Volume 38 Issue 2
Aug.  2021
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JI Weijun, YANG Yong, YAN Yongsheng, TANG Guowang. Gel Plugging System for Oil-Based Drilling Fluid and Its Application[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(2): 196-200. doi: 10.3969/j.issn.1001-5620.2021.02.011
Citation: JI Weijun, YANG Yong, YAN Yongsheng, TANG Guowang. Gel Plugging System for Oil-Based Drilling Fluid and Its Application[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(2): 196-200. doi: 10.3969/j.issn.1001-5620.2021.02.011

Gel Plugging System for Oil-Based Drilling Fluid and Its Application

doi: 10.3969/j.issn.1001-5620.2021.02.011
  • Received Date: 2021-11-12
  • Based on the research and analysis of modern shale gas drilling, and comprehensively comparing the shortage of oilbased drilling fluid plugging technology at home and abroad, a gel plugging system for oil-based drilling fluid is studied. The related components of the gel system were studied by IR, X-ray diffraction and scanning electron microscopy. The results showed that the binding agent was successfully synthesized. The high temperature and pressure curing kettle was used for curing. The compressive strength of the gel plugging system could reach 3.2 MPa by using the pressure tester. The laboratory tests showed that the rheological properties of the gel were good, the density was adjustable (0.77-1.3 g/cm3), the gel strength was adjustable (1.7-3.2 MPa), and the gel system and the oil-based drilling fluid system had good compatibility, adding 2 to the gel plugging system. The compressive strength of 0 oil-based drilling fluid can also reach 1.8MPa. Field application shows that the compressive strength of gel plugging system for oil-based drilling fluid can reach 6.8 MPa, which perfectly displays the excellent plugging effect of gel plugging system and has broad application prospects.

     

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