Underground self-power supply measuring device based on principle of electromagnetic induction power generation

Abstract

The invention discloses an underground self-power supply measuring device based on the principle of electromagnetic induction power generation. The underground self-power supply measuring device comprises a power supply part and a measuring part. The power supply part includes power supply part brackets and micro power generation devices; the two power supply part brackets are connected by bolts and then are fixed at sucker rods; and a plurality of square holes are formed in the power supply part brackets and are used for placing the micro power generation devices. The measuring part includesa short section housing, an inner container close cover, an inner container housing, a storage battery, a flexible printed circuit board, a sensor, a threaded close cover and a rubber sealing plug. The power supply part is fixed at the sucker rods; and the measuring part is installed between the two sucker rods and is capable of replacing a coupling. When the sucker rods move up and down, oil flows and thus blades rotate, and thus the micro motors are driven to generate power to provide power for the underground measuring part, so that the self power supply of the measuring part is realized. Moreover, the underground self-power supply measuring device has advantages of simple structure, great convenience in mounting, and high adaptability and can be applied to power supply of the underground measuring parts of various pumping units.

Description

technical field [0001] The invention relates to a measuring part, in particular to an underground self-powered measuring device based on the principle of electromagnetic induction power generation. Background technique [0002] In today's oil extraction engineering, there are various oil extraction methods, but the most important one is the rod extraction method. Rod oil production uses a slender sucker rod to connect to an oil pump thousands of meters underground, and the pumping unit fixed on the ground drives the sucker rod to move up and down to achieve the purpose of pumping. [0003] The sucker rod is a slender rod of the pumping well, it is connected to the rope hanger of the pumping unit on the top, and the pump is connected to the bottom to transmit power. The length of a single sucker rod is 7.62, 8 or 9.14 meters. The material is generally low-carbon alloy steel after quenching and tempering treatment. The two ends of a single sucker rod are processed into extern...

AI Technical Summary

Problems solved by technology

"A Downhole Force Measurement Part of Sucker Rod" published by Patent Network (Application No.: 201310399077.6) Although this downhole force measurement part can be connected to the sucker rod to test the downhole pressure by designing a test nipple, but its The power supply is powered by a large-capacity battery. In fact, the underground space is very limited, and it is impossible to provide a large-capacity battery. It is inconvenient to charge. It can only be taken out and replaced during workover. Once the workover period is long, the battery may be used up. run out, affecting work

The "downhole sealed load sensor" (application number: 200910072873.2) published by the patent network is similar to the former, but it also does not solve the aforementioned problems

The common self-powered measurement part, such as "a tension-compression vibration energy harvester" published by the patent network (application number: 201510007482.8), is a kind of vibrating body that drives the inertial block to move so that the piezoelectric vibrator vibrates to generate electricity, but the invention is One end is fixed on the vibrating body, which is not well adapted to the oil pumping environment

In addition, there are also attempts to put the cables down directly, but the cables are easily broken during the oil pumping process, and at the same time, the wiring will interfere with the workover work

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