CN1212424C - Protective treatment method for oil sucking rod, oil pipe and sleeve used specially for oil field - Google Patents
Protective treatment method for oil sucking rod, oil pipe and sleeve used specially for oil field Download PDFInfo
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- CN1212424C CN1212424C CN 02121262 CN02121262A CN1212424C CN 1212424 C CN1212424 C CN 1212424C CN 02121262 CN02121262 CN 02121262 CN 02121262 A CN02121262 A CN 02121262A CN 1212424 C CN1212424 C CN 1212424C
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Abstract
The present invention relates to a protection method for an oil sucking rod, an oil pipe and a sleeve pipe which are specially used for an oil field. The present invention is characterized in that a rod and pipes are made into an oil sucking rod, an oil pipe and a sleeve pipe which are provided with a plurality of protection layers by the technical steps of oil removing, derusting, surface activation, positive electrode plating and multifunctional plating, or the technical steps of derusting, inner wall spray coating, outer wall spray drying, paint film solidification, etc. Because the rod and the pipes which are processed by the method of the present invention are provided with positive electrode plating layers, multifunctional plating layers or coating layers, the performance of corrosion prevention, scale prevention, wear resistant, etc. is increased, and moreover, the method of the present invention is also suitable for the repair of old rods and pipes for reuse under a well. In addition, the method of the present invention is very flexible, can plate inner layers and coat outer layers, or plate inner layers and outer layers and coat the inner layers and the outer layers, and can also process to form scale prevention layers, wax prevention layers, corrosion prevention layers or other functional layers according to the requirements of users.
Description
Technical field
The present invention relates to the protective treatment technology of metal tube bar, more particularly, is sucker rod, oil pipe, telescopic protection and the restorative procedure that oil production is used.
Background technology
At present, the sucker rod of petroleum industry, oil pipe protection have nickel plating and coating, repair to be car button, alignment etc.; method is simple; cure the symptoms, not the disease, and nickel plating price height, of poor quality; pin hole is arranged; go out rust staining, the life-span is short, coated pipe in oil well because the friction of motion of sucker rod; easily the decortication holddown blocks up the stratum after the decortication in well.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, propose the protection processing method of a kind of sucker rod, oil pipe and sleeve pipe (hereinafter to be referred as bar, pipe).
Main technical schemes of the present invention: at first protect body from protective mechanism, the method that adopts the spraying of duplex plating and/or inside and outside wall is to reach anticorrosion, antiscale, lubricious, attrition resistant purpose simultaneously.
The concrete treatment process of the present invention may further comprise the steps:
1. oil removing: pending rod tube is put into the degreasing tank with degreasing fluid,, heat dope or the sump oil promptly removed after 2 hours on pipe, the bar, the composition of described degreasing fluid and weight percentage with 60-90 ℃ of groove internal heating system heating:
Clear clear agent 30%, concentration is the sodium hydroxide 15% of 20-30%, all the other are tap water, the amount of degreasing fluid with expired bar, tube-surface exceeds;
2. rust cleaning: bar, pipe after step (1) oil removing are put into the rust cleaning groove that fills rust remover, soak grease, rust staining and the oxide film that to remove bar, tube-surface in 2-8 minute down at 10-35 ℃, the hydrochloric acid 50% of the composition of described rust remover and percentage composition: concentration 31-38%, inhibiter hexamethylenetetramine 3-5%, all the other are water, its add-on for expired bar, tube-surface exceeds;
3. surface active: step (2) rust cleaning back bar, pipe are put into the activated bath that fills activation solution, soak 40-60 second down at 5-30 ℃, the composition of described activation solution and weight percentage are: concentration is that the sulfuric acid 40% of 94-96% is blended into 60% clear water, its add-on with expired bar, tube-surface exceeds;
4. Ni-Zn-P is promptly plated in the anode plating: bar, pipe after step (3) is handled are put into the coating bath with chemical plating fluid, controlling pH value down at 98 ℃ is 8.8-9.2, handled the Ni-Zn-P coating of the Zn promptly obtain containing 12-15% through 4 hours, described Ni-Zn-P chemical liquids prescription is by g/L: NiSO
47H
2O27-35, NaH
2PO
2H
2O 10, Trisodium Citrate 85, NH
4Cl 50,25% NH
4OH 0-60, ZnSO
47H
2O 7.5-15, the add-on of chemical plating fluid expired bar, pipe 10cm;
5. Ni-P/PTFE (tetrafluoroethylene) is promptly plated in multi-functional plating, step (4) anode plating back sucker rod or oil pipe are placed the coating bath of the Ni-P/PTFE composite plating bath behind the mixing, the control pH value is 4.5-5.0, handles 4 hours down at 80-90 ℃, described Ni-P/PTFE composite plating bath prescription: NiSO
47H
2O29g/L, NaH
2PO
2H
2O 35g/L, propionic acid 2mg/L, thiocarbamide 1mg/L, PTFE dispersion liquid 36g/L, complex acid 24mg/L, the amount of described composite plating bath expired bar, pipe 10cm.
