CN101182757A - Sidetracking petroleum case pipe for petroleum natural gas mining industry and production process thereof - Google Patents
Sidetracking petroleum case pipe for petroleum natural gas mining industry and production process thereof Download PDFInfo
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Abstract
The present invention provides a sidetracking petroleum bushing for the petroleum and natural gas mining industry. The chemical ingredients of the petroleum bushing include: C equal to 0.23-0.40, Si equal to 0.15-0.50, Mn equal to 0.60-1.60, P less than or equal to 0.25, S less than or equal to 0.15, Cr equal to 0.40-1.60, Mo equal to 0.10-0.40, Cu less than or equal to 0.30 and the rest is Fe. The present invention also provides a production method of the sidetracking petroleum bushing for the petroleum and natural gas mining industry. The method includes the following steps: steel-making materials: steel making, a cooled continuous casting blank in an annular heat furnace of furnace with the temperature of 1,250 DEG C to 1,290 DEG C, the thermosetting temperature of 1,200 DEG C to 1,220 DEG C and the thermoboring temperature of 1,220 DEG C to 1,250 DEG C, tandem rolling, metering, cooling, sawing, straightening and detecting; thermal treatment and final detecting; joint thread processing. The effect of the present invention is that the sidetracking petroleum bushing produced by the method can ensure that the bushing can enter the well smoothly and leave enough space for installing a pumping rod and a defueling pump in the consequent oil extraction, thus rapidly recovering the normal oil and gas exploitation and further greatly reducing the drilling cost.
Description
Technical field
The present invention relates to a kind of petroleum casing pipe production method, particularly a kind of sidetracking petroleum case pipe for petroleum natural gas mining industry and production method thereof.
Background technology
All have a large amount of oil, the production string in the natural gas well to be damaged every year both at home and abroad, causes the oil gas well can't ordinary production, must beat new well, thereby cause bigger economic loss.Some old wells are long owing to the oil recovery time, damages such as production string demutation corrosion, can't continue oil producing operation, meanwhile, the oil production of old well significantly reduces, and the expense of beating new well in the original place will be difficult to regain, and come the sidetracking oil reservoir will reduce drilling cost at double by the protective casing that utilizes former well, to be easy to reclaim drilling cost by recovering the oil, so not only to have increased the recovery ratio of crude oil but also increased the economic benefit in oil field.
Summary of the invention
For solving the problem that exists in the above-mentioned technology, the objective of the invention is physical dimension, joint form and the industrial sidetracking of a kind of oil and gas exploitation of performance indications design high strength petroleum sleeve pipe and production method thereof from sleeve pipe, need carry out sidetracking to recover the actual needs of normal exploitation as early as possible to satisfy a large amount of oil gas wells that can't continue ordinary 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 provides a kind of sidetracking petroleum case pipe for petroleum natural gas mining industry, and wherein: the chemical analysis of this petroleum casing pipe and weight % are: C=0.23 ~ 0.40 Si=0.15 ~ 0.50 Mn=0.60 ~ 1.60 P≤0.25 S≤0.15Cr=0.40 ~ 1.60 Mo=0.10 ~ 0.40 Cu≤0.30 surplus is Fe;
The external diameter 3-3/4 inch of this petroleum casing pipe, wall thickness is 5.0-10.0mm; The joint form of described petroleum casing pipe is the 3-1/2 inch external upset tubing joint among the API 5B, this laced belt box cupling, pitch is per inch 8 teeth, the pitch diameter of thread is 3.66395 inches, the male end full stand of thread is 2.375 inches, the full top of male end reach is 1.375 inches, and is unobstructed smoothly when going into well for the ease of this sleeve pipe, and the external diameter of box cupling is 110mm.
