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"Independently developed tubing buckle centralizers, which effectively straighten the lower tribe fish, improve the efficiency of buckle connection and the success rate of buckle
.
" In recent years, the workover team of the Southwest Engineering Company Underground Operations Branch has been like this.
The team established a "coiled tubing" and "workover" professional research team based on on-site production problems and needs, introduced and absorbed cutting-edge and high-end technologies, carried out targeted research, and continuously enhanced the team's technical research and innovation capabilities
.
They also systematically summarized new processes, new technologies, complex conditions, and key well construction experience, organized the exchange of experience in tapping the potential of old wells in western Sichuan, and shale gas coiled tubing drilling and grinding through well bridge plug operations, encouraging employees to invent and innovate.
The design and processing of coiled tubing inverted pipe safety ladders is an outstanding example of the team's achievements in mass technological innovation
.
In the past, working in an environment with no operating platform for coiled tubing required personnel to perform high-altitude operations, which caused inconvenience in installation of the blowout preventer and a potential safety hazard
In the shale gas area, soluble bridge plugs are easy to form cements, mixed with a large amount of fracturing sand, and it is easy to form a plugging point in the wellbore, and it is easy to accumulate high-pressure trap pressure below the plugging point.
During the plugging process, the sticking risk is high and the timeliness is low
.
In order to continuously optimize the coiled tubing drilling and grinding technology, the team formed the "third-generation shale gas well coiled tubing drilling and grinding soluble bridge plug technology" by optimizing bit selection, fluid performance and process control
The application on the Weiye 37 platform has been successful.
The -3, -5, and -8 wells have an average of 17 bridge plugs per well, and the drilling and grinding through wells are completed in one trip, and the overall construction time efficiency has increased by 40%
.
Weiye 37-5HF well drilled and drilled through the well.
Coiled tubing bypassing the barrier and plugging technology has been successfully used in the Hejia 203H well, which is not easy
.
The team used coiled tubing with a screw motor to successfully remove the obstacles in the well (the safety valve plate that fell off), and injected 1.
(Yin Xiang)
