江汉油区低渗透裂缝性油藏压裂工艺技术研究

Study on hydrofracturing technology for low permeability fractured reservoirs in Jianghan Oil Region

裂缝性油藏分为张性天然裂缝油藏、闭合裂缝油藏、复杂裂缝油藏,由于裂缝的发育程度、裂缝产状、裂缝力学性质、裂缝充填性的不同,在压裂施工中所采取的工艺手段也不相同。经过对江汉油区新沟嘴组低渗透裂缝性油藏的两次压裂施工,为江汉油区提供低渗透裂缝性油藏压裂增产实践经验。

Fractured oil reservoirs are divided into open natural fractured reservoir,closure fracture reservoir and complexity fracture reservoir. Because of the differences of growth degree,fracture occurrenve,mechanical porperty and infill characteristics of the fracture,the hydrofracturing techniques in the field operation may be different. Through twice hydrofracturing application in Xingouzui Formation low permeability fractured reservoir,it has provided some practical experiences for increasing oil production through hydrofracturing in low permeability fractured reservoirs of Jianghan Oil Region.