CN113175308B - Direct-connected mechanical coiled tubing drilling and grinding drifting device - Google Patents
Direct-connected mechanical coiled tubing drilling and grinding drifting device Download PDFInfo
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- CN113175308B CN113175308B CN202110498742.1A CN202110498742A CN113175308B CN 113175308 B CN113175308 B CN 113175308B CN 202110498742 A CN202110498742 A CN 202110498742A CN 113175308 B CN113175308 B CN 113175308B
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- 238000005553 drilling Methods 0.000 title claims abstract description 64
- 238000000227 grinding Methods 0.000 title claims abstract description 48
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
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- 238000007906 compression Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims 3
- 239000011148 porous material Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 13
- 238000007789 sealing Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
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- 238000005516 engineering process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
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- 238000012546 transfer Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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- 210000003781 tooth socket Anatomy 0.000 description 1
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- 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
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
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- 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
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Abstract
A direct-connection mechanical coiled tubing drilling and grinding drifting device comprises a coiled tubing, a slip sleeve, a slip, an upper joint, a force transmission head, a spring lining rod, a spring, an upper supporting seat barrel, a mandrel, a stud, a lower supporting seat barrel, an outer sleeve, a drilling and grinding head and the like. The slip sleeve and the upper joint are sleeved on the outer surface of the continuous pipe, the slip is clamped in an annular space formed by the slip sleeve, the upper joint and the continuous pipe, the force transmission head is connected with the upper joint, a stud is assembled in a threaded hole of the force transmission head, a spring lining rod penetrates through a round hole, a spiral groove of the mandrel is meshed with the stud, the lower end of the mandrel is connected with a drilling and grinding head, the drilling and grinding head is respectively supported on the force transmission head and a lower supporting seat cylinder through an upper supporting seat cylinder and a rolling body, the lower supporting seat cylinder is radially fixed with an outer sleeve, the outer sleeve is sleeved and limited on the outer surface of the force transmission head, the spring lining rod penetrates through a spring, and an overflowing pore passage is formed in the surfaces and the center of the upper supporting seat cylinder and the mandrel. The invention has simple construction and can be used for drilling and grinding well dredging operation of deep wells, ultra-deep wells and directional wells.
Description
Technical Field
The invention relates to the technical field of underground operation, in particular to a direct-connection mechanical coiled tubing drilling and grinding drifting device.
Background
In recent years, the coiled tubing technology has been widely applied to the field of oil and gas development, and particularly for deep wells and ultra-deep wells and horizontal wells, the coiled tubing operation has the advantages of wide applicability, high working efficiency and the like. In the operations of fracturing, oil testing, well repairing and the like of an oil-gas well by adopting a continuous pipe technology, firstly, preparation work of a shaft is completed by dredging the well, and well dredging of conventional well dredging operation is difficult due to cement ash remained near the bottom of the well, slurry cemented sediment generated in slurry well completion, necking of the well hole or large dogleg degree of the shaft and the like caused by well cementing.
At present, when a continuous pipe is adopted for drifting operation, for a vertical well, a motor head and a drift diameter gauge or a scraper are generally utilized to check and clean the quality of a shaft so as to complete the preparation work of shaft operation; for horizontal wells, especially for wells with long horizontal sections, a hydraulic oscillator is added in a tool string, and a guide pipe string is led to descend to a specified position under the action of the oscillator and a drift diameter gauge, wherein the bottom of the tool string is added with a screw drill and a grinding shoe, or the grinding shoe is replaced by a tri-scraper (or tri-cone bit), and the coiled tubing drill grinding and drifting capacity using a drag reducer is the best. However, these methods using coiled tubing drift have the disadvantages of low drift diameter gauge or scraper drift capability, severe vibration of the tubing string caused by the hydraulic oscillator, high water power consumption, and complex tool string composition and operation process.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a direct-connection mechanical coiled tubing drilling and grinding drifting device, and aims to solve the problems that a motor head and other electric machines are required to be installed in a conventional coiled tubing drifting, a drift diameter gauge or a scraper is low in drifting capacity, water power consumption is high and the like. The invention adopts the external clamping continuous pipe joint, takes the downward force of the continuous pipe as a power source, adopts a stud and spiral meshing drive and a multi-spring parallel reset mechanism, and realizes the purpose that the rotary drilling of the drilling head can smoothly unblock the well.
