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Home My WebLink About162-027_BLM_2 STANDARD FORM NO. 64 Office Memorâ1ulum· · .-.......'.'., UNITED STATES GOVERNMENT TO Files DATE: December 14, 1962 FROM District Geolgoist SUBJECT : Abandonment Tazlina #1 It was proposed to drill Tazlina #1 to 9,000 feet. On October 22, Union request- ed permission to abandon at 8,837 fee~, 163 feet short of the proposed depth. In the absence of the Supervisor, permission was granted. The company states that they found no oil and gas shows, encountered no water sands, and no sand at all above 5,600 feet just claystone. Below 5,600 feet there were a few 10-foot sand beds. In other words, no permeability reservoir rocks were encountered, just some thin sands in a predominately shale section. There was good Upper Cretaceous to 6,600 feet. 8,260 feet was the lowest core taken. The rocks may have been Upper Jurassic (Shell) or Lower Cretaceous (ðOcal). There was no change in lithology from the top to the bottom. There 'Was a change ìn dip at 7,000 feet. The dip was southeast above and southwest, below. Perhaps an unconformity or a fault was enoountered at. this horizon. At 7,300 feet there were steep dips 400 to 650.1 From 8,000 feet down the shale 'Was badly fractured and they may be next to ~ fault zo~e. The only age ccnfirmation comes from the fossils. Apparently there is debate as to their age assignment. It would appear that they were in the Matanuska formation and may have been in either the Nelchina (Lower Cretaceous or Naknek formation (Upper Jurassìc) or even possibly Chinitna. This is not known at the present time. ,~.,.......... ~:.-, ~ ~ '2.-',- ~ ~ ~(V1 1-/, L, po ,<.J , ~., ( R. A. M. Schmidt "'~ ,---- . "I , Í' - ~':'. ~' Files December 14, 1962 District Geolgoist Abandon1D8Dt Tazlina III \ It vas proposed to drill Tazlina 111 to 9,000 feet. 3october 22, Union request- ed permission to abandon at 8,8.37 r'3~, 163 teet sho \ of the proposed depth. In the absence of the Superrlsor, permission vas gran .~. j\ The company states that they found no oil and gas shows~\ encountered no water sande, and no sand at all above 5,600 feet just claystone. Below 5,600 teet there were a few la-foot sand beds. In other words. no permeability reservoir rocks were encountered, just so_ thin sands in a predomi~tely shale section. There vas good Upper Cretaceous to 6,600 feet. 8,260 feet was the lowest core taken. The rooks may have been Upper Jurassic (shell) or Lower Cretaceous (.ocal). There vas no change in lithology from the top tc the bottom. There ¡vas a change in dip at 7,000 feet. The dip was scutheast above and scuthwest belcw. Perhaps an unconformity or a fault was encOW)tered at this horizon. At 7,)00 feet there were steep dips 400 to 65°,r From 8,000 feet down the shale was badly fractured and they may be next to a fault lone. 'I'he only age ccnfirmation cemes from the fossils. Apparently there is debate as to their age assignment. It 'Would appear that they were in the Matanuska fOrnlation and 'IIIay have been in either the Nelchina (Lower Cretaceous or Naknek formation (Upper Jurassic) or eyen possibly Chinitna. This is not known at the present tIme. /) 9-----. /.... j~~ è(/ . R.l M. Schmidt RAMSchmidt:dmc:12í14t62 .~. V~~·~ t::le-Þ ·"'L ft 1- uL /"ëP~ ~..>--, (-I. L/ 4>V aòL--"1I......~-...., (.,.-' i~:il.tol' . ~ fUa41. ~Q t.'ilS.&mÛl. awl.w '!¡¡)fa 2 t.vø :1aØ~t_ ~~£e". J'œM$:1C aø:í_tttø. ~ ¡f,t.~~f¡ oa~_ f~~~. a ~If. ~..~~.. av&tlMhl. ~t8q. ,tetGJNt t:.