A kind of production method of described sidetracking petroleum case pipe for petroleum natural gas mining industry also is provided, and this method may further comprise the steps:
1. steelmaking feed: adopt molten iron, steel scrap and sponge iron to do steelmaking feed; 2. steel-making: with electric arc furnaces steelmaking feed is fused into molten steel, after external refining and vacuum outgas, obtains chemical analysis as mentioned above, continuous casting becomes the circle base; 3. cooled continuous casting billet is heated in rotary heating furnace, furnace temperature is 1250～1290 ℃, and heat centering temperature is 1200～1220 ℃, and hot piercing temperature is 1220～1250 ℃, tandem rolling, sizing, cooling, sawing, aligning, flaw detection; 4. heat treatment: in temperature is the shrend quenching of 850～950 ℃ of quenchings, is 550～650 ℃ of tempering in temperature; In temperature is 500～600 ℃ of hot sizes, is 450 ℃～550 ℃ thermal straightenings in temperature, at last flaw detection; 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: vertical full-scale Charpy-V impact power 〉=50J
Horizontal full-scale Charpy-V impact power 〉=35J;
5. joint screw thread processing: the body that will meet above-mentioned requirements, on the numerical control machine for threading, be processed into screw thread, comprise box cupling screw thread and pipe thread, the major parameter of screw thread is the 3-1/2 inch external upset tubing joint among the API 5B, this laced belt box cupling, pitch is per inch 8 teeth, the pitch diameter of thread is 3.66395 inches, and the male end full stand of thread is 2.375 inches, and the full top of male end reach is 1.375 inches, unobstructed smoothly when going into well for the ease of this sleeve pipe, the external diameter of box cupling is 110mm.Guarantee the length of male end effective thread by the physical dimension of control body, the phosphate coating thickness of reasonably optimizing thread parameter and strict control box cupling screw thread reaches starting buckle and the black skin buckle burr by a reconditioning male and female end screw thread, guarantee the good seal performance that is threaded, the whole functional performance of sleeve pipe:
Body collapse resistance: 〉=58Mpa
Strength of joint: 〉=736KN
Yield strength: 〉=76Mpa in the body.
Effect of the present invention is the sidetracking sleeve pipe that adopts this method to produce, and its external diameter is less than 4-1/2 inch small casing, and greater than 3-1/2 inch external upset tubing, 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 just can guarantee this sidetracking sleeve pipe goes into well smoothly, gives again in the follow-up oil producing operation sucker rod to be installed and oil well pump stays enough spaces.By utilizing the sidetracking sleeve pipe, in the bottom of unspoiled protective casing, get out new well from the side direction of former oil reservoir sleeve pipe, the sidetracking sleeve pipe is lowered to oil-gas Layer, just can recover normal oil-gas mining, thereby reduce drilling cost greatly.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 guarantees the intensity and the toughness of sleeve pipe through modifier treatment after being rolled into seamless pipe.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 oil reservoir sleeve pipe, the sidetracking sleeve pipe is lowered to oil-gas Layer, just can recover normal oil-gas mining, thereby reduce drilling cost greatly.
The specific embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated sidetracking petroleum case pipe for petroleum natural gas mining industry of the present invention and production method thereof.
Sidetracking petroleum case pipe for petroleum natural gas mining industry of the present invention, the chemical analysis of this petroleum casing pipe and weight % are: C=0.23 ~ 0.40 Si=0.15 ~ 0.50 Mn=0.60 ~ 1.60 P≤0.25 S≤0.15 Cr=0.40 ~ 1.60 Mo=0.10 ~ 0.40 Cu≤0.30 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: the body that will meet above-mentioned requirements, on the numerical control machine for threading, be 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 among the API 5B, this laced belt box cupling, pitch are per inch 8 teeth, and the pitch diameter of thread is 3.66395 inches, the male end full stand of thread is 2.375 inches, and the full top of male end reach is 1.375 inches.Unobstructed smoothly when going into well for the ease of this sleeve pipe, the external diameter of box cupling is 110mm.Guarantee the length of male end effective thread by the physical dimension of control body, the phosphate coating thickness of reasonably optimizing thread parameter and strict control box cupling screw thread reaches starting buckle and the black skin buckle burr by a reconditioning male and female end screw thread, guarantees the good seal performance that is threaded.
The production method of sidetracking petroleum case pipe for petroleum natural gas mining industry of the present invention, this method may further comprise the steps:
1. steelmaking feed: adopt molten iron, steel scrap and sponge iron to do steelmaking feed; 2. steel-making: with electric arc furnaces steelmaking feed is fused into molten steel, after external refining and vacuum outgas, obtains chemical analysis as mentioned above, continuous casting becomes the circle base; 3. cooled continuous casting billet is heated in rotary heating furnace, furnace temperature is 1250～1290 ℃, and heat centering temperature is 1200～1220 ℃, and hot piercing temperature is 1220～1250 ℃, tandem rolling, sizing, cooling, sawing, aligning, flaw detection; 4. heat treatment: in temperature is the shrend quenching of 850～950 ℃ of quenchings, is 550～650 ℃ of tempering in temperature; In temperature is 500～600 ℃ of hot sizes, is 450 ℃～550 ℃ thermal straightenings in temperature, at last flaw detection.After thermal straightening, make the level that deformation ability reaches high collapse-resistance casing of squeezing that resists of described sleeve pipe outward.
