EP3545162B1 - Raccord à filets multiples pour outils de fond de trou - Google Patents

Raccord à filets multiples pour outils de fond de trou Download PDF

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Publication number
EP3545162B1
EP3545162B1 EP17874651.7A EP17874651A EP3545162B1 EP 3545162 B1 EP3545162 B1 EP 3545162B1 EP 17874651 A EP17874651 A EP 17874651A EP 3545162 B1 EP3545162 B1 EP 3545162B1
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EP
European Patent Office
Prior art keywords
further characterized
component
wellbore apparatus
line
hydraulic
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.)
Active
Application number
EP17874651.7A
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German (de)
English (en)
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EP3545162A4 (fr
EP3545162A1 (fr
Inventor
Harald Grimmer
Christian Fulda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baker Hughes Holdings LLC
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Baker Hughes Holdings LLC
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Publication date
Priority claimed from US15/362,427 external-priority patent/US10731423B2/en
Application filed by Baker Hughes Holdings LLC filed Critical Baker Hughes Holdings LLC
Publication of EP3545162A1 publication Critical patent/EP3545162A1/fr
Publication of EP3545162A4 publication Critical patent/EP3545162A4/fr
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Publication of EP3545162B1 publication Critical patent/EP3545162B1/fr
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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
    • E21B17/02—Couplings; joints
    • E21B17/028—Electrical or electro-magnetic connections
    • 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
    • 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
    • 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
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded

