Self-powered down-hole signal measurement and wireless transmission system for oil pumping units based on principle of electromagnetic induction power generation
A technology of signal measurement and electromagnetic induction, which is applied in the field of downhole direct reading monitoring of oil wells, downhole signal measurement and wireless transmission system of pumping units, can solve the problems of difficult construction and high cost, and achieve the solution of difficult construction, high accuracy, Achieve the effect of cable-free direct reading test
Inactive Publication Date: 2019-01-11
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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[0026] 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 the two sucker rods to assume the role of the coupling 6, the two parts of the short joint casing 521 of the signal measurement and wireless transmission part 52 Both ends are tapped with internal threads, which can cooperate with the external threads of the sucker rod end.
[0027] The power supply part 51 is fixed on the sucker rod 4, and the...
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The invention discloses a self-powered down-hole signal measurement and wireless transmission system for oil pumping units based on the principle of electromagnetic induction power generation. The system is composed of a plurality of signal measurement and wireless transmission devices and a ground wireless transmission / reception device. The signal measurement and wireless transmission devices canreplace couplings to connect sucker rods. In each stroke of an oil pumping unit, the flow of oil makes blades rotate, and a micro motor is thus driven to generate electric energy. A flexible printedcircuit board in each measurement and wireless transmission device is equipped with a sensor signal processing circuit, a wireless sending and receiving circuit and a main control circuit. Through a ZigBee wireless communication protocol and ground communication, self-powered down-hole wireless communication of the devices is realized. The self-powered down-hole signal measurement and wireless transmission system has the advantages of simple structure, convenient installation and high adaptability. The problems of high cost and difficult construction in the prior art are solved. Different installation methods can be adopted according to different well depths to adapt to different working environments.
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 self-powered pumping unit downhole signal measurement and wireless transmission system 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 ma...
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IPC IPC(8): E21B47/009E21B43/00E21B47/12H02J7/32
CPCE21B43/121E21B47/008E21B47/12H02J7/32
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