Electromagnetical linearly adjusted flux device for down-hole injection-production

Abstract

The invention relates to a device for electromagnetic linear adjustment of underground injection production flow rate, which consists of an adjustable electromagnetic signal emitter arranged in a position of an underground pipe column corresponding to an offset bottom-hole regulator; the pipe column of the bottom-hole regulator is provided with an electromagnetic signal receiver, a connecting electric drive controller and a connecting drive motor in turn; an output shaft of the drive motor is in spiral connection with a valve handle; and the lower end of the valve handle is connected with a valve ball on a valve seat. The electromagnetic signal emitter is overhung in the underground pipe column by steel wire pulled by a winch through a pulley; and an emitting window of the electromagnetic signal emitter corresponds to the electromagnetic signal receiver. An electronic testing and adjusting device is arranged on an eccentric hole of each layer of the bottom-hole regulator in the water injection well, automatically tracks according to measured results and carries out on-line measurement and adjustment to the water injection volume in each layer. The device for electromagnetic linear adjustment of underground injection production flow rate can set the water injection volume of each underground layer on the ground and automatically track steady-flow water injection according to the injection allocation volume, thereby radically solving the difficult problems in the injection allocation production of the oil field water injection well, reasonably utilizing the resource to exploit petroleum and saving water resource.

Description

technical field [0001] The invention belongs to a method for linearly adjusting stratified flow of oil and water well eccentric pipe string water distribution (production) devices in oil fields, in particular to an electromagnetic linearly adjusting downhole injection-production flow device. Background technique [0002] Current prior art (patent No.: 200410081195, 200510107732,) the former is to adopt the cable to send the measuring and adjusting instrument into the downhole production distribution interval from the ground, and adjust the mechanical valve installed on the downhole eccentric water distribution (production) device to Complete downhole stratified flow control. The working principle of the latter is similar to that of the former, except that the measuring and adjusting instrument is powered by batteries, and steel wires are used to send the measuring and adjusting instrument into the required interval. The former requires a lot of ground production equipment, ...

AI Technical Summary

Problems solved by technology

The former has a lot of producing equipment on the ground, complex process, inconvenient operation, and high cost of testing and adjusting a well

The latter requires multiple measurement and adjustment instruments to complete a measurement and adjustment, which is difficult to construct.

What's more important is that both of them have to lift the measuring and adjusting instrument to the ground after the measuring and adjusting is completed. The stratified flow rate that has just been measured and adjusted changes with the change of formation pressure, which makes the early measuring and adjusting work almost in vain.

Moreover, the measurement and adjustment process of the two is complicated, the ground is not easy to grasp, the production cost is high, and the best effect cannot be achieved.

Images