CAJ | 학술논문

在多煤层发育的地区，实施分层压裂、合层排采工艺技术是一项降低煤层气勘探开发成本、提高产气量的重要举措。吴堡矿区煤层气资源丰富，其主力煤层为S1、T1煤层。为探讨分压合排技术在吴堡矿区煤层气勘探开发中的适用性，通过分析吴堡矿区主力煤层(S1、T1)的煤层气分压合排影响因素，研究了煤层气分压合排技术适应条件和本区S1、T1煤层分压合排的可行性。结果表明：虽然吴堡矿区S1、T1煤层的压力梯度和渗透率差别不大，但其煤层顶底板岩石特征和水文地质条件有差异，分压合排过程中存在层间干扰。因此，在现有技术条件下，不适合对本区S1、T1煤层采用分压合排技术。现场勘探试验井的排采效果也验证了理论分析的可靠性。
재다매층발육적지구，실시분층압렬、합층배채공예기술시일항강저매층기감탐개발성본、제고산기량적중요거조。오보광구매층기자원봉부，기주력매층위S1、T1매층。위탐토분압합배기술재오보광구매층기감탐개발중적괄용성，통과분석오보광구주력매층(S1、T1)적매층기분압합배영향인소，연구료매층기분압합배기술괄응조건화본구S1、T1매층분압합배적가행성。결과표명：수연오보광구S1、T1매층적압력제도화삼투솔차별불대，단기매층정저판암석특정화수문지질조건유차이，분압합배과정중존재층간간우。인차，재현유기술조건하，불괄합대본구S1、T1매층채용분압합배기술。현장감탐시험정적배채효과야험증료이론분석적가고성。
The implement of separate layer fracturing and multi-layer drainage in the multiple coal seams is an important method to reduce the costs of exploration and development, and to increase the gas production. There are rich CBM (coalbed methane) resources in Wubu mining area, and S1 and T1 are two major CBM-producing seams. To study the applicability of this technology in Wubu mining area, the influential factors of separate layer fracturing and multi-layer drainage for coal seams S1 and T1 have been analyzed. The feasibility of separate layer fracturing and multi-layer drainage in Wubu mining area is discussed. The result indicates that the pressure gradient and permeability of the coal seams S1 and T1 are similar, but the properties of the roof with backplane and hydrogeological conditions are different, the inter-layer interference exists in the separate layer fracturing and multi- layer drainage process. So the technology of separate layer fracturing and multi-layer drainage is not suitable tor coal seams S1 and T1 in Wubu mining area at present. The early drainage effect of CBM wells in Wubu mining area has verified the reliability of theoretical analysis.