石油钻采工艺2016，Vol.38Issue(6)：808-812,5.DOI:10.13639/j.odpt.2016.06.019
高压窄密度窗口油基钻井液固井技术
Cementing technology in the environment of oil based drilling lfuid with high-pressure narrow-density window
赵宝祥 1陈江华 1任国琛 2郑浩鹏 1童岳3
作者信息
- 1. 中海石油 中国 有限公司湛江分公司
- 2. 中海油田服务股份有限公司湛江分公司
- 3. 中海油能源发展工程技术湛江分公司
- 折叠
摘要
Abstract
The cementing operation in offshore oil ifelds is faced with many challenges. For example, circulation loss and gas chan-neling tend to happen at high-pressure narrow-density windows. When oil based drilling lfuid is used, the iflter cakes on the cementing wall can’t be removed easily. And the cementing displacement efifciency of highly-deviated directional wells is low. There are some technical measures to solve these problems. First, high-density lfushing lfuid was adopted to improve the cleaning quality of iflter cakes on casing walls and borehole walls in the environment of oil based drilling lfuid, after the technical dififculties related with well cementa-tion were analyzed. Second, the polymer reinforced slurry system was adopted and bi-setting slurry column design was optimized based on the dynamic cementing pressure loss calculation and the pressure stability calculation, so that the circulation loss was prevented and the pressure stability of reservoir was realized. And third, the rotating liner cementing technology was adopted to rotate the liner in the process of well cementation so as to improve the cleanout quality of lfushing lfuid and the displacement efifciency of cement slurry. These technical measures were successfully applied in Weizhou Oil Field for the cementing operation of oil based drilling lfuid with high pressure coefifcient (1.61 g/cm3), high gas/oil ratio (358 m3/m3) and narrow density window (0.12 g/cm3). And the cementing quality was evaluated as good level.关键词
高压/窄密度窗口/油基钻井液/固井/顶替效率Key words
high pressure/narrow density window/oil based drilling lfuid/well cementation/displacement efifciency分类
能源科技引用本文复制引用
赵宝祥,陈江华,任国琛,郑浩鹏,童岳..高压窄密度窗口油基钻井液固井技术[J].石油钻采工艺,2016,38(6):808-812,5.
