroxene andesiteEpiclastic volcanic depositsEpiclastic volcanic depositsVolcanic deposits, with hematite alterationHypersthene andesiteEpiclastic volcanic deposits14
TABLE 1 — Specifications and drillers' logs of wells (continued).Thickness(meters)Depth(meters)Orange and brownish-gray altered andesite43780Epiclastic volcanic deposits, highly altered,with chlorite, hematite, and limonite22802Pyroxene andesite flows, hydrothermal ly altered49851Clastic andesite deposits, altered11862Reddish-brown pyroxene andesite22884989319912Epiclastic volcanic deposits, altered7919Reddish-brown andesite, with hematitealteration12931Epiclastic volcanic deposits, altered9940Dark, porphyritic pyroxene andesite flows,with chlorite alteration981038Epiclastic volcanic deposits, withsecondary mineralization52109091099Epiclastic volcanic deposits; intenselyaltered lava fragments431142Grayish-brown pyroxene andesite, varyingfrom fresh to altered781220Generalized LithologyAndesitic deposits, hydrothermal ly alteredDark, altered pyroxene andesiteProxene andesite, with gray to black chloritealteration3D/9E-16cad.White River pit site.Mount Hood South quadrangle (7. 5').Hood River County, Oregon. 45 18'22" N.1,330 m (4,360 ft).12r40'34" W. Alt. approx.Drilled to 305 m (1,002 ft) in 1979 by Harness15
TABLE 1 -- Specifications and drillers' logs of wells (continued).Drilling Co., Tucson, Arizona, using mud-rotary method.Construction:17.8-cm (7-in) inside diameter welded casing surface to 71 m(232 ft). 5-cm (2-in) id tubing, surface to 288 m (945 ft), with 2-m (6-ft)well screen on end.15.9-cm (6 1/4-in) hole from 71 m (1,002 ft).Water level in tubing 44 m (144 ft), Aug. 13, 1980.Logs and surveys:Depth (m)Temperature, Nov. 21, 1980 (max 15.8 C)0 - 290Gamma2 - 290Lithology - Preliminary examination shows thatto total depth of 305 m (1,002 ft), formationconsists of volcaniclastic debris, dominated byfragments derived from Mount Hood andesite flows.3S/9E-30adb.(7.5').Highway 26 & 35 junction site.Mount Hood South quadrangleClackamas County, Oregon. 45 16'56" N.1,107 m (6,630 ft).121 0 42'35" W.Alt.Drilled to 35 m (114 ft) by Orvail Buckner WellDrilling, Redmond, Oregon, using air-rotary method, and to 294 m (965ft) by Harness Drilling Co., Tucson, Arizona, using mud-rotary method;completed Sept. 1980.Construction:31-cm (12-in) id welded casing, surface to 35 m (114 ft).20.6-cm (8 1/8-in) welded casing, surface to 66 m (216 ft).5-cm (2-in)id tubing, surface to 291 m (955 ft), with 2-m (6-ft) well screen onend. 25-cm (9 7/8-in) hole, 68 m (223 ft) to 107 m (350 ft); 20.0-cm (77/8-in) hole to 294 m (965 ft).16
TABLE 1 -- Specifications and drillers' logs of wells (continued).Water level in tubing:Approx. 25 m (82 ft) below land surface, Nov. 1980Logs and surveys:Depth (m)Lithology (see preliminary descriptionbelow)0 - 294Temperature, Nov. 20, 1980 (max 15.5 C)5 - 288Caliper68 - 293Gamma3 - 293Spontaneous potential-resistivity(single point)66 - 293Preliminary description of lithologyThickness(meters)Alluvial deposits of andesitic volcanic debris6969Volcanic debris; dark andesitic fragments, basalticfragments, ash73142314535180114294Vesicular basaltOlivine basaltVolcanic debris; dark andesitic fragments, basalticfragments, ash, clays17Depth(meters)
501005150-2002501012TEMPERATURE IN CFIGURE 3 — Graph of temperature measurements 1n well lS/9E-26aba.«Eliot Branch site, Ht.'Hood area, Oregon. 45 27'35" N. 121 37'58" U.Altitude 860 meters (2,820 feet). Temperature measurementsKovember 22, 1980 by 0. Robison & J. Blevins.18
50100*» 1505200250300350J68TEMPERATURE IN C1012FIGURE 4 — Graph of temperature measurements In well lS/9E-31aca.Clear Branch site. Mt. Hood area, Oregon. 45 26 I 30H N. 121 42'57 M UAltitude approximately 1,250 meters (4,100 feet). Temperature easurements November 19, 1980 by J. Robison & J. Blevlns.19
-to- -300 - ——70010203040TEMPERATURE IN C50FIGURE B — Graph of temperature measurements 1n well 2S/8E-lcdd.McGee Creek site, Mt. Hood area. Oregon. 45 28'08" N. 121 46'08" W.Altitude 915 meters (3.000 feet). Temperature measurements August 12.1980 by R. Spafford. Southern Methodist University.20
50100150200250500550TEMPERATURE IN o C1214FIGURE 6 — Graph of temperature measurements 1n well 3S/9E-3cca.Mt. Hood Meadows site, Mt. Hood area, Oregon. 45 20'00" ff.121*39*36* W. Altitude approximately 1,665 meters (5,460 feet).Temperature measurements November 18, 1980 by J. Roblson & J. Blevlns.21
100-- 1000-12001400 1*00 00-1*001 2200700.2400- MOO 00-- 2SOO- MOO5*001000- J40CMOO1100-MOO f «Ml- KBATOU XB fPtOMC 7 — Grtpti of tw traturv Maiurawntt In Mil 3S/K»7«tob.Clulrim tiu. Nt. Hood art*. Orvoon. 4S H'18- H. 1210 2'48* M.AU1tw4t 1.828 Mttrs (S.S40 ft«t). Tt«p«r«tur* MaturcMfitt October 15. 1960ly 6. Hack. Ortgon OtpartMiit Ctoloojr and Nlntrtl InductrlM.22
50100150200250300810121416TB1PERATURE IN CFIGURE 8 — Graph of temperature measurements in well 3S/9E-16cad.White River pit site, Mt. Hood area, Oregon. 45 18 I 22 M N.121 40'34M W. Altitude approximately 1,330 meters (4,360 feet).Temperature measurements November 21, 1980 by 0. Robison & 0. Blevins23
100 -150-wQ200-250-300410121416TEMPERATURE IN CFIGURE 9 — Graph of temperature measurements 1n well 3S/9E-30adb.Highway 26 & 35 junction site, Mt. Hood area, Oregon.45 16'56" N. 121042'35" W. Altitude 1,107 meters (3,630 feet).Temperature measurements November 20, 1980 by J. Robison & J. Blevins24
Were U.S. Department of Energy, U.S. Forest Service, U.S. Geological Survey, and Oregon Department of Geology and Mineral Industries. Locations of the Geological Survey wells are shown in figure 1. Also shown are locations of two deep geothermal test wells in the Old Mai
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