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<br />W <br />"l <br />..,. <br /> <br />Brushy Basin Member of Morrison Formation <br /> <br />Dakota Sandstone <br /> <br /> <br />'. <br />~, <br /> <br />Figure 4. OutcroPPing strata of the Brushy Basm and Westwater Canyon Members of the Mornson Formation. capped by <br />the Dakota Sandstone. in the Grealer Aneth Oil Field, San Juan County. Utah. <br /> <br />(i,d). f.'llnS!" of igneous n....:b that wen: intnlded <br />through 11\'CrlYlllg 'Irata of ~h:~Olllic age during Ihe: <br />Tertiary Perino. <br /> <br />History of Oil-Field Development <br /> <br />Drilling began in the Blanding Ba"ln (...outhc:m <br />ParadO\ Sa...in) in the Aneth are~l a... early 3" 19JO. <br />when a cahle-toolte..t h~)le llllW\,'d oil from the Per- <br />mi:.m-age DeChdly Sandstone and pmdu,.:ed ga... irom <br />the Penn..yl\'anian-age Herron:,a Group (Smou...e. <br />1993). The' fir,! majordi...co\ery well. hO\\t'H:r. wa... not <br />drilled unti119-HI at Bllundary Bulte tlig. II. \\!It're oil <br />was prodUi.:ed from the Pcomlian-age Cl\Conino Sand- <br />...tone and the Ismay zonco of the Parado\ Formation <br />(Henn(ha GrouP) (Clem and Bro'-'n. 19~";. p. 34). <br />After i!<o{llated hole~ were I.killed b~ Shell Oil Compan~ <br />in [he early I Y5{h. the di...nwery well at Aneth wa... <br />drilled hy the Te\:b COl11pan~ t\ater Te'l\,KO E>:plma- <br /> <br />lIon and Productil1ll. Inc.) in February 1956 in T...1-O S.. <br />R. 24 E.. Scoc, 23 (Quigley. 145R. p. 247). Thi... well <br />produced oil from the bmay and Oe...ert Creek wnes of <br />the Parado\ Formatilln from a depth of ahoul 5,850 ft. <br />During 1956 and 1957. the Ratherford. ~kElmo Creek. <br />and While' ~l('...a Field... al..:o \\ere di...cowred and recog- <br />niled a... being pan of a ...ingle large pool: hence. in <br />1461. all of these tield... were I.:ombined and included <br />undcr [he name "Greatt.'r Aneth Oil Field," Subsequent <br />Jrillmg during the late I Q51).., innea...ed the proven acre- <br />age of the Grealcr Aneth Oil Field and rc!<oulted in the <br />Ji...('O\cry of numeroU'" <;atellile oil tield.... including <br />Sl'uth "'may-Flodine Par" (195bl. Recapture Creek <br />(195~). Blufft I 95tll. Gllthic ~1e..:a (1957). and <br />TI)honadla (195711Clem and Brown. 19S4)(tlg. II. <br />Additional operator... thai werc acti\'(' in the early explo- <br />ration and di...('o\ef) of the~e and lllher lielJ~ included <br />Carter. SUIl. Gulf. Pure. Superior, and Conlinental Oil <br />Compames l~hXlre and Hawb. 199.h The principal <br />operator... In the Greater Aneth Oil FielJ currently <br /> <br />9 <br />