CN106481284A - A kind of oil pipes box cupling - Google Patents
A kind of oil pipes box cupling Download PDFInfo
- Publication number
- CN106481284A CN106481284A CN201611072786.3A CN201611072786A CN106481284A CN 106481284 A CN106481284 A CN 106481284A CN 201611072786 A CN201611072786 A CN 201611072786A CN 106481284 A CN106481284 A CN 106481284A
- Authority
- CN
- China
- Prior art keywords
- box cupling
- oil pipes
- phosphating solution
- phosphating
- mentioned
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
Abstract
The invention discloses a kind of oil pipes box cupling, including box cupling body（1）It is characterised in that：In described box cupling body（1）Outer surface setting raised, box cupling body interior two ends arrange tapered female thread.This oil pipes box cupling, through alkali cleaning, is then used the rust cleaning activation of 3mol/L acetic acid, is subsequently placed in the Phosphating Solution possessing above-mentioned composition；Keep the pH value of Phosphating Solution to 2.0 2.5 simultaneously；Ozone is passed through in above-mentioned Phosphating Solution, keeps the ozone concentration in Phosphating Solution in the range of 3.0 3.5mg/L；And at a temperature of 20 25 DEG C phosphating reaction 35 minutes；After phosphatization, deionized water is cleaned and then is dried up, and the oil pipes box cupling Corrosion Protection using above-mentioned technique is greatly improved.
Description
Technical field
The present invention relates to oil pipe connection, specifically provide a kind of oil pipes box cupling.
Background technology
Oil pipes box cupling is important connection member, the thread gluing problem of oil well pipe thread and the folder of exploitation oil well casing
It is one of common failure mode of oil well pipe that tool slides, and bonderizing is applied to the surface treatment of oil pipes box cupling, mainly
Effect is antirust, reduces friction and anti-Thread-sticking.
Surface treatment to oil pipes box cupling at present, commonly used zinc-manganese Phosphating Solution is surface-treated, by this
The mode of kind can produce certain phosphating coat in metal surface after processing, but this Phosphating Solution treatment temperature is generally greater than 95 DEG C, processes
Time, sediment was many typically more than 25 minutes, and the effect that this phosphating coat is formed is bad, unstable properties, phosphatization working solution
After ageing, phosphating coat is difficult to be formed, and does not enable industrialized production it is impossible to reach anti-thread gluing, anti-wear and seizure resistance
Require.When being applied to more than N80 Hi-grade steel tubing and casing, go up shackle at maximum torque, usual 1st～2 time thread gluing occurs
Phenomenon.With the change of the market demand, user proposes higher and higher requirement, original zinc to the anti-galling performance of tubing and casing
Wear resistance technique has not adapted to its requirement.
Content of the invention
The purpose of the present invention is in order to easily produce thread gluing and fixture slides asks after solving oil pipes box cupling shackle
Topic, a kind of phosphating process of oil pipes box cupling of special offer, can directly pass through oil pipes box cupling impregnated phosphatization side
Formula is applied, and by the control to Phosphating Solution intermediate ion composition, forms a kind of densification black crystalline phosphating coat in metal surface, produces
Middle simplification operates, maintains easily, and can be efficiently applied to actual industrial metaplasia and produce.
For reaching this purpose, the present invention employs the following technical solutions：
Oil pipes box cupling includes box cupling body, box cupling body is arranged raised, and the setting of box cupling body interior two ends is tapered
Female thread.
Described technique is：Oil pipes box cupling alkali cleaning, then uses the rust cleaning activation of 3mol/L acetic acid, is subsequently placed on possessing
State in the Phosphating Solution of composition；Keep the pH value of Phosphating Solution to 2.0-2.5 simultaneously；Ozone is passed through in above-mentioned Phosphating Solution, keeps phosphorus
Ozone concentration in change liquid is in the range of 3.0-3.5mg/L；And at a temperature of 20-25 DEG C phosphating reaction 3-5 minute；Use after phosphatization
Deionized water cleans and then dries up.
Compared with the prior art, the invention has the advantages that：
Due to being processed using above-mentioned etching solution, oil pipes box cupling and oil pipes shackle number of times can reach 8-12
Secondary, postpone the service life of tubing coupling.
Brief description
Fig. 1 is the structural representation of the present invention.
