成都理工大学学报（自然科学版）
成都理工大學學報（自然科學版）
성도리공대학학보（자연과학판）
JOURNAL OF CHENGDU UNIVERSITY OF TECHNOLOGY(SCIENCE & TECHNOLOGY EDITION)
2014年
5期
548-555
,共8页
须家河组%致密砂岩%成藏模式%四川盆地
鬚傢河組%緻密砂巖%成藏模式%四川盆地
수가하조%치밀사암%성장모식%사천분지
Xuj iahe Formation%tight sandstone%hydrocarbon accumulation model%Sichuan Basin
探讨川东南地区须家河组致密砂岩油气成藏条件与主要成藏模式，为进一步深化该领域的勘探提供参考。通过对川东南地区须家河组烃源、储层、盖层和圈闭条件等成藏要素的分析及以官渡须四段气藏为代表的典型气藏解剖，表明川东南地区须家河组气藏主要为“深生浅聚”型的远源成藏模式，气藏具有“多期运移聚集，断层裂缝联合输导，喜马拉雅期调整成藏”的特点。具备与下部海相烃源岩沟通的断层输导体是川东南须家河组远源成藏的关键因素。良好的砂岩储集体匹配发育的裂缝系统，是该区天然气富集高产的保证。川东南地区须家河组油气勘探方向应以“位于心滩、边滩等有利沉积相带内，伴随发育烃源断层形成的致密砂岩构造-岩性复合圈闭及构造圈闭”为主。
探討川東南地區鬚傢河組緻密砂巖油氣成藏條件與主要成藏模式，為進一步深化該領域的勘探提供參攷。通過對川東南地區鬚傢河組烴源、儲層、蓋層和圈閉條件等成藏要素的分析及以官渡鬚四段氣藏為代錶的典型氣藏解剖，錶明川東南地區鬚傢河組氣藏主要為“深生淺聚”型的遠源成藏模式，氣藏具有“多期運移聚集，斷層裂縫聯閤輸導，喜馬拉雅期調整成藏”的特點。具備與下部海相烴源巖溝通的斷層輸導體是川東南鬚傢河組遠源成藏的關鍵因素。良好的砂巖儲集體匹配髮育的裂縫繫統，是該區天然氣富集高產的保證。川東南地區鬚傢河組油氣勘探方嚮應以“位于心灘、邊灘等有利沉積相帶內，伴隨髮育烴源斷層形成的緻密砂巖構造-巖性複閤圈閉及構造圈閉”為主。
탐토천동남지구수가하조치밀사암유기성장조건여주요성장모식，위진일보심화해영역적감탐제공삼고。통과대천동남지구수가하조경원、저층、개층화권폐조건등성장요소적분석급이관도수사단기장위대표적전형기장해부，표명천동남지구수가하조기장주요위“심생천취”형적원원성장모식，기장구유“다기운이취집，단층렬봉연합수도，희마랍아기조정성장”적특점。구비여하부해상경원암구통적단층수도체시천동남수가하조원원성장적관건인소。량호적사암저집체필배발육적렬봉계통，시해구천연기부집고산적보증。천동남지구수가하조유기감탐방향응이“위우심탄、변탄등유리침적상대내，반수발육경원단층형성적치밀사암구조-암성복합권폐급구조권폐”위주。
This paper discusses the forming conditions of oil and gas accumulation and the main accumulation model of the tight sandstone in Upper Triassic Xujiahe Formation of Southeast Sichuan in order to provide references for deepening the oil and gas exploration of the area.Based on the analysis of the factors of hydrocarbon accumulation,such as hydrocarbon source,reservoirs,cap rocks and traps of Xujiahe Formation,and the dissection of the typical gas pool represented by that in the 4th member of Xujiahe Formation in Guandu,it is found that the distal gas accumulation is the main accumulation model of Xujiahe Formation in Southeast Sichuan,and the fault fractures formed in Himalayan motion period are the channels of gas migration.The fault fissure conductive bodies cutting through the lower marine hydrocarbon source rocks become the key factors of the distal gas accumulation of Xujiahe Formation in Southeast Sichuan,and the favorable sandstone reservoirs and the developed fracture system stand sure for high productivity of gas.Finally,the main oil and gas exploration direction in Xuj iahe Formation of the area is to seek for the tectonic-lithologic combination trap and structural trap of the tight sandstone with favorable hydrocarbon source rock fractures located in the advantageous diara and point bar facies zone.
