US20060000643A1 - Top drive torsional baffle apparatus and method - Google Patents
Top drive torsional baffle apparatus and method Download PDFInfo
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- US20060000643A1 US20060000643A1 US11/152,756 US15275605A US2006000643A1 US 20060000643 A1 US20060000643 A1 US 20060000643A1 US 15275605 A US15275605 A US 15275605A US 2006000643 A1 US2006000643 A1 US 2006000643A1
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- torsional
- drillstring
- baffle
- top drive
- vibrations
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B17/02—Couplings; joints
- E21B17/03—Couplings; joints between drilling rod or pipe and drill motor or surface drive, e.g. between drilling rod and hammer
Definitions
- the present invention generally relates to apparatus and methods to reduce the detrimental effects of bit-bounce and stick-slip vibrations on a top drive drilling assembly. More particularly, the invention relates to a high-impedance torsional baffle located below the top drive drilling assembly atop a drillstring. More particularly still, the invention relates to a cylindrical or disc-shaped baffle located below a top drive drilling assembly to counteract torsional vibrations that would otherwise damage the top drive.
- a drive system rotates a string of threadably connected pipes called a drillstring at a proximal end.
- a bottom hole assembly including a drill bit resides at the distal end of the drillstring and is used to drill the well deeper.
- Lubricating fluid called drilling mud
- the slurry of drilling mud and cuttings returns to the surface of the well through an annulus formed between the outer diameter of the drillstring and the inside diameter of the drilled bore. For this reason, it is not uncommon for a drill bit to be disposed upon the end of a smaller diameter drillstring.
- drill pipes of the drillstring are often constructed from relatively thin-walled tubes and do not exhibit a high amount resistance to torsional stress and strain, or torsional impedance.
- weight collars are typically located behind the bit. These weight collars, typically constructed as thick-walled tubular members, have an increased moment of inertia compared to the drill pipe sections thereabove. Because of the high weight at the distal end relative to its remainder, the drillstring has the capability to act as a torsional (rotational) pendulum in its movement. Pulses in rotational displacement of the drill bit and weight collars downhole create oscillatory conditions in the lighter remainder portion of the drillstring along its length. As the length of the drillstring increases, the torsional vibrations of the drillstring become more pronounced and unpredictable. These vibrations adversely impact drilling equipment located at the proximal end of the drillstring and shorten the life thereof, necessitating costly and time consuming repair and reconditioning operations.
- a stick-slip condition occurs when the drill bit gets caught on the formation, hangs momentarily while torsional energy and strain builds up in the drillstring, and then rotates again when the torsional strain is high enough to overcome the snag in the formation.
- the drill bit is released from the snag in the formation, the bit accelerates to a speed faster than the rotation of the surface by the drive system so the drill bit can “catch up” to the radial position of the drillstring.
- Bit-bounce is a similar drillstring and drill bit phenomenon that also damages equipment and reduces the rate of penetration. Bit-bounce is similar to stick-slip, but bit-bounce implies an axial (up and down) component to the stress and vibrations experienced. A more detailed and mathematical description of various stick-slip phenomena can be found in Society of Petroleum Engineers technical papers SPE 16659 by A. Kyllingstad, et al. entitled “A Study of Stick-Slip Motion of the Bit” and SPE 18049 by G. Halsey, et al. entitled “Torque Feedback Used to Cure Stick-Slip Motion,” both hereby incorporated by reference herein.
- Top drive assemblies are typically large motors that raise and lower with the lifting bales of the rig and angularly drive the drillstring.
- the top drive glides up and down and is guided by a pair of structural rails so torque can be applied to the drillstring without the top drive or the lifting bales twisting.
- the drillstring is in direct, hard, contact with the top drive assembly so any torsional vibrations or loads will be transmitted directly thereto.
- rotary table drive systems allowed the drillstring to be driven by a Kelly drive unit that would slide up and down through a profile in the center of the rotary table.
- the table profile would have a geometric polygonal (usually square or hexagonal) profile to correspond with a matching profile of the Kelly.
- the rotary table profile usually included enough clearance so the Kelly could be easily slidably engaged therethrough. Older, rotary table systems, while susceptible to torsional vibrations, were not as easily and costly damaged as the newer top drive systems are today.
