CN107151761A - A kind of high toughness petroleum drilling rod and its manufacture method - Google Patents
A kind of high toughness petroleum drilling rod and its manufacture method Download PDFInfo
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- CN107151761A CN107151761A CN201610962371.7A CN201610962371A CN107151761A CN 107151761 A CN107151761 A CN 107151761A CN 201610962371 A CN201610962371 A CN 201610962371A CN 107151761 A CN107151761 A CN 107151761A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
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Abstract
The invention discloses a kind of high toughness petroleum drilling rod and its manufacture method, the mass percent composition of the steel grades of the drill pipe body is：C：0.21% 0.27%, Si：0.25% 0.40%, Mn：1.05% 1.25%, Cr：0.90% 1.15%, Mo：0.30% 0.50%, Ni：≤ 0.1%, V：0.04% 0.10%, Cu：0 0.10%, S：≤ 0.005%, P：≤ 0.015%, surplus is Fe, and unit is mass percent.Its manufacture method comprises the steps：(1) seamless steel pipe two ends are thickeied：1,200 1300 DEG C will be heated within pipe end 500mm, two ends are thickeied using mechanical jumping-up, drill pipe body is made；Mode of heating uses intermediate frequency heating；(2) drill pipe body being made carries out bulk heat treatmet, and Technology for Heating Processing is quenching+high tempering；(3) weld.Consumption of the invention by reducing the noble metal such as Cr, Mo, Ni in steel grade, in the case where intensity is constant, substantially reduces production cost；By composition adjustment and rational Technology for Heating Processing, the toughness of drilling rod is greatly improved, deep-well, ultradeep well working condition demand is disclosure satisfy that.
Description
Technical field
The present invention relates to the manufacturing technology of drilling rod, especially a kind of high toughness petroleum drilling rod and its manufacture method belong to stone
Oily drill pipe art.
Background technology
The exploration and development of Deep Oil And Gas Exploration resource, is to realize the main path that oilfield Resources Strategy is taken over.Greatly develop
Deep ＆ ultra-deep well drilling technology, is also active adaption drilling engineering technological service market competition the need for being both exploration and development
Need.
Relevant information shows, Chinese oil mining resources amount is expected to be 15,000,000,000 tons at present, to be found and verify 8,500,000,000 tons
Left and right, accounts for the 57% of recoverable oil resource discovery degree.This part petroleum resources to be verified are mainly distributed on Tarim Basin, quasi- main officer of Tibet
That, Qaidam, four basins in Kazakhstan are told, be that the main of CNPC's yield takes over area；Meanwhile, the 73% of this part resource amount buries
Below 5000m.Realize that new area, frontier, the oil gas of new layer position especially deep layer are broken through, find and expand oil field oil-containing
Gas scope and field, as smoothly realizing that Chinese petroleum corporation takes over the Main Means of target, deep ＆ ultra-deep well drilling technology
Quickly, scale development is then the most important implementation of this means.
Oil drill rocker is the main tool of oil drilling, and structure includes the drilling rod connecting at drill pipe body and drill pipe body two ends
Head.In the recovery process of oil gas, it is desirable to use high-strength drill pipe, drill pipe body allows for bearing huge interior external pressure, torsion
Bent, bending and vibration.Standard S steel grade drill pipes in current API 5DP, its yield strength is between 931-1138MPa, impact
Work(requires that (20 DEG C, 7.5x10mm) is more than 43J, but it the phenomenons such as puncture, corrosion and fatigue fracture often occurs in actual use,
Failure ratio is more serious.Therefore be badly in need of a kind of high tenacity of exploitation, the drilling rod of high intensity, it is desirable to impact flexibility reach (20 DEG C,
7.5x10mm) it is more than more than 64J, meets the failure criteria of " leaking before breaking ", so as to avoid drilling rod in deep-well, ultra-deep well operations
There is the situation of fatigue fracture.
