X井精准治理技术研究与应用  

Research and application of precise treatment technology for well X

作　　者：车阳 乔磊 王建国[3] 曹东建 杜卫强 蓝海峰 CHE Yang;QIAO Lei;WANG Jianguo;CAO Dongjian;DU Weiqiang;LAN Haifeng(Research Institute of Unconventional Oil and Gas Engineering,CNPC Engineering Technology R&D Company Limited,Beijing 102206,China;National Engineering Research Center for Oil&Gas Drilling and Completion Technology,Beijing 102206,China;Remaining Oil Exploration Technical Service Project Team,Daqing Drilling&Exploration Engineering Company,Daqing 163002,China;School of Petroleum Engineering,Northeast Petroleum University,Daqing 163319,China)

机构地区：[1]中国石油集团工程技术研究院有限公司非常规油气工程研究所,北京102206 [2]油气钻完井技术国家工程研究中心,北京102206 [3]大庆钻探工程公司剩余油挖潜技术服务项目经理部,黑龙江大庆163002 [4]东北石油大学石油工程学院,黑龙江大庆163319

出　　处：《断块油气田》2023年第2期347-352,共6页Fault-Block Oil & Gas Field

基　　金：中国石油天然气集团有限公司科技项目“无源磁导向救援井关键技术及配套工具研制”(2021DJ6506);中国石油集团工程技术研究院有限公司科技项目“无源磁导向仿真模拟实验系统研制”(CPET2022-11S)。

摘　　要：我国东部老油田套返问题日渐凸显,常规手段无法彻底治理。文中以大庆油田某采油厂X井为例,详细分析了该井基本情况及前期治理存在的问题,基于无源磁导向技术,形成了“3+1”多级治理思路。针对X井井深浅、地下压力层系复杂等问题,提出了优化磁测距精度和优化挤注压力的精准治理对策。现场实施完整的技术方案,即无源磁导向技术配合挤注水泥、射孔等技术手段,给X井重造一个完整的圈闭,封堵泄漏点。工程历经40 d,累计进行无源磁导向测量9次,两井之间的距离从首次测量的10.98 m缩短至0.16 m,分级挤注封堵后预留治理井作为观察通道。研究表明,200 d后X井再无新的油气水溢出,节约预期投资一半以上,解决了困扰采油厂多年的环保难题,为东部老油田的老井治理提供了可靠思路。The casing fluid-returning problem in the old oilfields of the eastern China is increasingly prominent,and conventional means can not completely treated it.Taking well X in a oil production plant of Daqing oil field as an example in this paper,the basic situation and problems of earlier treatment for well X are analyzed.Then,based on core-less magnetic steering technology,the multilevel treatment thinking"3+1"is formed.According to the shallow well depth and the complex underground formation pressure in well X and so on,precise treatment for the optimized magnetism ranging accuracy and squeezing pressure are put forward.In field application,the complete technical scheme is applied,which includes the core-less magnetic steering technology combined with extrusion cement,perforation and other technical means.Finally,the new trap for well X was reconstructed to plug the leakage point.The project had carried out 9 times measurements of the core-less magnetic steering technology in 40 days,and the distance between the two wells had been shortened from initial 10.98 m to 0.16 m.After staged squeeze injection,the treatment well was reserved as an observation channel.The results show that new fluid does not overflow anymore in well X within 200 days,more than half of the investment are saved,which solves the environment protection problems that have plagued the oil production plant for many years.A reliable idea was provided for the old well treatment in the eastern old oilfield.

关 键 词：老油田 环保 多级治理 磁测距 挤注 

分 类 号：TE281[石油与天然气工程—油气井工程]