本文選題：潿洲區(qū)塊 + 敏感性評價�。� 參考：《長江大學(xué)》2015年碩士論文

【摘要】：儲層研究一直是油氣勘探開發(fā)的重點,對于開發(fā)階段的儲層研究而言,儲集空間的類型、非均質(zhì)特性以及宏觀與微觀特征皆為儲層研究開發(fā)的三大核心問題。但隨著油氣田開發(fā)的深入,儲層敏感性研究日益成為主導(dǎo)采收率的重要因素,該問題使得地質(zhì)開發(fā)工作者感到越來越棘手。由此儲層敏感性研究日益成為開發(fā)階段儲層研究的另一核心問題。中國海油南部西部石油管理局(中海石油有限公司湛江分公司)根據(jù)涸洲11-4N油田深層砂巖儲層特點,通過對該區(qū)域儲層基本地質(zhì)特征的研究,重點對各個層位的儲層潛在損害源分析。在此基礎(chǔ)上對賈敏和水鎖效應(yīng)的灰色關(guān)聯(lián)度進(jìn)行權(quán)重分析并篩選其中主要影響因素。探討抑制儲層水鎖傷害解除方法,建立有效的水鎖傷害預(yù)防管理模式。通過對潿洲11-4N油田流一段、流二段及流三段室內(nèi)在高溫高壓下敏感性實驗評價,從中得出該區(qū)域存在中等偏弱速敏及酸敏、中等偏強(qiáng)水敏及堿敏、賈敏和應(yīng)力敏在該區(qū)塊較強(qiáng)。研究層段在埋藏過程中處于一種富K+的堿性環(huán)境中伊/蒙混層充分發(fā)育,主要以孔隙搭橋形式產(chǎn)出這些因素都會引發(fā)較強(qiáng)水敏效應(yīng)。微裂縫的普遍發(fā)育是誘發(fā)應(yīng)力敏和賈敏的關(guān)鍵原因。根據(jù)相應(yīng)研究成果提出行之有效儲層保護(hù)措施。本文獲得了以下主要成果：(1)通過對粘土礦物產(chǎn)狀特征及巖心孔喉特征分析,了解它們與流體之間可能發(fā)生的各種物理和化學(xué)變化及由此造成的地層傷害。(2)利用流動性實驗室評價技術(shù),對研究區(qū)砂巖樣品進(jìn)行“五敏”測試并結(jié)合生產(chǎn)中遇到實際問題,總結(jié)該區(qū)儲層的敏感性特征。該區(qū)砂巖儲層敏感性傷害類型主要為水敏和速敏,其余敏感性傷害程度較低。(3)在數(shù)據(jù)處理過程后,從影響該區(qū)塊的隨機(jī)因子中權(quán)衡相關(guān)系數(shù),對水鎖和賈敏效應(yīng)關(guān)聯(lián)度及權(quán)重進(jìn)行分析,優(yōu)選出重要特征參數(shù)和重要影響因子。(4)儲層傷害預(yù)防措施的優(yōu)化,緊密聯(lián)系該區(qū)塊實際情況進(jìn)行粘土礦物防膨處理,,為油田開發(fā)對策的制訂提供重要依據(jù)。
[Abstract]:Reservoir research has always been the focus of oil and gas exploration and development. For reservoir research in the stage of development, the types of reservoir space, heterogeneous characteristics and macro and micro characteristics are the three core problems in reservoir research and development.However, with the development of oil and gas fields, the study of reservoir sensitivity is becoming an important factor leading to oil recovery, which makes geological development workers feel more and more difficult.As a result, reservoir sensitivity is becoming another core issue in reservoir development.According to the characteristics of deep sandstone reservoir in Diangzhou 11-4N oilfield, the China National Offshore Oil South Western Petroleum Administration Bureau (Zhanjiang Branch of China National Offshore Oil Co., Ltd.) has studied the basic geological characteristics of the reservoir in this area.Emphasis is placed on the analysis of potential sources of reservoir damage at each horizon.On this basis, the weight of the grey relational degree of Jia Min and the water lock effect was analyzed and the main influencing factors were screened out.This paper discusses the methods of preventing reservoir water lock damage and establishes an effective water lock damage prevention and management model.The sensitivity of the first section, the second stage and the third member of Weizhou 11-4N oil field under high temperature and high pressure is evaluated. The results show that there are moderate weak velocity sensitivity and acid sensitivity, moderate strong water sensitivity and alkali sensitivity in this area, while Jia Min and stress sensitivity are stronger in this area.The study layer segment is in a K rich alkaline environment in which the Iraq / monolayer is fully developed. These factors are mainly produced in the form of pore bypass. These factors will lead to strong water sensitivity effect.The common development of microcracks is the key cause of inducing stress sensitivity and Jia Min.According to the corresponding research results, effective reservoir protection measures are put forward.In this paper, the following main achievements are obtained: (1) based on the analysis of the characteristics of clay mineral occurrence and pore throat in the core,Aware of the various physical and chemical changes that may occur between them and the fluid and the resulting formation damage. (2) using fluidity laboratory evaluation techniques to test sandstone samples in the study area for "five sensitivities" and to meet practical problems in combination with production,The sensitivity characteristics of reservoir in this area are summarized.The sensitive damage types of sandstone reservoirs in this area are mainly water sensitivity and speed sensitivity, while the others are relatively low. After data processing, correlation coefficients are weighed from the random factors affecting the block.The correlation degree and weight of water lock and Jamin effect are analyzed, and the important characteristic parameters and important influence factor. 4) the reservoir damage prevention measures are optimized.In close connection with the actual situation of the block, the clay minerals are treated against swelling, which provides an important basis for the formulation of oilfield development countermeasures.
【學(xué)位授予單位】：長江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE31

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本文編號：1767782