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: vertical full-scale Charpy-V impact power 〉=50J
Horizontal full-scale Charpy-V impact power 〉=35J;
5. joint screw thread processing: the body that will meet above-mentioned requirements, on the numerical control machine for threading, be 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 among the API 5B, this laced belt box cupling, pitch are per inch 8 teeth, and the pitch diameter of thread is 3.66395 inches, the male end full stand of thread is 2.375 inches, and the full top of male end reach is 1.375 inches.Unobstructed smoothly when going into well for the ease of this sleeve pipe, the external diameter of box cupling is 110mm.Guarantee the length of male end effective thread by the physical dimension of control body, the phosphate coating thickness of reasonably optimizing thread parameter and strict control box cupling screw thread reaches starting buckle and the black skin buckle burr by a reconditioning male and female end screw thread, guarantees the good seal performance that is threaded.With φ 95.25 * 5.51mm TP110V is example, and the whole functional performance of sleeve pipe satisfies following the requirement:
Body collapse resistance: 〉=58Mpa
Strength of joint: 〉=736KN
Yield strength: 〉=76Mpa in the body.
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 through the intensity and the toughness of modifier treatment (quenching+tempering) assurance sleeve pipe, 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: vertical full-scale Charpy-V impact power is not less than 50J, and horizontal 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 weight % are: C=0.23 ~ 0.40 Si=0.15 ~ 0.50Mn=0.60 ~ 1.60 P≤0.25 S≤0.15 Cr=0.40 ~ 1.60 Mo=0.10 ~ 0.40 Cu≤0.30 surplus is Fe.
The physical dimension of described sleeve pipe: external diameter 3-3/4 inch (95.25mm), wall thickness are 5.0-10.0mm.
The joint screw thread processing of described sleeve pipe: the body that will meet above-mentioned requirements, on the numerical control machine for threading, be 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 among the API 5B, this laced belt box cupling, pitch are per inch 8 teeth, and the pitch diameter of thread is 3.66395 inches, the male end full stand of thread is 2.375 inches, and the full top of male end reach is 1.375 inches.Unobstructed smoothly when going into well for the ease of this sleeve pipe, the external diameter of box cupling is 110mm.Guarantee the length of male end effective thread by the physical dimension of control body, the phosphate coating thickness of reasonably optimizing thread parameter and strict control box cupling screw thread reaches starting buckle and the black skin buckle burr by a reconditioning male and female end screw thread, guarantees 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) among the API 5B.
The production method 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 as mentioned above, continuous casting becomes the circle base, and cooled continuous casting billet is heated in rotary heating furnace, furnace temperature is 1250～1290 ℃, and heat centering temperature is 1200～1220 ℃, and hot piercing temperature is 1220～1250 ℃, tandem rolling, sizing, cooling, sawing, aligning, flaw detection; Heat treatment: in temperature is that 850～950 ℃ shrend is quenched, and is 550～650 ℃ of tempering in temperature; In temperature is 500～600 ℃ of hot sizes, is 450 ℃～550 ℃ thermal straightenings in temperature, at last flaw detection.
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: vertical full-scale Charpy-V impact power 〉=50J
Horizontal full-scale Charpy-V impact power 〉=35J.
Joint screw thread processing: the body that will meet above-mentioned requirements, on the numerical control machine for threading, be 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 among the API 5B, this laced belt box cupling, pitch are per inch 8 teeth, and the pitch diameter of thread is 3.66395 inches, the male end full stand of thread is 2.375 inches, and the full top of male end reach is 1.375 inches.Unobstructed smoothly when going into well for the ease of this sleeve pipe, the external diameter of box cupling is 110mm.Guarantee the length of male end effective thread by the physical dimension of control body, the phosphate coating thickness of reasonably optimizing thread parameter and strict control box cupling screw thread reaches starting buckle and the black skin buckle burr by a reconditioning male and female end screw thread, guarantees the good seal performance that is threaded.
Sleeve pipe overall performance (is example with φ 95.25 * 5.512mm TP110V)
Body collapse resistance: 〉=58Mpa
Strength of joint: 〉=736KN
Yield strength: 〉=76Mpa in the body.
Embodiment:
The petroleum casing pipe of producing by described composition and method with TP110V (φ 95.25 * 5.512mm) is an example, and its chemical composition and working process parameter are as follows:
The chemical analysis of described sleeve pipe and weight % are: C 0.26%, and Si 0.18%, and Mn 1.05%, and Cr 0.98%, and Mo 0.18%, and Ni 0.07%, and Cu 0.11%, and P 0.014%, S0.010%, and 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 as mentioned above, continuous casting becomes the circle base, and cooled continuous casting billet is heated in rotary heating furnace, furnace temperature is 1285 ℃, and heat centering temperature is 1210 ℃, and hot piercing temperature is 1230 ℃, tandem rolling, sizing, cooling, sawing, aligning, flaw detection; Heat treatment: in temperature is that 910 ℃ shrend is quenched, and is 630 ℃ of tempering in temperature; In temperature is 600 ℃ of hot sizes, and temperature is 530 ℃ of thermal straightenings, at last flaw detection.
