f Gas Seepage and Oil Resources and Their Related Reservoirs, West Rawa and East Hahitha Cities, Western Iraq

Gas seepage has been taken place at shallow depth through two boreholes drilled for the purpose of ground water at west Rawa city, western Iraq. The depth reached by drilling is about 42 meters only, when gas blown out suddenly. A flame of fire to a height of 3 meters can be seen where local people put fire on it. The positions of the two boreholes are projected and their locations are along the northern fault of Anah graben. The possible source of the gas could be at great depth and has migrated to shallow depth through the faults system in the area. Also, this could be an extension of the giant Akkas gas field on the other side of Euphrates River. The same situation is also found where admixture of oil and water pumped from two boreholes drilled to depths of 117 and 230 meters for ground water purposes at east Haditha city, south of Anah graben. Such gas and oil indications may be used and encourage oil companies to consider such area in Al-Jazzera region for further studies and could be prolific reservoirs. The two regions are situated to the east of Euphrates River where there are series of large grabens crossing the region and at the same time most attentions for oil and gas explorations are concentrated to the west and north of them. Akkas gas field to the west has a dry gas at depths of 3570-3650 meters, while to the north, Khalesia well showed also gas. Seismic sections around the two regions in addition to the information from many deep boreholes drilled in the adjacent areas indicated the existence of large variations in the formation thicknesses and their continuation which are characteristics of the Paleozoic sequence in western Iraq. The expected hydrocarbon reservoirs in Al-jazzera region are within the Paleozoic formations as in the Akkas area and Anah graben.