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准噶尔盆地MXZ下侏罗统三工河组二段油藏位于盆1井西凹陷和马桥凸起的结合部,它具有上下两套含油段,由于沉积差异,二者含油气特点也不尽相同,一亚段为曲流河三角洲前缘分支河道砂体沉积,油藏为典型的砂体尖灭油藏;二亚段为辫状河三角洲前缘多期叠加的分支河道砂体,主要形成“夹层”封挡油藏。本文通过油气源对比、构造发育演化、包裹体测温等多种手段总结了本区主要的油气成藏模式,即“深源多期充注,网状立体输导,早期构造成藏,后期岩性调整”。
The second member of the Lower Triassic MXZ of the MXZ in the Junggar Basin is located in the junction of the western sag and the Maqiao bulge in Well Pan 1 and has two upper and lower oil-bearing segments. Because of sedimentary differences, The first sub-section is the sand body of channel distributary channel in the front of the meandering river delta, and the reservoir is a typical sandbody extinction reservoir. The second sub-section is the branch channel sand body superimposed by the braided river delta front, mainly Formation of “sandwich” sealed reservoir. This paper summarizes the main oil and gas accumulation models in this area by means of hydrocarbon source contrast, tectonic evolution and temperature measurement of inclusions, which are “multi-period filling in deep source, three-dimensional meshing in network, early tectonic accumulation, Lithological adjustment. ”