CN107420049A - A kind of full titanium alloy drilling rod of friction welding type - Google Patents
A kind of full titanium alloy drilling rod of friction welding type Download PDFInfo
- Publication number
- CN107420049A CN107420049A CN201710818069.9A CN201710818069A CN107420049A CN 107420049 A CN107420049 A CN 107420049A CN 201710818069 A CN201710818069 A CN 201710818069A CN 107420049 A CN107420049 A CN 107420049A
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- China
- Prior art keywords
- titanium alloy
- friction
- drilling rod
- rod
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 61
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 60
- 238000005493 welding type Methods 0.000 title claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000003032 molecular docking Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a kind of full titanium alloy drilling rod of friction welding type, belongs to drill pipe art, including the body of rod prepared using titanium alloy, in addition to the joint prepared using titanium alloy, is welded between the body of rod and joint using friction welding method.It is contemplated that reducing drilling rod overall weight, avoid tool joint from producing displacement and bending stress with drilling rod body linkage section, improve connective stability, reduce stress concentration, lift the fatigue life of drilling rod.
Description
Technical field
The invention belongs to drill pipe art, is to be related to a kind of full titanium alloy drilling rod of friction welding type more specifically.
Background technology
With modern petroleum industrial expansion, oil/gas drilling proposes higher and higher requirement to drilling technology, particularly
The drilling well of some special process, some conventional drilling tool, equipment can not meet the requirement of drilling well.It is special to meet both at home and abroad
The drilling well requirement of different process well, develops a series of drilling tool and equipment, wherein titanium alloy drilling rod is exactly to develop in recent years
The new varieties got up.Titanium alloy drilling rod with the steel drill rod of routine compared to having bigger flexibility, with structural stress it is small,
The characteristics of endurance, corrosion-resistant and light weight, in high corrosion well, super short radial horizontal well, have in deep-well, ultra-deep well drilling application
Good adaptability.
External titanium alloy drilling rod uses conventional steel tool joint material, and the connection of drilling rod body and tool joint is to use
The mode of cold setting connects.Because drilling rod body is titanium alloy, and titanium alloy tool joint is using steel alloy, titanium alloy with
The difference of the modulus of elasticity of steel alloy can cause tool joint to produce relative displacement with drilling rod body linkage section, in this can
Great bending stress is produced, so as to cause tool joint and the fatigue life of drilling rod body junction to be greatly reduced.
The content of the invention
It is an object of the invention to provide a kind of full titanium alloy drilling rod of friction welding type, it is intended to drilling rod overall weight is reduced,
Avoid tool joint from producing displacement and bending stress with drilling rod body linkage section, improve connective stability, reduce stress concentration, carry
Rise the fatigue life of drilling rod.
In order to solve the above technical problems, the technical solution used in the present invention is：
A kind of full titanium alloy drilling rod of friction welding type, including the body of rod prepared using titanium alloy, in addition to prepared using titanium alloy
Joint, between the body of rod and joint using friction welding method weld.
Preferably, the friction welding method is 1), pre-welding treatment；2), initial friction；3), secondary friction；4), push up
Section processing.
Preferably, the pre-welding treatment, including the connection end to the connecting end surface of the body of rod of drilling rod and the joint of drilling rod
Face is machined, and carries out bevel processing, then by the connecting end surface of the body of rod and the connecting end surface of the joint
Docking.
Preferably, the groove is the single bevel groove with root face, and it is opened on the joint connecting end surface, institute
It is 1~2mm to state root face, and the angle of the groove is 30 °~45 °.
Preferably, the initial friction, including initial friction pressure is set as 45~50 kN, the initial friction time is
1.5~2 s, initial friction rotating speed are 530~560 rpm.
Preferably, the secondary friction, including secondary friction pressure is set as 100~110 kN, secondary fraction time
It is set as 18~20 s, secondary friction rotating speed 530~560 rpm.
