CN104653117A - Production process of petroleum casing pipe - Google Patents
Production process of petroleum casing pipe Download PDFInfo
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- CN104653117A CN104653117A CN201310578720.1A CN201310578720A CN104653117A CN 104653117 A CN104653117 A CN 104653117A CN 201310578720 A CN201310578720 A CN 201310578720A CN 104653117 A CN104653117 A CN 104653117A
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Abstract
The invention relates to a production process of a petroleum casing pipe, in particular to a side tracking petroleum casing pipe for a petroleum and natural gas extraction industry and a production process thereof. The petroleum casing pipe comprises the chemical components of 0.23-0.40 of C, 0.15-0.50 of Si, 0.60-1.60 of Mn, P not more than 0.25, S not more than 0.15, 0.40-1.60 of Cr, 0.10-0.40 of Mo, Cu not more than 0.30 and the balance of Fe. The invention further provides the production process of the side tracking petroleum casing pipe for the petroleum and natural gas extraction industry. The production process comprises the steps of: smelting of steel raw materials; steel making; heating of a cooled continuous casting slab in an annular heating furnace, wherein the furnace temperature is 1250-1290 DEG C, the thermal centering temperature is 1200-1220 DEG C, and the thermal perforation temperature is 1220-1250 DEG C; continuous rolling; sizing; cooling; sawing; straightening; flaw detection; heat treatment; final flaw detection; and joint thread machining. The side tracking casing pipe produced by the process can guarantee smooth access into a well, an enough space is kept for mounting a sucker rod and an oil well pump in the subsequent oil extraction operation to quickly recover normal oil and gas extraction, and thus the well drilling cost is greatly reduced.
Description
Technical field
The present invention relates to a kind of petroleum casing pipe production technology, particularly a kind of sidetracking petroleum case pipe for petroleum natural gas mining industry and production technology thereof.
Background technology
Every year, there is the production string in a large amount of oil, the natural gas well to be damaged both at home and abroad, cause Oil/gas Well normally to produce, new well must be beaten, thus cause larger economic loss.Some old wells due to recover the oil the time long, the damages such as production string demutation corrosion, oil producing operation cannot be continued, meanwhile, the oil production of old well greatly reduces, and the expense of beating new well in original place will be difficult to regain, and carrying out sidetracking oil reservoir by utilizing the protective casing of former well will reduce drilling cost at double, to be easy to reclaim drilling cost by recovering the oil, the recovery ratio so both adding crude oil turn increases the economic benefit in oil field.
Summary of the invention
For solving Problems existing in above-mentioned technology, the object of the invention is to design a kind of oil and gas exploitation industrial sidetracking high strength petroleum sleeve pipe and production method thereof from the physical dimension of sleeve pipe, joint form and performance indications, need carry out sidetracking to recover the actual needs of normal exploitation as early as possible to meet a large amount of Oil/gas Well that cannot continue normal production because production string lost efficacy both at home and abroad, this petroleum casing pipe is non-API steel level oil bushing.
For achieving the above object, technical solution of the present invention is to provide a kind of petroleum casing pipe production technology, the chemical analysis of this petroleum casing pipe and % by weight is: Mn=0. 60 ~ 1.60 P≤0.25 S≤0.15Cr mono-0.40 ~ 1.60 Mo=0.10 ~ 0.40 Cu≤0.30, Si=0.15 ~ 0.50, C=0.23 ~ 0.40 surplus is Fe, wherein: the external diameter 3-3/4 inch of this petroleum casing pipe, wall thickness is 5.0-10.Omm; The joint form of described petroleum casing pipe is the 3-1/2 inch external upset tubing joint in API 5B, this laced belt box cupling, pitch is per inch 8 tooth, the pitch diameter of thread is 3.66395 inches, male end full stand of thread is 2.375 inches, it is 1.375 inches that male end pushes up reach entirely, unobstructed smoothly when entering well for the ease of this sleeve pipe, the external diameter of box cupling is 110mm, and the overall functional performance of this petroleum casing pipe reaches: body collapse resistance: >=58Mpa strength of joint: yield strength in >=736KN body: >=76Mpa.
Effect of the present invention is the sidetracking sleeve pipe adopting this explained hereafter, and its external diameter is less than 4-1/2 inch small casing, is greater than 3-1/2 inch external upset tubing, and the external diameter of its box cupling is less than the external diameter of 3-1/2 inch external upset tubing box cupling.What so not only can ensure this sidetracking sleeve pipe enters well smoothly, gives again in follow-up oil producing operation to install sucker rod and oil well pump leaves enough spaces.By utilizing sidetracking sleeve pipe, in the bottom of unspoiled protective casing, getting out new well from the side direction of former production string, entering oil-gas Layer by under sidetracking sleeve pipe, just can recover normal oil-gas mining, thus greatly reduce drilling cost.This sleeve pipe pipe material adopts low alloy Cr Mo steel, adopts molten iron+high-quality steel scrap as steelmaking feed, and continuous casting billet, after being rolled into seamless pipe, ensures intensity and the toughness of sleeve pipe through modifier treatment.By utilizing sidetracking petroleum case pipe for petroleum natural gas mining industry, in the bottom of unspoiled protective casing, get out new well from the side direction of former production string, enter oil-gas Layer by under sidetracking sleeve pipe, just can recover normal oil-gas mining, thus greatly reduce drilling cost.
