發(fā)布時間：2018-06-07 11:06

  本文選題：大孔道 + 沉積砂體��； 參考：《東北石油大學(xué)》2016年碩士論文

【摘要】：隨著油田開發(fā)的不斷深入,儲層孔、滲等物性也隨之被改造,形成孔道,導(dǎo)致低效或無效循環(huán)嚴(yán)重。因此有必要開展儲層內(nèi)部構(gòu)型及大孔道分布規(guī)律研究,進(jìn)一步認(rèn)清油水井連通狀況和層內(nèi)剩余油分布規(guī)律,為有效治理低效無效循環(huán)帶和進(jìn)一步提高一類油層采收率提供理論指導(dǎo)和技術(shù)支持。本次通過對南一區(qū)中塊儲層沉積特征、厚油層內(nèi)部構(gòu)型和沉積砂體大孔道物性參數(shù)特征研究,最終建立了沉積砂體高滲通道識別、劃分及表征方法,取得以下成果:一是通過對南一區(qū)中塊PⅠ2小層兩個沉積單元內(nèi)曲流河道砂體內(nèi)部的6個點(diǎn)壩砂體進(jìn)行精細(xì)解剖,夾層的平面展布分布形態(tài)為同心圓型和扇型兩種,夾層的剖面分布形態(tài)為上緩中陡下緩;二是在對取心井資料研究分析的基礎(chǔ)上,基于井的測井曲線特征建立了河道砂體高滲通道參數(shù)PDKD厚與PDKD薄,結(jié)合滲透率分布、有效砂體厚度、高水淹厚度等參數(shù)建立了大孔道識別方法,并根據(jù)其特征劃分為四種類型;三是通過對高滲通道在河道單砂體內(nèi)部的發(fā)育特征研究,建立了高滲通道平面表征方法,識別了典型沉積單元河道砂體高滲通道;四是通過對南一區(qū)中塊低初始粘度調(diào)剖7個井組調(diào)剖效果分析得出,調(diào)剖方向占高升通道連通方向比例大,且調(diào)剖有效厚度占總連通有效厚度比例大的井效果好。
[Abstract]:With the development of oil field, reservoir porosity, permeability and other physical properties are reformed, forming pores, resulting in inefficient or ineffective circulation. Therefore, it is necessary to study the internal configuration of reservoir and the distribution law of large pore channels, to further recognize the connectivity of oil and water wells and the distribution law of remaining oil in the reservoir. It provides theoretical guidance and technical support for the effective treatment of inefficient and ineffective cycle zones and the further improvement of oil recovery in a class of reservoirs. Based on the study of sedimentary characteristics of middle block reservoir, internal configuration of thick reservoir and physical parameters of large channel of sedimentary sand body, the method of identifying, dividing and characterizing high permeability channel of sedimentary sand body is established in this paper. The main results are as follows: first, through the fine dissection of six point bar sandbodies inside the meandering channel sand bodies in the two sedimentary units of P 鈪，

本文編號：1990956