Preferably, the top section processing, including upsetting force is set as 430~450kN, upset time is 16~18s.
It is using beneficial effect caused by above-mentioned technical proposal：With the steel joint and the titanium alloy body of rod of prior art
The drilling rod produced by cold working mode is compared, and the present invention passes through friction welding (FW) using the body of rod and joint that are titanium alloy material
The method of connecing is welded, successively by pre-welding treatment, initial friction, it is secondary friction and top section processing etc. step, this titanium alloy
Drilling rod is full titanium alloy, compared to the drilling rod that conventional steel joint adds the titanium alloy body of rod, titanium alloy tool joint corrosion resistance is strong,
Good toughness, nonmagnetic, fatigue life is long and density is small, mitigates drilling rod overall weight；Drilling rod is changed using friction-welding technique
The connected mode of joint and the body of rod, cold setting mode, friction welding can only be used compared to conventional steel joint and the titanium alloy body of rod
The body of rod and joint connective stability can be lifted, reduces junction stress concentration, titanium alloy drilling rod fatigue life is lifted, passes through essence
True state modulator, Quick Oxidation under titanium alloy high-temperature is effectively prevented, intensity that joint is connected with the body of rod and stably is significantly increased
Property, ensure that the full titanium alloy drilling rod overall performance of friction welding type is excellent.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the invention；
Fig. 2 is the structural representation of the groove of the body of rod and joint in Fig. 1；
Each figure number is entitled：The welding position of 1-joint, 2-body of rod and joint, 3-body of rod, a-bevel angle, B-root face.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with the accompanying drawings and embodiment pair
The present invention is described in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and
It is not used in the restriction present invention.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", " on ", " under ", "front", "rear", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " top ", " bottom " " interior ", " outer " are to be closed based on orientation shown in the drawings or position
System, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
Refer to shown in Fig. 1, the present invention includes the body of rod 3 prepared using titanium alloy, in addition to prepared using titanium alloy
Joint 1, welded between the body of rod 3 and joint 1 using friction welding method.
The drilling rod of above-mentioned design, its joint 1 also use identical titanium alloy material, can not only reduce the single heavy of drilling rod
Amount, and the difference of titanium alloy and alloyed steel elastic modulus can be avoided to cause tool joint 1 to be produced with the linkage section of drill rod body 3
Relative displacement, so as to avoid that great bending stress can be produced in this, so as to which tool joint 1 and drilling rod bar be substantially improved
The fatigue life of the junction of body 3, titanium alloy tool joint corrosion resistance is strong, good toughness, nonmagnetic and density are small.
Specifically, the outside dimension at the middle part of the above-mentioned body of rod 3 is 73mm, wall thickness 9.17mm, the body of rod 3 docks with joint
At both ends, the external diameter of the body of rod 3 transits to 76.2mm, and wall thickness increases to 19.05mm；It is corresponding, the outside dimension of the connection end of joint 1
For 76.2mm, internal diameter size 38.1mm.
Further, as a kind of a kind of specific embodiment party of the full titanium alloy drilling rod of friction welding type provided by the invention
Formula, the friction welding method are 1), pre-welding treatment；2), initial friction；3), secondary friction；4) section processing, is pushed up.
Specifically, as a kind of a kind of embodiment of the full titanium alloy drilling rod of friction welding type provided by the invention,
The pre-welding treatment, including the connecting end surface of the connecting end surface of the body of rod 3 of drilling rod and the joint 1 of drilling rod is machined,
And bevel processing is carried out, then the connecting end surface of the body of rod 3 is docked with the connecting end surface of the joint 1；The groove
For the single bevel groove with root face, and it is opened on the connecting end surface of joint 1, the root face B is 1~2mm, the groove
Angle a be 30 °~45 °.
