At present, the situation of energy shortages and the combined effects of various national encouragement policies have promoted the development and utilization of coal-bed methane in China to enter a golden period of development. However, the industry is increasingly worried about the sharp contradiction between the development and transportation bottleneck of coalbed methane. Not long ago, at the 2009 China Coal to Natural Gas/CBM (International) Summit held in Ordos, Inner Mongolia, this issue once again became a topic of discussion among experts and corporate representatives. It is generally believed that the massive development of coalbed methane requires the “backing†of the natural gas pipeline network.
“At present, the main contradiction in the large-scale development and utilization of coalbed methane in China is the transport bottleneck.†Yang Jianhong, deputy director of the Oil and Gas Pipeline Engineering Planning Institute of the China Petroleum Planning Institute, told reporters. Yang Jianhong pointed out that the dependence of gas energy on pipeline transportation is very strong, and coal seam gas cannot enter the pipeline network, which means that this bottleneck cannot be solved.
Sun Maoyuan, chairman of China Coalbed Methane Co., Ltd., China’s largest CBM development and utilization company, also holds the same view. Sun Maoyuan complained to reporters that China’s coalbed methane network infrastructure is weak, which disconnects the CBM production area from the market. The market demand can not play a strong role in promoting the development of coalbed methane, causing a significant increase in the cost of CBM development and increasing the risk of CBM projects. CBM companies must not only build the internal pipe network in minefields, but also consider the construction of long-distance pipeline networks. Exorbitant costs affect the economic efficiency of enterprises and their enthusiasm for the development of coalbed methane.
It is understood that at present, the longest coal-bed gas pipeline in the country is only 35 kilometers, and the total length of coal-bed gas pipeline is less than 50 kilometers. From the perspective of the distribution of coalbed methane pipelines throughout the country, they are mainly concentrated in the Qinshui Basin and the Ordos Basin, and the pipelines of each enterprise are self-contained, develop on the spot, and are not interconnected with each other, let alone built and shared networks. In the 13 years of development of the coalbed methane industry in China, the annual growth rate of the total length of the pipeline is even lower than 5 kilometers.
The grim reality faced by the construction of China's coalbed methane pipeline network has attracted widespread industry concerns. How to break this bottleneck? Sun Maoyuan believes that CBM and natural gas can be mixed and mixed, and both have common market users. The unified utilization of “two gases†is entirely feasible. They belong to gaseous energy and are both hydrocarbons. Their use of their calorific value makes it easy to replace each other. “Two gases†adopt the same pipe network transmission method and naturally can use the same pipe. Network transmission, and can use the same storage, maintenance and management methods.
Yang Jianhong analyzed that the current "two gas" co-ordination has already met the conditions. The national “Eleventh Five-Year Plan†proposed to speed up the development and utilization of coalbed methane. In addition to a series of CBM preferential policies and measures that have been introduced, CBM can be preferentially incorporated into the natural gas pipeline network and urban public Tracheal network. Since only coal-bed gas that meets the quality standards of natural gas is allowed to be integrated into the natural gas pipeline network system, coal-bed gas with lower methane content must be blended with high-concentration coalbed methane or mature and practical thickening processes to achieve safety or be compatible with natural gas. Interchangeable temperament. CBM utilization has entered the urban gas sector. The key issue is safety and access.
Yang Jianhong said that there is a huge potential for natural gas in China, and CBM is an important supplementary gas source. It is estimated that the national natural gas demand in 2020 will be 250 billion to 290 billion cubic meters. It is expected that conventional natural gas production will not fully meet demand, and imported natural gas and unconventional natural gas are important supplements. At present, the national backbone natural gas pipeline network has taken shape. By the end of 2008, natural gas pipelines such as the West-to-East Gas Pipeline, the Shaanxi-Beijing System, the Zhongwu Line, and the Shibuya-Ninglang Pipeline have been built. By 2015, a national natural gas pipeline network will be formed, which is expected to cover the entire country. More than 300 cities at or above the prefecture level and all CBM blocks with scaled production conditions.
