CN111997554A - Deep well oil casing cutting tool - Google Patents
Deep well oil casing cutting tool Download PDFInfo
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- CN111997554A CN111997554A CN202010972101.0A CN202010972101A CN111997554A CN 111997554 A CN111997554 A CN 111997554A CN 202010972101 A CN202010972101 A CN 202010972101A CN 111997554 A CN111997554 A CN 111997554A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 94
- 238000004873 anchoring Methods 0.000 claims abstract description 97
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 239000003921 oil Substances 0.000 claims description 39
- 230000007246 mechanism Effects 0.000 claims description 13
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 description 23
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 239000002360 explosive Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 108010066057 cabin-1 Proteins 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000003440 toxic substance Substances 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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- Life Sciences & Earth Sciences (AREA)
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- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The application discloses deep well oil casing cutting means, deep well oil casing cutting means include consecutive balance bin, hydraulic power storehouse, anchoring storehouse and cutting head, balance bin sets up to balance cutting means external pressure and cutting means internal pressure, anchoring storehouse includes anchoring device, hydraulic power storehouse includes hydraulic means and power device, hydraulic means with anchoring device links to each other and drives anchoring device moves, makes cutting means fix in the pit assigned position, the cutting head includes transmission and cutter, power device passes through transmission drives the cutter is rotatory along self axis, and drives the cutter rotates along the cutting head axis.
Description
Technical Field
The present application relates to, but is not limited to, the field of downhole cutting tools, and in particular to a deep well oil casing cutting tool.
Background
The cutting of the oil well downhole pipe column can be selected in various modes, and the common modes comprise energy gathering cutting, chemical cutting, hydraulic cutting, mechanical cutting and the like. Both hydraulic cutting and mechanical cutting need to depend on the cooperation of related hydraulic equipment and a downhole tool string, need to be conveyed by a drill pipe or a coiled tubing, and need to be equipped with a large and complex sand mixing and discharging system. The energy-gathering cutting is to spray special powder to cut off the pipe column by using special explosive, but the section is not flat. The chemical cutting operation is limited by the control of initiating explosive devices, highly toxic chemical agents and the like, and the cutting methods have limitations.
Disclosure of Invention
The embodiment of the application provides a deep well oil casing cutting tool, safety ring protects, and the flexible operation.
The embodiment of the application provides a deep well oil casing cutting tool, which comprises a balance bin, a hydraulic power bin, an anchoring bin and a cutting head which are sequentially connected,
the balance bin is arranged to balance the external pressure of the cutting tool and the internal pressure of the cutting tool,
the anchoring cartridge comprises an anchoring device for anchoring the cartridge,
the hydraulic power bin comprises a hydraulic device and a power device, the hydraulic device is connected with the anchoring device and drives the anchoring device to act, so that the cutting tool is fixed at a designated position in the well,
the cutting head comprises a transmission device and a cutter, and the power device drives the cutter to rotate along the axis of the power device and drives the cutter to rotate along the axis of the cutting head.
Compared with some technologies, the method has the following beneficial effects:
the application provides a deep well oil casing cutting means can be used to the cable transport, can carry out the equipment of electromechanical cutting in the deep well, but the cutting process ground can be monitored, and the cutting scope can be adjusted along with the change of tubular column in the pit, can save the whole progress of overhaul well operation, practices thrift the working cost, can gradually replace current chemistry, explosion cutting, makes the safer environmental protection of relevant product and operation.
Other features and advantages of the present application will be set forth in the description that follows.
Drawings
The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.
Fig. 1 is a schematic structural diagram of a deep well oil casing cutting tool according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a surge bin according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a hydraulic power cartridge according to an embodiment of the present application;
FIG. 4 is a schematic structural view of an anchoring cartridge according to an embodiment of the present application;
fig. 5 is a schematic structural view of a cutting head according to an embodiment of the present application.