- casing drilling involves the use of a casing string, ie. a relatively large diameter steel tubing intended to remain in place in the wellbore following installation, to transport and drive the BHA to the bottom of the wellbore.
- the benefit of casing drilling is that the wellbore is simultaneously drilled and cased, thus saving time of “tripping out” the drillstring and subsequently running a separate casing operation.
- the wellbore is drilled using the larger diameter casing string as a drillstring and the bottom hole assembly is retrieved therethrough when complete, leaving the casing behind in the wellbore to be cemented in place (if desired).
- casing drilling poses new challenges with respect to torsional vibrations resulting from stick-slip conditions. Particularly it has been observed that high-frequency torsional vibrations in casing drilling are more severe than when using ordinary drill pipe as a drillstring. It is suggested that this phenomenon results from a higher torsional stiffness of the casing relative to the drill pipe. Furthermore, the torsional vibrations are increased when pipe is run within other pipe (i.e. drillstring run within emplaced casing string), possibly from resonance between the two strings.
- the method preferably includes connecting a bottom hole assembly to a distal end of a drillstring and driving a proximal end of the drillstring with a top drive unit.
- the method preferably includes connecting a torsional baffle between a proximal end of the drillstring and a top drive unit.
- the method preferably includes rotating the proximal end of the drillstring and the torsional baffle with the top drive unit.
- the method preferably includes impeding torsional vibrations from the drillstring and the bottom hole assembly with the torsional baffle.
- the apparatus preferably includes a bottom hole assembly located in a wellbore upon a distal end of the drillstring.
- the apparatus preferably includes a drive unit configured to rotate and manipulate the drillstring.
- the apparatus preferably includes a torsional baffle located upon a proximal end of the drillstring, wherein the torsional baffle has torsional impedance sufficient enough to reduce torsional vibrations of the drillstring impacting upon the drive unit.
- the discrepancies of the prior art are also addressed by a top drive assembly to drive a drillstring within a wellbore.
- the top drive assembly preferably includes a bottom hole assembly located in the wellbore upon a distal end of the drillstring, wherein the bottom hole assembly includes a drill bit.
- the top drive assembly preferably includes a torsional baffle located between the top drive assembly and the proximal end of the drillstring.
- the torsional baffle has a torsional impedance to reduce torsional vibrations experienced by the top drive assembly.
- FIG. 1 is a schematic view drawing of a top drive system using a torsional baffle in accordance with a first preferred embodiment of the present invention.
- Drilling assembly 100 preferably includes a top drive unit 102 , a torsional baffle 104 , a length of drillstring 106 , and a bottom hole assembly (BHA) 108 .
- BHA 108 is much more dense and heavier relative to drillstring 106 .
- the oscillations of bit sticking and slipping is likely to induce a torsional oscillation into drillstring 106 .
- These torsional oscillations are transmitted up drillstring 106 and to top drive unit 102 .
- Torsional baffle 104 acts to dampen these angular oscillations, thereby reducing the force and magnitude of any stresses experienced therefrom by top drive unit 102 .
- a linking sub 110 connects baffle 104 to top drive unit 102 .
- Linking sub 110 is constructed so as to minimize any torsional vibrations or oscillations that may be created when top drive 102 and baffle 108 interact with each other.
- Baffle 104 is preferably constructed as a terminator of high torsional impedance and designed to increase drilling stability and isolate top drive 102 from torsional oscillations in drillstring 106 .
- Baffle 104 is preferably similar to a flywheel or gyroscope, albeit a low RPM flywheel or gyroscope. Therefore, baffle 104 is preferably constructed to have large torsional impedance so that high frequency torsional vibrations are not transmitted therethrough.
- baffle 104 can be constructed as a solid, steel disc or cylinder. While a solid steel structure is disclosed, it should be understood by anyone skilled in the art that any material or configuration can be used to maximize torsional impedance. Because top drive unit 102 already carries a large moment of inertia, torsional impedance is more important to the success of baffle 104 in reducing torsional vibrations than the moment of inertia.
- baffle 104 cylinders with a relatively large diameter to length ratio are preferable.
- Tests depicting this radial scaling of impedance have shown torsional baffles constructed 24 inches in diameter and three feet long to have similar impedance values to baffles constructed 31 inches in diameter and only one foot in length. For this reason, an operator wishing to conserve “height” below top drive unit 102 may opt for disc-shaped geometries for baffle 108 over cylinder-shaped geometries. Vertical space is at a premium on drilling sites and a savings of even a few inches would be highly beneficial to a rig operator.
