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准噶尔盆地西北缘石炭—二叠系油气储集层,由于地史年代久远,岩性复杂,构造运动频繁,成岩后生变化较深,一方面使原生孔隙损失很多,另一方面又产生了以裂缝为主的次生孔隙,因此,使储层具有双重介质的特征。 近几年来,随着石炭—二叠系勘探开发的进展,八区乌尔禾组、检188断块、九区古生界、风3井区等开发试验区先后投入开发。本文将根据在实践中得到的一些资料。对这类油藏的油气渗流特征进行探讨,对合理开发这类油藏、提高经济效益是有现实意义的。
The Permo-Carboniferous-Permian oil and gas reservoirs in the northwestern margin of Junggar Basin, due to the long geo-history, complicated lithology and frequent tectonic movements, have profound changes in diagenesis and possesses great loss of primary porosity on the one hand and fractures Secondary pores, therefore, give the reservoir a dual medium character. In recent years, along with the progress of exploration and development of Carboniferous-Permian series, development zones such as Wuerhe Formation, Sejiao 188 fault block, Jiuxu Paleozoic and Feng 3 well have been put into development successively. This article will be based on some information obtained in practice. The exploration of the characteristics of oil and gas seepage in such reservoirs is of practical significance to the rational development of such reservoirs and the enhancement of economic benefits.