CN113969760A - Electric channeling-checking leakage-finding device - Google Patents
Electric channeling-checking leakage-finding device Download PDFInfo
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- CN113969760A CN113969760A CN202010714985.XA CN202010714985A CN113969760A CN 113969760 A CN113969760 A CN 113969760A CN 202010714985 A CN202010714985 A CN 202010714985A CN 113969760 A CN113969760 A CN 113969760A
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- 238000012856 packing Methods 0.000 claims abstract description 26
- 230000005465 channeling Effects 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 15
- 230000007704 transition Effects 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- 239000003638 chemical reducing agent Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000005553 drilling Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 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
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
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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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an electric channeling and leakage finding device which comprises an electric setting and unsealing mechanism and an outer shell, wherein the electric setting and unsealing mechanism and the outer shell are sleeved with the electric setting and unsealing mechanism, the electric setting and unsealing mechanism comprises a motor (9), a speed reducer (13), a coupler (16), a ball screw and a central pipe (43) which are sequentially arranged from top to bottom, a packing component is sleeved outside the central pipe (43), the packing component comprises a rubber cylinder (38) and a slip seat (42) which are arranged up and down, the packing component is positioned below the outer shell, slips (41) are arranged on the slip seat (42), and the motor (9) can drive the central pipe (43) to move along the vertical direction and enable the packing component to be in a setting state or an unsealing state. This electronic channeling finding hourglass device that tests adopts the cable to go into down, utilizes the winch to realize going into the function fast, can utilize the electric energy to accomplish the setting rapidly or the deblocking many times, shortens operating cycle, convenient to use, the setting deblocking is reliable, the operating efficiency height.
Description
Technical Field
The invention relates to the field of oil field production equipment, in particular to an electric channeling-checking leakage-finding device.
Background
In oilfield operations, it is often necessary to run packers due to the need to use packer casings (e.g., to make leaks, test, block water, etc.). Packers are a common downhole plugging tool that is often used in various fields. Applications for packers include, but are not limited to, the following:
1. in drilling operations, as permanent or retrievable bridge plugs, service packers or permanent cement retainers.
2. During testing operations, the test interval is isolated from drilling fluid and other intervals.
3. In production operations, zonal recovery is performed, such as by using a packer to seal down.
4. In well repair operations, a packer is used to seal off a casing damage site.
The existing setting and unsetting mode of the packer is as follows: lifting and placing the pipe column, rotating the pipe column, self-sealing, hydraulic pressure, tool setting and heating power. The traditional running mode is that a drilling rod or an oil pipe or an oil rod is connected to run into the well, and the drilling rod or the oil pipe or the oil rod can also be connected with a steel wire and then run into the well by a winch.
Disclosure of Invention
In order to improve the sealing operation efficiency, the invention provides the electric channeling detection device which adopts a cable to be lowered, can realize the function of quick lowering by utilizing a winch, can quickly finish sealing or unsealing by utilizing electric energy for multiple times, shortens the operation period, is convenient to use, is reliable in sealing and unsealing and has high operation efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an electronic scurrying finding hourglass device, includes electronic setting deblocking mechanism and the shell body that the endotheca was established, electronic setting deblocking mechanism contains motor, reduction gear, shaft coupling, ball and the center tube that sets gradually from the top down, and the center tube overcoat is equipped with the packing element, packing element contains packing element and the slips seat that sets up from top to bottom, the packing element is located the below of shell body is provided with the slips on the slips seat, and the motor can drive the center tube and remove and make along vertical direction the packing element is in the setting state or the deblocking state.
The shell body contains the rotation-proof sleeve and the switch cover of connecting from top to bottom, ball contains the screw rod and the screw nut that the endotheca was established, and in the rotation-proof sleeve was located to the screw nut cover, the rotation-proof sleeve can prevent that screw nut from rotating, and screw nut passes through the switch base member and is connected with the center tube, and the switch base member is the upper end and seals the open tubular structure of lower extreme, and the switch base member is located the switch cover.
The upper end of the switch sleeve is fixedly sleeved outside the lower end of the anti-rotating sleeve, an upper annular cavity is formed between the screw nut and the switch sleeve, an upper convex ring is arranged outside the upper portion of the switch base body, a lower annular cavity is formed between the switch base body and the switch sleeve, and the upper end of the central tube is located between the switch base body and the switch sleeve.