Illustration of the drawings:
1-a balancing silo, 11-a joint boot, 12-a quick-connect joint housing, 13-a balancing silo housing, 14-a quick-connect joint, 15-a wiring tube, 16-a balancing spring, 17-a balancing piston, 18-a piston seal, 19-a balancing silo adapter, 20-a power line, 2-a hydraulic power silo, 21-a hydraulic power silo housing, 22-a pump motor, 23-a hydraulic pump, 24-a feed motor, 25-a first coupling, 26-a ball screw mechanism, 27-a feed rod, 28-a main motor, 29-a main drive shaft, 30-a hydraulic silo adapter, 3-an anchoring silo, 31-an anchoring silo housing, 32-an anchoring piston, 33-an anchoring spring, 34-a movable connecting rod, 35-an anchoring arm, 36-fixed link, 37-anchor point, 38-anchored lower mounting bracket, 39-planetary gear housing, 40-planetary reducer main shaft, 4-cutting head, 41-sun gear, 42-planetary gear, 43-planetary gear shaft, 44-planetary plate, 45-planetary reducer rear cover, 46-revolution housing, 47-first gear shaft, 48-second gear shaft, 49-first gear, 50-second gear, 51-tool shaft, 52-tool, 53-tool mounting bracket, 54-tool gland, 55-helical gear slider, 56-feed helical gear, 57-rotating head, 58-second coupling, 59-third coupling, 60-oil passage.
Detailed Description
To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The embodiment of the application provides a deep well oil casing cutting tool, as shown in fig. 1 to 5, deep well oil casing cutting tool is including consecutive balance bin 1, hydraulic power storehouse 2, anchoring storehouse 3 and cutting head 4, balance bin 1 sets up to balanced cutting tool external pressure and cutting tool internal pressure, anchoring storehouse 3 includes anchoring device, hydraulic power storehouse 2 includes hydraulic means and power device, hydraulic means links to each other with anchoring device and drives anchoring device action, make cutting tool fix in the appointed position in the pit, cutting head 4 includes transmission and cutter 52, power device passes through transmission and drives cutter 52 rotatory along self axis to and drive cutter 52 and rotate along 4 axes of cutting head. The cutting tool is in the form of an elongated cylinder.
In an exemplary embodiment, as shown in fig. 2, the balance cabin 1 includes a balance cabin housing 13, a quick connector 14 disposed at a left end of the balance cabin housing 13, and a balance cabin connector 19 disposed at a right end of the balance cabin housing 13, a balance piston 17 is disposed in the balance cabin housing 13, a space on a right side of the balance piston 17 is filled with hydraulic oil (i.e., internal pressure), a first elastic member is disposed on a left side of the balance piston 17, a through hole is disposed at a portion of the balance cabin housing 13 on the left side of the balance piston 17, the space on the left side of the balance piston 17 is communicated with an external downhole environment (i.e., external pressure) through the through hole, a left end of the first elastic member is fixed at the left end of the balance cabin housing 13, and a right end of.
The main body of the balance bin 1 is a balance bin shell 13, the left end of the balance bin shell 13 is connected with a quick connector shell 12 through threads, and a quick connector 14 is arranged at the left end position inside the quick connector shell 12. The right end of the quick connector 14 is connected with a wiring pipe 15, and an electric wire 20 for connecting the right end of the quick connector 14 and a motor in the hydraulic power bin 2 is accommodated in the wiring pipe 15. When the instrument works, the left end of the balance bin 1 is connected with the electronic control short section through the quick connection-peg 14, and the electronic control short section sends out a control command to control the motion of the mechanical short section motor. The foremost end of the quick connector shell 12 is connected with the connector protective cover 11 through threads, and is a protective measure for the quick connector 14 when the instrument does not work.
The right end of the quick-connection connector shell 12 is provided with a piston type pressure balancing device, the piston type pressure balancing device comprises a balancing spring 16 (namely a first elastic part), a balancing piston 17 and a piston seal 18, pressure is continuously increased in the instrument descending process and finally reaches 140 MPa, so that the piston type pressure balancing device is arranged to compensate external pressure, the right side of the balancing piston 17 is an instrument inner cavity and is filled with hydraulic oil, the left side space is communicated with the external environment through a through hole of a balancing bin shell 13, the balancing piston 17 moves to the right in the balancing bin shell 13 when the external environment pressure is increased, the oil pressure inside the tool is increased, the external pressure is balanced, the system can always keep smaller internal and external pressure difference, and the cutting tool can work for a long time under a high-pressure environment. The right end of the balance bin outer shell 13 is connected with a balance bin adapter 19 through threads.
