CN103527914A - Processing method for preventing connection thread gluing of titanium alloy oil well pipe - Google Patents
Processing method for preventing connection thread gluing of titanium alloy oil well pipe Download PDFInfo
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- CN103527914A CN103527914A CN201310404574.0A CN201310404574A CN103527914A CN 103527914 A CN103527914 A CN 103527914A CN 201310404574 A CN201310404574 A CN 201310404574A CN 103527914 A CN103527914 A CN 103527914A
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- titanium alloy
- well pipe
- thread
- alloy oil
- threaded surface
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Abstract
The invention relates to a processing method for preventing connection thread gluing of a titanium alloy oil well pipe. A shot blasting process is used for processing a connection external thread, and the hardness and the abrasive resistance of the surface of the connection external thread are improved. Meanwhile, a nickel/copper preplating process is used for a connection internal thread, a layer of copper film which is well combined with a titanium alloy matrix is electroplated on the surface of the connection internal thread, the hardness and the abrasive resistance of the surface of the connection internal thread are improved, and a friction condition is improved. Moreover, graphite is used for lubricating the internal thread and the external thread, and the friction coefficient between the surface of the internal thread and the surface of the external thread is effectively lowered. The method can effectively solve the problem of the connection thread gluing of the titanium alloy oil well pipe.
Description
Technical field
The present invention relates to a kind of processing method of titanium alloy oil-well pipe joint screw thread of petroleum gas production field use, to prevent that screw thread from thread gluing phenomenon in use occurring.This processing method is applicable to API screw thread and non-API screw thread.
Background technique
Titanium alloy is a kind of important structural metallic material rising the 1950's, compares with other structural metallic material, and titanium alloy has two significant advantages: high specific strength and excellent corrosion resistance.First, the density of titanium is 4.51g/cm
3, be only 57% of steel, but its yield strength surpasses many Alloy Constructional Steels.In addition, compare with other structural metallic materialss, titanium alloy has higher hot strength, and common structural titanium alloy still has enough intensity when 400 ℃ of following uses, and its hot strength is obviously better than stainless steel and refractory steel.Secondly, titanium alloy is much better than stainless steel at moist atmosphere and the corrosion resistance in Seawater; Strong especially to the resistivity of spot corrosion, stress corrosion; Alkali, chloride, nitric acid, sulfuric acid etc. are had to good anti-corrosion capacity.
Constantly surging along with to petroleum resources demand, has strengthened the Tarim Basin oil gas field of exploration and development dynamics ，Ru China of the extreme harsh oil gas fields such as super dark, high temperature, high pressure, high corrosive environment, Sichuan and Chongqing Oilfield etc.Therefore, production of hydrocarbons has had higher requirement, especially corrosion resistance to the performance of oil well pipe tubing.Oil pipe, sleeve pipe and drilling rod product through the titanium alloy manufacturing of optimal design have extremely excellent corrosion resistance, when ambient temperature is 330 ℃ below time, can effectively resist carbon dioxide, hydrogen sulfide, chloride ion corrosion, even the very high H of existence
2s partial pressure or simultaneously have two or more aggressive mediums.Research shows containing H
2in S gas hole condition, the corrosion resistance of titanium alloy surpasses high-end Ni-Cr-Mo alloy.Meanwhile, the density of titanium alloy is little, and specific strength is high, and under identical well depth condition, the deadweight of titanium alloy oil pipe and drilling rod will be far below steel oil well pipe or nickel-base alloy, and has higher corrosion fatigue drag, and this will reduce the cost of production of hydrocarbons greatly.And the low density of titanium alloy can make the cost of material of unit length titanium alloy oil pipe lower than nickel-base alloy, titanium alloy tube material processing technology has been obtained the progress of advancing by leaps and bounds in nearly 20 years simultaneously, in addition, titanium alloy just can reach 120ksi by rolling or its intensity of heat treatment, nickel-based alloy pipe needs just can reach the strength level of 120ksi through cold work hardening, the defect such as in cold deformation process, easily crack, will further reduce the yield rate of tubing.
But blemish in an otherwise perfect thing is that titanium alloy surface hardness is lower, wear resistance is poor, poor thermal conductivity, when titanium alloy and titanium alloy or other Metal Contact, be easy to occur adhesive wear, fretting wear, thereby make the titanium alloy pipe connecting threadably, in upper shackle process, easily there is interlock in its screw thread, thread gluing phenomenon, has destroyed structural integrity and the sealing integrity of tubing string.Titanium alloy oil well pipe thread thread gluing problem must be solved, and could realize titanium alloy oil well pipe product in the industrial applications in oil-gas mining field.
