【摘要】：為了深入研究煤層壓裂,提高煤層壓裂效果,總結(jié)分析了煤層壓裂液、壓裂支撐劑、壓裂裂縫數(shù)值模擬、裂縫監(jiān)測(cè)、煤層壓裂設(shè)計(jì)及施工工藝的現(xiàn)狀。通過(guò)對(duì)比分析得出,活性水與石英砂組合是淺層煤層氣壓裂的主要組合方式,但隨著深度的增加,儲(chǔ)層地質(zhì)復(fù)雜性的增強(qiáng),該組合壓裂后的效果逐漸變差;傳統(tǒng)的二維和擬三維裂縫模擬方法在煤層應(yīng)用中具有局限性,需要根據(jù)煤儲(chǔ)層地質(zhì)特征對(duì)裂縫模擬方法進(jìn)行優(yōu)化;多種裂縫監(jiān)測(cè)方法在煤層應(yīng)用中的結(jié)果表明,煤儲(chǔ)層壓裂后主要呈現(xiàn)出貫穿煤層的垂直裂縫、垂直裂縫與水平裂縫組合的復(fù)雜裂縫和非對(duì)稱網(wǎng)絡(luò)裂縫3種形態(tài)。我國(guó)已探索出以活性水直井壓裂為主,水力波及壓裂和間接壓裂等多種壓裂工藝為輔的壓裂工藝技術(shù)。最后對(duì)煤層壓裂提出了展望,即在低成本和高效環(huán)保的前提下,從增加煤層改造體積和增大解吸面積的壓裂機(jī)理出發(fā),結(jié)合煤巖工程地質(zhì)特征,優(yōu)選壓裂材料及配套壓裂技術(shù),為煤層氣的合理高效開(kāi)發(fā)提供理論指導(dǎo)。
[Abstract]:In order to deeply study coal seam fracturing and improve coal seam fracturing effect, the present situation of coal seam fracturing fluid, fracturing proppant, fracturing fracture numerical simulation, fracture monitoring, coal seam fracturing design and construction technology are summarized and analyzed. Through comparative analysis, it is concluded that the combination of active water and quartz sand is the main combination of shallow coalbed methane fracturing, but with the increase of depth and the increase of geological complexity of reservoir, the effect of this combination becomes worse gradually after fracturing. Traditional 2D and pseudo-3D fracture simulation methods have limitations in coal seam application, and need to optimize fracture simulation methods according to the geological characteristics of coal reservoir, and the results of various fracture monitoring methods in coal seam application show that, After the coal reservoir fracturing, there are three types of fracture: vertical fracture through coal seam, complex fracture and asymmetric network fracture combined with vertical fracture and horizontal fracture. In China, fracturing techniques, such as active water straight well fracturing, hydraulic wave fracturing and indirect fracturing, have been explored. Finally, the prospect of coal seam fracturing is put forward, that is, under the premise of low cost and high efficiency and environmental protection, according to the fracturing mechanism of increasing coal seam reconstruction volume and increasing desorption area, combining with the engineering geological characteristics of coal and rock, the fracturing materials and matching fracturing technology are optimized. It provides theoretical guidance for the rational and efficient development of coalbed methane.
【作者單位】： 莫斯科國(guó)立羅蒙諾索夫大學(xué)地質(zhì)系;西南石油大學(xué)油氣藏地質(zhì)及開(kāi)發(fā)工程國(guó)家重點(diǎn)實(shí)驗(yàn)室;陜西海荔石油機(jī)械有限公司;
【基金】：國(guó)家科技重大專(zhuān)項(xiàng)資助項(xiàng)目(2016ZX05044004-002)
【分類(lèi)號(hào)】：TE377

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