Device USES:

With the percentage of heavy oil and high pour-point oil well drilling increases gradually, my company for many problems in the process of heavy oil and high pour-point oil mining (such as; crude oil lifting difficulty, sucker rod under the heavy load, and sucker rod pumping unit load downward, crude oil into the pump difficulties, etc.), successfully developed a hollow sucker rod electric heating device, can effectively solve the high pour-point and high viscous oil, all kinds of technical problems encountered in the process of mining.

1.5.2.2, device characteristics

A, simple construction: after the normal operation of the hollow sucker rod, the cable with the cable winch into the hollow sucker rod hole, and then good loop cable, well open after preheating, can do homework in the day, the day away.

B, simple to set up on the ground, easy to use, easy to manage: compared with common sucker rod shaft, ground equipment only added a dedicated power supply device, the structure is simpler.

C, uniform heating temperature, high thermal efficiency, can realize automatic temperature control: due to the direct heating sucker rod rod body, so the heat loss is small, and can realize the full heating sucker rod.

D, because of the crude oil viscosity decrease after heating, descending resistance is reduced, so the sucker rod can increase the effective stroke of plunger, to improve the pump efficiency, prolong pump inspection cycle.

E, safe and reliable structure, good repeatable operation: when the pump inspection, only need the cable with cable winch is put forward, then all sucker rod, cable and rod can be reused.

F, crude oil viscosity, sucker rod friction resistance is reduced, pumping unit stroke load decreases, and the travel speed, can effectively improve the condition of pumping unit load.

1.5.2.3, device structure and working principle:

A, device works:

Hollow rod is electric heating device inside the hollow sucker rod through the cable and rod rod body form a loop, is connected to ac power frequency, using the principle of skin effect in the walls of the hollow sucker rod generate heat, oil inside the tubing heat all the way, in order to improve the tubing in oil temperature, reduce the viscosity of crude oil, improve its liquidity, prevent wax precipitation of crude oil from the tubing, thus effectively mining high pour-point and high viscosity, high waxy crude oil.