In an exemplary embodiment, as shown in fig. 3, the hydraulic power silo 2 includes a hydraulic power silo housing 21, a hydraulic device and a power device, the hydraulic device and the power device are disposed in the hydraulic power silo housing 21, the left end of the hydraulic power silo housing 21 is connected to the balance silo adapter 19, the right end of the hydraulic power silo housing 21 is provided with a hydraulic silo adapter 30, oil passages 60 are disposed on the hydraulic power silo housing 21 and the hydraulic silo adapter 30, and the hydraulic device (including the pump motor 22 and the hydraulic pump 23) is communicated with a space in the hydraulic silo adapter 30 through the oil passages 60 to drive the anchoring device to operate. The power means comprises a power feed means (including a feed motor 24) which is connected to the transmission means by a feed rod 27. The power device also comprises a power rotating device (comprising a main motor 28), the power rotating device is connected with the transmission device through a main transmission shaft 29, and the main transmission shaft 29 is a hollow shaft and is sleeved outside the feeding rod 27.
The right end of the balance bin adapter 19 is in threaded connection with the left end of the hydraulic power bin shell 21, the leftmost end inside the hydraulic power bin 2 is provided with a pump motor 22, the pump motor 22 is connected to a hydraulic pump 23 in a shaft mode, the pump motor 22 drives the hydraulic pump 23 to suck hydraulic oil from an external cavity during operation, and pumped high-pressure hydraulic oil flows to the left end of the anchoring bin 3 through an oil passing channel below the hydraulic power bin shell 21 and an oil passing channel of the hydraulic bin adapter 30 and is used for driving the anchoring piston 32 to move left and right to provide power for the anchoring arm 35. The right side of the hydraulic pump 23 is provided with a feed motor 24, and the feed motor 24 converts the rotary motion into the axial linear motion of a feed rod 27 through a first coupler 25 and a ball screw mechanism 26 so as to provide power for the feed motion of a subsequent cutter 52; to the right of the ball screw mechanism 26 is a main motor 28, the main motor 28 being connected to a main drive shaft 29 via a second coupling 58, providing for the subsequent movement of the tool 52 in both revolution (with the tool shaft 51 line not coincident with the cutting head 4 axis, with the tool 52 etc. rotating along the cutting head 4 axis) and rotation (with the tool 52 rotating along the tool shaft 51 line). The right end of the hydraulic power bin shell 21 is connected with a hydraulic bin adapter 30 through threads.
In an exemplary embodiment, as shown in fig. 4, the anchoring chamber 3 includes an anchoring chamber housing 31 and an anchoring device, the anchoring chamber housing 31 is provided with a vacant area, the anchoring device is radially and telescopically installed in the vacant area, an anchoring piston 32 is further provided in the anchoring chamber housing 31, a space on the left side of the anchoring piston 32 is communicated with a space in the hydraulic adapter 30 (i.e., the left side of the anchoring piston 32 is communicated with the hydraulic device), the right side of the anchoring piston 32 is provided with a second elastic member, the left end of the second elastic member is connected with the anchoring piston 32, and the right end of the second elastic member is fixed at the right end of the anchoring chamber housing 31. The anchoring device comprises an anchoring arm 35, a movable connecting rod 34 and a fixed connecting rod 36, wherein the left end of the anchoring arm 35 is connected to the anchoring piston 32 through the movable connecting rod 34, the right end of the anchoring arm 35 is connected to the right end of the anchoring cabin shell 31 through the fixed connecting rod 36, the anchoring piston 32 moves along the axial direction, and the movable connecting rod 34 drives the anchoring arm 35 to extend or retract from the anchoring cabin shell 31 along the radial direction.
