【摘要】：我國(guó)油田大多屬于陸相沉積油藏,沉積條件復(fù)雜,物性差異較大。其中,有一類特殊的難開發(fā)油藏----底水稠油油藏。該類油藏由于非均質(zhì)性嚴(yán)重、底水活躍、地層原油粘度較高,開發(fā)難度大,目前尚無有效開發(fā)方式可借鑒。底水稠油油藏開發(fā)所面臨的一個(gè)最大問題就是底水錐進(jìn)。底水錐進(jìn)引起了油井見水早、無水采油期短、含水上升快、采油成本高、經(jīng)濟(jì)效益差等一系列的生產(chǎn)問題�；谏鲜鰡栴},本文在參考國(guó)內(nèi)外底水油藏已經(jīng)取得的開發(fā)技術(shù)研究及應(yīng)用成果的基礎(chǔ)上,以太平油田沾5塊油藏為研究對(duì)象,通過油藏工程、數(shù)值模擬方法,對(duì)其開展綜合研究,弄清目前的開發(fā)狀況及存在的問題,研究水平井技術(shù)和人工隔板控水穩(wěn)油技術(shù)對(duì)于沾5塊的適應(yīng)性,以及排水采油技術(shù)抑制水錐的效果。并同時(shí)尋找其他適應(yīng)性方法,如注氮?dú)馀菽瓑核F技術(shù)。提出切實(shí)可行的開發(fā)調(diào)整措施,最終使油田進(jìn)入一個(gè)穩(wěn)定、高效的開發(fā)階段,獲得較好的經(jīng)濟(jì)效益,同時(shí)為同類油藏改善開發(fā)效果提供借鑒。通過研究各技術(shù)對(duì)于沾5塊的控水穩(wěn)油效果,發(fā)現(xiàn)該區(qū)塊水平井的產(chǎn)量遠(yuǎn)超過臨界產(chǎn)量,致使含水快速增大;當(dāng)運(yùn)用打隔板技術(shù)抑制底水錐進(jìn)時(shí),隔板大小應(yīng)介于油藏與水體接觸面積的1/2到3/4之間,且應(yīng)通過降低產(chǎn)液速度來延緩底水的錐進(jìn);研究排水采油技術(shù)對(duì)于沾5塊的適應(yīng)性并得到了最佳排水速度以及最佳產(chǎn)液速度。經(jīng)過對(duì)三種技術(shù)的研究對(duì)比可知,排水采油技術(shù)對(duì)沾5稠油底水油藏的開發(fā)效果相對(duì)較好。
[Abstract]:Most oil fields in China belong to continental sedimentary reservoirs with complex sedimentary conditions and great differences in physical properties. Among them, there is a special kind of hard-to-develop reservoir-heavy oil reservoir with bottom water. Due to the serious heterogeneity, active bottom water, high viscosity of formation crude oil and great difficulty in development, there is no effective development method for this kind of reservoir. One of the biggest problems in the development of bottom water heavy oil reservoir is bottom water coning. The bottom water coning causes a series of production problems, such as early water discovery, short water-free oil recovery period, rapid rise of water cut, high oil production cost and poor economic benefit. Based on the above problems, based on the research and application results of domestic and foreign bottom water reservoirs, this paper takes five block reservoirs in Taiping Oilfield as the research object, through reservoir engineering, numerical simulation method. The comprehensive research is carried out to make clear the current development situation and existing problems, to study the adaptability of horizontal well technology and artificial partition control and oil stabilization technology to five blocks, and the effect of drainage oil recovery technology to restrain water cone. At the same time, we look for other adaptive methods, such as nitrogen foam pressure cone technology. The practical measures of development adjustment are put forward to make the oil field enter a stable and efficient stage of development and obtain better economic benefits. Meanwhile, it provides reference for improving the development effect of the same kind of reservoir. By studying the effect of each technology on controlling water and stabilizing oil with 5 blocks, it is found that the production of horizontal well in this block is far more than the critical production, resulting in the rapid increase of water cut. When the bottom water coning is restrained by the use of baffle technique, the size of the separator should be between 1 / 2 to 3 / 4 of the contact area between the reservoir and the water body, and the coning of the bottom water should be delayed by reducing the velocity of liquid production. In this paper, the adaptability of drainage technology to 5 block is studied, and the optimum drainage speed and liquid production rate are obtained. Through the research and comparison of the three technologies, it can be seen that the drainage oil recovery technology has a relatively good development effect on the bottom-water reservoir of Dian-5 heavy oil.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE355

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