In order to achieve the purpose, the invention provides a direct-connection mechanical coiled tubing drilling and grinding drifting device which comprises an upper connector assembly, a driving assembly and a drilling and grinding head, wherein the driving assembly is connected to one end of the upper connector assembly, the drilling and grinding head is connected to one end of the driving assembly, the upper connector assembly is used for being connected with a coiled tubing, and the driving assembly drives the drilling and grinding head to drill and grind and remove resistance by utilizing pressure between the coiled tubing and the drilling and grinding head.
Preferably, the upper joint component comprises a continuous pipe, a slip sleeve, slips and an upper joint, the slips are two in number and are clamped in an annular space formed by the slip sleeve, the upper joint and the continuous pipe, the slip sleeve is sleeved on the continuous pipe and is fixed with the continuous pipe through a slip sleeve screw to prevent relative rotation of the slip sleeve, and an inner conical surface of the slip sleeve radially extrudes an outer conical surface of the slips to enable two sections of inclined teeth on the inner surface of the slips to bite into the surface of the continuous pipe, so that connection between the upper joint and the continuous pipe is completed, and the upper top and the lower falling of the upper joint are prevented.
Preferably, the upper end of the upper joint is in threaded connection with the slip sleeve, the tooth grooves in the inner circular surface of the upper joint are embedded with teeth at the end part of the continuous pipe so as to overcome the torque of the upper joint, the axial grooves in the inner circular surface of the upper end of the upper joint are used for circumferential and axial limiting of the slip rod handle inserted into the upper joint, and the lower end of the upper joint is designed with 2 7/8 The TBG standard oil pipe thread is convenient for connecting other operation tools or devices.
Preferably, the driving assembly comprises a force transmission head, a spring lining rod, a spring, an upper supporting seat barrel, a mandrel, a stud, a lower supporting seat barrel, an outer sleeve and a drilling head, and the force transmission head and the upper joint pass through a pipe 2 7/8 The lower end of the upper support seat cylinder is provided with a reduced small-diameter section, the side part of the small-diameter section is provided with two threaded holes for mounting a stud, the two threaded holes have a circumferential included angle of 90 degrees and are axially distributed in a staggered manner so as to ensure stable and reliable transmission of the stud, and the small-diameter section is of a 3/4 incomplete cylinder structure and is beneficial to smooth flow of working liquid in the pipe; the length of the force transmission head meets the requirement of the maximum stroke of the force transmission head in the outer sleeve, the mandrel is provided with a deeper and wider spiral groove, and when the mandrel moves relative to the studs, the mandrel can obtain a large enough driving force distance through the two studs inserted into the spiral groove.
Preferably, six grooves and three diversion trenches which are distributed at equal intervals with the grooves are uniformly distributed on the outer circumferential surface of the upper support seat cylinder, and an assembly of three groups of rolling bodies and rolling body seats can be assembled in each groove to indirectly support the mandrel; the hexagonal blind hole in the center of the lower end face of the upper supporting seat cylinder is matched with the hexagonal head at the upper end of the mandrel, so that relative rotation between the hexagonal blind hole and the hexagonal head is prevented.
Preferably, a flow guide hole, a shaft shoulder, a groove, a thread and a central overflowing hole are sequentially designed on the outer circular surface of the lower end of the near mandrel, the four uniformly distributed flow guide holes are communicated with the overflowing hole in the central position of the near mandrel and are communicated with an overflowing pore channel of the drilling and grinding head, the shaft shoulder axially limits the lower support base barrel, the assembled rolling body and the rolling body base are assembled in the groove, and the lower end is in external thread connection with the drilling and grinding head.
