WO2023245944A1 - Tige de forage avec câble et son procédé de fabrication - Google Patents

Tige de forage avec câble et son procédé de fabrication Download PDF

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Publication number
WO2023245944A1
WO2023245944A1 PCT/CN2022/127948 CN2022127948W WO2023245944A1 WO 2023245944 A1 WO2023245944 A1 WO 2023245944A1 CN 2022127948 W CN2022127948 W CN 2022127948W WO 2023245944 A1 WO2023245944 A1 WO 2023245944A1
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WO
WIPO (PCT)
Prior art keywords
cable
conductive ring
drill pipe
cabled
male connector
Prior art date
Application number
PCT/CN2022/127948
Other languages
English (en)
Chinese (zh)
Inventor
韩飞
张全立
徐丙贵
胡志坚
王爱国
杨晖
王宏伟
贾涛
乔汉
李星月
肖建秋
刘志同
邵强
朱英杰
卢静
杨斯媛
Original Assignee
中国石油天然气集团有限公司
中国石油集团工程技术研究院有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中国石油天然气集团有限公司, 中国石油集团工程技术研究院有限公司 filed Critical 中国石油天然气集团有限公司
Publication of WO2023245944A1 publication Critical patent/WO2023245944A1/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
    • 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
    • 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
    • E21B17/023—Arrangements for connecting cables or wirelines to downhole devices
    • 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
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • 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
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors

