改进型低自由水钻井液体系在东海地区的研究与应用
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摘要
东海地区地层复杂,煤层发育,井壁易失稳,且储层保护难度大。低自由水钻井液通过引入自由水络合剂和防水锁剂,降低钻井液中自由水含量,更好的实现井壁稳定和储层保护。改进型低自由水钻井液体系是在常规低自由水钻井液体系中引入深部抑制剂HPI、温压成膜剂HCM,有效封堵煤层,防止泥页岩水化,加固井壁。改进型低自由水钻井液已在东海地区成功应用,取得了良好的应用效果。
The east China sea has complex strata, developed coal seams, unstable borehole walls, and difficult reservoir protection. By introducing free water complexing agent and waterproof lock agent, the low-free-water drilling fluid reduce the free water content, realize the borehole wall stability and reservoir protection. The improved low-free-water drilling fluid system introduces the deep inhibitor HPI and the warm-pressure film forming agent HCM into the conventional low-free-water drilling fluid system to effectively block the coal seam,prevent the hydration of mud shale and strengthen the borehole wall. The improved low-free-water drilling fluid has been successfully applied in the east China sea area with good application results.
The east China sea has complex strata, developed coal seams, unstable borehole walls, and difficult reservoir protection. By introducing free water complexing agent and waterproof lock agent, the low-free-water drilling fluid reduce the free water content, realize the borehole wall stability and reservoir protection. The improved low-free-water drilling fluid system introduces the deep inhibitor HPI and the warm-pressure film forming agent HCM into the conventional low-free-water drilling fluid system to effectively block the coal seam,prevent the hydration of mud shale and strengthen the borehole wall. The improved low-free-water drilling fluid has been successfully applied in the east China sea area with good application results.
引文
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[3]徐小峰,冯京海,等.低自由水钻井液研究及在南堡油田应用[J].钻采工艺,2011,34(2):89-95.
[4]李艳飞,刘春苗,葛俊瑞,和鹏飞,袁则名.复配防腐油管高温高压气密性检测试验[J].石油化工应用,2018,37(7):16-19.
[5]鄢捷年.钻井液工艺学[M].北京:中国石油大学出版社,2001.
[6]袁则名,和鹏飞.复杂断块油田钻井废弃物回注方案优选与工程实践[J].海洋工程装备与技术,2017,4(1):7-13.
[7]张海山.东海地区低孔低渗储层低自由水钻井液体系研究与应用[J].中国海上油气,2013,25(2):71-73.
[8]严维锋,张海山,和鹏飞,袁则名,付顺龙,陈波.低黏高切油基钻井液在东海大位移井的应用[J].石油化工应用,2018,37(4):19-23.
[9]朱宽亮,等.低自由水钻井液体系的研究与应用[J].钻采工艺,2010,32(1):34-39.
[10]袁则名,和鹏飞,丁胜,边杰,马志忠.渤海35油田非均质储层钻井应对技术[J].探矿工程(岩土钻掘工程),2017,44(11):42-45.