CN110748337B - Coiled tubing measurement while drilling tool - Google Patents
Coiled tubing measurement while drilling tool Download PDFInfo
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- CN110748337B CN110748337B CN201810730599.2A CN201810730599A CN110748337B CN 110748337 B CN110748337 B CN 110748337B CN 201810730599 A CN201810730599 A CN 201810730599A CN 110748337 B CN110748337 B CN 110748337B
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- Prior art keywords
- cable
- plug
- resistant cylinder
- directional
- centralizer
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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
- 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
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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
- E21B17/023—Arrangements for connecting cables or wirelines to downhole devices
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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
- E21B17/16—Drill collars
Abstract
The invention provides a coiled tubing measurement while drilling tool, which comprises: the cable switching nipple comprises a cable switching drill collar, a cable switching compression cylinder and a first centering component are arranged in the cable switching drill collar, and the armored cable is connected with a copper column for connection through the cable switching compression cylinder and the first centering component; and the directional nipple joint while drilling comprises a directional drill collar while drilling, one end of the directional drill collar is fixedly connected with the cable adapter joint, a connection pressure-resistant cylinder, a second centering component and a directional probing pipe pressure-resistant cylinder are arranged in the directional drill collar while drilling, the circuit adapter plug is arranged in the connection pressure-resistant cylinder, one end of the circuit adapter plug is connected with the copper column and can rotate relatively, the other end of the circuit adapter plug is connected with a circuit board arranged in the directional probing pipe pressure-resistant cylinder through the circuit adapter cylinder, and the connection pressure-resistant cylinder is connected with the directional probing pipe pressure-resistant cylinder through the second centering component. The directional probe tube in the tool is firmly connected with the cable, the sealing performance is good, and the cable is not easy to knot and damage.
Description
Technical Field
The invention belongs to the technical field of coiled tubing tools for petroleum and gas drilling, and particularly relates to a coiled tubing measurement while drilling tool.
Background
In recent years, coiled tubing is increasingly widely used in well workover, sidetracking, underbalanced drilling, deep well drilling and other operations in oil and gas field exploration and development, and is one of the important development directions of the current drilling technology. Compared with the conventional drilling operation, the coiled tubing drilling has the advantages of low cost, short operation period, suitability for drilling under an underbalance condition, small occupied area of equipment, easiness in installation and disassembly, good maneuverability and wide application at home and abroad. However, the coiled tubing drilling technology is mainly mastered in foreign oil clothing companies, and is still in the research and development stage at home. In the process of drilling a continuous oil pipe well, well deviation, direction, tool face and other data need to be monitored in real time, and electric energy and data are transmitted up and down through a built-in cable. Therefore, when the coiled tubing drilling tool is designed, not only the installation of the directional probe tube but also the passing, connection and sealing of the built-in cable in the tool need to be considered. Meanwhile, when the cable is connected with the directional probe tube, the cable cannot be knotted and damaged due to the rotation of the external drill collar. At present, a built-in cable of the coiled tubing is a double-layer steel wire armored cable, the insulation sealing structure of the built-in cable is complex and unreliable, and when a drilling tool is subjected to strong impact, vibration and distortion in a high-temperature and high-pressure environment underground, the connection and sealing between the cable and the directional probe tube are prone to failure, and the tool is damaged.
Disclosure of Invention
Aiming at part or all of the technical problems in the prior art, the invention provides a coiled tubing measurement while drilling tool, wherein a directional probe in the tool is firmly connected with a cable, the sealing performance is good, and the cable is not easy to knot and damage.
In order to achieve the above object, the present invention provides a coiled tubing measurement while drilling tool, comprising:
the cable switching nipple comprises a cable switching drill collar, a cable switching compression-resistant cylinder and a first centering component for fixing the cable switching compression-resistant cylinder are arranged in the cable switching drill collar, and an armored cable is connected with a copper column for connection through the cable switching compression-resistant cylinder and the first centering component; and
the directional nipple joint while drilling comprises a directional drill collar while drilling, one end of the directional drill collar is fixedly connected with the cable adapter joint, a connection pressure-resistant cylinder, a second centering component and a directional probing pipe pressure-resistant cylinder are arranged in the directional drill collar while drilling, a circuit adapter plug is arranged in the connection pressure-resistant cylinder, one end of the circuit adapter plug is connected with a copper column and can rotate relatively, the other end of the circuit adapter plug is connected with a circuit board arranged in the directional probing pipe pressure-resistant cylinder through the circuit adapter plug, and the connection pressure-resistant cylinder and the directional probing pipe pressure-resistant cylinder are connected through the second centering component.
In the invention, the cable arranged in the cable switching short section is connected with the copper column by arranging the two parts of the cable switching short section and the directional short section while drilling, then the copper column is connected with the circuit board arranged in the directional short section while drilling, and the cable and the copper column are arranged in the cable switching pressure-resistant cylinder and the first righting component and are connected with the circuit board arranged in the directional pressure-resistant cylinder by the circuit switching plug arranged in the connecting pressure-resistant cylinder, so that the directional probe tube and the cable are firmly connected, the sealing performance is better, and the cable is not easy to knot and damage because the circuit switching plug and the copper column can rotate relatively when being connected.