Detailed description of the invention
A kind of petroleum casing pipe production technology of the present invention, sidetracking petroleum case pipe for petroleum natural gas mining industry, the chemical analysis of this petroleum casing pipe and % by weight is: Cu≤0.30, Mo=0.10 ~ 0.40, Cr=0.40 ~ 1.60, S≤0.15, Mn=0.60 ~ 1.60 P≤0.25, Si=0.15 ~ 0.50, C=0.23 ~ 0.40 surplus is Fe; The external diameter 3-3/4 inch (95.25mm) of this petroleum casing pipe, wall thickness is 5.0-10.0mm; The joint screw thread processing of described petroleum casing pipe: will the body of above-mentioned requirements be met, numerical control machine for threading is processed into screw thread, comprise box cupling screw thread and pipe thread, the major parameter of screw thread is 3-1/2 inch (88. 90mm) the external upset tubing joint in API 5B, this laced belt box cupling, pitch is per inch 8 tooth, and the pitch diameter of thread is 3. 66395 inches, male end full stand of thread is 2.375 inches, and it is 1. 375 inches that male end pushes up reach entirely.Unobstructed smoothly when entering well for the ease of this sleeve pipe, the external diameter of box cupling is ll0mm.The length of male end effective thread is ensured by the physical dimension controlling body, reasonably optimizing thread parameter, with the phosphate coating thickness of strict control box cupling screw thread and by the starting buckle and the black skin buckle burr that prop up reconditioning male and female end screw thread, ensures the good seal performance that is threaded.
The production technology of sidetracking petroleum case pipe for petroleum natural gas mining industry of the present invention, this technique comprises the following steps:
1. steelmaking feed: adopt molten iron, steel scrap and sponge iron to do steelmaking feed;
2. make steel: with electric arc furnaces, steelmaking feed is fused into molten steel, after external refining and vacuum outgas, obtains chemical analysis described above, continuous casting becomes circle base;
3. heated in rotary heating furnace by cooled continuous casting billet, furnace temperature is 1250 ~ 1290 DEG C, and heat centering temperature is 1200 ~ 1220 DEG C, and hot piercing temperature is 1220 ~ 1250 DEG C, tandem rolling, sizing, cooling, sawing, aligning, flaw detection;
4. heat treatment: the shrend quenching in temperature being 850 ~ 950 DEG C of quenchings is 550 ~ 650 DEG C of tempering in temperature; Be 500 ~ 600 DEG C of hot sizes in temperature, be 450 DEG C ~ 550 DEG C thermal straightenings in temperature, finally detect a flaw.After thermal straightening, the anti-outer ability of squeezing distortion of described sleeve pipe is made to reach the level of high collapse-resistance casing.After modulation treatment, the index that the mechanical property of described sleeve pipe reaches is as follows: yield strength: 550 ~ 1070Mpa tensile strength: >=600Mpa elongation per unit length: >=13% impact toughness: longitudinally full-scale Charpy-V impact power >=50J laterally full-scale Charpy-V impact power >=35J;
5. joint screw thread processing: will the body of above-mentioned requirements be met, numerical control machine for threading is processed into screw thread, comprise box cupling screw thread and pipe thread, the major parameter of screw thread is 3-1/2 inch (88. 90mm) the external upset tubing joint in API 5B, this laced belt box cupling, pitch is per inch 8 tooth, and the pitch diameter of thread is 3. 66395 inches, male end full stand of thread is 2.375 inches, and it is 1. 375 inches that male end pushes up reach entirely.Unobstructed smoothly when entering well for the ease of this sleeve pipe, the external diameter of box cupling is 110mm.The length of male end effective thread is ensured by the physical dimension controlling body, reasonably optimizing thread parameter, with the phosphate coating thickness of strict control box cupling screw thread and by the starting buckle and the black skin buckle burr that prop up reconditioning male and female end screw thread, ensures the good seal performance that is threaded.For ￠ 95. 25 × 5.5lmm TPIIOV, the overall functional performance of sleeve pipe meets following requirement: body collapse resistance: >=58Mpa strength of joint: yield strength in >=736KN body: >=76Mpa.