The present invention can also adopt inside and outside wall spraying, stoving process, detailed process in above-mentioned processing step (2) rust cleaning back:
1. inner-wall spraying: with the atomizing of spraying paint of interior varnish spray gun, the pressure that sprays paint is 4-6kg/cm
2, interior varnish spray gun is in the oil pipe endoporus, and the speed of travel is 20-30m/min, to-and-fro movement, with 500 commentaries on classics/min rotation, spray 2-3 each coat-thickness is the 15-20 micron to body in situ, every spray once all needs the baking and curing paint film;
2. outer wall spraying: with spray gun is 150g/min spray 2-3 time with the flow, and each thickness is the 20-25 micron, and every spray once all needs the baking and curing paint film;
3. baking and curing paint film: oil pipe and the every spray of sleeve pipe inside and outside wall are intact once promptly imports in the stoving oven continuously, 180-200 ℃ of oven dry, oil pipe is from advancing stove to the 60 minutes time of coming out of the stove, the paint film of each spraying back oven dry is brown, as bright as a sixpence, adopt the oil-pipe external wall spraying method for sucker rod, same each spraying back baking and curing paint film.
The present invention can also adopt wall anode plating, the multi-functional plating of inwall, outer wall spraying, baking and curing paint film technology for oil pipe or sleeve pipe behind surface active, obtain interior wall coating, outer wall is coated with structural sheet or the plating of inside and outside wall anode, inner-wall spraying, outer wall spraying, baking and curing paint film technology obtain mixolimnion again.
The present invention is when using old sucker rod, oil pipe or telescopic after for some time to repair, after its oil removing, rust cleaning, adopt method scale removal, alignment, reparation screw thread commonly used, finish thermal treatment on, the overclocking heat-treating machine middle and high, carry out coating and/or coating by above-mentioned technological process then at sucker rod, oil pipe and sleeve pipe that the anticorrosion new technology development in Beijing group produces.
The described clean-out system of step of the present invention (1) is that the trade mark that Harbin promotes the chemical plant to produce is the HB-9801 clean-out system;
The described PTFE dispersion liquid of step of the present invention (5) is to provide its technical indicator by the anticorrosion new technology development in Beijing group: PTFE solids content (heavy %): 60; Surfactant content (heavy %): 6 ± 1; PH value 9-10; Proportion (20 ℃) is 1.5-1.530.
The spraying paint of the present invention spraying comprises any in epoxy phenolics, petroleum resin, vibrin, powder coating, the bituminous composition, 30-40 second when the viscosity of lacquer is 25 °.
Described other industrial chemicals of the present invention is commercially available product.
The structure of degreasing tank, rust cleaning groove, activated bath, coating bath and heating system thereof that step of the present invention (1)-(5) are used all is identical.