The content of the invention
It is an object of the invention to provide a kind of high toughness petroleum drilling rod and its manufacture method, by reducing in steel grade
The consumption of the noble metals such as Cr, Mo, Ni, in the case where intensity is constant, substantially reduces production cost；By composition adjustment and rationally
Technology for Heating Processing, greatly improve the toughness of drilling rod, disclosure satisfy that deep-well, ultradeep well working condition demand.
The technical scheme is that：
A kind of high toughness petroleum drilling rod, the steel grades and mass percent of the drill pipe body, which are constituted, is：C：0.21%-
0.27%, Si：0.25%-0.40%, Mn：1.05%-1.25%, Cr：0.90%-1.15%, Mo：0.30%-0.50%,
Ni：≤ 0.1%, V：0.04%-0.10%, Cu：0-0.10%, S：≤ 0.005%, P：≤ 0.015%, surplus is Fe, unit
For mass percent.
Present invention also offers the manufacture method of above-mentioned high toughness petroleum drilling rod, comprise the steps：
(1) seamless steel pipe two ends are thickeied：1200-1300 DEG C will be heated within pipe end 500mm, using mechanical upsetting
It is thick to thicken two ends, drill pipe body is made；Mode of heating uses intermediate frequency heating；
(2) drill pipe body being made carries out bulk heat treatmet, and Technology for Heating Processing is quenching+high tempering；
(3) weld；
The steel grades and mass percent of the drill pipe body are constituted：C：0.21%-0.27%, Si：0.25%-
0.40%, Mn：1.05%-1.25%, Cr：0.90%-1.15%, Mo：0.30%-0.50%, Ni：≤ 0.1%, V：
0.04%-0.10%, Cu：0-0.10%, S：≤ 0.005%, P：≤ 0.015%, surplus is Fe, and unit is mass percent.
In step (2), quenching technical is：Quench furnace temperature be 850 DEG C -880 DEG C, be incubated 30-50 minutes, using 10 DEG C -
30 DEG C of water is quenched, and the cool time is no less than 28 seconds.
In step (2), tempering process is：Furnace temperature is 610 DEG C -630 DEG C, is incubated 60-90 minutes, naturally cools to
Room temperature.
Drill pipe body is welded with joint by way of friction welded weldering in step (3), forms drilling rod.
1st, the present invention is adjusted by the proportioning of Cr, Mn, Mo element, to improve the toughness and welding performance of drilling rod, not only real
Show low cost, high tenacity, and welding performance is greatly improved.
2nd, for the adjustment of drilling rod composition, Technology for Heating Processing reasonable in design passes through hardening heat, temperature, insulation
Time it is reasonably combined, enable drill pipe body it is overall it is full and uniform reach austenite, properties of product are stable, given full play to steel
The potentiality planted, are optimal the performance of drilling rod, decisive role are served to drilling rod performance.
Beneficial effects of the present invention：
Consumption of the invention by reducing the noble metal such as Cr, Mo, Ni in steel grade, in the case where intensity is constant, significantly
Reduce production cost；By composition adjustment and rational Technology for Heating Processing, greatly improve the toughness of drilling rod, disclosure satisfy that deep-well,
Ultradeep well working condition demand.
The drill pipe body yield strength of the present invention reaches between 950-1030MPa that tensile strength is more than 1050MPa, has no progeny
Elongation percentage is more than 18%, and v-notch ballistic work (- 20 DEG C, 7.5x10mm) is more than 90J；Drilling rod weld part yield strength reaches
Between 800-900MPa, tensile strength is more than 900MPa, and v-notch ballistic work (- 20 DEG C, 10x10mm) is more than 54J, drill pipe
Body performance is high, and impact flexibility is good, and the impact flexibility of drilling rod weld part is far beyond mill run performance, and anti-fatigue performance is excellent.
Embodiment
Technical scheme is further detailed with reference to specific embodiment.