In one embodiment, the first centering assembly comprises a first upper centering device, a first centering device locking sleeve and a centering plug which are arranged in the cable transition drill collar, the first centering device locking sleeve is in threaded connection with the cable transition drill collar, the upper end of the first upper centering device is abutted against the first centering device locking sleeve, the lower end of the centering plug is abutted against the lower end face of an inner cavity of the cable transition drill collar, the lower end of the cable transition pressure-resistant cylinder is abutted against the centering plug, the upper end of the cable transition pressure-resistant cylinder penetrates through the first upper centering device, and the shoulder of the upper end of the cable transition pressure-resistant cylinder is abutted against the lower end face of the first upper centering device.
In one embodiment, a conical sealing rubber sleeve and a cable locking sleeve are arranged in the cable transfer compression-resistant cylinder, and the armored cable is sequentially communicated with a copper column connected in the centering plug from the first centering device locking sleeve, the first upper centering device, the conical sealing rubber sleeve, the cable locking sleeve and the insulating connecting assembly.
In one embodiment, the cable gland has a plurality of angled teeth on its inner surface which engage the sheath of the armored cable when installed.
In an embodiment, right the plug including the sealing connector who connects gradually, right plug body and long contact pin structure, sealing connector is to first on right the ware direction and extend, long contact pin structure is to following the directional nipple joint direction of boring and extending, and the copper post that the parcel has insulating skin passes sealing connector to following the directional nipple joint direction of boring and extends and switch on with establishing the circuit adapter plug who is connected in the withstand voltage section of thick bamboo.
In one embodiment, insulating coupling assembling is including establishing the copper post insulating sheath of the cable core insulating cover, parcel copper post at armoured cable copper core end and establishing screw locking cover and the clamp ring in the cable core insulating cover outside, the screw locking cover establish between sealing connector and clamp ring and with cable switching withstand voltage section of thick bamboo threaded connection.
In one embodiment, a disc spring assembly is arranged between one end face of the thread locking sleeve and the compression ring, a gasket disc spring assembly is arranged between the other end face of the thread locking sleeve and the sealing connector, and the compression ring is connected with the cable locking sleeve and the cable sheath through fasteners.
In one embodiment, the material of one or more of the cable lock sleeve, clamp ring, bolt, disc spring, thread lock sleeve, gasket disc spring assembly is non-magnetic metal.
In one embodiment, the upper end of the copper column is provided with an annular conductive groove, and the copper core of the armored cable is conducted with the copper column through the conductive groove.
In an embodiment, the second centering assembly comprises a second upper centralizer, a second centralizer locking sleeve and a lower centralizer, the connection pressure-resistant cylinder sequentially penetrates through the second centralizer locking sleeve and the second upper centralizer to be in sealing connection with the directional probe pressure-resistant cylinder, one end of the directional probe pressure-resistant cylinder penetrates through the second upper centralizer to be in sleeved connection with the pressure-resistant cylinder, and the other end of the directional probe pressure-resistant cylinder is connected in the lower centralizer and sealed through a plug.
In one embodiment, the circuit adapter plug is arranged at the small-diameter end connected with the pressure-resistant cylinder, the front end of the circuit adapter plug is provided with a plug-in slot communicated with the copper column, the rear end of the circuit adapter plug is directly communicated with the front end of the circuit adapter column, and the rear end of the circuit adapter column is connected with a circuit board arranged in the pressure-resistant cylinder of the directional probe tube through a lead.
In one embodiment, the outer surfaces of the circuit adapter plug and the circuit adapter post are sleeved with plug insulating sleeves, and the outer sides below the plug insulating sleeves are connected with hollow adapter post insulating sleeves through insulating pads.
Compared with the prior art, the coiled tubing measurement while drilling tool has the advantages that:
the tool for measuring the coiled tubing while drilling is divided into a cable switching short section and a directional short section while drilling, wherein the cable switching short section connects a cable core of an armored cable with a copper column convenient to plug, and a directional probe tube comprising a circuit board is arranged in the directional short section while drilling. When two nipple joints are screwed together, the copper column is inserted into the insertion groove at one end of the directional probe tube and can rotate relative to the directional probe tube, so that the armored cable can rotate relative to the directional probe tube, and the cable is prevented from being knotted and damaged when the nipple joints are connected. In addition, because the two short sections are respectively provided with the multilayer seal, the cable is firm in connection, reliable in structure and better in sealing performance.
Drawings
Preferred embodiments of the present invention will be described in detail below with reference to the attached drawing figures, wherein:
fig. 1 is an overall sectional view of an embodiment of the present invention.
Fig. 2 is a cross-sectional view of a cable transition sub of an embodiment of the present invention.
Fig. 3 is an enlarged view of a partially enlarged region a in fig. 2 of the present invention.
FIG. 4 is a cross-sectional view of a directional while drilling sub of an embodiment of the invention.
Fig. 5 is a schematic structural view of a centralizer of an embodiment of the present invention.
Figure 6 is a schematic structural diagram of a centralizing plug in accordance with an embodiment of the invention.
FIG. 7 is an enlarged schematic view of a pointed beveled tooth of an embodiment of the present invention.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
In order to make the technical solutions and advantages of the present invention more apparent, the following describes exemplary embodiments of the present invention in further detail with reference to the accompanying drawings. It is clear that the described embodiments are only a part of the embodiments of the invention, and are not exhaustive of all embodiments. And the embodiments and features of the embodiments may be combined with each other without conflict.