The middle part of switch base member is equipped with interior through-hole, and the cover is equipped with the switch valve gap between switch base member and the switch cover, and the switch valve gap is the tubular structure, and the switch valve gap is located down the annular cavity, switch valve gap and switch base member clearance fit or transition fit, switch valve gap and switch cover clearance fit or transition fit, and the external diameter of center tube is greater than the internal diameter of switch valve gap, and the external diameter of going up the bulge loop is greater than the internal diameter of switch valve gap, and the middle part of switch cover is equipped with outer through-hole.
A first sealing ring is arranged between the switch valve cover and the switch base body, the length of the switch valve cover is smaller than the distance between the central pipe and the upper convex ring along the axis direction of the switch sleeve, the length of the switch valve cover is smaller than or equal to the distance between the upper end of the inner through hole and the upper convex ring, and the length of the switch valve cover is larger than or equal to the distance between the upper end of the inner through hole and the central pipe.
In the process that the switch base body moves upwards from the lower limit position, when the central pipe is in contact with the switch valve cover, the central pipe can push the switch valve cover to move upwards, the switch valve cover blocks the inner through hole, and the switch valve cover prevents the outer through hole from being communicated with the inner through hole; when the switch base body is located at the upper limit position, the lower end of the switch valve cover is higher than the upper end of the outer through hole, the lower end of the inner through hole is higher than the lower end of the switch valve cover, and an upper space exists between the upper convex ring and the switch valve cover.
When the lower end of the inner through hole is lower than the lower end of the switch valve cover in the process that the switch base body moves downwards from the upper limit position, the outer through hole is communicated with the inner through hole through the lower annular cavity; when the upper convex ring is contacted with the switch valve cover, the switch base body can push the switch valve cover to move downwards, and the switch base body can block the outer through hole; when the switch base member was located lower extreme position, the switch valve gap was located the below of outer through-hole, and interval down exists between switch valve gap and the center tube.
The outer surface of the switch valve cover is provided with an outer annular groove, an open ring is sleeved in the outer annular groove, chamfers are arranged at the upper end and the lower end of the outer surface of the open ring, the inner surface of the switch sleeve comprises an upper inner annular groove and a lower inner annular groove which are arranged up and down, the upper inner annular groove is positioned above the outer through hole, the lower inner annular groove is positioned below the outer through hole, when the switch matrix is positioned at the upper limit position, the position of the outer annular groove corresponds to that of the upper inner annular groove, the open ring is radially expanded, and the open ring is clamped between the outer annular groove and the upper inner annular groove; in the process that the switch base body moves downwards from the upper limit position, the switch valve cover and the split ring can overcome the blocking of the lower inner annular groove and cross the lower inner annular groove.
An intermediate sleeve is sleeved between the central pipe and the packing assembly, the intermediate sleeve comprises a slip ring joint and a liner pipe which are connected up and down, the upper end of the slip ring joint is sleeved between the lower end of the switch sleeve and the central pipe, the inner diameter of the slip ring joint is smaller than the outer diameter of the switch valve cover, the lower end of the inner surface of the switch sleeve is provided with an expanding section, the switch sleeve is connected with a slip ring retainer ring, the lower end of the inner surface of the switch sleeve forms an inner annular groove in the bottom, the upper end of the slip ring joint is provided with an outer flange, the outer flange is positioned in the inner annular groove in the bottom, the length of the outer flange is smaller than that of the inner annular groove in the bottom along the axis direction of the central pipe, and the switch valve cover can push the slip ring joint and the liner pipe to move downwards.
Slip ring joint and bushing pipe pass through the two-way connector to be connected fixedly, it still contains packing element top connection, packing element lower clutch and cone to seal the subassembly, and packing element top connection, packing element lower clutch, cone, slips and slip seat connect gradually from the top down, form bottom annular cavity between cone and the center tube, and the lower extreme of bushing pipe is located bottom annular cavity, and the lower extreme and the slip seat of center tube are connected fixedly, and the packing element connects and two-way connector joint, and packing element lower clutch and cone joint.
The invention has the beneficial effects that:
1. can realize sealing and unsealing
The setting and the deblocking can be realized by cable control, and the setting and the deblocking of the underground terminal device can be monitored and controlled by a ground control terminal.
2. High pulling-down speed, short construction time and low construction cost
The conventional packer construction is that an operation locomotive is used as power, the packer is connected to the lower part of an oil pipe or a drill rod and then is conveyed to a setting position, and the running mode has the defects of long construction time, large number of workers, high labor intensity, large occupied area of related materials and the like. Resulting in high construction costs.
