本文關(guān)鍵詞：復(fù)合熱載體吞吐后開(kāi)采方式的研究　出處：《東北石油大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 大慶薩北油田 復(fù)合熱載體吞吐 注入量 開(kāi)采方式

【摘要】：薩北油田自從上世紀(jì)七十年代投入開(kāi)發(fā)以來(lái),已進(jìn)入高含水期,產(chǎn)量遞減速速快,且非均質(zhì)性嚴(yán)重。該區(qū)塊曾開(kāi)展過(guò)蒸汽吞吐、煙道氣吞吐、聚合物驅(qū)等試驗(yàn),但是效果均不理想。通過(guò)室內(nèi)研究發(fā)現(xiàn),復(fù)合熱載體具有較好的作用,在相同實(shí)驗(yàn)條件下,比蒸汽吞吐、煙道氣吞吐能夠提高采收率5%以上。因此,作為一項(xiàng)儲(chǔ)備技術(shù)亟需進(jìn)行吞吐后開(kāi)采方式的研究。本文在模擬地層的條件下,針對(duì)該區(qū)塊進(jìn)行了復(fù)合熱載體吞吐后開(kāi)采方式的研究,通過(guò)在室內(nèi)開(kāi)展大量的驅(qū)替實(shí)驗(yàn)來(lái)分析在復(fù)合熱載體吞吐的基礎(chǔ)上,水驅(qū)、蒸汽驅(qū)、CO2+N2驅(qū)以及復(fù)合熱載體驅(qū)替的驅(qū)油效果,最后確定合理的開(kāi)采方式。通過(guò)室內(nèi)物理模擬實(shí)驗(yàn),注入的復(fù)合熱載體讓原油物性變好,降低原油粘度和殘余油飽和度,使原油更易被采出,從而提高地層原油采收率。復(fù)合熱載體吞吐三周期后轉(zhuǎn)水驅(qū)、蒸汽驅(qū)的的采收率最高,雖然水驅(qū)的注入能力低,但是由于該區(qū)塊屬于中高滲地層,適合常規(guī)水驅(qū),且蒸汽驅(qū)的成本高。從氣油比來(lái)看,水驅(qū)、蒸汽驅(qū)突破之前的氣油比最低,氣油比越高,說(shuō)明采出同樣多的油需要注入的氣體越多,開(kāi)采成本相對(duì)越高。因此,復(fù)合熱載體吞吐后的最佳開(kāi)采方式為水驅(qū)。因此,復(fù)合熱載體吞吐后的最佳開(kāi)采方式為水驅(qū)。通過(guò)對(duì)注復(fù)合熱載體吞吐技術(shù)的研究以及轉(zhuǎn)驅(qū)之后的驅(qū)替實(shí)驗(yàn)研究,表明在薩北過(guò)渡帶地區(qū)實(shí)施轉(zhuǎn)驅(qū)是可行的,也為今后進(jìn)一步擴(kuò)大復(fù)合熱載體的應(yīng)用領(lǐng)域提供了實(shí)驗(yàn)依據(jù)。
[Abstract]:Since its development in -30s, Sabei Oilfield has entered a period of high water cut, the output deceleration speed is fast, and the heterogeneity is serious. The block has carried out steam huff and puff, flue gas huff and puff, polymer flooding and so on. But the effect is not ideal. Through laboratory research, it is found that the composite heat carrier has a better effect, under the same experimental conditions, compared with steam huff and puff, flue gas huff and puff can increase oil recovery by more than 5%. As a reserve technology, it is urgent to study the post-huff and puff mining methods. In this paper, under the condition of simulating the formation, a study on the post-huff and puff mining mode of the complex heat carrier is carried out for the block. A large number of displacement experiments were carried out in laboratory to analyze the oil displacement effects of water flooding, steam flooding, CO2 N2 flooding and composite heat carrier flooding on the basis of complex heat carrier huff and puff. Through laboratory physical simulation experiments, the injected composite heat carrier can improve the physical properties of crude oil, reduce the viscosity and saturation of residual oil, and make the crude oil more easy to be extracted. So as to improve the oil recovery. After three cycles of heat carrier huff and puff, steam flooding has the highest recovery efficiency, although the injection capacity of water flooding is low, but the block belongs to medium and high permeability formation. It is suitable for conventional water flooding, and the cost of steam flooding is high. In water flooding, the ratio of gas to oil before steam flooding is the lowest, and the higher the ratio of gas to oil is, the more gases need to be injected to produce the same amount of oil. The higher the mining cost is, therefore, the best mining method after huff and puff of composite heat carrier is water drive. The optimum exploitation mode after huff and puff of composite heat carrier is water drive. Through the research on the technology of injection heat carrier huff and puff and the experimental study of displacement after the transfer drive, it is proved that it is feasible to carry out the flooding in the transitional zone of the northern part of the province. It also provides experimental basis for further expanding the application field of composite heat carriers in the future.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TE357

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本文編號(hào)：1397037