Design and Experiment of Downhole Hydraulic Packer for Coalbed Methane Subhorizontal Drilling

详细信息   

• 责任者：Wen Guojun （China University of Geosciences ; Wuhan 430074 ; China） ; Wu Xiaoming
• 刊名：Coal Geology & Exploration
• 出版年：2008
• 卷期：36(6)
• 关键词：煤层气 ; coalbed gas ; 水平孔 ; horizontal hole
• 页码：p.73-76
• 图表：7 illus.
• 分类号：1600
• issnNo：ISSN1001-1986
• isbnNo：CN61-1155/P

摘要

With the gradual exploitation of the global natural resources, many countries pay more attention to the coalbed methane (CBM) resources and invest to develop the relative new technologies and stimulation measures. It is an important supporting measure for enhancing the CBM recovery rate and safe coal extraction to master the detail CBM conditions in coalbed through the subhorizontal drilling in-situ exploring. Furthermore, the key of it is to realize the downhole hydraulic seal.This paper creates a new-type downhole hydraulic packer that can satisfy this requirement conveniently and quickly.