Summary of the invention
The processing method that the object of this invention is to provide the cheap anti-thread gluing of titanium alloy oil-well pipe joint screw thread of a kind of convenience, causes the inefficacy of tubing to prevent screw thread from upper/shackle process, thread gluing occurring.
Technical solution of the present invention is: the processing method of the anti-thread gluing of a kind of titanium alloy oil-well pipe joint screw thread, comprises the following steps:
(1) electrochemical deoiling of interior threaded surface:
Titanium alloy oil-well pipe joint internal thread is carried out to electrochemical deoiling, and used removes oil solution by the NaOH of 35-45g/L, 25-35g/L Na
2cO
3and 25-35g/L Na
3pO
4form, except oil temperature is 80-90 ℃, time 5-10min;
(2) interior threaded surface acid etching:
Subsequently, titanium alloy oil-well pipe joint interior threaded surface is carried out acid etching, and pickling solution is 65% nitric acid (HNO by volume concentration
3), volume concentration is 40% hydrofluoric acid (HF) and hydrogen peroxide (H
2o
2) in the HNO of following ratio: 80-100ml/L
3, the HF of 20-40ml/L, the H of 10-25ml/L
2o
2make, processing time 1-5min, after acid etching completes, the helical thread portion of workpiece cleans with distilled water;
(3) interior threaded surface activation processing
Afterwards, titanium alloy oil-well pipe joint internal thread carries out activation processing, and activation processing liquid is by density 1.19g/cm
3, the hydrochloric acid of 120-140ml/L, the black tropine of 40-50g/L forms, time 5-10min;
(4) interior threaded surface nickel preplating
Afterwards, titanium alloy oil-well pipe joint interior threaded surface is electroplated last layer nickel in advance: plating solution proportioning is as follows: the nickelous sulfate of 15-20g/L, the sodium hypophosphite of 15-20g/L, the sodium acetate of 10-15g/L, the propionic acid of 1-3ml/L, the pH value of plating solution maintains between 5.5-6.5, and current density is 300-340mA/dm
2, operating temperature is 85-95 ℃, time 10-15min;
(5) interior threaded surface copper facing
Finally, titanium alloy oil-well pipe joint interior threaded surface adopts electro-plating method to carry out copper plating treatment: electroplate liquid proportioning is as follows: the CuCN of 30-50g/L, the NaCN of 45-75g/L, the sodium potassium tartrate tetrahydrate of 25-40g/L, the NaOH of 10-20g/L, operating temperature 50-65 ℃, current density 300-400mA/dm
2, time 15-25min;
(6) male thread portion of titanium alloy oil well pipe is carried out to shot blast: adopt the cast steel ball that particle diameter is 0.2-0.4mm, its hardness is 45-55HRC, driving the air pressure of shot is 0.5-0.9MPa.
(7) the titanium alloy oil well pipe outside thread after shot blast when titanium alloy oil well pipe internal thread with copper layer is connected, is filled graphite therebetween and is helped lubricated.
The present invention has carried out respectively nickel preplating/copper plating treatment and shot blast to the internal thread of titanium alloy oil-well pipe joint and male thread portion, has improved screw thread contact surface hardness.On screw thread surface of contact, adopt the graphite that thermal conductivity is good to replace thread compound to reduce the friction factor between screw thread surface of contact as oiling agent, efficiently solve the problem of the easy thread gluing of titanium alloy oil-well pipe joint screw thread simultaneously.
Invention effect of the present invention is as follows:
(1) the present invention adopts respectively shot-peening and nickel preplating/copper-plating technique to process titanium alloy oil-well pipe joint outside thread and internal thread, improve thread surface hardness and wear resistance, reach the object that prevents thread gluing, solved the problem that thread gluing easily occurs titanium alloy oil-well pipe joint.Titanium alloy inipple after processing met ISO13679 standard about on oil well pipe screwed joints/technical requirements of shackle test.Adopt nickel preplating/copper-plating technique butt joint internal thread to process the hardness that has improved thread surface, improved friction condition.Adopt graphite to replace traditional thread compound to effectively reduce the friction factor between joint internal and external threads as oiling agent.
(2) the present invention adopts shot-peening to replace nickel preplating/copper-plating technique to process titanium alloy oil well pipe outside thread, has effectively saved processing cost, has reduced the pollution to environment.
(3) the present invention can be used for the processing of the titanium alloy oil-well pipe joint screw thread of at present conventional TA, TB, TC series, simultaneously all applicable to API and non-API screw thread.
Embodiment
Embodiment 1
The oil tube external thread of the Φ 73mm of TC4 alloy manufacture and coupling inner thread carry out respectively shot-peening and nickel preplating/copper plating treatment.
