CN101215716A - Stainless steel anti-corrosion pipe used for oil gas field and manufacturing method thereof - Google Patents
Stainless steel anti-corrosion pipe used for oil gas field and manufacturing method thereof Download PDFInfo
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Abstract
The invention relates to a stainless steel anti-corrosion pipe which is used in oil-gas field and a manufacturing method. The manufacturing technology of the stainless steel anti-corrosion pipe comprises the following steps: first, carrying out impact cleaning on an oil pipe or a sleeve pipe, then immersing in NaOH liquid for 3-5 seconds to remove oily soil on the surface of the oil pipe or the sleeve pipe, washing away residual oily soil by water, then washing in hydrochloric acid 15% for 5-7 seconds to remove oil on the pipe, washing away residual acid by water, assistant plating in plating auxiliary for 2 seconds, drying in a groove type drying pool for 2 seconds under the temperature of 120 DEG C, immersing the pipe in aluminum multicomponent alloy liquid, smelting the pipe for 3-5 seconds under the temperature of 700-750 DEG C, leading the surface of the pipe body into stainless steel, then air cooling and water cooling, and obtaining stainless steel anti-corrosion oil pipe and sleeve pipe through electric arc hot spraying on a screw thread. An oil pipe or a sleeve pipe which is prepared by the method has the advantages of good corrosion resistance, large binding force, good mechanical property, ageing resistance and strong antiscaling paraffin-controlling property.
Description
Technical field:
The present invention relates to the used a kind of oil pipe in oil recovery field, oil field or sleeve pipe and preparation method thereof, belong to a kind of stainless steel anti-corrosion tubing and casing that is used for oil-gas field and preparation method thereof.
Background technology:
Adopt oil pipe or sleeve pipe to come liquid is transported during oil recovery, oil pipe burn into perforation phenomenon can occur in the medium-term and long-term use of edatope, causes oil pipe or sleeve pipe not to reach and promptly can not re-use working life.And on-the-spot present applied tubing and casing anti-corrosion method is surperficial sealing coat method, can only play the effect of temporary transient isolation environment corrosive medium, prolongation along with duration of service, preservative coat then begins to occur the gas-bearing formation obscission, cause the aggravation of oil pipe or casing corrosion, surperficial sealing coat is mainly the Resins, epoxy type coating simultaneously, there is the water-intake rate height in these Resins, epoxy type coatings, anti-mechanical shock, anti-machinery scratches the problem of poor performance, preservative coat can damage when construction and carrying, have a strong impact on preservative effect, reduced the work-ing life of oil pipe, and the wax control of these sealing coats, anti-scaling property is poor, causes the tubing and casing wax deposition, scale formation is serious, shorten the maintenance interval of tubing and casing, cause financial loss.
Summary of the invention:
In order to overcome short deficiency of existing oil pipe or casing tube anti-corrosive, wax control, antiscaling effect difference and work-ing life, the invention provides a kind of stainless steel anti-corrosion tubing and casing and preparation method thereof, the anti-corrosion pipe that is made by this making method not only has excellent corrosion resisting performance, big, the good mechanical property, anti-aging of bonding force, but also has the advantage of strong wax-proof anti-scaling.
The technical solution used in the present invention is: the manufacturing process steps of stainless steel anti-corrosion pipe that is used for oil-gas field is as follows: at first oil pipe or sleeve pipe are carried out ball blast, in NaOH solution, soak afterwards and removed surface and oil contaminant in 3～5 minutes, water is washed the oil residues dirt off, again effective 15% hydrochloric acid is cleaned and carried out oil removal treatment in 5～7 minutes, wash residual acid off with clear water, in quickening liquid, help plating 2 minutes, oven dry is 2 minutes in 120 ℃ of slot type drying pools, pipe is immersed in the aluminium multicomponent alloy liquid, smelting is 3～5 minutes under 700～750 ℃ of conditions, make body surface stainless steel, air cooling afterwards, water-cooled, and carry out screw thread place electric-arc thermal spray coating, its spraying material aluminum-alloy wire and zinc silk, the two melts under arcing, is sprayed on thread surface by high pressure gas, makes stainless steel anti-corrosion oil pipe or sleeve pipe.
