鲁迈拉油田井身完整性管理体系的建立与应用  

ESTABLISHMENT AND PRACTICE OF THE WELLBORE INTEGRITY MANAGING SYSTEM FOR RUMAILA OILFIELD

作　　者：刘淼[1] 

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

出　　处：《大庆石油地质与开发》2016年第2期75-80,共6页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油股份公司科技攻关项目"鲁迈拉油田井身完整性诊断和修复技术的研究与实践"(kjcg-2014086)

摘　　要：鲁迈拉油田油水井的最初设计仅仅考虑了储层与地面之间放置一个压力屏障,而不是国际上普遍采用的双屏障体系,同时由于油井产出流体伴生腐蚀介质,造成了包括油套管腐蚀等很多潜在风险。加之鲁迈拉油田由于战争因素油水井井口年久失修,井身完整性问题频发,严重影响了油田生产作业。2010年以来,通过对鲁迈拉油田井身完整性问题开展调查研究,借鉴国际相关标准,形成了一套完备的井身完整性诊断及维修管理体系。4年间,常规维护保养近7 000井次,完整性诊断工艺应用400井次,井口及井下油套管修复作业约100井次,使75口油水井恢复了完整性。井身完整性评价及管理体系的成功应用,减少了油田HSE事故发生概率,降低了产量损失,油田累计增油370×10~4t。The initial oil and water well designs of Rumaila Oilfield just consider only one pressure barrier between the reservoirs and the surfaces,rather than the more usual international dual barrier system,and moreover the corrosive media along with the produced fluids in the oil wells result in the happening of many potential risks such as the casing corrosion and so forth; and furthermore because of the war factor,the wells lack maintenance for quite a long time,the problem of the wellbore integrity occurs frequently,so the oilfield operation and production are seriously influenced. Since 2010,through investigating the problem and drawing the experiences of the international corresponding standards,a set of the diagnosing and maintaining & managing systems of the wellbore integrity are established. During the four years,7 000 well-time conventional maintenances have been conducted,400 well-time integral diagnosing technologies have been executed,about 100 well-time corrective maintenances have been performed for the wellheads,downhole oil tubings and casings,thus 75 oil and water wells were recovered from the problem. The successful utilization of the wellbore integrity evaluating and managing system has reduced the occurrence probability of HSE incidents and decreased the production loss; the incremental oil is up to 3. 7 million tons for the whole oilfield.

关 键 词：井身完整性 管理体系 压力屏障 诊断 维护 维修 

分 类 号：TE358[石油与天然气工程—油气田开发工程]