Vertical-pipe pumping unit
An oil pumping unit and riser technology, which is applied in the field of riser oil extraction machines, can solve the problems of difficult to achieve long-stroke operation, bulky mechanical equipment, unreasonable structural design, etc., and achieves low vibration, high balance, and energy saving. consumption effect
Inactive Publication Date: 2002-12-11
李华林
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Problems solved by technology
[0002] At present, in my country's oilfield oil production machinery, there are beam pumping units and chain pumping units. The structural design of the chain pumping unit is not reasonable and is gradually eliminated; The transmission system is composed of rods, and the rotating beam is driven by the connecting rod to achieve reversing, and the weight of the sucker rod and the oil column are indirectly balanced by the rotating counterweight. The mechanical equipment is bulky, the balance is difficult to adjust, the energy consumption is large, and it is difficult to realize long-stroke operation. ,needs improvement
The Chinese patent "ZL98236411.3 A Positioning and Balanced Beam Pumping Unit" changes the balance device to a balance block suspended at the end of the beam or on the beam, which can make the working load of the power equipment more balanced and reduce the cost of the whole machine. Manufactured cost, but doesn't solve the upstroke problem
Method used
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Embodiment Construction
[0009] The following further describes the present invention with reference to the accompanying drawings and embodiments:
[0010] by figure 1 2. It can be seen that the riser pumping unit of the present invention includes a riser, a sucker rod, a balance weight, a motor, and a transmission system. The riser 1 has a built-in ball nut 2 and a ball screw 3 that mesh with each other, and the center of the ball nut passes through Sucker rod 4, fix the upper end of the sucker rod with a square clip, the upper end of the ball screw is supported on the top of the standpipe, the lower end is inserted into the gear box 5, and is connected with the transmission motor 6 fixed on the outer wall of the standpipe; the standpipe jacket is equipped with an annular balance block 7. A sky wheel 8 and a guide suspension rope 9 are provided on the top. One end of the guide suspension rope is connected with a ring-shaped balance block, and the other end is connected with a ball nut. A limit anti-colli...
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The vertical-pipe pumping unit includes vertical pipe, pumping rod, balancing block, motor and driving system. It is characterized by that there are ball nut ponetrate through the pump rod and ball screw inserted into gear box in the lower end and connected to the motor in the vertical pipe, and that there are ring balance block, hoisting pulley and guide suspending rope to connect the ring balance block and ball nut and centering wheel outside the vertical pipe. The present invention has the advantages of light weight, stable running and less vibration. The ball screw transmission mechanism can be used to determining the operating length and realize long-stroke operation, and the this can simplify structure, increase stroke, saving material, and reduce cost.
Description
(1) Technical field [0001] The invention belongs to an oilfield oil extraction machine, and particularly relates to a riser oil extraction machine in which the pumping unit is directly arranged above the wellhead. (2) Background technology [0002] At present, there are beam pumping units and chain pumping units in my country’s oilfield production machinery. The structure design of the chain pumping units is unreasonable and gradually phased out; the beam pumping units are driven by a motor to drive the rotating arm. The rod constitutes a transmission system, the swing arm connecting rod drives the walking beam to realize reversal, and the rotating counterweight indirectly balances the weight of the sucker rod and the oil column. The mechanical equipment is bulky, the balance is not easy to adjust, the energy consumption is large, and it is not easy to achieve long-stroke operations. ,needs improvement. The Chinese patent "ZL98236411.3 a positioning and balanced walking beam pump...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21B43/12F04B47/02F16H25/22
CPCE21B43/126F04B47/02F16H25/2204
Inventor 李华林
Owner 李华林