Zinc content 28～30% in the above-mentioned aluminium multicomponent alloy liquid, chromium content 10～13%, nickel content 7～10%, silicone content 4～5%, content of rare earth 0.01～0.05%, surplus is an aluminium liquid; Rare earth is formulated by quality 1: 1 by lanthanum and cerium; Quickening liquid is by K
2ZrF
6100g/L, KCl100g/L, NaF1g/L and excess water are formed; The mass ratio of aluminum-alloy wire and zinc silk 2: 1.
The stainless steel anti-corrosion pipe that above-mentioned method makes.
The invention has the beneficial effects as follows: oil pipe obtained by this method or sleeve pipe top layer have the stainless steel characteristic, form the metallurgical chemistry combination between coating, strong adhesion, and have the sacrificial protection effect, have higher physical strength and solidity to corrosion; This tube surfaces light, smooth, free of pinholes, non-scaling, not sticking oil; But dielectric corrosions such as acid-and base-resisting, salt, tensio-active agent, sewage, Sweet natural gas, microorganism; Have anticorrosion, antiscale, wax control and anti-delamination four anti-characteristics.In addition, the screw thread place of pipe carries out electric-arc thermal spray coating, has solved the anticorrosion difficult problem of tubing thread.
Description of drawings:
Accompanying drawing 1 is the structure sectional view of invention.
The 1-tube body, 2-iron aluminium multicomponent alloy layer, the pure alloy layer of 3-.
Embodiment:
The invention will be further described below in conjunction with embodiment: as shown in Figure 1: be made up of iron aluminium multicomponent alloy layer (2), the pure alloy layer (3) of oil pipe, sleeve body (1), oil pipe, the plating of sleeve body (1) inside and outside wall stainless steel anti-corrosion oil pipe or sleeve pipe that the present invention makes.
Stainless steel anti-corrosion oil pipe or sleeve pipe with making are processed into the 30cm pipe nipple, carry out Mechanics Performance Testing on testing machine for mechanical properties, comprising tensile strength, yield strength and unit elongation.And carry according to the GB/T14976-1994 fluid and to be analyzed with the stainless-steel seamless pipe standard.Experimental technique and experiment condition are according to the GB/T14976-1994 standard.
Experiment records stainless steel anti-corrosion pipe mechanical property table 1
| Sequence number | Stainless steel technology | Mechanical property | |||
| Processing condition | Cross liquid (%) | ∑b/MP a | σ0.2/ Mpa | δ5( ％) | |
| 1 | 700 ℃/3 ' 16 "/air cooling water-cooled after 3 minutes | Zinc 30 chromium 10 nickel 8 silicon 5 rare earths 0.03 surplus aluminium | 679 | 251 | 36 |
| 2 | 720 ℃/5 ' 18 "/air cooling water-cooled after 3 minutes | Zinc 30 chromium 11 nickel 9 silicon 5 rare earths 0.04 surplus aluminium | 684 | 217 | 26 |
| 3 | 750 ℃/3 ' 07 "/air cooling water-cooled after 3 minutes | Zinc 28 chromium 13 nickel 7 silicon 4 rare earths 0.02 surplus aluminium | 659 | 264 | 34 |
