As one of the important types of unconventional gas,tight gas is widely distributed in various major petroliferous basins in the world.The breakthrough of reservoir reconstruction technology and the reduction of devel...As one of the important types of unconventional gas,tight gas is widely distributed in various major petroliferous basins in the world.The breakthrough of reservoir reconstruction technology and the reduction of development cost promote the scale and industrial development of tight gas.China is the third largest tight gas producer in the world and its yearly tight gas production is up to 470×10^(8) m^(3) in 2020.In order to evaluate the development prospect of tight gas in China,this paper systematically summarizes domestic key technical series developed in the last 20 years'tight gas practice,after briefly analyzing the distribution and development history of tight gas resources all over the world.Then,the prospect of tight gas development in China is based on CNPC's fourth resource evaluation results.And the following research results are ob tained.First,tight gas resource in China is abundant,accounting for about 10% of global resources,and its development is divided into two stages,i.e.the development evaluation stage and the development adjustment stage.Second,key technologies in the development evaluation stage include the establishment of genesis unit of effective reservoir,enrichment area selection,development index evaluation,well pattern and type optimization,reservoir reconstruction,and development scheme optimization.Third,the core in the development adjustment stage is enhanced gas recovery(EGR).The main technical means are well pattern optimization and infilling.Which can increase the recovery factor by 10%-20%.In addition,layer reviewing and reperforating,old well sidetracking,secondary fracturing,drainage and gas recovery,and pres surized production are also effective technologies.In conclusion,tight gas still has greater production potentials and development prospects in China.The potential tapping of produced proved reserves,the development of unproduced proved reserves and the effective development of new proved reserves are three important aspects to ensure the mid-and long-term development of tight gas.The first two aspects can support the yearly tight gas production to reach the peak of(700-800)108 m^(3) in 2030-2035 and keep stable production for more than 10 years.Moreover,the continuous development of new proved reserves will further support the stable production of tight gas until 2050-2060.展开更多
As of the end of 2009, the total installed capacity of Huaneng Group Corporation broke through 100 GW, thus, Huaneng Group became the largest power generation enterprise in the world.
基金Key Technology Research on Complex Natural Gas Field Development(No.2021DJ17)“Tight Gas Exploration and Development Technology Research”(No.2021DJ21)of the“14th Five-Year Plan”of China National Petroleum Corporation.
文摘As one of the important types of unconventional gas,tight gas is widely distributed in various major petroliferous basins in the world.The breakthrough of reservoir reconstruction technology and the reduction of development cost promote the scale and industrial development of tight gas.China is the third largest tight gas producer in the world and its yearly tight gas production is up to 470×10^(8) m^(3) in 2020.In order to evaluate the development prospect of tight gas in China,this paper systematically summarizes domestic key technical series developed in the last 20 years'tight gas practice,after briefly analyzing the distribution and development history of tight gas resources all over the world.Then,the prospect of tight gas development in China is based on CNPC's fourth resource evaluation results.And the following research results are ob tained.First,tight gas resource in China is abundant,accounting for about 10% of global resources,and its development is divided into two stages,i.e.the development evaluation stage and the development adjustment stage.Second,key technologies in the development evaluation stage include the establishment of genesis unit of effective reservoir,enrichment area selection,development index evaluation,well pattern and type optimization,reservoir reconstruction,and development scheme optimization.Third,the core in the development adjustment stage is enhanced gas recovery(EGR).The main technical means are well pattern optimization and infilling.Which can increase the recovery factor by 10%-20%.In addition,layer reviewing and reperforating,old well sidetracking,secondary fracturing,drainage and gas recovery,and pres surized production are also effective technologies.In conclusion,tight gas still has greater production potentials and development prospects in China.The potential tapping of produced proved reserves,the development of unproduced proved reserves and the effective development of new proved reserves are three important aspects to ensure the mid-and long-term development of tight gas.The first two aspects can support the yearly tight gas production to reach the peak of(700-800)108 m^(3) in 2030-2035 and keep stable production for more than 10 years.Moreover,the continuous development of new proved reserves will further support the stable production of tight gas until 2050-2060.
文摘As of the end of 2009, the total installed capacity of Huaneng Group Corporation broke through 100 GW, thus, Huaneng Group became the largest power generation enterprise in the world.