The electric channeling and leakage finding device disclosed by the invention is used for running in by using the cable operation device, the construction time is short (the speed of running a cable is incomparable with the speed of running an oil pipe), the number of workers is small (only one operator is needed), the labor intensity is low (the operator is operated in front of a terminal in a vehicle, and does not need to connect or disassemble the oil pipe and other strong manual labor), the occupied area is small (only one cable vehicle is needed on the ground, a large number of oil pipes do not need to be stacked, an operation locomotive is not needed, and a vertical derrick and the like are not needed).
3. Simple operation
The electric channeling detection device has no complex operation, and after the electric channeling detection device is lowered to the seat sealing position, an operation hand only needs to operate the motor to rotate in front of the intelligent terminal in the vehicle. General personnel can learn smoothly to use this electric channeling-checking device to control through simple training.
4. Environment-friendly
The environmental protection requirements of oil fields are more and more strict at present. The construction of conventional packer needs to pull out the tubing string, which inevitably brings oil stains and the like attached to the tubing wall out of the well mouth, thereby causing pollution and troublesome post-treatment. The electric channeling-checking leakage-finding device does not need any pipe column, and the pollution problem can not be caused.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
Fig. 1 is an assembly view of the electric channeling leakage detection device according to the present invention.
Fig. 2 is an enlarged schematic view of the upper half of fig. 1.
Fig. 3 is an enlarged schematic view of the lower half of fig. 1.
Fig. 4 is an enlarged schematic view of the first part from top to bottom in fig. 1.
Fig. 5 is an enlarged schematic view of the second portion from the top down in fig. 1.
Fig. 6 is an enlarged schematic view of the third portion from the top down in fig. 1.
Fig. 7 is an enlarged view of the fourth part from top to bottom in fig. 1.
Fig. 8 is an enlarged schematic view of the fifth portion from the top in fig. 1.
Fig. 9 is an enlarged schematic view of the sixth portion from the top in fig. 1.
Fig. 10 is an enlarged schematic view of the seventh portion from the top in fig. 1.
1. A cable; 2. an upper joint; 3. a pressure tester; 4. a first shear pin; 5. a sixth seal ring; 6. a spigot; 7. an electronic section; 8. pressing the cap upwards; 9. a motor; 10. a first anti-rotation pin; 11. a first anti-rotation pin block; 12. connecting sleeves; 13. a speed reducer; 14. a second seal ring; 15. a thrust bearing; 16. a coupling; 17. pressing the cap; 18. a second anti-rotation pin block; 19. a sheath; 20. a third seal ring; 21. the anti-rotation sleeve; 22. a fourth seal ring; 23. a wire lever; 24. a baffle ring; 25. a ball bearing; 26. a lead screw nut; 27. a fifth seal ring; 28. a switch cover; 29. a switch base; 30. a split ring; 31. a valve cover is opened and closed; 32. a first seal ring; 33. a slip ring joint; 34. a slip ring retainer ring; 35. a bi-directional connector; 36. a liner tube; 37. an upper joint of the rubber cylinder; 38. a rubber cylinder; 39. a seventh seal ring; 40. a cone; 41. slips; 42. a slip seat; 43. a central tube; 44. a lower joint of the rubber cylinder;
2801. an upper annular cavity; 2802. a lower annular cavity; 2803. an outer through hole; 2804. an upper inner annular groove; 2805. a lower inner annular groove; 2806. an annular groove in the bottom; .
2901. An upper convex ring; 2902. an inner through hole;
3101. an outer annular groove;
3301. an outer flange;
4001. a bottom annular cavity.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The utility model provides an electronic scurrying finding device, includes electronic setting deblocking mechanism and the shell body that the endotheca was established, electronic setting deblocking mechanism contains motor 9, reduction gear 13, shaft coupling 16, ball and center tube 43 that set gradually from the top down, and center tube 43 overcoat is equipped with seals the subassembly, seal packing element 38 and the slip seat 42 that the subassembly contained setting from top to bottom, seal and separate the subassembly and be located the below of shell body is provided with slips 41 on the slip seat 42, and motor 9 can drive center tube 43 and remove and make along vertical direction seal the subassembly and be in a setting state or deblocking state, as shown in fig. 1 to 10.
In this embodiment, the outer casing includes an anti-rotation sleeve 21 and a switch sleeve 28 that are connected by upper and lower threads, the ball screw includes a screw rod 23 and a screw nut 26 that are sleeved inside and outside, the screw nut 26 is sleeved inside the anti-rotation sleeve 21, the anti-rotation sleeve 21 can prevent the screw nut 26 from rotating, that is, the screw nut 26 can only move up and down but cannot rotate, the screw nut 26 is connected by a switch base 29 and a central tube 43 by threads, the switch base 29 is a tubular structure with an upper end closed and a lower end open, and the switch base 29 is sleeved inside the switch sleeve 28.
