China's first offshore gas storage is opened for gas supply

On December 7, the Nanpu 1-29 gas storage built in Jidong Oilfield began to supply natural gas, marking the first round of gas supply in China
.

It is reported that Nanpu 1-29 gas storage is located on the No.
2 artificial island of Nanbao in Jidong Oilfield, which is the first oil reservoir in China to be converted into an offshore gas storage
reservoir.
Following the principle of "few wells and high efficiency", the gas storage has a designed effective storage capacity of 1.
814 billion cubic meters and a working gas capacity of 1.
052 billion cubic meters
.
Up to now, the Nanpu 1-29 gas storage has a cumulative gas injection of 177 million cubic meters, a working gas capacity of 150 million cubic meters, and a daily gas supply of 400,000 cubic meters
.

The picture shows the construction site of the Nanpu No.
2 artificial island gas storage site
.
Photo by Yang Jun

The reporter learned that in order to improve the expansion and production speed of the first offshore reservoir reconstruction gas storage reservoir, Jidong Oilfield carried out dynamic tracking and evaluation, injection and production parameter optimization and high-pressure nitrogen-assisted pressure reduction and injection and other research, which effectively alleviated the gas injection situation of "strong point and weak surface", and the daily gas injection volume can reach up to 1.
5 million cubic meters, laying a solid foundation
for stable gas production.

At the same time, in order to ensure a safe and stable gas supply this winter and next spring, the oilfield made relevant preparations in advance for the transition from the gas injection period to the gas production period, dynamically adjusted the gas injection and production operation plan, and carefully formulated the gas production operation arrangement
。 Comprehensively carry out risk investigation for the gas production process system; Implement the winter prevention and insulation work in advance, do a good job in the commissioning of production support equipment such as heating furnaces and electric heaters, strive to ensure the safe and stable operation of the gas production process in the peak shaving stage, and actively implement ground construction safeguard measures, combine the existing electric heaters to provide heat load, strengthen the identification of on-site facilities and operation activities, and carry out risk identification of gas production activities, etc.
, to meet the gas supply production capacity
of 400,000 cubic meters per day with peak shaving capacity.

It is reported that during the "14th Five-Year Plan" period, Jidong Oilfield will build six gas storage reservoirs
, including Nanpu 1-29, Baogu 2, Nanpu 1-5, and Nanpu No.
2 Qianshan.
After completion and put into use, the gas storage group of Jidong Oilfield will become the gas storage center of North China, effectively improving the capacity of natural gas peak shaving and supply in the Beijing-Tianjin-Hebei region, which plays an important role
in ensuring national energy security and promoting the economic development of the Beijing-Tianjin-Hebei region.