How to make coal bed methane "back up" natural gas pipeline network "backing"? Yang Jianhong believes that in view of the planning of the pipeline network, to match the CBM and natural gas, the national “two gas†overall plan must plan and plan the CBM in different blocks in an integrated manner. There are four major coalbed methane production bases in China. One is the Qinshui Basin in Shanxi Province. The coalbed methane network is close to the national natural gas pipeline network and has been developed by China United Coal, PetroChina, and local companies. The co-ordination of the three CBM resources can achieve scale production and optimize the flow. On the basis of meeting the local market gas demand, CBM can enter the West-East Gas Pipeline. The second is the block of Hancheng District in the Ordos Basin, which is also close to the national natural gas pipeline network. The regional pipeline network is relatively developed. In the near future, it is mainly to meet the market surrounding the gas field, taking into account the nearest regional pipeline network, and it can be gradually considered into the natural gas pipeline network. The third is the Zhungeer block in the Ordos Basin, which is far from the national main pipeline network. It is necessary to consider three types of gas sources: coalbed methane, coal-based natural gas, and new natural gas from Ordos. When planning the pipeline network, consider the possibility of combining three types of gas sources. Some of the gas sources can be transported to the Bohai Rim to the east; the fourth is the Changji block of the Zhungeer Basin, which belongs to the marginal gas field. Its pipe network planning should consider meeting the surrounding market's branch lines, and the CBM utilization should be based on the nearest project.
Industry experts also pointed out that the construction of coal-bed methane networks and their incorporation into the national natural gas backbone network involve multiple interests across provinces, regions, and different landlords. Coordinated work is very difficult and the road to go is long. To this end, it is necessary for relevant national departments to take the lead in coordinating and planning the construction of the “two gas†pipeline network. First, three kinds of gas sources such as coalbed methane, natural gas, and coal-based natural gas should be comprehensively considered to coordinate the owners and producers and strive for common organization. Gas source, unified pipe network; Second, unified regional pipe network of different gas sources, nearest use, and through the national backbone gas transmission network; third is to balance the price, to balance the gas prices between different gas sources to reach all parties Satisfaction and mutual benefit.
“At present, the main contradiction in the large-scale development and utilization of coalbed methane in China is the transport bottleneck.†Yang Jianhong, deputy director of the Oil and Gas Pipeline Engineering Planning Institute of the China Petroleum Planning Institute, told reporters. Yang Jianhong pointed out that the dependence of gas energy on pipeline transportation is very strong, and coal seam gas cannot enter the pipeline network, which means that this bottleneck cannot be solved.
Sun Maoyuan, chairman of China Coalbed Methane Co., Ltd., China’s largest CBM development and utilization company, also holds the same view. Sun Maoyuan complained to reporters that China’s coalbed methane network infrastructure is weak, which disconnects the CBM production area from the market. The market demand can not play a strong role in promoting the development of coalbed methane, causing a significant increase in the cost of CBM development and increasing the risk of CBM projects. CBM companies must not only build the internal pipe network in minefields, but also consider the construction of long-distance pipeline networks. Exorbitant costs affect the economic efficiency of enterprises and their enthusiasm for the development of coalbed methane.
It is understood that at present, the longest coal-bed gas pipeline in the country is only 35 kilometers, and the total length of coal-bed gas pipeline is less than 50 kilometers. From the perspective of the distribution of coalbed methane pipelines throughout the country, they are mainly concentrated in the Qinshui Basin and the Ordos Basin, and the pipelines of each enterprise are self-contained, develop on the spot, and are not interconnected with each other, let alone built and shared networks. In the 13 years of development of the coalbed methane industry in China, the annual growth rate of the total length of the pipeline is even lower than 5 kilometers.