In this embodiment, the upper end of the switch sleeve 28 is fixedly sleeved outside the lower end of the rotation preventing sleeve 21, an upper annular cavity 2801 is formed between the screw nut 26 and the switch sleeve 28, an upper convex ring 2901 is arranged outside the upper portion of the switch base body 29, the upper annular cavity 2801 and the upper convex ring 2901 are arranged up and down, a lower annular cavity 2802 is formed between the switch base body 29 and the switch sleeve 28, the upper convex ring 2901 and the lower annular cavity 2802 are arranged up and down, and the upper end of the central tube 43 is located between the switch base body 29 and the switch sleeve 28.
In this embodiment, an inner through hole 2902 is formed in the middle of the side wall of the switch base 29, a switch valve cover 31 is sleeved between the switch base 29 and the switch sleeve 28, the switch valve cover 31 is of a circular tubular structure, the switch valve cover 31 is located in the lower annular cavity 2802, the switch valve cover 31 is in clearance fit or transition fit with the switch base 29, the switch valve cover 31 is in clearance fit or transition fit with the switch sleeve 28, the outer diameter of the central tube 43 is larger than the inner diameter of the switch valve cover 31, the outer diameter of the upper convex ring 2901 is larger than the inner diameter of the switch valve cover 31, and an outer through hole 2803 is formed in the middle of the side wall of the switch sleeve 28.
In this embodiment, the first seal ring 32 is provided between the switch valve cover 31 and the switch base 29, the length of the switch valve cover 31 is smaller than the distance between the center pipe 43 and the upper convex ring 2901 in the axial direction of the switch cover 28, the inner through hole 2902 is located above the center pipe 43, the length of the switch valve cover 31 is smaller than or equal to the distance between the upper end of the inner through hole 2902 and the upper convex ring 2901, and the length of the switch valve cover 31 is greater than or equal to the distance between the upper end of the inner through hole 2902 and the center pipe 43.
In the embodiment, when the central tube 43 contacts the switch valve cover 31 in the process that the switch base 29 moves upwards from the lower limit position, the central tube 43 can push the switch valve cover 31 to move upwards, the switch valve cover 31 blocks the inner through hole 2902, and the switch valve cover 31 prevents the outer through hole 2803 from communicating with the inner through hole 2902; when the switch base 29 is located at the upper limit position, the lower end of the switch valve cover 31 is higher than the upper end of the outer through hole 2803, the lower end of the inner through hole 2902 is higher than the lower end of the switch valve cover 31, and an upper distance exists between the upper convex ring 2901 and the switch valve cover 31, so that the electric channeling-checking and leakage-finding device is in a seating state.
In this embodiment, when the lower end of the inner through hole 2902 is lower than the lower end of the switch cover 31 during the downward movement of the switch base 29 from the upper limit position, the outer through hole 2803 communicates with the inner through hole 2902 through the lower annular cavity 2802, and the outside of the switch housing 28 is pressure-balanced with the inside of the switch base 29; when the upper convex ring 2901 is in contact with the switch valve cover 31, the switch base 29 can push the switch valve cover 31 to move downwards, the switch base 29 can block the outer through hole 2803, and the outer through hole 2803 is not communicated with the inner through hole 2902 any more; when the switch base 29 is located at the lower limit position, the switch valve cover 31 is located below the outer through hole 2803, and a lower distance exists between the switch valve cover 31 and the central pipe 43, so that the electric channeling detection device is in an unlocking state.
The effect of design outer through-hole 2803, interior through-hole 2902 and switch valve gap 31 lies in, and this electronic channeling finding device is by the in-process that the deblocking state changes to the setting state, and switch valve gap 31 makes the outside of switch cover 28 and the inside of switch base member 29 not communicate, and this electronic channeling finding device is by the in-process that the setting state changes to the deblocking state, and switch valve gap 31 can make the outside of switch cover 28 and the inside intercommunication of switch base member 29 to the outside of making switch cover 28 and the internal pressure balance of switch base member 29, reduces the deblocking resistance, raises the efficiency.
In this embodiment, the outer surface of the switch valve cover 31 is provided with an outer annular groove 3101, the outer annular groove 3101 is internally sleeved with a split ring 30, the split ring 30 has the same structure as an existing snap spring, the upper end and the lower end of the outer surface of the split ring 30 are both provided with chamfers, the inner surface of the switch sleeve 28 comprises an upper inner annular groove 2804 and a lower inner annular groove 2805 which are arranged up and down, the upper inner annular groove 2804 is positioned above the outer through hole 2803, the lower inner annular groove 2805 is positioned below the outer through hole 2803, when the switch base 29 is positioned at an upper limit position, the position of the outer annular groove 3101 corresponds to the position of the upper inner annular groove 2804, the split ring 30 is radially expanded, and the split ring 30 is clamped between the outer annular groove 3101 and the upper inner annular groove 2804.
