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沉积微相是决定储层物性好坏的重要因素之一,并是油气分布主要控制因素,因此沉积微相模拟结果的准确性和可靠性研究在精细油藏描述中起着举足轻重的作用。为了对沉积微相不同的随机模拟方法的适应性及其优劣进行量化分析和模拟结果真实性研究,本文以低井控、低渗透的吉林油田高台子油藏为例,采用多点地质统计学算法与普遍使用的序贯指示模拟两种算法对沉积微相进行模拟。其对比结果表明:在辨状河三角洲沉积相带下,运用多点地质统计学方法在低井控条件下模拟结果明显优于序贯指示模拟结果且具有较强的预测性,对油田中后期开发具有较强的指导意义,特别是在井间预测中有较强的指导意义。
Sedimentary microfacies are one of the most important factors that determine the physical property of reservoirs and are the main controlling factors of oil and gas distribution. Therefore, the study of the accuracy and reliability of sedimentary microfacies simulation plays an important role in the description of fine reservoirs. In order to quantitatively analyze the adaptability of the stochastic simulation methods and the authenticity of the simulation results of different stochastic simulation methods, this paper takes the Gautai reservoir of Jilin Oilfield with low well control and low permeability as an example, Two algorithms are used to simulate sedimentary microfacies. The comparison results show that under the sedimentary facies of the deltaic deltaic system, the multi-point geostatistics method is better than that of the sequential indication simulations under low well control conditions, Development has a strong guiding significance, especially in the cross-well prediction has a strong guiding significance.