本文選題：致密油 + 形成條件��； 參考：《石油學報》2017年07期

【摘要】：通過大量巖心、巖屑和原油樣品測試分析,結合456口井的生產(chǎn)動態(tài)數(shù)據(jù),明確了四川盆地侏羅系4套主要烴源巖的生烴潛力和3套主力產(chǎn)層的成藏特征,指出涼高山組、大安寨段和東岳廟段烴源巖以生油為主,珍珠沖段烴源巖以生氣為主,富有機質(zhì)烴源巖控制致密油甜點分布,工業(yè)油井絕大多數(shù)位于TOC1.2%的優(yōu)質(zhì)烴源巖區(qū),微米級孔喉是致密油有效儲集空間,裂縫是開采初期高產(chǎn)的關鍵。四川盆地侏羅系致密油整體呈現(xiàn)油質(zhì)輕、氣油比高、異常高壓的特點,有利于致密油流動和產(chǎn)出。采用小面元法、資源豐度類比法、EUR類比法和有機碳法4種方法,評價四川盆地侏羅系致密油地質(zhì)資源量在(20~30)×10~8t。通過資源富集主控因素分析,建立了四川盆地致密油地質(zhì)資源評價分級標準,運用小面元法計算Ⅰ類地質(zhì)資源量為16.11×10~8t,Ⅱ類地質(zhì)資源量為4.77×10~8t,Ⅲ類地質(zhì)資源量為2.89×10~8t。預測大安寨段在南充—遂寧一帶及梁平以東勘探潛力最大,涼高山組在廣安—南充—遂寧—儀隴一帶最為有利,東岳廟段在廣安—遂寧一線以南具有較好的勘探前景。
[Abstract]:Through the testing and analysis of a large number of cores, cuttings and crude oil samples, combined with the production dynamic data of 456 wells, the hydrocarbon generation potential of 4 sets of main hydrocarbon source rocks of Jurassic system in Sichuan Basin and the reservoir forming characteristics of three main production zones are determined, and the Liangshan formation is pointed out. The source rocks in the Da'anzhai and Dongyumiao sections are mainly oil source rocks, while the source rocks in the Zhuzhulong formation are mainly gas generating rocks. The organic matter rich source rocks control the distribution of dense oil desserts. Most of the industrial oil wells are located in the high quality source rock area of TOC 1.2%. The micrometer pore throat is the effective reservoir space of dense oil, and the crack is the key to high production in the early stage of exploitation. The whole dense oil of Jurassic in Sichuan basin is characterized by light oil quality, high gas-oil ratio and abnormal high pressure, which is favorable for tight oil flow and production. Using four methods, small area method, resource abundance analogy method, EUR analogy method and organic carbon method, the geological resources of dense oil of Jurassic in Sichuan Basin are evaluated at 20 ~ 30) 脳 10 ~ (8) t. Based on the analysis of the main controlling factors of resource enrichment, the evaluation and classification criteria of dense oil geological resources in Sichuan Basin are established. By using the small panel method, the geological resources of class 鈪，

本文編號：2017986