Described trough is made of R a T mast-up, well heater control valve, groove internal heating comb (being well heater), trough is of a size of long 11 meters, the wide and high 0.8-1.4 of being rice, wall thickness with No. 20 steel plate welderings is 5-10mm, pending R a T can place in the groove, be provided with the well heater with heat-conducting oil heating in the groove, the liquid in the groove is by heater heats.
The heating system of described trough is by 0.3m
3Heat conducting oil boiler, oil return control valve, go out oil control valve, thermometer, oil-gas separator, expansion and add oil sump, transporting hot oil pump, delivery valve, fuel charging valve, heating calancria (well heater) and constitute, wherein said heating calancria is No. 20 steel pipes of Φ 76 * 3, spacing 100mm, long 10.5 meters, at the sidewall and the bottom uniform distribution of groove.
Described heat conducting oil boiler and thermal oil are produced by Heilongjiang Province's Anda City boiler factory.
Described valve, thermometer, Heat-transfer Oil Pump are produced by the water pump works, Changchun.
Described oil-gas separator, expansion add oil sump, well heater and groove and are produced by the anticorrosion new technology development in Beijing group.
The stoving oven that baking and curing paint film of the present invention is used is by upper furnace, upper furnace body heating calancria scatterer and thermal oil delivery valve thereof, upper furnace, upper furnace body well heater pylon, upper furnace body asbestos lagging material, enters upper furnace body heating tube scatterer thermal oil valve, the stokehold chain that transmits pipe to be dried, bar, lower hearth heating calancria scatterer, control lower hearth heating calancria scatterer turnover heat conduction fuel tap, speed reduction unit and driving chain thereof and driving chain wheel and forms.Described body of heater is long * and wide * high=6 * 12 * 2 meters, the burner hearth inside dimension is 11 * 6 * 0.6 meter, and Control for Kiln Temperature is by the control of heat transfer oil heater output temperature by-pass cock, and the stove internal heater is the calandria structure, and heating carrier is 320 ℃ of thermal oils, with 18m per hour
3Discharge capacity in well heater, flow, heating heat-conducting oil boiler export temperature is 290 ± 10 ℃, temperature is controlled at 190 ± 10 ℃ of 220 ± 10 ℃, oil pipe, sleeve pipe oven dry in the burner hearth, oil pipe, sleeve pipe are 5.8 meters two heat conduction supportings by spacing in stove, on guide rail, have 2 cun chains to creep with 6 meters speed per hour, guarantee oil pipe, sleeve pipe from advance stove to the used time of coming out of the stove be 60 minutes.
The present invention is that Beijing anticorrosion new technology development group produces repairing sucker rod, oil pipe and the effective heat-treating machine of cover, and the trade mark is the GR-1 type.
Advantage of the present invention and effect:
Method of the present invention realizes galvanic protection because bar, pipe are carried out anodic coating; Because bar, pipe are carried out multi-functional coating, particularly coating embeds tetrafluoroethylene, bar, anticorrosion, the antiscale of pipe, performance such as lubricated, wear-resisting are increased substantially, so after treatment bar, pipe are particularly suitable for rod-pumped well, polymer injection and carbonic acid gas well; Method of the present invention can also be that the endoporus anode plates multi-functional plating, outer wall spraying then, it can also be the internal and external anode plating, inside and outside wall spraying again obtains mixolimnion, can be according to customer requirements, select arbitrary processes to become antiscale layer, wax control layer, preservative coat or other multi-functional layer, with strong points like this, can reduce cost, and particularly suitable; Method of the present invention can be repaired used old bar, pipe equally; in reparation, add the surface heat treating processes; can recover the performance of old bar, pipe; and make old bar, pipe increase multiple means of defence and protective layer; make old bar, manage the use of going into the well again, can obtain considerable economic benefit.
Brief Description Of Drawings
Fig. 1 is the structural representation of groove.
Fig. 2 is Figure 1A-A sectional view.
Fig. 3 is the heating system synoptic diagram of groove.
Fig. 4 is the stoving oven structural representation.
Fig. 5 is the oil pipe synoptic diagram with coating structure.