The main body of the anchoring cabin 3 is an anchoring cabin shell 31 connected to the right end of the hydraulic cabin adapter 30, an anchoring piston 32 capable of moving left and right is installed inside the anchoring cabin shell 31, three pin holes are evenly distributed on the right end of the anchoring piston 32 along the circumferential direction, the three pin holes are respectively connected with three groups of anchoring devices, each anchoring device comprises a movable connecting rod 34, an anchoring arm 35, a fixed connecting rod 36 and an anchoring point 37 installed on the anchoring arm 35, and a four-bar mechanism is formed (four bars are the anchoring piston 32+ the movable connecting rod 34+ the anchoring arm 35+ the fixed connecting rod 36); the fixed link 36 is fixed on the anchoring lower mounting frame 38 at the right side of the anchoring spring 33 (i.e. the second elastic element), and in operation, when the cutting tool determines the cutting position downhole, the pump motor 22 is turned on, the high-pressure oil pumped by the hydraulic pump 23 pushes the anchoring piston 32 to move to the right, and the movable link 34 and the fixed link 36 can be driven by the anchoring piston 32 to spread the three sets of anchoring arms 35, so that the anchoring point 37 can be tightly embedded on the wall of the tubing pipe, and the fixation of the entire cutting tool downhole is completed.
In an exemplary embodiment, as shown in fig. 5, the transmission means comprises a reducer having an input end connected to an output end of the power rotating means and an output end connected to an end rotating mechanism that rotates about its own axis of rotation (i.e., the cutter 52 rotates along the axis of the cutting head 4, i.e., revolves). The end rotating mechanism comprises a revolution shell 46, the output end of the power rotating device is also connected with a first gear shaft 47, the first gear shaft 47 is in meshing transmission with a second gear shaft 48 arranged in the revolution shell 46 through gears, a first gear 49 is arranged at the right end of the second gear shaft 48, a cutter 52 is arranged on a cutter shaft 51, the first gear 49 is in meshing transmission with the cutter shaft 51 through the gears, and the power rotating device drives the cutter 52 to rotate along the axis of the power rotating device through the first gear shaft 47, the second gear shaft 48, the first gear 49 and the cutter shaft 51. The end part rotating mechanism further comprises a helical tooth slide block 55, the right end of the feeding rod 27 is provided with the helical tooth slide block 55, the second gear shaft 48 is sleeved with a feeding helical gear 56, the helical tooth slide block 55 and the feeding helical gear 56 are in helical tooth transmission, the right end of the feeding helical gear 56 is in threaded connection (or in gear meshing transmission) with the rotating head 57, and the power feeding device drives the rotating head 57 to rotate through the feeding rod 27, the feeding helical gear 56 slide block, the second gear shaft 48 and the feeding helical gear 56, so that the axis of the cutter 52 arranged on the rotating head 57 deviates from the axis of the cutting head 4.
The main motor 28 drives the main transmission shaft 29 to rotate, and the right end of the main transmission shaft 29 is divided into two movements by a third coupling 59.
Firstly, the revolving motion of the cutter 52 is performed, because the rotation speed of the main motor 28 is fast, the speed reduction is performed through the planetary reducer, the third coupler 59 drives the sun gear 41 to rotate through the planetary reducer main shaft 40, the sun gear 41 drives the three planetary gears 42 around to rotate, the planetary gears 42 drive the planetary plate 44 of the next stage to rotate through the planetary gear shaft 43, the last planetary plate 44 output after the three-stage speed reduction drives the revolving shell 46 to rotate, and the whole device behind the revolving shell 46 performs the revolving motion. The sun gear 41 and the planet gear 42 are both installed in the planet gear housing 39, the left end of the planet gear housing 39 is connected with the anchoring bin housing 31 through threads, and the right end is connected with the planet reducer rear cover 45 for sealing and installing the fixed revolution housing 46. On the other hand, the third coupling 59 rotates the second gear shaft 48 through the first gear shaft 47, and the first gear 49 installed at the right end of the second gear shaft 48 further rotates the second gear 50 installed on the tool shaft 51, thereby driving the tool 52 to perform a rotation motion. The planetary reducer main shaft 40 is fitted on the outside of the first gear shaft 47, the second gear shaft 48 is installed in the inner space of the revolving casing 46, and the cutter shaft 51 is installed on the rotary head 57, and the right end of the cutter shaft 51 is installed with the cutter mounting bracket 53 and the cutting cutter 52 and the cutter gland 54 for fixing the cutter 52.