Definitions

  • the present invention relates to the field of oil drilling and production, and in particular to a cabled drill pipe and a manufacturing method thereof.
  • cables are often used to connect surface and underground equipment to provide electricity or communication signals to underground equipment.
  • the drill pipe is used to build the cable inside the drill pipe through a coaxial connector to form a power supply and communication channel.
  • this technology occupies the water hole of the drill pipe, and often subsequent pitching cannot be performed after the cable is inserted. Construction work.
  • Another way is to make the cable into a conductor braid, and then fit it to the inner wall of the drill pipe to form a power supply and communication channel.
  • this technology has a low degree of protection for the cable and can easily cause erosion and damage to the cable.
  • there is an information drill pipe through non-contact induction coupling but this drill pipe can only be used to transmit communication signals and cannot realize power transmission.
  • the object of the present invention is to provide a cabled drill pipe and a manufacturing method thereof in order to overcome the above-mentioned problems existing in the prior art.
  • the present invention provides a cabled drill rod.
  • the cabled drill rod has a hollow shaft and connectors respectively connected to both ends of the shaft.
  • the inner wall of the shaft is provided with A cable trough extending in the axial direction
  • the cable trough is provided with a cable fixed by a fixing part
  • the fixing part is configured to make the cable trough fit the inner wall surface of the shaft
  • the fixing part surrounds Formed as a fluid channel isolated from the cable trough, the two ends of the cable are electrically connected to the corresponding connectors, so that multiple cable drills can be connected in series through the connectors.
  • the cable groove is formed by a rubber piece that fits the inner wall of the shaft, and the fixing portion fits or is integrally formed on the inner side of the rubber piece away from the shaft and secures the cable to the inner wall of the shaft.
  • the wire is enclosed within the cable trough.
  • the fixing part is an expansion tube, and the expansion tube is configured to fix the cable in the cable trough after being supported by expansion;
  • the inner wall of the expansion tube is provided with an insulation layer
  • the fixing part is a vulcanized layer
  • the cable is fixed in the cable trough through the vulcanized layer.
  • the connector includes a male connector and a female connector respectively connected to both ends of the shaft, and the male connector can be detachably connected to the female connector of the adjacent cabled drill rod. Connected to be able to connect two adjacent cabled drill pipes in series.
  • the outer surface of the male connector has external threads
  • the inner surface of the female connector has internal threads that can match the external threads, so that the female connector can detachably connect the adjacent ones.
  • the male connector of the cable drill pipe has external threads
  • the inner surface of the female connector has internal threads that can match the external threads, so that the female connector can detachably connect the adjacent ones.
  • the female connector is provided with a female connector conductive ring, and the female connector conductive ring is detachably connected to one end of the shaft and in contact with the cable.
  • the male connector is provided with a male connector conductive ring, and the male connector conductive ring is detachably connected to an end of the shaft away from the female connector and in contact with the cable.
  • the male connector conductive ring and the female connector conductive ring are both provided with connectors so that the male connector and the female connector are detachably connected to the shaft.
  • one end of the female connector conductive ring is provided with an elastic member, the elastic member elastically acts on the female connector conductive ring, and the female connector conductive ring is electrically connected to the adjacent one through the elastic member.
  • the male connector conductive ring of the cabled drill pipe is provided with an elastic member, the elastic member elastically acts on the female connector conductive ring, and the female connector conductive ring is electrically connected to the adjacent one through the elastic member.
  • a conductive ring sealing rubber sleeve is provided in the male connector conductive ring, and the conductive ring sealant sleeve is configured to seal the gap between the male connector conductive ring and the female connector conductive ring.
  • a positioning ferrule is provided outside the conductive ring of the male connector, and the positioning ferrule is configured to position the conductive ring of the male connector within the male connector.
  • the outer walls of the male connector conductive ring and the female connector conductive ring are both provided with sealing rings.
  • a second aspect of the present invention provides a method for making a cabled drill pipe.
  • the method is used to make the cabled drill pipe according to the above.
  • the method includes the following steps:
  • the fixed part is an expansion tube or a vulcanized layer.
  • the cable is fixed in the cable trough through the fixing part, and multiple cabled drill rods are connected in series through the connector and electrically connected to each other.
  • the fixing part provides a fluid channel for the cabled drill rod, so that the cable
  • the wire does not need to occupy fluid channels such as the water hole in the middle of the cabled drill pipe, achieving a large diameter of the drill pipe, providing a larger fluid space for drill pipe drainage and mud removal, and at the same time effectively solving the problem of surface and underground power supply during the drilling process. problems, improving stability and ensuring subsequent operations.
  • Figure 1 is a schematic structural diagram of the cabled drill pipe of the present invention
  • Figure 2 is a radial cross-sectional view of an embodiment of the cabled drill pipe of the present invention
  • Figure 3 is a radial cross-sectional view of another embodiment of the cabled drill pipe of the present invention.
  • Figure 4 is an axial cross-sectional view of the male connector in Figure 1;
  • Figure 5 is an axial cross-sectional view of the female connector in Figure 1;
  • Fig. 6 is an axial cross-sectional view of the male connector and the female connector in Fig. 1 being mated and connected.
  • the present invention provides a cabled drill rod.
  • the cabled drill rod has a hollow shaft 10 and connectors 50 respectively connected to both ends of the shaft 10.
  • the shaft 10 An axially extending cable trough 20 is provided on the inner wall of 10, and the fixed portion is formed around a fluid channel isolated from the cable trough 20. Both ends of the cable 21 are electrically connected to the corresponding connectors 50, so that they can pass through all When the connector 50 connects a plurality of cabled drill pipes in series, the cables 21 in adjacent cabled drill pipes are electrically connected to each other.
  • the cable 21 is fixed in the cable trough 20 through the fixing part, and a plurality of cabled drill pipes are connected in series through the connector 50 and electrically connected to each other. It avoids the cable 21 from occupying the inner diameter space of the cabled drill pipe and does not occupy the water hole channel in the middle of the cabled drill pipe, thereby realizing a large diameter of the drill pipe and providing drainage and mud drainage and drilling fluid passage for the drill pipe. It provides a larger space, while effectively solving the problem of surface and underground power supply during the drilling process, improving stability and ensuring subsequent operations.
  • the cable groove 20 is formed by a rubber piece that fits the inner wall of the shaft 10 , and the fixing portion fits or is integrally formed on the inner side of the rubber piece away from the shaft 10 and secures the cable groove 20 .
  • the cable 21 is enclosed in the cable trough 20 .
  • the fixing part in order to overcome the problem of arranging cables in the water hole of the drill pipe in traditional cabled drill pipes and occupying the space for flowing mud and drilling fluid, the fixing part is configured so that the cable groove 20 fits the rod The inner wall surface of the body 10, and the fixed portion is surrounded by a fluid channel isolated from the cable trough 20. There are no cables or other obstacles that obstruct the fluid in the fluid channel, so that the cabled drill pipe can be drained and sludged. Hetong drilling fluid and the like provide a larger fluid channel, and the mud drilling fluid and the like are isolated from the cable 21 through the fixing part, making the cable 21 safer when transmitting power.
  • the cable 21 is fixed on the inner wall of the cabled drill pipe by using the cable trough 20 formed of rubber parts, and the cables 21 are arranged along the cable trough 20, so
