發(fā)布時(shí)間：2018-03-22 02:35

  本文選題：高18塊　切入點(diǎn)：蓮花油層　出處：《東北石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：高18塊位于遼河盆地西部凹陷中部高升油田高二三區(qū)南端,開發(fā)目的層為古近系沙河街組蓮花油層,是具有開發(fā)潛力的重點(diǎn)區(qū)塊。由于開發(fā)程度低,對(duì)構(gòu)造特征、儲(chǔ)層特征等缺乏深入認(rèn)識(shí),以致本區(qū)開發(fā)工作進(jìn)展遲緩。為了解決關(guān)鍵問題—構(gòu)造、儲(chǔ)層問題,作者運(yùn)用陸相沉積盆地沉積學(xué)、層序地層學(xué)及三維地震精細(xì)解釋的新方法、新技術(shù)有效開展了高18塊蓮花油層精細(xì)地質(zhì)描述的研究工作,結(jié)果表明:高18塊整體是正斷層所復(fù)雜化的背斜構(gòu)造,主要以北東向斷層為主干斷裂,其控制該區(qū)構(gòu)造形態(tài),此外還發(fā)育了一系列北西、近東西向斷裂,對(duì)構(gòu)造起分割作用;本區(qū)主要為水下扇沉積,物源主要來自東北方向,儲(chǔ)層巖性主要為砂礫巖,粘土礦物含量高,以蒙皂石為主,總體呈現(xiàn)弱堿敏、中等偏強(qiáng)水敏、強(qiáng)酸敏的特點(diǎn);蓮花油層儲(chǔ)層物性縱向上5砂體好于1-4砂體,平面上區(qū)塊中部物性最好,東部相對(duì)較差。同時(shí),運(yùn)用多方法開展剩余油分布規(guī)律研究表明,剩余油縱向主要分布在水下分流河道砂體正韻律層上部;平面上主要分布在注采不完善區(qū)、動(dòng)用程度差層位、斷層控制區(qū)、井控程度低區(qū)。最后,本文結(jié)合巖心分析、動(dòng)態(tài)監(jiān)測(cè)及剩余油研究搞清了制約油藏平面及縱向開發(fā)效果的關(guān)鍵因素,確定了“主體部位注水調(diào)驅(qū)、東部壓裂改造輔以高壓注汽的方式提高儲(chǔ)量動(dòng)用程度”的開發(fā)調(diào)整策略,部署部分開發(fā)井,目前通過新井逐步實(shí)施,油藏取得較好開發(fā)效果。
[Abstract]:Gao18 block is located at the southern end of Gaosheng3 area of Gaosheng Oilfield in the western sag of Liaohe Basin. The development target layer is Lianhua oil reservoir of Shahejie formation of Paleogene system, which is a key block with development potential. In order to solve the key problems such as structure and reservoir problems, the authors use a new method of continental sedimentary basin sedimentology, sequence stratigraphy and 3D seismic fine interpretation. The new technique has effectively carried out the research work of fine geological description of Lianhua reservoir in Gao18 block. The results show that Gao18 block is an anticline structure complicated by normal fault, and the main fault is the main fault in the north to east direction, which controls the structural form in this area. In addition, a series of NW, near EW-trending faults have been developed, which play a role in the division of the structure. This area is mainly composed of subaqueous fan deposits, the source mainly comes from the northeast direction, the reservoir lithology is mainly sandy gravel, the clay mineral content is high, and the smectite is the main source. The reservoir physical properties of Lianhua reservoir are better than 1-4 sand body in longitudinal direction, the middle part of the block is the best, and the eastern part is relatively poor, the characteristics of the reservoir are weak alkali-sensitive, moderate strong water sensitivity and strong acid sensitivity, and the reservoir physical properties of Lianhua oil reservoir are better than 1-4 sand body in the longitudinal direction. The study on the distribution of residual oil by multiple methods shows that the remaining oil is mainly distributed in the upper part of positive rhythm layer of sand body in underwater distributary channel, in the area of imperfect injection-production, in the position of poor production degree, in the fault control area, and in the vertical distribution of remaining oil in the subaqueous distributary channel. Finally, combined with core analysis, dynamic monitoring and remaining oil research, the key factors restricting the horizontal and longitudinal development effect of the reservoir are found out, and the "water flooding and flooding at the main part of the reservoir" is determined. In the eastern part of China, the development adjustment strategy of fracturing and revamping with high pressure steam injection to improve the production degree of reserves is used to deploy part of the developed wells. At present, through the implementation of the new wells step by step, the reservoir has achieved better development results.
【學(xué)位授予單位】：東北石油大學(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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