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A METHOD FOR THE EXTRACTION OF HYDROCARBON

机译:烃萃取方法

摘要

This disclosure relates to a method to facilitate the extraction of hydrocarbon from a coal seam gas formation. In one aspect, the method comprises steps of: (a) drilling a wellbore using a drill string to access the coal seam gas formation; (b) perforating a section of the drill string; (c) abandoning a section of the drill string in the wellbore; (d) setting a temporary plug to isolate the abandoned section of the drill string and the wellbore; (e) installing a production tubing string above the temporary plug, so as to create a fluid passageway to facilitate the extraction of hydrocarbon; (1) displacing a fluid above the temporary plug, so as to create a high pressure differential; (g) removing the temporary plug, so as to create an initial stimulated reservoir volume to extract hydrocarbon from the coal seam gas formation and, resultantly, at least partially filling an annulus formed between the abandoned section of the drill string and the wellbore wall with coal fragments; and (h) continuing to extract hydrocarbon from the coal seam gas formation via the fluid passageway, at a high pressure drawdown, so as to create an expanding stimulated reservoir volume.
机译:本公开涉及一种促进煤缝气体形成烃的方法。在一个方面,该方法包括以下步骤:(a)使用钻柱钻孔以进入煤缝气体的形成; (b)穿孔钻柱的一部分; (c)放弃井筒中的钻柱的一部分; (d)设定临时插头以隔离钻柱和井筒的废弃部分; (e)在临时插头上方安装生产管柱,以便制造流体通道,以便于提取烃; (1)在临时塞上方移位流体,以产生高压差; (g)去除临时塞子,以便创造初始刺激的储存量,以从煤层气形成中萃取烃,并且结果至少部分地填充在钻柱和井筒墙的废弃部分之间形成的环形煤碎片; (H)继续通过流体通道从煤层气形成中萃取烃,在高压缩小,以产生扩张的刺激储存量。

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