中国煤层气盆地改造作用及其类型分析

Alteration of Coalbed Methane Basin in China and Their Classification

从煤层气富集成藏地质条件分析入手,在研究聚煤盆地的后期改造特征基础上,将煤层气盆地定义为"具有工业价值煤层气藏形成和保存条件含煤盆地"。煤层气盆地改造是剥蚀、埋藏、断褶、断块、热力和流体等6种改造作用单一或复合作用的结果,据改造作用可将煤层气盆地划分为单一改造作用型和复合改造作用型两大类型,又可进一步分为4种单一改造作用亚型和14种复合改造作用亚型。

Based on the geological features of coalbed methane accumulation and the late reformation of coalforming basins,this paper confirmed that coalbed methane basin can be defined as coal-bearing basin with industry value and conservation conditions. The coalbed methane basin is the compound produet by erosion, burial, faulting and folding, thermal power and hydromechanics. Based on the reformation types, the paper divided coalbed methane basin into single reformation type and compound reformation type, both of which can be further classified into four subtypes for the former and fortheen subtypes for the latter.