本文選題：高含水　切入點(diǎn)：油氣識(shí)別　出處：《西南石油大學(xué)》2017年碩士論文

【摘要】：隨著注水開發(fā)的持續(xù)進(jìn)行,我國(guó)許多油田進(jìn)入高含水開發(fā)階段。長(zhǎng)期注水導(dǎo)致儲(chǔ)層非均質(zhì)程度加劇,但剩余油分布仍然有一定的規(guī)律,原有的注采井網(wǎng)和層系的劃分已不能滿足現(xiàn)階段的開發(fā)需求。因此,進(jìn)行高含水期井網(wǎng)的調(diào)整和層系的優(yōu)化,對(duì)促進(jìn)油田的高效開發(fā)具有重要的作用。本文針對(duì)H油藏油水分布規(guī)律不明確、注采井網(wǎng)不完善、含水上升快、開發(fā)區(qū)上部水淹嚴(yán)重等問題,以H油藏開發(fā)區(qū)為研究對(duì)象,利用大量的鉆井、測(cè)井及生產(chǎn)動(dòng)態(tài)等資料,進(jìn)行油氣層識(shí)別研究;在地質(zhì)建模的基礎(chǔ)上,對(duì)區(qū)塊剩余油分布特征進(jìn)行了研究;運(yùn)用模糊數(shù)學(xué)中的模糊聚類分析方法、油藏工程方法及油藏?cái)?shù)值模擬方法,開展了層系優(yōu)化、井網(wǎng)調(diào)整研究,最終編制了二次井網(wǎng)重構(gòu)方案,具體內(nèi)容如下:(1)運(yùn)用曲線重疊法和交會(huì)圖法,對(duì)H油藏的油氣層進(jìn)行了重新識(shí)別,重新劃分了油氣界面,為儲(chǔ)層三維精細(xì)地質(zhì)建模奠定基礎(chǔ)。(2)在對(duì)測(cè)井、地質(zhì)等資料充分認(rèn)識(shí)的基礎(chǔ)上,采用相控方法建立區(qū)塊三維地質(zhì)模型,利用抽稀檢驗(yàn)對(duì)地質(zhì)模型進(jìn)行檢驗(yàn),在此基礎(chǔ)上粗化成合適的油藏?cái)?shù)值模型。(3)完成了全區(qū)及單井的生產(chǎn)歷史擬合工作,并在此基礎(chǔ)上開展了剩余油分布規(guī)律研究,歸納出5種剩余油分布控制類型,為進(jìn)一步井網(wǎng)重構(gòu)提供依據(jù)。(4)利用采出程度、孔隙度、儲(chǔ)層埋深、剩余儲(chǔ)量豐度等參數(shù),根據(jù)模糊聚類分析方法開展了層系優(yōu)化研究。(5)針對(duì)剩余油區(qū)域及重新組合后的層系,設(shè)計(jì)了 5套后續(xù)開發(fā)調(diào)整方案,并進(jìn)行了預(yù)測(cè)研究,確定了最優(yōu)的調(diào)整方案。本文針對(duì)H油藏開發(fā)區(qū)含水上升較快、上部主力層水淹嚴(yán)重、層間矛盾突出的特點(diǎn),依據(jù)目前井網(wǎng)適應(yīng)性分析結(jié)果以及合理開采政策界限,從層系優(yōu)化和井網(wǎng)調(diào)整兩方面進(jìn)行了井網(wǎng)重構(gòu)研究,制定了合理的調(diào)整方案,為油藏的持續(xù)穩(wěn)定開發(fā)奠定了基礎(chǔ)。
[Abstract]:With the continuous development of water injection, many oilfields in China have entered the stage of high water cut development.The reservoir heterogeneity is aggravated by water injection for a long time, but the distribution of remaining oil is still regular. The original injection-production pattern and the division of strata can not meet the development demand at the present stage.Therefore, the adjustment of well pattern and the optimization of layer system in high water cut stage play an important role in promoting the high efficiency development of oil field.In this paper, the oil and water distribution in H reservoir is not clear, the injection-production well pattern is not perfect, the water cut rises quickly, and the upper part of the development zone is flooded seriously. Taking H reservoir development zone as the research object, a large amount of drilling, well logging and production performance data are used.On the basis of geological modeling, the distribution characteristics of remaining oil in blocks are studied, and the layer system optimization is carried out by using fuzzy cluster analysis method, reservoir engineering method and reservoir numerical simulation method in fuzzy mathematics.After studying the adjustment of well pattern, a reconstruction scheme of secondary well pattern is worked out. The concrete contents are as follows: (1) by using curve overlap method and cross plot method, the oil and gas reservoirs in H reservoir are re-identified and the oil-gas interface is redivided.On the basis of full understanding of logging and geological data, the block 3D geological model is established by phase control method, and the geological model is tested by pumping test.On the basis of this, a suitable reservoir numerical model of coarsening is developed. The production history fitting work of the whole area and the single well is completed. On this basis, the distribution law of residual oil is studied, and five kinds of residual oil distribution control types are concluded.For further well pattern reconstruction, using the parameters such as recovery degree, porosity, buried depth of reservoir, abundance of remaining reserves and so on, according to fuzzy cluster analysis method, the optimization study of strata is carried out.Five sets of adjustment schemes for subsequent development were designed, and the optimal adjustment scheme was determined.In this paper, according to the characteristics of H reservoir development zone where the water content rises rapidly, the upper main layer is flooded seriously, and the contradiction between layers is prominent, according to the results of adaptability analysis of well pattern and the limits of reasonable exploitation policy at present,This paper studies well pattern reconstruction from two aspects: layer system optimization and well pattern adjustment, and formulates reasonable adjustment scheme, which lays a foundation for sustainable and stable reservoir development.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TE324

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