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요약정보
一种固井自愈合水泥浆性能评价实验方法探析 / An Experimental Method for Performance Evaluation of Self-healing Slurry
Resource Type
Academic Journal
Authors
李宁
;
赵宝辉
;
周波
;
袁中涛
;
冯少波
;
王银东
;
曾建国
;
LI Ning
;
ZHAO Baohui
;
ZHOU Bo
;
YUAN Zhongtao
;
FENG Shaobo
;
WANG Yindong
;
ZENG Jianguo
Source
钻采工艺 / Drilling & Production Technology
. 44(4):35-38
Subject
甲烷;自愈合水泥石;微裂缝;微观结构
Language
Chinese
ISSN
1006-768X
Online Access
Find it @ DONGA
초록
气井开采过程中,水泥石封隔失效后产生井口带压等问题,严重影响气井安全生产.针对塔里木油田天然气开采过程中存在的封隔问题,结合室内研发的遇气自愈合材料机理,对水泥石造缝和自愈合评价方式进行设计,探索出适用于天然气井封隔的自愈合材料与评价方法,其主要手段在于借助微观扫描技术,更直观观察微裂缝愈合和内部自愈合材料的膨胀效果.气体的自愈合材料在岩心产生微裂缝之后,具有良好的封隔效果,微裂缝渗透率从初始时刻1.9985 mD下降为0.01480 mD,下降幅度99.26%以上;岩心端面和内部显微图显示自愈合材料颗粒逐渐由白色变为淡黄色且发生膨胀愈合作用.结果表明该类自愈合材料可应用于天然气井在产生微裂缝后的愈合封堵.
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