Experimental Study on Temporary Fracture Plugging and Diverting Fracturing of Carbonate Reservoirs

LI Chunyue; FANG Haoqing; MOU Jianye; HUANG Yanfei; HU Wenting

doi:10.11911/syztjs.2020018

Volume 48 Issue 2

Apr. 2020

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Petroleum Drilling Techniques > 2020 > 48(2): 88-92. > DOI: 10.11911/syztjs.2020018

LI Chunyue, FANG Haoqing, MOU Jianye, HUANG Yanfei, HU Wenting. Experimental Study on Temporary Fracture Plugging and Diverting Fracturing of Carbonate Reservoirs[J]. Petroleum Drilling Techniques, 2020, 48(2): 88-92. DOI: 10.11911/syztjs.2020018

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Experimental Study on Temporary Fracture Plugging and Diverting Fracturing of Carbonate Reservoirs

1.
Research Institute of Petroleum Engineering, Sinopec Northwest Oilfield Company, Urumqi, Xinjiang, 830011, China
2.
College of Petroleum Engineering, China University of Petroleum (Beijing), Beijing, 102249, China

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Received Date: June 02, 2019
Revised Date: December 13, 2019
Available Online: January 09, 2020

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Abstract

Abstract

Carbonate reservoirs in Shunbei Oil and Gas Field are characterized by strong heterogeneity and poor connectivity.Although temporary fracture plugging and diverting fracturing can improve fracture complexity and reservoir development, fracture initiation and propagation law in such reservoirs are still not fully understood under the condition of temporary plugging. Therefore, the experimental study on temporary fracture plugging and diverting fracturing of carbonate reservoirs was carried out using the improved true triaxial fracturing experimental system. Fracturing fluid without and with temporary plugging agent were injected in sequence. The change of pressure before and after the injection of temporary plugging agent and the fracture morphology after temporary plugging and diverting fracturing were analyzed, based on which the law of fracture temporary fracture plugging and diverting was clarified. The research showed that temporary plugging can increase the complexity of fracture, and to achieve temporary plugging and diverting fracturing, natural fractures or beddings should be developed in rock so that the plugging agent could enter the fracture and achieve plugging, and so as to realize new fractures opening or diverting with increasing pressure. The research results of the law of temporary plugging and diverting in carbonate fractures would provide a theoretical basis for fracturing of carbonate reservoirs in Shunbei Oil and Gas Field.
- carbonate reservoir,
- temporary fracture plugging,
- diverting fracturing,
- diverting law,
- diverting condition,
- triaxial fracturing experiment

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References

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Experimental Study on Temporary Fracture Plugging and Diverting Fracturing of Carbonate Reservoirs

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