Fig. 6 is the oil pipe synoptic diagram with coating structure.
Fig. 7 is coated with the oil pipe synoptic diagram of protective layer structure for inwall plating, outer wall.
By illustrated in figures 1 and 2, the both sides of groove 4 are provided with vertical loading board, tube support 1, and processed bar, pipe 3 place in the groove 4, and what be provided with heating carrier in the both sides of groove 4 and bottom is heating calancria well heater 6 with the thermal oil, and the both sides of groove 4 are well heater control valve 5.
By shown in Figure 3, the heating system of groove 4 has heat-conducting oil heating boiler 7, hot oil pump 10, be provided with oil return control valve 8 and oil return valve 11 with heat-conducting oil heating boiler 7 and the pipeline that the heating calancria well heater 6 that is arranged on groove 4 is communicated with, be connected with oil-gas separator 12 with pipeline with heat-conducting oil heating boiler 7 tops, on its pipeline, be provided with out oil control valve 9, the other end of oil-gas separator 12 links to each other with heating calancria 6 by pipeline, its pipeline is provided with fuel charging valve 5, the pipeline that oil return valve 11 is connected with transporting hot oil pump 10 is provided with that receivable expansion added oil sump 13 when thermal oil is overheated to be overflowed, and on the pipeline of oil-gas separator 12 and fuel charging valve 5 thermometer 14 is housed.
By shown in Figure 4, stoving oven has upper furnace 16, upper furnace body heating calancria (well heater) 17 and hang and hold frame 18, upper furnace body has asbestos thermal insulation layer 19, lower furnace body heating calancria 25, the oil pipe that transmission is to be dried, the chain 24 of sleeve pipe 21 (arrow is the chain gear direction), the travelling speed of control chain 24 and the speed reduction unit 29 that links to each other with motor 27 and the driving chain wheel 31 that is connected by driving chain 30 thereof, in addition, also have the upper furnace body heating calancria to advance thermal oil fuel charging valve 20, delivery valve 15, lower furnace body heating calancria fuel charging valve 26 (right side is a delivery valve), stokehold chain 22, the stokehold supporting leg 23 that plays fixed support is with fire door 32.
By shown in Figure 5, the oil pipe behind the coating is made of body 35, anodic coating 34 and multi-functional coating 33.
By shown in Figure 6, the oil pipe after the coating is made of body 35 and coating 36-1 and coating 36-2.
By shown in Figure 7, the oil pipe after inwall plating, outer wall are coated with is made of coating 36, body 35, anodic coating 34, multi-functional coating 33.
Embodiment
Example 1
This example adopts oil removing → rust cleaning → surface active → anode plating → multi-functional depositing process to oil pipe, obtain compound bed thickness as Fig. 5 coating structure and be 10 microns oil pipe, its performance coating is non-crystalline state, coefficient of friction 0.1-0.2, configuration of surface is shiny black look, transformation temperature is 342.4 ℃, unit elongation 3-6%, free of pinholes, acid-and base-resisting, salt soak, and other performance sees Table 1-table 4.
Example 2
This example adopts the spraying of oil removing → rust cleaning → inner-wall spraying → outer wall to oil pipe, and inside and outside wall all sprays 2 times, and every spray once all needs the baking and curing paint film, obtains the oil pipe with coating structure as shown in Figure 6, used spraying paint is petroleum resin.
The performance of oil pipe is: film thickness 65, hardness (HV) 300, flexible 1mm, shock-resistant 50kg/cm
3, acidproof: in concentration is to soak 100 hours no changes in 80% the sulfuric acid, alkaline-resisting: as to soak 106 hours no changes in the sodium hydroxide of concentration 10%, salt tolerant: in concentration is to soak 100 hours no changes in 30% salt solution.
Example 3
This example adopts the multi-functional plating of oil removing → rust cleaning → surface active → wall anode plating → inwall → outer wall spraying → baking and curing spraying coating process to oil pipe, obtains the interior wall coating as Fig. 7, the oil pipe of outer wall sprayed coating structure.Outer wall Ba is coated with 2 times, and used spraying paint is vibrin, its performance: the outer wall performance is example 2 performances, and inwall is example 1 performance.
