Volume 37 Issue 4
Aug.  2020
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CAO Chengzhang, BU Yuhuan, TIAN Leiju, HAN Laiju. Selection of Curable Resin Based Cementing Material and the Curing Agent thereof[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(4): 498-506. doi: 10.3969/j.issn.1001-5620.2020.04.016
Citation: CAO Chengzhang, BU Yuhuan, TIAN Leiju, HAN Laiju. Selection of Curable Resin Based Cementing Material and the Curing Agent thereof[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(4): 498-506. doi: 10.3969/j.issn.1001-5620.2020.04.016

Selection of Curable Resin Based Cementing Material and the Curing Agent thereof

doi: 10.3969/j.issn.1001-5620.2020.04.016
  • Received Date: 2020-03-13
  • Publish Date: 2020-08-28
  • Cement as the main component of well cementing material, has the disadvantages of high brittleness and poor corrosion resistance. Oil and gas wells cemented with cement slurry are susceptible to brittle failure which in turn results in pressurizing in annulus and channeling across layers. Curable resin based cementing materials have many advantages over cement, such as high strength, low elastic modulus and strong elasticity, hence can be used in well cementing. Several curable resins have been analyzed and epoxy resin was finally chosen as the cementing material. A curing agent was also selected for use with epoxy resin. In evaluating the thickening process of the resin based cementing material, a viscosity-time curve was used to replace the old thickening curve. Laboratory experiments were conducted to optimize the curing fluid. It was found that HSPT, a curing agent, remained in working status for a longer time than other curing agents. The reaction product of HSPT had compressive strength of greater than 70 MPa, elastic modulus of less than 3 GPa, and low gas permeability, suitable for well cementing at 50 - 90 ℃. The reaction product of another polyetheramine curing agent had compressive strength of greater than 75 MPa and elastic modulus of less than 2 GPa, which is suitable for well cementing at 30 - 50 ℃.

     

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