  • the cable trough 20 can resist impact force, protect the impact of the fixed part on the cable 21 when closing the cable 21, and at the same time ensure that the cable 21 is connected to the fixed part and the cabled part.
  • the inner walls of the drill pipe are relatively insulating and flame retardant, which reduces the failure rate of the cable 21 and thereby extends the service life of the cabled drill pipe.
  • the cable 21 in each of the cabled drill rods can be connected in series with the adjacent cabled drill rods through the connector 50, so that the cables in the adjacent cabled drill rods can
  • the cables 21 are electrically connected to each other for underground power transmission, and the adjacent connectors 50 are electrically connected to each other, thereby improving the stability of power transmission.
  • the fixing part is an expansion tube 30.
  • the expansion tube 30 is configured to fix the cable 21 in the cable trough 20 after being supported by expansion. middle.
  • the expansion tube technology is used to expand the expansion tube 30 and closely adhere to the cable groove 20 on the inner wall of the cabled drill pipe, and seal the cable 21 therein, thereby achieving Fixing and sealing of the cable 21.
  • the expansion tube 30 is preferably a metal thin-walled tube, and the connector 50 serves as a transition part and uses a variable-diameter expansion cone or hydraulic expansion to complete expansion together with the shaft 10 .
  • the inner wall of the expansion pipe 30 is provided with an insulating layer to ensure that the water hole of the cabled drill pipe is insulated from the expansion pipe 30 when draining mud and drilling fluid, thereby ensuring that the expansion pipe is 30
  • the cable 21 enclosed in the cable trough 20 is insulated from the water hole of the cabled drill pipe.
  • the fixing part is a vulcanized layer 40.
  • the cable 21 is fixed in the cable trough 20 through the vulcanized layer 40.
  • the cable 21 is first inserted into the cable trough 20 and positioned through the mold tooling, leaving a certain gap between the mold tooling and the cable trough 20, and the rubber to be vulcanized and the vulcanizing agent are The vulcanized layer 40 is generated by reaction in the joint injection gap, so that the cable 21 is fixed in the cable trough 20 through the vulcanized layer 40 .
  • nitrile rubber can be used, which has excellent oil resistance, high wear resistance, good heat resistance, strong adhesion, and low cost. , can be used in drilling conditions with ambient temperatures below 120°C; hydrogenated nitrile rubber (HNBR) can also be used, which is a hydrogenated product of nitrile rubber and has good oil resistance, ozone resistance, wear resistance and chemical resistance. It is corrosive and has good compression permanent deformation, heat resistance and low temperature resistance. It can be used in drilling conditions in a variety of environments.
  • fluorine rubber can also be used for high temperature underground environments. This rubber is resistant to high temperature, oil and low temperature.
  • Chemical corrosion and oxidation resistant special rubber can be used for long-term use at high temperatures of 250°C and short-term use at ultra-high temperatures of 300°C.
  • the tensile strength of the vulcanized rubber after vulcanization is 7.0 to 17.5MPa, and the elongation is 150%. ⁇ 300%, weather resistance, ozone resistance, excellent electrical insulation properties, and lower air permeability than other rubbers.
  • the connector 50 includes a male connector 51 and a female connector 52 respectively connected to both ends of the rod body 10, such as As shown in FIG. 6 , the male connector 51 can be detachably connected to the female connector 52 of the adjacent wired drill pipe to connect two adjacent wired drill pipes in series. According to the depth of drilling, multiple cabled drill pipes are quickly connected in series to realize the transmission of electrical signals while draining mud and drilling fluid from the drill pipes.
  • the outer surface of the male connector 51 has external threads 511
  • the inner surface of the female connector 52 has an inner surface that can be connected with
  • the external thread 511 matches the internal thread 521 so that the female connector 52 can be detachably connected to the male connector 51 of the adjacent cabled drill pipe.
  • the female connector 52 is provided with a female connector conductive ring 522 , and the female connector conductive ring 522 is detachably connected to one end of the shaft 10 and connected with the cable 21 contact.
  • the male connector 51 is provided with a male connector conductive ring 512 , and the male connector conductive ring 512 is detachably connected to an end of the shaft 10 away from the female connector 52 and in contact with the cable 21 .
  • the female connector conductive ring 522 and the male connector conductive ring 512 are in contact with the cable 21 in the shaft 10, thereby ensuring that the two adjacent cabled drill pipes are connected in series. electrically connected to each other.
  • parts of the female connector conductive ring 522 and the male connector conductive ring 512 except for the contact end surfaces are spray-coated with insulating materials, such as ceramics, insulating paint, etc.
  • the male connector conductive ring 512 and the female connector conductive ring 522 are both provided with connectors 53 so that the male connector 51 and the female connector 52 are detachably connected to the The shaft 20 enables the female connector conductive ring 522 and the male connector conductive ring 512 to be quickly replaced, which facilitates maintenance.
  • an elastic member 523 is provided at one end of the female connector conductive ring 522, and the elastic member 523 elastically acts on The female connector conductive ring 522 is electrically connected to the male connector conductive ring 512 of the adjacent cabled drill pipe through the elastic member 523, thereby realizing mutual connection. Reliable contact to form a stable power and information transmission channel.
  • the male connector conductive ring 512 is provided with a conductive ring sealant sleeve 513 , and the conductive ring sealant sleeve 513 is configured to seal between the male connector conductive ring 512 and the female connector conductive ring 522 .
  • the conductive ring sealing rubber sleeve 513 ensures that the gap between the male connector conductive ring 512 and the female connector conductive ring 522 is sealed. , to prevent drilling fluid, etc. from entering the conductive ring and causing leakage.
  • a positioning ferrule 514 is provided on the outside of the male connector conductive ring 512.
  • the positioning ferrule 514 is configured to position the male connector conductive ring 512 within the male connector 51. position to prevent the male connector conductive ring 512 from moving axially due to force, resulting in the two conductive rings not being in contact or causing collision damage to the conductive rings.
  • sealing rings 54 are provided on the outer walls of the male connector conductive ring 512 and the female connector conductive ring 522 to prevent leakage and potential production safety hazards.
  • Another aspect of the present invention provides a method for manufacturing a cabled drill rod.
  • the method is used to manufacture the cabled drill rod according to the above.
  • the method includes the following steps:
  • the cable 21 is fixed in the cable trough 20, and a plurality of cabled drill rods are connected in series through the connector 50 and electrically connected to each other, thereby avoiding the problem of
  • the cable 21 occupies the inner diameter space of the cabled drill pipe, and does not need to occupy the water hole channel in the middle of the cabled drill pipe.
  • the large central diameter of the cabled drill pipe is produced, which provides a convenient space for draining mud and drilling fluid from the drill pipe.
  • the larger space also effectively solves the problem of surface and underground power supply during the drilling process, improves stability and guarantees subsequent operations.
  • the fixed part is the expansion tube 30 or the vulcanization layer 40 .
  • the expansion tube technology is used to expand the expansion tube 30 and then closely adhere to the cable groove 20 on the inner wall of the cabled drill pipe, and seal the cable 21 therein, thus, the cable 21 is fixed and sealed.
  • the cable 21 is inserted into the cable trough 20 and positioned through the mold tooling, leaving a certain gap between the mold tooling and the cable trough 20, and the rubber to be vulcanized is placed with the cable trough 20.
  • the vulcanizing agent is co-injected into the gap and reacts to generate the vulcanizing layer 40 , thereby fixing the cable 21 in the cable trough 20 through the vulcanizing layer 40 .
  • the cabled drill pipe of the present invention can be realized by modifying ordinary drill pipes.
  • any combination of various embodiments of the present invention can also be carried out. As long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Remote Sensing (AREA)
  • Geophysics (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Earth Drilling (AREA)

