Research progress in temperature stability of polymer-enhanced foam
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Petrochina Innovation Foundation (2017D-5007-0201); Science and Technology Project of Education Department of Liaoning Province (L2017LFW012); Department of Science & Technology of Liaoning Province (20170520344)

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    Abstract:

    Due to its special flocculent and reticular structure, the polymer has viscosity-increasing, reduces the loss of liquid in the foam, delays the thinning of the liquid film, and reduces the solubility of the gas in the liquid film. In the process of oil and gas field development, although the bubble stabilizing effect of foam stabilizer has been recognized early, few comparative studies have been conducted on its temperature resistance. However, the influence of temperature conditions on the stabilizer is different in practical applications. With the change from shallow reservoir to high temperature reservoir, fracture type and low permeability reservoir. It is often faced with the characteristics of poor stability of conventional foam fluid and insufficient resistance to high temperature. Higher requirements have been put forward for the properties of foam stabilizers, especially for their temperature resistance. Therefore, the improvement of its temperature resistance has always been a difficulty in research. In this paper, the temperature resistance of foam stabilizer is analyzed according to the three main fields of foam stabilizer: foam fracturing fluid, foam flooding fluid and foam well washing fluid, and some suggestions for future research of polymer-enhanced foam are put forward.

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History
  • Received:September 23,2019
  • Revised:January 03,2020
  • Adopted:January 06,2020
  • Online: March 23,2020
  • Published:
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