Embodiment 1
The mass percent of the chemical composition of drill pipe body is constituted, C：0.23%, Si：0.27%, Mn：1.11%, Cr：
0.97%, Mo：0.40%, Ni：0.03%, V：0.06%, Cu：0.07%, S：0.002%, P：0.006%, surplus is Fe.Its
Manufacture method is carried out according to the following steps：
(1) seamless steel pipe two ends are thickeied：
1220 DEG C will be heated within one end 500mm of seamless steel pipe, mode of heating by the way of 3 intermediate frequency furnaces, plus
The other end is thickeied according to the same manner after the completion of thickness, drill pipe body is made.
(2) drill pipe body being made is subjected to integral quenching：
Drill pipe body is being warming up in 860 DEG C of step-by-step movement glowing furnace, insulation is come out of the stove after 35 minutes, outer drench is sprayed inside and is quenched
Quenched on lighter, the quenching liquid temperature of use is in 23 DEG C, 32 seconds cool times；
(3) it is tempered：
Drill pipe body is transported in the step-by-step movement tempering furnace for being warming up to 610 DEG C, is incubated 65 minutes, then drill pipe body is gone out
Stove, naturally cools to room temperature.
(4) friction welding；
By drill pipe body upset end turning to desired internal-and external diameter, combined with tool joint by way of friction welded weldering
Drilling rod is formed together.
Through above heat treatment step, the mechanical performance of drilling rod is as follows：
Drill pipe body yield strength reaches between 970MPa that tensile strength is more than 1070MPa, elongation after fracture 23%, V-type
Notch shock work((- 20 DEG C, 7.5x10mm) is 102J；
Drilling rod weld part yield strength reaches 850MPa, and tensile strength is more than 965MPa, v-notch ballistic work (- 20 DEG C,
10x10mm) it is 61J.
Embodiment 2
The mass percent of the chemical composition of drill pipe body is constituted, C：0.26%, Si：0.35%, Mn：1.18%, Cr：
1.15%, Mo：0.46%, Ni：0.03%, V：0.07%, Cu：0.06%, S：0.002%, P：0.010%, surplus is Fe.Its
Manufacture method is carried out according to the following steps：
(1) seamless steel pipe two ends are thickeied：
1280 DEG C will be heated within 1 end 500mm of seamless steel pipe, mode of heating is by the way of 3 intermediate frequency furnaces, 1 end
Another 1 end is thickeied according to the same manner after the completion of thickening, drill pipe body is made.
(2) drill pipe body being made is subjected to integral quenching：
Drill pipe body is being warming up in 880 DEG C of step-by-step movement glowing furnace, insulation is come out of the stove after 45 minutes, outer drench is sprayed inside and is quenched
Quenched on lighter, the quenching liquid temperature of use is in 18 DEG C, 30 seconds cool times；
(3) it is tempered：
Drill pipe body is transported in the step-by-step movement tempering furnace for being warming up to 630 DEG C, is incubated 85 minutes, then drill pipe body is gone out
Stove, naturally cools to room temperature.
(4) friction welding；
By drill pipe body upset end turning to desired internal-and external diameter, combined with tool joint by way of friction welded weldering
Drilling rod is formed together.
Through above heat treatment step, the mechanical performance of drilling rod is as follows：
Drill pipe body yield strength reaches between 1020MPa that tensile strength is more than 1110MPa, elongation after fracture 21%, V
Type notch shock work((- 20 DEG C, 7.5x10mm) is 96J；
Drilling rod weld part yield strength reaches 880MPa, and tensile strength is more than 975MPa, v-notch ballistic work (- 20 DEG C,
10x10mm) it is 58J.
Embodiment 3
The mass percent of the chemical composition of drill pipe body is constituted, C：0.25%, Si：0.30%, Mn：1.10%, Cr：
1.08%, Mo：0.42%, Ni：0.02%, V：0.06%, Cu：0.03%, S：0.003%, P：0.012%, surplus is Fe.Its
Manufacture method is carried out according to the following steps：
(1) seamless steel pipe two ends are thickeied：
1250 DEG C will be heated within 1 end 500mm of seamless steel pipe, mode of heating is by the way of 3 intermediate frequency furnaces, 1 end
Another 1 end is thickeied according to the same manner after the completion of thickening, drill pipe body is made.
