摘要
随着油气勘探技术的提高,越来越多的异常高压气藏被发现和开发。异常高压气藏偏差系数的确定非常重要,直接影响到气藏储量计算和动态分析的正确性。目前,确定气藏偏差系数的方法主要有实验测定法、图版法和经验公式法,各种计算方法结果差别很大。针对迪那2异常高压气藏,对比研究了7种常用计算偏差系数的方法,根据实测值对常用7种计算异常高压气藏偏差系数方法进行优选。结果表明,对于迪那2异常高压气藏,当3≤Pr<15时,BB法适用性最好,与实测值平均相对误差最小为1.159%;当15≤Pr≤30时,DAK法适用性最好,与实测值平均相对误差最小为1.604%。所研究结果为此类异常高压气藏偏差系数计算和气藏开发提供一定指导意义。
With the development of oil and gas exploration technology, more and more abnormally pressured gas reservoirs are discovered and developed. The determination of deviation factor for abnormally pressured gas reservoirs is of great importance, which affects the accuracy of calculating gas reserves and dynamic analysis. At present, the methods of determining deviation factor for abnormally pressured gas reservoirs mainly include experimental measurement, chart method and empirical formula method, and the results vary greatly from different calculating methods. Aiming at the abnormally pressured gas reservoirs in the Dina- 2 gas field, seven common calculating methods for deviation factor were investigated and optimized according to the experimental value. The results show that the BB method is the best choice for calculating the abnormally pressured gas reservoirs at 3≤Pr 〈 15, and the average relative error minimum with the experimental value is 1. 159%. While the DAK method is the best one at 15 ≤Pr ≤30, and the average relative error minimum is 1. 604%. The research result provides certain signifi- cance for the deviation factor calculation and development of the abnormally pressured gas reservoirs.
出处
《科学技术与工程》
北大核心
2014年第31期204-208,共5页
Science Technology and Engineering
基金
国家科技重大专项"大型气田开发规律与开发技术对策研究"(50150503-12)
塔里木油田勘探开发关键技术研究(2010E-2103)联合资助
关键词
异常高压气藏
偏差系数
计算方法
筛选与推荐
abnormal pressured gas reservoirs deviation factor calculating methods selectionsand recommendations
