于奇地区中生界隐蔽圈闭预测的难点与对策  

Difficulties and Countermeasures of Subtle Reservoirs Exploration in YuQi Area

作　　者：苏娟[1] 张荣[1] 康仁东[1] 邓锋[1] 

机构地区：[1]中国石化西北油田分公司勘探开发研究院,新疆乌鲁木齐830011

出　　处：《新疆地质》2013年第B12期4-8,共5页Xinjiang Geology

摘　　要：于奇地区中生界碎屑岩隐蔽圈闭主要为低幅度构造圈闭和岩性圈闭,但这些圈闭受多因素影响,如砂体厚度薄,横向变化快等。针对不同圈闭类型的落实难点,总结相应技术对策,提出通过高分辨三维反演技术,剔除砂体顶面泥岩厚度,落实三叠系上油组砂体圈闭幅度。探索运用非线性参数岩性反演技术,对本区薄层砂体进行三维反演,结合顶、底、侧封等岩性圈闭的参数分析,落实了白垩系舒善河组和三叠系哈二段砂体岩性圈闭。Based on the comprehensive study of geology and drilling achievement, the traps of YUQI area include struc-ture trap with lower extent and lithologic trap.But the traps are affected by many factors, such as the thickness of sand body is little and changing rapidly. Based on analysis of difficulty of traps identify, methods are summarized. Based on analysis of particular of lower traps in study area, inversion technology of high definition 3-D seismic data, with getting rid of mud thickness, ensure traps extent of upper oil member in Triassic. Make an attempt of applying of no-linear litho-logic inversion into thin sandbody, integrated with lithologic trap parameter of top, bottom and sider. With the methods, lithologic traps of Shushahe formation and the secondary section of Halahatang formation can be identified.

关 键 词：于奇地区 隐蔽圈闭 低幅度构造圈闭 岩性圈闭 非线性参数 

分 类 号：P618.13[天文地球—矿床学]