During downward movement of the switch base 29 from the upper limit position, when the outer annular groove 3101 is positioned to correspond to the lower inner annular groove 2805, the split ring 30 radially expands, the split ring 30 is clamped between the outer annular groove 3101 and the lower inner annular groove 2805, the switch valve cover 31 can continue to move downward, and the switch valve cover 31 and the split ring 30 can overcome the obstruction of the lower inner annular groove 2805 and pass over the lower inner annular groove 2805.
The effect of designing the split ring 30 to cooperate with the upper and lower inner annular grooves 2804 and 2805 is that it is easier for the split ring 30 to enter the upper and lower inner annular grooves 2804 and 2805, but it is more difficult for the split ring 30 to disengage from the upper and lower inner annular grooves 2804 and 2805, and the desire for the split ring 30 to disengage from the upper and lower inner annular grooves 2804 and 2805 will result in a significant jump in the drive current of the motor 9. The working state and the working position of the switch valve cover 31 can be judged by monitoring the driving current of the motor 9, and meanwhile, reference can be provided for starting and stopping and power regulation of the motor 9.
In this embodiment, an intermediate sleeve is sleeved between the central tube 43 and the packing assembly, the central tube 43 and the intermediate sleeve are in transition fit or clearance fit, the intermediate sleeve includes a slip ring joint 33 and a liner tube 36 which are connected up and down, an upper end of the slip ring joint 33 is sleeved between a lower end of the switch sleeve 28 and the central tube 43, an inner diameter of the slip ring joint 33 is smaller than an outer diameter of the switch valve cover 31, a lower end of an inner surface of the switch sleeve 28 is provided with an expanding section, the switch sleeve 28 is in threaded connection with a slip ring retainer ring 34, a bottom inner annular groove 2806 is formed at a lower end of the inner surface of the switch sleeve 28, an outer flange 3301 is arranged at an upper end of the slip ring joint 33, the outer flange 3301 is located in the bottom inner annular groove 2806, a length of the outer flange 3301 is smaller than a length of the bottom inner annular groove 2806 along an axial direction of the central tube 43, and the switch valve cover 31 can push the slip ring joint 33 and the liner tube 36 to move downward. When the switch base 29 is in the upper limit position, the outer flange 3301 abuts the upper end of the bottom inner annular groove 2806; when the switch base 29 is in the lower limit position, the outer flange 3301 abuts the lower end of the bottom inner annular groove 2806.
In this embodiment, the slip ring joint 33 and the liner tube 36 are fixed by a bidirectional connector 35 through a thread connection, the bidirectional connector 35 is sleeved outside the slip ring joint 33 and the liner tube 36, the packing assembly further includes a rubber cylinder upper joint 37, a rubber cylinder lower joint 44 and a cone 40, the rubber cylinder upper joint 37, the rubber cylinder 38, the rubber cylinder lower joint 44, the cone 40, the slips 41 and the slip seat 42 are sequentially connected from top to bottom, a bottom annular cavity 4001 is formed between the cone 40 and the center tube 43, the lower end of the liner tube 36 is located in the bottom annular cavity 4001, the liner tube 36 can move up and down relative to the cone 40, the lower end of the center tube 43 is fixedly connected with the slip seat 42, the rubber cylinder upper joint 37 is clamped or connected with the bidirectional connector 35 through a thread, and the rubber cylinder lower joint 44 is clamped or connected with the cone 40 through a thread.
The effect of casing pipe lies in the middle of the design, when electronic channeling finding leaks the device and needs the deblocking, center tube 43 at first moves down, drives slip seat 42 and moves down, makes the lower extreme of packing element 38 lose the support, realizes the deblocking for the first time. As the central tube 43 continues to move downwards, when the switch valve cover 31 is in contact with the slip ring joint 33, the switch valve cover 31 pushes the slip ring joint 33 to continue to move downwards, so that the glue cylinder 38 can be integrally moved downwards to realize secondary unsealing, and therefore the glue cylinder 38 is ensured to realize unsealing. Preferably, when the split ring 30 is disengaged from the lower inner annular groove 2805, the switch valve cover 31 is just in contact with the slip ring joint 33.
