Labels:text | screenshot | line | rectangle | parallel | diagram OCR: SEEPAGE ANTICLINE ->K- FAULT STRATIGRAPHIC CORE TRAP DRILLING Oll gas Oil Of ga water dense TTTTTTTT TTTTTT ‘OCKS warer LLL TILLL TTTTTTTTTTT LL Surface seepages & oil springs The anticline is a dome caused by Faults result from a break ar slip in the This is based on the probability that the located the sites of the first wells. This is the most difficult of all cil- upfolding of rock strata Oil & gas are earth's rock crust. When afault places bearing structures to locate No falds found in rock strata closest to the As all known surface seepages in trapped in porous structures at the a porous stratum against an imperious pronounced up & down folds of rock surface are continued in approximately the U.S. were located & drilled tops of these domes, with impervious years ago, more complex one, a natural petroleum trap is strata are present, the trap being the same pattern at greater depths. strata above & belowthe porous rock formed Oil may be found on either or formed by changes in the porosity of Small partable drilling toos are used to methods of finding oil were layer. In most reservoirs, the oil floats bothsides of afault at varying depths. the formation. Only exhaustive penetrate surface soils & take cores, or developed & adopted long on salt water, which prevents geological study can locate a rock samples, from the topmost rock since dispersion of the oil downward. stratigraphic trap. The Great East layers. By drilling a series of cores, a Texas field, largest in the U.S. is a reasonably accurate picture of the stratigraphictrap. probable subsurface gedlogy can be obtained.
(.png)
