At present, there are three common methods for downhole liquid level monitoring in oil and gas Wells: direct reading downhole electronic pressure gauge, storage electronic pressure gauge and wellhead acoustic level gauge. The high precision digital direct reading downhole electronic pressure gauge produced by our company has been applied stably in gas Wells of 3000 meters.
Aiming at some problems existing in conventional downhole monitoring equipment, our company innovatively designed and developed a wireless downhole fluid level monitoring system. The wireless downhole fluid level monitoring technology can recover the downhole fluid level data without moving the string or carrying out workover operations when the downhole electronic pressure gauge is abnormal in the put into operation coalbed methane Wells. The application of this technology can not only avoid the workover operation caused by the damage of the pressure gauge, save operating costs, but also avoid the influence of well condition and gas volume caused by the workover operation. In particular, the effect on high production horizontal Wells is more significant.
Wireless monitoring technology performance advantages:
1. Wireless downhole liquid level monitoring technology is mainly composed of portable intelligent control cabinet on the ground, signal collector and signal ball, without downhole cable, realizing wireless transmission of downhole liquid level
2. Due to damage of downhole electronic pressure gauge in high-yield Wells or special key Wells, it can realize non-inspection pump and accurately enroll downhole liquid level data
3. A set of wireless downhole fluid level monitoring system integrates remote data transmission function, which can realize the remote transmission of all pumping equipment and production data in the well site without automatic control. A set of system integrates multiple functions and effectively reduces production and operation cost
4. The system can be moved flexibly and freely, which is not affected by production and environment