This process characteristic is: adopt molten iron+high-quality steel scrap as steelmaking feed, continuous casting billet is after being rolled into seamless pipe, and ensure intensity and the toughness of sleeve pipe through modifier treatment (quenching+tempering), microscopic structure is: tempered sorbite.Its yield strength scope is: 550 ~ 1070Mpa, and tensile strength is not less than 600Mpa, and elongation per unit length is not less than 13%, the requirement of impact toughness: longitudinally full-scale Charpy-V impact power is not less than 50J, and laterally full-scale Charpy-V impact power is not less than 35J.
The object of the present invention is achieved like this:
The chemical analysis of described sleeve pipe and % by weight is: Cr mono-0.40 ~ 1.60 Mo mono-0.10 ~ 0.40 Cu≤0.30, P≤0.25S≤0.15, Mn=0.60 ~ 1.60, Si=0.15 ~ 0.50, C=0.23 ~ 0.40 surplus is Fe.
The physical dimension of described sleeve pipe: external diameter 3-3/4 inch (95. 25mm), wall thickness is 5.0-10.Omm.
The joint screw thread processing of described sleeve pipe: will the body of above-mentioned requirements be met, numerical control machine for threading is processed into screw thread, comprise box cupling screw thread and pipe thread, the major parameter of screw thread is 3-1/2 inch (88. 90mm) the external upset tubing joint in API 5B, this laced belt box cupling, pitch is per inch 8 tooth, and the pitch diameter of thread is 3.66395 inches, male end full stand of thread is 2.375 inches, and it is 1.375 inches that male end pushes up reach entirely.Unobstructed smoothly when entering well for the ease of this sleeve pipe, the external diameter of box cupling is llOmm.The length of male end effective thread is ensured by the physical dimension controlling body, reasonably optimizing thread parameter, with the phosphate coating thickness of strict control box cupling screw thread and by the starting buckle and the black skin buckle burr that prop up reconditioning male and female end screw thread, ensures the good seal performance that is threaded.
Form is 3-1/2 inch (88. 90mm) the external upset tubing joint (8 tooth round threads, band box cupling) in API 5B.
The process of described sleeve pipe is: adopt molten iron and steel scrap to do steelmaking feed, be fused into molten steel, with electric arc furnaces after external refining and vacuum outgas, obtain chemical analysis described above, continuous casting becomes circle base, is heated by cooled continuous casting billet in rotary heating furnace, furnace temperature is 1250 ~ 1290 DEG C, and heat centering temperature is 1200 ~ 1220 DEG C, and hot piercing temperature is 1220 ~ 1250 DEG C, tandem rolling, sizing, cooling, sawing, aligning, flaw detection; Heat treatment: the shrend quenching in temperature being 850 ~ 950 DEG C is 550 ~ 650 DEG C of tempering in temperature; Be 500 ~ 600 DEG C of hot sizes in temperature, be 450 DEG C ~ 550 DEG C thermal straightenings in temperature, finally detect a flaw.
After modulation treatment, the index that the mechanical property of described sleeve pipe reaches is as follows: yield strength: 550 ~ 1070Mpa tensile strength: >=600Mpa
Elongation per unit length: >=13% impact toughness: longitudinally full-scale Charpy-V impact power >=50J laterally full-scale Charpy-V impact power >=35J.Joint screw thread is processed: will meet the body of above-mentioned requirements, numerical control machine for threading is processed into screw thread, comprise box cupling screw thread and pipe thread, the major parameter of screw thread is 3-1/2 inch (88. 90mm) the external upset tubing joint in API 5B, this laced belt box cupling, pitch is per inch 8 tooth, and the pitch diameter of thread is 3. 66395 inches, male end full stand of thread is 2.375 inches, and it is 1. 375 inches that male end pushes up reach entirely.Unobstructed smoothly when entering well for the ease of this sleeve pipe, the external diameter of box cupling is llOmm.The length of male end effective thread is ensured by the physical dimension controlling body, reasonably optimizing thread parameter, with the phosphate coating thickness of strict control box cupling screw thread and by the starting buckle and the black skin buckle burr that prop up reconditioning male and female end screw thread, ensures the good seal performance that is threaded.
Sleeve pipe overall performance (for ￠ 95. 25 × 5.512mm TPIIOV) body collapse resistance: >=58Mpa strength of joint: >=736KN
Yield strength in body: >=76Mpa.
Embodiment:
The petroleum casing pipe gone out by described composition and explained hereafter is for TPIIOV (￠ 95. 25 × 5.512mm), its chemical composition and working process parameter as follows: the chemical analysis of described sleeve pipe and % by weight is: C 0.26%, Si 0.18%, Mn l.05%, Cr 0.98%, M0 0.18%, Ni 0.07%, Cu 0.11%, P 0.014%, SO. 010%, surplus is Fe.
