本文選題：氣頂稠油油藏 + 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】：隨著石油資源的日益緊張,人們越來越重視特殊油藏的開發(fā)。熱采作為一種常規(guī)的稠油油藏開發(fā)手段已不能滿足目前開發(fā)需要。深層、超深層稠油油藏的開發(fā)是擺在石油工作者面前的一道難題。由于油藏埋藏深,注蒸汽井筒熱損失嚴(yán)重,注入壓力要求高,熱采不適合此類稠油油藏的開發(fā),許多油田正在嘗試注氣開發(fā)此類油藏,一方面注入的氣體在一定的壓力下可以溶于原油中,有較好的降黏作用和體積膨脹作用；另一方面隨著含氣飽和度增加,可降低油藏油水界面張力,溶于原油中的氣體有一定的溶解氣驅(qū)作用。因此,研究注氣提高稠油油藏采收率有十分重要的經(jīng)濟(jì)意義和現(xiàn)實(shí)意義。 東河1JⅢ帶凝析氣頂稠油油藏儲層物性差,下部稠油黏度大,氣頂收縮太快,單井產(chǎn)能下降快,導(dǎo)致油氣互竄,生產(chǎn)井含水率均處于中高含水以上,采出程度低。本文在調(diào)研國內(nèi)外油田注氣開發(fā)的基礎(chǔ)上,分析了不同注入氣介質(zhì)的驅(qū)油機(jī)理,并詳細(xì)分析了油氣接觸過程中流體性質(zhì)的變化。在完成室內(nèi)實(shí)驗(yàn)擬合的基礎(chǔ)上建立了東河1JⅢ油藏八組分井組模型,分別研究了不同注入介質(zhì)(CO2、N2、烴氣)和注采工藝參數(shù)(注采層位、注采井型、注采井距等)對注氣開發(fā)效果的影響,采用正交分析的方法比較不同注入介質(zhì)、不同注采工藝參數(shù)下的產(chǎn)油量、含水率、最終采收率等主要生產(chǎn)指標(biāo),結(jié)合油藏目前實(shí)際生產(chǎn)情況和剩余油分布的特點(diǎn)設(shè)計(jì)了三套東河1JⅢ油藏注氣開發(fā)調(diào)整對策,用數(shù)值模擬的方法對各方案進(jìn)行計(jì)算對比,并結(jié)合經(jīng)濟(jì)評價(jià)對各方案進(jìn)行了優(yōu)選。
[Abstract]:With the increasing tension of oil resources, people pay more and more attention to the development of special reservoirs. Thermal recovery as a conventional heavy oil reservoir development means can not meet the needs of current development. Deep deep, deep heavy oil reservoir development is a difficult problem in front of oil workers. The injection pressure is high and the thermal recovery is not suitable for the development of this kind of heavy oil reservoir. In many fields, gas injection is being tried to develop such reservoirs. On the one hand, the injected gas can be dissolved in crude oil under certain pressure. It has good viscosity reduction and volume expansion. On the other hand, with the increase of gas saturation, the oil and water interface can be reduced. The gas dissolving in crude oil has a certain dissolving gas drive. Therefore, it is of great economic and practical significance to study gas injection to improve the recovery of heavy oil reservoir.
In the Donghe 1J III condensate gas top heavy oil reservoir, the reservoir property is poor, the lower heavy oil viscosity is large, the gas top contract is too fast, the single well productivity decreases rapidly, resulting in the oil and gas channeling, the water cut in the production well is in the middle and high water cut, and the recovery is low. On the basis of the investigation of gas injection development at home and abroad, the oil displacement mechanism of different injection gas media is analyzed in this paper. The change of fluid properties in the process of oil and gas contact is analyzed in detail. On the basis of fitting the laboratory experiment, the eight component well group model of Donghe 1J III reservoir is set up, and the influence of different injection medium (CO2, N2, hydrocarbon gas) and injection production process parameters (injection production layer, injection production well type, injection production well distance, etc.) on gas injection development effect are studied. The method of orthogonal analysis is compared with different injection medium, oil production, water content and final recovery under different injection and production parameters. According to the current actual production situation and the characteristics of remaining oil distribution, three sets of adjustment countermeasures for gas injection development of Donghe 1J III reservoir are designed, and the schemes are calculated by numerical simulation method. Comparison and combination of economic evaluation are used to optimize each scheme.
【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】：TE357.7

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