基于连续液面曲线的间歇采油工作制度优化研究  

Optimization of interval production working system based on continuous liquid level curve

作　　者：彭凯[1] 王昊[1] 齐京国 PENG Kai;WANG Hao;QI Jingguo(Nanpu Oilfield Operation Area of PetroChina Jidong Oilfield Company,Tangshan,Hebei 063200,China)

机构地区：[1]中国石油冀东油田公司南堡油田作业区,河北唐山063200

出　　处：《油气藏评价与开发》2023年第2期254-259,共6页Petroleum Reservoir Evaluation and Development

基　　金：国家科技重大专项“南堡凹陷油气富集规律与增储领域”(2016ZX05006-006)。

摘　　要：间歇采油是低产低效井挖潜的常用方式,在应用中大部分都是通过定性和效益因素确定工作制度,缺乏科学性。为精细化、定量化优化其工作制度,结合物质平衡、流入流出动态等理论,并综合考虑井斜、储层物性参数等因素,建立了间歇采油的开关井动液面耦合数学模型,并创新性地将模型计算结果与实测液面恢复曲线进行拟合,从而求取地层物性参数。在此基础上,通过枚举法将开关井动液面进行等分,并从井口产量、泵效、地层流入量等多方面进行优化评价,最终确定合理的工作制度。通过矿场应用验证表明:建立的耦合数学模型,将其数值迭代结果与实测液面恢复曲线进行拟合,能更科学确定间歇采油工作制度,确保油井处于高效协同供排关系。For low production and low efficiency wells,interval production is usually used to tap potential.However,most practices are based on qualitative and benefit factors to determine interval production parameters,which are lack of scientific accuracy.In order to optimize and study the interval production parameters more precisely and quantitatively,combining the theoretical basis of material balance,inflow and outflow dynamics and other parameters such as well deviation and reservoir physical properties are taken into account,the mathematical model of fluid level coupling in the switch well for interval oil production is established.The coupling model calculation results are innovatively matched with the measured dynamic level recovery curve to obtain the reservoir physical parameters.On the basis of the above,the dynamic liquid level during shut in and pumping is divided into equal parts by enumeration method,the reasonable working parameters are determined by optimizing and evaluating the wellhead production,pump efficiency and formation inflow.The field application verification shows that:fitting the numerical iteration results of the coupled mathematical model with the measured liquid level recovery curve,it can more scientifically determine the interval production parameters.At the same time,it also ensures that the oil wells are in an efficient and coordinated supply and discharge relationship.

关 键 词：耦合数学模型 泵效 间歇采油 工作制度 液面恢复曲线 

分 类 号：TE355[石油与天然气工程—油气田开发工程]