结合相对渗透率曲线的KHK产量劈分方法研究  

KHK Production Splitting Method Combined with Relative Permeability Curve

作　　者：龙明[1] 徐怀民[1] 陈玉琨[1] 张国威[2] 

机构地区：[1]中国石油大学(北京)地球科学学院,北京102249 [2]长江大学油气钻采工程湖北省重点实验室,湖北荆州434023

出　　处：《石油天然气学报》2012年第4期114-118,168,共5页Journal of Oil and Gas Technology

摘　　要：在油水两相平面径向流的基础上,考虑了不同含油饱和度下油和水的流动能力的不同,及不同层位的压差、粘度对该井产量劈分的影响,结合该井的相对渗透率曲线(简称"相渗曲线"),最终提出了KHK产量劈分公式。新公式不仅考虑了压差及粘度的影响,最重要的是结合了相渗曲线,根据不同含油饱和度下油水的渗流能力,用相渗曲线进一步对产量进行劈分,比传统KH产量劈分公式更加全面。通过数值模拟方法对产量劈分进行验证,其结果与数值模拟结果较为接近,且解决了用原KH公式劈分出现纯油层产水过多的状况。因此应用新公式进行产量劈分较为合理,其结果符合度较高,很好地解决了大井段、多层位薄互层砂岩油藏的产量劈分问题,具有较强的适用性。Base on the study of oil and water plane and radial flow,the KHK formula of production splitting was obtained,which applied relative permeability curve and considered the difference of oil and water flow capacity under the different oil saturations.The new formula of production splitting was improved better than the old,which considered the viscosity and pressure difference and applied relative permeability curve to split production,according to the difference of oil and water flow capacity under the different oil saturations.The new formula of production splitting is verified by the technique of numerical simulation,which solves the problem that the pure oil layer produces more water by the old KH formula of production splitting.The result of new formula has the great coincidence,which can solve the production splitting problem of the large holes and multilayered sandstone reservoirs.The new formula of production splitting has the extensive applicability.

关 键 词：KHK产量劈分方法 产量劈分 相渗曲线 数值模拟 

分 类 号：TE328[石油与天然气工程—油气田开发工程]