Study on Adaptability of Calcium Chloride- Alkyl Polyglucoside Drilling Fluids to Shale Gas Horizontal Drilling
-
摘要: 为解决常规水基钻井液开发页岩地层无法完成的井壁稳定和润滑防卡等技术难题,对加有高浓度CaCl2的烷基糖苷钻井液进行了研究。氯化钙-烷基糖苷(APG)钻井液具有较低的水活度(0.40~0.76),与页岩气水平段钻屑活度范围(0.35~0.70)较为一致,可较好地与地层达到渗透平衡;钻屑在CaCl2-APG钻井液中的一次和二次回收率均超过90%,与油基钻井液相当,高于常规水基钻井液;焦石坝区块露头岩心在CaCl2-APG钻井液中浸泡后状态完好,抗压强度降低较少,与在油基钻井液中的浸泡现象相当。密度为1.20~2.00 g/cm3的CaCl2-APG钻井液润滑性均与油基钻井液极压润滑系数相当;在130℃持续老化72 h性能稳定,抗温稳定性好;抗钻屑、水侵和原油污染能力分别达15%、10%和10%。室内评价结果表明,该钻井液与焦石坝等页岩气水平井适应性较好。Abstract: Calcium chloride(CaCl2)-Alkyl polyglucoside(APG) drilling fluids have low water activities compatible with the water activities in shale formations, and this makes it easy to reach osmotic equilibrium between the drilling fluids and the shale formations, In hot rolling tests, the first and secondary shale cuttings recoveries of the CaCl2-APG drilling fluids are higher than 90%, almost the same as that of oil base muds.Shale crops from Block Jiaoshiba have their strengths slightly reduced after soaking in the CaCl2-APG drilling fluids.CaCl2-APG drilling fluids of 1.20-2.00 g/cm3 have extreme friction coefficient the same as that of oil base muds.CaCl2-APG drilling fluids, afteragingfor 72 hours at 130℃, still retain their properties.When contaminated with drill cuttings at concentrations less than 15%, the properties of the drilling fluids still keep stable.Laboratory study shows that the CaCl2-APG drilling fluids are suitable for use in shale gas horizontal drilling in Jiaoshiba.
-
Key words:
- Calcium chloride /
- Alkyl polyglucoside /
- Drilling fluid /
- Shale gas /
- Borehole stabilization
-
赵虎,司西强,王忠瑾,等.氯化钙-烷基糖苷钻井液室内研究[J]. 钻井液与完井液,2014,31(5):1-5. Zhao Hu, Si Xiqiang, Wang Zhongjin, et al. Laboratory study on calcium chloride-APG drilling fluid[J].Drilling Fluid & Completion Fluid,2014,31(5):1-5. 付国都, 董海军, 牛广玉,等.双保仿油基改性MEG的研究与应用[J]. 钻井液与完井液, 2005, 22(S1):8-10. Fu Guodu, Dong Haijun, Niu Guangyu, et al. Performance evaluation and application of modified MEG drilling fluid[J]. Drilling Fluid & Completion Fluid, 2005, 22(S1):8-10. 赵虎,甄剑武,王中华,等.烷基糖苷无土相钻井液在卫383-FP1井的应用[J].石油化工应用,2012,31(8):6-9. Zhao Hu, Zhen Jianwu, Wang Zhonghua, et al. Application of alkyl polyglucoside clay-free drilling fluid in well Wei 383-FP1[J]. Petrochemical Industry Application, 2012, 31(8):6-9. 邸伟娜, 闫娜, 叶海超. 国外页岩气钻井液技术新进展[J]. 钻井液与完井液, 2014, 31(6):76-81. Di Weina, Yan Na, Ye Haichao. Overseas new progresses in nano drilling fluid technology for shale drilling[J]. Drilling Fluid & Completion Fluid, 2014, 31(6):76-81. 何振奎. 页岩水平井斜井段强抑制强封堵水基钻井液技术[J]. 钻井液与完井液, 2013(2):43-46. He Zhenkui.[J]. Strong inhibition and sealing water-based drilling fluid technology for deviated section of shale horizontal[J]. Drilling Fluid & Completion Fluid, 2013(2):43-46. 司西强, 王中华, 魏军, 等. 钻井液用阳离子甲基葡萄糖苷[J]. 钻井液与完井液, 2012, 29(2):21-23. Si Xiqiang, Wang Zhonghua, Wei Jun, et al. Study on cation methyl glucoside used in drilling fluid[J]. Drilling Fluid & Completion Fluid, 2012, 29(2):21-23. William D, Ken D, Nels H, et al. New water-based mud balances high-performance drilling and environmental compliance[R]. SPE/IADC 92367, 2005. Zhang J,Chenvert M E,Al-Bazali T,et al. A new gravimetric-swelling test for evaluating water and ion uptake in shales[R]. SPE 89831, 2004. Eric V O, Hale A H, Mody F K, et al. Transport in shales and the design of improve water-based shale drilling fluids[R]. SPE 28309, 1996. Talal M, Kuwait U, Jianguo Z,et al. Factor controlling the membrane efficiency of shale when interacting with waterbased and oil-based muds[R]. SPE 100735, 2006. 马诚,谢俊,甄剑武,等. 抗高浓度氯化钙水溶性聚合物增黏剂的研制[J]. 钻井液与完井液,2014,31(4):11-14.. Ma Cheng, Xie Jun, Zhen Jianwu, et al. Development of a water soluble polymer viscosifier for use in high calcium environment[J].Drilling Fluid & Completion Fluid, 2014, 31(4):11-14. 苏雪霞, 孙举, 郑志军, 等. 氯化钙弱凝胶无黏土相钻井液室内研究[J]. 钻井液与完井液, 2014,31(3):10-13. Su Xuexia, Sun Ju, Zhen Zhijun, et al. Study on weak gel clay-free CaCl2 drilling fluid[J]. Drilling Fluid & Completion Fluid, 2014,31(3):10-13. 廖学华, 于盟, 张振华, 等.渤海湾月东区块KCl聚合醇钻井液技术[J]. 钻井液与完井液, 2014, 31(2):89-91. Liao Xuehua, Yu Meng, Zhang Zhenhua, et al.KCl poly-glycol drilling fluid technology for block Hainan-Yuedong[J]. Drilling Fluid & Completion Fluid,2014,31(2):89-91.
点击查看大图
计量
- 文章访问数: 736
- HTML全文浏览量: 156
- PDF下载量: 189
- 被引次数: 0