榆树林二氧化碳试验区套管失效分析  

Failure Analysis of Fractured Casing for CO_(2) Flooding Pilot Zone in Yushulin Oilfield

作　　者：李庆松[1,2] 傅海荣 刘俊伟[3] 刘向斌 韩重莲 李国[1,2] LI Qingsong;FU Hairong;LIU Junwei;LIU Xiangbin;HAN Zhonglian;LI Guo(Daqing Oilfield Production Engineering Research Institute, Daqing, Heilongjiang 163453, China;Heilongjiang Oil and Gas Reservoir Well Stimulation Key Laboratory, Daqing, Heilongjiang 163453, China;Daqing Oilfield Downhole Operation Company, Daqing, Heilongjiang 163453, China)

机构地区：[1]大庆油田有限责任公司采油工程研究院,黑龙江大庆163453 [2]黑龙江省油气藏增产增注重点实验室,黑龙江大庆163453 [3]大庆油田有限责任公司井下作业分公司,黑龙江大庆163453

出　　处：《石油管材与仪器》2022年第1期50-54,64,共6页Petroleum Tubular Goods & Instruments

摘　　要：榆树林二氧化碳驱某注气井套管断裂。通过断口形貌、化学成分、力学性能、金相、微观形貌及能谱技术等分析手段,对其进行断裂原因分析,并对断裂套管无裂纹完好处取样,进行实验室抗硫检测评价。结果表明该套管为硫化氢应力诱导氢致开裂机制所引起的应力腐蚀开裂。Casing fracture of a CO_(2) flooding gas injection well occurred in a pilot zone in Yushulin Oilfield.Failure reason was analyzed by means of fracture morphology analysis,mechanical properties test,metallographic examination,micro-morphology and energy spectrum analysis.Samples were taken from crack-free part of the broken casing and laboratory sulfur resistance test and evaluation were conducted.The results show that the casing failure is attributed to the stress corrosion cracking caused by hydrogen sulfide stress-oriented hydrogen induced cracking.

关 键 词：二氧化碳驱 套管 断裂 应力腐蚀开裂 

分 类 号：TE988.2[石油与天然气工程—石油机械设备]