【摘要】：致力于開發(fā)煤系氣的合采技術(shù)是國(guó)內(nèi)現(xiàn)有非常規(guī)能源發(fā)展的重點(diǎn)。通過(guò)對(duì)煤系氣的地質(zhì)特征及合采煤系氣的產(chǎn)出機(jī)理進(jìn)行分析,采用正確的生產(chǎn)工藝及合理的井下管柱是實(shí)現(xiàn)煤系氣合采作業(yè)的前提條件。通過(guò)對(duì)雙管柱合采技術(shù)進(jìn)行分析,針對(duì)上部為煤層,下部為高壓產(chǎn)氣層的煤系氣合采環(huán)境,設(shè)計(jì)出了較為適用的煤系氣合采工藝。構(gòu)造出雙管柱合采煤系氣結(jié)構(gòu),并建立了管柱尺寸的選取模型,再通過(guò)分析計(jì)算管柱是否滿足連續(xù)生產(chǎn)作業(yè)來(lái)判定所涉及的雙管柱合采技術(shù)對(duì)于煤系氣合采作業(yè)的可適用性。分析得出:雙管柱合采技術(shù)可用于煤系氣的合采作業(yè),并依據(jù)地質(zhì)條件,給出了不同尺寸井口條件下煤層最大產(chǎn)水與高壓產(chǎn)層最大產(chǎn)氣量的關(guān)系,對(duì)今后更深入的煤系氣合采技術(shù)研究提供了一定的參考。
[Abstract]:It is the focus of unconventional energy development in China to develop combined production technology of coal measure gas. Based on the analysis of the geological characteristics of coal measure gas and the production mechanism of combined coal measure gas, the correct production technology and reasonable downhole pipe string are the precondition to realize coal measure gas combined production. Based on the analysis of the combined mining technology of double tubing columns, a more suitable coal measure gas combined mining technology is designed in view of the coal-measure gas production environment in which the upper part is coal seam and the lower part is high pressure gas producing bed. The gas structure of coal mining system with double pipe column is constructed, and the model of pipe string size selection is established, and then the applicability of the two pipe column combined mining technology to coal measure gas mining is determined by analyzing and calculating whether the pipe string meets the continuous production operation. According to the geological conditions, the relationship between the maximum water production of coal seam and the maximum gas production of high pressure layer under different sizes of wellhead conditions is given. It provides a certain reference for the further study of coal measures gas recovery technology in the future.
【作者單位】： 中國(guó)石油大學(xué)(華東)機(jī)電工程學(xué)院;中聯(lián)煤層氣有限責(zé)任公司;
【基金】：國(guó)家油氣科技重大專項(xiàng)資助項(xiàng)目(2016ZX05066004-002,2017ZX05042003-001) 中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(16CX02004A)
【分類號(hào)】：TE375

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