發(fā)布時(shí)間：2018-06-03 09:43

  本文選題：頁巖油 + 構(gòu)造裂縫��； 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：松遼盆地古龍地區(qū)青山口組泥頁巖儲層構(gòu)造裂縫十分發(fā)育,裂縫的發(fā)育特征研究對于本區(qū)頁巖油的勘探開發(fā)具有重要意義。本文利用野外露頭、巖心、薄片等資料,對泥頁巖裂縫的發(fā)育類型進(jìn)行了劃分,分析了泥頁巖裂縫的發(fā)育特征、形成機(jī)理及主控因素。利用有限元數(shù)值模擬技術(shù)的裂縫分布規(guī)律預(yù)測以及前人的研究成果,以巖心裂縫線密度等參數(shù)為主要依據(jù),結(jié)合基于斷層分布的分形幾何預(yù)測方法,對泥頁巖儲層裂縫分布規(guī)律進(jìn)行綜合預(yù)測。研究區(qū)泥頁巖主要發(fā)育有四種類型裂縫,包括構(gòu)造裂縫、超壓裂縫、成巖裂縫和滑脫縫,其中以超壓促進(jìn)作用形成的構(gòu)造裂縫為主。走向分別為NNW-SSE向、NE-SW向、NEE-SWW向。構(gòu)造裂縫的形成與分布受有機(jī)碳含量、巖石脆性指數(shù)、異常高壓、斷層等因素影響。區(qū)域構(gòu)造演化和斷裂活動分析表明該地區(qū)主要經(jīng)歷了三期古構(gòu)造應(yīng)力場作用。結(jié)合包裹體測試結(jié)果與埋藏史-熱史分析數(shù)據(jù),表明構(gòu)造裂縫主要形成于青山口組末期-姚家組、嫩一二段以及明水組沉積末期。通過本區(qū)油氣成藏期次和裂縫形成時(shí)間的對比,構(gòu)造裂縫是重要的油氣儲集空間和滲流通道。構(gòu)造裂縫綜合預(yù)測結(jié)果表明,儲層裂縫可以劃分為四級發(fā)育單元,其中,Ⅰ級和Ⅱ級為裂縫發(fā)育區(qū),高產(chǎn)井均位于Ⅰ級和Ⅱ級裂縫發(fā)育區(qū)內(nèi),當(dāng)裂縫密度小于0.8m/m~2時(shí),產(chǎn)量較低。
[Abstract]:The structural fractures of shale reservoir of Qingshankou formation in Gulong area of Songliao Basin are well developed, and the study on the development characteristics of fractures is of great significance for the exploration and development of shale oil in this area. Based on the data of outcrop, core and thin slice in the field, the development types of shale fractures are divided, and the development characteristics, formation mechanism and main controlling factors of shale fractures are analyzed in this paper. Using the finite element numerical simulation technology to predict the fracture distribution law and the previous research results, taking the core fracture linear density as the main basis, combining the fractal geometry prediction method based on the fault distribution. The fracture distribution law of shale reservoir is forecasted synthetically. There are mainly four types of fractures in the shale in the study area, including structural fractures, overpressure fractures, diagenetic fractures and slippage fractures, among which the structural fractures promoted by overpressure are the main ones. The strike is NNW-SSE direction, NE-SW direction, and NEE-SWW direction, respectively. The formation and distribution of structural fractures are affected by organic carbon content, rock brittleness index, abnormal high pressure, fault and so on. The analysis of regional tectonic evolution and fault activity shows that the area has experienced three periods of paleotectonic stress field. Combined with the results of inclusions test and burial history-thermal history analysis, it is shown that the structural fractures were mainly formed at the end of Qingshankou formation, Yao Jia formation, Nenyi and second member and the late depositional stage of Mingshui formation. Based on the comparison of the times of oil and gas accumulation and the time of fracture formation in this area, the structural fracture is an important hydrocarbon reservoir space and percolation channel. The comprehensive prediction results of structural fractures show that the reservoir fractures can be divided into four development units, among which, class 鈪，

本文編號：1972331