Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Technical Program of Trenchless Pipeline Directional Drilling Crossing Unfavorable Stratum
Trenchless pipeline directional drilling technology has been widely used in pipeline crossing. However, it is always inevitable to cross the unfavorable stratum during the pipeline directional drilling construction, which has become a difficult problem for pipeline directional drilling crossing technology and hinder its development and application. Therefore, unfavorable stratum including high-hardness rock, pebble gravel stratum, sand and soil stratum are researched and their lithologic character is analyzed. The Horizontal Directional Drilling (HDD) technical difficulties under the circumstances of unfavorable stratum are summarized and the possible adverse effects during construction process are predicted. For wellbore collapse, drilling fluid leakage, wellbore instability and low efficiency of breaking rocks, technical program is proposed on the basis of selection of drilling fluid, structure of stratum, drilling methods and method of using well casing. A new method is introduced for directional drilling crossing unfavorable stratum, which can decrease the construction risk in the condition of unfavorable stratum, reduce construction cost and guarantee construction period.
Technical Program of Trenchless Pipeline Directional Drilling Crossing Unfavorable Stratum
Trenchless pipeline directional drilling technology has been widely used in pipeline crossing. However, it is always inevitable to cross the unfavorable stratum during the pipeline directional drilling construction, which has become a difficult problem for pipeline directional drilling crossing technology and hinder its development and application. Therefore, unfavorable stratum including high-hardness rock, pebble gravel stratum, sand and soil stratum are researched and their lithologic character is analyzed. The Horizontal Directional Drilling (HDD) technical difficulties under the circumstances of unfavorable stratum are summarized and the possible adverse effects during construction process are predicted. For wellbore collapse, drilling fluid leakage, wellbore instability and low efficiency of breaking rocks, technical program is proposed on the basis of selection of drilling fluid, structure of stratum, drilling methods and method of using well casing. A new method is introduced for directional drilling crossing unfavorable stratum, which can decrease the construction risk in the condition of unfavorable stratum, reduce construction cost and guarantee construction period.
Technical Program of Trenchless Pipeline Directional Drilling Crossing Unfavorable Stratum
Huang, Yongshuo (Autor:in) / Zhang, Peng (Autor:in) / Duan, Yonghong (Autor:in) / Wu, Ying (Autor:in) / Long, Xianchun (Autor:in)
International Conference on Pipelines and Trenchless Technology 2011 ; 2011 ; Beijing, China
ICPTT 2011 ; 1957-1967
07.10.2011
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
| British Library Conference Proceedings | 1993
Trenchless directional drilling construction method for pipeline burying channel
| Europäisches Patentamt | 2021
Long-distance trenchless directional drilling sewage pipeline processing technology
| Europäisches Patentamt | 2020