Up ae Don oe Steeoke Toay apa La, baa Sede Ge €0tage 06 Oo celaims | By Robert W. ance | Tribune Business Editor | S sore oil fields will be found in the Mississippian forma:| © tion of the Paradox Basin in Utah, geologist Glen M. Ruby,| Springdale, told the Utah Securities suse Assn. Thursday. | = internationally | © Mr. Ruby,— famous geologist, ajtesied a dinner | = meeting of the group at the Uni-/# versity Club. He said discoveries of oil in the| | at Big Flat and at Pure| | Mississippian Oil Co.’s new Northwest Lisbon| # U.S.A. No. 1 in northern part of the| 2 basin had let the way to future de- velopment of new oil fields in south, eastern Utah. “This certainly would be an un- Mr. not found usual salt basin if other pools rnick , in future prospecting,’ Mr. Ruby reported. were) Latest reports on the Pure Northwest Lisbon, producing | from Mississippian and Devonian formations indicate that “it ought to make a couple fs nOueane imecicas of oil daily on a three-quarter inch choke.” | HE SAID PURE RECENTLY increased choke size and recorded not only an advance ‘in production test rate but an increase in pressures, the latter fact being unusual. MR. RUBY told the securities brokers that in his opinion the oil found at both Big Flat and at Northwest Lisbon originally formed in a shale zone at top of Mississippian imme- diately below the salt beds in. the Paradox (Pennsylvanian) | formations. — re then. ‘migrated both jatetellly into the| and downward faulting and Mississippian as a result of step times,” Mr. Ruby said. in later"| ae SS aaa PLACE TO LOOK for oil in the Paradox Basin, | pe fin my opinion, is. TREE Oy beneath the salt flows,” ! he | we ea said. contig close no was there that apparent is it said He between faulting and other structural features of formations| above the salt and those like the MisiselDpies section, below the Pennsylvanian-aged rocks. This complicates the job of the oil finder as he onan! rely solely on either surface geology or subsurface seismic efolaielvweni? he ee. the veins se which oo. not ee Dae ee | said. ‘THEORY that oil was| : MR. ‘RUBY “ADVANCED THE formed in the Paradox Basin in ancient times when organisms | within a saturated salt solution, died and: fell: to the floor oF : the ancient saline sea. “The lack of oxygen on the sea Mnbor, ” Mr, Ruby said, “may be the key to oil deposition. Otherwise, the oil-forming organisms may be oxidized, with result that there is no oil} created.” .Of course there must be movement of the beds in Jater times so that the “mist oil” of formed can be concen-}) trated in droplets and that, ultimately, the droplets might migrate to a place of entrapment that hundreds of millions of years later would be discovered as an oil field. MR. RUBY SAID THE known) surface-wise as the more widespread than | Mississippian section of what ie ) Paradox Basin actually is much by some the basin as now’ oe 4 ee for example, into | e have traced the Big Flat fein the San Rafael Swell right to the headwaters of the Straight | ‘Wash north of the Temple Mountain district in|: uranium Emery County,” he said. The basin. has been. pictured con- |: from about Green River, Emery | ventionally as running County, to the eoue: Corriens tate, a distance of about 280 miles, . | i