低渗油藏井网适应性研究——以张天渠油田长2油藏为例

Adaptability Research of Well Pattern in Low Permeability Reservoir——Taken Chang-2 Reservoir in the Zhangtianqu Oilfield as Example

欧阳明华 谢丛姣

OUYANG Ming-hua XIE Cong-jiao

中国地质大学 研究生院 湖北 武汉 430074; 中国地质大学 资源学院, 湖北 武汉 430074

Graduate faculty of the China University of Geosciences, Wuhan 430074, China; Resource faculty of the China University of Geosciences, Wuhan 430074, China

文章以张天渠油田长2油藏为例,讨论了低渗油藏井网适应性研究的有关问题。通过公式计算,得出了长2油藏合理的井网密度及其相应井距和最优注采井数比;运用油藏数值模拟分析了当前井网方式存在的问题。在此基础上,总结了低渗油藏井网适应性研究的一般方法,并指出了张天渠油田目前井网的主要不适应性因素。该项研究对其它低渗油田井网适应性研究有一定的借鉴意义。

Taken Chang-2 reservoir in the Zhangtianqu oilfield as an example,it discusses the problems about the adaptability research of well pattern in low permeability reservoir. Calculated the range of reasonable well spacing density as well as relative interspacing and the reasonable injection-production ratio;By the method of numerical reservoir simulation,analyzed the problems existed in current well pattern arrangement in the Chang-2 reservoir. On the basis,summarized the common method of well pattern adaptability research of low permeability reservoir,pointed out the major non-adaptability factors in the Chang-2 reservoir in current. It has some reference value to the other low permeability reservoirs.