中国地质2012，Vol.39Issue(1)：146-155,10.
火山岩原生储集空间成因及其四阶段演化——以准噶尔盆地滴西地区石炭系为例
The formation mechanism and four-stage evolution of volcanic primary reservoir spaces: a case study of Carboniferous volcanic rocks in Dixi area,Junggar basin
摘要
Abstract
Volcanic reservoir is usually of dual porosity medium character. The reservior spaces can be classified into two genetic categories; primary reservior spaces (PRS) and secondary reservior spaces (SRS), and most of the latter were generated from the fomer by late diagenesis. Based on extensive identification and description of casting thin section, this paper divided the PRS of Carboniferous igneous rocks in Dixi area into five types of primary pores (gas pores, residual amygdale, intergranular pores, intragranular pores and intercrystal pores) and four types of primary fractures (shrinkage joint, explosive fracture, intergravel crack and intercrystal crack). In combination with the influencing factors such as environment and intensity of eruption and texture and structure of rocks and according to the evolution features of magma at different stages, the formation of PRS is divided into four stages: "magma chamber" stage, outpouring surface stage, diagenetic stage of condensation and deuteric hydrothermal stage, of which the outpouring surface stage and diagenetic stage of condensation were the main periods to form primary apertures while the hydrothermal stage was the period when the number of apertures was reduced. The speed of crystallization constituted the key factor for the formation of different types of PRS. The study of the formation mechanism of igneous PRS can reveal the distribution of SRS and is of great significance in the prognosis of favorable reservoir zones.关键词
原生储集空间/形成机理/火山岩/石炭系/滴西地区/准噶尔盆地分类
天文与地球科学引用本文复制引用
熊益学,郗爱华,冉启全,刘小洪,张玉林,孙圆辉,代冬冬..火山岩原生储集空间成因及其四阶段演化——以准噶尔盆地滴西地区石炭系为例[J].中国地质,2012,39(1):146-155,10.基金项目
国家重点基础研究发展计划(973)项目(2007CBZ09507)资助. （973）
