摘要
传统物质平衡方法应用中,认为油藏中地层压力降处处相同.但实际上,由于低渗透油藏中不同区域的启动压力梯度不同,因而压力降差异较大.提出了用分区物质平衡方法确定低渗透油藏的弹性驱及溶解气驱采收率.介绍了该方法的基本原理、具体实现过程和矿场应用实例.算例结果表明:分区物质平衡方法的计算结果更加符合低渗透油藏的实际生产特征.
In traditional material balance method,the pressure drop at any point in oil reservoir is regarded as the same.Actually,there is different pressure drop because of different threshold pressure gradient in different areas in low permeability reservoir.It is proposed that the recovery factor of elastic drive and dissolved gas drive is determined using regional material balance method.The principle,implementation and application case of this method are presented.The application result of the case shows that the recovery factor obtained using the regional material balance method is more accord with the practical production behavior of low permeability reservoir and the traditional material balance.
出处
《西安石油大学学报（自然科学版）》
CAS
北大核心
2010年第6期42-46,共5页
Journal of Xi’an Shiyou University（Natural Science Edition）
基金
中国石油化工股份有限公司科技攻关项目"低渗透砂岩油藏开发研究"(编号:P01032)
关键词
弹性驱
溶解气驱
低渗透油藏
分区物质平衡方法
low permeability reservoir
elastic drive
dissolved gas drive
pressure drop
regional material balance method
