本文選題：優(yōu)勢通道　切入點：模糊評判　出處：《重慶科技學院》2015年碩士論文　論文類型：學位論文

【摘要】：秦皇島32-6油田是典型的大型復雜河流相稠油油田，地質(zhì)儲量高達1.7×108m3，現(xiàn)有生產(chǎn)井165口，年產(chǎn)油量218×104m3，具有非常好的開發(fā)前景。 然而，該油田具有儲層結(jié)構(gòu)疏松、易出砂、原油粘度大、非均質(zhì)性較強等顯著特點，并且，油田含水率高達86%，注入水沿優(yōu)勢通道竄流，導致了注入水無效循環(huán)，繼續(xù)進行注水開發(fā)，效果差，給油田的后續(xù)開發(fā)帶來了難題。針對以上問題，以秦皇島32-6油田優(yōu)勢通道為研究對象，通過模糊綜合評判方法確定存在優(yōu)勢通道的油水井，并計算了優(yōu)勢通道體積、滲透率等參數(shù)，為后期封堵優(yōu)勢通道提供數(shù)據(jù)支撐，同時提出了優(yōu)勢通道治理對策，，解決了開發(fā)中的突出矛盾，達到了開發(fā)中后期穩(wěn)油控水、提高油藏采收率的目的。 通過對秦皇島32-6油田優(yōu)勢通道的研究，獲得以下認識： ①通過模糊綜合評判方法，對優(yōu)勢通道進行存在性識別，從定量的角度確定了優(yōu)勢通道的位置，將存在優(yōu)勢通道的油水井組與正常生產(chǎn)的油水井組區(qū)分開，為后期進行調(diào)剖堵水提供選擇目標； ②通過動態(tài)數(shù)據(jù)法、經(jīng)驗公式法和概率密度模型法，獲得油水井間優(yōu)勢通道參數(shù)，由優(yōu)勢通道參數(shù)計算結(jié)果可見，隨著竄流程度加劇，優(yōu)勢通道滲透率、孔隙半徑、厚度、體積和孔隙度等關鍵參數(shù)也隨之發(fā)生變化； ③針對秦皇島32-6油田北區(qū)和南區(qū)12口發(fā)生竄流的水井，通過將優(yōu)勢通道分為單向竄流和多向竄流，提出了采用聚合物凍膠的封堵對策，計算了堵劑用量并設計了大量注入堵劑的封堵方法。
[Abstract]:Qinhuangdao 32-6 oilfield is a typical large complex fluvial heavy oil field with geological reserves of 1.7 脳 108m3, 165 production wells and annual oil production of 218 脳 104m3.It has a very good development prospect. However, the oilfield is characterized by loose reservoir structure, easy sand production, high viscosity of crude oil, strong heterogeneity and so on. Moreover, the water cut of the oilfield is as high as 86%, and the injected water flows along the dominant channel, which leads to the ineffective circulation of injected water. The effect of water injection development is poor, which brings difficulties to the further development of oil fields. In view of the above problems, taking Qinhuangdao 32-6 oilfield as the research object, the oil and water wells with dominant channels are determined by fuzzy comprehensive evaluation method. The parameters such as the volume and permeability of the superior channel are calculated to provide data support for blocking the dominant channel in the later period, and the countermeasures of controlling the superior channel are put forward, which solve the outstanding contradiction in the development and achieve the stability of oil and water control in the middle and late stages of development. The purpose of improving oil recovery. Through the research on the dominant channel of Qinhuangdao 32-6 Oilfield, the following understandings are obtained:. The main results are as follows: (1) by fuzzy comprehensive evaluation method, the existence of dominant channel is identified, the location of dominant channel is determined from the quantitative point of view, and the oil-water well group with dominant channel is distinguished from the oil-water well group in normal production. To provide the selection target for profile control and water shutoff in the later stage; 2 through dynamic data method, empirical formula method and probability density model method, the parameters of dominant passage between oil and water wells are obtained. From the calculation results of the parameters of dominant channel, it can be seen that the permeability, pore radius and thickness of dominant channel are increased with the increase of channeling flow. The key parameters such as volume and porosity also changed. In view of 12 wells with channeling flow in the north and south regions of Qinhuangdao 32-6 Oilfield, by dividing the dominant channels into one-way channeling flow and multi-direction channeling flow, the plugging countermeasures using polymer gel are put forward. The amount of plugging agent was calculated and the plugging method of a large amount of plugging agent was designed.
【學位授予單位】：重慶科技學院
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE358

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