渤海西部海域某区块断层防漏、堵漏技术研究及应用  

Research and Application of Leakage Prevention and Plugging Technology in a Block in Western Bohai Sea Area

作　　者：陈建宏 汤柏松 罗伟 杜雪雷 方牧 CHEN Jianhong;TANG Bosong;LUO Wei;DU Xuelei;FANG Mu(Tianjin Branch,CNOOCCo.,Ltd.,Tianjin 300459,China;Drilling and Production Company,CNOOC Energy Technology and Services Limited,Tianjin 300452,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459 [2]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《天津科技》2023年第9期28-30,共3页Tianjin Science & Technology

摘　　要：渤海西部海域S油田受断鼻构造影响,存在4类共计52条断层。钻进过程因钻遇断层式破碎带,且地层承压能力低,造成了失返性漏失。通过分析漏失机理,制定了防漏技术方案,在漏失风险评估、钻井液性能控制方案及ECD精准预测与控制等方面,对该油田恶性漏失井,采用高承压堵漏技术,解决了断层漏失井堵漏成功率低的问题,对渤海油田断层防漏堵漏技术发展具有重要指导意义。Influenced by fault-nose structure,Oilfield S in western Bohai Sea area has 52 faults in 4 categories.During the drilling,the fault type fracture zone is encountered,and the formation pressure bearing capacity is low,resulting in loss of return leakage.By analyzing the leakage mechanism of the oilfield,the leakage prevention technical scheme is formulated from the aspects of leakage risk assessment,drilling fluid performance control scheme and ECD accurate prediction and control.For the malignant lost circulation wells in the oilfield,the high pressure-bearing plugging technology is used to solve the problem of low plugging success rate of the fault lost circulation wells,which is of great guiding significance to the development of fault leakage prevention and plugging technology in Bohai Oilfield.

关 键 词：渤海西部 断层 漏失特征 漏失机理 高承压堵漏技术 

分 类 号：TE31[石油与天然气工程—油气田开发工程]