Volume 37 Issue 3
Jun.  2020
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2020  >  37(3): 332-336
YU Ling, LIU Weihong, XU Mingbiao, SONG Jianjian, ZHOU Wen, DENG Yahui. A Magnesium Oxychloride Cement Slurry for Controlling Loss of Oil Base Drilling Fluids[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(3): 332-336. doi: 10.3969/j.issn.1001-5620.2020.03.011
Citation: YU Ling, LIU Weihong, XU Mingbiao, SONG Jianjian, ZHOU Wen, DENG Yahui. A Magnesium Oxychloride Cement Slurry for Controlling Loss of Oil Base Drilling Fluids[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(3): 332-336. doi: 10.3969/j.issn.1001-5620.2020.03.011
shu

A Magnesium Oxychloride Cement Slurry for Controlling Loss of Oil Base Drilling Fluids

doi: 10.3969/j.issn.1001-5620.2020.03.011

  • 1. Petroleum Engineering College, Yangtze University, Wuhan, Hubei 430100;

  • 2. Hubei Cooperative Innovation Center of Unconventional Oil and Gas, Yangtze University, Wuhan, Hubei 430100;

  • 3. Jingzhou Jiahua Technology Company Limited, Jingzhou, Hubei 434000

  • Received Date: 2020-02-16
  • Publish Date: 2020-06-28
    Abstract
  • Magnesium oxychloride cement has excellent mechanical and thermal performance and is widely used in industrial flooring, fire control, grind wheel making and wall insulation. Conventional cement has some disadvantages as well cementing material such as poor contamination resistance, poor acid solubility and inability to deal with severe mud losses. To resolve these problems, a magnesium oxychloride cement slurry was developed using DISP-S as dispersant, and DOT and Atmp compound as retarder. The set magnesium oxychloride cement has polycrystalline phase in it and the slurry is able to deal with severe loss of oil base mud. Laboratory experimental results showed that a magnesium oxychloride cement slurry of 1.76 g/cm3 has very good settling stability, zero free water, filtration rate of less than 40 mL, thickening time of 230 min at 60℃, and set cement with compressive strength of greater than 30 MPa in intermediate and low temperatures. The set cement, even mixed with some invading oil base mud, still maintains certain level of mechanical properties, and is able to dissolve completely in concentrated hydrochloric acid.

     

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