2006-11-23 04:27:25 · 5 answers · asked by annie g 1 in Science & Mathematics ➔ Earth Sciences & Geology
First off sedimentary rock is necessary for oil and gas formation. A known anticline (hill shaped folding), is necessary for the entrapment of the oil and gas. The rock needs to be old enough for the oil and gas forming to occur. Your not going to find alot of oil in gas in quaternary or tertiary rock. I live in an area known as the Bradford oil field and the rock age here is mainly Devonian.
Many paleoentologists are being employed these days in this field of oil exploration. A core or test sample is drilled and brought to the surface and from the fossils found a determination can be made if this is a possible site for oil. (2 cent version)
2006-11-23 07:14:44 · answer #1 · answered by ? 6 · 0⤊ 0⤋
He would look primarily for particular kinds of discontinuities in rock formations. One very strong indicator would be the presence of a permeable rock layer folded or fractured, with an impermeable layer above it. This would have the effect of creating a "dome" of permeable rock. Another would be the presence of subterranean water with impermeable rock above. The water would be found at the base of the "dome" with oil above, and finally gas. Most exploration for oil is now done by satellite searches of promising localities.
2006-11-23 15:06:43 · answer #2 · answered by JIMBO 4 · 0⤊ 0⤋
actually the process of exploration for oil and gas is not a direct process .. its indirect one in which we look for a certain type of rocks , geologic structures , stratigraphic sequences , physical characteristics , and good environments in which we expect oil to form or migrate .. to form oil we need a marine sedimentary rock , rich in organic matter , well buried at good depths so the temperature and pressure are enough to convert the organic matter into oil or gas ... they migrate into the reservoir rocks (permeable and porous) till they are trapped in trap rocks (porous and permeable but surrounded by impermeable rocks) .. these trap rock maybe structural or stratigraphic (so we look for suitable structure and stratigraphic sequences) ..
2006-11-23 14:29:29 · answer #3 · answered by Geo06 5 · 2⤊ 0⤋
What do geologists look for when looking for oil and gas? Presumably oil and gas....
2006-11-23 12:35:53 · answer #4 · answered by Come on in, the water's lovely 5 · 0⤊ 2⤋
A gas station.
2006-11-23 12:36:45 · answer #5 · answered by Anonymous · 0⤊ 2⤋