本文選題：頁(yè)巖氣　切入點(diǎn)：滲流機(jī)理　出處：《西南石油大學(xué)》2015年碩士論文

【摘要】：頁(yè)巖氣在成藏、賦存、滲流等方面都不同于常規(guī)油氣藏,開(kāi)采方式與常規(guī)油氣也有明顯區(qū)別。但由于技術(shù)所限,我國(guó)頁(yè)巖氣藏開(kāi)發(fā)尚處于起步階段,特別是對(duì)頁(yè)巖氣藏滲流機(jī)理的認(rèn)識(shí)仍然不足。這就極大地制約了對(duì)頁(yè)巖氣藏經(jīng)濟(jì)、有效地開(kāi)發(fā)。因此,探討頁(yè)巖氣藏開(kāi)采過(guò)程中的復(fù)雜滲流問(wèn)題,對(duì)頁(yè)巖氣開(kāi)采技術(shù)的發(fā)展有著重大的理論意義。同時(shí)頁(yè)巖氣的利用與開(kāi)發(fā)又可以解決化石能源對(duì)環(huán)境破壞的大部分問(wèn)題。因此,探討頁(yè)巖氣藏開(kāi)采過(guò)程中的復(fù)雜滲流問(wèn)題,對(duì)我國(guó)經(jīng)濟(jì)發(fā)展和環(huán)境保護(hù)又有著重大的現(xiàn)實(shí)意義。 鑒于頁(yè)巖氣藏非線性滲流理論與數(shù)值模擬技術(shù)是有效開(kāi)發(fā)頁(yè)巖氣藏的前提和基礎(chǔ)。本文針對(duì)頁(yè)巖氣在運(yùn)移過(guò)程中的吸附、解吸、擴(kuò)散、滲流等特征,建立了頁(yè)巖氣藏氣-水兩相滲流的數(shù)學(xué)模型和數(shù)值模型。借助以上模型,深刻地認(rèn)識(shí)并分析了頁(yè)巖氣藏的滲流機(jī)理。而后應(yīng)用Eclipse數(shù)值模擬軟件的頁(yè)巖氣模塊對(duì)頁(yè)巖氣藏單井進(jìn)行了數(shù)值模擬研究,論證了氣藏自身參數(shù)和工程參數(shù)對(duì)產(chǎn)氣量及采收率的影響。利用正交試驗(yàn)法判斷了各敏感性參數(shù)對(duì)頁(yè)巖氣藏累計(jì)產(chǎn)氣量影響的主次順序。 本文取得的主要研究成果如下： (1)在大量國(guó)內(nèi)外文獻(xiàn)調(diào)研的基礎(chǔ)上,對(duì)頁(yè)巖儲(chǔ)層特征、儲(chǔ)集特征、滲流機(jī)理進(jìn)行了系統(tǒng)深入地研究,為頁(yè)巖氣藏的開(kāi)發(fā)動(dòng)態(tài)特征描述奠定了理論基礎(chǔ)。 (2)基于頁(yè)巖氣藏滲流特點(diǎn),建立了考慮Langmuir吸附作用、Fick擴(kuò)散作用和達(dá)西滲流的頁(yè)巖氣藏儲(chǔ)層氣-水兩相滲流數(shù)學(xué)模型。對(duì)數(shù)學(xué)模型采用全隱式差分方法建立了描述頁(yè)巖氣藏氣-水兩相流動(dòng)規(guī)律的數(shù)值模型。 (3)應(yīng)用Eclipse數(shù)值模擬軟件建立了頁(yè)巖氣藏單井?dāng)?shù)值模擬模型,對(duì)氣藏自身參數(shù)進(jìn)行了敏感性分析。結(jié)果表明：隨著裂縫系統(tǒng)滲透率的增加、Langmuir壓力的增加、Langmuir體積的增加、竄流系數(shù)的增加、擴(kuò)散系數(shù)的增加,水平井產(chǎn)氣量逐步上升；基質(zhì)滲透率對(duì)產(chǎn)氣量幾乎沒(méi)有影響。運(yùn)用極差法判斷出各敏感性參數(shù)對(duì)頁(yè)巖氣藏產(chǎn)氣量的影響順序?yàn)椋毫芽p滲透率、竄流系數(shù)、擴(kuò)散系數(shù)、Langmuir體積、Langmuir壓力、基質(zhì)滲透率。 (4)應(yīng)用Eclipse數(shù)值模擬軟件對(duì)工程參數(shù)進(jìn)行了敏感性分析。結(jié)果表明：隨著井型垂直角的增加,單井產(chǎn)氣量逐步上升,直井由于產(chǎn)量過(guò)低無(wú)法完成頁(yè)巖氣藏的商業(yè)化生產(chǎn)；隨著水平井井距的增加,單井產(chǎn)氣量逐步上升,但采收率逐漸下降；隨著水平段長(zhǎng)度的增加、裂縫半長(zhǎng)的增加及井底流壓的降低,單井產(chǎn)氣量逐步上升。運(yùn)用極差法判斷出各敏感性參數(shù)對(duì)頁(yè)巖氣藏產(chǎn)氣量的影響順序?yàn)椋壕琢鲏�、裂縫半長(zhǎng)、裂縫間距、水平井井距、水平段長(zhǎng)度。
[Abstract]:Shale gas is different from conventional oil and gas reservoirs in reservoir formation, occurrence and percolation.However, due to the limitation of technology, the development of shale gas reservoirs in China is still in the initial stage, especially the understanding of the seepage mechanism of shale gas reservoirs is still insufficient.This greatly restricted the shale gas reservoir economy and effective development.Therefore, it is of great theoretical significance for the development of shale gas recovery technology to discuss the complex seepage problem in the process of shale gas reservoir exploitation.At the same time, the use and development of shale gas can solve most of the environmental damage problems caused by fossil energy.Therefore, it is of great practical significance for the economic development and environmental protection of China to discuss the complex seepage problem in the process of shale gas reservoir exploitation.In view of the nonlinear seepage theory and numerical simulation technology of shale gas reservoir is the premise and foundation of effective development of shale gas reservoir.Aiming at the characteristics of adsorption, desorption, diffusion and percolation of shale gas during migration, a mathematical model and a numerical model of gas-water two-phase percolation in shale gas reservoir are established in this paper.With the help of the above model, the seepage mechanism of shale gas reservoir is deeply understood and analyzed.Then the single well of shale gas reservoir is numerically simulated by using the shale gas module of Eclipse software, and the effects of gas reservoir parameters and engineering parameters on gas production and recovery are demonstrated.The primary and secondary order of the influence of the sensitivity parameters on the cumulative gas production of shale gas reservoirs is determined by the orthogonal test method.The main research results obtained in this paper are as follows:1) on the basis of a large number of domestic and foreign literatures, the characteristics of shale reservoir, reservoir characteristics and percolation mechanism are studied systematically and deeply, which lays a theoretical foundation for the description of shale gas reservoir development dynamic characteristics.Based on the percolation characteristics of shale gas reservoir, a mathematical model of gas-water two-phase percolation in shale gas reservoir considering Langmuir adsorption and Darcy percolation is established.A numerical model of gas-water two-phase flow in shale gas reservoir is established by using the fully implicit difference method for the mathematical model.The single well numerical simulation model of shale gas reservoir is established by using Eclipse software, and the sensitivity of gas reservoir parameters is analyzed.The results show that with the increase of permeability of fracture system and the increase of Langmuir pressure, the volume of Langmuir, the coefficient of channeling flow and the coefficient of diffusion increase, the gas production of horizontal well increases gradually, and the matrix permeability has little effect on gas production.By using the range method, the order of influence of each sensitive parameter on gas production of shale gas reservoir is as follows: fracture permeability, channeling coefficient, diffusion coefficient, Langmuir volume and Langmuir pressure, matrix permeability.4) sensitivity analysis of engineering parameters is carried out by using Eclipse numerical simulation software.The results show that with the increase of vertical angle of well type, the gas production of single well increases gradually, and the commercial production of shale gas reservoir can not be completed in straight well because of its low production rate, and the gas production rate of single well increases gradually with the increase of horizontal well spacing.With the increase of horizontal section length, the increase of fracture half length and the decrease of bottom hole flow pressure, the gas production rate of single well increases gradually.By using the range method, the order of influence of each sensitive parameter on gas production of shale gas reservoir is as follows: bottom hole flow pressure, fracture half length, fracture spacing, horizontal well spacing and horizontal section length.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TE312