In this embodiment, the outer housing further includes an upper joint 2 and a connecting sleeve 12, the upper joint 2, the connecting sleeve 12, the rotation preventing sleeve 21, the switch sleeve 28 and the slip ring retainer ring 34 are sequentially in threaded connection from top to bottom, and an axis of the upper joint 2, an axis of the connecting sleeve 12, an axis of the rotation preventing sleeve 21, an axis of the switch sleeve 28 and an axis of the slip ring retainer ring 34 coincide. The electric setting and unsealing mechanism further comprises a cable 1, a horse-dragon head 6 and an electronic joint 7, the cable 1, the horse-dragon head 6 and the electronic joint 7, a motor 9, a speed reducer 13, a coupler 16, a screw rod 23, a screw nut 26, a switch matrix 29 and a central pipe 43 are sequentially connected from top to bottom, and the screw nut 26, the switch matrix 29 and the central pipe 43 are sequentially connected through threads. The axis of the motor 9, the axis of the reducer 13, the axis of the coupling 16, the axis of the screw lever 23, the axis of the screw nut 26, the axis of the switch base 29, and the axis of the center tube 43 coincide, and the axis of the switch sleeve 28 coincides with the axis of the switch base 29.
The electric channeling-checking leakage-finding device further comprises a pressure tester 3, a first shearing pin 4, a sixth sealing ring 5, an upper pressing cap 8 and a first anti-rotation pin 10; a first anti-rotation pin block 11, a second seal ring 14; the anti-rotation device comprises a thrust bearing 15, a pressing cap 17, a second anti-rotation pin block 18, a sheath 19, a third sealing ring 20, a fourth sealing ring 22, a baffle ring 24, a ball 25, a fifth sealing ring 27 and a seventh sealing ring 39.
The working process of the electric channeling-checking leakage-finding device (also called as an electric packer) of the invention is described as follows:
And 2, the control terminal is positioned in the cable car, and the electric channeling and leakage finding device is connected with the control terminal on the ground through a cable.
And 3, the control hand sends a seat sealing instruction at the control terminal, and the motor 9 is started.
The motor 9 rotates forwards, so that the screw nut 26, the switch base 29, the central pipe 43, the slip seat 42 and the slips 41 all move upwards synchronously;
in the process that the switch base body 29 moves upwards from the lower limit position, when the central pipe 43 is in contact with the switch valve cover 31, the central pipe 43 can push the switch valve cover 31 to move upwards, the switch valve cover 31 blocks the inner through hole 2902, and the switch valve cover 31 prevents the outer through hole 2803 from being communicated with the inner through hole 2902; when the switch base 29 is located at the upper limit position, the lower end of the switch valve cover 31 is higher than the upper end of the outer through hole 2803, the lower end of the inner through hole 2902 is higher than the lower end of the switch valve cover 31, an upper distance exists between the upper convex ring 2901 and the switch valve cover 31, the position of the outer annular groove 3101 corresponds to the position of the upper inner annular groove 2804, the split ring 30 is radially expanded, and the split ring 30 is clamped between the outer annular groove 3101 and the upper inner annular groove 2804.
In the process that the central tube 43 and the slip seat 42 move upwards from the lower limit position, the rubber sleeve 38 is axially compressed, the diameter of the rubber sleeve 38 is increased to seal the oil sleeve annulus, the slips 41 are opened and clamped to the inner wall of the sleeve, the setting is completed, and the electric channeling-checking and leakage-finding device is in the setting state.
And 4, the control hand sends an unsealing instruction at the control terminal, and the motor 9 is started.
The motor 9 rotates reversely, so that the screw nut 26, the switch base 29, the central pipe 43, the slip seat 42 and the slips 41 all move downwards synchronously;
the central tube 43, the slip seat 42 and the slips 41 move downwards, so that the lower end of the rubber cylinder 38 is unsupported, and primary unsealing is realized; during the downward movement of the switch base 29 from the upper limit position; when the lower end of the inner through hole 2902 is lower than the lower end of the switch valve cover 31, the outer through hole 2803 communicates with the inner through hole 2902 through the lower annular cavity 2802; when the upper convex ring 2901 contacts with the switch valve cover 31, the switch base 29 can push the switch valve cover 31 to move downwards, and the switch base 29 can block the outer through hole 2803; when the position of the outer annular groove 3101 corresponds to the position of the lower inner annular groove 2805, the split ring 30 is radially expanded, and the split ring 30 is clamped between the outer annular groove 3101 and the lower inner annular groove 2805; the upper collar 2901 pushes the switch valve cover 31 to continue moving downward, the switch valve cover 31 and the split ring 30 overcome the obstruction of the lower inner annular groove 2805 and pass over the lower inner annular groove 2805; after the split ring 30 passes through the lower inner annular groove 2805, the switch valve cover 31 abuts against the slip ring joint 33, the switch valve cover 31 pushes the slip ring joint 33 to move downwards continuously, the rubber sleeve 38 can move downwards integrally, secondary deblocking is achieved, and therefore deblocking of the rubber sleeve 38 is achieved. Namely, the rubber cylinder 38 which is compressed and deformed is restored to the original shape, and the oil sleeve annular passage is unblocked.
