用边界元法计算任意形状混合边界的油藏压力  

Boundary element method for pressure calculation of arbitrary shape and mixed boundary reservoir

作　　者：张国良[1] 尹洪军[2] 刘振林[2] 

机构地区：[1]大庆油田有限责任公司第八采油厂,黑龙江大庆163513 [2]大庆石油学院石油工程学院,黑龙江大庆163318

出　　处：《水动力学研究与进展（A辑）》2006年第4期544-548,共5页Chinese Journal of Hydrodynamics

基　　金：黑龙江省教育厅科学技术研究项目(10531032)

摘　　要：建立了考虑源(汇)影响、任意形状、混合边界条件、含有不渗透区油藏稳定渗流的数学模型,采用边界元方法对其进行了求解,获得了油藏内的压力分布,绘制了相应的压力剖面图。通过对比压力剖面图和平均压力发现,由于油藏的封闭边界部分不能向生产井提供能量,致使地层能量被消耗较多,油藏平均压力降低;由于油藏内不渗透区的存在,能量在绕过其向生产井传播时要有部分能量损失,所以油藏的平均压力会降低。The mathematical model for steady-state flow in arbitrary shaped homogeneous reservoir with mixed boundary conditions is constructed, and solved with the Boundary Element Method （BEM）. The pressure distribution maps of the reservoir with arbitrary shape, mixed boundary conditions and impermeable barrier are drawn. By analyzing, it is found that the impermeable boundary does not supply energy to the producing well, so the reservoir pressure is depleted more and the average pressure decreased. As some pressure losses in transmitting around the impermeable barrier, it makes the average pressure lower.

关 键 词：边界元方法 稳定渗流 压力 任意形状 混合边界 

分 类 号：TE312[石油与天然气工程—油气田开发工程]