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Steel solid sucker rod coated with stainless steel and preparation method thereof

A sucker rod, stainless steel technology, used in drill pipe, drilling equipment, earthwork drilling and other directions, can solve the problems of unusable operation elevators, no anti-corrosion, anti-eccentric wear, exposed rod body, etc., to achieve high hardness, Solve the deformation problem and make the effect with a simple method

Inactive Publication Date: 2020-12-18
东营市三和石油装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to solve the problems existing in the prior art that the modified nylon coating layer on the sucker rod head is likely to cause slight slippage and deformation under the condition of external force; The loose displacement of the layer may cause the operation elevator to be unusable. At the same time, due to the displacement, the rod body is exposed, and the exposed technical problem does not have the effect of anti-corrosion and anti-eccentric wear. Therefore, a solid steel sucker rod with outsourcing stainless steel is proposed. and its preparation method

Method used

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  • Steel solid sucker rod coated with stainless steel and preparation method thereof
  • Steel solid sucker rod coated with stainless steel and preparation method thereof
  • Steel solid sucker rod coated with stainless steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 As shown, a solid steel sucker rod covered with stainless steel includes a sucker rod body 1, the two ends of the sucker rod body 1 are respectively provided with a first joint 2 and a second joint 3, and the sucker rod The outside of the main body 1 is covered with two semicircular stainless steel sheets 4, and the unfolded shape of the two semicircular stainless steel sheets 4 is a rectangle, and the length of the two semicircular stainless steel sheets 4 is equal to the length of the sucker rod body 1 , the thickness of the two semicircular stainless steel sheets 4 is 0.5mm.

[0025] In this technical solution, by coating two semicircular stainless steel sheets 4 on the outside of the sucker rod body 1, it is beneficial to improve the corrosion resistance and wear resistance of the sucker rod body 1, and the stainless steel sheet 4 is used as the outer lining for anti-corrosion Compared with traditional half-coated plastic chemical treatment and ful...

Embodiment 2

[0033] A solid steel sucker rod covered with stainless steel, comprising a sucker rod body 1, the two ends of the sucker rod body 1 are respectively provided with a first joint 2 and a second joint 3, and the outer side of the sucker rod body 1 Covered with two semicircular stainless steel sheets 4, and the unfolded shape of the two semicircular stainless steel sheets 4 is rectangular, the length of the two semicircular stainless steel sheets 4 is equal to the length of the sucker rod body 1, and the The thickness of the two semicircular stainless steel sheets 4 is 1 mm.

[0034] The present invention also provides a method for preparing a steel solid sucker rod covered with stainless steel, comprising the following steps:

[0035] (a) Prefabricate two semicircular stainless steel sheets 4 with the same curvature as the outer wall of the sucker rod body 1;

[0036] (b) Fit two stainless steel sheets 4 to the sucker rod body 1;

[0037] (c) Attach two pieces of stainless stee...

Embodiment 3

[0041] A solid steel sucker rod covered with stainless steel, comprising a sucker rod body 1, the two ends of the sucker rod body 1 are respectively provided with a first joint 2 and a second joint 3, and the outer side of the sucker rod body 1 Covered with two semicircular stainless steel sheets 4, and the unfolded shape of the two semicircular stainless steel sheets 4 is rectangular, the length of the two semicircular stainless steel sheets 4 is equal to the length of the sucker rod body 1, and the The thickness of the two semicircular stainless steel sheets 4 is 1.5 mm.

[0042] The present invention also provides a method for preparing a steel solid sucker rod covered with stainless steel, comprising the following steps:

[0043] (a) Prefabricate two semicircular stainless steel sheets 4 with the same curvature as the outer wall of the sucker rod body 1;

[0044] (b) Fit two stainless steel sheets 4 to the sucker rod body 1;

[0045] (c) Attach two pieces of stainless st...

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Abstract

The invention discloses a steel solid sucker rod coated with stainless steel and a preparation method thereof, and relate to the technical field of petroleum operation machinery. The steel solid sucker rod comprise a sucker rod body, wherein a first joint and a second joint are arranged at two ends of the sucker rod body correspondingly; and the outer side of the sucker rod body are coated with two semicircular stainless steel sheets, the two semicircular stainless steel sheets are unfolded to be in rectangular shapes, and the length of the two semicircular stainless steel sheets is equal to the length of the sucker rod body. According to the technical scheme, the outer side of the sucker rod body is coated with the stainless steel sheets, so that the corrosion resistance and the abrasionresistance of the sucker rod body is favorably improved; and the stainless steel sheets are used as outer linings for antiseptic treatment, so that compared with traditional semi-coating plastic chemical treatment and full spray welding chemical treatment, the steel solid sucker rod has the advantage of reducing environmental pollution.

Description

technical field [0001] The invention relates to the technical field of petroleum operation machinery, in particular to a solid steel sucker rod covered with stainless steel and a preparation method thereof. Background technique [0002] In the process of oil extraction, the sucker rod is the main pipe and rod equipment for the oil well pumping unit. The sucker rod is always under the action of hydrogen sulfide, carbon dioxide, dissolved oxygen and conductive groundwater, and some are still under steam heating. In high-temperature inclined wells, the corrosion resistance and wear resistance of the sucker rod will be greatly reduced under high temperature conditions (200-300°C); moreover, the sucker rod is always in dynamic tension, compression, bending and twisting during the production process. Under the influence of fluid flow and abrasive wear, the corrosion of the sucker rod is aggravated and corrosion fatigue, erosion corrosion, etc. are easily generated. At present, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/00E21B17/10B23P15/00
CPCB23P15/00E21B17/00E21B17/1085
Inventor 范玉斌王伦启周宏斌周磊褚彬彬曾宪为田赓季新春
Owner 东营市三和石油装备有限公司