本文選題：低滲砂巖儲層　切入點：注水開發(fā)　出處：《西南石油大學》2015年碩士論文　論文類型：學位論文

【摘要】：隨著我國對油氣資源需求的日益增長,低滲透油氣資源已經(jīng)成為我國油氣勘探開發(fā)的重點之—。由于低滲透儲層物性差、產(chǎn)能低,在開發(fā)的過程中容易受到損害,這就對油氣開采的各個環(huán)節(jié)都提出了很高的要求。因此,在對低滲透儲層進行注水開發(fā)的過程中采取有效的儲層保護措施對油田的正常生產(chǎn)具有十分重要的意義。 本文在對國內(nèi)外資料進行充分調(diào)研的基礎上,總結了油田注水開發(fā)過程中儲層損害的機理,并以渭北長3儲層為研究對象,通過對該儲層巖心進行孔滲測試分析、黏土礦物分析、掃描電鏡分析、壓汞分析,得到了該儲層的物性參數(shù)及其潛在損害因素。并利用注入水和地層水離子成分分析結果,對該儲層的結垢情況進行了預測。根據(jù)儲層敏感性實驗結果得知,該儲層的主要損害類型有：水敏損害、鹽敏損害以及應力敏感損害。 本文通過注水水質對巖心滲透率損害評價實驗,對注入水中的懸浮顆粒濃度、懸浮顆粒粒徑和含油量對儲層的損害機理和規(guī)律進行分析和歸納。同時,采用Design-Expert軟件對各指標的相關性進行評價,并根據(jù)注水水質對巖心損害正交實驗結果得到了渭北長3儲層注水水質推薦指標。介紹了懸浮顆粒對儲層的內(nèi)部堵塞模型,并通過對實驗數(shù)據(jù)進行擬合確定了模型中的參數(shù),得到實驗條件下超低滲儲層內(nèi)部顆粒堵塞回歸模型,且所得模擬曲線與實際曲線吻合情況良好。 綜合黏土防膨劑、阻垢劑的類型和濃度優(yōu)選實驗結果及效果評價實驗數(shù)據(jù),并結合注水水質對巖心滲透率損害評價實驗結果,制定了渭北長3儲層注水方案,為渭北油田的注水開發(fā)提供參考。
[Abstract]:With the increasing demand for oil and gas resources in China, low permeability oil and gas resources have become the focus of oil and gas exploration and development in China. Due to the poor physical properties and low productivity of low permeability reservoirs, they are vulnerable to damage in the process of development. Therefore, it is very important to take effective reservoir protection measures in the process of water injection development of low permeability reservoirs. Based on the investigation of domestic and foreign data, this paper summarizes the mechanism of reservoir damage in the process of oilfield waterflooding development, and takes Weibeichang 3 reservoir as the research object, through the pore and permeability test analysis of the reservoir core. Clay mineral analysis, scanning electron microscope analysis, mercury injection analysis, physical parameters and potential damage factors of the reservoir are obtained, and the results of ion composition analysis of injected water and formation water are used. According to the experimental results of reservoir sensitivity, the main damage types of the reservoir are water sensitive damage, salt sensitive damage and stress sensitive damage. In this paper, the damage mechanism and regularity of suspended particle concentration, suspended particle size and oil content in injected water to reservoir are analyzed and summarized by the experiment of water injection water damage to core permeability. The correlation of each index is evaluated by using Design-Expert software, and the recommended water quality index of water injection in Weibei Chang 3 reservoir is obtained according to the orthogonal test results of water injection water quality to core damage, and the internal plugging model of suspended particles to reservoir is introduced. The parameters of the model are determined by fitting the experimental data, and the regression model of particle plugging in the ultra-low permeability reservoir is obtained under the experimental conditions, and the simulation curve is in good agreement with the actual curve. Based on the experimental results of optimum selection of clay anti-swelling agent and scale inhibitor and the experimental data of effectiveness evaluation, combined with the experimental results of water injection water quality assessment of core permeability damage, the water injection scheme of Weibeichang 3 reservoir was established. It provides a reference for water injection development in Weibei Oilfield.
【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】：TE357.6;TE358

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