When the switch base 29 is in the lower limit position, the switch valve cover 31 is positioned below the outer through hole 2803, and a lower space exists between the switch valve cover 31 and the center pipe 43.
And 5, using the cable 1 to play the electric channeling-checking leakage-finding device and taking the device out of a wellhead.
And 6, finishing the operation.
For ease of understanding and description, the present invention is described in terms of a combination of absolute positional relationships, wherein the directional word "up" denotes the upper direction in fig. 1 and "down" denotes the lower direction in fig. 1. The present invention has been described in terms of the viewer's perspective, but the above directional terms should not be construed or interpreted as limiting the scope of the invention.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features and the technical schemes, and the technical schemes can be freely combined and used.
Claims (10)
1. The utility model provides an electronic test scurries and looks for hourglass device, a serial communication port, electronic test scurries and looks for hourglass device and includes electronic setting deblocking mechanism and the shell body that the endotheca was established, electronic setting deblocking mechanism contains motor (9), reduction gear (13), shaft coupling (16), ball and center tube (43) that set gradually from the top down, and center tube (43) overcoat is equipped with the packing element, packing element contains packing element (38) and slip seat (42) that set up from top to bottom, the packing element is located the below of shell body is provided with slips (41) on slip seat (42), and motor (9) can drive center tube (43) and remove and make along vertical direction the packing element is in the setting state or deblocking state.
2. The electric channeling and leakage finding device according to claim 1, wherein the outer shell comprises an anti-rotation sleeve (21) and a switch sleeve (28) which are connected up and down, the ball screw comprises a screw rod (23) and a screw nut (26) which are sleeved inside and outside, the screw nut (26) is sleeved in the anti-rotation sleeve (21), the anti-rotation sleeve (21) can prevent the screw nut (26) from rotating, the screw nut (26) is connected with a central pipe (43) through a switch base body (29), the switch base body (29) is a tubular structure with the upper end closed and the lower end open, and the switch base body (29) is located in the switch sleeve (28).
3. The electric channeling and leakage finding device as claimed in claim 2, wherein the upper end of the switch sleeve (28) is fixedly sleeved outside the lower end of the rotation preventing sleeve (21), an upper annular cavity (2801) is formed between the screw nut (26) and the switch sleeve (28), an upper convex ring (2901) is arranged outside the upper portion of the switch base body (29), a lower annular cavity (2802) is formed between the switch base body (29) and the switch sleeve (28), and the upper end of the central tube (43) is located between the switch base body (29) and the switch sleeve (28).
4. The electric channeling and leakage finding device according to claim 3, wherein an inner through hole (2902) is formed in the middle of the switch base body (29), a switch valve cover (31) is sleeved between the switch base body (29) and the switch sleeve (28), the switch valve cover (31) is of a tubular structure, the switch valve cover (31) is located in the lower annular cavity (2802), the switch valve cover (31) is in clearance fit or transition fit with the switch base body (29), the switch valve cover (31) is in clearance fit or transition fit with the switch sleeve (28), the outer diameter of the central tube (43) is larger than the inner diameter of the switch valve cover (31), the outer diameter of the upper convex ring (2901) is larger than the inner diameter of the switch valve cover (31), and an outer through hole (2803) is formed in the middle of the switch sleeve (28).
5. The electric channeling and leakage detecting device according to claim 4, wherein a first sealing ring (32) is arranged between the switch valve cover (31) and the switch base body (29), the length of the switch valve cover (31) is smaller than the distance between the central pipe (43) and the upper convex ring (2901) along the axial direction of the switch sleeve (28), the length of the switch valve cover (31) is smaller than or equal to the distance between the upper end of the inner through hole (2902) and the upper convex ring (2901), and the length of the switch valve cover (31) is larger than or equal to the distance between the upper end of the inner through hole (2902) and the central pipe (43).
