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A kind of oil field pipe material and its electroplating method and electroplating material

A technology for pipes and oilfields, which is applied in the fields of oilfield pipes and their electroplating methods and electroplating materials. It can solve the problems of failure of the protective effect of the electroplating layer, easy peeling of the nickel electroplating layer, corrosion of oilfield pipes, etc., and achieve the effect of not easy to fall off and anti-corrosion Good, improve the effect of leveling

Active Publication Date: 2018-09-25
SHENGLI OILFIELD SHENGXIN ANTISEPSIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem of internal stress will become more serious as the thickness of the coating increases, and the nickel coating with these defects is prone to peeling, cracking or chipping, causing partial or even complete protection of the coating to fail, especially when the nickel layer is electroplated as another metal When the base coating is used, the failure is more obvious, and both layers of electroplating will be damaged
[0008] (3) There are leaks (pinholes) or cracks in the single-layer nickel, and the anti-corrosion effect is poor
[0009] As the drilling environment becomes more and more harsh and the drilling footage becomes deeper and deeper, the corrosion of oilfield pipes becomes more and more serious. The nickel-tungsten electroplating layer of the existing oilfield pipes cannot meet the needs of on-site use. A new type of oilfield Pipe surface treatment technology is becoming more and more urgent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Internal and external surface treatment of raw material pipes, material J55N model φ73.02×5.51.

[0038] Pretreatment of the inner and outer surfaces of the pipe: degreasing at a high temperature of 350°C for 3 hours, and then using quartz sand to derust the inner and outer walls of the oil pipe.

[0039] (2) Preparation of bottom plating solution and plating method

[0040]Dissolve nickel sulfate, phosphorous acid, boric acid in water, then add 4-hydroxybenzenesulfonamide, sodium benzoate, o-methyl salicylaldehyde and sodium lauryl sulfate, in which water, nickel sulfate, phosphorous acid, boric acid, 4- The weight ratio of hydroxybenzenesulfonamide, sodium benzoate, o-methyl salicylaldehyde and sodium lauryl sulfate is 1000:300:65:40:0.4:0.5:5:2.

[0041] Bottom plating solution treatment conditions: temperature 65°C, pH 4.7, current 4.5 A / dm 2 , the electroplating time is 25min, and the plating solution is continuously filtered.

[0042] After the electroplati...

Embodiment 2

[0053] (1) Internal and external surface treatment of raw material pipes, material J55N model φ73.02×5.51.

[0054] Pretreatment of the inner and outer surfaces of the pipe: degreasing at a high temperature of 350°C for 3 hours, and then using quartz sand to derust the inner and outer walls of the oil pipe.

[0055] (2) Preparation of bottom plating solution and plating method

[0056] Dissolve nickel sulfate, phosphorous acid, boric acid in water, then add sulfanilamide, sodium benzoate, o-methyl salicylaldehyde and sodium lauryl sulfate, in which water, nickel sulfate, phosphorous acid, boric acid, 4-hydroxy The weight ratio of benzenesulfonamide, sodium benzoate, o-methyl salicylaldehyde and sodium lauryl sulfate is 1000:330:70:45:0.4:0.5:5:2.

[0057] Bottom plating solution treatment conditions: temperature 65°C, pH 4.7, current 4.5 A / dm 2 , the plating time is 25min, and the plating solution is continuously filtered.

[0058] After the electroplating was completed, th...

Embodiment 3

[0069] (1) Internal and external surface treatment of raw material pipes, material J55N model φ73.02×5.51.

[0070] Pretreatment of the inner and outer surfaces of the pipe: degreasing at a high temperature of 350°C for 3 hours, and then using quartz sand to derust the inner and outer walls of the oil pipe.

[0071] (2) Preparation of bottom plating solution and plating method

[0072] Dissolve nickel sulfate, phosphorous acid, boric acid in water, then add, m-aminobenzenesulfonamide, sodium benzoate, o-methyl salicylaldehyde and sodium lauryl sulfate, in which water, nickel sulfate, phosphorous acid, boric acid, 4- The weight ratio of hydroxybenzenesulfonamide, sodium benzoate, o-methyl salicylaldehyde and sodium lauryl sulfate is 1000:280:60:35:0.4:0.5:5:2.

[0073] Bottom plating solution treatment conditions: temperature 65°C, pH 4.7, current 4.5A / dm 2 , the treatment time is 25min, and the plating solution is continuously filtered.

[0074] After the electroplating was...

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Abstract

The invention discloses an oil field tubular product and an electroplating method and material of the oil field tubular product. The electroplating material comprises bottom layer electroplating liquid, middle layer electroplating liquid and surface layer electroplating liquid; the bottom layer electroplating liquid contains an additive which is amines containing hydroxyl and / or amino; and the middle layer electroplating liquid contains a first preparing agent, a filling and leveling agent and a brightener, wherein the first preparing agent is polydisulfamate sodium sulfonate and / or phenyl polydisulfamide sodium sulfonate, the filling and leveling agent is N-diethylenediamine acid ethyl ester-omega-sulfato de sodio and / or morpholinyl aminodithioformic acid ethyl ester-omega-sulfato de sodio, and the brightener is thiazoline dithiopropane sulfonate sodium and / or 2-sulfydryl benzimidazole. The bottom layer electroplating liquid, the middle layer electroplating liquid and the surface layer electroplating liquid of the electroplating material adopt unique recipe, stress generated by nickel on the bottom layer and nickel on the surface layer can be reduced, the bonding performance of the middling layer, the bottom layer and the surface layer can be strengthened, phenomena of peeling, falling and the like are prevented, and leakage points are completely eliminated.

Description

technical field [0001] The invention relates to an oilfield pipe, its electroplating method and electroplating materials, in particular to an oilfield pipe with high temperature resistance, corrosion resistance and wear resistance, its electroplating method and electroplating materials. Background technique [0002] With the continuous development of oil and gas fields, the depth of oil wells continues to deepen, and the working environment of metal pipes used in oil fields is becoming more and more complex, with higher temperatures and higher pressures. Changes in the corrosive environment increase the corrosion rate of the pipe and shorten the service life of the pipe, especially in the saturated brine in an alkaline environment, the corrosion rate of the metal pipe is greatly increased, resulting in a fast failure time of the pipe, a short operating cycle, and frequent The repetitive operation not only affects the workload of the oil field, but also wastes a lot of manpow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/14C25D3/18C25D3/38C25D7/04
CPCC25D3/18C25D3/38C25D5/14C25D7/04
Inventor 常平蒲宝林任伟贾永利王建春周泉苏建勇王磊康寿惠
Owner SHENGLI OILFIELD SHENGXIN ANTISEPSIS
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