Research On Sequence Stratigraphy Of The West Rift Area In Songliao Basin

This paper studies the form mechanism of the lithologic reservoir within S0 LamaDian Oilfield by Geology, This paper studies the form mechanism and the distributing rules of the oilfield passby the scientific means, providing the thereunder for the exploder project dispose of the lithologic reservoir and supplying gist of the oilfield production. The study indicates that Lama Dian Oilfield is layer structure lithologic reservoir, with the uniform interface of the oil and the gas and the water.The eight explorded oil layeres of SaPuGao have the ability of producing oil in the portrait if only the sandstone is developing. On the plane, the oillayers are continual distributingif only the sandstone is developing too. But the studing of getting stoneheart and testing the oil of the S0 oil layer indicates that in the outside oiliness of S0, there is oil layer as well as drying layer, and individual oil layer produces a little of stratum water,. The distributing of the oil layeres are abnormity and the character of the oiliness is complex. There is obvious difference between the oil layers of the LamaDian oilfield . The difference bring much difficulty for the studing of the reserves parameter the account of the reserves and the exploitation work. Therefore, it is need to beat out the form mechanism of the lithologic reservoir of the S0 and providing resource potential for the lasting development of the Lama Dian Oilfield.Being coached by the petroleum geology and combined the character of the area geology structure and area sediments, this paper studies the developing history of the Lama Dian oilfield and the distributing of the S0 sediments systematic, analyzes the hydrocarbon source condition and assayes the petroleum component of the S0 and contrasts the oil source using the logging curve ,the well of getting the stone core and the data of the examination of the oil. And then we can study the move and save condition of the oil and gas, and also we can dope out the distributing rule between the oil and water of the S0. After two years scientific research, this item finishes every content of the problem's opening and obtain the due indexes. Passby analyzing the S0 substance nature and distinguishing the oil sourse, we beat out the s0 petro character and the source and the form mechanism of the lithologic reservoir ,we analyze the geology condition of the formative of the petro , we estimate the quantity of the S0 petro resource , and we definitude the foreground of the petro resource. Therefore we can dope out the distributing law of the oil and water of the S0, and settle the base for the appraise of the reserves and the combinationg of the layer system empolder.The study indicates that the nature of the S0 oil is a little bad than the other oil layers , it has bigger relatively density, lower waxiness coten, bigger visxidity, bigger pastem content and higher freezing point. The S0 reservoir is autogeny and autostore and normal oil reservoir. The crude oil is mixture ,and it is from n1 and Qing2 -3 hydrocarbon rock. The best area of the S0 petro distributes in the east, the better is in the west ,the southwest and the north, the middle is worse.