大庆油田杏七区二次开发数值模拟
发布时间:2018-09-11 21:05
【摘要】:杏七区区块水驱包括基础井网、一次加密井网和二次加密井网三套井网,各套水驱井网含水均在91%以上。需要开展区块层系井网细化方法研究。减少井网内的层间干扰,提高各类油层的动用程度。区块共细分九十八个单层,对PⅠ1~3主力油层进行了沉积单元的划分,共有九个,非主力油层划分沉积单元有八十九个。由内前缘相水下分流平原沉积形成的产物包括PⅠ1_1、PⅠ1_2和PⅠ2_1~1单元,PⅠ2_1~2、PⅠ3_1、PⅠ2_2单元为三角洲下分流平原的沉积产物。PⅠ3_2、PⅠ3_3为三角洲上分流平原的沉积产物。杏七区主力油层平均砂岩厚度18.51m,有效厚度11.29m。区块非主力油层由大型河流——三角洲前缘沉积体系沉积形成,以稳定分布的前缘席状砂及表外储层沉积为主,整体发育较差。应用Petrel软件建立了萨葡高油层组细分小层地质模型,纵向网格细化至0.2m;利用Eclipse软件对Petrel软件的建模成果进行物性整合产生建立地质模型所需的数据,并制作网格几何模型和属性模型用于进行杏七区数值模拟研究。根据区块油层发育特点以及井网部署方式,杏七区一类油层发育较好,可以分两套层系进行开采;而对于发育不好的三类油层发育,整个薄差储层没有潜力进行独自三次加密调整,井网进行三次加密调整的前提是要分析对其余井网的影响。
[Abstract]:Water flooding in Xing7 block includes three sets of well pattern: basic well pattern, primary infill well pattern and secondary infill well pattern. The water cut of each set of water drive well pattern is above 91%. It is necessary to carry out research on the refinement method of block stratified well pattern. Reduce the interlayer interference in the well pattern and improve the production degree of all kinds of reservoirs. The block is divided into 98 monolayers, and the main oil layers of P 鈪,
本文编号:2237836
[Abstract]:Water flooding in Xing7 block includes three sets of well pattern: basic well pattern, primary infill well pattern and secondary infill well pattern. The water cut of each set of water drive well pattern is above 91%. It is necessary to carry out research on the refinement method of block stratified well pattern. Reduce the interlayer interference in the well pattern and improve the production degree of all kinds of reservoirs. The block is divided into 98 monolayers, and the main oil layers of P 鈪,
本文编号:2237836
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