- baffle 104 While it would be desirable to determine a size and configuration of baffle 104 that would stabilize drillstrings of various sizes and configurations, it does not seem possible. Too many variables exist with regard to the drilling mud, drillstring, formation, and other equipment used to make that goal reachable. Therefore, it is an advantage of the mechanical baffles 104 that they are cheap, easily handled, and a range of them can be used experimentally to attempt a particular system.
- Baffle 104 is therefore preferably used as a drillstring terminator of high torsional impedance to increase drilling stability or to isolate top drive unit 102 from torsional oscillations in drillstring 106 .
- devices having large angular momentum can be added to drillstring 106 or top drive unit 102 itself to make top drive unit 102 stiffer.
Abstract
The present invention includes an apparatus and method including a torsional baffle to protect a top drive or rotary table assembly of a drilling rig from torsional vibrations caused from vibration inducing drilling conditions. The torsional baffle includes sufficient torsional impedance to prevent the drilling vibrations from damaging the internal workings of the rotary table or top drive apparatus.
Description
- The present invention generally relates to apparatus and methods to reduce the detrimental effects of bit-bounce and stick-slip vibrations on a top drive drilling assembly. More particularly, the invention relates to a high-impedance torsional baffle located below the top drive drilling assembly atop a drillstring. More particularly still, the invention relates to a cylindrical or disc-shaped baffle located below a top drive drilling assembly to counteract torsional vibrations that would otherwise damage the top drive.
- In typical oilfield drilling operations, a drive system rotates a string of threadably connected pipes called a drillstring at a proximal end. Typically, a bottom hole assembly (BHA) including a drill bit resides at the distal end of the drillstring and is used to drill the well deeper. Lubricating fluid, called drilling mud, is pumped down an internal bore of the drillstring to lubricate and cool the drill bit as well as remove cuttings from the well. The slurry of drilling mud and cuttings returns to the surface of the well through an annulus formed between the outer diameter of the drillstring and the inside diameter of the drilled bore. For this reason, it is not uncommon for a drill bit to be disposed upon the end of a smaller diameter drillstring. Furthermore, to reduce the amount of drillstring weight on the drill bit, drill pipes of the drillstring are often constructed from relatively thin-walled tubes and do not exhibit a high amount resistance to torsional stress and strain, or torsional impedance.
- Because some weight on the drill bit is desirable to properly load the bit, weight collars are typically located behind the bit. These weight collars, typically constructed as thick-walled tubular members, have an increased moment of inertia compared to the drill pipe sections thereabove. Because of the high weight at the distal end relative to its remainder, the drillstring has the capability to act as a torsional (rotational) pendulum in its movement. Pulses in rotational displacement of the drill bit and weight collars downhole create oscillatory conditions in the lighter remainder portion of the drillstring along its length. As the length of the drillstring increases, the torsional vibrations of the drillstring become more pronounced and unpredictable. These vibrations adversely impact drilling equipment located at the proximal end of the drillstring and shorten the life thereof, necessitating costly and time consuming repair and reconditioning operations.
- One unfavorable oscillatory drillstring condition is commonly known as stick-slip, whereby the drill bit does not rotate continuously and smoothly at the bottom of the hole. A stick-slip condition occurs when the drill bit gets caught on the formation, hangs momentarily while torsional energy and strain builds up in the drillstring, and then rotates again when the torsional strain is high enough to overcome the snag in the formation. When the drill bit is released from the snag in the formation, the bit accelerates to a speed faster than the rotation of the surface by the drive system so the drill bit can “catch up” to the radial position of the drillstring. This phenomenon causes a “jerky” and oscillatory rotation of the drill bit and drillstring even though the drillstring is rotated at a substantially constant pace hundreds or thousands of feet above at the surface. These cyclical speed variations and torsional loading and unloading of the drillstring transmit torsional vibrations, stresses, and strains to drive equipment at the surface and causes damage and premature wear. Bit-bounce is a similar drillstring and drill bit phenomenon that also damages equipment and reduces the rate of penetration. Bit-bounce is similar to stick-slip, but bit-bounce implies an axial (up and down) component to the stress and vibrations experienced. A more detailed and mathematical description of various stick-slip phenomena can be found in Society of Petroleum Engineers technical papers SPE 16659 by A. Kyllingstad, et al. entitled “A Study of Stick-Slip Motion of the Bit” and SPE 18049 by G. Halsey, et al. entitled “Torque Feedback Used to Cure Stick-Slip Motion,” both hereby incorporated by reference herein.
