Experiments for Selecting the Optimal Foam Drilling Fluid Formula

被引：3

作者：

Liu Yong ^{[1
]}

Li Qian ^{[2
]}

Yao Aiguo ^{[1
]}

Zhang Xianyong ^{[1
]}

机构：

[1] China Univ Geosci, Fac Engn, Wuhan, Peoples R China

[2] Chengdu Univ Technol, Coll Environm & Civil Engn, Chengdu, Peoples R China

来源：

CHEMISTRY AND TECHNOLOGY OF FUELS AND OILS | 2016年 / 52卷 / 03期

关键词：

soft coal; foam drilling fluid; foam producer; foam stabilizer; foam half-life; field test;

D O I：

10.1007/s10553-016-0713-2

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Drilling gas-drainage holes in soft coal seams is essential for preventing coal and gas explosions. After analyzing and summarizing the advantages and disadvantages of existing spiral drilling and wind-pressure drilling processes, a new technology of drilling in soft coal seams using a foam drilling fluid is proposed in this paper. Experiments were conducted to determine the optimal drilling fluid formula for drilling to depths greater than 200 m. The most effective foam stabilizers are selected and correlations of foam half-life and volume with stabilizer concentration were found. Based on an analysis and comparison of all drilling fluid formulas, the recommended additives are 5% K-12 + 0.6% Sesbania powder + 1.0% Konjac powder or 5% K-12 + 0.8% Sesbania powder + 1.0% HEC. In field tests, five holes deeper than 200 m were drilled successfully by using this formula.

引用

页码：340 / 345

页数：6

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