砂体识别组合方法在侧缘尖灭油藏的应用  

Application of sand body identification and combination method in lateral pinchout reservoir

作　　者：王芳[1,2] 张云 李蕾[1,2] WANG Fang;ZHANG Yun;LI Lei(Petroleum Exploration and Development Research Institute,Henan Oilfield Branch Company,Sinopec,Henan Nanyang 473132,China;Henan EOR Key Laboratory,Henan Nanyang 473132,China)

机构地区：[1]中国石油化工股份有限公司河南油田分公司勘探开发研究院,河南南阳473132 [2]河南省提高石油采收率重点实验室,河南南阳473132

出　　处：《非常规油气》2021年第6期24-31,118,共9页Unconventional Oil & Gas

基　　金：中石化河南油田分公司项目“泌阳凹陷东南部岩性油藏储层结构特征及效益开发对策研究”(2017-013)。

摘　　要：赵凹油田泌73-1井区为侧缘尖灭油藏,为了弄清该区的砂体展布特征,部署新井进行效益开发,针对砂体变化速度快,砂体识别、储量动用认识不清等问题,充分利用钻井、测井、测试等资料,开展了单一河道砂体识别及砂体组合方法河道识别。结果表明:1)将储层分为油组、小层、单层、单一河道砂体4级;单一河道砂体纵向边界识别标志主要为泥岩夹层,平面边界识别标志主要为河道间泥岩沉积和砂体厚度差异。2)垂直于物源方向砂体横向展布宽度较窄,砂体分布宽度为300~500 m,油砂体分布区间为180~220 m,顺物源方向延伸长度为1 400~1 800 m。应用该研究成果,新部署泌73-6井证实了预测的准确性,对同类油藏砂体展布研究具有重要的借鉴意义。Well Bi73-1 block in Zhaoao Oilfield is a lateral pinchout reservoir.In order to make clear the distribution characteristics of sand body in this area and deploy new wells for benefit development, the single channel sand body identification and sand body combination method are carried out by making full use of drilling, logging and testing data to solve the problems of fast sand body change, unclear recognition of sand body identification and reserve production. The results show that: 1)The reservoir is divided into four levels: oil group, small layer, single layer and single channel sand body.The longitudinal boundary identification mark of single channel sand body is mainly mudstone interlayer, and the plane boundary identification mark is mainly mudstone deposition between channels and the difference of sand body thickness.2)The horizontal distribution width of sand body perpendicular to the source direction is narrow, the distribution width of sand body is 300~500 m, the distribution range of oil sand body is 180~220 m, and the extension length along the source direction is 1 400~1 800 m. Apply the research results, the new well Bi73-6 is deployed and the successful drilling proves the accuracy of the prediction, which has important reference significance for the study of sand body distribution in similar reservoirs.

关 键 词：侧缘尖灭油藏 单一河道砂体 识别 组合 

分 类 号：TE321[石油与天然气工程—油气田开发工程]