石油钻采工艺2016，Vol.38Issue(1)：123-127,5.DOI:10.13639/j.odpt.2016.01.025
水平井油管钻磨复合桥塞技术及应用
Composite bridge plug drilling and milling technology by tubing in horizontal well and its application
席仲琛 1徐迎新 1曹欣1
作者信息
- 1. 川庆钻探工程有限公司长庆井下技术作业公司
- 折叠
摘要
Abstract
In view of high cost and easy pipe sticking when drilling and milling composite bridge plug using coiled tubing and in conjunction with the characteristics of low formation pressure of Changqing tight reservoirs, this paper presents a technique of drilling and milling composite bridge plug with tubing-conveyed tool in horizontal wells. A lfat milling shoe was improved; long-life screw with stable performance was optimized while considering both RPM and torque; a drilling and milling tool assembly with localization was made by the principle of realizing functions and simplicity. The miminum construction displacement was designed as per annular slip velocity model. The maximum drilling pump pressure was obtained by calculating eccentric annular pressure loss. In order to accurately calculate bit pressure in horizontal wells, the technique of adding bit pressure was proposed as per the maximum allowable bit pressure of screw to control suspension weight while controlling the pump pressure drop. This technology was ifeld tested in 8 wells in Changqing oilifeld, and a maximum of 13 composite bridge plugs were drilled out in one run; the milling time for single bridge plug was less than 120 min and the fastest time for drilling and milling one plug was 40 min, so its performace-price ratio is no less than that of coiled tubing.关键词
水平井/油管/钻磨/复合桥塞/排量/泵压/钻压Key words
horizontal well/tubing/drilling and milling/composite bridge plug/displacement/pump pressure/bit pressure分类
能源科技引用本文复制引用
席仲琛,徐迎新,曹欣..水平井油管钻磨复合桥塞技术及应用[J].石油钻采工艺,2016,38(1):123-127,5.
