石油钻采工艺2016，Vol.38Issue(6)：762-765,4.DOI:10.13639/j.odpt.2016.06.009
海上首口高温高压水平井小井眼打孔管下入技术
Running technology for perforation pipe in the slim hole of the ifrst offshore HPHT horizontal well
魏安超 1冯雪松 2韩成 1李祝军 2徐斐2
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工程技术湛江分公司
- 折叠
摘要
Abstract
Well F7H of Dongfang 1-1 Gas Field in western South China Sea is the ifrst domestic offshore HPHT horizontal well. In this well, Ø148.6 mm bit is used in Ø177.8 mm liner to drill to the target layer, so it is necessary to run Ø114.3 mm perforation pipe in Ø148.6 mm hole for well completion. Well F7H is characterized by slim hole, complex well trajectory and long horizontal section with maximum hole deviation angle of 95.1°. The target layer is lithologically complex with reservoir temperature about 150℃and reservoir pressure coefifcient 1.94. The running of perforation pipe in the hole is faced with large torque and drag, instable borehole wall and high well control risk. To solve these problems, the running friction of pipe string is calculated, the high-temperature lubricating drilling lfuid system and the specially structured hanging packer assembly are adopted, and overlfow and circulation loss are monitored intently. Ultimately, the perforation pipe running is successfully completed in the slim hole of HPHT horizontal well.关键词
水平井/小井眼/完井/打孔管/高温高压/封隔器Key words
horizontal well/slim hole/well completion/perforation pipe/high temperature/high pressure/packer分类
能源科技引用本文复制引用
魏安超,冯雪松,韩成,李祝军,徐斐..海上首口高温高压水平井小井眼打孔管下入技术[J].石油钻采工艺,2016,38(6):762-765,4.
