發(fā)布時(shí)間：2018-05-23 14:41

  本文選題：長2油藏 + 油藏描述　； 參考：《西安石油大學(xué)》2015年碩士論文

【摘要】：鄂爾多斯盆地是我國最早發(fā)現(xiàn)油田的盆地之一,也是我國第二大含油氣盆地,油氣資源豐富,鄂爾多斯盆地延長組為一套坳陷型內(nèi)陸碎屑湖盆。豐富川位于鄂爾多斯盆地陜北斜坡東部斜坡的中南段,油田自2002年投入開發(fā),2004年最高時(shí)年產(chǎn)量30萬噸,2009年產(chǎn)油量下降到6.7萬噸,2010年原油產(chǎn)量6萬噸。隨著開發(fā)不斷推進(jìn),在有限新的資源區(qū)塊問題下,對(duì)原有老區(qū)塊再認(rèn)識(shí)、精管理是油田穩(wěn)產(chǎn)的必要技術(shù)方向。本文選取豐富川油田典型井區(qū)1230長2油藏為研究對(duì)象,從該區(qū)特低滲透儲(chǔ)層地質(zhì)評(píng)價(jià)分析入手,開展研究區(qū)目的層段地層、構(gòu)造、沉積微相、成巖相帶、砂體展布、油層有效厚度、地質(zhì)儲(chǔ)量分布研究,最終通過數(shù)值模擬研究并確定研究區(qū)長2儲(chǔ)層剩余油分布。從而為有效地對(duì)剩余油分布富集區(qū)進(jìn)行調(diào)整挖潛,提供重要保障。研究認(rèn)為:1230井區(qū)為巖性油氣藏,構(gòu)造作用對(duì)油藏控制不明顯,為三角洲平原沉積,其中分流河道是油氣聚集的有利場所,研究區(qū)技術(shù)可采儲(chǔ)量約為24.39×104t。根據(jù)地質(zhì)建模與油藏?cái)?shù)值模擬結(jié)果,研究區(qū)長21-2仍是主要的富集區(qū),長21-3、長21-4次之;長21-1剩余油較少。
[Abstract]:The Ordos Basin is one of the earliest oilfields discovered in China and the second largest oil and gas bearing basin in China with abundant oil and gas resources. The Yanchang formation of the Ordos Basin is a set of depression type inland clastic lacustrine basin. The rich Sichuan is located in the middle and south section of the eastern slope of northern Shaanxi slope in Ordos Basin. The oil field was put into development in 2002, the annual output in 2004 was 300000 tons, the oil production decreased to 67000 tons in 2009, and the crude oil output in 2010 was 60,000 tons. With the development advancing continuously, under the limited new resource block problem, it is the necessary technical direction of stable production of oil field to recognize the original old block again. This paper selects 1230 Chang 2 reservoir in the typical well area of rich Sichuan Oilfield as the research object, starting with the geological evaluation and analysis of the ultra-low permeability reservoir in this area, develops the stratigraphy, structure, sedimentary microfacies, diagenetic facies belt and sand body distribution of the target formation, structure, sedimentary microfacies, diagenetic facies and sand body in the study area. The effective thickness of reservoir and the distribution of geological reserves are studied. Finally, the remaining oil distribution of Chang 2 reservoir is determined by numerical simulation. Thus, it provides an important guarantee for the adjustment and tapping of potential in the rich area of remaining oil distribution. It is considered that the area of well No. 1230 is a lithologic reservoir, and the tectonic action is not obvious to the reservoir. It is a delta plain deposit. The distributary channel is a favorable place for oil and gas accumulation, and the technical recoverable reserve in the study area is about 24.39 脳 10 ~ (4) t. According to the results of geological modeling and reservoir numerical simulation, Chang 21-2 is still the main rich area, Chang 21-3, Chang 21-4, and Chang 21-1 have less remaining oil.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.13;TE327

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本文編號(hào)：1925214