青海木里地区天然气水合物和煤层气联合开发可行性分析

Feasibility analysis on the joint development of natural gas hydrate and coalbed methane in Muli area of Qinghai province, China

青海木里地区天然气水合物资源丰富,采用单一降压法开采水合物产气量较低。综合考虑该地区煤层气勘探开发潜力,提出了青海木里地区进行天然气水合物和煤层气联合开发的概念模式,并从天然气水合物和煤层气的赋存模式、开采原理、开发技术等方面分析了联合开发的可行性,以及需要解决的资源评价及选区、压裂增产、环境保护等关键问题,为实现该地区天然气水合物和煤层气的联合开发提供了参考依据。

The Muli area of Qinghai province is rich in natural gas hydrate resources,and the production of hydrate is lower by the solely using of depressurization method.By considering the exploration and development potential of coalbed methane in this area comprehensively,the conceptual model of joint development of natural gas hydrate and coalbed methane in Muli area of Qinghai was proposed,the feasibility of joint development was analyzed from the aspects of occurrence modes,recovery mechanism and development technology of natural gas hydrate and coalbed methane,and the existing key issues on resource evaluation and zone selection,fracturing stimulation,and environmental protection were analyzed as well.This paper provides reference for the joint development of natural gas hydrates and coalbed methane in this region.