Application of High Density and Low Filtration Drilling Fluid System in Wire-Line Coring Drilling of Coalfield Exploration
详细信息
- 责任者：Chen Erzhi (State Key Laboratory of Geohazard Prevention and Geoenvironment Protection ; Chengdu 610059 ; China) ; Chen Liyi
- 刊名：Exploration Engineering
- 出版年：2011
- 卷期：38(2)
- 关键词：钻井液性能 ; drilling fluid property ; 绳索取心 ; wire line coring
- 页码：p.15-18
- 图表：3 tables, 10 refs.
- 分类号：2000
- issnNo：ISSN1672-7428
- isbnNo：CN11-5063/TD
摘要
It is very difficult in the coalfield drilling process because rather complex strata are usually encountered. Such as breaking layer, collapsing layer and hydration expansive layer. Heavy density and low filtration drilling fluid system were developed with anti-sloughing, inhibiting and proper density. Field application proves that the drilling fluid system can perfectly maintain borehole stability and effectively inhibit the hydration expansion of mud stone and shale with the accident rate in wire-line coring drilling decreased.