文献类型：期刊文献

中文题名：煤系气联合开发甜层评价方法研究

英文题名：Study on sweet layers evaluation method for coal measures gas joint development

作者：杨宗楠 孙长彦 范毅刚 许猛堂 孙俊义 余莉珠

第一作者：杨宗楠

机构：[1]河南理工大学资源环境学院,河南焦作454003;[2]贵州理工学院矿业工程学院,贵州贵阳550003;[3]中石油煤层气有限责任公司临汾采气管理区,山西太原030032

第一机构：河南理工大学资源环境学院,河南焦作454003

年份：2023

卷号：54

期号：1

起止页码：62-69

中文期刊名：煤矿安全

外文期刊名：Safety in Coal Mines

收录：CSTPCD;;北大核心:【北大核心2020】；

基金：山西省科技攻关计划资助项目(20191102001);贵州省科技重大专项资助项目([2018]3005)。

语种：中文

中文关键词：煤系气开发;多层次模糊数学法;资源条件;可改造性;甜层

外文关键词：coal measure gas development;multi-level fuzzy mathematics method;resource condition;reformability;sweet layer

摘要：选取影响煤系气开发的主要地质因素,采用多层次模糊数学法构建了煤系气开发甜层评价体系,其中各类储层的可改造性权重最高,资源丰度其次,可采性所占权重相对较低。在此基础上,对河南平顶山矿区HN-02井主采煤层所在下石盒子组和山西组地层进行甜层评价,优选出15个甜层,包含煤层7层、泥页岩甜层7层、致密岩甜层1层;各甜层中,二_(1)煤、四_(2)煤及其底板炭质泥岩具有良好的资源条件,四_(3)煤顶板细砂岩与泥岩、四_(2)煤底板薄煤层与炭质泥岩、下石盒子组底部泥岩具有较高的可改造性。煤系气开发阶段,优先对甜层进行射孔、压裂,有利于在有限的施工规模下提升井控范围内可采资源量、储层改造效果,进而促进煤系气高效产出。
This paper selects the main geological factors that affect the coal measure gas(CMG)development, and adopts a multilevel fuzzy mathematical method to construct a sweet layer evaluation system. Among the factors concerned, the reservoir reformability possesses the highest weight, followed by the resource abundance and the gas recoverability. On this basis, the lower Shihezi and Shanxi formations of a vertical well(HN-02) in Pingdingshan Mining Area is evaluated for selecting CMG development sweet layers. As a result, 15 sweet layers are selected, including 7 coal seams, 7 shale layers and 1 tight sandstone layer. Among these sweet layers, the 2_(1)coal, the 4_(2)coal and its floor carbonaceous mudstone have good resource conditions. The 4_(3)coal roof fine sandstone and mudstone, the 4_(2)coal floor thin coal seam and carbonaceous mudstone, as well as the bottom mudstone of the lower Shihezi Formation possess high reformability. During the CMG development stage, the sweet layers are suggested to be perforated and fractured preferentially, which would be conducive to improve the recoverable resources within the well control range and the reservoir stimulation effect under an limited fracturing scale, so as to promote the efficient production of coal measure gas.