- Inventions have been devised to reduce the amount of stick-slip and bit-bounce in the drillstring to prolong the life of drillstring components but they do not protect surface driving equipment. One such invention, U.S. Pat. No. 6,166,654 issued to Leon Van Den Steen on Dec. 26, 2000 and entitled “Drilling Assembly with Reduced Stick-Slip Tendency” is hereby incorporated by reference herein. Another invention, U.S. Pat. No. 6,308,940 issued to Edwin Anderson on Oct. 30, 2001 and entitled “Rotary and Longitudinal Shock Absorber for Drilling” is also hereby incorporated by reference herein. Most inventions of the prior art attempt to reduce torsional vibrations in the drillstring rather than protect equipment from the vibrations. Furthermore, since these solutions tend to reduce the torsional vibrations rather than eliminate them, protection of equipment is still necessary. An invention to reduce the effects of these inevitable vibrations at the surface is still needed.
- With the advent of top drive drilling systems, those that rotate and drive the drillstring from the lifting bales of the rig itself, torsional vibrations can become costly. Top drive assemblies are typically large motors that raise and lower with the lifting bales of the rig and angularly drive the drillstring. Typically, the top drive glides up and down and is guided by a pair of structural rails so torque can be applied to the drillstring without the top drive or the lifting bales twisting. As such, the drillstring is in direct, hard, contact with the top drive assembly so any torsional vibrations or loads will be transmitted directly thereto. Formerly, rotary table drive systems allowed the drillstring to be driven by a Kelly drive unit that would slide up and down through a profile in the center of the rotary table. The table profile would have a geometric polygonal (usually square or hexagonal) profile to correspond with a matching profile of the Kelly. The rotary table profile usually included enough clearance so the Kelly could be easily slidably engaged therethrough. Older, rotary table systems, while susceptible to torsional vibrations, were not as easily and costly damaged as the newer top drive systems are today.
- Furthermore, with the advent of casing drilling, torsional vibrations become more of an issue than they were under conventional drillstring drilling. Casing drilling involves the use of a casing string, ie. a relatively large diameter steel tubing intended to remain in place in the wellbore following installation, to transport and drive the BHA to the bottom of the wellbore. The benefit of casing drilling is that the wellbore is simultaneously drilled and cased, thus saving time of “tripping out” the drillstring and subsequently running a separate casing operation. Using a casing drilling scheme, the wellbore is drilled using the larger diameter casing string as a drillstring and the bottom hole assembly is retrieved therethrough when complete, leaving the casing behind in the wellbore to be cemented in place (if desired). Society of Petroleum Engineering technical papers 52789 and 67731 respectively authored by R. Tessari, et al. and S. Shepard, et al. and respectively entitled “Casing Drilling: A Revolutionary Approach to Reducing Well Costs” and “Casing Drilling: An Emerging Technology,” hereby incorporated herein by reference, disclose developments and benefits of casing drilling systems.
- However beneficial and cost effective, casing drilling poses new challenges with respect to torsional vibrations resulting from stick-slip conditions. Particularly it has been observed that high-frequency torsional vibrations in casing drilling are more severe than when using ordinary drill pipe as a drillstring. It is suggested that this phenomenon results from a higher torsional stiffness of the casing relative to the drill pipe. Furthermore, the torsional vibrations are increased when pipe is run within other pipe (i.e. drillstring run within emplaced casing string), possibly from resonance between the two strings.
- It has been suggested that solutions to the high-frequency vibrations experienced with casing drilling are to slow the rotary drilling speed, increase the lubricity of the drilling mud used, and modify the ratio of inner diameter to outer diameter. Slowing the rotary drilling speed is not favored because it has a negative impact on the rate of penetration (ROP) of the drilling assembly, making drilling take longer and more costly. Second, changing the drilling fluid composition is not always financially or physically feasible for a particular well. Finally, the ratio of the inside diameter to the outside diameter can only be finitely changed. If a well is to be created with a certain size casing, the operator is not given much freedom to deviate from the well specifications. Running larger casing entails drilling a larger bore, thereby increasing the cost of the well dramatically.