Preferably, six threaded holes uniformly distributed on the upper end surface of the lower support seat cylinder are internally provided with lower end heads of six spring lining rods, and grooves on the lower end surface of the lower support seat cylinder are used for reducing friction with the upper end surface of the drilling and grinding head and ensuring the stability of the movement of the drilling and grinding head.
Preferably, the number of the springs is six, the springs are respectively sleeved on six spring lining rods to form a parallel return spring group which is in an initial micro-compression state, and the compressible amount of the springs meets the maximum stroke requirement of the stud.
Preferably, the inner convex circle on the inner circular surface of the upper end of the outer sleeve is axially limited on the outer convex circle at the lower end of the force transmission head, and outer sleeve screws are assembled in 2 threaded through holes on the outer circular surface of the lower end.
Preferably, the drilling head can be one of a drilling shoe, a three-blade bit or a three-roller bit which is suitable for the device.
The invention has the beneficial effects that:
the invention adopts a stud and spiral meshing drive and multi-spring parallel connection reset mechanism, and is provided with an external clamping and biting continuous pipe joint, thereby realizing the drilling and grinding drifting operation of the continuous pipe, solving the problem of low drifting capability of a drift diameter gauge or a scraper, and improving the technical level of the conventional drifting operation of the continuous pipe.
The device can enter a working state by means of the feeding process of the continuous pipe without a power motor, and can automatically reset by means of the compression resilience force of the internal spring group, so that the continuous operation of the device is ensured, and the device is simple to use and operate and stable in operation.
The maximum rigid body outer diameter of the invention is 110mm, the maximum outer diameter of the joint component is 90mm, and both parameters meet the requirements of most oil and gas wells on the maximum outer diameter of the downhole operation tool; continuous pipe joint assembly designed by the invention and with standard 2 7/8 The upper joint of the TBG thread can be directly connected with a coiled tubing for drifting and can be easily connected with other operation devices or tools, so that the integration performance of the device is improved。
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural diagram of a direct-connection mechanical coiled tubing drilling and grinding drifting device;
fig. 2 is a schematic diagram of a multi-spring parallel reset mechanism.
Fig. 3 is a schematic view of the support mechanism on the mandrel.
Fig. 4 is a three-dimensional schematic view of the top sub.
FIG. 5 is a three-dimensional schematic view of slips.
Fig. 6 is a schematic view of the structure of the force transfer head.
Fig. 7 is a three-dimensional view of the force transfer head section i of fig. 6.
Fig. 8 is a radial cross-sectional view of the upper shoe cylinder.
Drawings
1. A coiled tubing; 2. slip sleeve screws; 3. a slip sleeve; 4. slips; 5. a first seal ring; 6. an upper joint; 7. a dowel head screw; 8. a force transmission head; 9. an upper rolling body; 10. an upper rolling body seat; 11. an upper support pedestal barrel; 12. a spring; 13. a spring-backed rod; 14. a jacket; 15. a mandrel; 16. a lower support base cylinder; 17. a screw is sleeved; 18. drilling a grinding head; 19. a lower rolling body; 20. a lower rolling body seat; 21. a second seal ring; 22. a third seal ring; 23. a stud; 24. a mandrel screw; 25. a fourth seal ring; 26. and a fifth sealing ring.