Abstract

La présente demande concerne le domaine des forages pétroliers et de la production pétrolière. Sont divulgués une tige de forage avec câble et son procédé de fabrication. La tige de forage avec câble comprend un corps de tige creux (10) et des connecteurs (50) respectivement reliés à deux extrémités du corps de tige (10), une paroi interne du corps de tige (10) étant dotée d'une gouttière de câble (20) s'étendant dans une direction axiale ; la gouttière de câble (20) est dotée d'un câble (21) fixé par une partie de fixation ; la partie de fixation est conçue pour amener la gouttière de câble (20) à s'ajuster avec une face de paroi interne du corps de tige (10), et la partie de fixation forme, de manière environnante, un passage de fluide isolé de la gouttière de câble (20) ; et deux extrémités du câble (21) sont électriquement connectées aux connecteurs correspondants (50), respectivement, de telle sorte que lorsqu'une pluralité de tiges de forage avec câbles sont connectées en série au moyen des connecteurs (50), des câbles (21) dans des tiges de forage adjacentes avec câbles sont électriquement connectés les uns aux autres. Dans la présente demande, le câble est fixé dans la gouttière de câble, la pluralité de tiges de forage avec câbles sont connectées en série au moyen des connecteurs et connectées électriquement les unes aux autres, et la partie de fixation fixe le câble et fournit le passage de fluide, de telle sorte que le câble ne peut pas occuper un espace de diamètre interne d'une tige de forage avec câble, un espace plus grand est prévu pour des passages de fluide tels qu'un passage d'eau et les problèmes d'alimentation électrique de masse et de fond de trou et de communication pendant un processus de forage sont résolus.
PCT/CN2022/127948 2022-06-20 2022-10-27 Tige de forage avec câble et son procédé de fabrication WO2023245944A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210698154.7A CN117307052A (zh) 2022-06-20 2022-06-20 有缆钻杆及其制作方法
CN202210698154.7 2022-06-20

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WO2023245944A1 true WO2023245944A1 (fr) 2023-12-28

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