Finally, to complete the cutting of the tool in the oil pipe, the cutting motion further includes a tool deviation motion, as mentioned above, the feeding motor 24 converts the rotation motion into the linear motion of the feeding rod 27 through the first coupling 25 and the ball screw mechanism 26, the feeding rod 27 passes through the anchoring bin 3 and reaches the revolving housing 46 of the cutting head 4, and is connected to the helical tooth slider 55, the helical tooth slider 55 and the feeding helical gear 56 are in helical tooth transmission, and then the linear motion of the helical tooth slider 55 is converted into the rotation motion of the feeding helical gear 56, so as to drive the rotating head 57 fixedly connected to the right end of the feeding helical gear 56 to rotate by a certain angle, so that the tool 52 performs the cutting around deviating from the center (the cutting tool is located in the oil pipe, and the tool 52 cuts the inner wall. The helical tooth slider 55 is placed in the revolution shell 46, a slideway for axial movement of the helical tooth slider 55 is arranged in the revolution shell 46, the feeding helical gear 56 is sleeved on the second gear shaft 48, the rotating head 57 is connected to the right end of the feeding helical gear 56 through threads, and the rotating head 57 is driven by a rotating force to be wholly deviated from an accommodating groove of the revolution shell 46, so that the cutter 52 is deviated from the original center, namely the axis of the cutter 52 is deviated from the axis of the cutting head 4, the edge of the cutter 52 is protruded out of the edge of the cutting head 4 (the revolution shell 46), and the cutter 52 is convenient to cut the inner wall of the oil pipe.
In practical use, firstly, oil is injected through oil injection holes formed around the balance bin adapter 19 and the hydraulic bin adapter 30, so that an inner cavity of an instrument is filled with hydraulic oil, then the joint protection cover 11 is taken down, the electronic control short section is connected with the whole tool through the quick-connection adapter 14, then the cable car on the ground starts to pay off, so that a cutting tool starts to go down the well, the tool moves down in an oil pipe with a small diameter, when the depth needing cutting is reached, the pump motor 22 drives the hydraulic pump 23 to pump high-pressure oil out, so that the anchoring piston 32 moves rightwards, and the three symmetrical anchoring arms 35 are propped open on the inner wall of the oil pipe to fix the cutting tool. Then the main motor 28 and the feeding motor 24 are started, the cutter 52 has three motions simultaneously, namely revolution motion, rotation motion and deviation motion, under the combined action of the three motions, the actual motion of the cutter 52 presents rotary spiral motion, the oil pipe is gradually cut open, the cutting process can be observed through a ground control device, the feeding motor 24 is reversely rotated after the cutting is finished, the cutter 52 is retracted to the central position, the pump motor 22 is closed, the anchoring arm 35 is retracted into the tool, and the cable car on the ground starts to take up the cable to finish the whole cutting process.
The deep well oil casing cutting tool that this application embodiment provided adopts balanced piston to come the balanced external ultrahigh pressure, and application hydraulic motor drive anchor arm is with the instrument anchoring in waiting to cut the department, and application hydraulic circuit (oil through passage 60) carries out control design to the anchoring support arm. The feed motor drives the cutter to extend out of the cutting tool at a certain speed to cut the pipe through screw transmission and feed bevel gear transmission under the control of transmission. The main motor controls the rotation of the cutter through the speed reducer and gear transmission and simultaneously drives the cutter to revolve through the planetary speed reducer. The electric cutting tool for the deep well oil pipe is an intelligent pipe cutting tool, has the advantages of rapid deployment, accurate positioning, large cutting size range, high cutting success rate, reusable cutting knife, no use of explosive and other initiating explosive and chemicals, less environmental restriction, smooth cutting section and the like, provides convenience for next fishing, can cut multiple cutters in one time, and can well meet the requirements of high precision, high reliability and the like.
In the description of the present application, it should be noted that the term "plurality" refers to two or more, and the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the structures referred to have a specific direction, are configured and operated in a specific direction, and thus, cannot be construed as limiting the present application.