- A system to protect more modern and expensive top drive drilling assemblies from torsional vibrations is needed in the art. The embodiments herein address the shortcomings of the current state of the art in this regard.
- The discrepancies of the prior art are addressed by a method to reduce torsional vibrations in a drilling apparatus. The method preferably includes connecting a bottom hole assembly to a distal end of a drillstring and driving a proximal end of the drillstring with a top drive unit. The method preferably includes connecting a torsional baffle between a proximal end of the drillstring and a top drive unit. The method preferably includes rotating the proximal end of the drillstring and the torsional baffle with the top drive unit. The method preferably includes impeding torsional vibrations from the drillstring and the bottom hole assembly with the torsional baffle.
- The discrepancies of the prior art are also addressed by an apparatus to impede torsional vibrations in a drillstring. The apparatus preferably includes a bottom hole assembly located in a wellbore upon a distal end of the drillstring. The apparatus preferably includes a drive unit configured to rotate and manipulate the drillstring. The apparatus preferably includes a torsional baffle located upon a proximal end of the drillstring, wherein the torsional baffle has torsional impedance sufficient enough to reduce torsional vibrations of the drillstring impacting upon the drive unit.
- The discrepancies of the prior art are also addressed by a top drive assembly to drive a drillstring within a wellbore. The top drive assembly preferably includes a bottom hole assembly located in the wellbore upon a distal end of the drillstring, wherein the bottom hole assembly includes a drill bit. The top drive assembly preferably includes a torsional baffle located between the top drive assembly and the proximal end of the drillstring. Preferably, the torsional baffle has a torsional impedance to reduce torsional vibrations experienced by the top drive assembly.
-
FIG. 1 is a schematic view drawing of a top drive system using a torsional baffle in accordance with a first preferred embodiment of the present invention. - Referring to
FIG. 1 , adrilling assembly 100 is shown schematically.Drilling assembly 100 preferably includes atop drive unit 102, atorsional baffle 104, a length ofdrillstring 106, and a bottom hole assembly (BHA) 108. As described above,BHA 108 is much more dense and heavier relative todrillstring 106. As such, when the drill bit ofBHA 108 encounters a stick-slip condition downhole, the oscillations of bit sticking and slipping is likely to induce a torsional oscillation intodrillstring 106. These torsional oscillations are transmitted updrillstring 106 and totop drive unit 102.Torsional baffle 104 acts to dampen these angular oscillations, thereby reducing the force and magnitude of any stresses experienced therefrom bytop drive unit 102. Preferably, a linkingsub 110 connectsbaffle 104 totop drive unit 102. Linkingsub 110 is constructed so as to minimize any torsional vibrations or oscillations that may be created whentop drive 102 and baffle 108 interact with each other. By addingbaffle 104 and linkingsub 110 undertop drive unit 102, the top drive is “beefed up” and protected from damaging downhole torsional oscillations. -
Baffle 104 is preferably constructed as a terminator of high torsional impedance and designed to increase drilling stability and isolate top drive 102 from torsional oscillations indrillstring 106.Baffle 104 is preferably similar to a flywheel or gyroscope, albeit a low RPM flywheel or gyroscope. Therefore, baffle 104 is preferably constructed to have large torsional impedance so that high frequency torsional vibrations are not transmitted therethrough. To maximize the torsional impedance, baffle 104 can be constructed as a solid, steel disc or cylinder. While a solid steel structure is disclosed, it should be understood by anyone skilled in the art that any material or configuration can be used to maximize torsional impedance. Becausetop drive unit 102 already carries a large moment of inertia, torsional impedance is more important to the success ofbaffle 104 in reducing torsional vibrations than the moment of inertia. - Furthermore, as torsional impedance increases more rapidly with mass in the transverse (radial) direction rather than the longitudinal direction, baffle 104 cylinders with a relatively large diameter to length ratio are preferable. Tests depicting this radial scaling of impedance have shown torsional baffles constructed 24 inches in diameter and three feet long to have similar impedance values to baffles constructed 31 inches in diameter and only one foot in length. For this reason, an operator wishing to conserve “height” below