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) 910Mpa elongation per unit length 24.0%.
The body that will meet above-mentioned requirements, on the numerical control machine for threading, be 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 among the API 5B, this laced belt box cupling, pitch are per inch 8 teeth, and the pitch diameter of thread is 3.66395 inches, the male end full stand of thread is 2.375 inches, and the full top of male end reach is 1.375 inches.Unobstructed smoothly when going into well for the ease of this sleeve pipe, the external diameter of box cupling is 110mm.Guarantee the length of male end effective thread by the physical dimension of control body, the phosphate coating thickness of reasonably optimizing thread parameter and strict control box cupling screw thread reaches starting buckle and the black skin buckle burr by a reconditioning male and female end screw thread, guarantees the good seal performance that is threaded.The index that the whole functional performance of sleeve pipe reaches is as follows:
Body collapse resistance: yield strength: 85Mpa in 65Mpa slippage strength: the 812KN
Described sleeve pipe is successfully gone into the well 15 mouthfuls, and the part well has begun to recover the oil, and result of use is fine.
Claims (2)
1. sidetracking petroleum case pipe for petroleum natural gas mining industry, it is characterized in that: the chemical analysis of this petroleum casing pipe and weight % are: C=0.23 ~ 0.40 Si=0.15 ~ 0.50 Mn=0.60 ~ 1.60 P≤0.25 S≤0.15 Cr=0.40 ~ 1.60 Mo=0.10 ~ 0.40 Cu≤0.30 surplus is Fe;
The external diameter 3-3/4 inch of this petroleum casing pipe, wall thickness is 5.0-10.0mm; The joint form of described petroleum casing pipe is the 3-1/2 inch external upset tubing joint among the API 5B, this laced belt box cupling, pitch is per inch 8 teeth, the pitch diameter of thread is 3.66395 inches, the male end full stand of thread is 2.375 inches, the full top of male end reach is 1.375 inches, and is unobstructed smoothly when going into well for the ease of this sleeve pipe, and the external diameter of described box cupling is 110mm.
2. the production method of a described sidetracking petroleum case pipe for petroleum natural gas mining industry, this method may further comprise the steps;
1. steelmaking feed: adopt molten iron, steel scrap and sponge iron to do steelmaking feed;
2. steel-making: with electric arc furnaces steelmaking feed is fused into molten steel, after external refining and vacuum outgas, obtains chemical analysis as mentioned above, continuous casting becomes the circle base;
3. cooled continuous casting billet is heated in rotary heating furnace, furnace temperature is 1250～1290 ℃, and heat centering temperature is 1200～1220 ℃, and hot piercing temperature is 1220～1250 ℃, tandem rolling, sizing, cooling, sawing, aligning, flaw detection;
4. heat treatment: in temperature is that 850～950 ℃ shrend is quenched, and is 550～650 ℃ of tempering in temperature; In temperature is 500～600 ℃ of hot sizes, is 450 ℃～550 ℃ thermal straightenings in temperature, at last flaw detection;
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: vertical full-scale Charpy-V impact power 〉=50J
Horizontal full-scale Charpy-V impact power 〉=35J;
5. joint screw thread processing: the body that will meet above-mentioned requirements is processed into screw thread on the numerical control machine for threading, comprise box cupling screw thread and pipe thread, the major parameter of screw thread is the 3-1/2 inch external upset tubing joint among the API 5B, this laced belt box cupling, pitch are per inch 8 teeth, and the pitch diameter of thread is 3.66395 inches, the male end full stand of thread is 2.375 inches, the full top of male end reach is 1.375 inches, and is unobstructed smoothly when going into well for the ease of this sleeve pipe, and the external diameter of described box cupling is 110mm;
The whole functional performance of this sleeve pipe satisfies following the requirement:
Body collapse resistance: 〉=58Mpa
Strength of joint: 〉=736KN
Yield strength: 〉=76Mpa in the body.
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| CN114622143A (en) * | 2022-02-10 | 2022-06-14 | 天津钢管制造有限公司 | 140-155ksi oil and gas exploitation casing pipe and production method thereof |
| CN115449695A (en) * | 2022-08-22 | 2022-12-09 | 包头钢铁（集团）有限责任公司 | Production method of 1000 MPa-grade high-strength sucker rod round steel |
| CN115449695B (en) * | 2022-08-22 | 2023-09-26 | 包头钢铁（集团）有限责任公司 | Production method of 1000 MPa-level high-strength round sucker rod steel |
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| CN101182757B (en) | 2011-08-31 |
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