The inventor notices in the invention process that when the existing cable is connected with the directional probe tube, the cable is easy to be damaged by knotting due to the rotation of the external drill collar.
In view of the above disadvantages, an embodiment of the present invention provides a coiled tubing measurement while drilling tool, which is described in detail below.
FIG. 1 shows one embodiment of the coiled tubing measurement while drilling tool of the present invention. In this embodiment, the coiled tubing measurement while drilling tool of the present invention mainly comprises two short joints: the cable switching nipple 10 and the directional nipple 20 while drilling are fixedly connected through a threaded structure. The cable adapter nipple 10 mainly includes a cable adapter collar 101, a cable adapter pressure-resistant cylinder 102 arranged in the cable adapter collar 101, an armored cable 30 and a first centralizing component. The directional while drilling nipple 20 mainly comprises: the directional drill collar 201 while drilling, and a connection pressure-resistant cylinder 204, a second centralizing component, a directional probe pressure-resistant cylinder 205 and a circuit board 60 which are arranged in the directional drill collar 201 while drilling. The armored cable 30 passes through the cable transition pressure-resistant cylinder 102 and the first centralizing component from one end of the cable transition short section 10 and is connected with (including conduction at) one end of the copper column 40 which is arranged at the other end of the cable transition short section 10 and used for connection. The other end of the copper column 40 extends out of the other end face of the cable adapter sub 10 and is connected (including conducted) with a circuit board 60 arranged in the directional probe pressure-resistant cylinder 205 through a circuit adapter plug 50.
In one embodiment, as shown in FIG. 1, the cable transition pressure resistant cylinder 102 is located in the mud channel 109 in the middle of the cable transition collar 101 and functions to secure the armored cable 30 and facilitate transition between the cable core 301 and the directional probe pressure resistant cylinder 205. The cable relay compressive barrel 102 is made of a high-strength non-magnetic metal, such as non-magnetic stainless steel, titanium alloy, or beryllium copper.
In one embodiment, as shown in FIG. 2, the first centralizer assembly generally comprises a first upper centralizer 104 disposed within the inner cavity of the cable transition collar 101, a first centralizer lock sleeve 103, and a centralizer plug 105. The cable transfer compression-resistant cylinder 102 is fixed in the center of the cable transfer drill collar 101. Arranged on the upper side of the cable transit crush cylinder 102 is a first upper centralizer 104. The upper side of the first upper centralizer 104 is provided with a first centralizer locking sleeve 103, the first centralizer locking sleeve 103 is provided with external threads which are matched with the internal threads on the cable adapter drill collar 101, and the first upper centralizer 104 can be screwed into the cable adapter drill collar 101. When the first centralizer lock sleeve 103 is screwed down, since the outer surface of the upper end of the cable transfer compression-resistant cylinder 102 is provided with a shoulder, after the end head of the upper end of the cable transfer compression-resistant cylinder 102 passes through the centralizer inner ring 1042 of the first upper centralizer 104, the lower surface of the first upper centralizer 104 abuts against the shoulder of the cable transfer compression-resistant cylinder 102.
In addition, a convex part extending towards the first centralizer lock sleeve 103 is arranged in the middle of the upper end of the first upper centralizer 104, the convex part can increase the contact area between the first upper centralizer 104 and the cable transfer compression-resistant cylinder 102, and a lead angle is arranged on the outer surface of the convex part. When the cable transit crush can 102 is connected, the upper end of the cable transit crush can protrudes from the convex end of the protruding portion of the first upper centralizer 104, which can increase the contact area with the armored cable 30, and the convex end is also provided with a chamfer. The two guide angles are respectively arranged, so that the resistance of slurry passing through can be reduced.
As shown in fig. 5, the first upper centralizer 104 is mainly composed of a centralizer inner ring 1042, a centralizer outer ring 1041, and a support rib 1043 connected between the centralizer inner ring 1042 and the centralizer outer ring 1041. The inner ring 1042 of the centralizer is formed with a cable passage 1045, and a plurality of first slurry holes 1044 are divided between the inner ring 1042 of the centralizer and the outer ring 1041 of the centralizer by a support rib 1043. The first upper centralizer 104 is sleeved at a position with a slightly smaller diameter on the upper side of the cable transfer compression-resistant cylinder 102, and the maximum outer diameter (i.e. the outer diameter of the centralizer outer ring 1041) of the first upper centralizer is the same as the inner diameter of the cable transfer drill collar 101, so that a supporting effect is achieved.
As shown in fig. 1, provided on the underside of cable transition crush cans 102 are centering plugs 105. As shown in fig. 6, the centralizing plug 105 is mainly comprised of four parts: centralizing the plug body 1051, long prongs 1053, and sealing connector 1052. The centralizing plug body 1051 mainly comprises an inner ring, an outer ring and a support rib connecting the inner ring and the outer ring, and the space between the inner ring and the outer ring is divided into a plurality of second slurry holes 1054 by the support rib. Long pintle 1053 extends downward from the inner ring lower surface that rights plug body 1051, sealing joint 1052 extends upward from the inner ring upper surface that rights plug body 1051, and the middle part that rights plug body 1051 is equipped with the copper column passageway 1055 that runs through sealing joint 1052, rights plug body 1051 and long pintle 1053.
