PetroChina Coalbed Methane Company made a breakthrough in pressurized gas production technology for tight gas wells

China Petroleum Network News (Special Reporter Fang Liang, Correspondent Gao Xinhua Shang Qianfeng) On July 21, the reporter learned from PetroChina Coalbed Methane Company that the company's tight gas well site pressurized gas production technology was successfully tested in two well sites in Daji Block, and five low-pressure gas wells were converted from intermittent production to continuous production, and the daily recovery of natural gas production exceeded 40,000 cubic meters.

Since the beginning of the year, the western extension of the tight gas gathering and transportation pipeline network in the Daji block of the coalbed methane company has been affected by factors such as undulating terrain, large gathering and transportation radius, and liquid accumulation in the pipeline, and the overall pressure has increased, resulting in an increase in the backpressure of the wellhead of some gas wells, a decrease in the production pressure difference, and a gradual decrease in the daily production of gas wells, or even a shutdown.

In order to solve this problem, the Engineering Technology Research Center of Linfen Branch investigated the stimulation mode of low-pressure gas wells in other oilfields, combined with the production characteristics of the block, optimized the intelligent skid group of the vortex mixed gas pump, and carried out the well site pressurization test at the Daji 10-1 and Jiping 1H well sites, which effectively increased the wellbore production pressure difference and assisted in the implementation of measures such as bubble drainage, so as to further improve the liquid carrying capacity of the gas well and improve the production capacity of the gas well.

Compared with traditional compressors, the Vortex mixed air pump is not affected by the proportion of gas and liquid, and has a wide range of adaptability. The success of the pressurized gas production technology test at tight gas well sites has accumulated valuable experience for the subsequent pressurized production of tight gas well sites.