Research of Temperature-Responsive Subsurface Self-Generated Proppant

JI Cheng; ZHAO Bing; LI Jianbin; LUO Pandeng; FANG Haoqing

doi:10.11911/syztjs.2022078

Volume 50 Issue 4

Jul. 2022

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Petroleum Drilling Techniques > 2022 > 50(4): 45-51. > DOI: 10.11911/syztjs.2022078

JI Cheng, ZHAO Bing, LI Jianbin, et al. Research of temperature-responsive subsurface self-generated proppant [J]. Petroleum Drilling Techniques，2022, 50(4)：45-51. DOI: 10.11911/syztjs.2022078

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JI Cheng, ZHAO Bing, LI Jianbin, et al. Research of temperature-responsive subsurface self-generated proppant [J]. Petroleum Drilling Techniques，2022, 50(4)：45-51. DOI: 10.11911/syztjs.2022078

Citation:

JI Cheng, ZHAO Bing, LI Jianbin, et al. Research of temperature-responsive subsurface self-generated proppant [J]. Petroleum Drilling Techniques，2022, 50(4)：45-51. DOI: 10.11911/syztjs.2022078

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Research of Temperature-Responsive Subsurface Self-Generated Proppant

JI Cheng^{1, 2,},
ZHAO Bing^{1, 2},
LI Jianbin³,
LUO Pandeng^{1, 2},
FANG Haoqing^{1, 2}

1.
Sinopec Key Laboratory for Enhanced Oil Recovery in Fractured and Vuggy Reservoirs, Urumqi, Xinjiang, 832100, China
2.
Petroleum Engineering Technology Research Institute, Sinopec Northwest Oilfield Company, Urumqi, Xinjiang, 832100, China
3.
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University), Chengdu, Sichuan, 610500, China

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Received Date: January 12, 2022
Revised Date: June 29, 2022
Available Online: November 03, 2022

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Abstract

Abstract

A liquid proppant comprised of a phase-change liquid and a non-phase-change liquid was developed to effectively support the full fracture length and network in ultra-deep reservoirs. The developed proppant is liquid under the ground temperature, while it undergoes phase change under the high temperature in reservoirs and transforms into solid particles after a while to support fractures. In addition, it could maintain high fracture conductivity under high temperature and high closing pressures. The test results revealed that the liquid proppant could transform into solid particles of different sizes under different mixing speeds. Before the phase change, it was a viscous fluid, with low filtration loss and good compatibility. After the phase change, the subsurface self-generated proppant had a good pressure-bearing capacity, and the particle size and phase change time could be controlled. Under the closing pressure of 60 MPa, the combinations of proppants of different particle sizes could have an effective conductivity of 9.21 D·cm. The development of the temperature-responsive subsurface self-generated proppant can provide a new efficient stimulation method for oil and gas development in ultra-deep reservoirs.
- ultra-deep reservoir,
- liquid proppant,
- phase change,
- temperature-responsive,
- performance evaluation,
- conductivity

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References (29)

References

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Research of Temperature-Responsive Subsurface Self-Generated Proppant

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