In the description of the embodiments of the present application, unless expressly stated or limited otherwise, the terms "connected," "mounted," and "installed" are to be construed broadly, e.g., the term "connected" may be a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The embodiments described herein are exemplary rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements that have been disclosed in this application may also be combined with any conventional features or elements to form unique aspects as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other aspects to form another unique aspect as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Claims (10)
1. A deep well oil casing cutting tool is characterized by comprising a balance bin, a hydraulic power bin, an anchoring bin and a cutting head which are sequentially connected,
the balance bin is arranged to balance the external pressure of the cutting tool and the internal pressure of the cutting tool,
the anchoring cartridge comprises an anchoring device for anchoring the cartridge,
the hydraulic power bin comprises a hydraulic device and a power device, the hydraulic device is connected with the anchoring device and drives the anchoring device to act, so that the cutting tool is fixed at a designated position in the well,
the cutting head comprises a transmission device and a cutter, and the power device drives the cutter to rotate along the axis of the power device and drives the cutter to rotate along the axis of the cutting head.
2. The deep well oil casing cutting tool of claim 1, wherein the balance bin comprises a balance bin housing, a quick connector disposed at a left end of the balance bin housing, and a balance bin adapter disposed at a right end of the balance bin housing,
a balance piston is arranged in the balance chamber shell, the right side of the balance piston is filled with hydraulic oil, the left side of the balance piston is provided with a first elastic part, the part of the balance chamber shell, which is positioned on the left side of the balance piston, is provided with a through hole,
the left end of the first elastic piece is fixed at the left end of the balance bin shell, and the right end of the first elastic piece is connected with the balance piston.
3. The deep well oil casing cutting tool of claim 2, wherein the hydraulic power bin comprises a hydraulic power bin housing, the hydraulic device and the power device are arranged in the hydraulic power bin housing, the left end of the hydraulic power bin housing is connected with the balance bin adapter, the right end of the hydraulic power bin housing is provided with a hydraulic bin adapter,
the hydraulic power storehouse shell with be provided with the oil passage on the hydraulic pressure storehouse adapter, hydraulic means passes through the oil passage with space intercommunication in the hydraulic pressure storehouse adapter, in order to drive anchoring device action.
4. The deep well oil casing cutting tool of claim 1, wherein the power means comprises a power feed means, the power feed means being connected to the transmission means by a feed rod.
5. The deep well oil casing cutting tool of claim 4, wherein the power means further comprises a power rotating means connected to the transmission means through a main drive shaft,
the main transmission shaft is a hollow shaft and is sleeved outside the feeding rod.
6. The deep well oil casing cutting tool of claim 1, wherein the anchoring cartridge comprises an anchoring cartridge housing having a vacant area disposed thereon and the anchoring device radially telescopically mounted in the vacant area,
an anchoring piston is further arranged in the anchoring bin shell, the space on the left side of the anchoring piston is communicated with the space in the hydraulic bin adapter, a second elastic piece is arranged on the right side of the anchoring piston,
the left end of the second elastic part is connected with the anchoring piston, and the right end of the second elastic part is fixed at the right end of the anchoring cabin shell.
7. The deep well oil casing cutting tool according to claim 6, wherein the anchoring means comprises an anchoring arm, a movable link and a fixed link, a left end of the anchoring arm is connected to the anchoring piston through the movable link, a right end of the anchoring arm is connected to a right end of the anchoring cartridge housing through the fixed link,
the anchoring piston moves along the axial direction, and the movable connecting rod drives the anchoring arm to extend out or retract from the anchoring cabin shell along the radial direction.
8. The deep well oil casing cutting tool according to claim 5, wherein the transmission means comprises a speed reducer and an end rotating mechanism,
the input end of the speed reducer is connected with the output end of the power rotating device, the output end of the speed reducer is connected with the end rotating mechanism, and the end rotating mechanism rotates by taking a self rotating shaft as a center.