Detailed Description
The technical solution of the present invention is further illustrated by the accompanying drawings and examples.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Examples
Example 1:
in order to solve the problems of low well dredging capacity, large dynamic load, large water power consumption and the like of the conventional drift diameter gauge or scraper, the invention provides a direct-connection mechanical coiled tubing drilling and grinding well dredging device shown in figures 1-8. The present invention will be described in further detail with reference to the accompanying drawings. As shown in fig. 1-8, the direct-connection mechanical coiled tubing drilling and grinding drifting device comprises an upper joint assembly, a driving assembly and a drilling and grinding head (18), wherein the upper joint assembly comprises a coiled tubing 1, a slip sleeve 3, a slip 4, an upper joint 6 and the like, and the driving assembly comprises a dowel 8, a spring lining rod 13, a spring 12, an upper support sleeve 11, a mandrel 15, a stud 23, a lower support sleeve 16, an outer sleeve 14 and the like. The slip sleeve 3, the upper joint 6 and the continuous pipe 1 form a pressing mechanism which can enable teeth of the slips 4 to bite into the surface of the continuous pipe 1 by radially extruding the slips 4, the slip sleeve 3 is fixed on the outer circular surface of the continuous pipe 1 through a screw 2, and a rod handle of the slips 4 is inserted into an axial groove at the uppermost section of the upper joint 6. Standard oil pipe thread (2) at upper end of force transmission head 8 7/8 TBG) is connected with the lower end of the upper joint 6, studs 23 are respectively assembled in two threaded holes at the lower end of the force transmission head 8, and the length of the force transmission head 8 meets the maximum stroke requirement of the force transmission head in the outer sleeve. Two studs 23 are inserted into the spiral groove of the mandrel 15 to obtain a sufficient driving force; the outer circular surface of the lower end of the near mandrel 15 is sequentially provided with a flow guide hole, a shaft shoulder, a groove, a thread and a central overflowing hole, the four evenly distributed flow guide holes are communicated with the overflowing hole at the central position of the flow guide hole and communicated with an overflowing pore channel of the drilling and grinding head 18, and the shaft shoulder axially limits the axial position of the lower supporting base barrel 16The groove is internally provided with an assembled rolling body 19 and a rolling body seat 20, and the lower end of the groove is externally threaded with a drilling head 18; the mandrel 15 is supported at its lower end by the rolling bodies 19 coming into contact with the inner circumferential surface of the lower support cylinder 16. The assembly of the rolling body 9 and the rolling body seat 10 assembled in the groove on the upper support seat barrel 11 indirectly provides support for the upper end of the mandrel 15; the hexagonal blind hole at the center of the lower end part of the upper supporting seat cylinder 11 is matched with the head part of the upper end of the mandrel 15, so that the relative rotation of the hexagonal blind hole and the mandrel is prevented. The spring 12, the spring lining rod 13, the force transmission head 8 and the lower support seat barrel 16 form a multi-spring parallel reset mechanism, the spring is in an initial micro-compression state, and the compressible amount of the spring meets the maximum stroke requirement of the stud 23. The outer sleeve 14, the force transmission head 8, the upper support base cylinder 11, the lower support base cylinder 16, the mandrel 15, the upper joint 6, the coiled tubing 1 and the first to fifth sealing rings 5-21-22-25-26 form a pipeline through which working fluid smoothly flows into a water hole of the drilling and grinding head 18 in the coiled tubing 1.
The working process of the invention is as follows:
in the process of carrying out the drifting operation by directly connecting the device with the coiled tubing string, when the drilling head meets the resistance, the coiled tubing 1 is continuously fed downwards, the upper joint 6, the force transmission head 8 and the double screw columns 23 assembled on the force transmission head 8 are driven to move downwards, the movement of the screw columns 23 in the spiral groove of the mandrel 15 drives the mandrel to rotate, and the mandrel 15 drives the drilling head 18 to rotate to drill, grind and unblock the drifting. If the drilling and grinding head 18 smoothly unblocks through meeting a blocked well section or a small shaft resistance and the stud 23 moves to the lower end stop point of the spiral groove, at the moment, the downward movement of the force transmission head 8 enables the spring 12 to be in a compressed state to store energy, the multi-spring parallel reset mechanism starts to act, the outer sleeve 14, the mandrel 15, the lower supporting seat cylinder 16, the drilling and grinding head 18 and the like are pushed to move downwards under the action of the resilience force of the spring 12, the stud 23 moves upwards and resets relative to the mandrel 15, the mandrel 15 is driven to rotate reversely, the drilling and grinding head 18 is driven to rotate to continue drilling and grinding through a well, and the device continuously works; if the stud 23 reaches the lower end stop point of the spiral groove of the mandrel 15 and the multi-spring parallel reset mechanism cannot reset the stud 23 and the spring, the stud 23 and the spring can reset by adopting a coiled pipe lifting continuous pipe column mode, and continuous pipe drilling and grinding drifting operation can be continuously carried out by using the invention. In the working process of the device, the working fluid in the continuous pipe enters the inner cavity of the outer sleeve 14 from the guide groove on the outer circular surface of the upper support base cylinder 11, flows into the water hole of the drilling and grinding head 18 from the guide hole on the outer circular surface of the lower end of the mandrel and then flows to the annular space, so that the flushing of chips and the circulation of the working fluid are realized. The first to fifth sealing rings 5-21-22-25-26 play a good sealing role in the flow of the working fluid in the device.
