本文關鍵詞：王場油田北區(qū)注水開發(fā)調(diào)整方案研究　出處：《長江大學》2017年碩士論文　論文類型：學位論文

  更多相關文章： 三維地質(zhì)建模 開發(fā)方案 剩余油分布 油藏數(shù)值模擬

【摘要】：王場油田位于江漢油區(qū)潛江凹陷北部,主要為一長軸背斜。王場油田北區(qū)油組平面上表現(xiàn)為西南部及軸部油井產(chǎn)量高,北部及東北部油井產(chǎn)量低的特點,油井生產(chǎn)能力差異大。本文針對研究區(qū)塊特征利用三維地質(zhì)建模和油藏數(shù)值模擬方法為提高調(diào)整該區(qū)塊的實際產(chǎn)量提供技術支持和開發(fā)調(diào)整方案。本文通過對王場油田北區(qū)測井資料的綜合分析,結(jié)合前人對本區(qū)塊沉積環(huán)境的研究結(jié)果,將北區(qū)劃分為五個沉積微相:水下分流河道、水下分流河道側(cè)緣、水下分流河道間、水下天然堤和河口壩。北區(qū)砂體主要分布在分流河道與河道側(cè)緣;借由沉積微相的細分更進一步得到北區(qū)微相分布圖。在得到相圖分布的基礎上,利用相控建模的方法,建立了三維精細地質(zhì)模型,得到了王場油藏北區(qū)的構(gòu)造模型、微相模型及屬性模型。通過動態(tài)數(shù)值模擬,對地質(zhì)儲量、油氣產(chǎn)量、含水量等指標進行歷史擬合和儲量復算,結(jié)合對地質(zhì)因素和開發(fā)因素的影響分析得到了王場油田北區(qū)剩余油的分布情況。王場油田北區(qū)儲量縱向上主要分布在潛4~(0-1)、潛4~(2-3)和潛4_下~2,其余層儲量很少,因此潛4~(0-1)、潛4~(2-3)和潛4_下~2是下一步油藏開發(fā)關注的重點。針對王場油田北區(qū)開發(fā)中目前存在的含水上升快、注采系統(tǒng)不完善、注水效果差等問題,本次研究進行了注水效果性分析,得到本區(qū)注水典型的三種注水見效模式:快速水淹型、厚砂連通型和薄砂尖滅型;通過對三種注水現(xiàn)狀的分析得到,僅有厚砂連通型注水效果好;快速水淹主要由于本區(qū)域采用高部位注水,而區(qū)域內(nèi)地層傾角為50°左右,注入水快速向下流動,低部位采油井快速水淹;薄砂尖滅主要由于前人對砂體認識不夠精細,井間砂體的不連通性導致無效注水,使得注水未達到預期目的。本次研究針對以上發(fā)現(xiàn)的幾種注水類型,結(jié)合油田細分層系、井網(wǎng)加密及注采系統(tǒng)調(diào)整潛力,編制了以改善注水開發(fā)效果、提高儲量有效動用程度為主要內(nèi)容的調(diào)整方案,主要包括對注采井網(wǎng)不完善的地區(qū)采取補孔或加密、對地層能量不足的區(qū)域采用分層注水,為今后合理開發(fā)油田提供依據(jù)。
[Abstract]:The Wang field oil field is located in the northern Qianjiang sag of Jianghan oil area, mainly a long axis anticline. The oil wells in the north area of the Wang field oilfield show that the oil well production in the southwest and the axis is high, the oil well production in the north and the northeast is low, and the oil well production capacity is very different. According to the characteristics of the block, 3D geological modeling and reservoir numerical simulation are used to provide technical support and development adjustment plan for improving the actual output of the block. This article through to the north of Wangchang Oilfield Logging Data comprehensive analysis, combined with the results of previous studies on the sedimentary environment of the North block, will be divided into five sedimentary microfacies: underwater distributary channel, natural levee lateral border of subaqueous distributary channel, underwater distributary interchannel, underwater and estuary dam. The sand bodies in the north area are mainly distributed in the distributary channel and the channel side of the river, and the microphase distribution map of the northern region is further obtained by the subdivision of sedimentary microfacies. Based on the distribution of phase diagram, a three-dimensional fine geological model is established by means of facies controlled modeling, and the structural model, microfacies model and attribute model of the northern part of the Wang Chang reservoir are obtained. Through dynamic numerical simulation, geological fit, oil and gas production, water content and other indicators were used for historical fitting and reserves re calculation. Combined with the analysis of geological factors and development factors, the distribution of remaining oil in the northern area of Wang Chang oil field was obtained. The reserves in the northern part of the Wang Chang oil field are mainly distributed in the latent 4~ (0-1), the latent 4~ (2-3) and the hidden 4_ ~2, and the remaining layer reserves are very few. Therefore, the latent 4~ (0-1), the latent 4~ (2-3) and the ~2 below the 4_ below are the key points for reservoir development. In Wangchang oilfield North Development in the present water rising fast, injection production system is not perfect, poor water injection results, this study analyzed the effect of water injection, three kinds of water flooding pattern in this area water typical: fast flooded type, thick sand connectivity and thin sand pinchout; get through the analysis of three kinds of water situation, only thick sand connectivity type water injection effect is good; rapid flooding due to the high part of the main water area, and the regional stratigraphic dip is about 50 degrees, the injected water flows down quickly, the lower part of wells fast water flooded; thin sand pinchout sand body mainly due to previous knowledge fine enough, interwell sand body connectivity does not lead to invalid water injection, the injection did not achieve the intended purpose. The study on several types of water found, with oil, Layer Subdivision infilling and injection production system adjustment potential, developed to improve the adjustment scheme of water flooding development effect, improve the producing degree of reserves effective as the main content, including the imperfect injection production pattern of holes or encryption, take up the area the inadequate formation energy region by stratified water, providing basis for reasonable development of oilfield.
【學位授予單位】：長江大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TE357.6

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