9. The deep well oil casing cutting tool of claim 8, wherein the end rotation mechanism includes a revolving housing,
the output end of the power rotating device is also connected with a first gear shaft, the first gear shaft and a second gear shaft arranged in the revolution shell are in meshing transmission through a gear,
a first gear is arranged at the right end of the second gear shaft, the cutter is arranged on a cutter shaft, the first gear and the cutter shaft are in meshing transmission through a gear,
the power rotating device drives the cutter to rotate along the axis of the power rotating device through the first gear shaft, the second gear shaft, the first gear and the cutter shaft.
10. The deep well oil casing cutting tool of claim 9, wherein the end rotating mechanism further comprises a helical tooth slider, the helical tooth slider is mounted at the right end of the feed rod,
the second gear shaft is sleeved with a feeding helical gear, the helical gear sliding block and the feeding helical gear are in helical gear transmission, the right end of the feeding helical gear is in threaded connection with the rotating head,
the power feeding device drives the rotating head to rotate through the feeding rod, the feeding bevel gear sliding block, the second gear shaft and the feeding bevel gear, so that the axis of the cutter arranged on the rotating head deviates from the axis of the cutting head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010972101.0A CN111997554A (en) | 2020-09-16 | 2020-09-16 | Deep well oil casing cutting tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010972101.0A CN111997554A (en) | 2020-09-16 | 2020-09-16 | Deep well oil casing cutting tool |
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| CN111997554A true CN111997554A (en) | 2020-11-27 |
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| CN202010972101.0A Pending CN111997554A (en) | 2020-09-16 | 2020-09-16 | Deep well oil casing cutting tool |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855060A (en) * | 2021-02-19 | 2021-05-28 | 西安石竹能源科技有限公司 | Cable-driven underground cutting instrument and control method |
| CN112943139A (en) * | 2021-02-19 | 2021-06-11 | 西安石竹能源科技有限公司 | Underground cutting instrument |
| CN113182597A (en) * | 2021-04-30 | 2021-07-30 | 西南石油大学 | Underground oil pipe cutting device |
| CN113182571A (en) * | 2021-04-30 | 2021-07-30 | 西南石油大学 | Underground milling cutter type oil pipe cutting device |
| CN113738299A (en) * | 2021-08-18 | 2021-12-03 | 西南石油大学 | Downhole pipe column cutting tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114607303A (en) * | 2020-12-09 | 2022-06-10 | 中海油能源发展股份有限公司 | Electrically-driven underground oil pipe internal cutting tool |
| CN112943139A (en) * | 2021-02-19 | 2021-06-11 | 西安石竹能源科技有限公司 | Underground cutting instrument |
| CN112855060A (en) * | 2021-02-19 | 2021-05-28 | 西安石竹能源科技有限公司 | Cable-driven underground cutting instrument and control method |
| CN113182597A (en) * | 2021-04-30 | 2021-07-30 | 西南石油大学 | Underground oil pipe cutting device |
| CN113182571A (en) * | 2021-04-30 | 2021-07-30 | 西南石油大学 | Underground milling cutter type oil pipe cutting device |
| CN113182571B (en) * | 2021-04-30 | 2022-04-19 | 西南石油大学 | Underground milling cutter type oil pipe cutting device |
| CN113738299A (en) * | 2021-08-18 | 2021-12-03 | 西南石油大学 | Downhole pipe column cutting tool |
| CN115807640A (en) * | 2021-09-13 | 2023-03-17 | 中国石油天然气股份有限公司 | Underground cable transmission electric cutting actuating mechanism, system and process |
| WO2023173138A1 (en) * | 2022-03-11 | 2023-09-14 | Schlumberger Technology Corporation | Rotary tool hydraulic power system |
| CN114607305A (en) * | 2022-03-15 | 2022-06-10 | 陕西海格瑞恩实业有限公司 | Underground pipe column cutting device |
| CN114607305B (en) * | 2022-03-15 | 2024-05-31 | 陕西海格瑞恩实业有限公司 | Downhole tubular column cutting device |
| CN115263220B (en) * | 2022-09-23 | 2022-12-13 | 西南石油大学 | Cutting tool in chuck anchoring type production pipe column |
| CN115263220A (en) * | 2022-09-23 | 2022-11-01 | 西南石油大学 | Cutting tool in chuck anchoring type production string |
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Application publication date: 20201127 |