top drive unit 102 may opt for disc-shaped geometries forbaffle 108 over cylinder-shaped geometries. Vertical space is at a premium on drilling sites and a savings of even a few inches would be highly beneficial to a rig operator. While it would be desirable to determine a size and configuration ofbaffle 104 that would stabilize drillstrings of various sizes and configurations, it does not seem possible. Too many variables exist with regard to the drilling mud, drillstring, formation, and other equipment used to make that goal reachable. Therefore, it is an advantage of themechanical baffles 104 that they are cheap, easily handled, and a range of them can be used experimentally to attempt a particular system. - Using a
baffle 104 in accordance with the present invention, tests show that stick-slip and rig vibrations are markedly reduced.Baffle 104 is therefore preferably used as a drillstring terminator of high torsional impedance to increase drilling stability or to isolatetop drive unit 102 from torsional oscillations indrillstring 106. Furthermore, devices having large angular momentum (including, but not limited to, gyroscopes and flywheels) can be added todrillstring 106 ortop drive unit 102 itself to maketop drive unit 102 stiffer. - Numerous embodiments and alternatives thereof have been disclosed. While the above disclosure includes the best mode belief in carrying out the invention as contemplated by the named inventors, not all possible alternatives have been disclosed. For that reason, the scope and limitation of the present invention is not to be restricted to the above disclosure, but is instead to be defined and construed by the appended claims.
Claims (31)
1. A method to reduce torsional vibrations in a drilling apparatus, the method comprising:
connecting a bottom hole assembly to a distal end of a drillstring;
driving a proximal end of the drillstring with a top drive unit;
connecting a torsional baffle between the proximal end of the drillstring and the top drive unit;
rotating the proximal end of the drillstring and the torsional baffle with the top drive unit;
impeding torsional vibrations from the drillstring and the bottom hole assembly with the torsional baffle.
2. The method of claim 1 wherein the drillstring is a casing string.
3. The method of claim 1 wherein the torsional baffle is disc-shaped.
4. The method of claim 3 wherein the torsional baffle has a diameter greater than 24 inches.
5. The method of claim 3 wherein the torsional baffle has a diameter to thickness ratio greater than 2.5.
6. The method of claim 1 wherein the torsional baffle is cylinder-shaped.
7. The method of claim 6 wherein the torsional baffle has a length of less than 36 inches.
8. The method of claim 1 wherein the torsional baffle is constructed as a solid metal disc.
9. The method of claim 1 wherein a linking sub connects the torsional baffle to the top drive unit.
10. The method of claim 1 wherein the torsional baffle is configured to impede the transmission of high-frequency vibrations from the drillstring to the top drive unit.
11. The method of claim 1 further comprising selecting a configuration for the torsional baffle based upon wellbore parameters.
12. The method of claim 11 wherein the wellbore conditions are selected from the group including drillstring inner diameter, drillstring outer diameter, drillstring length, drilling mud lubricity, drilling rotational speed, and wellbore formation.
13. An apparatus to impede torsional vibrations in a drillstring, the apparatus comprising:
a bottom hole assembly located in a wellbore upon a distal end of the drillstring;
a drive unit configured to rotate and manipulate the drillstring;
a torsional baffle located upon a proximal end of the drillstring;
the torsional baffle having a torsional impedance sufficient enough to reduce torsional vibrations of the drillstring impacting upon the drive unit.
14. The apparatus of claim 13 wherein the drive unit is a rotary table.
15. The apparatus of claim 13 wherein the drive unit is a top drive.
16. The apparatus of claim 13 wherein the torsional baffle is disc-shaped.
17. The apparatus of claim 16 wherein the torsional baffle has a radius greater than 24 inches.
18. The apparatus of claim 16 wherein the torsional baffle has a radius to thickness ration greater than 2.5.
19. The apparatus of claim 13 wherein the torsional baffle is cylinder-shaped.
20. The apparatus of claim 13 wherein the torsional vibrations are the result of stick-slip of the bottom hole assembly.
21. The apparatus of claim 13 wherein the torsional vibrations are the result of bit-bounce of the bottom hole assembly.
22. The apparatus of claim 13 wherein the torsional baffle is constructed from a homogeneous dense metallic material.
23. The apparatus of claim 22 wherein the dense metallic material is selected from the group consisting of iron, stainless steel, steel, and tungsten.
