【Haichuan Chemical Plant Site】Well 2, which has produced over 5 billion cubic meters of gas in total and is known as the \"King of Gas in China\"

The Ziliujing gas field is one of the earliest antiform gas fields to be developed in the world. Salt production began during the reign of Emperor Zhang of the Eastern Han Dynasty (76 AD), and salt wells were dug in the present-day Gongjing area during the Southern and Northern Dynasties (420–589 AD) – specifically the Dagong Well, which is now 1685 years old. In 1850, the Mozi Well was drilled and the Jiasan gas reservoir was discovered; it was then known as the \"King of Gas Wells,\" with a daily gas production of over 100×104 m3. After the establishment of the People’s Republic of China, starting from the production commencement at Well 2 in May 1960, the development of the Ziliujing gas field focused on three gas-bearing areas: the structural top zone, the Baimiao high point, and the East Fault Zone. On April 18, 1960, a wellbore leak occurred during drilling at Well 2, and powerful gas currents rushed out. The staff and workers of Drilling Team 3209 from the Yuanlongchang Gas Mine risked their lives to carry out rescue efforts one after another. Eleven colleagues fainted at the scene of the rescue. After 29 days and nights of arduous struggle, they finally brought this powerful gas flow under control, and the well was put into safe operation on May 16, 1960.

At the beginning of its operation, Well 2 could produce up to 2 million cubic meters of natural gas per day; in that same year, Sichuan’s total annual natural gas production was 1.02 billion cubic meters, of which Well 2 alone contributed 484 million cubic meters. It thus accounted for half of Sichuan’s natural gas production, earning it the title of “King of Natural Gas in China”. From the gasification of Zigong in the 1960s to the development of China’s first CNG vehicle and the construction of China’s first natural gas refueling station. Well 2 has laid an important energy foundation for local economic development.

Over 60 years, there were 6 instances of \"critical condition\" in Well 2: the drill collar perforation in 1983； The booster pump’s role in 1989 ； Liquid nitrogen descaling in 1991 ； Decontamination of screw drills in 1992 ； Reaming of drill collars in 1995 ； Casing hosing cleaning for deblocking in 2015. The feat of six rescues carried out over three generations has become a legend recorded in the history of these two wells, providing future generations with valuable experience in the art of extracting air from water. In 1990, the Sichuan Petroleum Administration awarded Well 2 the title of “Meritorious Gas Well”. In Zigong, Sichuan, there is a gas well known as the \"King of Gas Tigers in China\". Do you know where it is? Today, this well is still in production. A total of over 5 billion cubic meters of natural gas have been produced. Assuming that a family of three uses one cubic meter of natural gas per day, this amount is sufficient to meet the needs of Sichuan Province for half a year. It is equivalent to replacing more than 9 million tons of coal, thereby reducing carbon dioxide emissions by more than 7 million tons. Calculated using the methods of the **Statistics Bureau’s Economic Conditions Center, its economic contribution to public health exceeds 6 billion yuan.

【Haichuan Chemical Industry Site】Industrial site complex of the Shengdengshan gas field in Longchang Gas Mine https://bbs.hcbbs.com/thread-3002727-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Forum Website)

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Zigong is the City of Salt, and its unique salt culture is what adds charm to our culture. As the carriers of this culture, salt wells deserve even more of our attention~ Especially you young people, do you know that? The earliest well in the Zigong area – Fuyi Well; the well of which the people of Yandu are proud – Ziliujing Well; the well that supplied salt to the emperor – Gongjing Well; the well that served as a checkpoint for salt exported from Zigong – Dengjing Well; the well located in front of the Temple of the Jade Emperor – Jinliujing Well; the well buried under railway tracks – Xianhai Well; the well with the smallest diameter – Yongxing Well; the “pit well” without a proper wellbore – YanYang Well; the well that emerged from a river – Shuangxi Well; the well dug near a thatched toilet – Qingyu Well; the well squeezed between several other wells – Honghai Well; the well with many bends – Longchao Well; the well that connected two other wells – Baozhu Well; the well separated by a river – Deshen Well; the well with a very large interior space – Tianxing Well; the well that destroyed 60 other wells due to its “connected cavity” structure – Changfa Well; the well that was extinguished by just one bucket of water – Tianlong Well; the well that went dormant for decades before erupting again – YiLiu Well; the “meritorious well” that produced 4.4 billion cubic meters of gas over 30 years – ZiEr Well; the well drilled using “foreign machinery” – Zhengde Well; the well from which 150,000 cubic meters of fluid was extracted in one blast – Yuanfeng Well; the well that could produce “imperial medicine water” – Jinhai Well; the “king of brine” wells in the eastern and western areas – Yongchao Well; the well that pumped out a thousand dan of brine per day – Shuangfu Well; the saltiest well at Gongjing Salt Field – Hongwang Well; the well that produced low-pressure gas for nearly a century – Dongyuan Well; the top-tier well equipped with double-barrel pumping systems – Linhai Well; the world’s earliest well exceeding 1,000 meters in depth – Shenhai Well; the oldest well still in use today – Xiaoqiao Well; the first well known as a “fire king well” – Mozi Well; the first saltstone well – Fayuan Well; the first well with a large-diameter saltstone borehole – Yanyuan Well; the first well drilled using “foreign machinery” – Dingxin Well; the first well equipped with dual-pumping systems – Baohai Well; the first well that used electricity for pumping brine – Licheng Well; the first well that used locomotives to pump water – JiSheng Well; the first well that used a “brine pumping device inside a tube” – Fuyuan Well