發(fā)布時間：2019-07-04 07:39

【摘要】：廊固凹陷油氣勘探對象以構(gòu)造類型為主,隨著勘探程度逐漸提高,發(fā)現(xiàn)規(guī)模油氣儲量的難度越來越大。第四次資源評價認為,該凹陷剩余石油資源量1.72×108t,剩余天然氣資源量954×108m3,具備較大的資源潛力。因此,進一步深化構(gòu)造油氣成藏規(guī)律研究,構(gòu)建合理的成藏模式,優(yōu)選有利區(qū)帶,可為下步勘探提供依據(jù)。本文結(jié)合前人研究成果,以凹陷整體連片三維地震數(shù)據(jù)體為基礎(chǔ),綜合運用石油地質(zhì)學、層序地層學、沉積學等理論知識,對廊固凹陷的構(gòu)造特征、烴源巖體系、儲層及儲蓋組合特征開展整體重新認識,進一步明確了凹陷的基本石油地質(zhì)特征。通過解剖典型油氣藏,精細落實有利構(gòu)造圈閉的分布,明確了廊固凹陷烴源巖分布范圍宏觀上控制油氣富集區(qū)域,斷裂構(gòu)造特征控制油氣聚集,砂體類型與斷層、不整合面耦合控制油氣成藏等油氣成藏規(guī)律,并創(chuàng)新構(gòu)建了大柳泉鼻狀構(gòu)造帶側(cè)生旁儲-遠源供烴-圈閉控藏成藏、下生上儲-混源供烴-斷層控藏成藏,河西務(wù)構(gòu)造帶平臺式地壘反向斷塊、中央斷壘帶雙向供烴壘斷塊等油氣成藏模式,從而優(yōu)選出大柳泉構(gòu)造帶、河西務(wù)構(gòu)造帶作為下步勘探的有利區(qū)帶。
[Abstract]:The main oil and gas exploration objects in Langgu sag are structural types. With the gradual improvement of exploration degree, it is more and more difficult to discover large-scale oil and gas reserves. The fourth resource evaluation shows that the remaining oil resources and natural gas resources in the sag are 1.72 脳 108t and 954 脳 108m3, respectively, which have great resource potential. Therefore, further deepening the study of structural oil and gas accumulation law, constructing a reasonable reservoir forming model and optimizing favorable zones can provide the basis for further exploration. Based on the previous research results and the theoretical knowledge of petroleum geology, sequence stratigraphy and sedimentology, the structural characteristics, source rock system, reservoir and cap rock assemblage characteristics of Langgu sag are reunderstood in this paper, and the basic petroleum geological characteristics of the sag are further clarified by using the theoretical knowledge of petroleum geology, sequence stratigraphy and sedimentology. By dissecting typical oil and gas reservoirs and fine implementing the distribution of favorable structural traps, it is clear that the distribution range of source rocks in Langgu sag controls oil and gas accumulation area macroscopically, fault structure characteristics control oil and gas accumulation, sand body type and fault, unconformity surface coupling control oil and gas accumulation, and innovatively constructs lateral side reservoir, far source hydrocarbon supply and trap reservoir formation in Daliuquan nose structural belt. The oil and gas accumulation models, such as the lower upper reservoir-mixed source hydrocarbon supply-fault controlled reservoir formation, the platform barrier reverse fault block and the central fault base zone, are selected, so that the Daliuquan structural belt and the Hexiwu structural belt are selected as the favorable zone for the next exploration.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：P618.13

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