To ensure that the drill pipe friction of titanium alloy connects quality, need the end of the body of rod 3 and joint 1 welding footpath position before welding and
Row machining, ensure that solder side inside/outside diameter size is identical, can completely attach to during welding, the solder side of the body of rod 3 is in plane
State, the welding end surface of joint 1 take the form of inclined plane state（As shown in Figure 2）, above-mentioned groove design, can be realized in friction welding process
The end face of the body of rod 3 and the solder side of joint 1 come into contact with, and realize progressively heating fusion, ensure the distribution of welding position metal streamline
Uniformly, the weld strength of the joint 1 of drilling rod and the junction of the body of rod 3 of drilling rod is lifted.
Specifically, as a kind of a kind of embodiment of the full titanium alloy drilling rod of friction welding type provided by the invention,
The initial friction, including set initial friction pressure as 45~50 kN, initial friction time are 1.5~2 s, initial friction
Rotating speed is 530~560 rpm；
In the initial friction stage, as friction pressure increases to initial friction pressure value, the titanium alloy surface for welding contact is rubbed
Destroy, the body of rod 3 and the clean metal of joint 1 contact with each other, and burnoff length gradually increases, frictional contact surface surface temperature also with
Rise, titanium alloy intensity is declined slightly, and plasticity and toughness step up, and these factors promote coefficient of friction to increase, and friction adds
Hot merit improves rapidly, and as contact surface temperature height is to 1100~1200 DEG C, the speed of mainshaft and heating power reach stationary value, this
Individual stage titanium alloy surface had both be combined with each other under high-temp plastic state, and was cut by the rotary torsion square of main shaft, and mutually oozed
Thoroughly, contact good plasticity titanium alloy and be full of rubbing surface, be allowed to completely isolated with air, prevent the quick oxygen of titanium alloy rubbing surface
Change.
Specifically, as a kind of a kind of embodiment of the full titanium alloy drilling rod of friction welding type provided by the invention,
The secondary friction, including set secondary friction pressure as 100~110 kN, secondary fraction time are set as 18~20 s, two
Secondary friction rotating speed 530~560 rpm.
Secondary friction phase is the Main Stage of titanium alloy friction heating process, and this stage frictional surface temperature is kept for 1200 DEG C
Left and right, the bonding phenomenon of titanium alloy material are reduced, and the enhancing of molecular action phenomenon, rubbing surface starts to deform, in the axle of friction torque
Under being acted on to pressure, wrought titanium alloy layer is extruded into overlap from friction surface and constantly increased.
Specifically, as a kind of a kind of embodiment of the full titanium alloy drilling rod of friction welding type provided by the invention,
The top section processing, including upsetting force is set as 430~450kN, upset time is 16~18s.
Upset processing stage main shaft quickly stops the rotation, and upset force rises to upsetting force value, while the titanium of high temperature deformation
Alloy is largely extruded, and overlap quickly increases, and is obtained predetermined deflection by accurate control time and upset force, is made contact surface
Oxidative tissue, impurity extruded completely, to ensure to obtain good welding quality.
The above method, tool joint 1 and the connected mode of the body of rod 3 are changed using friction-welding technique, by accurately joining
Numerical control system, Quick Oxidation under titanium alloy high-temperature is effectively prevented, the strength and stability that joint 1 is connected with the body of rod 3 is significantly increased, protected
The card full titanium alloy drilling rod overall performance of friction welding type is excellent, and friction welding can lift the stabilization that the body of rod 3 is connected with joint 1
Property, reduce junction stress concentration, lift titanium alloy drilling rod fatigue life.
Further, as a kind of a kind of specific embodiment party of the full titanium alloy drilling rod of friction welding type provided by the invention
Formula, it is 6~7mm to control friction amount of contraction.
Above-mentioned design, welding zone heat affected area width in titanium alloy mill welding process, effectively lifting weldering can be effectively controlled
Area's mechanical performance..
Further, as a kind of complete a kind of embodiment of titanium alloy drilling rod of friction welding type provided by the invention,
It is 8~16mm to control welding contracted quantity.
