本文選題：磨溪-高石梯　切入點：龍王廟組　出處：《西安石油大學》2017年碩士論文　論文類型：學位論文

【摘要】：以安岳氣田龍王廟組氣藏為研究對象,綜合運用天然氣地質(zhì)學、地球化學、盆地模擬等多種學科方法與技術(shù)手段,以瀝青和古油藏為切入點,以成藏歷史的恢復為主線,明確了其成藏過程,對深化川中古隆起下古生界天然氣的成藏規(guī)律、推動發(fā)現(xiàn)更多的天然氣儲量有重要意義。研究區(qū)儲層瀝青分布廣、種類多,大部分瀝青以熱演化型為主,成熟度高,瀝青量與原油裂解產(chǎn)氣量成一定的正比關系,瀝青來源于來自下寒武統(tǒng)筇竹寺組。古油藏具有一定規(guī)模,成熟度高,多為正常油-輕質(zhì)油,古油藏主要以層狀分布,與現(xiàn)今氣藏有著很好的對應關系。根據(jù)包裹體賦存的礦物、與瀝青的接觸關系,結(jié)合流體包裹體的均一溫度,將龍王廟組儲層中流體充注劃分為4期:前3期形成于持續(xù)埋深階段,在此階段中三個溫度等級代表著三期捕獲,第4期形成于構(gòu)造抬升階段。根據(jù)前人研究的古油藏規(guī)模,結(jié)合包裹體均一溫度區(qū)間數(shù)據(jù)、典型井的烴源巖熱演化史,明確了氣藏形成的四個階段:古隆起形成階段;古油藏大面積層狀形成階段;古油藏裂解階段;晚期構(gòu)造抬升氣態(tài)烴充注階段。
[Abstract]:Taking the Longwangmiao formation gas reservoir in Anyue gas field as the research object, comprehensive use of natural gas geology, geochemistry, basin simulation and other disciplinary methods and technical means, taking asphalt and paleoreservoir as the breakthrough point, taking the recovery of reservoir forming history as the main line, It is of great significance to deepen the law of gas accumulation in the lower Paleozoic and promote the discovery of more natural gas reserves in the middle and Paleozoic uplift of Sichuan. The reservoir asphalt in the study area is widely distributed and has many kinds, most of which are thermal evolution type. With high maturity, the amount of bitumen is proportional to the amount of gas produced by crude oil cracking, and the asphalt comes from the Qiongzhusi formation of the Lower Cambrian. The paleo-reservoir has a certain scale and high maturity, most of which are normal oil-light oil, and the paleoreservoirs are mainly stratified. According to the contact relationship between inclusions and bitumen and the homogenization temperature of fluid inclusions, The fluid filling in the reservoir of Longwangmiao formation is divided into four periods: the first three phases were formed in the stage of continuous burial depth, in which three temperature grades represented three stages of capture and the fourth stage was formed in the stage of tectonic uplift. Based on the homogeneous temperature interval data of inclusions and the thermal evolution history of hydrocarbon source rocks in typical wells, four stages of gas reservoir formation are defined: paleouplift formation stage, paleoreservoir stratiform formation stage, paleoreservoir pyrolysis stage, paleo-uplift formation stage, paleoreservoir pyrogeny stage, paleo-uplift formation stage, Late tectonic uplift gas hydrocarbon charging stage.
【學位授予單位】：西安石油大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：P618.13

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