Vertical tube-gear rack type pumping unit

A rack-type pumping unit technology, which is applied in the fields of production fluid, wellbore/well components, earthwork drilling and production, etc., can solve problems such as difficulty in manufacturing and installation, impact on service life, and heavy maintenance workload, and achieve Easy to manufacture and install, prolong service life, and short transmission line

Inactive Publication Date: 2004-06-23
李华林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The beamless pumping units in the prior art mainly include chain pumping units, belt pumping units and other types of linear drive pumping units. Because of the lateral force, not only the structure of the pumping unit becomes complicated and heavy, but also it is more difficult to manufacture and install
In addition, due to the

Method used

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  • Vertical tube-gear rack type pumping unit
  • Vertical tube-gear rack type pumping unit
  • Vertical tube-gear rack type pumping unit

Examples

Experimental program
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Example Embodiment

[0008] like figure 1 and figure 2 As shown, the riser rack type pumping unit of the present invention is mainly composed of a wellhead spool, a wellhead short joint, a riser, a sky wheel, a suspension rope, a rack, a sucker rod and a transmission mechanism. The wellhead spool 1 is installed and fixed at the oil wellhead, and an oil production wellhead 2 is arranged in the center thereof. The wellhead short joint 3 is located on the wellhead spool 1 and is connected to the wellhead spool 1 through the flange 4; a movable door is opened on the side thereof, and the oil production wellhead 2 can be maintained by opening the movable door. The riser 5 is located on the wellhead short joint 3 and is connected to the wellhead short joint 3 through the flange 6, the top of which is provided with a riser cap 7, and its periphery is sleeved with an annular balance weight 8 that can slide up and down along the riser 5; An anti-collision device 9 is provided on the outer wall of the ri...

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Abstract

The vertical tube-gear rack type pumping unit consists of four-way assembly in the well head with oil well head in the center, pup joint in the well head connected to the four-way assembly, vertical tube on the pup joint, connected via flange to the pup joint and with cap in the top and annular balance weight around it, hoisting sheave installed on the vertical tube cap and capable of rotation in front and inverse directions, weight suspending rope with one end connected to the balance weight, gear rack connected to the other end of the weight suspending rope, pumping rod connected via the well head to the reciprocating pump in the well, and transmission mechanism to drive the gear rack to reciprocate up and down. The present invention has simple structure, regular outer appearance, short transmission line, less transmission parts, easy maintenance and long service life.

Description

technical field [0001] The invention relates to a beamless pumping unit used for oil production in an oil field, in particular to a standpipe type rack pumping unit. Background technique [0002] Press, the pumping unit that is used for oil field oil production is mainly divided into two categories, namely beam pumping unit and non-beam pumping unit. The beamless pumping unit has the advantages of good balance effect and easy realization of long stroke, so it is widely used in the field of deep well oil production. The beamless pumping units in the prior art mainly include chain pumping units, belt pumping units and other types of linear drive pumping units. Because of the lateral force, not only the structure of the pumping unit becomes complicated and heavy, but also the difficulty of manufacture and installation is relatively large. In addition, due to the high speed of the motor, it must be decelerated by a reducer, resulting in a long transmission line, many transmiss...

Claims

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Application Information

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IPC IPC(8): E21B43/00
Inventor 李华林
Owner 李华林
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