多因素的页岩吸附气量计算及影响因素效应分析

发布时间：2018-11-23 17:10

【摘要】：页岩吸附气含量评估是气藏储量预测和目标区优选的关键。总有机碳含量(TOC),干酪根成熟度(Ro),温度(T)与压力(P)是影响页岩吸附气量(V)的主要因素,其中T与P随深度(H)的增加同时增大,故H反应两者的综合作用。基于等温吸附实验结果,建立考虑TOC、Ro、H三因素的吸附气量计算模型,并结合正交分析法分析各因素影响效应及敏感性,结果表明:V与TOC、Ro呈正相关,与H的关系存在转折点。所取样品对吸附气量敏感性排序依次为HTOCRo,且在一定深度以浅,压力的敏感性大于温度;在此深度以深,温度的敏感性大于压力。该计算模型可评估任意H、TOC、Ro条件下的页岩气藏储量,分析方法也可为页岩储层评价参数优选提供依据。
[Abstract]:The evaluation of shale adsorbed gas content is the key to prediction of gas reservoir reserves and optimal selection of target areas. Total organic carbon content (TOC),) kerogen maturity (Ro), temperature (T) and pressure (P) are the main factors affecting the amount of (T) adsorbed by shale, in which T and P increase with the increase of the depth of (H). So the comprehensive action of H reaction and H reaction. Based on the experimental results of isothermal adsorption, a calculation model of adsorption gas volume considering three factors of TOC,Ro,H was established, and the effects and sensitivities of each factor were analyzed by orthogonal analysis. The results showed that V and TOC,Ro were positively correlated with each other. There is a turning point in the relationship with H. The order of the sensitivity of the sample to the adsorption amount is HTOCRo, and the sensitivity of pressure is greater than that of temperature at a certain depth, and the sensitivity of temperature is greater than that of pressure at this depth. The model can be used to evaluate the reserves of shale gas reservoirs under arbitrary Hedoco Ro conditions, and the analytical method can also provide a basis for the optimal selection of shale reservoir evaluation parameters.
【作者单位】：太原理工大学地球科学与工程系;
【分类号】：P618.13

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