关于宁晋石盐田水平连通井堵塞成因的分析及认识
投稿时间:2021-01-12  修订日期:2021-06-09  点此下载全文
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张旭 河北省煤田地质局第二地质队 054001
郭家轩 河北省煤田地质局第二地质队 054001
中文摘要:经过20多年的发展,定向水平井连通法采卤技术虽已日渐成熟被广泛采用,但采卤井组在生产过程中经常出现由各种原因引起井堵的现象,针对这种普遍现象,本文从盐层蠕变挤破套管、夹石岩粉等杂物沉淀和盐结晶堵塞通道三个方面阐述了宁晋石盐田的井堵原因及预防措施,期许为以后卤井修井及新建卤井提供指导意义。
中文关键词:定向水平连通井  井堵  盐结晶  卤井修井
 
Analysis and understanding of the causes of plugging of horizontal connected wells in Ningjin rock salt field
Abstract:After more than 20 years of development, the brine extraction technology of directional horizontal well connection method has been widely used, but the well block phenomenon caused by various reasons often occurs in the production process of brine extraction well group. In view of this common phenomenon, this paper expounds the reasons of well plugging in Ningjin rock salt field from three aspects of salt bed creep breaking casing, debris precipitation with rock powder and salt crystal blocking channel And preventive measures are expected to provide guidance for future brine well workover and new brine wells
keywords:directional horizontal connected well  well plugging  salt crystallization  brine well workover
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