發(fā)布時(shí)間：2018-10-23 17:22

【摘要】：剩余油研究是油田開(kāi)發(fā)中后期油藏管理的主要任務(wù),是實(shí)現(xiàn)“控水穩(wěn)油”開(kāi)發(fā)戰(zhàn)略的重要手段,隨著勘探難度和成本的增加,提高原油采收率就顯得更加迫切和重要,眾多油田開(kāi)發(fā)實(shí)踐表明,水驅(qū)原油采收率一般只有30%左右,還有三分之二的剩余石油儲(chǔ)量仍然殘留在地下,因此準(zhǔn)確地評(píng)價(jià)剩余油飽和度對(duì)油田開(kāi)發(fā)中后期調(diào)整挖潛及三次采油方案的實(shí)施至關(guān)重要,剩余油及挖潛技術(shù)研究應(yīng)用技術(shù)前景廣闊。本文根據(jù)C601x塊生產(chǎn)動(dòng)態(tài)數(shù)據(jù)、測(cè)試分析資料,結(jié)合前期精細(xì)油藏描述研究成果基礎(chǔ)上從目前開(kāi)發(fā)層系、井網(wǎng)、井距適應(yīng)性評(píng)價(jià)、細(xì)分開(kāi)發(fā)層系研究、井網(wǎng)重組研究三個(gè)方面開(kāi)展分析研究。在完善地質(zhì)模型的基礎(chǔ)上,應(yīng)用相控建模技術(shù)建立研究區(qū)重點(diǎn)塊數(shù)值模型。利用動(dòng)態(tài)分析法和數(shù)值模擬法深入研究層內(nèi)、層間及平面剩余油分布規(guī)律,建立不同沉積特征剩余油分布模式,以地質(zhì)劃分的基本單元,從水淹級(jí)別、剩余油飽和度、剩余可采儲(chǔ)量豐度等幾個(gè)方面定性、定量描述剩余油分布,總結(jié)剩余油分布規(guī)律,深入分析影響剩余油分布的主要因素,確定剩余油富集區(qū)域。開(kāi)展細(xì)分層系、注采井網(wǎng)重組、局部水平井挖潛為主要內(nèi)容的二次開(kāi)發(fā)調(diào)整研究,并比對(duì)技術(shù)及經(jīng)濟(jì)指標(biāo)提出區(qū)塊二次開(kāi)發(fā)部署建議,指導(dǎo)區(qū)塊新井部署,以提高區(qū)塊儲(chǔ)量動(dòng)用程度,改善區(qū)塊開(kāi)發(fā)效果。
[Abstract]:The research of remaining oil is the main task of reservoir management in the middle and late stage of oilfield development and an important means to realize the development strategy of "controlling water and stabilizing oil". With the increase of exploration difficulty and cost, it becomes more urgent and important to improve oil recovery. Many oilfield development practices show that the oil recovery rate of water drive crude oil is generally only about 30%, and 2/3 of the remaining oil reserves remain underground. Therefore, accurate evaluation of residual oil saturation is of great importance to the implementation of adjustment and tertiary oil recovery in the middle and late stage of oilfield development, and the research and application of remaining oil and potential tapping technology have broad prospects. Based on the production dynamic data of C601x block, the test and analysis data, combined with the previous fine reservoir description research results, this paper studies the adaptability evaluation of the present development layer, well pattern, well spacing, and the subdivision development layer system. Well pattern reorganization research carried out three aspects of analysis and research. Based on the improvement of geological model, the numerical model of key blocks in the study area is established by using phase control modeling technology. Using dynamic analysis method and numerical simulation method, the distribution law of residual oil in layer, interlayer and plane is deeply studied, and the distribution model of residual oil with different sedimentary characteristics is established. According to the basic units of geological division, the remaining oil saturation is obtained from the water flooding level and the saturation of residual oil. The remaining oil distribution is described quantitatively, the distribution law of remaining oil is summarized, the main factors affecting the remaining oil distribution are analyzed in depth, and the remaining oil enrichment area is determined. Carry out the secondary development adjustment research of subdivision layer system, injection-production pattern recombination, local horizontal well tapping as the main content, and compare the technical and economic indexes to put forward the suggestion of block secondary development deployment, and guide the new well deployment of block. In order to improve the level of block reserves production, improve the block development effect.
【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】：2017
【分類(lèi)號(hào)】：TE327
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本文編號(hào)：2289952