First, internal thread is at the NaOH containing 40g/L, 30g/L Na
2cO
3, 25g/L Na
3pO
4solution in carry out oil removing, solution temperature is about 80 ℃, time 8min.Carry out subsequently acid etching, the volume concentration 65%HNO that pickling solution proportioning is 100ml/L
3, the volume concentration 40%HF of 20ml/L, the H of 15ml/L
2o
2, processing time 3min.After acid etching completes, the helical thread portion of workpiece cleans with distilled water.Carry out afterwards activation processing, activating solution is by density 1.19g/cm
3, the hydrochloric acid of 130ml/L, the black tropine of 40g/L forms, time 10min.Nickel preplating afterwards, plating solution proportioning is as follows: the nickelous sulfate of 16g/L, the sodium hypophosphite of 15g/L, the sodium acetate of 10g/L, the propionic acid of 1ml/L.The pH value of plating solution maintains 5.5, and current density is 320mA/dm
2, operating temperature is about 90 ℃, time 10min.Finally carry out copper facing, electroplate liquid is by the CuCN of 31g/L, the NaCN of 45g/L, and the sodium potassium tartrate tetrahydrate of 25g/L, the NaOH of 12g/L forms.Operating temperature is about 60 ℃, current density 340mA/dm
2, time 25min.
It is 0.2mm that outside thread shot blast adopts particle diameter, and the cast steel ball that hardness is 50HRC carries out, and driving the air pressure of shot is 0.7MPa.
When the titanium alloy oil well pipe outside thread after shot blast is connected with the titanium alloy oil well pipe internal thread with copper layer, fills graphite therebetween and help lubricated.
TC4 titanium alloy oil connection after processing is done oiling agent with graphite, according on inipple in ISO13679 standard/shackle test requirements document tests, test result meets the requirement of ISO13679 standard.
Embodiment 2
The sleeve external thread of the Φ 139.7mm of TA18 alloy manufacture and coupling inner thread carry out respectively shot-peening and nickel preplating/copper plating treatment.
First, internal thread is at the NaOH containing 35g/L, 30g/L Na
2cO
3, 30g/L Na
3pO
4solution in carry out oil removing, solution temperature is about 90 ℃, time 6min.Carry out subsequently acid etching, the HNO that pickling solution is 65% by 100ml/L volume concentration
3, the HF that 20ml/L volume concentration is 40%, the H of 15ml/L
2o
2form processing time 3min.After acid etching completes, the helical thread portion of workpiece cleans with distilled water.Carry out afterwards activation processing, activating solution is by density 1.19g/cm
3, the hydrochloric acid of 120ml/L, the black tropine of 45g/L forms, time 6min.Carry out afterwards nickel preplating, plating solution proportioning is as follows: the nickelous sulfate of 20g/L, the sodium hypophosphite of 19g/L, the sodium acetate of 15g/L, the propionic acid of 3ml/L.The pH value of plating solution maintains between 6.4, and current density is 310mA/dm
2, operating temperature is about 90 ℃, time 12min.Finally carry out copper facing, electroplate liquid is by the CuCN of 49g/L, the NaCN of 75g/L, and the sodium potassium tartrate tetrahydrate of 40g/L, the NaOH of 20g/L forms.Operating temperature is about 60 ℃, current density 360mA/dm
2, time 20min.
It is 0.4mm that outside thread shot blast adopts particle diameter, and the cast steel ball that hardness is 55HRC carries out, and driving the air pressure of shot is 0.5MPa.
When the titanium alloy oil well pipe outside thread after shot blast is connected with the titanium alloy oil well pipe internal thread with copper layer, fills graphite therebetween and help lubricated.
TA18 titanium alloy oil connection after processing is done oiling agent with graphite, according on inipple in ISO13679 standard/shackle test requirements document tests, test result meets the requirement of ISO13679 standard.
