productivity analysis of volume fractured vertical well model in tight oil reservoirs
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2017
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Abstract
This paper presents a semianalytical model to simulate the productivity of a volume fractured vertical well in tight oil reservoirs. In the proposed model, the reservoir is a composite system which contains two regions. The inner region is described as formation with finite conductivity hydraulic fracture network and the flow in fracture is assumed to be linear, while the outer region is simulated by the classical Warren-Root model where radial flow is applied. The transient rate is calculated, and flow patterns and characteristic flowing periods caused by volume fractured vertical well are analyzed. Combining the calculated results with actual production data at the decline stage shows a good fitting performance. Finally, the effects of some sensitive parameters on the type curves are also analyzed extensively. The results demonstrate that the effect of fracture length is more obvious than that of fracture conductivity on improving production in tight oil reservoirs. When the length and conductivity of main fracture are constant, the contribution of stimulated reservoir volume (SRV) to the cumulative oil production is not obvious. When the SRV is constant, the length of fracture should also be increased so as to improve the fracture penetration and well production.
| Reference Key |
wang2017mathematicalproductivity
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|---|---|
| Authors | ;Jiahang Wang;Xiaodong Wang;Wenli Xu;Cheng Lu;Wenxiu Dong;Cong Zhang |
| Journal | journal of power sources |
| Year | 2017 |
| DOI |
10.1155/2017/9589321
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