Above-mentioned design, the welding gross shrinkage of whole friction welding process is controlled, oxidative tissue, the oil of contact surface can be made
Dirty, dust is extruded completely, to ensure to obtain good welding quality..
Specific case used herein is set forth to the principle and embodiment of the present invention, and above example is said
It is bright to be only intended to help the method and its core concept for understanding the present invention.It should be pointed out that the ordinary skill for the art
For personnel, under the premise without departing from the principles of the invention, some improvement and modification, these improvement can also be carried out to the present invention
Also fallen into modification in the protection domain of the claims in the present invention.
Claims (7)
1. a kind of full titanium alloy drilling rod of friction welding type, including the body of rod prepared using titanium alloy（3）, it is characterised in that：Also wrap
Include the joint prepared using titanium alloy（1）, the body of rod（3）With joint（1）Between using friction welding method weld.
A kind of 2. full titanium alloy drilling rod of friction welding type according to claim 1, it is characterised in that：The friction welding side
Method is 1), pre-welding treatment；2), initial friction；3), secondary friction；4) section processing, is pushed up.
A kind of 3. full titanium alloy drilling rod of friction welding type according to claim 2, it is characterised in that：The pre-welding treatment,
Including the body of rod to drilling rod（3）Connecting end surface and drilling rod joint（1）Connecting end surface be machined, and carry out out slope
Mouth processing, then by the body of rod（3）Connecting end surface and the joint（1）Connecting end surface docking.
A kind of 4. full titanium alloy drilling rod of friction welding type according to claim 3, it is characterised in that：The groove is with blunt
The single bevel groove on side, and it is opened in the joint（1）On connecting end surface, the root face is 1~2mm, the angle of the groove
For 30 °~45 °.
A kind of 5. full titanium alloy drilling rod of friction welding type according to claim 2, it is characterised in that：The initial friction,
Including setting initial friction pressure as 45~50 kN, the initial friction time is 1.5~2 s, and initial friction rotating speed is 530~560
rpm。
A kind of 6. full titanium alloy drilling rod of friction welding type according to claim 2, it is characterised in that：The secondary friction,
Including setting secondary friction pressure as 100~110 kN, secondary fraction time is set as 18~20 s, secondary friction rotating speed 530
~560 rpm.
A kind of 7. full titanium alloy drilling rod of friction welding type according to claim 2, it is characterised in that：The top section processing,
Including setting upsetting force as 430~450kN, upset time is 16~18s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710818069.9A CN107420049A (en) | 2017-09-12 | 2017-09-12 | A kind of full titanium alloy drilling rod of friction welding type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710818069.9A CN107420049A (en) | 2017-09-12 | 2017-09-12 | A kind of full titanium alloy drilling rod of friction welding type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107420049A true CN107420049A (en) | 2017-12-01 |
Family
ID=60432032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710818069.9A Pending CN107420049A (en) | 2017-09-12 | 2017-09-12 | A kind of full titanium alloy drilling rod of friction welding type |
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| CN (1) | CN107420049A (en) |
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 |
| CN114160956A (en) * | 2021-10-29 | 2022-03-11 | 苏州思萃熔接技术研究所有限公司 | Friction welding method for butt joint of high-strength steel thick-wall pipe and joint |
| US20230130962A1 (en) * | 2021-10-22 | 2023-04-27 | Halliburton Energy Services, Inc. | Processing route to design and manufacture highly configurable non-magnetic down-hole sensor collars |
| US11717911B1 (en) * | 2020-10-22 | 2023-08-08 | Paul Po Cheng | Method of fusing metal objects together |
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| CN114160956A (en) * | 2021-10-29 | 2022-03-11 | 苏州思萃熔接技术研究所有限公司 | Friction welding method for butt joint of high-strength steel thick-wall pipe and joint |
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Application publication date: 20171201 |
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