侧钻井大通径尾管完井技术研究及应用  

Research and application of large-bore liner completion technology for side-tracking well

作　　者：吴柳根 冯德杰 齐鑫 唐明 WU Liugen;FENG Dejie;QI Xin;TANG Ming(Drilling Technology Research Institute,SINOPEC Shengli Petroleum Engineering Co.,Ltd.,Dongying 257017,Shandong,China)

机构地区：[1]中石化胜利石油工程有限公司井工艺研究院

出　　处：《石油钻采工艺》2021年第6期732-736,共5页Oil Drilling & Production Technology

基　　金：胜利工程公司攻关项目“水平段侧钻井防砂完井工具研制及应用研究”(编号:SKG2106)。

摘　　要：胜利油田侧钻井普遍为Ø177.8 mm和Ø139.7 mm套管侧钻井,存在环空间隙小、完井内径有限等问题,特别是潜山油藏二开次侧钻困难、稠油油藏侧钻井注汽工艺不配套、砂岩油藏侧钻后难以机械防砂等难题突出。为了解决上述难题,优选侧钻井扩眼工艺,优化大通径尾管完井方案设计,研发了大通径膨胀悬挂器、预应力地锚和胶塞测试接头等配套工具,并从完井尾管优选、水泥浆体系优化和提高套管居中度等方面完善配套工艺,形成了侧钻井大通径尾管完井技术。现场应用表明,该技术有效地解决了潜山、稠油和砂岩等特殊油藏侧钻井完井难题,具备进一步推广前景。The side-tracking wells in Shengli Oilfield commonly haveØ177.8 mm andØ139.7 mm casing,so they face the problems of small annulus clearance and limited completion inner diameter.And especially the second-spud side tracking in buried-hill oil reservoirs is difficult,there is no steam injection technology to support the side-tracking wells in heavy oil reservoir and it is hard to realize mechanical sand control after the side tracking in sandstone oil reservoirs.To solve these problems,the side-tracking well reaming technology was selected,the design of large-bore liner completion scheme was optimized,and several support tools were developed,such as large-bore expandable hanger,pre-stressed earth anchor and rubber test joint.In addition,the support technologies were improved from the aspects of completion liner selection,slurry system optimization and casing central degree improvement.Thus,the large-bore liner completion technology for side-tracking well was formed.The field application results indicate that this technology can effectively solve the completion difficulties of side-tracking wells in special oil reservoirs,such as buried-hill oil reservoirs,heavy oil reservoirs and sandstone oil reservoirs,and its popularization prospect is promising.

关 键 词：侧钻井 扩眼 大通径 尾管完井 现场应用 

分 类 号：TE257[石油与天然气工程—油气井工程]