生物成因煤层气生成的主控因素探讨

根据国内外学者的研究,由于生物成因煤层气持续生成,一些煤层气井的采出总量远远高于勘探阶段发现的资源总量,因此,了解生物成因煤层气的形成机理,对勘探开发这部分煤层气资源具有重要意义。然而,经过多年研究,生物成因煤层气的形成机理依然不明。本文在大量阅读国内外相关文献的基础上,对影响生物成因煤层气生成的主控因素:生成途径、鉴别标志、生成条件、与其生成相关的微生物菌群等进行了总结,指出了目前生物成因煤层气生成机理研究方面存在的问题。这对查明生物成因煤层气的形成机理,探讨煤与微生物的作用过程,指导煤层气勘探开发具有重要的理论和实际意义。

Investigation on Major Controlling Factor for Formation of Biogenic CBM

Based on research of scholars at home and abroad,the total yield of some CBM wells is by far greater than the total resource found in the exploration period due to consistent formation of biogenic CBM.Therefore,it is of important significance to understand the mechanism for formation of biogenic CBM for exploration and development of this part of CBM resources.However,after many years of research,the mechanism for formation of biogenic CBM is still unclear.The authors of this paper have summarized on the basis of reading large volume of literatures at home and abroad the major controlling factors,i.e.formation approaches,discrimination marks,formation conditions,and bacterial colony of microorganism relevant to its formation and pointed out the existing problems in studying the formation mechanism of biogenic CBM.This is of important theoretical and practical meaning in finding out the formation mechanism of biogenic CBM,in discussion of the interaction between coal and micro-organism and in guiding CBM prospecting and development.