Lithologic Reservoirs ›› 2019, Vol. 31 ›› Issue (6): 127-134.doi: 10.12108/yxyqc.20190614

• OIL AND GAS FIELD DEVELOPMENT • Previous Articles     Next Articles

Application of flow potential control in water control and oil stabilization of fractured-vuggy carbonate reservoirs

REN Wenbo   

  1. No.3 Oil Production Plant, Sinopec Northwest Oilfield Company, Luntai 841604, Xinjiang, China
  • Received:2019-04-22 Revised:2019-06-29 Online:2019-11-21 Published:2019-09-28

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Abstract: In order to solve the production decline caused by water breakthrough and water cut rise in fractured-vuggy reservoirs,based on the existing conventional flow potential characterization of sandstone reservoir and the geologic characteristics of fractured-vuggy reservoirs,a corresponding flow potential characterization method was proposed. Through calculation and simulation,it is clear that the flow potential of fractured-vuggy carbonate reservoir is mainly composed of potential energy and pressure energy. According to the fact that the flow potential is the decisive factor to control the flow of underground fluid,the technical strategy of water control was put forward to control the flow potential by changing the production pressure difference so as to change the flow direction of underground fluid,and the key technologies of flow potential control,such as well selection and adjustment design,which are related to water invasion direction and aquifer size,were formed. Finally,through case analysis,it is further proved that flow potential regulation is an effective means to control water and stabilize oil in fractured-vuggy carbonate reservoirs. Up to now,13 well groups have been implemented in Tahe Oilfield,11 effective wells have been implemented,and the cumulative oil increase is nearly 100,000 tons.

Key words: flow potential control, production pressure, fractured-vuggy carbonate reservoirs, water control

CLC Number: 

  • TE344
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