| 4 | 710 ℃/5 '/ |
Zinc 29 chromium 11 nickel 10 silicon 4 rare earths 0.01 surplus aluminium | 667 | 228 | 25 |
| 5 | 750 ℃/5 '/ |
Zinc 30 chromium 12 nickel 8 silicon 5 rare earths 0.05 surplus aluminium | 625 | 240 | 28 |
| 6 | 730 ℃/3 ' 08 "/air cooling water-cooled after 3 minutes | Zinc 28 chromium 10 nickel 8 silicon 5 rare earths 0.03 surplus aluminium | 704 | 248 | 32 |
| 7 | 720 ℃/5 ' 23 "/air cooling water-cooled after 3 minutes | Zinc 29 chromium 12 nickel 10 silicon 5 rare earths 0.05 surplus aluminium | 685 | 241 | 36 |
| 8 | 710 ℃/3 ' 19 "/air cooling water-cooled after 3 minutes | Zinc 30 chromium 10 nickel 8 silicon 5 rare earths 0.03 surplus aluminium | 682 | 259 | 38 |
| 9 | 740 ℃/3 ' 21 "/air coolings 3 ' 45 " back water-cooled | Zinc 29 chromium 10 nickel 8 silicon 5 rare earths 0.03 surplus aluminium | 670 | 248 | 39 |
| 10 | 740 ℃/5 ' 16 "/air coolings 3 ' 45 " back water-cooled | Zinc 30 chromium 10 nickel 8 silicon 5 rare earths 0.03 surplus aluminium | 660 | 245 | 35 |
| On average | 671.5 | 244.1 | 32.9 | ||
The GB/T14976-1994 fluid is carried the mechanical property table 2 with stainless-steel seamless pipe
| Types of organization | Sequence number | The trade mark | Recommend heat treating regime | Mechanical property | Density/(g/cm3) | ||
| ∑b/MP a | σ0.2/M Pa | δ5(％ ) | |||||
| ≥ | |||||||
| Austenitic | 1 | 0Cr18Ni9 | 1010 ~ 1150 ℃, chilling | 520 | 205 | 35 | 7.93 |
| 2 | 00Cr19Ni10 | 1010 ~ 1150 ℃, chilling | 480 | 175 | 35 | 7.93 | |
| 3 | 0Cr23Ni13 | 1030 ~ 1150 ℃, chilling | 520 | 205 | 35 | 7.98 | |
| 4 | 0Cr25Ni20 | 1030 ~ 1150 ℃, chilling | 520 | 205 | 35 | 7.98 | |
| 5 | 0Cr18Ni10Ti | 920 ~ 1150 ℃, chilling | 520 | 205 | 35 | 7.95 | |
| 6 | 0Cr18Ni11Nb | 980 ~ 1150 ℃, chilling | 520 | 205 | 35 | 7.98 | |
| 7 | 0Cr17Ni12Mo2 | 1010 ~ 1150 ℃, chilling | 520 | 205 | 35 | 7.98 | |
| 8 | 00Cr17Ni14Mo2 | 1010 ~ 1150 ℃, chilling | 480 | 175 | 35 | 7.98 | |
| 9 | 0Cr19Ni13Mo3 | 1010 ~ 1150 ℃, chilling | 520 | 205 | 35 | 7.98 | |
| 10 | 00Cr19Ni13Mo3 | 1010 ~ 1150 ℃, chilling | 480 | 175 | 35 | 7.98 | |
| 11 | 0Cr18Ni12Mo2Ti | 1000 ~ 1100 ℃, chilling | 530 | 205 | 35 | 8.00 | |
| 12 | 1Cr18Ni12Mo2Ti | 1000 ~ 1100 ℃, chilling | 530 | 205 | 35 | 8.00 | |
| 13 | 0Cr18Ni12Mo3Ti | 1000 ~ 1100 ℃, chilling | 530 | 205 | 35 | 8.10 | |
| 14 | 1Cr18Ni12Mo3Ti | 1000 ~ 1100 ℃, chilling | 530 | 205 | 35 | 8.10 | |
| 15 | 0Cr18Ni12Mo2Cu2 | 1010 ~ 1150 ℃, chilling | 520 | 205 | 35 | 7.98 | |
| 16 | 00Cr18Ni14Mo2Cu 2 | 1010 ~ 1150 ℃, chilling | 480 | 180 | 35 | 7.98 | |
| 17 | 1Cr18Ni9Ti | 1000 ~ 1100 ℃, chilling | 520 | 205 | 35 | 7.90 | |
| Ferrite type | 18 | 0Cr13 | 780 ~ 830 ℃, air cooling or slow cooling | 370 | 180 | 22 | 7.70 |
| Austenite-ferrite type | 19 | 0Cr26Ni5Mo2 | 〉=950 ℃, chilling | 590 | 390 | 18 | 7.80 |
| On average | 505 | 197.22 | 34.28 | 7.97 | |||
Annotate: 1. the tensile strength of hot extrude pressure pipe allows to reduce 20MPa, and unit elongation allows to fluctuate in 3% scope.