As shown in fig. 1, 4 and 5, the external bite continuous pipe joint includes a continuous pipe 1, a slip sleeve 3, two slips 4, an upper joint 6, and the like. Teeth at the lower end of the continuous pipe 1 are axially engaged with the teeth grooves on the inner circumferential surface of the upper joint 6 to bear the torque of the upper joint. The slip sleeve 3 is fixed on the outer circular surface of the coiled tubing 1 through the screw 2, and the slip sleeve 3 is prevented from rotating relative to the coiled tubing 1. The outer conical surface of the slip 4 is radially extruded by the inner conical surface of the slip sleeve 3. The upper joint 6 is circumferentially fixed with the force transmission head 8 through the screw 7 to overcome the reaction torque of the force transmission head to prevent rotation, and the standard oil pipe thread (2) at the lower end of the upper joint 6 7/8 TBG) facilitates access to other work tools or devices.
As shown in fig. 1, 3, 6, 7 and 8, the double-stud mandrel screw-engagement driving mechanism includes a force transmission head 8, a mandrel 15, a stud 23, a mandrel screw 24, an upper support cylinder 11, a lower support cylinder 16, an outer sleeve 14, and the like. The stud 23 is assembled on the power transmission head 8, the lower half section of the stud 23 is inserted into the spiral groove of the mandrel 15, when the stud 23 starts to move axially along the mandrel 15 under the action of the driving force of the power transmission head 8, the stud 23 is meshed with the spiral groove to drive the mandrel 15 to rotate, and meanwhile, the mandrel 15 drives the drilling head 18 to rotate to drill and mill the well; the lower end of the mandrel 15 is radially supported on the inner circular surface of the lower supporting base cylinder 16 through a rolling body 19 assembled on the lower end of the mandrel 15, the lower supporting base cylinder 16 is radially fixed on the inner circular surface of the lower end of the outer sleeve 14, and the upper supporting base cylinder 11 is radially supported on the inner circular surface of the force transmission head 8 through a rolling body 9 assembled on the outer circular surface of the upper supporting base cylinder.
As shown in fig. 2, the multi-spring parallel reset mechanism is composed of a force transmission head 8, a spring lining rod 13, a spring 12 and a lower support sleeve 16, and functions to restore the double-stud 23 from the lower end dead point of the spiral groove of the mandrel 15 to the initial position of the upper end by the resilience force of the compression spring. The external-clamping continuous pipe joint designed by the invention has a simple installation process, and saves the time for ineffective drifting operation; the double-stud and spiral meshing drive and multi-spring parallel reset mechanism is adopted, so that the rotary drilling function of the drilling head and the continuous work of the device are realized, the drifting operation capability of the coiled tubing is improved, and the coiled tubing can be used for drifting operation of deep wells, ultra-deep wells and directional wells.
The double-stud and spiral meshing transmission mechanism can be driven to work by means of the downward thrust of the coiled tubing without a power motor, so that the coiled tubing drilling and grinding drifting operation is realized, the problem of low efficiency of the conventional drifting is solved, and the dynamic load of the operation and the hydraulic loss of working fluid are reduced.