Þu 1M...._ ~ i.uta-I ~U 1__"A 4 .1 t C;.1\...~.. _~_~~.t&_ "i'ì t,ü ~f ..t ~ vut.. l\Or't~ Nta a -f*b, øl to ~. t.1Þi _11 .~W G:M ~lchLh (if uÙt~þ t;öat üøy gel ù. eratM-eo. t'4\. i"vu1f' it bA~ iitnrÚ_ '.00;:# fMC ~ ~~~ It Ù t.1t Utt1~a hü ~ a.n4 _ 4U:i;J~U¡! .~tiøu.. Sev.ral üta ,œilMt.t.¡(¡ "" U:be bcttu the sent W _14"t'&~. w1t;' . e~N *1u10a b6 ~1DtM (Jut aa4a c.~t¡¡¡}U~ ~ ,$ ~_~ "_,¡¡tà & _~. ~1e't. . R.A.M. 'Ø. OriS. .. 2 cc: $u,.nisGr. 0 & G eopiu CtQ: .1..£, lh:auh ., Mœ'£'lid. b:.~gl GeolOI1-.t. ~Ií ~al_ RAMSchmidt:mm;7/16/62 Oe~ftl 11I4 Jny 3. 2: u. 3 I .......-1, nor' a',¡"'~J 4 c:r 5 0... 100' 100' - gra.vel 200' ... 7's00' 7ÞOO' ... 77's0' 7750' ... 8100' Basal sand of Cretaceous 8100' ... 8hOO· 8hOO· ... 8500' and Recommendations J ¡;¡¡ unit HO'lIli1tver, this car.!. sC8.rcely t.he Union Oil be the policy of the S\J.t"vey to da.ta? It does seE.\J1l to be the it as difl'icuJ:t as possible confidential data but pertinent d<íìta. that is not µublished of the infornUition in søe¡¡lß to be the only in:forrr.ation directly pertinerrt The l.uÜt o1¡tline. marked in blaek on land map, !tit'! ca:n accepted, and the proposed depth of test '\lell" 7,.$001 seEHI1S reasonable, based mostly on available published info~ation. R. A. M. Schmidt Li.. A. Ortg. &: 2 cc: Supenisor', 0 &. G cc: Chief, ßra~nch of Class. PJU-1Schmidt/jlu/4/17/62 STANDARD FORM NO. 64 Office Memorandum · UNITED STATES GOVERNMENT TO ~t:t.þ e t... a1 DATE: 4~ FROM SUBJECT: oil Un:i:t- Itm. at a loas at of thtd.r CC;f1e~~. Do it Qr t.b1ø t.f:.'tetmique? _ to mo~e ~ M. H. Soyster April 11, 1961 R. A.. !1. Schmidt Tazlina Unit Area On looking over the geological infoJ"Illation submitted, I would like to point. out that. there is insufficient infoI"lJlation on the geologic map.. Ther~~ are no seismic dips" i.e. no strike or dips indieated seismic work. There is nothing to support the lines that have dra\'lrl and. called the UclosiDg contour indicated by seismic worku. As we discussed, you ¡uight wish to explain this to Bradley if he wants to go ahead with the unit application. $TANDARD FORM ND. 84 Office Memorandum · UNITED STATES GOVERNMENT TO Files FROM District Geologist SUBJECT: Tazlina Unit Area DATE: April 11, 1961 Branch of Oil and Gas Leasing received the application for this unit January 9, 1961 and subsequently were asked by Haring Brad- ley to withhold any action on the unit until he notified them. MCB received the application from BOGO March 17, 1961. On look- ing over the geological information submitted, I would like to point out that there is insufficient information on the geologic map. There are no seismic dips, i.e. no strike or dips indicated by seismic Í'vork. There is nothing to support the lines that have been drai,n.l and ,call~d the U closing contour indicated by seismic Ìi'JorkH an'id' \'l"(h~ušs"êd this today: He will tell Bradley that there is insufi'lcient information submitted when the opportunity arises. The information given in the written part of the report is little more than information already been published or available to any- one. His cited source vms Bun. 1094. The following probable stratigraphic column for the Tazlina Unit indicates: 0 100' 100' - 200' 200' - 7500' 7500' - 7750' 7750' - 81001 8100' - 8400' 84001 - 85001 , / l' I' ø' '\.'~~' , Quaternary gravel Tertiary gravel Matanuska shale Basal sand of Matanuska formation Lower Cretaceous shale and sandstone Nelchina limestone Lower Cretaceous sandstone and conglomerate