24. The apparatus of claim 13 wherein the drillstring is a casing string.
25. A top drive assembly to drive a drillstring within a wellbore, the top drive assembly comprising:
a bottom hole assembly located in the wellbore upon a distal end of the drillstring, the bottom hole assembly including a drill bit;
a torsional baffle located between the top drive assembly and the proximal end of the drillstring;
the torsional baffle having a torsional impedance to reduce torsional vibrations experienced by the top drive assembly.
26. The top drive assembly of claim 25 wherein the torsional baffle includes a homogeneous metallic disc.
27. The top drive assembly of claim 26 wherein the homogeneous metallic disc has a radius greater than 24 inches.
28. The top drive assembly of claim 26 wherein the homogeneous metallic disc has a radius to thickness ratio greater than 2.5.
29. The top drive assembly of claim 25 wherein the torsional baffle includes a homogeneous metallic cylinder.
30. The top drive assembly of claim 25 wherein the torsional vibrations are generated by the drill bit experiencing a stick-slip condition in the wellbore.
31. The top drive assembly of claim 25 where the drillstring is a casing string.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0414593A GB2415717A (en) | 2004-06-30 | 2004-06-30 | Drill string torsional vibrational damper |
GB0414593.4 | 2004-06-30 |
Publications (1)
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US20060000643A1 true US20060000643A1 (en) | 2006-01-05 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/152,756 Abandoned US20060000643A1 (en) | 2004-06-30 | 2005-06-14 | Top drive torsional baffle apparatus and method |
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US (1) | US20060000643A1 (en) |
GB (1) | GB2415717A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012064944A2 (en) * | 2010-11-10 | 2012-05-18 | Baker Hughes Incorporated | Drilling control system and method |
CN105004514A (en) * | 2015-06-29 | 2015-10-28 | 西南石油大学 | Device and method for experimental determination of drill string stick-slip vibration |
WO2016160698A1 (en) * | 2015-03-30 | 2016-10-06 | Schlumberger Technology Corporation | Drilling control system |
US9500045B2 (en) | 2012-10-31 | 2016-11-22 | Canrig Drilling Technology Ltd. | Reciprocating and rotating section and methods in a drilling system |
WO2023227704A1 (en) * | 2022-05-27 | 2023-11-30 | Itrec B.V. | A drill string drive to impart rotational power to a top end of drill string for drilling of a wellbore |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO333959B1 (en) * | 2012-01-24 | 2013-10-28 | Nat Oilwell Varco Norway As | Method and system for reducing drill string oscillation |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2913051A (en) * | 1956-10-09 | 1959-11-17 | Huber Corp J M | Method and apparatus for completing oil wells and the like |
US3947009A (en) * | 1974-12-23 | 1976-03-30 | Bucyrus-Erie Company | Drill shock absorber |
US4116285A (en) * | 1976-06-18 | 1978-09-26 | Coyne & Bellier, Bureau D'ingenieurs Conseils | Process and apparatus for producing deep boreholes |
US4544041A (en) * | 1983-10-25 | 1985-10-01 | Rinaldi Roger E | Well casing inserting and well bore drilling method and means |
US4571215A (en) * | 1983-06-08 | 1986-02-18 | Boroloy Industries International, Inc. | Vibration dampener apparatus |
US4844181A (en) * | 1988-08-19 | 1989-07-04 | Grey Bassinger | Floating sub |
US6166654A (en) * | 1997-04-11 | 2000-12-26 | Shell Oil Company | Drilling assembly with reduced stick-slip tendency |
US6308940B1 (en) * | 1997-03-12 | 2001-10-30 | Smith International, Inc. | Rotary and longitudinal shock absorber for drilling |
US6332841B1 (en) * | 1997-09-25 | 2001-12-25 | Foremost Industries, Inc. | Floating cushion sub |
US6364039B1 (en) * | 2000-04-28 | 2002-04-02 | Smith International, Inc. | Vibration damping tool |
US20020117306A1 (en) * | 2001-02-27 | 2002-08-29 | Detlef Hahn | Oscillating shear valve for mud pulse telemetry |