The nickel content in table 1 anodic coating and the relation of hardness and steady potential
| Alloy composition | Hardness (kg/mm 2) | Steady potential (V SCE)/N |
| Zn | 60 | -1.01 |
| 15％Ni | 330 | -0.80 |
| 16％Ni | 370 | -0.78 |
| 20％Ni | 400 | -0.74 |
| 50％Ni | 550 | -0.71 |
| Carbon steel | 550 | -0.55 |
Table 2 hardness
| PTFE content (%) | 13.4 | 18.0 | 20.8 | 24.0 |
| Hardness (HV) | 380 | 300 | 250 | 230 |
Table 3 solidity to corrosion
*
| PTFE content (%) | 10.0 | 15.0 | 18.6 | 23.2 | 25.4 | 30.0 |
| Corrosion class | 7 | 6 | 6 | 5 | 5 | 5 |
*Solidity to corrosion ISO1462 standard detection
Table 4 thermal treatment is to the anti-corrosion influence of composite bed
*
| PTFE content (%) | 10.0 | 15.0 | 18.6 | 23.2 | 25.4 | 30.0 |
| | 6 | 5 | 5 | 4 | 4 | 3 |
*300 ℃ of thermal treatment temps, 1 hour, 10 microns of bed thickness.
Claims (5)
1. the special-purpose sucker rod in an oil field, oil pipe and casing pipe protection method is characterized in that may further comprise the steps:
(1). oil removing: pending bar, pipe are put into the degreasing tank with degreasing fluid,, heat dope or the sump oil promptly removed after 2 hours on pipe, the bar, the composition of described degreasing fluid and weight percentage with 60-90 ℃ of groove internal heating system heating:
Clear clear agent 30%, concentration is the sodium hydroxide 15% of 20-30%, all the other are tap water, the amount of degreasing fluid with expired bar, tube-surface exceeds;
(2). rust cleaning: bar, pipe after step (1) oil removing are put into the rust cleaning groove that fills rust remover, soak grease, rust staining and the oxide film that to remove bar, tube-surface in 2-8 minute down at 10-35 ℃, the composition of described rust remover and percentage composition: concentration is hydrochloric acid 50%, the inhibiter hexamethylenetetramine 3-5% of 31-38%, all the other are water, its add-on for expired bar, tube-surface exceeds;
(3). inner-wall spraying: with the atomizing of spraying paint of interior varnish spray gun, the pressure that sprays paint is 4-6kg/cm through the oil pipe of oil removing, rust cleaning and telescopic inwall
2, interior varnish spray gun is in the oil pipe endoporus, and the speed of travel is 20-30m/min, to-and-fro movement, with 500 commentaries on classics/min rotation, spray 2-3 each coat-thickness is the 15-20 micron to body in situ, every spray once all needs the baking and curing paint film;
(4). outer wall spraying: is 150g/min spray 2-3 time through the oil pipe of oil removing, rust cleaning and telescopic outer wall and sucker rod with the flow with spray gun, and thickness is the 20-25 micron at every turn, and every spray once all needs the baking and curing paint film:
(5). the baking and curing paint film: oil pipe and sleeve pipe inside and outside wall and the every spray of sucker rod are intact once promptly imports in the stoving oven continuously, and 180-200 ℃ of oven dry, from advancing stove to the 60 minutes time of coming out of the stove, the paint film of each spraying back oven dry is brown.
2. in accordance with the method for claim 1, it is characterized in that described spraying paint comprises in epoxy phenolics, petroleum resin, vibrin, powder coating, the bituminous composition any.
