第38卷第2期 2017年4月
文章编号：10013873(2017)02023307
新疆石油地质
XINJIANC PETROLEUM GEOLOGY DOI:10.7657/XJPG20170220
快速预测水驱油井分层动态指标的新方法
董驰"，宋考平」，石成方”，朱孟高”，崔晓娜"，刘柱”
（1.东北石油大学a.石油工程学院；b.提高油气采收率重点实验室，黑龙江大庆163318；
Vol. 38,No.2 Apr.2017
2.中国石油勘探开发研究院，北京100083;3.中国石化胜利油田分公司滨南采油厂，山东滨州256600）
要：中国水要老油田已进入高含水甚至特高含水开采期，平面矛盾和层间矛盾加剧，剩余油分市高度分散，经济摘
有效开采难度越来越大。为满足油快速、准确识别优势渗流通道和治理低效无效循环的需要，基于油藏数值模拟和水驱规律曲线方法，提出了种快速预测单并分层动态指标的方法。对大庆油用筛选出的10条天然岩心相对源透率凿线进行了研究，发现采出程度与水油比在半对数座标系中有很好的线性关系，相关系数均在0.99以上。以此
为基础进一步回归出了这一线性关系表达式中斜率和
成距与渗透率的关系，从再得到了不间渗透率下采出程度与含
对单井产液量进行劳分，
水率(或水相分流量)之间的关系式。
，与得到的关系式结合，建立了一种新的油并分层动态
指标预测模型，并提出了采用实际生产动态数据对产量的修正方法
与Eclipse数值模报软件计算进行了对比，两者
水题采收率计算结果最大误差为2.72%.对实际生产区块动态指标计算结果表明，方法简便易掌握，能够高效、准确
地对水驱油藏分层动态指标进行预测，解决了常用预测方法耗时长、计算复杂、受人为因素影响大等间题。关键词：水驱油田；多产层油藏；分层动态指标；水驱特征曲线；预测方法；参数国归
中图分类号：TE331
文献标识码：A
ANewMethod toFastForecast Layered ProductionIndexesin WaterfloodingWells
DONG Chi',SONG Kaoping',SHI Chengfang,ZHUMenggao',CUI Xiaona',LIU Zhu
(1. Northeast Petroleum University, a. School of Petroleum Engineering, b. Key Laboratory of Enhanced Oil and Gas Recovery, Daqing. Heilongjiang 163318, China; 2. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
3. Binnan Oil Production Plant, Shengli Oilfield Company, Sinopec, Binzhou, Shandong 256600, China)
Abstract: As the matured waterflooding oilfields in China are mostly at high/ultra-high water cut stages, and plane and interlayer conflicts become more serious, remaining oil distribution is highly dispersed and economic and efficient production becomes more and more diffi-cult. In order to meet the requirements to identify preferential flow paths quickly and accurately and to control the ineffective and low effec-tive circulation for oilfields, this paper puts forward a new method to fast forecast layered production indexes for individual wells based on the conventional numerical simulation technology and the method of water flooding curves. In this paper, 1O relative permeability curves of natural cores selected by Daqing oilfield are studied, it is found that the recovery percent of reserves and water-oil ratio exhibit a good lin-ear relation in semi-log coordinate system with the correlation coefficient greater than 0.99, Based on this, the functional relationship among the slope and intercept of the expression and permeability is calculated by using parameter regression, and then the relationship be-tween reeovery pereent of reserves and water cut (or water fractional flow) under various permeability is obtained. Combining single well production split with the above formula, the paper establishes a new forecasting model of layered production indexes for individual wells, and simultaneously proposes a production correction method using actual production data. Compared with the calculation resuits obtained from Ecelipse numerical simulation software, the maximum error between the waterflooding recovery factors obtained from the 2 methods is 2.72%. The calculation results of the dynamic index of the actual production block shows that the method is simple and easy to learn, which can forecast the layered production indexes of water flooding reservoirs efficiently and accurately, and can solve the problems such as time-consuming, complex computation and human intervention in previous forecast methods.
Keywords: waterflooding oilfield; multiple-pay reservoir; layered production index; waterflooding type curve; forecasting method; parameter
regression
中国东部大庆、胜利、大港等老油田，已进入高含水、特高含水开采阶段。这些油田经过几十年的水驱开采，有些区块尽管含水率已达到95%以上，但采出程度却不到40%-2]。测试资料也表明，70%以上的采
收稿日期：2016-08-31
修订日期：2016-12-28
出水来自于厚度不足30%的相对高渗透层，剩余油饱和度和剩余油潜力在高、中、低渗油层及平面上不同部位的差异进一步增大，沿优势渗流通道形成的注人水低效和无效循环更加明显，油井分层产液量、产油
基金项日：国家科技重大专项（2016ZX05010003-003）；国家自然科学基金（51574085）
作者简介：董驰（1983-），女，吉林农安人，讲师，油气田开发，（Tel)0459-6504014(E-mail)dongchidongchi@163.com 万方数据