年产百亿立方米以上大气田在中国天然气工业发展上的重大意义

The significance of giant gas fields with annual output of more than 10 billion cubic meters in the development of natural gas industry in China

中国年产天然气100×10^(8)m^(3)以上大气田,以达目标年份次序为克拉2气田(2007年)、苏里格气田(2010年)、安岳气田(2015年)和克拉苏气田(2020年)。苏里格气田年产100×10^(8)m^(3)达10年并以年产274.71×10^(8)m^(3)成为中国年产最高的气田。根据原始储量丰度、原始储量大小和储集层性质,4个年产100×10^(8)m^(3)以上大气田可分两类:一类为克拉2气田,原始储量丰度高、孔隙度高、渗透率高、原始储量相对少,连续年产100×10^(8)m^(3)以上年份短;二类为克拉苏气田、苏里格气田和安岳气田,原始储量丰度低、孔渗低而原始储量大,连续年产100×10^(8)m^(3)以上年份长。2020年中国年产气1925×10^(8)m^(3),4个年产100×10^(8)m^(3)以上大气田总产气589.94×10^(8)m^(3),占全国总产气量的30.6%,具有重大意义。

According to the year when the annual gas production output is above 10×10^(9)m^(3),the giant gas fields in China are Kela2(year 2007),Sulige(year 2010),Anyue(year 2015)and Kelasu(year 2020)gas fields.Sulige gas field maintains an annual output of 10×10^(9)m^(3)for 10 years and has the highest annual output in China of 27.471×10^(9)m^(3).According to the abundance of original reserves,the size of original reserves and reservoir properties,the four giant gas fields with an annual output of 10×109 m^(3)can be divided into two types.The first type is the Kela2 gas field which has high abundance of original reserves,high porosity,high permeability,relatively small size original reserves,and short plateau production years with a continuous annual output of 10×10^(9)m^(3).The second type includes Kelasu,Sulige and Anyue gas fields,which are characterized by low abundance of original reserves,low porosity and permeability,but large original reserves size,and long duration with continuous annual output of more than 10×10^(9)m^(3).In 2020,China had an annual gas production of 192.5×10^(9)m^(3),and the four giant gas fields with an annual output of more than 10×10^(9)m^(3)had total gas output of 58.994×10^(9)m^(3),accounting for a significant 30.6%of the total national gas production,which is of great significance.