W水驅(qū)油藏開發(fā)效果評價(jià)及注采系統(tǒng)調(diào)整
發(fā)布時(shí)間:2018-06-09 02:43
本文選題:動(dòng)態(tài)分析 + 開發(fā)效果評價(jià)。 參考:《西南石油大學(xué)》2015年碩士論文
【摘要】:參考國內(nèi)已經(jīng)進(jìn)行開發(fā)及其開采結(jié)束的油田區(qū)塊,大多數(shù)的區(qū)塊都是采取的注水開發(fā)的方式進(jìn)行開采。注水是否有效,效果的好壞,既影響油田的開采狀況的優(yōu)劣,最終采收率的大小,還會(huì)影響油田開發(fā)的開采年限的長短,經(jīng)濟(jì)效益的高低。因此及時(shí)準(zhǔn)確的對油田注水開發(fā)效果進(jìn)行評價(jià),掌握油田的實(shí)際開發(fā)情況十分重要。W油藏于2005年進(jìn)入開發(fā)階段,隨著近年來的開采,W油藏暴露出的問題越來越多。針對該油藏提出一套有效的系統(tǒng)的評價(jià)注水開發(fā)效果的方案和鑒別標(biāo)準(zhǔn),具有重要的意義。 本文主要針對W油藏地質(zhì)與生產(chǎn)動(dòng)態(tài)特征,從含水率、注采連通性等方面對W油藏有一個(gè)明確的認(rèn)識。在其基礎(chǔ)上,從水驅(qū)儲(chǔ)量控制程度、動(dòng)用程度、產(chǎn)量變化、壓力變化、注入水利用情況、注水量、采油液速度、采收率這八個(gè)方面進(jìn)行開發(fā)效果評價(jià)。參照石油與天然氣國家標(biāo)準(zhǔn)對指標(biāo)進(jìn)行劃分以及單指標(biāo)評價(jià),然后通過灰色模糊數(shù)學(xué)的方法進(jìn)行綜合評價(jià),對W油藏的開發(fā)狀況有科學(xué)的認(rèn)識。 在對W油藏開發(fā)效果有了整體明確的認(rèn)識上,對其開發(fā)不合理、不奏效的方面進(jìn)行調(diào)整。在調(diào)整前先確定了W油藏的調(diào)整目的和原則,在當(dāng)前開發(fā)情況下對部分生產(chǎn)指標(biāo)重新進(jìn)行了合理預(yù)測,然后通過井網(wǎng)(主要通過對油水井補(bǔ)鉆,轉(zhuǎn)注)以及注采對應(yīng)關(guān)系(主要通過對油水井補(bǔ)孔,水井分層注水)兩大方式對W油藏進(jìn)行調(diào)整,以改善W油藏開發(fā)現(xiàn)狀,提高原油采收率,增加W油藏的開發(fā)效益。
[Abstract]:Referring to the oil field blocks which have been developed and finished in China, most of the blocks are developed by water injection. Whether the water injection is effective or not, whether the effect is good or bad, not only affects the exploitation condition of the oilfield, the final recovery factor, but also affects the length of the exploitation life and the economic benefit of the oilfield development. Therefore, it is very important to evaluate the effect of oilfield water injection development in time and accurately, to master the actual development situation of oil field. W reservoir entered the development stage in 2005. With the development of W reservoir in recent years, more and more problems have been exposed. It is of great significance to put forward a set of effective schemes and identification criteria for evaluating the water injection development effect for this reservoir. This paper mainly aims at the geological and production dynamic characteristics of W reservoir, according to the water cut, There is a clear understanding of W reservoir in injection-production connectivity. On the basis of it, the development effect is evaluated from eight aspects, such as the control degree of water drive reserves, the degree of production, the change of pressure, the situation of water injection, the quantity of water injected, the speed of oil recovery and the recovery factor. According to the national standards of petroleum and natural gas, the indexes are divided and the single index is evaluated, and then the comprehensive evaluation is carried out by the method of grey fuzzy mathematics. There is a scientific understanding of the development situation of W reservoir. On the basis of an overall clear understanding of the development effect of W reservoir, the unreasonable and ineffective development of W reservoir is adjusted. Before adjustment, the purpose and principle of W reservoir adjustment are determined, and some production indexes are forecasted reasonably under the current development condition, and then through well pattern (mainly through supplementary drilling of oil-water wells, In order to improve the present situation of W reservoir, improve the oil recovery efficiency and increase the development benefit of W reservoir, the two ways of changing injection and corresponding relation of injection and production (mainly through filling hole in oil-water well and injecting water into water by stratified water well) are used to adjust the W reservoir in order to improve the present situation of development of W reservoir.
【學(xué)位授予單位】:西南石油大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:TE357.6
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