本文選題：水力壓裂 + 卸壓增透��； 參考：《貴州大學(xué)》2015年碩士論文

【摘要】：本文針對(duì)興隆煤礦低透氣性突出煤層,采用理論分析、數(shù)值模擬和現(xiàn)場(chǎng)試驗(yàn)相結(jié)合的研究方法,對(duì)其開(kāi)展水力壓裂卸壓增透抽采技術(shù)的研究及研究成果應(yīng)用的經(jīng)濟(jì)效益分析。主要研究?jī)?nèi)容如下:(1)選取興隆煤礦三個(gè)穿層和三個(gè)順層水力壓裂點(diǎn),通過(guò)分析確定合理的模型參數(shù),應(yīng)用RFPA2D-Flow滲流分析版數(shù)值分析軟件,模擬得到煤巖體在注水壓力不斷增加下的應(yīng)力分布圖和聲發(fā)射圖(直觀顯現(xiàn)孔壁周?chē)簬r體從微裂隙產(chǎn)生、逐漸擴(kuò)展直至大面積破裂),并得出它們的水力壓裂破煤注水壓力、滲透范圍。(2)通過(guò)對(duì)穿層及順層壓裂鉆孔的模擬結(jié)果作進(jìn)一步分析研究,分別求出破煤注水壓力p、滲透范圍r與煤層埋深h、煤層堅(jiān)固性系數(shù)f值的關(guān)系式,作為試驗(yàn)鉆孔壓裂參數(shù)計(jì)算方法。(3)通過(guò)選取+200m一區(qū)南抽放巷、1601S采煤工作面為試驗(yàn)地點(diǎn),根據(jù)試驗(yàn)鉆孔壓裂參數(shù)計(jì)算方法設(shè)計(jì)試驗(yàn)鉆孔間距及相關(guān)參數(shù),并進(jìn)行水力壓裂現(xiàn)場(chǎng)試驗(yàn),進(jìn)而對(duì)檢驗(yàn)鉆孔煤樣水分測(cè)試,得到試驗(yàn)鉆孔實(shí)際壓裂參數(shù),其與壓裂參數(shù)計(jì)算方法所得結(jié)果表現(xiàn)出較好的一致性,說(shuō)明該方法基本合理,可作為礦井水力壓裂鉆孔間距及相關(guān)參數(shù)設(shè)計(jì)依據(jù)(地質(zhì)構(gòu)造帶應(yīng)用此方法時(shí),需充分考慮其影響)。(4)經(jīng)與礦井原有壓裂鉆孔進(jìn)行技術(shù)比較,兩試驗(yàn)地點(diǎn)的水力壓裂鉆孔間距增加后,預(yù)抽塊段煤層瓦斯的抽采率相差很小,但壓裂鉆孔利用率明顯增加,說(shuō)明原有壓裂參數(shù)設(shè)計(jì)不合理,應(yīng)根據(jù)壓裂參數(shù)計(jì)算方法,優(yōu)化壓裂參數(shù),保持增透效果,降低壓裂成本,增加經(jīng)濟(jì)效益。(5)通過(guò)對(duì)試驗(yàn)區(qū)和推廣區(qū)采用試驗(yàn)方案和原有方案的水力壓裂經(jīng)濟(jì)成本進(jìn)行比較,得出本文研究成果應(yīng)用的經(jīng)濟(jì)效益。
[Abstract]:Aiming at the low permeability outburst coal seam of Xinglong Coal Mine, this paper adopts the research method of combining theoretical analysis, numerical simulation and field test to study the technology of hydraulic fracturing unpressurization and antipenetration pumping and the economic benefit analysis of the application of the research results. The main research contents are as follows: (1) selecting three hydraulic fracturing points in Xinglong coal mine, determining reasonable model parameters and applying RFPA2D-Flow seepage analysis software. The stress distribution map and acoustic emission diagram of coal and rock mass under increasing water injection pressure were obtained by simulation. (the coal and rock mass around the hole wall appeared from microcracks and gradually expanded to a large area of fracture, and their hydraulic fracturing water injection pressure was obtained. Through further analysis and study on the simulation results of perforating and bedding fracturing drilling, the relationship between water injection pressure (p) and penetration range r (r) and the depth of coal seam (h), and the coefficient of coal seam solidity (f) are obtained, respectively. As a method for calculating the fracturing parameters of test boreholes, the distance between test boreholes and related parameters is designed according to the calculation method of fracturing parameters of test boreholes by selecting the coal mining face No. 1601S of south pumping roadway in 200m area as the test site. The hydraulic fracturing field test is carried out, and the actual fracturing parameters of the test borehole are obtained by testing the water content of the coal sample of the borehole, which shows good agreement with the results obtained by the fracturing parameter calculation method, which shows that the method is basically reasonable. It can be used as the basis for the design of the spacing and related parameters of the hydraulic fracturing borehole in the mine. (when the geological structure belt applies this method, the influence of this method should be taken into full consideration.) the technical comparison with the original fracturing borehole in the mine is carried out. When the spacing of hydraulic fracturing boreholes increases in two test sites, the difference of gas extraction rate in pre-pumped coal seam is very small, but the utilization ratio of fracturing boreholes increases obviously, which indicates that the design of original fracturing parameters is unreasonable, and the calculation method of fracturing parameters should be used. By optimizing the fracturing parameters, keeping the antireflection effect, reducing the fracturing cost and increasing the economic benefit, the economic cost of hydraulic fracturing in the test area and the extension area is compared with that of the original scheme. The economic benefits of the application of the research results in this paper are obtained.
【學(xué)位授予單位】：貴州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TD712.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 陽(yáng)友奎，肖長(zhǎng)富，邱賢德，吳剛;水力壓裂裂縫形態(tài)與縫內(nèi)壓力分布[J];重慶大學(xué)學(xué)報(bào)(自然科學(xué)版);1995年03期

2 楊宏偉;;低透氣性煤層井下分段點(diǎn)式水力壓裂增透[J];北京科技大學(xué)學(xué)報(bào);2012年11期

3 王國(guó)慶;謝興華;速寶玉;;巖體水力劈裂試驗(yàn)研究[J];采礦與安全工程學(xué)報(bào);2006年04期

4 林柏泉;李子文;翟成;比強(qiáng);溫永宇;;高壓脈動(dòng)水力壓裂卸壓增透技術(shù)及應(yīng)用[J];采礦與安全工程學(xué)報(bào);2011年03期

5 王國(guó)鴻;徐贊;;水力壓裂技術(shù)提高低透氣性煤層瓦斯抽放量淺析[J];煤礦安全;2010年08期

6 陳勉,龐飛,金衍;大尺寸真三軸水力壓裂模擬與分析[J];巖石力學(xué)與工程學(xué)報(bào);2000年S1期

7 李新平;汪斌;周桂龍;;我國(guó)大陸實(shí)測(cè)深部地應(yīng)力分布規(guī)律研究[J];巖石力學(xué)與工程學(xué)報(bào);2012年S1期

，

本文編號(hào)：1883918