牛圈湖东区注水井欠注原因分析

Cause Analysis on Underpressure Injection in Water Injection Wells in East of Niujuanhu

牛圈湖油田西山窑油藏属"低压、低孔、低渗"的三低油气藏,开采难度大,开采前期都是采用压裂投产,构造缝和后期人工裂缝分布广泛,给注水开发带来了很大的影响。牛圈湖东区是注水开发的新区,目前欠注现象严重,为了确定合理的注水井欠注治理方法,下面笔者将对牛圈湖东区注水井欠注原因作详细分析,并提出下步治理建议。

J2x reservoir in Niujuanhu oilfield is the hydrocarbon reservoir with low pressure, low porosity and low permeability. Its exploitation is difficult. Fracturing is adopted in early stage of production, natural fracture and post -artificial - crack are widely distributed, it causes great trouble for water injection development. The east of Niu Juanhu is a new area of water flooding. At present underpressure injection is serious. In order to determine reasonable solutions to underpressure injection of water injection wells, the causes of underpressure injection of water injection wells in east of Niuquanhu are well - analyzed and next treatment recommendations are given in this paper.