Definitions

  • This disclosure relates generally to oilfield downhole tools and more particularly to methods and devices for transferring rotary power to a consumer.
  • BHA Bottom Hole Assembly
  • the BHA is attached to the bottom of a drill string, which is usually either a jointed rigid pipe or a relatively flexible spoolable tubing commonly referred to in the art as "coiled tubing.”
  • a drill string which is usually either a jointed rigid pipe or a relatively flexible spoolable tubing commonly referred to in the art as "coiled tubing.”
  • jointed pipe is utilized, the drill bit is rotated by rotating the jointed pipe from the surface and/or by a mud motor contained in the BHA. In the case of coiled tubing, the drill bit is rotated by the mud motor.
  • BHA's may often incorporate equipment that require the transfer of rotary power from a generator to a consumer; e.g ., from a drilling motor to a drill bit.
  • the transfer of such rotary power often occurs across two or more torque transmitting elements such as shafts.
  • the present disclosure addresses the need for threaded couplings that provide a connection to efficiently transfer energy, signals, and / or fluids while also providing enhanced torque transmitting capabilities during the transfer of rotary power between two or more torque transmitting elements.
  • GB 2327247 discloses a threaded coupling for transferring toque.
  • EP 2738347 discloses connections between downhole tubulars.
  • the present disclosure also provides a method for forming a connection in a wellbore apparatus as claimed in claim 11.
  • the present disclosure relates to devices and methods for enhanced threaded connections between a driving rotating member and a driven rotating member. Threaded connections for torque transmission from one component to another can become damaged if over-torqued. To increase the torque capacity, the present disclosure uses a multi-start thread to reduce the induced shoulder load between two threaded components for a given torque. Additionally, the "make-up" and “break up” may be faster for such threaded connections.
  • the present disclosure is susceptible to embodiments of different forms. The drawings show and the written specification describes specific embodiments of the present disclosure with the understanding that the present disclosure is to be considered an exemplification of the principles of the disclosure, and is not intended to limit the disclosure to that illustrated and described herein.
  • FIG. 1 there is shown an embodiment of a drilling system 10 utilizing a bottomhole assembly (BHA) 60 configured for drilling wellbores. While a land system is shown, the teachings of the present disclosure may also be utilized in offshore or subsea applications.
  • BHA bottomhole assembly
  • FIG.1 a laminated earth formation 11 is intersected by a wellbore 12.
  • the BHA 60 is conveyed via a drill string 22 into the wellbore 12.
  • the drill string 22 may be jointed drill pipe or coiled tubing, which may include embedded conductors for power and / or data for providing signal and / or power communication between the surface and downhole equipment.
  • the BHA 60 may include a drill bit 62 for forming the wellbore 12.
  • the BHA 60 may include one or more rotary power sources such as a drilling motor 120.
  • a pressurized drilling fluid is pumped down to the BHA 60 from the surface via the drill string 22 .
  • This flowing drilling fluid may be utilized to energize the drilling motor 120, which generates rotary power that rotates the drill bit 62.
  • the flowing drilling mud can also energize turbines or other similar devices that extract energy from the flowing drilling fluid.
  • the extracted energy may be utilized to generate electricity and / or pressure hydraulic fluids. It should be understood that generating rotary power (i.e., generating useful torque) and electrical power generation and pressuring of fluids are merely illustrative of a variety of functions that may be performed by a consumer of rotary power.
  • the drilling motor 120 is a positive displacement motor that includes a rotor 122 disposed in a stator 124 forming progressive cavities 123 there between. Fluid supplied under pressure to the motor 120 passes through the cavities 123 and rotates the rotor 122.
  • the rotor 122 in turn is connected to the drill bit 62 ( Fig. 1 ) via a drive train 125 that is formed of two or more interconnected torque transmitting members.
  • the drive train 125 includes a flex shaft 126 connected to a drive shaft 128 at a pin and box connection 130.
  • the drive train 125 may have a greater or a fewer number of these torque transmitting members.
  • the drive train 125 can transmit torque from the motor 120 to the drill bit 62 ( Fig. 1 ) using one or more threaded connections. These threaded connections may be used between the rotor 122, the universal joint (e.g. flex shaft) 126, and the drive shaft 128. In certain embodiments, the drive train 125 may also include a rotor adapter and bonnet (not shown) and a segmented drive shaft having upper and lower sections. Threaded connections may also be used transmit torque along these components as well.
  • the threaded connection may include a pin end 150 and a box end 152 (shown in hidden lines).
  • the pin end 150 has external threads and the box end 152 has internal threads (not shown).
  • the pin end 150 and the box end 152 have abutting shoulders 154, 156, respectively.
  • an axial loading occurs at the shoulders 154, 156.
  • the ratio between a shoulder load and a make-up torque (MUT) depends on thread geometry. If the transmitted torque is higher than MUT, then the connection becomes over-torqued resulting in shoulder or pin damage.
  • the threaded connections of the drive train 125 may use a multi-start thread to reduce the induced shoulder load for a given torque. Reducing the shoulder load may increase the torque capacity of the connection and may therefore avoid the necessity of a double shouldering of a connection.
  • An additional advantage is the faster make and break of long thread cylindrical connections like at the bonnet of a motor.
  • a traditional thread which is a single start thread, has one helically wound thread.
  • a multi start screw has two or more intertwined threads.
  • the Fig. 3A thread embodiment has two intertwined threads, 158 and 159. The intertwined threads may be helically wound threads. In these screw configurations, the effective pitch is equal to the pitch of a standard thread multiplied by the number of starts.
  • drill bit is only one illustrative consumer of rotary power.
  • Other consumers include, but are not limited to, under-reamers, reamers, pipe cutting tools, etc.
  • the number of thread starts may vary depending on application. Thus, the ratio between a make-up torque and a break out torque may also vary significantly.
  • Fig. 3B shows an end view of a two-start thread that has intertwined threads, 158, 159.
  • Fig. 4 show the end view of a three start threads having three intertwined threads, 160, 162, 164. While only up to three thread starts are shown, the number of thread starts may be even higher. The ultimate number of thread starts is reached for an infinite pitch resulting in a pure spline connection. For a relatively high number of thread starts (e.g., five or more depending on pitch and diameter), a potential loss of self locking capability may be addressed with supplemental locking features. Nevertheless, these relatively high thread starts may still be able to transmit bending loads and apply a pre-load (clamping force) on components.
  • Embodiments of the present disclosure also utilize the multi-start threads in configurations where it is desirable to align two components at a connection. For instance, alignment may be needed to operatively connect components; e.g., enable the transfer or exchange of electrical, optical, acoustic data signals, analog signals, digital signals, power, and / or fluid between components. More generally, the use of multi-start threads can enable an "operative connection” or “operative coupling” that allows energy, power, force, and/or pressure in any form to be conveyed between components that require precise alignment in order to function.
  • Fig. 5 shows a first tool section 200 and in dashed lines a second tool section 202.
  • a multi-start thread 204 connects the tool sections 200, 202.
  • the first tool section 200 has a first element 206 associated with a line segment 208 and the second tool section has a second element 210 associated with a line segment 212.
  • the line segments 208, 212 may be parts of one or more components. In order to operatively connect such components, the first element 206 and the second element 210 may need to have a predetermined relative alignment with a relatively low tolerance.
  • the orientation may be based on axial alignment, circumferential alignment, radial alignment, angular alignment, longitudinal alignment, or any other suitable reference frame.
  • the movement of screwing will create a circumferential as well as a longitudinal displacement.
  • the circumferential as well as the longitudinal displacement is much lower than the displacement in a conventional thread with comparable connection strength. Consequently, the multi-start thread permit applying a specific torque with which the two elements 206, 210 can be oriented to each other at higher accuracy with respect to circumferential and longitudinal displacement.
  • the elements 206, 210 are shown as being in physical contact in order to be operatively connected.
  • the elements may be contacting surfaces, seals, rings, or other structures configured to forming a mating contact.
  • the elements 206 may also be openings formed in surfaces that mate with one another.
  • Fig. 6 shows another embodiment wherein the elements 206, 210 are positioned in a coupler 214 and do not require physical contact in order to be operatively connected but still deliver a better performance when aligning them with a higher accuracy.
  • the elements 206, 210 may use couplers utilizing inductive coupling, electromagnetic resonance coupling, capacitive coupling, galvanic coupling, optocouplers, acoustic couplers, and / or transmit / receive signals.
  • the performance of couplers may depend significantly on the circumferential and/or longitudinal alignment of opposing coupler components. Consequently, the coupler performance depends to a much lesser extent on the amount of applied torque with which the first and second components are screwed together.
  • Fig. 7 schematically illustrates a well tool 220 that may utilize one or more connections according to the present disclosure.
  • the well tool 220 may be a drill pipe, coiled tubing, a section of a BHA, a liner, a casing, or any other tool described above.
  • the well tool 220 has the first tool section 200 and the second tool section 202, which are connected by the multi-start thread 204 at a joint 222.
  • a line 224 may cross the joint 222.
  • the line 224 may be configured to convey one or more of an optical signal, an electrical signal, an acoustic signal, a fluid, and / or other energy streams.
  • the line 224 may be formed of any type of conduit, passage, tube, or a signal carrier, including, but not limited to, a metal wire, fiber optical lines, a hydraulic line, etc.
  • the line 224 may be located centric or eccentric within the well tool 220. While the line is shown to be small compared to the well tool 220 in two dimensions, it may also be shaped to be much larger compared to what is shown in the figures.
  • any number of components may be associated with the line 224, including, but not limited to, one or more sensors, an electromechanic actuator, a hydraulic actuator, an electric pump, a hydraulic pump, a hydraulic consumer, a valve, a piston, an electrical power generator, an electrical power consumer, an electronic component, a microprocessor, a communication device, a sensor, a formation evaluation tool, a BHA orientation sensor, steering devices, drilling motors, etc. including but not limited to surface equipment. Also, while one line 224 is shown, two or more lines may be used.
  • the line 224 can cross the thread 204.
  • multi-start threads allows the openings in the two connecting threads where the lines run through to be much smaller than when conventional threads are used. In the same way, using multi-start threads allow an alignment with much higher accuracy of opposing coupler components in the connecting threads.
  • the threaded connection is much less sensitive against overtorque, whereas in conventional threads, the lines would be sheared, contacts would be disconnected, couplers would be misaligned when applying overtorque.
  • the openings of the line 224 can be formed in the surface(s) on which threads are physically formed.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (13)

