本文選題：采收率　切入點：油水井數比　出處：《西南石油大學》2015年碩士論文

【摘要】：尕斯N區(qū)塊于1990年10月投入開發(fā),截至2014年4月底已經進入高含水期,油藏地質特征復雜,儲層砂體分布分散,連片性差,造成剩余油分布復雜,認識剩余油和開采剩余油是油藏開發(fā)調整的重點。研究剩余油的方法有很多,本文主要采用油藏數值模擬方法模擬剩余油分布,并通過數值模擬方法篩選出適合本油藏的開采剩余油的方案,具體的研究方法和相應的成果為： (1)從儲層物性、潤濕性和非均質性了解區(qū)塊的地質特征,通過采收率、存水率、水驅指數、體積波及系數和含水率的分析對油藏的開發(fā)效果作出評價,從中發(fā)現開發(fā)效果較差的油層組,通過對無因次采液采油指數分析把握住油藏的提液時機,分析油藏的合理油水井數比及合理井網密度為井網加密措施提供理論基礎。 (2)采用三維地質建模軟件Petrel建立油藏的地質模型,模型分為4個油層組58個小層。利用Eclipse黑油模擬器再現油藏23年的生產歷史,根據剩余油的分布情況分析剩余油的富集成因并作出剩余油水淹平面圖,根據水淹平面圖確定油水井的補孔、堵水和調剖措施,結合剩余油儲量豐度圖給出加密井的井位。 (3)優(yōu)化油藏的注采比,確定一個合理的值,在此基礎上設計不同的單井措施方案、井網加密方案和增注提液方案,從2014年4月預測到2025年,根據油藏累計產油量、油藏含水率和油藏地層壓力選出最佳的挖潛方案。 (4)主要創(chuàng)新點：采用油水相對滲透率比值擬合法對油藏采收率進行篩選,選出能反映油藏實際的采收率值；利用油水相對滲透率表示油水井數比公式。
[Abstract]:Gasi N block was put into development in October 1990. By the end of April 2014, it had entered a high water cut period. The geological characteristics of the reservoir are complex, the distribution of reservoir sand bodies is dispersed, and the continuity is poor, resulting in the complex distribution of remaining oil.Understanding remaining oil and producing remaining oil are the key points of reservoir development adjustment.There are many methods to study residual oil. This paper mainly uses reservoir numerical simulation method to simulate the distribution of remaining oil, and through the numerical simulation method to screen out the scheme suitable for the remaining oil production in this reservoir. The specific research methods and corresponding results are as follows:1) to understand the geological characteristics of the block from the reservoir physical properties, wettability and heterogeneity, and to evaluate the development effect of the reservoir through the analysis of oil recovery, water storage rate, water drive index, volume sweep coefficient and water cut.It is found that the reservoir group with poor development effect. Through the analysis of dimensionless recovery oil recovery index, the time of oil extraction is grasped, and the reasonable oil-water well number ratio and reasonable well pattern density are analyzed to provide the theoretical basis for the well pattern infilling measures.2) the geological model of the reservoir is established by using the 3D geological modeling software Petrel. The model is divided into 58 sub-layers of 4 reservoirs.The Eclipse black oil simulator is used to reproduce the production history of the reservoir for 23 years. According to the distribution of remaining oil, the causes of remaining oil enrichment are analyzed and the residual oil flooding plan is made. According to the water flooding plan, the measures of filling hole, plugging water and profile control are determined.The well location of infill well is given according to the abundance diagram of remaining oil reserves.On the basis of optimizing the injection-production ratio of oil reservoir, determining a reasonable value, designing different single well measures, well pattern infilling scheme and increasing injection extraction scheme, from April 2014 to 2025, according to the cumulative oil production of the reservoir,Reservoir water cut and reservoir formation pressure are selected to select the best way to tap potential.The main innovation points are as follows: oil / water relative permeability ratio fitting method is used to screen oil recovery factor, and oil / water relative permeability is used to express oil / water well number ratio formula.
【學位授予單位】：西南石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE327

【參考文獻】

相關期刊論文 前10條

1 王群超,夏欣,張欣;阿北安山巖裂縫性油藏的周期注水開發(fā)[J];斷塊油氣田;2000年03期

2 相天章,于濤,溫靜,汪浩;累積存水率曲線研究及應用探討[J];斷塊油氣田;2001年04期

3 鄧新穎,殷旭東,尹承棣,白群麗,張中順,李凌云;特高含水期剩余油分析方法[J];斷塊油氣田;2004年05期

4 馮建偉,楊少春,楊兆林;勝坨油田二區(qū)東三段微型構造與剩余油分布[J];斷塊油氣田;2005年01期

5 王任一;;基于最大熵的巖心水驅波及系數求取方法[J];斷塊油氣田;2008年03期

6 楊春梅;;特高含水期油井補孔選井選層標準探討[J];長江大學學報(自科版);2013年14期

7 鄭金定;謝向威;陳Z，

本文編號：1709094