US20040149492A1 (en) * | 2003-01-27 | 2004-08-05 | Taylor Bruce L. | Drilling assembly and method |
US6785641B1 (en) * | 2000-10-11 | 2004-08-31 | Smith International, Inc. | Simulating the dynamic response of a drilling tool assembly and its application to drilling tool assembly design optimization and drilling performance optimization |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5372548A (en) * | 1990-03-23 | 1994-12-13 | Wohlfeld; William I. | Longitudinal and rotary shock absorber for rotary and percussion drill bits |
-
2004
- 2004-06-30 GB GB0414593A patent/GB2415717A/en not_active Withdrawn
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2005
- 2005-06-14 US US11/152,756 patent/US20060000643A1/en not_active Abandoned
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2913051A (en) * | 1956-10-09 | 1959-11-17 | Huber Corp J M | Method and apparatus for completing oil wells and the like |
US3947009A (en) * | 1974-12-23 | 1976-03-30 | Bucyrus-Erie Company | Drill shock absorber |
US4116285A (en) * | 1976-06-18 | 1978-09-26 | Coyne & Bellier, Bureau D'ingenieurs Conseils | Process and apparatus for producing deep boreholes |
US4571215A (en) * | 1983-06-08 | 1986-02-18 | Boroloy Industries International, Inc. | Vibration dampener apparatus |
US4544041A (en) * | 1983-10-25 | 1985-10-01 | Rinaldi Roger E | Well casing inserting and well bore drilling method and means |
US4844181A (en) * | 1988-08-19 | 1989-07-04 | Grey Bassinger | Floating sub |
US6308940B1 (en) * | 1997-03-12 | 2001-10-30 | Smith International, Inc. | Rotary and longitudinal shock absorber for drilling |
US6166654A (en) * | 1997-04-11 | 2000-12-26 | Shell Oil Company | Drilling assembly with reduced stick-slip tendency |
US6332841B1 (en) * | 1997-09-25 | 2001-12-25 | Foremost Industries, Inc. | Floating cushion sub |
US6364039B1 (en) * | 2000-04-28 | 2002-04-02 | Smith International, Inc. | Vibration damping tool |
US6785641B1 (en) * | 2000-10-11 | 2004-08-31 | Smith International, Inc. | Simulating the dynamic response of a drilling tool assembly and its application to drilling tool assembly design optimization and drilling performance optimization |
US20020117306A1 (en) * | 2001-02-27 | 2002-08-29 | Detlef Hahn | Oscillating shear valve for mud pulse telemetry |
US20040149492A1 (en) * | 2003-01-27 | 2004-08-05 | Taylor Bruce L. | Drilling assembly and method |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012064944A2 (en) * | 2010-11-10 | 2012-05-18 | Baker Hughes Incorporated | Drilling control system and method |
WO2012064944A3 (en) * | 2010-11-10 | 2013-01-17 | Baker Hughes Incorporated | Drilling control system and method |
GB2500494A (en) * | 2010-11-10 | 2013-09-25 | Baker Hughes Inc | Drilling control system and method |
US9410417B2 (en) | 2010-11-10 | 2016-08-09 | Baker Hughes Incorporated | Drilling control system and method |
GB2500494B (en) * | 2010-11-10 | 2018-10-17 | Baker Hughes Inc | Drilling control system and method |
US9500045B2 (en) | 2012-10-31 | 2016-11-22 | Canrig Drilling Technology Ltd. | Reciprocating and rotating section and methods in a drilling system |
WO2016160698A1 (en) * | 2015-03-30 | 2016-10-06 | Schlumberger Technology Corporation | Drilling control system |
US10612359B2 (en) | 2015-03-30 | 2020-04-07 | Schlumberger Technology Corporation | Drilling control system and method with actuator coupled with top drive or block or both |
CN105004514A (en) * | 2015-06-29 | 2015-10-28 | 西南石油大学 | Device and method for experimental determination of drill string stick-slip vibration |
WO2023227704A1 (en) * | 2022-05-27 | 2023-11-30 | Itrec B.V. | A drill string drive to impart rotational power to a top end of drill string for drilling of a wellbore |
NL2032006B1 (en) * | 2022-05-27 | 2023-12-11 | Itrec Bv | A drill string drive to impart rotational power to a top end of drill string for drilling of a wellbore |
Also Published As
Publication number | Publication date |
---|---|
GB2415717A (en) | 2006-01-04 |
GB0414593D0 (en) | 2004-08-04 |
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