薄层底水油藏分注合采技术界限研究

The research of sparate injection commingled production technical finitude in exploitating thin-bedded bottom-water oil reservoir

熊钰 鲜波 杨志国 裴素安 史燕玲

Xiong Yu Xian Bo Yang Zhiguo Pei Suan Shi Yanling

西南石油大学, 四川成都 610500; 新疆油田陆梁油田作业区, 新疆克拉玛依 834000; 冀东油田分公司研究院, 河北唐山 548000

Southwest Petroleum University, Chengdu 610500; Xinjiang Oilfield, Kelamayi 834000; Institute of SINOPEC Jidong Oilfield Company, Tangshan 548000

在薄层底水油藏开发过程中,油井在纵向上大都穿越多个油层,而在油藏合采开发方案决策中,多层油藏合采层位组合主要基于开发油井时的层系划分原则,并没有对多层油藏开采中多层合采的划分方法进行系统、定量的研究,而研究多层油藏合采和分采的技术界限对划分薄层底水油藏的开发层系和确定单井采油方式具有明显的工程意义。通过建立层间无窜流双层模型,利用数值模拟方法,从层间压力、储层物性方面采用单因素和正交因素分析方法,获得了薄层底水油藏分注合采技术界限和界限方程,并通过实例应用说明了图版解释方法。研究表明,该方法可为薄层底水油藏分注合采层位组合提供正确的理论方法。

In developing thin-layered bottom-water drive oil reservoir, oil wells penetrate many oil layers vertically. In decision-making of separate injection commingled production, grouping of commingled production of multiple layers is based on formation classification without systemic and measurable study. So re-search into the adaptability of separate injection commingled production is important. Setting up dual layers model without crossflow, this paper applies numerical value simulation method, single parameter and posi-tive crossed parameter analytical method to obtain technical finitude equation about choking back bottom-water of thin-bedded bottom-water oil reservoir and the correctness of plate analytical method through examples is proved. It is also proved that the method can offer an academic tackle to choking back bottom-wat-er in exploiting thin-bedded bottom-water oil reservoir and improve the effect of separate injection commingled production technology.

油气藏地质及开发工程国家重点实验室基金项目资助(基金编号:PLN0118);西南石油大学第五批研究生创新基金项目资助(基金编号:CXJ27001)