低井斜着陆法在渤海浅层岩性油藏水平井的应用  

Application of low hole-deviation landing method to horizontal wells of shallow lithologic oil pool in Bohai Sea

作　　者：李琰 杨柳河 吴东昊 徐昱 秦磊 殷小琛 LI Yan;YANG Liuhe;WU Donghao;XU Yu;QIN Lei;YIN Xiaochen(CNOOC Ener Tech-Drilling&Production Co.,Tianjin 300452,China;CNOOC China Limited Tianjin Company,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司 [2]中海石油(中国)有限公司天津分公司

出　　处：《录井工程》2024年第3期63-68,共6页Mud Logging Engineering

摘　　要：渤海海域浅层岩性油藏具有目的层薄,砂体纵、横向变化快,砂体构型复杂等特征。采用较薄储层地质导向常用的“稳斜探顶”法往往出现着陆时钻穿目的层的情况,这给水平井的精确着陆带来了极大的困难和挑战。通过对相关资料进行归纳总结及对水平井常规着陆方法适用性进行分析和改进,提出了针对薄储层水平井的低井斜着陆地质导向方法,即稳斜找到目的层后立刻着陆,将剩余增斜段在水平段实施。该方法在H井的成功应用有效提高了薄储层水平井着陆的成功率,可为类似薄储层水平井的着陆导向提供借鉴参考。The shallow lithologic oil pool in Bohai Sea has the characteristics of thin target beds,rapid longitudinal and transverse change of sand body,complex sand body configuration,etc.Adopting the"stabilizing hole-deviation angle to explore the top of the target bed"method commonly used for thin reservoir geosteering often results in drilling through the target bed during landing,which brings great difficulties and challenges to the accurate landing of horizontal wells.By summarizing relevant data and analyzing and improving the applicability of conventional landing methods for horizontal wells,a low hole-deviation landing geosteering method for thin reservoir horizontal wells is proposed,that is,once the target layer is found by stabilizing hole-deviation angle,land immediately,and the remaining deflection section is implemented in the horizontal section.The successful application of this method in well H has confirmed that it effectively improves the landing success rate of thin reservoir horizontal well,and can provide reference for similar thin reservoir horizontal well landing geosteering.

关 键 词：低井斜着陆法 水平井 地质导向 河流相薄储层 岩性油藏 渤海油田 

分 类 号：TE132.1[石油与天然气工程—油气勘探]