CAJ | 학술논문

以四川盆地南部嘉陵江组钻探和开发成果为基础,分析了嘉陵江组气藏的烃源、储层、盖层和圈闭条件等成藏要素,研究认为烃源断层是二叠系和更深层烃源层中天然气进入嘉陵江组的重要输导条件,烃源断层不发育的构造因为嘉陵江组自身烃源条件差难以形成气藏.嘉陵江组天然气藏为依靠喜马拉雅期断层输导的远源成藏模式,成藏控制因素可概括为:烃源断层控制了气源;沉积成岩相带、中三叠世末期古隆起剥蚀作用和裂缝发育控制了储层分布、储层渗透性与连通范围;古隆起剥蚀作用和断层作用同样控制了圈闭的保存条件.
이사천분지남부가릉강조찬탐화개발성과위기출,분석료가릉강조기장적경원、저층、개층화권폐조건등성장요소,연구인위경원단층시이첩계화경심층경원층중천연기진입가릉강조적중요수도조건,경원단층불발육적구조인위가릉강조자신경원조건차난이형성기장.가릉강조천연기장위의고희마랍아기단층수도적원원성장모식,성장공제인소가개괄위:경원단층공제료기원;침적성암상대、중삼첩세말기고륭기박식작용화렬봉발육공제료저층분포、저층삼투성여련통범위;고륭기박식작용화단층작용동양공제료권폐적보존조건.
Based on the data of drilling and development of Lower Triassic Jialingjiang Formation in the south of Sichuan Basin, this paper analyses the factors of hydrocarbon accumulation, such as hydrocarbon source, reservoirs, cap rocks and traps. It reveals that the gas in the reservoir of the Jialingjiang Formation originates from Permian and/or the lower strata through the fault with hydrocarbon source during Himalayan Movement and there are no gas reservoirs in the structures without developed faults with hydrocarbon source. The process of forming reservoirs is described as the model of the distal source controlled by the faults with hydrocarbon source. The key factors of hydrocarbon accumulation are summarized as follows: the gas sources could be controlled by the faults with hydrocarbon source during Himalayan Movement, the distribution of reservoirs could be controlled by the sedimentation, diagenesis as well as paleolift during the end of Middle Triassic, and the preservation condition of traps could be controlled by the paleolift during the end of Middle Triassic and the fault during Himalayan Movement.