The grim reality faced by the construction of China's coalbed methane pipeline network has attracted widespread industry concerns. How to break this bottleneck? Sun Maoyuan believes that CBM and natural gas can be mixed and mixed, and both have common market users. The unified utilization of “two gases†is entirely feasible. They belong to gaseous energy and are both hydrocarbons. Their use of their calorific value makes it easy to replace each other. “Two gases†adopt the same pipe network transmission method and naturally can use the same pipe. Network transmission, and can use the same storage, maintenance and management methods.
Yang Jianhong analyzed that the current "two gas" co-ordination has already met the conditions. The national “Eleventh Five-Year Plan†proposed to speed up the development and utilization of coalbed methane. In addition to a series of CBM preferential policies and measures that have been introduced, CBM can be preferentially incorporated into the natural gas pipeline network and urban public Tracheal network. Since only coal-bed gas that meets the quality standards of natural gas is allowed to be integrated into the natural gas pipeline network system, coal-bed gas with lower methane content must be blended with high-concentration coalbed methane or mature and practical thickening processes to achieve safety or be compatible with natural gas. Interchangeable temperament. CBM utilization has entered the urban gas sector. The key issue is safety and access.
Yang Jianhong said that there is a huge potential for natural gas in China, and CBM is an important supplementary gas source. It is estimated that the national natural gas demand in 2020 will be 250 billion to 290 billion cubic meters. It is expected that conventional natural gas production will not fully meet demand, and imported natural gas and unconventional natural gas are important supplements. At present, the national backbone natural gas pipeline network has taken shape. By the end of 2008, natural gas pipelines such as the West-to-East Gas Pipeline, the Shaanxi-Beijing System, the Zhongwu Line, and the Shibuya-Ninglang Pipeline have been built. By 2015, a national natural gas pipeline network will be formed, which is expected to cover the entire country. More than 300 cities at or above the prefecture level and all CBM blocks with scaled production conditions.
How to make coal bed methane "back up" natural gas pipeline network "backing"? Yang Jianhong believes that in view of the planning of the pipeline network, to match the CBM and natural gas, the national “two gas†overall plan must plan and plan the CBM in different blocks in an integrated manner. There are four major coalbed methane production bases in China. One is the Qinshui Basin in Shanxi Province. The coalbed methane network is close to the national natural gas pipeline network and has been developed by China United Coal, PetroChina, and local companies. The co-ordination of the three CBM resources can achieve scale production and optimize the flow. On the basis of meeting the local market gas demand, CBM can enter the West-East Gas Pipeline. The second is the block of Hancheng District in the Ordos Basin, which is also close to the national natural gas pipeline network. The regional pipeline network is relatively developed. In the near future, it is mainly to meet the market surrounding the gas field, taking into account the nearest regional pipeline network, and it can be gradually considered into the natural gas pipeline network. The third is the Zhungeer block in the Ordos Basin, which is far from the national main pipeline network. It is necessary to consider three types of gas sources: coalbed methane, coal-based natural gas, and new natural gas from Ordos. When planning the pipeline network, consider the possibility of combining three types of gas sources. Some of the gas sources can be transported to the Bohai Rim to the east; the fourth is the Changji block of the Zhungeer Basin, which belongs to the marginal gas field. Its pipe network planning should consider meeting the surrounding market's branch lines, and the CBM utilization should be based on the nearest project.
Industry experts also pointed out that the construction of coal-bed methane networks and their incorporation into the national natural gas backbone network involve multiple interests across provinces, regions, and different landlords. Coordinated work is very difficult and the road to go is long. To this end, it is necessary for relevant national departments to take the lead in coordinating and planning the construction of the “two gas†pipeline network. First, three kinds of gas sources such as coalbed methane, natural gas, and coal-based natural gas should be comprehensively considered to coordinate the owners and producers and strive for common organization. Gas source, unified pipe network; Second, unified regional pipe network of different gas sources, nearest use, and through the national backbone gas transmission network; third is to balance the price, to balance the gas prices between different gas sources to reach all parties Satisfaction and mutual benefit.
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