靖边气田陕330井区奥陶纪喀斯特古地貌研究  

Study on Ordovician Karst palaeogeomorphology in Shan 330 area in Jingbian gasfield

作　　者：代金友[1] 穆中奇 王永林 刘茂国 DAI Jinyou;MU Zhongqi;WANG Yonglin;LIU Maoguo(College of Petroleum Engineering,China University of Petroleum(Beijing),Beijing 102249,China;Gas Production Plant 1,PetroChina Changqing Oilfield Company,Yinchuan Ningxia 750006,China)

机构地区：[1]中国石油大学(北京)石油工程学院,北京102249 [2]中国石油长庆油田分公司第一采气厂,宁夏银川750006

出　　处：《石油化工应用》2018年第3期116-121,共6页Petrochemical Industry Application

基　　金：国家重大专项"复杂油气田地质与提高采收率技术";项目编号:2008ZX05009-004-03

摘　　要：陕330井区是靖边气田东部扩边建产新区,储层由一套以溶蚀为主,经深度成岩改造的蒸发潮坪沉积组成,喀斯特古地貌对油气分布有着极其重要的控制作用。结合钻井分层资料,在喀斯特期古构造、地层出露、沉积厚度及残留厚度特征研究基础上,采用地貌剖面标定法进行了奥陶纪喀斯特古地貌恢复与刻画,分析了地貌与油气富集关系。结果表明,陕330井区发育台丘、斜坡、沟槽3类地貌单元。地貌单元控制了油气富集,台丘对油气富集最有利、斜坡次之,台丘区可作为下一步产能建设重点区。Shan 330 area is a new expansion and production area in the east of Jingbian gas field.The reservoir is composed of a set of evaporized tidal flat sediments characterized by dissolution and reworked by deep diagenesis,and the karst paleogeomorphology has an ex-tremely important control over the distribution of oil and gas.Based on the drilling stratified data and the study of palaeotectonics,stratigraphic exposure,sedimentary thickness and characteristics of residual thickness in the karstification period,the recovery and characteri-zation of Ordovician Karst paleoporphyrograph was carried out by the geomorphic profile calibration method,and the relationship between geomorphology and hydrocarbon enrichment was analyzed.The results was that there are three geomorphic units in Shan 330 area,mound,slope and trench and the enrichment of oil and gas is controlled by geomorphology units.Precisely,the mound is most favourible for oil and gas enrichment,followed by the slope.Thus,the mound can be viewed as the key area for productivity construction in the next step.

关 键 词：靖边气田 陕330井区 碳酸盐岩 古喀斯特 古地貌 剖面标定 

分 类 号：TE121.31[石油与天然气工程—油气勘探]