论文部分内容阅读
松辽盆地滨北地区目前已发现深层和中浅层两套烃源岩:深层断陷层序的沙河子组和营城组发育的暗色泥岩和含煤地层及中浅层坳陷层序发育的青山口组和嫩江组暗色泥岩。该区发育有中浅层砂岩、深层砂砾岩和火山岩储集层,嫩一段、嫩二段泥岩及青一段泥岩为区域性盖层。根据地层层序和构造特征分析,认为本区勘探应遵循以下原则:①注重深层、兼探中浅层;②坳陷层序以找油为主,断陷层序以找气为主,断陷层序中应特别注意寻找类似于XS1井的火山岩气藏;③以滨北地区的逆断层带为线索,重点寻找前古近纪形成并保存下来的油气藏和新近纪以来形成的油气藏。图4参18
Up to now, two sets of source rocks in deep and middle-shallow layers have been found in Binbei area of Songliao Basin: the Shahezi Formation in the deep faulting sequence and the dark mudstone, coal-bearing strata and mid-shallow depression developed in Yingcheng Formation Qingshankou Formation and Nenjiang Formation dark mudstone. Middle-shallow sandstones, deep-gravel rocks and volcanic reservoirs are developed in this area. The first-stage, second-stage mudstone and Qing-1 Member mudstone are regional cap rocks. According to stratigraphic sequence and tectonic feature analysis, it is considered that the exploration in this area should follow the following principles: (1) paying attention to deep and middle-shallow exploration; (2) depressing sequence is mainly oil finding; In the delamination sequence, special attention should be paid to find volcanic gas reservoirs similar to the XS1 well; (3) taking the reverse fault zone in the Binbei area as a clue, focusing on reservoirs formed and preserved since Pre-Paleogene and reservoirs formed since the Neo-Cenozoic. Figure 4 Reference 18