Claims (1)
1. a processing method for the anti-thread gluing of titanium alloy oil-well pipe joint screw thread, is characterized in that: comprise the following steps:
(1) electrochemical deoiling of interior threaded surface:
Titanium alloy oil-well pipe joint internal thread is carried out to electrochemical deoiling, and used removes oil solution by the NaOH of 35-45g/L, 25-35g/L Na
2cO
3and 25-35g/L Na
3pO
4form, except oil temperature is 80-90 ℃, time 5-10min;
(2) interior threaded surface acid etching:
Subsequently, titanium alloy oil-well pipe joint interior threaded surface is carried out acid etching, and pickling solution is 65% nitric acid (HNO by volume concentration
3), volume concentration is 40% hydrofluoric acid (HF) and hydrogen peroxide (H
2o
2) in the HNO of following ratio: 80-100ml/L
3, the HF of 20-40ml/L, the H of 10-25ml/L
2o
2make, processing time 1-5min, after acid etching completes, the helical thread portion of workpiece cleans with distilled water;
(3) interior threaded surface activation processing
Afterwards, titanium alloy oil-well pipe joint internal thread carries out activation processing, and activation processing liquid is by density 1.19g/cm
3, the hydrochloric acid of 120-140ml/L, the black tropine of 40-50g/L forms, time 5-10min;
(4) interior threaded surface nickel preplating
Afterwards, titanium alloy oil-well pipe joint interior threaded surface is electroplated last layer nickel in advance: plating solution proportioning is as follows: the nickelous sulfate of 15-20g/L, the sodium hypophosphite of 15-20g/L, the sodium acetate of 10-15g/L, the propionic acid of 1-3ml/L, the pH value of plating solution maintains between 5.5-6.5, and current density is 300-340mA/dm
2, operating temperature is 85-95 ℃, time 10-15min;
(5) interior threaded surface copper facing
Finally, titanium alloy oil-well pipe joint interior threaded surface adopts electro-plating method to carry out copper plating treatment: electroplate liquid proportioning is as follows: the CuCN of 30-50g/L, the NaCN of 45-75g/L, the sodium potassium tartrate tetrahydrate of 25-40g/L, the NaOH of 10-20g/L, operating temperature 50-65 ℃, current density 300-400mA/dm
2, time 15-25min;
(6) male thread portion of titanium alloy oil well pipe is carried out to shot blast: adopt the cast steel ball that particle diameter is 0.2-0.4mm, its hardness is 45-55HRC, driving the air pressure of shot is 0.5-0.9MPa.
(7) the titanium alloy oil well pipe outside thread after shot blast when titanium alloy oil well pipe internal thread with copper layer is connected, is filled graphite therebetween and is helped lubricated.
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|---|---|---|---|
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106011807A (en) * | 2016-07-18 | 2016-10-12 | 宝鸡石油钢管有限责任公司 | Method of treating thread surface of titanium alloy oil pipe |
| CN113249730A (en) * | 2021-04-28 | 2021-08-13 | 南京航空航天大学 | Titanium alloy wire copper modification method and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476141A (en) * | 2008-12-26 | 2009-07-08 | 中国人民解放军第五七一九工厂 | Copper electroplating technological process for titanium alloy |
| CN101768747A (en) * | 2009-12-28 | 2010-07-07 | 无锡麟龙铝业有限公司 | Method for carrying out surface activating treatment on surface of titanium alloy |
| CN102286763A (en) * | 2011-08-25 | 2011-12-21 | 西北工业大学 | Process method for electroplating copper on TC4 titanium alloy surface |
| CN103276420A (en) * | 2013-05-06 | 2013-09-04 | 天津钢管集团股份有限公司 | Copper plating process method for hoop of titanium alloy oil well pipe |
-
2013
- 2013-09-06 CN CN201310404574.0A patent/CN103527914A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476141A (en) * | 2008-12-26 | 2009-07-08 | 中国人民解放军第五七一九工厂 | Copper electroplating technological process for titanium alloy |
| CN101768747A (en) * | 2009-12-28 | 2010-07-07 | 无锡麟龙铝业有限公司 | Method for carrying out surface activating treatment on surface of titanium alloy |
| CN102286763A (en) * | 2011-08-25 | 2011-12-21 | 西北工业大学 | Process method for electroplating copper on TC4 titanium alloy surface |
| CN103276420A (en) * | 2013-05-06 | 2013-09-04 | 天津钢管集团股份有限公司 | Copper plating process method for hoop of titanium alloy oil well pipe |
Non-Patent Citations (2)
| Title |
|---|
| 何文芳: "钛合金上电镀", 《ELECTROPLATING & POLLUTION CONTROL》, vol. 19, no. 110, 30 November 1999 (1999-11-30) * |
| 孙志华: "钛及钛合金的电镀工艺述评", 《腐蚀与防护》, vol. 26, no. 11, 30 November 2005 (2005-11-30), pages 493 - 496 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106011807A (en) * | 2016-07-18 | 2016-10-12 | 宝鸡石油钢管有限责任公司 | Method of treating thread surface of titanium alloy oil pipe |
| CN106011807B (en) * | 2016-07-18 | 2018-04-03 | 宝鸡石油钢管有限责任公司 | A kind of titanium alloy tubing round thread surface treatment method |
| CN113249730A (en) * | 2021-04-28 | 2021-08-13 | 南京航空航天大学 | Titanium alloy wire copper modification method and application |
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Application publication date: 20140122 |