梨树中央构造带后五家户浅层气藏分布特征及有利区预测  

Distribution characteristics of shallow gas reservoirs and prediction of favorable areas in Houwujiahu of Lishu central structural belt

作　　者：田军 TIAN Jun(Lishu Integrated Project Team,Northeast Oil and Gas Branch,SINOPEC,Changchun 130062,Jilin,China)

机构地区：[1]中石化东北油气分公司梨树一体化项目团队,吉林长春130062

出　　处：《吉林地质》2020年第2期26-32,共7页Jilin Geology

摘　　要：通过对梨树中央构造带后五家户浅层登娄库组小Ⅰ、小Ⅱ气藏研究,发现该区气藏受构造和岩性共同控制。储层特征研究结果表明,该区存在东北部、东南部双向物源,发育的辫状河三角洲沉积砂体整体上厚度小、横向岩性和物性变化快,后期被近南北向断裂切割,在东西向形成多个独立断块,与南北向岩性及物性边界共同形成了断块-岩性复合圈闭,控制了该区气藏的平面分布。结合成藏规律及外围单井资料,提出后五家户南北翼部也为油气聚集的有利区域。由于北部存在晚期断裂活动而对油气进行调整,因此建议优先对南部有利区域开展滚动评价研究工作。Based on the study of Xiao I and Xiao II gas reservoirs in the shallow Denglouku formation of Houwujiahu in the central structural belt of Lishu,it is found that the gas reservoirs in this area are controlled by both structure and lithology.Reservoir characteristics show that there are bi-directional provenances in the northeast and southeast of the area,and the developed braided river delta depositional sand bodies are small in thickness and changes rapidly in lateral lithology and physical properties. Later,it was cut by nearly N-S trending faults,and formed several independent fault blocks in E-W trending. The fault block lithology complex traps were formed together with the N-S trending lithology and physical boundary,which controlled the horizontal distribution of gas reservoirs in this area. Combining with reservoir-forming regularity and peripheral single well data,it is proposed that the north and south flanks of Houwujiahu are also favorable areas for hydrocarbon accumulation. Because of the late fault activity in the north and the adjustment of oil and gas,it is suggested that the rolling evaluation should be carried out in the favorable area in the south.

关 键 词：登娄库组小Ⅰ、小Ⅱ气藏 共同控制 双向物源 调整 

分 类 号：P618.130.2[天文地球—矿床学]