The multi-spring parallel reset mechanism adopted by the invention is convenient to select materials, and utilizes the compression energy storage characteristic of the spring to complete the automatic reset of the device by virtue of the restoring force generated by the compression of the spring in the working process of the device, thereby ensuring the stable and continuous operation of the device.
The two parameters of the maximum rigid body outer diameter and the maximum outer diameter of the coiled tubing joint assembly meet the requirement of a common shaft on the maximum outer diameter of an underground operation tool, and the device can be widely applied to coiled tubing drilling and grinding drifting operation of oil and gas wells.
Example 2:
compared with embodiment 1, the upper joint component design of the embodiment is standard 2 7/8 The TBG tubing thread is as shown in figure 4 whereby the top sub assembly portion (external snap-in coiled tubing) can be connected directly to the body portion for well work as well as through top sub 2 according to actual field work requirements 7/8 The TBG is connected to a corresponding device or tool.
The upper joint assembly of the present invention has a function of externally seizing the coiled tubing joint, and based on embodiment 1, as shown in fig. 1, 4 and 5, the upper joint assembly includes the coiled tubing 1, a slip sleeve 3, slips 4, an upper joint 6, and the like. The first sealing ring 5 and the fifth sealing ring 26 are respectively assembled between the continuous pipe 1 and the upper joint 6 as well as between the slip sleeve 3, and teeth at the lower tail end of the first sealing ring are axially embedded with tooth sockets uniformly distributed on the middle section of the inner circular surface of the upper joint 6, so that the rotation of the upper joint relative to the continuous pipe is prevented. The slip sleeve 3 is fixed outside the continuous pipe 1 through a screw 2On the circular face, rotation of the slip sleeve 3 relative to the coiled tubing 1 is prevented. The shanks of the slips 4 are inserted into axial grooves in the upper sub 6 which are radially compressed by the slip sleeve 3 and bite into the coiled tubing 1 to prevent the connected device or tool from being tripped up and down. The upper joint 6 is circumferentially fixed with an upper end joint of an external device or a tool through a screw 7 so as to overcome the counter torque of the external joint and prevent rotation, and the standard oil pipe thread (2) at the lower end of the upper joint 6 7/8 TBG) and other work tools or devices 2 7/8 And TBG connection.
The working process of the invention is as follows:
when other working tools or devices are required to be connected with the coiled tubing 1 through the external snap coiled tubing connector, teeth at the lower end of the coiled tubing and threaded holes for installing slip sleeve screws are processed in advance, and then the upper connector 6 and the standard 2 of the external connector at the upper end of other working tools or devices are connected 7/8 TBG oil pipe threaded connection, then slip sleeve 3 (with fifth sealing ring 26 installed) is sleeved on the outer circular surface of coiled tubing 1, then slips 4 toothless tail rod handle is inserted into the groove at the upper end of upper joint 6 (with first sealing ring 5 installed), and sleeved on the outer circular surface of coiled tubing 1 together, and tooth grooves of upper joint 6 are embedded with teeth of coiled tubing 1, finally, the slip sleeve 3 is rotated to be engaged with common threads at the upper end of upper joint 6 until screw 2 can smoothly connect and fix slip sleeve 3 and coiled tubing 1 in radial direction. Under the combined action of the slip sleeve 3 and the upper joint 6, the bidirectional teeth on the inner surface of the slip 4 bite into the surface of the coiled tubing 1 to complete the connection of other operation tools or devices with the coiled tubing 1, and the coiled tubing string can perform other required downhole operations.
