深水钻井井壁坍塌压力计算研究  

Study on Calculation of Borehole Collapse Pressure of Deep Water Drilling Well

作　　者：吴百烈 朱磊 李准 程宇雄 吴建树 WU Bailie;ZHU Lei;LI Zhun;CHENG Yuxiong;WU Jianshu(CNOOC Research Institute Co.Ltd.,Beijing 100028,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028

出　　处：《重庆科技学院学报（自然科学版）》2023年第3期36-40,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：中海石油(中国)有限公司科研项目“深层古近系油藏高效开发技术研究”(CNOOC-KJ 135 ZDXM 37 SZ 05 SZ)。

摘　　要：针对深水钻井中井眼周围存在弹塑性区的实际情况,研究其井壁稳定性问题。基于浅层土的力学性质,建立了适用于深水浅层的弹塑性力学模型;基于深水深层岩石与陆上岩石相似的力学性质,建立了适用于深水深层的弹性力学模型。根据不同应力条件下的井眼破裂准则,建立了适用于深水钻井的坍塌压力预测模型,并给出了模型参数求解方法。In response to the actual situation of elastic plastic zones around the wellbore in deep water drilling,the stability of the wellbore is studied.Based on mechanical properties of shallow soil,the elastic-plastic mechanical model is established.Based on the similarity of mechanical properties between deep water rocks and onshore rocks,an elastic mechanical model is set up.Meanwhile,a collapse pressure prediction model suitable for deep water drilling is established based on wellbore fracture criteria under different stress conditions,and a method for solving model parameters is provided.

关 键 词：深水钻井 坍塌压力 弹塑性 破裂准则 测井 

分 类 号：TE52[石油与天然气工程—油气田开发工程]