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屏蔽暂堵工艺在气井修井上的应用评价

断块油气田

2006年 13卷第01期

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Title

Application and Valuation of the Technology of Shielding and Temporary P lugging on Gas Well Workover

单位

( 1 中原油气高新股份有限公司天然气产销厂 2 中原油田分公司采油五厂 3 中原石油勘探局井下作业一处)

Organization

Gas Produc ing& Marketing Factory,
Zhongyuan O il & Gas H -i New Stock Co. Ltd. ,
SINOPEC, Puyang 457061, China

摘要

随着气藏压力逐年下降, 气层抗污染能力逐渐减弱。为了减少修井过程中的储

层损害, 文章介绍了气井屏蔽暂堵工艺。开发的屏蔽暂堵剂YLZ- I具有良好的流变性和可

泵性, 固化时间可根据需要调节, 性能稳定, 强度高, 解堵后地层渗透率恢复值不低于95%。

文92- 47等井的现场应用表明, 该工艺简单易行, 在气井修井过程中能暂时封堵气层, 修井结

束后成功解堵, 有效地保护气层。

Abstract

W ith dropp ing o f pressure in gas reservo ir year by year,
pow er on w ith po llution o f gas zone dec lined by inches. In
o rder to lessen harm to rese rvo ir in w e llw orkover process, this
artic le introduces the techno logy o f sh ie ld ing and temporary
p lugg ing on gas w e l.l And sh ie ld ing and tem porary plugg ing
agent has good rheo log ical character istics and pumpability,
cong elation time can adjust in ligh t o f need, wh ich is steady in
perform ance, h igh in strength. In-place perm eab ility can be
recovered no than 95% afte r it is broken daw n by the agent.
Field applica tion in W e ll W en 92-47 ind ica tes that the
techno logy is easy to ope rate, can be va lid and tem po ra ry to
p lug in w ell w orkover process, succeed to break dow n after
w e llw orkover finished, and pro tect gas reservo ir valid ly.

关键词：

气层;储层损害;屏蔽暂堵;简单易行;保护气层;

Keywords:

Gas zone, H arm to reservo ir, Shie lding and
tem po rary plugg ing, Easy to operate, Protect gas zone;

基金项目

DOI