3. in accordance with the method for claim 1, it is characterized in that step (1) and the described degreasing tank of step (2) and rust cleaning groove structure are: the both sides of groove are provided with vertical loading board, tube support, to be provided with the thermal oil be the comb well heater of heating carrier both sides and bottom in groove, groove is of a size of long 11 meters, the wide and high 0.8-1.4 rice that is, the wall thickness of groove is 5-10mm.
4. in accordance with the method for claim 1, the degreasing tank that it is characterized in that step (1) and step (2), rust cleaning groove heating system comprises the heat-conducting oil heating boiler, the transporting hot oil pump is that well heater links to each other with the heat-conducting oil heating boiler with groove internal heating comb, heat-conducting oil heating boiler top is connected with oil-gas separator with pipeline, the oil-gas separator the other end links to each other with well heater by pipeline, the pipeline that the transporting hot oil pump links to each other with the comb well heater is provided with to expand and adds oil sump, on oil-gas separator and pipeline that the comb well heater links to each other, be provided with thermometer, in addition, on the pipeline that connects, also be provided with fuel charging valve, delivery valve, described heating calancria is No. 20 steel pipes of φ 76 * 3, spacing 100mm, long 10.5m, uniform in the sidewall and the bottom of groove.
5. in accordance with the method for claim 1, it is characterized in that the stoving oven that described baking and curing paint film is used has upper furnace, upper furnace body heating calancria and pylon thereof, upper furnace body has thermal insulation layer, the lower furnace body heating calancria, bar, pipe and the upper and lower body of heater heating calancria intermediary chain of process that transmission is to be dried by the fire, control chain travelling speed and the speed reduction unit that links to each other with motor, speed reduction unit is linked to each other with driving chain wheel by driving chain, also has the upper furnace body heating calancria to advance heat conduction fuel tap and delivery valve, lower furnace body heating calancria fuel charging valve and delivery valve in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02121262 CN1212424C (en) | 2002-06-12 | 2002-06-12 | Protective treatment method for oil sucking rod, oil pipe and sleeve used specially for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02121262 CN1212424C (en) | 2002-06-12 | 2002-06-12 | Protective treatment method for oil sucking rod, oil pipe and sleeve used specially for oil field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1465743A CN1465743A (en) | 2004-01-07 |
| CN1212424C true CN1212424C (en) | 2005-07-27 |
Family
ID=34142153
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02121262 Expired - Lifetime CN1212424C (en) | 2002-06-12 | 2002-06-12 | Protective treatment method for oil sucking rod, oil pipe and sleeve used specially for oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1212424C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786732A (en) * | 2010-03-22 | 2010-07-28 | 许昌东方化工有限公司 | Scale remover and preparation method thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220471B (en) * | 2007-12-18 | 2011-04-06 | 华南理工大学 | Chemical plating reinforcing method and apparatus for airborne tank internal surface protection |
| CN103305819B (en) * | 2012-03-16 | 2016-04-27 | 中国石油化工集团公司 | A kind of oil field tool chemical plating fluid and drilling tool corrosionproof protection method |
| CN103909054A (en) * | 2014-03-11 | 2014-07-09 | 盘锦中际特种管材制造有限公司 | Method for producing silicate composite tube |
| CN104259067B (en) * | 2014-08-26 | 2016-07-20 | 濮阳市顺康石油工程技术有限公司 | Technique it is coated with in the old oil pipe scale inhibition anticorrosion of sintering process |
| CN109572006A (en) * | 2016-07-13 | 2019-04-05 | 范秀红 | A kind of sucker rod renovation technique |
-
2002
- 2002-06-12 CN CN 02121262 patent/CN1212424C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786732A (en) * | 2010-03-22 | 2010-07-28 | 许昌东方化工有限公司 | Scale remover and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1465743A (en) | 2004-01-07 |
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Assignee: Harbin rising building materials Co., Ltd. Assignor: Fu Jianying|Ma Changhong Contract record no.: 2010230000049 Denomination of invention: Protective treatment method for oil sucking rod, oil pipe and sleeve used specially for oil field Granted publication date: 20050727 License type: Exclusive License Open date: 20040107 Record date: 20100728 |
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