煤层气调查评价钻探保压取心钻具设计与试制

P634.43; 目前煤层气勘探取样常采用普通的绳索打捞取心钻具获取样品,并通过获取的样品解析结果来评价目标层的储气量.在取样过程和煤心转移过程中,随着外界压力的降低,加快了煤心中煤层气的逸散,从而无法准确评价目标地层的储气量.针对这一问题,项目组研制了煤层气保压取心钻具,在获取煤心的过程中,保压筒始终保持取样处的压力,并且保压筒可直接与解析设备连接,避免常规取样过程中煤层气的逸散,提高解析数据的准确性,从而为煤层气储量评价提供精确的依据.通过取心钻具的结构设计、保压筒的耐压设计、加工试制和保压测试表明,保压取心钻具取心直径为85mm,最大耐压能力为20Mpa,保压两个小时压力损失不超过最大耐...

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Published in地质与勘探 Vol. 55; no. 4; pp. 1045 - 1050
Main Authors 李小洋, 张永勤, 王汉宝, 梁健, 尹浩, 刘亚姣, 周阳
Format Journal Article
LanguageChinese
Published 中国地质科学院勘探技术研究所,河北廊坊,065000%上海金泰工程机械有限公司,上海,201805%东北煤田地质局勘察设计研究总院,辽宁沈阳,110013 01.07.2019
Subjects
保压取心
煤层气
保压测试
耐压设计
Online AccessGet full text
ISSN0495-5331
DOI10.12134/j.dzykt.2019.04.014

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Abstract P634.43; 目前煤层气勘探取样常采用普通的绳索打捞取心钻具获取样品,并通过获取的样品解析结果来评价目标层的储气量.在取样过程和煤心转移过程中,随着外界压力的降低,加快了煤心中煤层气的逸散,从而无法准确评价目标地层的储气量.针对这一问题,项目组研制了煤层气保压取心钻具,在获取煤心的过程中,保压筒始终保持取样处的压力,并且保压筒可直接与解析设备连接,避免常规取样过程中煤层气的逸散,提高解析数据的准确性,从而为煤层气储量评价提供精确的依据.通过取心钻具的结构设计、保压筒的耐压设计、加工试制和保压测试表明,保压取心钻具取心直径为85mm,最大耐压能力为20Mpa,保压两个小时压力损失不超过最大耐压值的7％,达到了设计和使用要求.
AbstractList P634.43; 目前煤层气勘探取样常采用普通的绳索打捞取心钻具获取样品,并通过获取的样品解析结果来评价目标层的储气量.在取样过程和煤心转移过程中,随着外界压力的降低,加快了煤心中煤层气的逸散,从而无法准确评价目标地层的储气量.针对这一问题,项目组研制了煤层气保压取心钻具,在获取煤心的过程中,保压筒始终保持取样处的压力,并且保压筒可直接与解析设备连接,避免常规取样过程中煤层气的逸散,提高解析数据的准确性,从而为煤层气储量评价提供精确的依据.通过取心钻具的结构设计、保压筒的耐压设计、加工试制和保压测试表明,保压取心钻具取心直径为85mm,最大耐压能力为20Mpa,保压两个小时压力损失不超过最大耐压值的7％,达到了设计和使用要求.
Author 王汉宝
周阳
李小洋
梁健
尹浩
张永勤
刘亚姣
AuthorAffiliation 中国地质科学院勘探技术研究所,河北廊坊,065000%上海金泰工程机械有限公司,上海,201805%东北煤田地质局勘察设计研究总院,辽宁沈阳,110013
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YIN Hao
ZHOU Yang
LI Xiaoyang
LIU Yajiao
LIANG Jian
ZHANG Yongqin
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耐压设计
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Snippet P634.43; 目前煤层气勘探取样常采用普通的绳索打捞取心钻具获取样品,并通过获取的样品解析结果来评价目标层的储气量.在取样过程和煤心转移过程中,随着外界压力的降低,加快...
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Title 煤层气调查评价钻探保压取心钻具设计与试制
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