(2) drill pipe body being made is subjected to integral quenching：
Drill pipe body is being warming up in 870 DEG C of step-by-step movement glowing furnace, insulation is come out of the stove after 40 minutes, outer drench is sprayed inside and is quenched
Quenched on lighter, the quenching liquid temperature of use is in 20 DEG C, 32 seconds cool times；
(3) it is tempered：
Drill pipe body is transported in the step-by-step movement tempering furnace for being warming up to 620 DEG C, is incubated 75 minutes, then drill pipe body is gone out
Stove, naturally cools to room temperature.
(4) friction welding；
By drill pipe body upset end turning to desired internal-and external diameter, combined with tool joint by way of friction welded weldering
Drilling rod is formed together.
Through above heat treatment step, the mechanical performance of drilling rod is as follows：
Drill pipe body yield strength reaches between 980MPa that tensile strength is more than 1090MPa, elongation after fracture 20%, V-type
Notch shock work((- 20 DEG C, 7.5x10mm) is 104J；
Drilling rod weld part yield strength reaches 840MPa, and tensile strength is more than 965MPa, v-notch ballistic work (- 20 DEG C,
10x10mm) it is 62J.
Embodiment 4
The mass percent of the chemical composition of drill pipe body is constituted, C：0.21%, Si：0.25%, Mn：1.05%, Cr：
1.00%, Mo：0.50%, Ni：0.06%, V：0.04%, Cu：0.10%, S：0.002%, P：0.006%, surplus is Fe.Its
Manufacture method is carried out according to the following steps：
(1) seamless steel pipe two ends are thickeied：
1200 DEG C will be heated within one end 500mm of seamless steel pipe, mode of heating by the way of 3 intermediate frequency furnaces, plus
The other end is thickeied according to the same manner after the completion of thickness, drill pipe body is made.
(2) drill pipe body being made is subjected to integral quenching：
Drill pipe body is being warming up in 850 DEG C of step-by-step movement glowing furnace, insulation is come out of the stove after 30 minutes, outer drench is sprayed inside and is quenched
Quenched on lighter, the quenching liquid temperature of use is in 10 DEG C, 31 seconds cool times；
(3) it is tempered：
Drill pipe body is transported in the step-by-step movement tempering furnace for being warming up to 615 DEG C, is incubated 60 minutes, then drill pipe body is gone out
Stove, naturally cools to room temperature.
(4) friction welding；
By drill pipe body upset end turning to desired internal-and external diameter, combined with tool joint by way of friction welded weldering
Drilling rod is formed together.
Through above heat treatment step, the mechanical performance of drilling rod is as follows：
Drill pipe body yield strength reaches between 970MPa that tensile strength is more than 1070MPa, elongation after fracture 23%, V-type
Notch shock work((- 20 DEG C, 7.5x10mm) is 100J；
Drilling rod weld part yield strength reaches 850MPa, and tensile strength is more than 965MPa, v-notch ballistic work (- 20 DEG C,
10x10mm) it is 61J.
Embodiment 5
The mass percent of the chemical composition of drill pipe body is constituted, C：0.27%, Si：0.40%, Mn：1.25%, Cr：
0.90%, Mo：0.30%, Ni：0.10%, V：0.10%, Cu：0.02%, S：0.003%, P：0.005%, surplus is Fe.Its
Manufacture method is carried out according to the following steps：
(1) seamless steel pipe two ends are thickeied：
1300 DEG C will be heated within one end 500mm of seamless steel pipe, mode of heating by the way of 3 intermediate frequency furnaces, plus
The other end is thickeied according to the same manner after the completion of thickness, drill pipe body is made.
(2) drill pipe body being made is subjected to integral quenching：
Drill pipe body is being warming up in 860 DEG C of step-by-step movement glowing furnace, insulation is come out of the stove after 50 minutes, outer drench is sprayed inside and is quenched
Quenched on lighter, the quenching liquid temperature of use is in 30 DEG C, 33 seconds cool times；
(3) it is tempered：
Drill pipe body is transported in the step-by-step movement tempering furnace for being warming up to 625 DEG C, is incubated 90 minutes, then drill pipe body is gone out
Stove, naturally cools to room temperature.