In addition, the sealing connector 1052, the centering plug body 1051 and the long insert pin 1053 are coaxially arranged, and the outer diameter of the centering plug body 1051 (i.e. the outer diameter of the outer ring) is the same as the inner diameter of the cable adapter drill collar 101, so that a supporting effect is achieved, and the long insert pin 1053 and the sealing connector 1052 are better ensured to be positioned in the center of the cable adapter drill collar 101. The cable transition pressure-resistant cylinder 102 is sleeved on the sealing connector 1052 of the centralizing plug 105, the cable transition pressure-resistant cylinder 102 is coaxial with the sealing connector 1052, and a sealing ring is arranged between the cable transition pressure-resistant cylinder 102 and the sealing connector 1052 for sealing, so that mud is prevented from entering the cable transition pressure-resistant cylinder 102.
In a preferred embodiment, the first upper centralizer 104 and the centralizing plug 105 are each provided with three support ribs. The three supporting ribs form an angle of 120 degrees in pairs, and divide the slurry channel into three slurry holes for slurry to flow through.
In a preferred embodiment, the first upper centralizer 104, the first centralizer lock sleeve 103 and the centralizing plug 105 are fabricated from a high strength non-magnetic metal, such as non-magnetic stainless steel, titanium alloys or beryllium copper.
In a preferred embodiment, as shown in FIG. 2, the inner surface of the lower end of the cable adapter collar 101 is formed with a shoulder that acts as a stop to prevent downward movement of the centering plug 105. The cable transition compression sleeve 102 contacts the upper end face of the centralizing plug 105, and compresses the centralizing plug 105 downwards. An annular chamfer is arranged on the upper end face of the outer ring of the centralizing plug 105, and the annular chamfer has the function of reducing the resistance of slurry during passing and reducing the scouring of the slurry on the centralizing plug 105.
In one embodiment, as shown in fig. 1, 2 and 3, armored cable 30 is threaded centrally from cable transition crush can 102. A conical sealant sleeve 106 is provided in the radial direction between the armored cable 30 and the cable transition pressure resistant cylinder 102. The tapered packing rubber 106 is used to prevent mud from entering the cable transition pressure resistant cylinder 102. The tapered packing rubber 106 is made of a compressible deformable material, such as high temperature resistant rubber, polymer plastic, etc. The section of the conical sealing rubber sleeve 106 is a conical frustum with a hole in the middle, the diameter of the upper side of the conical sealing rubber sleeve is smaller, and the inclined angle of the conical sealing rubber sleeve is the same as the inclined angle of the conical hole on the inner side of the cable transfer compression-resistant cylinder 102. The tapered sealant sleeve 106 deforms as a result of the compression, with its inner surface abutting the sheath of the armored cable 30 and its outer surface abutting the inner wall of the cable transition pressure barrel 102, thereby forming a first seal for the armored cable 30.
As shown in fig. 2 and 3, the lower side of the conical sealing rubber sleeve 106 is provided with a cable locking sleeve 107 along the axial direction, and the cable locking sleeve 107 is located between the armored cable 30 and the cable transit compression-resistant cylinder 102. The cable locking jacket 107 has a circular tube shape and triangular slanted angled teeth 1071 (see fig. 3) are formed on the inner wall thereof, and the slanted angled teeth 1071 are embedded into the inner portion of the sheath of the armored cable 30 to tightly grip the armored cable 30 and prevent relative movement between the armored cable 30 and the cable locking jacket 107. The cable locking sleeve 107 is in clearance fit with the cable transfer compression-resistant cylinder 102, and a sealing ring is arranged in a groove on the outer surface of the cable locking sleeve 107. The pointed angled teeth 1071 are embedded into the sheath of the armored cable 30 and the groove seal provided on the outer surface of the cable jacket 107 is the second seal for the armored cable 30. The second seal prevents mud from entering and causing instrument damage when the first seal fails.
As shown in fig. 7, the upper side 1072 of each sharp angled tooth 1071 on the inner surface of the cable locking jacket 107 is longer, the lower side 1073 is shorter, and the axial included angle R between the lower side 1073 and the cable locking jacket 107 is 60-100 °, which is convenient for the cable locking jacket 107 to be sleeved on the armored cable 30 from the lower side. The pointed angled teeth 1071 prevent the armored cable 30 from moving upward when the cable locking sleeve 107 is fixed in the cable transit crush barrel 102 after the cable locking sleeve 107 is fitted over the armored cable 30.