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉應(yīng)紅,李宗田,趙碧華;利用正交試驗(yàn)設(shè)計(jì)方法優(yōu)選低滲油藏整體壓裂方案[J];斷塊油氣田;2000年03期

2 丁文龍;許長(zhǎng)春;久凱;李超;曾維特;吳禮明;;泥頁(yè)巖裂縫研究進(jìn)展[J];地球科學(xué)進(jìn)展;2011年02期

3 段永剛;魏明強(qiáng);李建秋;唐艷;;頁(yè)巖氣藏滲流機(jī)理及壓裂井產(chǎn)能評(píng)價(jià)[J];重慶大學(xué)學(xué)報(bào);2011年04期

4 費(fèi)紅彩;張玉華;;美國(guó)未來(lái)能源格局趨勢(shì)與中國(guó)頁(yè)巖氣勘查現(xiàn)狀[J];地球?qū)W報(bào);2013年03期

5 范新欣;王寶和;于才淵;徐朝輝;齊永青;陳登峰;;基于分形理論的油頁(yè)巖有效擴(kuò)散系數(shù)研究[J];化學(xué)工程;2010年10期

6 李曉強(qiáng);周志宇;馮光;代曙光;蘇娜;;頁(yè)巖基質(zhì)擴(kuò)散流動(dòng)對(duì)頁(yè)巖氣井產(chǎn)能的影響[J];油氣藏評(píng)價(jià)與開(kāi)發(fā);2011年05期

7 李勇明;姚鋒盛;趙金洲;張雪萍;;頁(yè)巖氣藏納米孔隙微觀滲流動(dòng)態(tài)研究[J];科學(xué)技術(shù)與工程;2013年10期

8 閔劍;;世界頁(yè)巖氣開(kāi)發(fā)現(xiàn)狀及影響分析[J];當(dāng)代石油石化;2011年12期

9 崔永君,張慶玲,楊錫祿;不同煤的吸附性能及等量吸附熱的變化規(guī)律[J];天然氣工業(yè);2003年04期

10 張金川,金之鈞,袁明生;頁(yè)巖氣成藏機(jī)理和分布[J];天然氣工業(yè);2004年07期

相關(guān)博士學(xué)位論文 前1條

1 張先敏;復(fù)雜介質(zhì)煤層氣運(yùn)移模型及數(shù)值模擬研究[D];中國(guó)石油大學(xué);2010年

，

本文編號(hào)：1702007