石油钻采工艺2016，Vol.38Issue(6)：752-756,5.DOI:10.13639/j.odpt.2016.06.007
南海西部高温高压探井随钻扩眼技术
RWD technology for HTHP exploration wells in western South China Sea
李中 1李炎军 1杨立平 2杨玉豪 1吴江 1谢露3
作者信息
- 1. 中海石油 中国 有限公司湛江分公司
- 2. 中海油能源发展股份有限公司
- 3. 中海油能源发展股份有限公司工程技术公司湛江分公司
- 折叠
摘要
Abstract
The Ying-Qiong Basin in the western sea area of South China Sea is characterized by high geothermal gradient and high pressure coefifcient, so high-density drilling lfuid is needed in HTHP hole sections. However, the application of high-density drilling lfuid results in narrow safety density window, and coexistence of leakage and blowout in the process of well drilling. In order to increase drilling safety and efifciency of HTHP wells, reaming while drilling (RWD) technology is used to improve casing program so as to pro-vide the favorable safety window for drilling operation. In this paper, one HTHP well in the Ying-Qiong Basin was taken as an example. Its drilling dififculties and the corresponding countermeasures were investigated. Then, the RWD process was analyzed from the aspects of technical suitability, reaming tool selection, size selection of reaming tools and pilot bits, vibration analysis and hydraulic analysis of reaming tool, and key factors of ifeld technologies. And thus, the RWD technology is developed.关键词
海洋钻井/非常规井身结构/随钻扩眼/南海西部/高温高压Key words
offshore drilling/unconventional casing program/Reaming While Drilling (RWD)/Western South China Sea/high temperature and high pressure分类
能源科技引用本文复制引用
李中,李炎军,杨立平,杨玉豪,吴江,谢露..南海西部高温高压探井随钻扩眼技术[J].石油钻采工艺,2016,38(6):752-756,5.