As shown in fig. 2 and 3, the cable sheath of the armored cable 30 is peeled off from the lower side of the cable locking jacket 107, and the cable core 301 on the back side is exposed. The cable sheath is bent and pressed against the lower end of the cable gland 107 by a clamp ring 405, and then tightened by bolts 406 so that the cable sheath is tightly fixed to the cable gland 107. The excess cable sheath is then trimmed to ensure that it fits within the cable transition crush cans 102. The lower side of the cable core 301 is connected to the copper column 40, and the upper end of the copper column 40 is provided with a conductive groove for plugging, so that the cable core 301 is inserted into the conductive groove at the upper end of the copper column 40 during connection and is welded together, so that the cable core 301 and the copper column are connected reliably all the time, and the electrical conductivity is good. The outer side of the cable core 301 is wrapped with a cable core insulation cover 404 to ensure that the cable core 301 is insulated from the outside. The copper column 40 is sleeved with a copper column insulating skin 401 and a copper column insulating skin 402, so that the copper column 40 is ensured to be insulated from the outside. The cable core insulating sleeve 404, the copper column insulating sheath 401 and the copper column insulating sheath 402 are made of plastic or rubber with a metal shielding net in the middle, and can insulate and shield interference of external noise on transmitted signals in the cable core 301. The cable core insulating sleeve 404 and the copper column insulating sheath 402 have the same outer diameter, so that the clamp ring 405, the disc spring 407, the thread locking sleeve 108, the gasket disc spring assembly 403 and the like can be conveniently sleeved.
As shown in fig. 2 and 3, after the tapered sealant 106, the cable locking sleeve 107, the armored cable 30, the clamp ring 405, and the like are installed in the cable transit compression resistant cylinder 102, the disc spring 407 is placed, and then the cable transit compression resistant cylinder is compressed by the thread locking sleeve 108. The thread locking sleeve 108 has external threads and can be engaged with internal threads on the inner wall of the cable-connecting pressure-resisting cylinder 102, so that the tapered sealing rubber sleeve 106, the cable locking sleeve 107 and the like are fixed in the cable-connecting pressure-resisting cylinder 102. The middle part of the lower end of the thread locking sleeve 108 is provided with an inner hexagonal hole, so that an inner hexagonal wrench can be conveniently placed in the thread locking sleeve during screwing. The disc spring 407 here has two functions: firstly, prevent that thread lock sleeve 108 is not hard up, rely on the friction between its elastic force increase screw thread, secondly adjust the clearance between clamp ring 405 and the thread lock sleeve 108, when the instrument is worked in the pit the vibration that reduces cable lock sleeve 107 and armoured cable 30. On the underside of the clamp sleeve 108 is a sealing connector 1052, and between the clamp sleeve 108 and the sealing connector 1052 is a washer-disc spring assembly 403, in which the disc spring and the washer are fitted over the cable core insulation sleeve 404 and the copper column insulation sheath 402. The disc spring also has the functions of preventing looseness, adjusting clearance and reducing vibration. The function of the gasket here is to prevent the disc spring from failing by sinking into the apertures in the locking sleeve 108 and seal connector 1052. And a disc spring 801 between the copper column insulating sheath 401 and the sealing connector 1052 is used for adjusting the gap and damping vibration.
In a preferred embodiment, the cable locking sleeve 107, clamp ring 405, bolt 406, disc spring 407, threaded locking sleeve 108, washer disc spring assembly 403 are all made of non-magnetic metal, such as non-magnetic stainless steel, beryllium copper, etc.
In one embodiment, as shown in fig. 2 and 3, the copper post 40 and copper post insulating skin 401 are inserted into the copper post channel 1055 in the middle of the centralizing plug 105, and the copper post insulating skin 401 separates the copper post 40 from the centralizing plug 105, preventing both from contacting the conductive contacts. After the copper column insulating sheath 401 is sleeved on the copper column 40, the outer diameter of the copper column insulating sheath 401 is slightly larger than the inner diameter of the copper column channel 1055 in the middle of the righting plug 105, and because the copper column insulating sheath 401 has certain compressibility, after the copper column 40 and the copper column insulating sheath 401 are sleeved in the copper column channel 1055 in the middle of the righting plug 105, the copper column insulating sheath 401 is tightly pressed, and the copper column 40, the copper column insulating sheath 401 and the inner hole wall of the righting plug 105 are tightly combined. The copper column insulating skin 401 is made of insulating rubber or plastic, and can play roles of insulation, shock absorption, sealing and the like.
In one embodiment, as shown in fig. 1 and 2, on the underside of the cable transition collar 101, the long insert 1053, the copper cylinder insulation 401, and the copper cylinder 40 all exit the mud channel 109, exposing the pin face, which facilitates installation. When the cable adapter sub 10 is installed on the directional while drilling sub 20, the copper column 40 and the like can be inserted into the connection pressure-resistant cylinder 204, and then the drill collars of the two sub are connected. On the underside of the cable transition collar 101, the copper post 40 is exposed more than the long stinger 1053, which facilitates insertion of the copper post 40 into the circuit transition plug 50 of the directional while drilling sub 20. The long insertion needle 1053 is in clearance fit with the connecting pressure resistant cylinder 204, and a sealing ring is arranged between the long insertion needle 1053 and the connecting pressure resistant cylinder 204 to prevent mud from entering the connecting pressure resistant cylinder 204.