Adopt molten iron and steel scrap to do steelmaking feed, be fused into molten steel with electric arc furnaces, after external refining and vacuum outgas, obtain chemical analysis described above, continuous casting becomes circle base, is heated by cooled continuous casting billet in rotary heating furnace, furnace temperature is 1285 DEG C, and heat centering temperature is 1210 DEG C, and hot piercing temperature is 1230 DEG C, tandem rolling, sizing, cooling, sawing, aligning, flaw detection; Heat treatment: the shrend quenching in temperature being 910 DEG C is 630 DEG C of tempering in temperature; Be 600 DEG C of hot sizes in temperature, temperature is 530 DEG C of thermal straightenings, finally detects a flaw.
After heat treatment, the index that reaches of the mechanical property of described sleeve pipe is as follows: yield strength (Rt0.6) 865Mpa tensile strength (Rm) 9IOMpa elongation per unit length 24. 0%.
The body of above-mentioned requirements will be met, numerical control machine for threading is processed into screw thread, comprise box cupling screw thread and pipe thread, the major parameter of screw thread is 3-1/2 inch (88. 90mm) the external upset tubing joint in API 5B, this laced belt box cupling, pitch is per inch 8 tooth, and the pitch diameter of thread is 3. 66395 inches, male end full stand of thread is 2.375 inches, and it is 1. 375 inches that male end pushes up reach entirely.Unobstructed smoothly when entering well for the ease of this sleeve pipe, the external diameter of box cupling is llOmm.The length of male end effective thread is ensured by the physical dimension controlling body, reasonably optimizing thread parameter, with the phosphate coating thickness of strict control box cupling screw thread and by the starting buckle and the black skin buckle burr that prop up reconditioning male and female end screw thread, ensures the good seal performance that is threaded.The index that the overall functional performance of sleeve pipe reaches is as follows: body collapse resistance: 65Mpa slippage strength: yield strength in 812KN: 85Mpa.
Claims (1)
1. a petroleum casing pipe production technology, the chemical analysis of this petroleum casing pipe and % by weight is: P≤0.25, Mn=0.60 ~ 1.60, Si=0.15 ~ 0.50, C=0.23 ~ 0.40 S≤0.15 Cr=0.40 ~ 1. 60 Cu≤0.30, Mo=0.10 ~ 0.40 surpluses are Fe, it is characterized in that: the external diameter 3-3/4 inch of this petroleum casing pipe, wall thickness is 5.0-10. Omm; The joint form of described petroleum casing pipe is the 3-1/2 inch external upset tubing joint in API 5B, this laced belt box cupling, pitch is per inch 8 tooth, the pitch diameter of thread is 3. 66395 inches, male end full stand of thread is 2.375 inches, it is 1.375 inches that male end pushes up reach entirely, unobstructed smoothly when entering well for the ease of this sleeve pipe, the external diameter of described box cupling is 110mm, and the overall functional performance of this petroleum casing pipe reaches: body collapse resistance: >=58Mpa strength of joint: yield strength in >=736KN body: >=76Mpa.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483542A (en) * | 2016-01-27 | 2016-04-13 | 南京工程学院 | Steel for deep sea oil extraction equipment and manufacturing method of steel forge piece for deep sea oil extraction equipment |
| CN105483561A (en) * | 2015-12-16 | 2016-04-13 | 常熟市虹桥铸钢有限公司 | Annular preventer shell |
| CN105671431A (en) * | 2016-01-27 | 2016-06-15 | 南京工程学院 | Manufacturing method of steel and forge piece thereof for valve seat of deep sea oil extraction equipment |
| CN108103399A (en) * | 2017-12-11 | 2018-06-01 | 中铁工程装备集团有限公司 | A kind of assembly technology of hobboing cutter spacer ring and spacer ring on disk cutter |
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2013
- 2013-11-19 CN CN201310578720.1A patent/CN104653117A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483561A (en) * | 2015-12-16 | 2016-04-13 | 常熟市虹桥铸钢有限公司 | Annular preventer shell |
| CN105483542A (en) * | 2016-01-27 | 2016-04-13 | 南京工程学院 | Steel for deep sea oil extraction equipment and manufacturing method of steel forge piece for deep sea oil extraction equipment |
| CN105671431A (en) * | 2016-01-27 | 2016-06-15 | 南京工程学院 | Manufacturing method of steel and forge piece thereof for valve seat of deep sea oil extraction equipment |
| CN105671431B (en) * | 2016-01-27 | 2017-04-19 | 南京工程学院 | Manufacturing method of steel and forge piece thereof for valve seat of deep sea oil extraction equipment |
| CN108103399A (en) * | 2017-12-11 | 2018-06-01 | 中铁工程装备集团有限公司 | A kind of assembly technology of hobboing cutter spacer ring and spacer ring on disk cutter |
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