Piezoelectric-fiber-self-powered-based underground signal measurement and wireless transmission system of pumping unit
A signal measurement, piezoelectric fiber technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motor, generator/motor, measurement, etc., can solve the problems of difficult construction and high cost, and solve the construction difficulty Large, high accuracy, high cost to solve the effect
Inactive Publication Date: 2019-01-15
杭州中油智井装备科技有限公司
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Problems solved by technology
[0006] The purpose of the present invention is: to overcome the deficiencies of the prior art, to provide a pumping unit oil well downhole signal measurement and wireless transmission system, which can realize the self-power supply of the device, simple structure, convenient installation, strong adaptability, and solve the problems existing in the prior art. Due to the high cost and difficulty of construction, different installation methods can be adopted according to different well depths to adapt to different working environments
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[0029] As shown in the figure, the oil pumping well is composed of a casing 1 , an insulating centralizer 2 , and a tubing 3 , wherein a sucker rod 4 moves in the tubing 3 . The downhole self-power supply device 5 is composed of a power supply part 51 and a signal measurement and wireless transmission part 52. The existing sucker rod is generally connected by a collar 6, and the signal measurement and wireless transmission part 52 is connected to the collar at the position to be measured. 6 is replaced by the signal measurement and wireless transmission part 52, the signal measurement and wireless transmission part 52 is installed between two sucker rods to replace the coupling, the two ends of the short joint housing 521 of the signal measurement and wireless transmission part 52 All are provided with internal threads, which can cooperate with the external threads of the sucker rod end.
[0030] The power supply part 51 is fixed on the sucker rod 4. The power supply part 51 i...
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The invention discloses a piezoelectric-fiber-self-powered-based underground signal measurement and wireless transmission system of a pumping unit. The underground signal measurement and wireless transmission system comprises a plurality of signal measurement and wireless transmission devices and a ground wireless transmitting / receiving device. The signal measurement and wireless transmission devices are used for replacing hoops to connect a sucker rod. When the sucker rod moves up and down, oil generates eddy currents at the back of a blocking piece, a vibration piece is driven to make vibration, and the vibration piece drives a piezoelectric fiber to generate electric energy. Sensor signal processing circuits, wireless transmitting and receiving circuits and main control circuits and thelike are arranged on flexible printed circuit boards in the signal measurement and wireless transmission devices. With ground communication based on a ZigBee wireless communication protocol, the self-powered underground wireless communication of the device is realized. The underground signal measurement and wireless transmission system having a simple structure is convenient to install and has high adaptability. Problems of high cost and high construction difficulty in the prior art are solved; and high adaptability to different working environments is realized by using different mounting ways according to different wall depths.
Description
technical field [0001] The present invention relates to oil field downhole monitoring technology, in particular to oil well downhole direct reading monitoring technology, specifically a pumping unit downhole signal measurement and wireless transmission system based on piezoelectric fiber self-power supply. 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 allo...
Claims
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IPC IPC(8): E21B47/06E21B47/07E21B47/00E21B47/13E21B41/00H02N2/18
CPCE21B41/0085E21B47/00E21B47/06E21B47/07E21B47/13H02N2/186
Inventor 魏燕定沈佳何光玉宋执环
Owner 杭州中油智井装备科技有限公司