From above-mentioned experimental result as can be seen, tensile strength is than the high 166.5MPa of standard behind the stainless steel, yield strength exceeds 46.88MPa, unit elongation reduces by 1.38%, intensity, the hardness of anti-corrosion pipe increase to some extent behind these data declaration stainless steels, and plasticity slightly reduces, and conforms with the GB/T14976-1994 standard-required.
By this bright stainless steel anti-corrosion oil pipe that makes or sleeve pipe and other anti-corrosion pipe erosion rate mensuration:
By the CO that 18-8,1Cr13,10gAl, N80Zn, these several typical materials of N80Zn-Al-RE, N80 are carried out in autoclave
2Corrosion weight loss is tested, and studies their corrosion behavior; Wherein 18-8 is 1Cr18Ni9Ti; 1Cr13 is the half martensite stainless steel, and its chrome content is 12%～14%; 10gAl is a 10# steel aluminising sample; N80Zn is a N80 base zincizing sample; N80Zn-Al-RE is a N80 base zinc-aluminium multicomponent alloy stainless steel sample; N80 is an oil-gas field oil pipe grade of steel commonly used.
Stainless steel anti-corrosion pipe N80Zn-Al-RE and other anti-corrosion pipe erosion rate are measured table 3
Table 1 orthogonal test scheme and result
| Sequence number | A temperature ℃ | B PCO 2 Mpa | C mineral degree g/L | D PH | Erosion rate mm/a | |||||
| 1 | 2 | 3 | 4 | N80 | 1Cr13 | 18-8 | N80Zn | 10gAL | N80Zn-Al-RE | |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | 1(20) 1(20) 1(20) 1(20) 1(50) 1(50) 1(50) 1(50) 3(80) 3(80) 3(80) 3(80) 4(110) 4(110) 4(110) 4(110) | 1(0.2) 2(0.6) 3(1.2) 4(2.5) 1(0.2) 2(0.6) 3(1.2) 4(2.5) 1(0.20 2(0.6) 3(1.2) 4(2.5) 1(0.2) 2(0.6) 3(1.2) 4(2.5) | 1(156.133) 2(78.07) 3(39.033) 4(19.517) 2(78.07) 1(156.133) 4(19.517) 3(39.033) 3(39.033) 4(19.517) 1(156.133) 2(78.07) 4(19.517) 3(39.033) 2(78.07) 1(156.133) | 1(2) 2(4) 3(6) 4(8) 4(8) 3(6) 2(4) 1(2) 2(4) 1(2) 4(8) 3(6) 3(6) 4(8) 1(2) 2(4) | 0.421 5.964 8.252 10.072 8.458 6.19 5.416 8.952 5.464 10.254 4.3 3.445 6.202 1.511 6.183 8.46 | 0.169 0.094 0.012 0.124 0.151 0.078 0.214 0.598 0.015 0.12 0.17 0.288 0.027 0.02 0.245 0.069 | 0.007 0.001 0.001 0.002 0.002 0.002 0.004 0.007 0.004 0.002 0.002 0.003 0.002 0.003 0.004 0.005 | 2.584 6.639 6.942 4.606 1.585 0.84 2.971 5.055 3.759 2.704 1.521 1.941 1.192 2.549 2.93 6.197 | 0.608 0.619 0.862 0.303 0.247 0.165 0.641 1.103 0.198 0.153 0.503 0.481 0.159 0.695 0.544 1.463 | 0.265 0.151 0.328 0.589 0.246 0.187 0.315 0.622 0.148 0.140 0.254 0.317 0.195 1.248 0.286 0.087 |
| Average corrosion rate mm/a | 6.222 | 0.150 | 0.003 | 3.376 | 0.547 | 0.336 | ||||
The stainless steel anti-corrosion pipe sample that N80Zn-Al-RE makes for the present invention in the table 3, concrete technology is: at first oil pipe or sleeve pipe are carried out ball blast, in NaOH solution, soak afterwards and removed surface and oil contaminant in 3 minutes, water is washed the oil residues dirt off, again effective 15% hydrochloric acid is cleaned and carried out oil removal treatment in 5 minutes, wash residual acid off with clear water, by K
