长水平段连续管钻塞过程的软件模拟应用  

Software Simulation of Plug Drilling by Coiled Tubing in Long Horizontal Section

作　　者：辛永安[1] 盖志亮[1] 吕维平[1] 朱峰[1] 费节高[2] 金志雄 

机构地区：[1]中国石油集团钻井工程技术研究院江汉机械研究所 [2]川庆钻探工程有限公司长庆井下技术作业公司 [3]中国石油西部钻探工程有限公司

出　　处：《石油机械》2016年第9期109-112,共4页China Petroleum Machinery

基　　金：中国石油集团钻井工程技术研究院科研项目"长水平段连续管快钻桥塞关键技术研究"(DRJ201515)

摘　　要：长水平井多级压裂依然是页岩气开发的主要手段,水平段长度超过1 500 m以后,如何有效地实施连续管钻磨作业是现场施工的主要难题之一,软件模拟是指导现场人员解决这一难题的关键技术。结合现场施工的实际井例,介绍软件模拟在几个关键环节的应用。模拟分析结果表明:1使用水力振荡器可延长连续管在本井的作业深度;2使用水力振荡器可在4 455 m处的桥塞施加3 750 N以上的钻压,能用连续管完成该井的钻磨作业;3利用地面悬重差与钻压的关系可精确控制钻压,成功完成钻磨作业;4回归分析表明,该区块连续管下入和起出过程的摩擦因数分别为0.26和0.23的模拟计算结果与实际作业数据非常接近。研究结果对于长水平段连续管钻塞现场施工具有一定的参考作用。As long horizontal well multistage fracturing is still the main means ol shale gas development, when the horizontal section length exceed 1 500 m,effectively coiled tubing operation and milling is one of the main challenges of the field operation. Software simulation is the key technology to guide the field staff to address the problem. Taking actual well operation as case study, the applications of software simulation in several key aspects have been introduced. Simulation results show that：①hydraulic oscillator could extend the reach of coiled tubing; ②using hydraulic oscillator,3. 75 kN WOB could be applied on the bridge plug at depth of 4 455 m, and the milling operation could be done by coiled tubing; ③ the relationship between the surface weight difference and WOB could be used to precisely control WOB, helping successful milling operation;④regression analysis showed that the friction coefficient of tripping down and up coiled tubing at the operating block were 0. 26 and 0. 23 respectively ,and the simulation results and actual data matched well.

关 键 词：连续管 长水平段 钻磨 软件模拟 复合桥塞 

分 类 号：TE928[石油与天然气工程—石油机械设备]