  1. Appareil pour trou de forage, comprenant :
    - un premier constituant (200) ayant un premier élément (206) ; et
    - un second constituant (202) ayant un second élément (210),
    le premier élément (206) et le second élément (210) étant raccordés de manière fonctionnelle l'un à l'autre,
    le premier élément (206) et le second élément (210) étant chacun un segment d'une ligne (224), caractérisé par le fait que le premier constituant (200) et le second constituant sont raccordés par un raccord fileté à plusieurs filets (204).
  2. Appareil pour trou de forage selon la revendication 1, en outre caractérisé en ce que la ligne (224) est conçue pour transporter l'un parmi : (i) un signal optique, (ii) un signal électrique, (iii) un signal acoustique, (iv) un fluide, (v) de l'énergie.
  3. Appareil pour trou de forage selon la revendication 1, en outre caractérisé par un coupleur raccordant de manière fonctionnelle le premier élément (206) au second élément (210).
  4. Appareil pour trou de forage selon la revendication 3, en outre caractérisé en ce que le coupleur forme un couplage par induction entre le premier élément (206) et le second élément (210).
  5. Appareil pour trou de forage selon la revendication 3, outre caractérisé en ce que le coupleur forme un couplage de résonance électromagnétique entre le premier élément (206) et le second élément (210).
  6. Appareil pour trou de forage selon la revendication 3, en outre caractérisé en ce que le coupleur forme un couplage capacitif entre le premier élément (206) et le second élément (210).
  7. Appareil pour trou de forage selon la revendication 3, en outre caractérisé en ce que le coupleur forme un contact physique entre le premier élément (206) et le second élément (210).
  8. Appareil pour trou de forage selon la revendication 1, en outre caractérisé en ce que le premier élément (206) est l'un parmi : un fil, un capteur, une pompe hydraulique, une conduite hydraulique, un consommateur hydraulique, un générateur d'énergie électrique, un consommateur d'énergie électrique, un actionneur électromécanique, un actionneur hydraulique, une pompe électrique, un consommateur hydraulique, une soupape, un piston, un composant électronique, un microprocesseur, un dispositif de communication, un outil d'évaluation de formation, un capteur d'orientation BHA, des dispositifs de commande et un moteur de forage.
  9. Appareil pour trou de forage selon la revendication 1, en outre caractérisé en ce que le premier constituant (200) est l'un parmi : (i) une tige de forage, (ii) un tube spiralé, (iii) une section d'un BHA, (iv) un revêtement, (v) un tubage ; et le second constituant (202) est l'un parmi : (i) une tige de forage, (ii) un tube spiralé, (iii) une section d'un BHA, (iv) un revêtement, (v) un tubage.
  10. Appareil pour trou de forage selon la revendication 1, en outre caractérisé en ce que le raccord fileté à plusieurs filets (204) a au moins trois fils enroulés en hélice entrelacés.
  11. Procédé permettant de créer un raccord dans un appareil pour trou de forage, comprenant :
    - le positionnement d'un premier élément (206) dans un premier constituant (200) ;
    - le positionnement d'un second élément (210) dans un second constituant (202) ;
    - le raccord du premier constituant (200) au second constituant (202) à l'aide d'un raccord fileté à plusieurs filets (204) ; et
    - le raccord de manière fonctionnelle du premier élément (206) au second élément (210),
    dans lequel le premier élément (206) et le second (210) éléments sont chacun un segment d'une ligne (224).
  12. Procédé selon la revendication 11, en outre caractérisé par l'utilisation de la ligne (224) pour transporter au moins l'un parmi : (i) un signal optique, (ii) un signal électrique, (iii) un signal acoustique, (iv) un fluide, (v) de l'énergie.
  13. Procédé selon la revendication 11, en outre caractérisé en ce que le premier élément (206) est l'un parmi : (i) un fil, (ii) un capteur, (iii) une pompe hydraulique, (iv) une conduite hydraulique (v) un consommateur hydraulique, (vi) un générateur de puissance électrique et (vii) un consommateur de puissance électrique.
EP17874651.7A 2016-11-28 2017-11-27 Raccord à filets multiples pour outils de fond de trou Active EP3545162B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/362,427 US10731423B2 (en) 2013-10-01 2016-11-28 Multi-start thread connection for downhole tools
PCT/US2017/063295 WO2018098439A1 (fr) 2016-11-28 2017-11-27 Raccord à filets multiples pour outils de fond de trou

