Y151井区水平井缝网压裂参数优化研究

Fracture parameter optimization of network fracturing for horizontal well in wellblock Y151

低渗-超低渗透Y151井区采用缝网压裂水平井进行开发,但目前,针对缝网压裂水平井特征参数优化的研究很少,因此,文中使用Eclipse数值模拟软件,考虑等效导流能力和局部多重网格加密方法建立缝网压裂网络模型,同时利用"主裂缝+SRV区域渗透率"的小尺度缝网模拟方法,开展次缝、支缝与主缝之间的导流匹配研究,确定了Y151井区水平井缝网压裂的裂缝形态、井筒与裂缝延伸方向、水平段长度等参数。为Y151井区以及低渗-超低渗致密油藏缝网压裂水平井开发有着指导意义。

With the network fracturing horizontal well development of low permeability and ultra-low permeability Y151 wellblock. At present, the study of network fracturing parameters optimization is small for horizontal well. Therefore, in this paper, we use the Eclipse numerical simulation software, considering the equivalent flow conductivity and local grid refinement method to establish multiple fracture network model. And use the small scale network simulation method of ＂the main fracture ＋ the SRV area permeability＂ to research the flow conductivity matching between the main fracture and secondary cracks, and determined the characteristic parameters of the wellblock Y151. So that provide some references for the development of network fracturing technology for low permeability and ultra-low permeability reservior and wellblock Y151.