本文選題：配伍性 + 注水質(zhì)量��； 參考：《東北石油大學》2015年碩士論文

【摘要】：保持底層壓力是提高油藏采收率的關(guān)鍵技術(shù)手段,注水成了保持底層壓力、提高油藏采收率最重要的方法。目前采用注水開發(fā)的新民油田歷經(jīng)22年時間,隨著“注好水、注夠水、精細注水”工作的不斷深入,注水工作的矛盾日益突出,作為注水的首要關(guān)鍵為油藏注好水問題也亟待解決。特別是新民油田采用清污混注,水質(zhì)配伍性差,對油藏傷害大,如何明確水質(zhì)配伍性給油藏帶來的傷害以及提高水質(zhì)配伍性是下步需攻關(guān)研究解決的問題。在地面上清水采出后經(jīng)過處理與原油脫出污水混合,清污混注的注入水水質(zhì)指標直接受到清水與污水混合后的配伍性影響,一旦配伍性差會導致注入水水質(zhì)指標超標,地面系統(tǒng)所做的工作效果降低,增加了地面系統(tǒng)負擔,同時隨著注入水的輸送和注入會導致地面系統(tǒng)受到影響,井下管柱腐蝕,增加地面系統(tǒng)運行投入和井下作業(yè)投入,同時地層受到不可逆的傷害,最終工程系統(tǒng)投入增加,油田的開發(fā)經(jīng)濟效益受到影響。在地層中由于注入水與地層水的配伍性會給油藏帶來傷害,導致儲滲空間受到影響,并且該傷害具有不可逆性,一旦油藏儲滲參數(shù)發(fā)生變化會降低油藏的經(jīng)濟開發(fā)效益。如果注入水與地層巖石不配伍會加劇油藏巖石性質(zhì)發(fā)生變化,最終導致采收率降低,致使油田的開發(fā)周期縮短、油藏采收率下降。為最終提高油田經(jīng)濟生產(chǎn)的效益,保持油藏指標參數(shù)穩(wěn)定,從巖心性質(zhì)研究入手,逐步研究配套的地面水處理工藝以提高地面注入水的配伍性,研究注入水與地層巖石的配伍性,研究注入水與地層水的配伍性,形成具有新民特色的地面水處理工藝和注水工藝。
[Abstract]:Keeping bottom pressure is the key technology to improve oil recovery. Water injection is the most important method to maintain bottom pressure and improve oil recovery.At present, Xinmin oilfield developed by water injection has experienced 22 years. With the deepening of the work of "good water injection, enough water injection, fine water injection", the contradiction of water injection work is becoming increasingly prominent.As the first key to water injection, the reservoir water injection problem should be solved urgently.Especially in Xinmin Oilfield, the water quality compatibility is poor, and the harm to reservoir is great. How to make clear the harm to reservoir caused by water quality compatibility and how to improve water quality compatibility are the problems that need to be solved in the next step.After recovery of clean water on the ground, the injected water is mixed with crude oil, and the water quality index of injected water is directly affected by the compatibility between clean water and sewage. Once the compatibility is poor, the water quality index of injected water will exceed the standard.The work effect of the surface system is reduced, and the burden of the surface system is increased. At the same time, with the transportation and injection of injected water, the surface system will be affected, the downhole pipe string will corrode, and the operation input of the surface system and the underground operation input will be increased.At the same time, the formation is damaged irreversibly, the investment of engineering system is increased, and the economic benefit of oilfield development is affected.Due to the compatibility of injected water and formation water, the reservoir storage and permeability space will be affected, and the damage is irreversible. Once the reservoir storage and permeability parameters change, the economic development benefits of the reservoir will be reduced.If the injection water is not compatible with the formation rock, the rock properties of the reservoir will be changed, and the oil recovery will be reduced, the development period of the oil field will be shortened, and the oil recovery will be reduced.In order to improve the economic production efficiency of oil field and keep the reservoir parameter stable, the matching surface water treatment technology is studied step by step to improve the compatibility of surface injected water.The compatibility of injected water with formation rock and the compatibility of injected water with formation water are studied to form the surface water treatment process and water injection technology with Xinmin characteristics.
【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】：TE357.6

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相關(guān)期刊論文 前1條

1 王濤;孟令偉;李慶江;李秀珍;;三參數(shù)綜合測試工藝及分析技術(shù)在文東油田的應用[J];商場現(xiàn)代化;2010年04期

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本文編號：1769186