Volume 38 Issue 1
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LEI Zhengyong, XU Mingbiao, YOU Fuchang, GUO Yuanyao, ZHOU Wen. Low Friction Potassium Silicate Drilling Fluid System For Shale Gas Horizontal Wells[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(1): 62-67. doi: 10.3969/j.issn.1001-5620.2021.01.010
Citation: LEI Zhengyong, XU Mingbiao, YOU Fuchang, GUO Yuanyao, ZHOU Wen. Low Friction Potassium Silicate Drilling Fluid System For Shale Gas Horizontal Wells[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(1): 62-67. doi: 10.3969/j.issn.1001-5620.2021.01.010
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Low Friction Potassium Silicate Drilling Fluid System For Shale Gas Horizontal Wells

doi: 10.3969/j.issn.1001-5620.2021.01.010

  • 1. School of petroleum engineering, Yangtze University, Wuhan, Hubei 430100;

  • 2. Hubei Collaborative Innovation Center for unconventional oil and gas, Wuhan, Hubei 430100;

  • 3. Jingzhou Jiahua Technology Co., Ltd., Jingzhou, Hubei 434000

  • Received Date: 2020-09-27
    Available Online: 2021-08-16
    Abstract
  • At present, with the increasingly severe environmental protection pressure, it is more and more urgent for drilling fluid practitioners to develop a set of water-based drilling fluid system that can replace oil-based to solve a series of problems such as friction, wellbore stability and borehole cleaning in the process of shale gas horizontal drilling. In this study, a potent water-based lubricant with synergistic plugging ability was developed and introduced on the basis of potassium silicate drilling fluid’s features such strong inhibition, strong plugging and easy film-forming.Finally, the low friction potassium silicate drilling fluid was constructed through a series of screening and evaluation experiments. Its lubrication coefficient is about 0.08, and the weight of anti-wear weight reaches 10 kg, which is comparable to oil-based lubrication and anti-wear performance; at the same time, it has a low filtration rate （FLHTHP < 6 mL）; in addition, the system has strong inhibition and anti pollution ability, and its rheology is easy to control, which can fully meet the development needs of shale oil and gas reservoirs.

     

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