The upper joint component designed by the invention forms a complete and independent external clamping continuous pipe joint, and realizes the well dredging operation of the connection of the body part and the continuous pipe; by external snap-in joints 2 7/8 The TBG standard oil pipe is externally connected with threads, so that the connection between other operation devices or tools and the coiled tubing is realized, and the flexibility and the construction efficiency of the coiled tubing string and the field application of the device are improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (9)
1. A direct-connection mechanical coiled tubing drilling and grinding drifting device is characterized by comprising an upper connector assembly, a driving assembly connected to one end of the upper connector assembly and a drilling and grinding head (18) connected to one end of the driving assembly, wherein the upper connector assembly is used for being connected with a coiled tubing (1), and the driving assembly drives the drilling and grinding head (18) to drill and grind and remove resistance by utilizing the pressure between the coiled tubing (1) and the drilling and grinding head (18);
the upper joint component comprises a continuous pipe (1), a slip sleeve (3), slips (4) and an upper joint (6), the slips (4) are divided into two pieces and clamped in an annular space formed by the slip sleeve (3), the upper joint (6) and the continuous pipe (1), the slip sleeve (3) is sleeved on the continuous pipe (1) and fixed with the continuous pipe (1) through a slip sleeve screw (2) to prevent the slip sleeve (3) from rotating relatively, the upper end of the upper joint (6) is in threaded connection with the slip sleeve (3), and an axial groove in the inner circular surface of the upper end of the upper joint (6) is used for circumferential and axial limiting of a slip (4) rod handle inserted into the upper joint;
the driving assembly comprises a dowel head (8), a spring lining rod (13), a spring (12), an upper supporting seat cylinder (11), a mandrel (15), a stud (23), a lower supporting seat cylinder (16), an outer sleeve (14) and a drilling head (18), wherein the dowel head (8) and the upper joint (6) pass through 2 7 / 8 The TBG is in threaded connection, an upper supporting seat cylinder (11) is arranged in a force transmission head (8), the bottom end of the upper supporting seat cylinder (11) is connected with a mandrel (15), the lower end of the mandrel (15) penetrates into a lower supporting seat cylinder (16), the lower end of the force transmission head (8) is provided with a reduced-diameter small-diameter section, two threaded holes for mounting a stud (23) are formed in the side part of the small-diameter section, the length of the force transmission head (8) meets the maximum stroke requirement of the force transmission head in an outer sleeve, a deeper and wider spiral groove is formed in the mandrel (15), and the spiral groove is connected with the stud (23);
the total number of the springs (12) is six, the springs are respectively sleeved on the six spring lining rods (13) to form a parallel reset spring group which is in an initial micro-compression state, and the compressible amount of the springs meets the maximum stroke requirement of the stud (23).
2. The direct-connection mechanical coiled tubing drilling and milling drifting device of claim 1, wherein the inner conical surface of the slip sleeve (3) radially presses the outer conical surface of the slip (4) to enable the two sections of teeth inclined upwards and downwards on the inner surface of the slip (4) to bite into the surface of the coiled tubing (1) so as to complete the connection of the upper joint (6) and the coiled tubing (1) and prevent the upper joint (6) from jacking and falling down.
3. The direct-connection mechanical coiled tubing drilling and grinding drifting device of claim 1, wherein the tooth grooves on the inner circular surface of the upper joint (6) are embedded with teeth at the end part of the coiled tubing (1) to overcome the torque of the upper joint (6), and the lower end of the upper joint (6) is designed with 2 7 / 8 The TBG standard oil pipe thread is convenient for connecting other operation tools or devices.
4. The direct-connected mechanical coiled tubing drilling and grinding drifting device of claim 1, wherein the circumferential included angle of the two threaded holes is 90 degrees, the two threaded holes are distributed in a staggered mode in the axial direction, so that stable and reliable transmission of the stud (23) is guaranteed, the small-diameter section is of a 3/4 incomplete cylindrical structure, and smooth flowing of working fluid in the tube is facilitated; when the mandrel (15) moves relatively to the stud (23), the mandrel (15) can obtain enough driving torque through the two studs (23) inserted into the spiral grooves.
5. The direct-connected mechanical coiled tubing drilling and grinding drifting device of claim 1, wherein six grooves and three diversion grooves which are distributed at equal intervals with the grooves are uniformly distributed on the outer circumferential surface of the upper supporting seat barrel (11), and an assembly of three groups of rolling bodies (9) and rolling body seats (10) is assembled in each groove to indirectly provide support for the mandrel (15); the hexagonal blind hole in the center of the lower end face of the upper supporting seat cylinder (11) is matched with the hexagonal head at the upper end of the mandrel (15) to prevent relative rotation between the hexagonal blind hole and the hexagonal head.
