临汾区块深层煤层气水平井定量化排采控制技术

P618.11; 为了实现临汾区块深层煤层气水平井定量化的排采控制,基于兰格缪尔等温吸附理论和生产特征分析,建立了煤层气水平井排采阶段划分方法,并通过计算确定了压降速度、理论稳产气量等关键控制参数,形成了五段三压式排采控制技术,即以产气变化为依据,将水平井排采过程划分为未见气、憋套压、产气上升、产气稳定与产气衰减5个阶段,再以初始压力、解吸压力、稳产压力为3个关键控制节点,计算得到未见气阶段压降速度为10～12 kPa/d,憋套压阶段暂缓降压,产气上升阶段压降速度为8 kPa/d,产气稳定阶段压降速度不超过2.5 kPa/d,产气衰减阶段压降速度为0.4 kPa/d.实践结果表明:五段三压式排...

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Published in煤炭学报 Vol. 43; no. z2; pp. 499 - 504
Main Authors 余莉珠, 师伟, 姚晓莉, 王海涛
Format Journal Article
LanguageChinese
Published 中石油煤层气有限责任公司临汾分公司,山西太原,030032 01.12.2018
Subjects
定量化
临汾区块
压降速度
煤层气水平井
控制技术
阶段划分
Online AccessGet full text
ISSN0253-9993
DOI10.13225/j.cnki.jccs.2017.1720

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Abstract P618.11; 为了实现临汾区块深层煤层气水平井定量化的排采控制,基于兰格缪尔等温吸附理论和生产特征分析,建立了煤层气水平井排采阶段划分方法,并通过计算确定了压降速度、理论稳产气量等关键控制参数,形成了五段三压式排采控制技术,即以产气变化为依据,将水平井排采过程划分为未见气、憋套压、产气上升、产气稳定与产气衰减5个阶段,再以初始压力、解吸压力、稳产压力为3个关键控制节点,计算得到未见气阶段压降速度为10～12 kPa/d,憋套压阶段暂缓降压,产气上升阶段压降速度为8 kPa/d,产气稳定阶段压降速度不超过2.5 kPa/d,产气衰减阶段压降速度为0.4 kPa/d.实践结果表明:五段三压式排采控制技术可操作性强,能够有效指导生产管理,实现深层煤层气水平井排采的定量化控制.
AbstractList P618.11; 为了实现临汾区块深层煤层气水平井定量化的排采控制,基于兰格缪尔等温吸附理论和生产特征分析,建立了煤层气水平井排采阶段划分方法,并通过计算确定了压降速度、理论稳产气量等关键控制参数,形成了五段三压式排采控制技术,即以产气变化为依据,将水平井排采过程划分为未见气、憋套压、产气上升、产气稳定与产气衰减5个阶段,再以初始压力、解吸压力、稳产压力为3个关键控制节点,计算得到未见气阶段压降速度为10～12 kPa/d,憋套压阶段暂缓降压,产气上升阶段压降速度为8 kPa/d,产气稳定阶段压降速度不超过2.5 kPa/d,产气衰减阶段压降速度为0.4 kPa/d.实践结果表明:五段三压式排采控制技术可操作性强,能够有效指导生产管理,实现深层煤层气水平井排采的定量化控制.
Author 王海涛
余莉珠
师伟
姚晓莉
AuthorAffiliation 中石油煤层气有限责任公司临汾分公司,山西太原,030032
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YAO Xiaoli
YU Lizhu
WANG Haitao
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Keywords 定量化
临汾区块
压降速度
煤层气水平井
控制技术
阶段划分
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Snippet P618.11; 为了实现临汾区块深层煤层气水平井定量化的排采控制,基于兰格缪尔等温吸附理论和生产特征分析,建立了煤层气水平井排采阶段划分方法,并通过计算确定了压降速度、理...
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Title 临汾区块深层煤层气水平井定量化排采控制技术
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