第34卷第2期 2017年3月
钻井液与
究
井液
DRILLINGFLUID&COMPLETIONFLUID
doi:10.3969/j.issn.1001-5620.2017.02.002
川滇页岩气水平井水基钻井液技术
孙金声2
刘教平「，：
（1.中国石油勘探开发研究院，北京100083；2.中国石油集团钻井工程技术研究院，北京102206）
刘款平，
要
川滇页当气水平井水基钻井液技术[].钻井液与完井液，2017，34（2】：9-14
LIU Jingping, SUN Jinsheng.Water
Drilling Flald & Conaplerion
摘要
耕究
新型水基钻井液基本性能
电舞步基钻并市
有较强的封诺
关链词
中图分类号：
1.23%
57oNaC
2017
：水基钻井液
TE254.3
Vol. 34 No.2 Mar.2017
g fluid technology for horizontal shale gas drilling in Sichuan and Yunnan[J],
dnng
:9-14.
多
20
抑制性：封塔
：成镇区块
文献标识码：
化近青钾盐为核心处理剂
封诺
抗污染等实验，研究了
五峰组页水化腰服与分鼓刘页常水化感胀分敲性能与油
无压强降假
对页岩裂缝具
有良好的稳定并壁效果
1001-5620（2017）02-0009-06
文章编号：
Water Base Drilling Fluid Technology for Horizontal Shale Gas Drilling in Sichuan and Yunnan
LIU Jingping', SUN Jinsheng
(1. PetroChina Research Institution of Petroleum Exploration and Development, Beijing 100083;
2. CNPC Drilling Research Institute, Beijing 102206)
Abstract Borehole wall instability has been a problem frequently encountered in horizontal shale gas drilling with water base drilling fluids. A new type of water base drilling fluid has been developed for use in shale gas drilling in Sichuan and Yunnan provinces. Higher alcohols and potassium salt of sulfonated asphalt were the main additives used in formulating the drilling fluid. The basic performances of the new drilling fluid were studied through laboratory experiments such as swelling test, hot rolling test, mechanical characteristics analysis, plugging test and contamination test. It was shown that the rates of swelling of the Longmaxi formation in Yunnan, Longmaxi formation and Wufeng formation in Sichuan were reduced to 1.23%, 0.95% and 0.98%, respectively, and the rates of shale cuttings recovery were 98.94%, 99.13% and 99.05%, respectively, indicating that the new drilling fluid had strong inhibitive capacity similar to that of oil base drilling fluids in inhibiting the shales drilled. Compared with conventional water base drilling fluids, the decreasing amplitude of the compressive strength of shales in contact with water base drilling fluids was greatly reduced. The new drilling fluid can plug shale fractures efficiently. Other advantages of the new drilling fluid included salt tolerance (5% NaCI), bentonite contamination tolerance (5%), drilled cutting contamination (20%)
Key words Shale gas well; Water base drilling fluid; Surface hydration; Inhibitive capacity; Plugging; Sichuan and Yunnan
油基/合成基钻井液由于自身良好的抑制性，在页岩气长水平井钻井过程中具有良好的稳定井壁
效果，一直是页岩气水平井的首选钻井液，
但近年
来基于环保法规和经济性的要求，其强污染和高成
基金项目：中国石油集团重大专项“浙江油田昭通示范区页岩气钻采工程技术现场试验”（2014F470205）资助。
第一作者简介：刘敬平，在读博士研究生，1985年生，现在从事钻并液技术研究工作。电话15600563498；E-mail： liujingping20@126.com。
通讯作者：孙金产，E-mail：sunjinsheng@petrochina.com.cn。
万方数据