(4) friction welding；
By drill pipe body upset end turning to desired internal-and external diameter, combined with tool joint by way of friction welded weldering
Drilling rod is formed together.
Through above heat treatment step, the mechanical performance of drilling rod is as follows：
Drill pipe body yield strength reaches between 970MPa that tensile strength is more than 1070MPa, elongation after fracture 23%, V-type
Notch shock work((- 20 DEG C, 7.5x10mm) is 101J；
Drilling rod weld part yield strength reaches 850MPa, and tensile strength is more than 965MPa, v-notch ballistic work (- 20 DEG C,
10x10mm) it is 60J.
Claims (5)
1. a kind of high toughness petroleum drilling rod, it is characterised in that：The steel grades and mass percent of the drill pipe body are constituted：C：
0.21%-0.27%, Si：0.25%-0.40%, Mn：1.05%-1.25%, Cr：0.90%-1.15%, Mo：0.30%-
0.50%, Ni：≤ 0.1%, V：0.04%-0.10%, Cu：0-0.10%, S：≤ 0.005%, P：≤ 0.015%, surplus is
Fe, unit is mass percent.
2. a kind of manufacture method of high toughness petroleum drilling rod, it is characterised in that comprise the steps：
(1) seamless steel pipe two ends are thickeied：1200-1300 DEG C will be heated within pipe end 500mm, be added using mechanical jumping-up
Thick two ends, are made drill pipe body；Mode of heating uses intermediate frequency heating；
(2) drill pipe body being made carries out bulk heat treatmet, and Technology for Heating Processing is quenching+high tempering；
(3) weld；
The mass percent of the steel grades of the drill pipe body is constituted：C：0.21%-0.27%, Si：0.25%-0.40%,
Mn：1.05%-1.25%, Cr：0.90%-1.15%, Mo：0.30%-0.50%, Ni：≤ 0.1%, V：0.04%-
0.10%, Cu：0-0.10%, S：≤ 0.005%, P：≤ 0.015%, surplus is Fe, and unit is mass percent.
3. the manufacture method of a kind of high toughness petroleum drilling rod according to claim 2, it is characterised in that in step (2), quench
Ignition technique is：It is 850 DEG C -880 DEG C to quench furnace temperature, is incubated 30-50 minutes, is quenched using 10 DEG C -30 DEG C of water, is quenched
Time is no less than 28 seconds.
4. the manufacture method of a kind of high toughness petroleum drilling rod according to claim 2, it is characterised in that in step (2), is returned
Ignition technique is：Furnace temperature is 610 DEG C -630 DEG C, is incubated 60-90 minutes, naturally cools to room temperature.
5. a kind of manufacture method of high toughness petroleum drilling rod according to claim 2, it is characterised in that drilling rod in step (3)
Body is welded with joint by way of friction welded weldering, forms drilling rod.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899004A (en) * | 2019-03-12 | 2019-06-18 | 淮北林光钻探机电工程有限公司 | A kind of exploration casing and its manufacturing method |
| CN109972038A (en) * | 2019-04-01 | 2019-07-05 | 宝钢特钢韶关有限公司 | A kind of ultradeep well tool joint steel and its manufacturing method |
| CN110484818A (en) * | 2019-09-03 | 2019-11-22 | 山东钢铁股份有限公司 | A kind of petroleum rubber core of lubricator supporter steel and its production method |
| CN112226694A (en) * | 2020-10-12 | 2021-01-15 | 江阴雷特斯钻具有限公司 | Trenchless drill rod and heat treatment process thereof |
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| CN109972038A (en) * | 2019-04-01 | 2019-07-05 | 宝钢特钢韶关有限公司 | A kind of ultradeep well tool joint steel and its manufacturing method |
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Application publication date: 20170912 |