加水与不加水热模拟实验条件下煤生烃特征对比

Hydrocarbon generating characteristics of lignite in
hydrous and nonhydrous condit ions

王秀红1, 2 金 强1 胡晓庆3 樊 茹1 王 力1 王 娟1 王婷婷4

W ang X iuhong ,Jin Qiang, Hu X iaoqing, et al.

1 中国石油大学地球资源与信息学院, 山东东营257061; 2 胜利油田分公司地质科学研究院, 山东东营257015;

3 中海石油研究中心, 北京100027; 4 辽河石油勘探局, 辽宁盘锦124010

College of Geo - R esources and
Information, China University of Pe troleum, Dongy ing
257061, China

The ob jectives of the study are to com pare the gas
genera ting character istics from lign ite artificia lly m atured by
nonhydrous pyro lysis and hydrous py ro ly sis. The resu lts show
tha t hydrocarbon vo lum e pe rcent and dry ing coeffic ient are
ep isod ic chang ing w ith temperatu re in both conditions. It
re flects the m ain reaction and the precursor continuously
change dur ing the hydro carbon generating process. The heavy
hydrocarbon is pyro lysised faster in nonhydrous cond ition and
there is few le ft until 650􀀁 . At low temperature stag e, the
oxygen- r ich part in organ ic substance w ill decarbox ylate to
br ing som e CO2. The y ie ld of CO2 w ill increase abruptly in
the hydrous experim ent 700􀀁 . M aybe it is related to wa ter
gas reaction, so does the nonhydrous experim ent wh ile it is
caused by the decomposition o f carbonate cem ent at h igh
tem pera ture. H ydrous condition is m ore high - y ie ld when
considered the production. It indicates that the wa ter
participates in the hydrocarbon g eneration reaction