In one embodiment, as shown in fig. 4, the circuit framework 602 is installed inside the directional probe pressure-resistant cylinder 205, and a sealing ring is installed between the circuit framework and the directional probe pressure-resistant cylinder 205, which can reduce the vibration of the circuit framework 602 and prevent the circuit framework 602 from colliding with the inner wall of the directional probe pressure-resistant cylinder 205. The circuit boards 601 are mounted on the circuit framework 602, and the two circuit boards 601 can be connected through a wire which passes through a through hole of a circuit board connecting block on the circuit framework 602. The signal line on the circuit board 601 passes through the through hole in the signal line connection block 210 on the circuit framework 602 and is connected to the circuit transfer column 70. The plug 207 is provided with threads, the plug 207 is screwed at the lower end of the directional probe pressure-resistant cylinder 205, and a sealing ring is arranged between the plug 207 and the directional probe pressure-resistant cylinder 205 to prevent mud from entering the interior of the directional probe pressure-resistant cylinder 205. When the lower side of the directional probe pressure-resistant cylinder 205 is externally connected with other equipment, the plug 207 can be detached to connect with the adapter of other equipment. An elastic ring with elasticity is arranged in the contact area of the lower end of the circuit framework 602 and the directional probe pressure-resistant cylinder 205, so that the vibration of the circuit framework 602 is reduced when the instrument works underground, and the lower end of the circuit framework 602 is prevented from colliding with the directional probe pressure-resistant cylinder 205. The gasket 416 is arranged on the upper side of the circuit framework 602, the gasket 416 is made of nonmagnetic stainless steel, an elastic ring is arranged between the gasket 416 and the circuit framework 602, and the gasket 416 compresses and deforms the elastic ring, so that the vibration of the circuit framework 602 can be reduced, and a circuit board is protected. A circuit transition post 70 is mounted in the middle of the gasket 416 and in the through-hole of the signal line connection block 210, and the circuit transition post 70 is made of a high-conductivity metal, such as copper, silver, or the like. The outer side of the circuit switching column 70 is wrapped with a switching column insulating sleeve 417 and an insulating pad 209, so that the circuit switching column 70 is insulated from the outside. The patch post insulating sleeve 417 is made of rubber or plastic, and after the signal line led out from the circuit board 601 is connected to the circuit patch post 70, the patch post insulating sleeve 417 can also play a role in protecting the signal line. The lower end of the circuit transfer column 70 is in a thin cylindrical shape, the upper end of the circuit transfer column is in a thin disc shape, the lower end of the thin cylindrical shape is convenient for penetrating through a through hole of the signal line connecting block 210 to be connected with a signal line led out from the circuit board 601, and the thin disc can increase the contact area between the circuit transfer column 70 and the circuit transfer plug 50 and increase the reliability of electric conduction. The corresponding insulating pad 209 is also shaped like a circular column at one end and a circular disk at the other end to ensure the circuit transfer post 70 is insulated from the outside. The upper side of the circuit transfer column 70 is connected with the circuit transfer plug 50, the lower end of the circuit transfer plug 50 is in a thin disc shape and is in contact with the thin disc-shaped structure at the upper end of the circuit transfer column 70, and the conductive area can be increased. The outer side of the circuit patch plug 50 is wrapped by a plug insulating sleeve 208, and the plug insulating sleeve 208 is made of plastic or rubber with a shielding net in the middle, so that the circuit patch plug can insulate and shield interference of external noise on signals transmitted in the circuit patch plug 50. The middle part of the circuit adapter plug 50 is a solid cylinder, the upper end of the circuit adapter plug is provided with an insertion groove, the diameter of the insertion groove is slightly smaller than that of the copper column 40, and the circuit adapter plug and the copper column 40 form interference fit during connection. After the copper post 40 is inserted into the insertion groove at the upper end of the circuit adapter plug 50, the copper post 40 and the circuit adapter plug 50 are tightly attached together, thereby ensuring effective transmission of electrical signals. The circuit adapter plug 50 and the plug insulating sleeve 208 are inserted into the connecting pressure-resistant cylinder 204, and the plug insulating sleeve 208 has certain elasticity, so that the space between the circuit adapter plug 50 and the connecting pressure-resistant cylinder 204 can be filled up, and a certain shock absorption and sealing effect can be achieved. The lower end of the connecting pressure-resistant cylinder 204 is inserted into the directional probe pressure-resistant cylinder 205, and a sealing ring is arranged between the connecting pressure-resistant cylinder and the directional probe pressure-resistant cylinder 205 to prevent mud from entering the directional probe pressure-resistant cylinder 205.
In one embodiment, as shown in FIG. 4, the second centralizer assembly can be comprised primarily of a second upper centralizer 203, a second centralizer lock sleeve 202, and a lower centralizer 206. The directional probe pressure-resistant cylinder 205 is placed in a mud channel 211 in the middle of the directional drill collar 201 while drilling, and the diameter of the lower end of the directional probe pressure-resistant cylinder 205 is slightly smaller and is inserted in the middle of the lower centralizer 206. The lower centralizer 206 is similar in construction to the first upper centralizer 104 in that it has an outer diameter equal to the inner diameter of the mud channel 211, with three centralizing support ribs. The lower end face of the directional probe pressure-resistant cylinder 205 abuts against the shoulder of the inner cavity of the directional drill collar 201 while drilling. The upper side of the directional probe pressure-resistant cylinder 205 is provided with a second upper centralizer 203, and the second upper centralizer 203 compresses the directional probe pressure-resistant cylinder 205 through the lower end surface. The upper side of the second upper centralizer 203 is provided with a second centralizer locking sleeve 202, and the external thread of the second centralizer locking sleeve 202 is screwed on the internal thread of the directional drill collar 201 to compress the second upper centralizer 203. The connecting compression-resistant cylinder 204 is inserted into the center of the second upper centralizer 203, and a step is formed in the middle thereof to prevent the connecting compression-resistant cylinder 204 from being separated from the upper side of the second upper centralizer 203.