1 box cupling body, 2 semicircle arcuations are raised, 3 taper female threads.
Specific embodiment
The oil pipes box cupling of the present invention, including box cupling body 1, box cupling body 1 outer surface is arranged to semicircle arcuation projection 2,
The internal two ends of box cupling body 1 arrange tapered female thread 3, oil pipes box cupling alkali cleaning, then use the rust cleaning of 3mol/L acetic acid to live
Change, be subsequently placed in the Phosphating Solution possessing above-mentioned composition；Keep the pH value of Phosphating Solution to 2.0-2.5 simultaneously；Ozone is passed through
State in Phosphating Solution, keep the ozone concentration in Phosphating Solution in the range of 3.0-3.5mg/L；And phosphatization is anti-at a temperature of 20-25 DEG C
Answer 3-5 minute；After phosphatization, deionized water is cleaned and then is dried up.
Finally it should be noted that:Above example is only not intended to limit in order to technical scheme to be described；To the greatest extent
Pipe has been described in detail to the present invention with reference to preferred embodiment, and those of ordinary skill in the art should be understood：Still
The specific embodiment of the present invention can be modified or equivalent is carried out to some technical characteristics；Without deviating from this
The spirit of bright technical scheme, it all should be covered in the middle of the technical scheme scope that the present invention is claimed.
Claims (1)
1. a kind of oil pipes box cupling it is characterised in that it is characterized in that：In described box cupling body（1）Outer surface setting
Raised（2）, box cupling body interior two ends arrange tapered female thread（3）；This oil pipes box cupling is through alkali cleaning, Ran Houyong
The rust cleaning activation of 3mol/L acetic acid, is subsequently placed in the Phosphating Solution possessing above-mentioned composition；Keep the pH value of Phosphating Solution to 2.0- simultaneously
2.5；Ozone is passed through in above-mentioned Phosphating Solution, keeps the ozone concentration in Phosphating Solution in the range of 3.0-3.5mg/L；And in 20-
Phosphating reaction 3-5 minute at a temperature of 25 DEG C；After phosphatization, deionized water is cleaned and then is dried up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611072786.3A CN106481284A (en) | 2016-11-29 | 2016-11-29 | A kind of oil pipes box cupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611072786.3A CN106481284A (en) | 2016-11-29 | 2016-11-29 | A kind of oil pipes box cupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106481284A true CN106481284A (en) | 2017-03-08 |
Family
ID=58275440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611072786.3A Pending CN106481284A (en) | 2016-11-29 | 2016-11-29 | A kind of oil pipes box cupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106481284A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250774A (en) * | 2013-06-26 | 2014-12-31 | 无锡洛社科技创业有限公司 | Phosphating process of petroleum pipe coupling |
| CN105543826A (en) * | 2015-12-29 | 2016-05-04 | 钢铁研究总院 | Normal-temperature phosphating solution forming phosphating film highly resistant to corrosion, preparing method and phosphating technology |
| CN205445496U (en) * | 2015-12-28 | 2016-08-10 | 康歌泽 | Novel tubing coupling |
| CN106089107A (en) * | 2016-08-12 | 2016-11-09 | 刘兴仁 | One is wear-resisting, liner is pressure, anticorrosion, nano heat-insulating composite oil pipe |
| CN205714010U (en) * | 2016-06-30 | 2016-11-23 | 浙江睿智钢业有限公司 | Outer flow passage box cupling |
-
2016
- 2016-11-29 CN CN201611072786.3A patent/CN106481284A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250774A (en) * | 2013-06-26 | 2014-12-31 | 无锡洛社科技创业有限公司 | Phosphating process of petroleum pipe coupling |
| CN205445496U (en) * | 2015-12-28 | 2016-08-10 | 康歌泽 | Novel tubing coupling |
| CN105543826A (en) * | 2015-12-29 | 2016-05-04 | 钢铁研究总院 | Normal-temperature phosphating solution forming phosphating film highly resistant to corrosion, preparing method and phosphating technology |
| CN205714010U (en) * | 2016-06-30 | 2016-11-23 | 浙江睿智钢业有限公司 | Outer flow passage box cupling |
| CN106089107A (en) * | 2016-08-12 | 2016-11-09 | 刘兴仁 | One is wear-resisting, liner is pressure, anticorrosion, nano heat-insulating composite oil pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170308 |