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- Title
沁水盆地煤层气田地面集输技术现状与展望.
- Authors
孟凡华; 马文峰; 刘红霞; 程相振; 韩东; 史丽苹
- Abstract
Over a decade of CBM development, the Qinshui Basin is now faced with more and more prominent problems in the process of system construction and operation, e.g. "three difficulties" (difficult land acquisition, difficult station construction and difficult pipeline arrangement), "three highs" (high investment, high idle capacity and high energy consumption) and "three differences" of produced water treatment (difference in water quality, difference in discharge standard and difference in water production). These problems cannot be solved only by taking the measures of cost reduction and efficiency improvement in the existing construction pattern. In this paper, the main and supporting technologies formed on the basis of existing gathering systems were summarized with the double factors of CBM productivity construction projects (i.e., construction and operation). Then, guided by the concept of low-cost construction, low-consumption operation and high-efficiency system, new technical ideas were proposed from the aspects of well pattern arrangement, station construction and pipeline network design after existing productivity construction mode and gathering system were modified. The new ideas involve three aspects. First, build a distributed ground gathering system, and set up a new overall gathering technology optimization mode characterized by "distributed point arrangement, dual-pipe preset, well-station joint construction and skid-mounted pressurization". Second, promote the concept of phased ground construction, figure out the coefficient that is suitable for the phased construction of skid-mounted equipment at stations, increase the equipment utilization ratio and adjust the design factors of gas production and gathering pipelines, so as to ensure a reasonable match between production capacity and transportation capacity of the system. Third, promote the skid-mounted technology of well-station joint construction and realize factory prefabrication and modularized construction, so as to cut down field workload, shorten construction period and consequently improve construction efficiency and quality. In conclusion, optimizing and adjusting the existing construction mode and system are not the essential solution to the investment reduction of this gas field, and the only way to increase the return on investment and improve the system adaptability essentially is to explore new productivity construction modes and solve the unconventional problems by extraordinary methods.
- Publication
Natural Gas Industry, 2018, Vol 38, Issue 5, p118
- ISSN
1000-0976
- Publication type
Article
- DOI
10.3787/j.issn.1000-0976.2018.05.014