In one embodiment, as shown in fig. 2 and 4, the upper sides of the cable adapter drill collar 101 and the directional drill-while-drilling drill collar 201 are standard API female buckles, and the lower sides of the cable adapter drill collar 101 and the directional drill-while-drilling drill collar 201 are standard API male buckles, so that the API standard buckle type can be used for ensuring the connection strength and sealing performance between the drill collars and facilitating the connection with other pups.
In one embodiment, as shown in fig. 2 and 4, when connecting the cable adapter sub 10 and the directional-while-drilling sub 20, the copper column 40 is first inserted into the connection compression-resistant cylinder 204, and then the copper column 40 is inserted into the insertion groove on the upper side of the circuit adapter plug 50 as the male buckle of the cable adapter collar 101 is inserted into the female buckle of the directional-while-drilling collar 201. When the male buckle of the while-drilling cable adapter drill collar 101 is screwed into the female buckle of the while-drilling directional drill collar 201, the while-drilling cable adapter drill collar 101 does not rotate, the while-drilling directional drill collar 201 rotates, the circuit adapter plug 50 rotates along with the while-drilling directional drill collar 201, and the copper column 40 and the armored cable 30 do not rotate, so that the cable cannot be knotted and damaged. Meanwhile, when the circuit adapter plug 50 rotates, the copper pillar 40 and the inner wall of the insertion groove of the circuit adapter plug 50 rub against each other, so that the contact between the copper pillar and the inner wall can be enhanced, and the conductivity between the copper pillar and the inner wall can be enhanced.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, the appended claims are intended to be construed to include preferred embodiments and all such changes and/or modifications as fall within the scope of the invention, and all such changes and/or modifications as are made to the embodiments of the present invention are intended to be covered by the scope of the invention.
Claims (10)
1. A coiled tubing measurement while drilling tool, comprising:
the cable switching nipple comprises a cable switching drill collar, a cable switching compression-resistant cylinder and a first centering component for fixing the cable switching compression-resistant cylinder are arranged in the cable switching drill collar, and an armored cable is connected with a copper column for connection through the cable switching compression-resistant cylinder and the first centering component; and
the directional nipple joint while drilling comprises a directional drill collar while drilling, one end of the directional drill collar while drilling is fixedly connected with the cable adapter joint, a connecting pressure-resistant cylinder, a second centralizing component and a directional probing pipe pressure-resistant cylinder are arranged in the directional drill collar while drilling, a circuit adapter plug is arranged in the connecting pressure-resistant cylinder, one end of the circuit adapter plug is connected with a copper column and can rotate relatively, the other end of the circuit adapter plug is connected with a circuit board arranged in the directional probing pipe pressure-resistant cylinder through the circuit adapter plug, the connecting pressure-resistant cylinder and the directional probing pipe pressure-resistant cylinder are connected through the second centralizing component,
wherein the first centering component comprises a first upper centering device, a first centering device locking sleeve and a centering plug which are arranged in the cable adapter drill collar, the first centering device locking sleeve is in threaded connection with the cable adapter drill collar, the upper end of the first upper centering device is abutted against the first centering device locking sleeve, the lower end of the centering plug is abutted against the lower end surface of an inner cavity of the cable adapter drill collar, the lower end of the cable adapter pressure-resistant cylinder is abutted against the centering plug, the upper end of the cable adapter pressure-resistant cylinder passes through the first upper centering device, and the shoulder of the upper end of the cable adapter pressure-resistant cylinder is abutted against the lower end surface of the first upper centering device,
the centralizing plug comprises a sealing connector, a centralizing plug body and a long contact pin which are sequentially connected, the sealing connector extends towards the first upper centralizer, the long contact pin extends towards the directional nipple while drilling, a copper column wrapped with an insulating sheet passes through the sealing connector to extend towards the directional nipple while drilling and is communicated with a circuit adapter plug arranged in a connecting pressure-resistant cylinder,
wherein the first upper centralizer comprises a centralizer inner ring, a centralizer outer ring and a first supporting rib connected between the centralizer inner ring and the centralizer outer ring, a cable channel is formed in the centralizer inner ring, a plurality of first slurry holes are separated by the first supporting rib between the centralizer inner ring and the centralizer outer ring,
righting plug body includes inner ring, outer loop and connects the support rib of inner ring and outer loop, and space between inner ring and the outer loop is separated a plurality of second mud holes by the support rib, and long contact pin extends downwards from the inner ring lower surface of righting plug body, and sealing connector upwards extends from the inner ring upper surface of righting plug body, and the middle part of righting plug body is equipped with the copper post passageway that runs through sealing connector, righting plug body and long contact pin.
2. The tool of claim 1, wherein a tapered sealing rubber sleeve and a cable locking sleeve are arranged in the cable transfer compression-resistant cylinder, and the armored cable is communicated with the copper column connected in the centering plug from the first centering device locking sleeve, the first upper centering device, the tapered sealing rubber sleeve, the cable locking sleeve and the insulating connecting component in sequence.
