龙大清， 樊相生， 王昆， 范建国， 罗人文（中石化中原石油工程有限公司西南钻井分公司，成都637001）

龙大清等.应用于中国页岩气水平井的高性能水基钻井液[J].钻井液与完井液，2016，33（1）：17-21.



应用于中国页岩气水平井的高性能水基钻井液

龙大清， 樊相生， 王昆， 范建国， 罗人文
（中石化中原石油工程有限公司西南钻井分公司，成都637001）

龙大清等.应用于中国页岩气水平井的高性能水基钻井液[J].钻井液与完井液，2016，33（1）：17-21.

摘要目前中国页岩气水平井定向段及水平段钻井均使用油基钻井液，但油基岩屑处理费用昂贵，急需开发和应用一种具有环境保护特性的高性能水基钻井液体系。介绍了2种高性能水基钻井液体系的室内实验和现场试验效果。在长宁H9-4井水平段、长宁H9-3和长宁H9-5井定向至完井段试验了GOF高性能水基钻井液体系，该体系采用的是聚合物封堵抑制方案，完全采用水基润滑方式；在昭通区块YS108H4-2井水平段试验了高润强抑制性水基钻井液体系，该体系采用的是有机、无机盐复合防膨方案以及润滑剂与柴油复合润滑方式。现场应用表明，定向段机械钻速提高50%～75%，水平段机械钻速提高75%～100%。通过实验数据及现场使用情况，对比分析了2种体系的优劣，找出了他们各自存在的问题，并提出了改进的思路，为高性能水基钻井液的进一步完善提供一些经验。

关键词页岩气水平井；高性能水基钻井液；井眼稳定；润滑性；流变性；抗污染；环境保护

High Performance Water Base Drilling Fluid for Shale Gas Drilling

LONG Daqing, FAN Xiangsheng, WANG Kun, FAN Jianguo, LUO Renwen
(Southwest Drilling company of Zhongyuan Petroleum Engineering Co.Ltd Sinopec, Chengdu Sichuan, 637001,China)

Abstract A high performance water base drilling fluid is in urgent need to replace the oil base muds currently used in shale gas drilling in both the directional section and the horizontal section. This paper discusses the field application and laboratory study of two high performance water base drilling fluids. One of the high performance drilling fluids, GOF, has been used in the horizontal section of the well Changning H9-4, the directional and horizontal sections of the well Changning H9-3, and the well Changning H9-5. Another high performance drilling fluid is a highly inhibitive water base fluid of high lubricity, and has been used in the horizontal well YS108H4 in the block Zhaotong. This fluid utilizes organic and inorganic salts as the shale inhibitors and lubricant and diesel oil to render the fluid lubricity. In filed application, the ROP of the directional section was increased by 50%-75%, and that of horizontal section increased by 75%-100%. Advantages and disadvantages of the two fluids are discussed in the paper, based on laboratory experimental data and field application information. Ideas to improve the performance of the fluids are presented for the preparation of better high performance water base drilling fluids.

Key words Shale gas horizontal well; High performance water base drilling fluid; Bore hole collapse prevention; Lubrication;Rheology; Anti-contamination; Environment protection

中国目前进入开发的3大页岩气区块——威远、长宁-昭通、涪陵页岩气示范区的定向段及水平段均采用油基钻井液。……