套管与水泥环胶结界面水力密封完整性评价实验研究  

Experimental study on the hydraulic seal integrity evaluation of casing-cement sheath bonding interface

作　　者：武治强 岳家平 李强 曹砚锋 耿亚楠 刘书杰 周建良 WU Zhiqiang;YUE Jiaping;LI Qiang;CAO Yanfeng;GENG Yanan;LIU Shujie;ZHOU Jianliang(CNOOC Research Institute Co.,Ltd.,Beijing 100028,China;CNOOC Ltd.,Beijing 100010,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028 [2]中国海洋石油有限公司,北京100010

出　　处：《中国海上油气》2018年第6期129-134,共6页China Offshore Oil and Gas

基　　金：“十二五”国家科技重大专项“多枝导流适度出砂技术(编号:2011ZX05024-003)”;中海石油(中国)有限公司综合科研项目“中海油井的完整性技术体系研究(编号:YXKY-2015-ZY-09)”部分研究成果。

摘　　要：受制于评价手段单一、水泥胶结缺陷及井况条件复杂等因素,传统固井质量评价技术无法有效评价套管与水泥环胶结界面水力密封完整性。将水力突破评价装置和水泥胶结评价测井技术相结合,开展了水力突破和水力流动路径评价室内实验研究,分析了水泥环胶结质量、有效封隔长度、套管尺寸等因素对水力密封完整性的影响,并对水力密封完整性评价研究进行了展望。研究结果表明,提高水泥胶结质量和增加水泥环有效封隔长度能够提高套管与水泥环胶结界面水力密封完整性,可为现场油井全周期完整性寿命设计提供借鉴。Due to limited evaluation means,cement bonding defects and complicated well conditions,traditional cementing quality evaluation technologies fail to effectively evaluate the hydraulic integrity of casing-cement sheath bonding interface.This paper combines the hydraulic breakthrough evaluation device with Cement Bond Logging technology,and conducts lab experimental research on hydraulic breakthrough and hydraulic flow path evaluation to analyze the influences of cement sheath bonding quality,effective sealing length,casing size on hydraulic integrity.The outlook on hydraulic integrity evaluation study was proposed.The research results show that improving the cement bonding quality and increasing the effective sealing length of cement sheath can improve the hydraulic integrity of casing-cement sheath bonding interface,and this research can provide reference for the full service-life integrity design of oil wells.

关 键 词：固井 套管 水泥环 胶结界面 水力密封完整性 实验评价 

分 类 号：TE281[石油与天然气工程—油气井工程]