A circulation mud system used in long-distance ore pipeline transportation

2011 ◽  
Author(s):  
Youling Li ◽  
Hua Wang
Keyword(s):  
Pipeline Transportation ◽  
Long Distance

A Mathematical Model for the Pipeline Transportation of Soft Clay

2013 ◽  
Vol 275-277 ◽  
pp. 1476-1479 ◽  
Author(s):  
Wan Zhen Zhu ◽  
Shu Hui Wu ◽  
Song Lei Tao
Keyword(s):  
Mathematical Model ◽  
Flow Field ◽  
Soft Clay ◽  
Pipeline Transportation ◽  
Long Distance

We have found a way of a pipeline transportation of soft clay in order to overcome the difficulties to transport soft clay so that the long distance transportation of soft clay becomes true in Engineering. By analyzing the properties of soft clay and pipeline transportation, the rules of decreasing energy through the pipeline transportation, and the characters of flow field with gas, liquid and mud, we have obtained a mathematical model for the pipeline transportation of soft clay. The model not only builds up a theory for the non-continuous soft clay column pipeline transportation techniques but also leads to further developments and wider applications of the pipeline transportation of soft clay.

A New Technique of Low-Pressure Long-Distance Soft Clay Pipeline Transportation

2012 ◽  
Vol 446-449 ◽  
pp. 2763-2769
Author(s):  
Song Lei Tao ◽  
Xing Ge Lian ◽  
Zi He Zhang ◽  
Yuan Hong Yu ◽  
Zhi Fang Zhao
Keyword(s):  
Soft Clay ◽  
Low Pressure ◽  
New Technique ◽  
Pipeline Transportation ◽  
Long Distance ◽  
A New Technique

Long-distance gas medium pipeline transportation - coal as an example

2009 ◽  
Author(s):  
Yongsheng Qian ◽  
Xiaoting Yin ◽  
Peng Sun ◽  
Zhengzheng Ren ◽  
Zhidan Lv
Keyword(s):  
Pipeline Transportation ◽  
Long Distance ◽  
Gas Medium

Study on Pipeline Transportation Experiment of Paste Filling Material

2012 ◽  
Vol 503-504 ◽  
pp. 987-990
Author(s):  
Jin Xiao Liu ◽  
Wei Jia Guo ◽  
Zeng De Yin
Keyword(s):  
Coal Mine ◽  
Simulation System ◽  
Filling Material ◽  
Pipeline Transportation ◽  
Long Distance ◽  
Material Parameters

The change law of basic paste material performance in the pipeline must be studied to verify long distance transportation in coal mine after the ratio of paste material is completed. This paper introduced simulation system which was developed by us and the pipeline transportation experiment was done. The change law of paste material parameters was studied including collapsed slump, segregation degree and density with pipeline experiment. And the contents of this paper could provide theoretical guidance for field paste filling.

Reliability-Based Scheme Design for Fault-Crossing of X90 Pipeline

2014 ◽  
Vol 1030-1032 ◽  
pp. 2601-2607
Author(s):  
Yu Qing Liu ◽  
Zhen Yong Zhang ◽  
Kai Wen
Keyword(s):  
Failure Probability ◽  
Oil And Gas ◽  
Theoretical Foundation ◽  
Design Method ◽  
Influence Factors ◽  
Steel Grade ◽  
Pipeline Transportation ◽  
Long Distance ◽  
Reliability Design ◽  
Scheme Design

While high steel grade X70, X80 pipeline has been widely used in long-distance oil and gas pipeline engineering of China, to further improve steel grade to X90 is an effective way to increase the efficiency of pipeline transportation and reduce construction cost. In this paper, the failure probability of earthquake fault crossing of X90 pipeline has been calculated with the strain-based reliability design method and the design scheme has been adjusted according to sensitivity analysis with influence factors of the failure probability of fault-crossing of X90 pipeline, after that the scheme of fault-crossing of X90 pipeline which meets requirements of pipeline reliability has been figured out. This study has laid a theoretical foundation for the application of X90 pipeline in future construction of pipeline engineering.

A New Technique of Low-Pressure Long-Distance Soft Clay Pipeline Transportation

2012 ◽  
Vol 446-449 ◽  
pp. 2763-2769
Author(s):  
Song Lei Tao ◽  
Xing Ge Lian ◽  
Zi He Zhang ◽  
Yuan Hong Yu ◽  
Zhi Fang Zhao
Keyword(s):  
High Efficiency ◽  
Surface Film ◽  
Soft Clay ◽  
Low Pressure ◽  
New Technique ◽  
Pipeline Transportation ◽  
Long Distance ◽  
Pressure Pipeline ◽  
A New Technique ◽  
Air Column

A new technique of long-distance pipeline transportation of soft clay, which is related to Non Newton--Bingham pipe flow studies. Propose a method of non-continuous pneumatic conveying method with surface film lubrication, which will obviously reduce the friction between pipe wall and mud column and the Viscous resistance of clay. The air is injected to form air-column between mud columns. Adjust the lengths of mud column and air column and their proportion, and make the pushing force bigger than or near equivalent to the resistant force, until the optimum air-mud ratio for the required delivery distance is achieved. Long distance transportation of soft clay through low pressure pipeline is achieved. The method, with the features of energy-saving, high efficiency, profitable, can be applied in fields of water conservancy, petroleum, chemical, mining, and environmental protection, etc.

Research on Pricing Formulation Method for Long Distance Natural Gas Pipeline Network Transporting

2012 ◽  
Author(s):  
Xiaoyu Li ◽  
Qiang Xu ◽  
Minghua Zhao ◽  
Chengwen Qian ◽  
Jing Jin ◽  
...  
Keyword(s):  
Natural Gas ◽  
Operation Mode ◽  
Gas Pipeline ◽  
Pipeline Transportation ◽  
Long Distance ◽  
Gas Industry ◽  
Pipeline Network ◽  
Pricing Mechanism ◽  
Natural Gas Pipeline ◽  
Natural Gas Industry

With the completion of the second line project of West-East Gas Transmission in 2011, the third line of West-East Gas Transmission will be started soon and the fourth line and the fifth line will be started in recent five years. China will form one of the largest natural gas pipeline network in the world. The gas supply mode will be changed from single gas source and single-pipeline supply to multi-source and multi-pipeline supply through regulation and coordination, which will impact on existing pricing mechanism and operation mode of Chinese natural gas industry violently. Depending on the development trend of natural gas pipeline network, the regionalization management mode of natural gas pipeline will be implemented gradually. Chinese natural gas industry also needs to develop a new-type market-oriented operation mode with clear interfaces between production, transportation, distribution and customers so as to facilitate the optimal allocation of resources. By the customized scientific research of CNPC (China National Petroleum Corporation), combining with existing pricing mechanism of natural gas pipeline and economic characteristics of long-distance natural gas pipeline transportation in China, the paper studied the pricing mechanism problem of combined transportation of multi-source and mutli-pipeline gas supply in the regionalization management mechanism, presented the idea of pricing formulation method of two kinds of pipeline network transportation based on standard rates of pipeline transportation and service cost rules, formed pricing formulation system of natural gas pipeline transportation, introduced the design idea, structural construction, distribution method and key points of natural gas pipeline transportation in details, and demonstrated the methods by example calculation. The methods presented in the paper can meet the pricing requirements of natural gas pipeline network transportation, remedy the defect in existing price accounting mechanism, solve the problem that the income and expenses among different interest bodies are not balanced, and facilitate the rapid development of natural gas pipeline business.

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