Publications (3)

Publication Number Publication Date
EP3545162A1 EP3545162A1 (fr) 2019-10-02
EP3545162A4 EP3545162A4 (fr) 2020-08-19
EP3545162B1 true EP3545162B1 (fr) 2023-01-18

Family

ID=62196259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17874651.7A Active EP3545162B1 (fr) 2016-11-28 2017-11-27 Raccord à filets multiples pour outils de fond de trou

Country Status (3)

Country Link
EP (1) EP3545162B1 (fr)
RU (1) RU2725440C1 (fr)
WO (1) WO2018098439A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112302855B (zh) * 2020-11-02 2022-02-15 长江大学 一种井下发电装置及发电方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5896924A (en) * 1997-03-06 1999-04-27 Baker Hughes Incorporated Computer controlled gas lift system
CA2242592A1 (fr) 1997-07-11 1999-01-11 William D. Murray Entrees de filetage multiples pour des utilisations necessitant la transmission de couple eleve
US7913774B2 (en) * 2005-06-15 2011-03-29 Schlumberger Technology Corporation Modular connector and method
US8118093B2 (en) * 2008-11-04 2012-02-21 Intelliserv, Llc Threaded retention device for downhole transmission lines
US8136846B2 (en) * 2008-11-17 2012-03-20 Gandy Technologies Corporation Cylindrical tapered thread form for tubular connections
US8941384B2 (en) * 2009-01-02 2015-01-27 Martin Scientific Llc Reliable wired-pipe data transmission system
US9366094B2 (en) 2012-11-30 2016-06-14 Intelliserv, Llc Pipe joint having coupled adapter
US20150093189A1 (en) * 2013-10-01 2015-04-02 Baker Hughes Incorporated Multi-start thread connection for downhole tools

Also Published As

Publication number Publication date
EP3545162A4 (fr) 2020-08-19
WO2018098439A1 (fr) 2018-05-31
RU2725440C1 (ru) 2020-07-02
EP3545162A1 (fr) 2019-10-02

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