2ZrF
6100g/L, KCl100g/L, help plating 2 minutes in the quickening liquid of NaF1g/L and excess water preparation, oven dry is 2 minutes in 120 ℃ of slot type drying pools, pipe is immersed in the aluminium multicomponent alloy liquid, zinc content 29% in the aluminium multicomponent alloy liquid, chromium content 12%, nickel content 10%, silicone content 5%, press the content of rare earth 0.05% of quality preparation in 1: 1 by lanthanum and cerium, surplus is an aluminium liquid, smelting is 4 minutes under 720 ℃ of conditions, water-cooled behind the air cooling, and carry out screw thread place electric-arc thermal spray coating, its spraying material aluminum-alloy wire and zinc silk, the mass ratio of aluminum-alloy wire and zinc silk 2: 1, the two melts under 4200 ℃ of effects of electric arc, be sprayed on thread surface by high pressure gas, make stainless steel anti-corrosion oil pipe or sleeve pipe, be reprocessed into test sample afterwards.
Stainless steel anti-corrosion pipe N80Zn-Al-RE and other anti-corrosion pipe erosion rate are measured table 4
Orthogonal test scheme and result
| Sequence number | A temperature ℃ | B PCO 2 Mpa | C mineral degree g/L | D PH | Erosion rate mm/a | |||||
| 1 | 2 | 3 | 4 | N80 | 1Cr13 | 18-8 | N80Zn | 10gAL | N80Zn-Al-RE | |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | 1(20) 1(20) 1(20) 1(20) 1(50) 1(50) 1(50) 1(50) 3(80) 3(80) 3(80) 3(80) 4(110) 4(110) 4(110) 4(110) | 1(0.2) 2(0.6) 3(1.2) 4(2.5) 1(0.2) 2(0.6) 3(1.2) 4(2.5) 1(0.20 2(0.6) 3(1.2) 4(2.5) 1(0.2) 2(0.6) 3(1.2) 4(2.5) | 1(156.133) 2(78.07) 3(39.033) 4(19.517) 2(78.07) 1(156.133) 4(19.517) 3(39.033) 3(39.033) 4(19.517) 1(156.133) 2(78.07) 4(19.517) 3(39.033) 2(78.07) 1(156.133) | 1(2) 2(4) 3(6) 4(8) 4(8) 3(6) 2(4) 1(2) 2(4) 1(2) 4(8) 3(6) 3(6) 4(8) 1(2) 2(4) | 0.421 5.964 8.252 10.072 8.458 6.19 5.416 8.952 5.464 10.254 4.3 3.445 6.202 1.511 6.183 8.46 | 0.169 0.094 0.012 0.124 0.151 0.078 0.214 0.598 0.015 0.12 0.17 0.288 0.027 0.02 0.245 0.069 | 0.007 0.001 0.001 0.002 0.002 0.002 0.004 0.007 0.004 0.002 0.002 0.003 0.002 0.003 0.004 0.005 | 2.584 6.639 6.942 4.606 1.585 0.84 2.971 5.055 3.759 2.704 1.521 1.941 1.192 2.549 2.93 6.197 | 0.608 0.619 0.862 0.303 0.247 0.165 0.641 1.103 0.198 0.153 0.503 0.481 0.159 0.695 0.544 1.463 | 0.214 0.251 0.138 0.517 0.236 0.179 0.295 0.631 1.254 0.114 0.264 0.371 0.184 1.247 0.296 0.078 |
| Average corrosion rate mm/a | 6.222 | 0.15 | 0.003 | 3.376 | 0.547 | 0.390 | ||||
The stainless steel anti-corrosion pipe sample that N80Zn-Al-RE makes for the present invention in the table 4, concrete technology is: at first oil pipe or sleeve pipe are carried out ball blast, in NaOH solution, soak afterwards and removed surface and oil contaminant in 5 minutes, water is washed the oil residues dirt off, again effective 15% hydrochloric acid is cleaned and carried out oil removal treatment in 7 minutes, wash residual acid off with clear water, by K
2ZrF
