Oil-pumping well head equipment
A technology for oil wellheads and polished rods, which is applied in wellbore/well components, earthwork drilling, sealing/package, etc. It can solve problems such as oil leakage at wellheads of pumping wells, economic losses in oil fields, and limited pressure bearing capacity of polished rod sealers. To achieve the effect of preventing oil theft, preventing environmental pollution, preventing oil theft and environmental pollution
Inactive Publication Date: 2003-09-24
于海涛
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Problems solved by technology
[0002] The current pumping wellhead device needs to be installed with a polished rod sealer. The polished rod sealer has a limited pressure bearing capacity. When the thieves close the oil outlet valve, the pumping unit is still pumping oil, and the pressure inside the tubing rises, and the polished rod sealer is under pressure. increase, it is easy to exceed the working pressure of the polished rod sealer, causing oil leakage at the wellhead of the pumping well, which causes crude oil loss on the one hand, and environmental pollution on the other hand, which brings great economic losses to the oil field.
The anti-theft oil wellhead device with the patent No. 00256059.3 can play a certain role in anti-theft oil, but it also needs to be installed with a light sealer, and oil production workers need to continuously tighten the light rod sealer to ensure that the wellhead does not leak oil. Large volume, inconvenient for remote well management
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[0010] Combine below figure 1 The first embodiment of the utility model will be described.
[0011] figure 1 Middle: 1 is a polished rod, 2 is a control body, 3 is a pressure isolation tube, 4 is a suspension body, 5 is a check valve, 6 is a shunt joint, 7 is an oil pipe, 8 is a pump barrel, and 9 is a plunger. That is, the utility model is made up of light 1 rod, control body 2, pressure isolation pipe 3, suspension body 4, check valve 5, shunt joint 6, oil pipe 7, pump cylinder 8, plunger 9. The lower part of the control body 2 is connected with the bushing, and the suspension body 4 is installed in the control body 2. The lower part of the suspension body 4 is connected to the upper large thread of the shunt joint 6, and the upper small thread of the shunt joint 6 is connected to the lower part of the pressure isolation tube 3. The pressure isolation tube 3 is in the Inside the suspension body 4, the upper part of the pressure isolation tube 3 cooperates with the suspensi...
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The present invention relates to an oil-pumping well head equipment. In the interior of control body a hanger is mounted, the lower portion of the hanger is connected with diverter connection upper large screw-thread, the diverter connection upper small screw-thread is connected with lower portion of pressure-isolating pipe, the pressure-isolating pipe is placed in a hanger, the upper portion of pressure-isolating pipe and hanger and combined to produce sealing action, between the lower portion of pressure-isolating pipe and hanger a circular space is formed, the diverter connection lower small screw-thread is connected with pump cylinder, the diverter connection lower large screw-thread is connected with oil pipe, on the side surface of diverter connection an one-way valve is mounted, the upper portion of the plunger is connected with polished rod.
Description
1. Technical field [0001] The utility model belongs to an oil pumping wellhead device for mechanical oil extraction in an oil field. 2. Background technology [0002] The current pumping wellhead device needs to be installed with a polished rod sealer. The polished rod sealer has a limited pressure bearing capacity. When the thieves close the oil outlet valve, the pumping unit is still pumping oil, and the pressure inside the tubing rises, and the polished rod sealer is under pressure. Increase, it is easy to exceed the working pressure of the polished rod sealer, so that the wellhead of the pumping well leaks oil, on the one hand, it causes crude oil loss, on the other hand, it causes environmental pollution, and brings great economic losses to the oil field. The anti-theft oil wellhead device with the patent No. 00256059.3 can play a certain role in anti-theft oil, but it also needs to be installed with a light sealer, and oil production workers need to continuously tighte...
Claims
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IPC IPC(8): E21B33/03
Inventor 于海涛王坤
Owner 于海涛