Oil production system of reciprocating submersible electric pump driven by sand-proof linear motor

A technology of linear motor and submersible electric pump, which is applied to machines/engines, pumps with flexible working elements, pumps, etc., can solve problems such as damage to linear motors, failure to work normally, and shortening of the service life of linear motors, so as to prolong the service life. effect of life

Inactive Publication Date: 2009-12-09
DAQING OILFIELD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a reciprocating electric submersible pump oil production system driven by a sand control linear motor, which can solve the problem that the linear motor used in the reciprocating electric submersible pump oil production system does not have functions such as sand control. Impurities such as dirt, oil, and scale easily enter the gap between the mover and stator of the linear motor, causing the linear motor to be stuck and unable to work normally. In the long run, the linear motor will be damaged, the service life of the linear motor will be reduced, and it will also affect the reciprocating submersible. Problems with the normal operation of the oil pump oil recovery system

Method used

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  • Oil production system of reciprocating submersible electric pump driven by sand-proof linear motor
  • Oil production system of reciprocating submersible electric pump driven by sand-proof linear motor
  • Oil production system of reciprocating submersible electric pump driven by sand-proof linear motor

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specific Embodiment approach 1

[0007] Specific implementation mode one: combine Figure 1 ~ Figure 4 Describe this embodiment, this embodiment is made up of tubing 1, casing 2, reciprocating plunger pump 4, linear motor 5, drainer 3, wellhead 7, cable 8 and frequency conversion speed regulation control device 9; Wellhead 7 is fixed on The upper end of the casing 2, the oil pipe 1 is arranged in the casing 2, the upper end of the oil pipe 1 is fixedly connected with the lower end of the wellhead 7, and the oil drain 3 is installed in the oil pipe 1; the outlet end of the reciprocating plunger pump 4 is connected with the oil pipe 1 is fixedly connected to the lower end, the lower end of the reciprocating plunger pump 4 is fixedly connected to the upper end of the linear motor 5, one end of the cable 8 is connected to the terminal of the linear motor 5, and the other end of the cable 8 is connected to the frequency conversion speed control device 9 Connection; the reciprocating plunger pump 4 is a reciprocati...

specific Embodiment approach 2

[0008] Specific implementation mode two: combination figure 1 , figure 2 and Figure 12 Describe this embodiment, the reciprocating plunger pump 4 of this embodiment is a reciprocating layered combined production plunger pump 10, and the reciprocating layered combined production plunger pump 10 is composed of the first upper oil well pump 13, the first The packer 14, the lower oil pipe 15 and the lower oil well pump 16 are composed; the lower end of the oil pipe 1 is fixedly connected with the upper end of the first upper oil well pump 13, and the lower end of the first upper oil well pump 13 is fixedly connected with the upper end of the linear motor 5 , the lower oil pipe 15 is located at the lower end of the linear motor 5, the upper end of the lower oil pipe 15 is fixedly connected with the linear motor 5, the outer wall of the lower oil pipe 15 is fixedly equipped with a first packer 14, and the lower oil well pump 16 is connected to the linear motor 5. Made into one; ...

specific Embodiment approach 3

[0010] Specific implementation mode three: combination figure 1 and image 3 Describe this embodiment, the reciprocating plunger pump 4 of this embodiment is a reciprocating layered combined production double-suction plunger pump 11, and the reciprocating layered combined production double-suction plunger pump 11 is controlled by the second upper oil well pump 17. The second packer 18, the second lower oil pump 19, the screen pipe 20 and the plug 21; the lower end of the oil pipe 1 is fixedly connected with the upper end of the second upper oil pump 17, and the lower end of the second upper oil pump 17 is connected with The upper end of the linear motor 5 is fixedly connected, the lower end of the linear motor 5 is fixedly connected to the upper end of the second lower oil well pump 19, and the second packer 18 is fixedly installed between the linear motor 5 and the second lower oil well pump 19. In the inner cavity of the casing pipe 2 , the lower end of the second lower oil...

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Abstract

A reciprocating electric submersible pump oil production system driven by a sand control linear motor relates to a submersible electric pump oil production system driven by a linear motor. For the reciprocating submersible electric pump oil production system driven by linear motors, since the linear motors used do not have sand control functions, the sand in the well fluid is easy to enter the gap between the mover and stator of the linear motors, affecting the reciprocating submersible electric pumps. Problems with the normal operation of the pump oil production system. The oil pipe is equipped with a drainer, the two ends of the reciprocating plunger pump are fixedly connected with the oil pipe and the linear motor respectively, and the two ends of the cable are respectively connected with the linear motor and the frequency conversion speed control device; the reciprocating plunger pump is a reciprocating split It is one of the plunger pump for stratified mining, reciprocating double pumping plunger pump for stratified mining or reciprocating double-acting plunger pump. The linear motor is a sand control linear motor. The oil production and sand prevention linear motor of the present invention drives the reciprocating electric submersible pump to work, thereby achieving the purpose of preventing the linear motor from jamming and ensuring the normal operation of the reciprocating electric submersible pump oil production system.

Description

technical field [0001] The invention relates to a submersible electric pump oil production system driven by a linear motor. Background technique [0002] The existing reciprocating electric submersible pump oil production system combines a linear motor and a plunger type oil well pump, and utilizes the linear motor to directly drive the plunger reciprocating movement of the plunger type oil well pump downhole to complete the suction. Since the linear motor used does not have the function of sand prevention, sand, oil, scale and other impurities in the well fluid can easily enter the gap between the mover and stator of the linear motor, causing the linear motor to be stuck and unable to work normally, and it will be damaged in the long run The linear motor reduces the service life of the linear motor, and also affects the normal operation of the reciprocating electric submersible pump oil recovery system. Contents of the invention [0003] The object of the present inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00F04B47/00
Inventor 王岩楼张传绪王林刘遵权柴立新卢东风付国太侯唯前苗晓明
Owner DAQING OILFIELD CO LTD
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