Pumping unit underground self-powered measurement device based on piezoelectric fibers
A technology of piezoelectric fiber and pumping well, which is applied in the direction of generator/motor, measurement, piezoelectric effect/electrostrictive or magnetostrictive motor, etc., which can solve the problem of limited underground space, affecting work, and poor pumping environment. It is well adapted to other problems and achieves the effect of simple structure and high accuracy
Inactive Publication Date: 2019-01-25
杭州中油智井装备科技有限公司
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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, some people try to put the cable down directly, but the cable is easily broken during the oil pumping process, and at the same time, it will interfere with the workover work
Method used
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[0025] Such as figure 1 and figure 2 and image 3 and Figure 4 and Figure 5 and Figure 6 and Figure 7 and Figure 8 and Figure 9 and Figure 10 and Figure 11 As shown, the oil pumping well is composed of a casing 1, an insulating centralizer 2, and an oil pipe 3, wherein the sucker rod 4 moves in the oil pipe 3. The downhole self-power supply device 5 is composed of a power supply part 51 and a measurement part 52. The existing sucker rod is generally connected by a coupling 6, and the measurement part 52 is replaced by the measurement part 52 at the position to be measured. The part 52 is installed between two sucker rods to replace the coupling. Both ends of the short joint housing 521 of the measuring part 52 are provided with internal threads, which can cooperate with the external threads of the sucker rod ends.
[0026]The power supply part 51 is fixed on the sucker rod 4. The power supply part 51 is composed of a piezoelectric fiber fixing frame 511, a v...
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The invention discloses a pumping unit underground self-powered measurement device based on piezoelectric fibers. The measurement device comprises a power supply portion and a measurement portion, thepower supply portion comprises a piezoelectric fiber fixed frame, a vibrating reed, a flow retaining sheet and the piezoelectric fibers, the measurement portion comprises a pup joint shell, an upperrubber sealing cover, an upper threaded sealing cover, a lower threaded sealing cover, an inner container sealing cover, an inner container shell, a sensor, a storage battery and a flexible printed circuit board, the power supply portion is fixed onto pumping rods, the measurement portion is mounted between the two pumping rods, and a coupling function can be replaced. When a pumping unit works,oil liquid can generate vortexes on the back of the flow retaining sheet in the vertical movement process of the pumping rod to drive the vibrating reed to vibrate, the vibrating reed drive the piezoelectric fibers to vibrate to generate power, and power is supplied for the measurement portion. A self-powered function of the measurement portion can be achieved, the device is simple in structure, convenient to install and high in adaptability and can be used for supplying power for various pumping unit underground measurement portions.
Description
technical field [0001] The invention relates to a measuring device, in particular, it is based on a self-powered measuring device for a piezoelectric fiber pumping unit downhole. 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 external threads, and the...
Claims
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IPC IPC(8): E21B47/00E21B41/00H02N2/18
CPCE21B47/00E21B41/0085H02N2/18H02N2/186
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