3. The tool of claim 2, wherein the cable lock sleeve has a plurality of angled pointed teeth on an inner surface thereof, the angled pointed teeth being configured to engage an outer sheath of the armored cable when installed.
4. The tool according to any one of claims 1 to 3, wherein the insulation connection assembly comprises a cable core insulation sleeve arranged at the copper core end of the armored cable, a copper column insulation sheath wrapping the copper column, and a thread locking sleeve and a pressing ring arranged outside the cable core insulation sleeve, wherein the thread locking sleeve is arranged between the sealing connector and the pressing ring and is in threaded connection with the cable transfer compression-resisting cylinder.
5. The tool of claim 4, wherein a disc spring assembly is disposed between one end face of the locking sleeve and the clamp ring, a gasket disc spring assembly is disposed between the other end face of the locking sleeve and the sealing connector, and the clamp ring is connected to the locking sleeve and the cable sheath via fasteners.
6. The tool of claim 5, wherein the material of one or more of the cable lock sleeve, clamp ring, bolt, disc spring, thread lock sleeve, washer disc spring assembly is non-magnetic metal.
7. The tool of any one of claims 1 to 3, wherein the upper end of the copper cylinder is formed with an annular conductive groove, and the copper core of the armored cable and the copper cylinder are conducted through the conductive groove.
8. The tool of any one of claims 1 to 3, wherein the second centering assembly comprises a second upper centralizer, a second centralizer locking sleeve and a lower centralizer, the connecting pressure-resistant cylinder sequentially penetrates through the second centralizer locking sleeve and the second upper centralizer to be in sealing connection with the directional probe pressure-resistant cylinder, one end of the directional probe pressure-resistant cylinder penetrates through the second upper centralizer to be in sleeve connection with the pressure-resistant cylinder, and the other end of the directional probe pressure-resistant cylinder is connected in the lower centralizer and sealed through a plug.
9. The tool of claim 8, wherein the circuit adapter plug is arranged at the small diameter end of the connecting compression-resistant cylinder, the front end of the circuit adapter plug is provided with a plug-in slot communicated with the copper column, the rear end of the circuit adapter plug is directly communicated with the front end of the circuit adapter column, and the rear end of the circuit adapter column is connected with the circuit board arranged in the directional probe compression-resistant cylinder through a lead.
10. The tool of claim 9, wherein plug insulating sleeves are sleeved on the outer surfaces of the circuit adapter plug and the circuit adapter post, and hollow adapter post insulating sleeves are connected to the outer sides below the plug insulating sleeves through insulating pads.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730599.2A CN110748337B (en) | 2018-07-05 | 2018-07-05 | Coiled tubing measurement while drilling tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730599.2A CN110748337B (en) | 2018-07-05 | 2018-07-05 | Coiled tubing measurement while drilling tool |
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| CN110748337B true CN110748337B (en) | 2022-11-25 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111810129B (en) * | 2020-06-12 | 2022-07-15 | 中国海洋石油集团有限公司 | Measurement probe and measurement instrument |
| CN111794692B (en) * | 2020-08-04 | 2022-02-01 | 西南石油大学 | Quick connecting joint of underground measurement while drilling instrument |
| CN112160745A (en) * | 2020-09-29 | 2021-01-01 | 北京六合伟业科技股份有限公司 | EMWD electromagnetic wave measuring system suitable for diamond core drilling |
| CN112523700B (en) * | 2020-11-30 | 2022-11-18 | 中国石油天然气集团有限公司 | Wire passing universal shaft assembly and wire passing method |
| CN113847012B (en) * | 2021-08-09 | 2023-10-20 | 中国海洋石油集团有限公司 | Underground measuring tool |
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| CN102946081A (en) * | 2012-10-10 | 2013-02-27 | 中国石油集团长城钻探工程有限公司 | Cable composite-joint for coiled tubing drilling |
| CN203722192U (en) * | 2013-12-09 | 2014-07-16 | 中国石油集团长城钻探工程有限公司 | Coiled tubing circuit three-way device |
| CN106522922A (en) * | 2016-11-23 | 2017-03-22 | 中国石油集团长城钻探工程有限公司 | Measurement while drilling tool for coiled tubing drilling |
| CN206931743U (en) * | 2017-04-28 | 2018-01-26 | 中石化石油工程技术服务有限公司 | One kind is with brill across the drill collar rotary connector of measurement and control instrument |
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| CN106223937B (en) * | 2016-08-31 | 2017-09-29 | 中国科学院地质与地球物理研究所 | A kind of reception device suitable for the wireless short pass of the nearly drill bit in underground |
| CN106640055B (en) * | 2016-11-21 | 2017-11-17 | 中国科学院地质与地球物理研究所 | It is a kind of to be applied to the reception device for boring orientation acoustic logging |
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| CN102946081A (en) * | 2012-10-10 | 2013-02-27 | 中国石油集团长城钻探工程有限公司 | Cable composite-joint for coiled tubing drilling |
| CN203722192U (en) * | 2013-12-09 | 2014-07-16 | 中国石油集团长城钻探工程有限公司 | Coiled tubing circuit three-way device |
| CN106522922A (en) * | 2016-11-23 | 2017-03-22 | 中国石油集团长城钻探工程有限公司 | Measurement while drilling tool for coiled tubing drilling |
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| CN110748337A (en) | 2020-02-04 |
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