6. The electric channeling and leakage finding device according to claim 5, wherein during the upward movement of the switch base body (29) from the lower limit position, when the central tube (43) contacts the switch valve cover (31), the central tube (43) can push the switch valve cover (31) to move upward, the switch valve cover (31) blocks the inner through hole (2902), and the switch valve cover (31) prevents the outer through hole (2803) from communicating with the inner through hole (2902); when the switch base body (29) is located at the upper limit position, the lower end of the switch valve cover (31) is higher than the upper end of the outer through hole (2803), the lower end of the inner through hole (2902) is higher than the lower end of the switch valve cover (31), and an upper space exists between the upper convex ring (2901) and the switch valve cover (31).
7. The electric channeling-detecting leakage-detecting device according to claim 5, wherein the outer through hole (2803) communicates with the inner through hole (2902) through the lower annular cavity (2802) when the lower end of the inner through hole (2902) is lower than the lower end of the switch valve cover (31) during the downward movement of the switch base body (29) from the upper limit position; when the upper convex ring (2901) is in contact with the switch valve cover (31), the switch base body (29) can push the switch valve cover (31) to move downwards, and the switch base body (29) can block the outer through hole (2803); when the switch base body (29) is located at the lower limit position, the switch valve cover (31) is located below the outer through hole (2803), and a lower distance exists between the switch valve cover (31) and the central pipe (43).
8. The electric channeling and leakage finding device according to claim 4, wherein an outer annular groove (3101) is formed in the outer surface of the switch valve cover (31), a split ring (30) is sleeved in the outer annular groove (3101), chamfers are arranged at the upper end and the lower end of the outer surface of the split ring (30), an upper inner annular groove (2804) and a lower inner annular groove (2805) are formed in the inner surface of the switch sleeve (28) in an up-and-down mode, the upper inner annular groove (2804) is located above the outer through hole (2803), the lower inner annular groove (2805) is located below the outer through hole (2803), when the switch base body (29) is located at an upper limit position, the outer annular groove (3101) corresponds to the upper inner annular groove (2804), the split ring (30) expands in the radial direction, and the split ring (30) is clamped between the outer annular groove (3101) and the upper inner annular groove (2804); during the downward movement of the switch base body (29) from the upper limit position, the switch valve cover (31) and the split ring (30) can overcome the obstruction of the lower inner annular groove (2805) and cross the lower inner annular groove (2805).
9. The electric channeling and leakage finding device according to claim 4, wherein an intermediate sleeve is sleeved between the central tube (43) and the packing assembly, the intermediate sleeve comprises a slip ring joint (33) and a lining tube (36) which are connected up and down, the upper end of the slip ring joint (33) is sleeved between the lower end of the switch sleeve (28) and the central tube (43), the inner diameter of the slip ring joint (33) is smaller than the outer diameter of the switch valve cover (31), the lower end of the inner surface of the switch sleeve (28) is provided with an expanding section, the switch sleeve (28) is connected with a slip ring (34), the lower end of the inner surface of the switch sleeve (28) forms a bottom inner annular groove (2806), the upper end of the slip ring joint (33) is provided with an outer flange (3301), the outer flange (3301) is positioned in the bottom inner annular groove (2806), and the length of the outer flange (3301) is smaller than the length of the bottom inner annular groove (2806) along the axial direction of the central tube (43), the switch valve cover (31) can push the slip ring joint (33) and the liner tube (36) to move downwards.
10. The electric channeling and leakage finding device according to claim 9, wherein the slip ring joint (33) and the lining pipe (36) are fixedly connected through a bidirectional connector (35), the packer assembly further comprises a rubber sleeve upper joint (37), a rubber sleeve lower joint (44) and a cone (40), the rubber sleeve upper joint (37), the rubber sleeve (38), the rubber sleeve lower joint (44), the cone (40), the slip (41) and the slip seat (42) are sequentially connected from top to bottom, a bottom annular cavity (4001) is formed between the cone (40) and the central pipe (43), the lower end of the lining pipe (36) is located in the bottom annular cavity (4001), the lower end of the central pipe (43) is fixedly connected with the slip seat (42), the rubber sleeve upper joint (37) is clamped with the bidirectional connector (35), and the rubber sleeve lower joint (44) is clamped with the cone (40).
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| CN202010714985.XA CN113969760B (en) | 2020-07-23 | 2020-07-23 | Electric channeling checking and leakage finding device |
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| CN202010714985.XA CN113969760B (en) | 2020-07-23 | 2020-07-23 | Electric channeling checking and leakage finding device |
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| CN113969760B CN113969760B (en) | 2023-08-22 |
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Cited By (1)
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| CN114934756A (en) * | 2022-06-28 | 2022-08-23 | 中核通辽铀业有限责任公司 | In-well plugging structure, layered liquid pumping quantity measuring device and measuring method thereof |
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| CN113969760B (en) | 2023-08-22 |
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