High-temperature-resistant coated sucker rod

A sucker rod, high temperature resistance technology, applied in drill pipe, inorganic chemistry, molybdenum compound and other directions, can solve the problems of poor sucker rod resistance to high temperature, not meeting the needs of oil production, etc., to improve adhesion performance, convenient Takeover and disassembly, good insulation effect

Active Publication Date: 2021-01-15
DONGYING JINYILAI PETROLEUM MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of oil pumping, as the oil field is developed deeper and deeper, the temperature of the internal oil is also getting higher and higher. However, the current high temperature resistance of the sucker rod is relatively poor, which does not meet the needs of oil production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A high temperature resistant coated sucker rod, the sucker rod is composed of at least one sucker rod unit section 1; the sucker rod unit section 1 includes a raised port 2, a concave port 3 and a cylindrical rod 4, the The protruding port 2 and the concave port 3 are respectively fixedly arranged at both ends of the cylindrical rod 4; the protruding port 2 and the concave port 3 can be fitted with each other; a plurality of the sucker rod unit sections 1 can respectively pass through The protruding port 2 and the concave port 3 are connected end to end.

[0042] The protruding port 2 and the concave port 3 are connected by thread or buckle.

[0043] The sucker rod unit section 1 is made of anti-corrosion metal material.

[0044] The outer surface of the sucker rod unit section 1 is provided with a high temperature resistant layer.

[0045] The high temperature resistant layer is prepared from modified polyimide.

[0046] The modified polyimide is prepared by modifyi...

Embodiment 2

[0069] A high temperature resistant coated sucker rod, the sucker rod is composed of at least one sucker rod unit section 1; the sucker rod unit section 1 includes a raised port 2, a concave port 3 and a cylindrical rod 4, the The protruding port 2 and the concave port 3 are respectively fixedly arranged at both ends of the cylindrical rod 4; the protruding port 2 and the concave port 3 can be fitted with each other; a plurality of the sucker rod unit sections 1 can respectively pass through The protruding port 2 and the concave port 3 are connected end to end.

[0070] The protruding port 2 and the concave port 3 are connected by threads.

[0071] The sucker rod unit section 1 is made of anti-corrosion metal material.

[0072] The outer surface of the sucker rod unit section 1 is provided with a high temperature resistant layer.

[0073] The high temperature resistant layer is prepared from modified polyimide.

[0074] The modified polyimide is prepared by modifying polyim...

Embodiment 3

[0097] A high temperature resistant coated sucker rod, the sucker rod is composed of at least one sucker rod unit section 1; the sucker rod unit section 1 includes a raised port 2, a concave port 3 and a cylindrical rod 4, the The protruding port 2 and the concave port 3 are respectively fixedly arranged at both ends of the cylindrical rod 4; the protruding port 2 and the concave port 3 can be fitted with each other; a plurality of the sucker rod unit sections 1 can respectively pass through The protruding port 2 and the concave port 3 are connected end to end.

[0098] The protruding port 2 and the concave port 3 are connected by thread or buckle.

[0099] The sucker rod unit section 1 is made of anti-corrosion metal material.

[0100] The outer surface of the sucker rod unit section 1 is provided with a high temperature resistant layer.

[0101] The high temperature resistant layer is prepared from modified polyimide.

[0102] The modified polyimide is prepared by modifyi...

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Abstract

The invention relates to the field of sucker rods, in particular to a high-temperature-resistant coated sucker rod. The sucker rod is composed of at least one sucker rod unit section. Each sucker rodunit section comprises a convex port, a concave port and a cylindrical rod, wherein the convex port and the concave port are fixedly arranged at the two ends of the cylindrical rod correspondingly. Ahigh-temperature-resistant layer is arranged on the outer surface of each sucker rod unit section. The high-temperature-resistant layers are prepared from modified polyimide. The problem that the surface of the sucker rod is hot in long-time work is solved. The high-temperature-resistant coated sucker rod has the following advantages that (1) the sucker rod is composed of the at least one sucker rod unit section, and pipe connecting and dismounting are convenient; and (2) the high-temperature-resistant layers are arranged, high temperature can be isolated outside the sucker rod, and the situation that the sucker rod deforms or influences the oil pumping quality due to accumulation of a large amount of heat during use is avoided.

Description

technical field [0001] The invention relates to the field of sucker rods, in particular to a high-temperature-resistant coated sucker rod. Background technique [0002] At present, in the field of oil production in oil fields, the pumping unit is the most important component in the mechanical recovery, and the sucker rod is an important part of the oil recovery of the pumping unit, which mainly extracts oil quickly. In the process of oil pumping, as the oil field is developed deeper and deeper, the temperature of the internal oil is also getting higher and higher. However, the high temperature resistance of the current sucker rod is relatively poor, which does not meet the needs of oil recovery. Contents of the invention [0003] In view of the above problems, the present invention provides a high temperature resistant coated sucker rod, the sucker rod is composed of at least one sucker rod unit section; the sucker rod unit section includes a convex port, a concave port an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/00E21B17/046C01G39/00
CPCC01G39/00E21B17/00E21B17/046
Inventor 刘奕良孙佳星崔东华刘奕辰刘奕何于法珍刘国光
Owner DONGYING JINYILAI PETROLEUM MACHINERY
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