海上稠油油田水驱开发时效采出比计算方法及评价

王敏 陈民锋 刘广为 盖建 时建虎

中国石油大学（北京）石油工程学院，北京 102249

College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China

由于海洋钻井平台寿命有限，且海上油田相比陆上油田投资成本巨大，一般海上油田开发追求较短的开发周期和较高的采油速度，因此，在海上油田水驱开发效果评价中提出了体现时效性的新指标——时效采出比。基于不同油水黏度比下的含水率与采出程度关系，并利用收支平衡原理确定不同产量级别下的单井经济极限含水界限，进而建立了时效采出比理论值计算方法。以海上稠油油田某2个典型油藏进行了实例计算，得到典型油藏时效采出比理论值及其评价分级标准。通过评价时效采出比指标，可体现海上油田水驱开发时效性的强弱与水驱效果的好坏。时效采出比计算及评价方法的建立，可作为海上油田水驱开发效果评价指标体系的重要补充。

Due to the limited life span of drilling platform, the investment cost of offshore oilfield is more expensive and the development cycle is shorter and the oil production rate is much higher than that on onshore oilfield. So this artical proposes a new index to reflect timeliness of offshore oilfield development during water flooding evaluation?鄄aging recovery ratio. Based on the theoretical curves of water cut and recovery percent under different oil?鄄water viscosity ratio and the fund balance principle, the economy limit water cut of oil well under different production degree is determined so that the theoretical calculation method of aging recovery ratio is established. Taking two blocks in offshore oilfield as an example, the theoretical value of aging recovery ratio is calculated and grading evaluation criterion is proposed. Timeliness and water flooding efficiency of offshore oilfield can be reflected by evaluating aging recovery ratio this index. Calculation and evaluation method of aging recovery ratio can be used as an important complement to the water flooding evaluation system of offshore oilfield.

10.6056/dkyqt201502020