發(fā)布時間：2018-03-20 16:39

  本文選題：砂體識別　切入點：儲層評價　出處：《東北石油大學》2015年碩士論文　論文類型：學位論文

【摘要】：大情字井油田黑46區(qū)塊經過多年的注水開發(fā),目前暴露出影響開發(fā)效果及穩(wěn)產的問題:首先,受巖性和物性及儲層非均質性影響導致水驅動用程度低。儲層物性差,層間非均質嚴重,滲透率級差大、突進系數(shù)大、滲透率變異系數(shù)大,分層吸水極不均勻,分層動用存在較大差異,注入水沿裂縫方向突進快導致裂縫方向油井含水上升快;其次,儲層及隔夾層描述不夠精細。各小層間及小層內部砂體間夾有大量的隔夾層,影響了注水在層內的均勻推進,造成吸水程度差異較大,主力油層水淹嚴重,而非主力油層吸水差,影響了油水井的注采對應關系;最后,剩余潛力分布需進一步明確。目前已表現(xiàn)出綜合含水率高、采出程度低等特征,如何提高開發(fā)效果、控制含水上升速度,充分挖掘潛力是油田下步工作需要解決的主要問題。針對區(qū)塊存在的問題,在研究區(qū)開展小層對比、砂體識別、沉積微相研究和隔夾層精細研究的基礎上,結合動態(tài)資料,對黑46區(qū)塊進行動態(tài)分析,分井組研究,確定每個井組油水井之間的對應關系及砂體連通狀況,分析注入水的優(yōu)勢滲流方向。利用三維模型,研究剩余油的分布狀況和分布特點,制定詳細的剩余油挖潛方案,并進行數(shù)值模擬預測,優(yōu)選最佳方案,指導油藏開發(fā)。
[Abstract]:After many years of water injection development in Hei46 block of Dazhengzjing Oilfield, problems affecting the development effect and stable production are exposed. Firstly, the low water driving degree and poor reservoir physical property are caused by the influence of lithology, physical properties and reservoir heterogeneity. The heterogeneity between layers is serious, the permeability difference is large, the penetration coefficient is large, the coefficient of variation of permeability is large, the water absorption of the layers is very uneven, and there is great difference in the production of the layers. The injection water burst along the fracture direction causes the water cut of the oil well to rise rapidly in the fracture direction. Secondly, the description of reservoir and intercalation is not precise enough. A large number of interlayers are intercalated between each sublayer and between sand bodies in the sublayer, which affects the uniform advance of water injection in the layer, resulting in a great difference in the degree of water absorption and serious flooding in the main reservoir. However, the difference in water absorption in non-main reservoirs has affected the corresponding relationship between injection and production of oil and water wells. Finally, the distribution of residual potential needs to be further clarified. At present, the distribution of residual potential has shown the characteristics of high comprehensive water cut and low recovery degree, so how to improve the development effect, Controlling the water cut rising speed and fully exploiting the potential are the main problems to be solved in the next step of oilfield work. In view of the problems existing in the block, on the basis of the small layer contrast, sand body identification, sedimentary microfacies research and fine intercalation study in the study area, Based on the dynamic data, the dynamic analysis of Hei 46 block is carried out, and the well group research is carried out to determine the corresponding relationship between oil and water wells in each well group and the state of sand body connectivity, and to analyze the dominant seepage direction of injected water. This paper studies the distribution and characteristics of remaining oil, makes a detailed plan for tapping potential of remaining oil, carries out numerical simulation and prediction, and optimizes the best scheme to guide reservoir development.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.13;TE327

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本文編號：1639937