Resurrection and resurrection high pressure gas well in Northwest Sichuan
China Petroleum Network News January 25th, "shock" over 150 days of ultra high pressure gas well 004-X1 well successfully "Resurrection", the daily output of about 130 thousand cubic meters. This is the first self - developed self - developed heating agent in southwest oil and gas field, which has been successfully applied to the plugging operation in ultra deep and ultra-high pressure sulphur bearing wells.
Long 004-X1 well is the main gas well in Jiulong Mountain gas field of Northwest Sichuan gas mine, with the highest pressure of 108 MPa in the closed well, which is the highest pressure in domestic production so far. At the beginning of September 2017, the wellhead near wellbore caused by hydrate. Because of the high control and well construction of ultra-high pressure and sulfur content, the effect of ethylene glycol removal is not good enough. The decline of temperature leads to the continuous expansion of wellbore embolism section, and is forced to shut down and shut down for 5 months.
In the southwest oil and gas field, the multiple units in the southwest oil and gas field have carried out the solution of plugging and tackling the problems. After 4 plans, the self heating chemical plugging scheme with low construction cost and high safety factor is preferred. Each unit closely, the independent design of 140 MPa anti sulfur betting device, successful ablation of 100 meters underground for hydrate ice plugging, plugging smoothly after the resumption of production.
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