6100g/L, KCl100g/L, help plating 2 minutes in the quickening liquid of NaF1g/L and excess water preparation, oven dry is 2 minutes in 120 ℃ of slot type drying pools, pipe is immersed in the aluminium multicomponent alloy liquid, zinc content 30% in the aluminium multicomponent alloy liquid, chromium content 10%, nickel content 8%, silicone content 5%, press the content of rare earth 0.03% of quality preparation in 1: 1 by lanthanum and cerium, surplus is an aluminium liquid, smelting is 5 minutes under 700 ℃ of conditions, water-cooled behind the air cooling, and carry out screw thread place electric-arc thermal spray coating, its spraying material aluminum-alloy wire and zinc silk, the mass ratio of aluminum-alloy wire and zinc silk 2: 1, the two melts under 4200 ℃ of effects of electric arc, be sprayed on thread surface by high pressure gas, make stainless steel anti-corrosion oil pipe or sleeve pipe, be reprocessed into test sample afterwards.
Stainless steel anti-corrosion pipe N80Zn-Al-RE and other anti-corrosion pipe erosion rate are measured table 5
Orthogonal test scheme and result
| Sequence number | A temperature ℃ | B PCO 2 Mpa | C mineral degree g/L | D PH | Erosion rate mm/a | |||||
| 1 | 2 | 3 | 4 | N80 | 1Cr13 | 18-8 | N80Zn | 10gAL | N80Zn-Al-RE | |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | 1(20) 1(20) 1(20) 1(20) 1(50) 1(50) 1(50) 1(50) 3(80) 3(80) 3(80) 3(80) 4(110) 4(110) 4(110) 4(110) | 1(0.2) 2(0.6) 3(1.2) 4(2.5) 1(0.2) 2(0.6) 3(1.2) 4(2.5) 1(0.20 2(0.6) 3(1.2) 4(2.5) 1(0.2) 2(0.6) 3(1.2) 4(2.5) | 1(156.133) 2(78.07) 3(39.033) 4(19.517) 2(78.07) 1(156.133) 4(19.517) 3(39.033) 3(39.033) 4(19.517) 1(156.133) 2(78.07) 4(19.517) 3(39.033) 2(78.07) 1(156.133) | 1(2) 2(4) 3(6) 4(8) 4(8) 3(6) 2(4) 1(2) 2(4) 1(2) 4(8) 3(6) 3(6) 4(8) 1(2) 2(4) | 0.421 5.964 8.252 10.072 8.458 6.19 5.416 8.952 5.464 10.254 4.3 3.445 6.202 1.511 6.183 8.46 | 0.169 0.094 0.012 0.124 0.151 0.078 0.214 0.598 0.015 0.12 0.17 0.288 0.027 0.02 0.245 0.069 | 0.007 0.001 0.001 0.002 0.002 0.002 0.004 0.007 0.004 0.002 0.002 0.003 0.002 0.003 0.004 0.005 | 2.584 6.639 6.942 4.606 1.585 0.84 2.971 5.055 3.759 2.704 1.521 1.941 1.192 2.549 2.93 6.197 | 0.608 0.619 0.862 0.303 0.247 0.165 0.641 1.103 0.198 0.153 0.503 0.481 0.159 0.695 0.544 1.463 | 0.114 0.247 0.145 0.497 0.156 0.198 0.245 0.661 0.287 1.224 0.274 0.671 0.184 0.118 0.075 0.078 |
| Average corrosion rate mm/a | 6.222 | 0.15 | 0.003 | 3.376 | 0.547 | 0.320 | ||||
The stainless steel anti-corrosion pipe sample that N80Zn-Al-RE makes for the present invention in the table 5, concrete technology is: at first oil pipe or sleeve pipe are carried out ball blast, in NaOH solution, soak afterwards and removed surface and oil contaminant in 5 minutes, water is washed the oil residues dirt off, again effective 15% hydrochloric acid is cleaned and carried out oil removal treatment in 7 minutes, wash residual acid off with clear water, by K
2ZrF
