發(fā)布時間：2018-03-20 09:53

  本文選題：巖石熱解　切入點：地震屬性　出處：《石油與天然氣地質(zhì)》2017年01期 　論文類型：期刊論文

【摘要】：正確認識特稠油藏內(nèi)部油品品質(zhì)分布及成因在油藏的勘探評價和開發(fā)設(shè)計階段都具有非常重要的意義�；趲r石熱解-地震多屬性聯(lián)合的方法建立油品品質(zhì)判別模型,對渤海海域遼西凹陷陡坡帶LX構(gòu)造新近系明化鎮(zhèn)組和館陶組的塊狀特稠油藏內(nèi)部油品品質(zhì)進行了三維空間刻畫,結(jié)合流體包裹體資料恢復(fù)的古流體活動史和儲層物性分析結(jié)果,對形成油品品質(zhì)分布特征的成因進行研究。結(jié)果表明:油藏內(nèi)部油品品質(zhì)在垂向上明化鎮(zhèn)組油層頂部比底部差,館陶組油層底部比頂部差;平面上在靠近構(gòu)造高部位相對較差,在斷層附近和油藏邊界部位油品品質(zhì)有所變好。整體上油品品質(zhì)呈現(xiàn)出環(huán)帶狀分布的特征,這種分布特征與原油的"兩期成藏和兩次稠化"過程關(guān)系密切。早期東營組原油經(jīng)歷了成藏第一期和初次稠化過程;晚期東營組經(jīng)歷了初次稠化的油藏遭受破壞在明化鎮(zhèn)組和館陶組再次聚集成藏,并在儲層物性越好的層段,由于進一步發(fā)生了更強的稠化作用,原油的油品品質(zhì)也越差。在成藏第二期內(nèi),新生成的油品品質(zhì)較好的原油沿斷層和油藏邊界充注,導(dǎo)致這些部位的油品品質(zhì)相對變好,并最終形成現(xiàn)今油品品質(zhì)空間分布特征。
[Abstract]:It is very important to correctly understand the distribution and origin of oil quality in the reservoir. Based on the method of rock pyrolysis-seismic multi-attribute combination, the oil quality discrimination model is established. In this paper, the internal oil quality of massive and extra heavy oil reservoirs in the LX structural Neogene Minghuazhen formation and Guantao formation in the steep slope zone of western Liaoning sag in Bohai Sea are characterized in three dimensions. The paleofluid activity history and reservoir physical properties are analyzed in combination with the recovery of fluid inclusion data. The cause of formation of oil product quality distribution is studied. The results show that the oil quality inside the reservoir is worse at the top than at the bottom of the Minghuazhen formation, and the bottom of the Guantao formation is worse than the top, and on the plane, it is relatively poor near the high position of the structure. The quality of oil products has improved in the vicinity of faults and at the boundary of reservoirs. The overall quality of oil products shows the characteristics of annular distribution. This distribution is closely related to the "two-stage accumulation and twice thickening" process of crude oil. The crude oil of the early Dongying formation experienced the first stage and the initial thickening process. In the late Dongying formation, the first thickening reservoir was destroyed and the reservoir was accumulated again in Minghuazhen and Guantao formation, and the better the reservoir physical property was, the stronger thickening action occurred because of the further thickening. The oil quality of crude oil is also worse. In the second stage of reservoir formation, the newly generated crude oil with better quality is filled along the fault and reservoir boundary, which leads to the relative improvement of the oil quality in these parts, and finally forms the spatial distribution characteristics of the oil product quality.
【作者單位】： 中海石油(中國)有限公司天津分公司;
【基金】：國家科技重大專項(2011ZX05023-006)
【分類號】：P618.13

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