發(fā)布時(shí)間：2018-04-20 00:17

  本文選題：蘇里格地區(qū) + 盒8段��； 參考：《西南石油大學(xué)》2017年碩士論文

【摘要】：鄂爾多斯盆地作為我國重要的含油氣盆地,油氣資源非常豐富。本論文以中石油長慶油田分公司2014長研招號(hào)039號(hào)項(xiàng)目《鄂爾多斯盆地上古生界盒8流體包裹體特征及其在儲(chǔ)層成巖研究中的應(yīng)用》為依托,以鄂爾多斯盆地蘇里格地區(qū)上古生界盒8段儲(chǔ)層為研究對(duì)象,借助巖心觀察、鑄體薄片、常規(guī)薄片、掃描電鏡、陰極發(fā)光、冷—熱臺(tái)、激光拉曼探針等分析化驗(yàn)手段,重點(diǎn)分析了儲(chǔ)層流體包裹體的巖相學(xué)、均—溫度及成分,并將之結(jié)合盆地?zé)嵫莼�史和埋藏史等資料,對(duì)研究區(qū)油氣藏的形成時(shí)間和成藏期次,以及成巖—成藏耦合關(guān)系做了研究和說明。研究結(jié)果表明,研究區(qū)儲(chǔ)層發(fā)生過一系列成巖作用,經(jīng)歷了長時(shí)間的成巖演化,現(xiàn)如今處于中成巖階段B期。其儲(chǔ)層內(nèi)砂巖顆粒的粒度、分選、磨圓等參數(shù)有其特有的屬性。流體包裹體可見賦存于四種礦物類型和產(chǎn)狀,即切穿石英顆粒及其加大邊的微裂隙和石英顆粒及其加大邊的微裂隙切穿石英顆粒加大邊的微裂隙和石英顆粒加大邊的微裂隙,切穿石英顆粒的微裂隙和石英顆粒的微裂隙,以及方解石膠結(jié)物及其微裂隙里。根據(jù)其組分特征可將其分為四種包裹體,即無機(jī)鹽水包裹體、含氣態(tài)烴鹽水包裹體、氣態(tài)烴包裹體、C02包裹體。流體包裹體的均一溫度分布于60℃～230℃,主峰介于100℃～130℃。研究區(qū)包含三次包裹體捕獲事件,第一次是壓實(shí)作用期間,第二次是膠結(jié)(石英加大)作用期間;第三次是膠結(jié)(鐵方解石膠結(jié))作用期間。通過成巖孔隙演化,可以發(fā)現(xiàn)儲(chǔ)層在石英自生加大作用之后達(dá)到致密,依托此時(shí)期捕獲的流體包裹體溫度,可得出儲(chǔ)層致密時(shí)間是175-165Ma,即中侏羅世,同樣地,通過流體包裹體的均一溫度,可得到其油氣充注時(shí)期是175-135Ma,即中侏羅世-早白堊世。因此成藏模式為在175-165Ma時(shí)期儲(chǔ)層邊致密邊成藏及165-135Ma時(shí)期儲(chǔ)層先致密后成藏;
[Abstract]:As an important oil-gas basin in China, Ordos Basin is rich in oil and gas resources. This paper is based on the project No. 039 of Changyangzhao No. 2014 of PetroChina Changqing Oilfield Branch < the characteristics of fluid inclusions in Upper Paleozoic Box 8 of Ordos Basin and its application in reservoir diagenesis study. Taking the Upper Paleozoic Ke 8 reservoir in Sulige area, Ordos Basin as the research object, with the aid of core observation, casting thin plate, conventional slice, scanning electron microscope, cathodoluminescence, cold-hot stage, laser Raman probe and other analytical and laboratory means, The lithofacies, homogenization temperature and composition of fluid inclusions in reservoir are analyzed emphatically, and combined with the data of thermal evolution history and burial history of the basin, the forming time and time of reservoir formation in the study area are analyzed. And the diagenesis-reservoir coupling relationship is studied and explained. The results show that a series of diagenesis took place in the reservoir in the study area, which has undergone a long period of diagenetic evolution and is now in the B stage of the middle diagenetic stage. The grain size, sorting, grinding and other parameters of sandstone grains in the reservoir have their unique properties. Fluid inclusions can be seen in four mineral types and occurrences, namely, microfissures that cut through quartz particles and their increasing edges, and micro-fissures that cut through the edges of quartz particles and those of quartz particles on the edges of the increasing edges of quartz particles, and micro-fissures on the sides of quartz particles. The microfractures of quartz particles and quartz particles, as well as calcite cements and microcracks are cut through. According to its composition characteristics, it can be divided into four types of inclusions, namely, inorganic salt water inclusions, gaseous hydrocarbon brine inclusions, gaseous hydrocarbon inclusions and gaseous hydrocarbon inclusions. The homogenization temperature of fluid inclusions is distributed at 60 鈩，

本文編號(hào)：1775388