6100g/L, KCl100g/L, help plating 2 minutes in the quickening liquid of NaF1g/L and excess water preparation, oven dry is 2 minutes in 120 ℃ of slot type drying pools, pipe is immersed in the aluminium multicomponent alloy liquid, zinc content 28% in the aluminium multicomponent alloy liquid, chromium content 13%, nickel content 7%, silicone content 4%, press the content of rare earth 0.02% of quality preparation in 1: 1 by lanthanum and cerium, surplus is an aluminium liquid, smelting is 3 minutes under 750 ℃ of conditions, water-cooled behind the air cooling, and carry out screw thread place electric-arc thermal spray coating, its spraying material aluminum-alloy wire and zinc silk, the mass ratio of aluminum-alloy wire and zinc silk 2: 1, the two melts under 4200 ℃ of effects of electric arc, be sprayed on thread surface by high pressure gas, make stainless steel anti-corrosion oil pipe or sleeve pipe, be reprocessed into test sample afterwards.
Experimental result and analysis: six kinds of samples through 3 days autoclave test after, except the 18-8 stainless steel surface change less, the different corrosion of degree has all taken place other sample: 1Cr13 and N80Zn-Al-RE are lighter; And zincizing and aluminising sample mainly are uniform corrosion.N80 is more serious, and the corrosion of ulcer type is arranged; Experiment this time draws six kinds of samples at CO
2Anti-corrosion order in the environment: 18-8＞1Cr13＞N80Zn-Al-RE＞10gAl＞N80Zn＞N80.The oil pipe solidity to corrosion of this explanation behind stainless steel be a little less than 18-8 and 1Cr13, and all better than other anti-corrosion method.
Have good corrosion resistance by stainless steel anti-corrosion oil pipe or the sleeve pipe that the present invention makes as can be known by above-mentioned experiment, be mainly used in deep-etching CO
2Inject extraction oil gas well, poly-displacement of reservoir oil well, ternary displacement of reservoir oil well, injection gas displacement gas well, deep-etching, strong fouling well, serious waxing in production well and gasser etc.
Claims (5)
1. manufacture craft that is used for the stainless steel anti-corrosion pipe of oil-gas field is characterized in that:
At first oil pipe or sleeve pipe are carried out ball blast, in NaOH solution, soak afterwards and removed surface and oil contaminant in 3～5 minutes, water is washed the oil residues dirt off, again effective 15% hydrochloric acid is cleaned and carried out oil removal treatment in 5～7 minutes, wash residual acid off with clear water, in quickening liquid, help plating 2 minutes, oven dry is 2 minutes in 120 ℃ of slot type drying pools, pipe is immersed in the aluminium multicomponent alloy liquid, smelting is 3～5 minutes under 700～750 ℃ of conditions, make body surface stainless steel, air cooling afterwards, water-cooled, and carry out screw thread place electric-arc thermal spray coating, its spraying material aluminum-alloy wire and zinc silk, the two melts under arcing, is sprayed on thread surface by high pressure gas, makes stainless steel anti-corrosion oil pipe or sleeve pipe.
