江汉石油职工大学学报
江漢石油職工大學學報
강한석유직공대학학보
JOURNAL OF JIANGHAN PETROLEUM UNIVERSITY OF STAFF AND WORKERS
2012年
1期
10-15
,共6页
松辽盆地%三维地震%梨树断陷%油气成藏
鬆遼盆地%三維地震%梨樹斷陷%油氣成藏
송료분지%삼유지진%리수단함%유기성장
Songliao Basin%3D Seismics%Lishu Fault Depression%Oil and Gas Accumulation
在三维地震的基础上，通过精细的构造解释，对梨树断陷的构造格架进行重新划分，对油气成藏的基本模式、油气成藏的主控因素进行了分析。划分深部、中部、浅部三套成藏组合，存在近源侧向运移为主的自生自储型成藏模式、远源垂向运移为主的下生上储型成藏模式；将梨树断陷层构造单元划分为：毛城子斜坡带、八屋隆起带、小宽洼陷、小城子斜坡带、桑树台洼陷、双龙洼陷等6个构造单元；认为陡坡带存在构造（断鼻）油气藏，主洼槽带（断槽）存在岩性（湖底扇）油气藏，中央隆起带存在构造、岩性、潜山、地层油气藏；次洼槽带存在岩性、构造一岩性油气藏、斜坡带存在构造一岩性、地层油藏；八屋隆起带（中央隆起带）有效的储层和保存条件是油气成藏的主控因素；小城子、毛城子斜坡带（东部、北部斜坡带），不整合面和泥岩对油气的封堵是该领域成藏的主控因素；桑树台洼陷陡坡带，有效的储层和圈闭是该领域成藏的主控因素。
在三維地震的基礎上，通過精細的構造解釋，對梨樹斷陷的構造格架進行重新劃分，對油氣成藏的基本模式、油氣成藏的主控因素進行瞭分析。劃分深部、中部、淺部三套成藏組閤，存在近源側嚮運移為主的自生自儲型成藏模式、遠源垂嚮運移為主的下生上儲型成藏模式；將梨樹斷陷層構造單元劃分為：毛城子斜坡帶、八屋隆起帶、小寬窪陷、小城子斜坡帶、桑樹檯窪陷、雙龍窪陷等6箇構造單元；認為陡坡帶存在構造（斷鼻）油氣藏，主窪槽帶（斷槽）存在巖性（湖底扇）油氣藏，中央隆起帶存在構造、巖性、潛山、地層油氣藏；次窪槽帶存在巖性、構造一巖性油氣藏、斜坡帶存在構造一巖性、地層油藏；八屋隆起帶（中央隆起帶）有效的儲層和保存條件是油氣成藏的主控因素；小城子、毛城子斜坡帶（東部、北部斜坡帶），不整閤麵和泥巖對油氣的封堵是該領域成藏的主控因素；桑樹檯窪陷陡坡帶，有效的儲層和圈閉是該領域成藏的主控因素。
재삼유지진적기출상，통과정세적구조해석，대리수단함적구조격가진행중신화분，대유기성장적기본모식、유기성장적주공인소진행료분석。화분심부、중부、천부삼투성장조합，존재근원측향운이위주적자생자저형성장모식、원원수향운이위주적하생상저형성장모식；장리수단함층구조단원화분위：모성자사파대、팔옥륭기대、소관와함、소성자사파대、상수태와함、쌍룡와함등6개구조단원；인위두파대존재구조（단비）유기장，주와조대（단조）존재암성（호저선）유기장，중앙륭기대존재구조、암성、잠산、지층유기장；차와조대존재암성、구조일암성유기장、사파대존재구조일암성、지층유장；팔옥륭기대（중앙륭기대）유효적저층화보존조건시유기성장적주공인소；소성자、모성자사파대（동부、북부사파대），불정합면화니암대유기적봉도시해영역성장적주공인소；상수태와함두파대，유효적저층화권폐시해영역성장적주공인소。
Through fine structure interpretation based on three--dimensional seismics, the author has again divided tectonic framework of Lishu fault depression and analyzed basic mode governing oil and gas accumulation and the key factors. Dividing deep, intermediate and superficial sections into three reservoir combinations, there are two accumulation models： one model which is auto-- product and auto--reservoir migrates toward the sides; the other which is lower product and upside reservoir migrates vertically. Dividing Lishu fault depression into six tectonic elements including Maochengzi and Xiaochengzi slope belts, Bawu upwarping zone, Xiaokuan, Shangshutai and Shuanglong depressions, it is believed that structure（fault--nose） reservoir occurs in slope belt; lithologic reservoir in main trough fault; structure reservoir, lithologic reservoir, buried hill reservoir or stratigraphic reservoir in central uplift zone; structure--lithologic reservoir in secondary trough fault. It is also found that the effective reservoir and conservation condition of Bawu upwarping zone contributes to the accumulation; oil and gas blocked off by unconformities and mud rock in Maochengzi and Xiaochengzi slope belts to the accumulation; effective reservoir and trap of Shangshutai depression slope zone to the accumulation.
