珠江口盆地A油田储集层参数概率分布有效性检验及油气储量评估

发布时间：2018-05-31 09:00

本文选题：珠江口盆地 + 地质参数　；参考：《新疆石油地质》2017年03期

【摘要】：在圈闭面积大且钻井资料少的区块,采用概率法计算圈闭资源量是最为有效的方法。首先采用A-D检验法、K-S检验法和卡方(χ2)检验法对珠江口盆地A油田各地质参数分布模型的合理性进行检验,同时采用地质含义以及美国石油工程师协会与美国证券交易委员会相关规定对储量参数数值分布进行有效性检验,建立适合A油田实际情况的参数概率分布模型。以A油田Z7油藏为例,根据上述方法和流程进行应用,考虑到Z7油藏圈闭展布形态呈马鞍状和井控程度较低,引入形状因子减小构造形态不规则对储量评估的影响。实例研究表明,概率法可获得各储量参数定量化概率分布,有利于对影响储量变化因素进行不确定性分析,对地下油气资源量潜力和风险评价更为客观和全面,概率法计算的期望储量结果与Z7油藏确定性方法计算储量规模接近,二者储量误差不到2%,研究结果表明,使用本文储量评估方法对圈闭面积大且钻井资料少的油藏资源量评价具有一定指导意义。
[Abstract]:In the block with large trap area and less drilling data, the probability method is the most effective method to calculate the trap resource. Firstly, A-D test method and chi-square test method are used to test the rationality of the distribution model of quality parameters in A oilfield in Pearl River mouth Basin. At the same time, the validity of the numerical distribution of reserve parameters is tested by the geological meaning and the relevant regulations of the American Petroleum Engineers' Association and the Securities and Exchange Commission of the United States, and the probability distribution model of the parameters suitable for the actual situation of the A oilfield is established. Taking Z7 reservoir in A oilfield as an example, according to the above methods and procedures, considering the saddle shape of trap distribution and low well control degree in Z7 reservoir, the influence of introducing shape factor to reduce the irregularity of structural form on reserve evaluation is considered. The case study shows that the probability method can obtain the quantitative probability distribution of each reserve parameter, which is beneficial to the uncertainty analysis of the factors affecting the reserve change, and the evaluation of the potential and risk of underground oil and gas resources is more objective and comprehensive. The expected reserves calculated by the probabilistic method are close to those calculated by the deterministic method of Z7 reservoir, and the reserve error between them is less than 2. The results show that, The method of reserve evaluation in this paper has certain guiding significance for the evaluation of reservoir resources with large trap area and less drilling data.
【作者单位】：中海石油(中国)有限公司深圳分公司;
【基金】：国家科技重大专项(2011ZX05023-006-03)
【分类号】：P618.13

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