2. a kind of manufacture craft that is used for the stainless steel anti-corrosion pipe of oil-gas field according to claim 1 is characterized in that: zinc content 28～30% in the aluminium multicomponent alloy liquid, chromium content 10～13%, nickel content 7～10%, silicone content 4～5%, content of rare earth 0.01～0.05%, surplus is an aluminium liquid.
3. a kind of manufacture craft that is used for the stainless steel anti-corrosion pipe of oil-gas field according to claim 2 is characterized in that: rare earth is formulated by quality 1: 1 by lanthanum and cerium.
4. a kind of manufacture craft that is used for the stainless steel anti-corrosion pipe of oil-gas field according to claim 1, it is characterized in that: quickening liquid is by K
2ZrF
6100g/L, KCl100g/L, NaF1g/L and excess water are formed; The mass ratio of aluminum-alloy wire and zinc silk 2: 1.
5. the stainless steel anti-corrosion pipe that makes of the method for claim 1.
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| CNB2007101449319A CN100560804C (en) | 2007-12-27 | 2007-12-27 | A kind of stainless steel anti-corrosion pipe that is used for oil-gas field and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605155A (en) * | 2012-04-06 | 2012-07-25 | 扬州华展管件有限公司 | Pipe fitting processing process for liquefied natural gas deep cooling device |
| CN103668252A (en) * | 2013-12-21 | 2014-03-26 | 安徽水利开发股份有限公司 | Environment friendly rust cleaning, oil removing and corrosion preventing method for steel structures |
| CN103884218A (en) * | 2014-04-14 | 2014-06-25 | 中钢集团鞍山热能研究院有限公司 | Eccentric type radial heat exchange pipe |
| CN107815630A (en) * | 2017-10-18 | 2018-03-20 | 三峡大学 | A kind of Q235 alumetized steels and preparation method thereof |
| CN110841828A (en) * | 2019-11-26 | 2020-02-28 | 江国升 | Steel pipe surface anticorrosive paint spraying process |
| CN111716254A (en) * | 2019-03-20 | 2020-09-29 | 天津市同鑫泰钢管制造有限公司 | Crack-resistant rust-removing processing technology for long-distance transportation spiral steel pipe |
-
2007
- 2007-12-27 CN CNB2007101449319A patent/CN100560804C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605155A (en) * | 2012-04-06 | 2012-07-25 | 扬州华展管件有限公司 | Pipe fitting processing process for liquefied natural gas deep cooling device |
| CN102605155B (en) * | 2012-04-06 | 2013-04-24 | 扬州华展管件有限公司 | Pipe fitting processing process for liquefied natural gas deep cooling device |
| CN103668252A (en) * | 2013-12-21 | 2014-03-26 | 安徽水利开发股份有限公司 | Environment friendly rust cleaning, oil removing and corrosion preventing method for steel structures |
| CN103668252B (en) * | 2013-12-21 | 2016-03-09 | 安徽水利开发股份有限公司 | The pre-anti-corrosion method of environment protection steel structure rust cleaning oil removing |
| CN103884218A (en) * | 2014-04-14 | 2014-06-25 | 中钢集团鞍山热能研究院有限公司 | Eccentric type radial heat exchange pipe |
| CN107815630A (en) * | 2017-10-18 | 2018-03-20 | 三峡大学 | A kind of Q235 alumetized steels and preparation method thereof |
| CN111716254A (en) * | 2019-03-20 | 2020-09-29 | 天津市同鑫泰钢管制造有限公司 | Crack-resistant rust-removing processing technology for long-distance transportation spiral steel pipe |
| CN110841828A (en) * | 2019-11-26 | 2020-02-28 | 江国升 | Steel pipe surface anticorrosive paint spraying process |
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| CN100560804C (en) | 2009-11-18 |
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