6. The direct-connection mechanical coiled tubing drilling and grinding drifting device of claim 1 is characterized in that a flow guide hole, a shaft shoulder, a groove, threads and a central overflowing hole are sequentially designed on the outer circumferential surface of the lower end of a near mandrel (15), four flow guide holes which are uniformly distributed are communicated with the overflowing hole in the central position of the near mandrel and communicated with the overflowing hole of the drilling and grinding head, the shaft shoulder axially limits a lower supporting seat barrel (16), an assembled rolling body (19) and a rolling body seat (20) are assembled in the groove, and the lower end of the near mandrel is in threaded connection with the drilling and grinding head (18).
7. The straight connecting mechanical coiled tubing drilling and milling drifting device of claim 1, wherein the lower end heads of six spring lining rods (13) are assembled in six threaded holes uniformly distributed on the upper end face of the lower supporting seat barrel (16), and grooves on the lower end faces of the six spring lining rods are used for reducing friction with the upper end face of the drilling head (18) and ensuring the smoothness of the movement of the drilling head.
8. The direct-connected mechanical coiled tubing drilling and grinding drifting device of claim 1, wherein the inner convex circle on the inner circular surface of the upper end of the outer sleeve (14) is axially limited to the outer convex circle on the lower end of the power transmission head (8), and the 2 threaded through holes on the outer circular surface of the lower end are internally provided with outer sleeve screws (17).
9. The direct-connected mechanical coiled tubing drilling and milling drifting device of claim 1, wherein the drilling head (18) is one of a drilling shoe, a tri-blade bit and a tri-cone bit suitable for the device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110498742.1A CN113175308B (en) | 2021-05-08 | 2021-05-08 | Direct-connected mechanical coiled tubing drilling and grinding drifting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110498742.1A CN113175308B (en) | 2021-05-08 | 2021-05-08 | Direct-connected mechanical coiled tubing drilling and grinding drifting device |
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| CN113175308A CN113175308A (en) | 2021-07-27 |
| CN113175308B true CN113175308B (en) | 2022-10-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203783460U (en) * | 2014-04-01 | 2014-08-20 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Composite bridge plug-drilling and grinding oil pipe drilling tool assembly for horizontal wells |
| CN106437583A (en) * | 2016-08-29 | 2017-02-22 | 中国石化江汉油田分公司江汉采油厂 | Self-rotation drilling type shaft mashing device |
| CN107489378A (en) * | 2017-10-18 | 2017-12-19 | 杰瑞能源服务有限公司 | A kind of coiled tubing attachment means |
| CN111101897A (en) * | 2019-12-04 | 2020-05-05 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Coiled tubing drilling, drilling and grinding well dredging method and device with screw and application |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6719050B2 (en) * | 2002-02-06 | 2004-04-13 | Kenneth E. Longacre | Method and apparatus for removing solid material from a well using a rotary pump |
| US7044240B2 (en) * | 2002-12-20 | 2006-05-16 | Mcneilly Keith | Torque absorber for downhole drill motor |
-
2021
- 2021-05-08 CN CN202110498742.1A patent/CN113175308B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203783460U (en) * | 2014-04-01 | 2014-08-20 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Composite bridge plug-drilling and grinding oil pipe drilling tool assembly for horizontal wells |
| CN106437583A (en) * | 2016-08-29 | 2017-02-22 | 中国石化江汉油田分公司江汉采油厂 | Self-rotation drilling type shaft mashing device |
| CN107489378A (en) * | 2017-10-18 | 2017-12-19 | 杰瑞能源服务有限公司 | A kind of coiled tubing attachment means |
| CN111101897A (en) * | 2019-12-04 | 2020-05-05 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Coiled tubing drilling, drilling and grinding well dredging method and device with screw and application |
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| CN113175308A (en) | 2021-07-27 |
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