CN115370311A - Diameter-variable deblocking device and method suitable for auxiliary descending of passive magnetic steering tool - Google Patents
Diameter-variable deblocking device and method suitable for auxiliary descending of passive magnetic steering tool Download PDFInfo
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- CN115370311A CN115370311A CN202210998758.3A CN202210998758A CN115370311A CN 115370311 A CN115370311 A CN 115370311A CN 202210998758 A CN202210998758 A CN 202210998758A CN 115370311 A CN115370311 A CN 115370311A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000009471 action Effects 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000003044 adaptive effect Effects 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 239000004576 sand Substances 0.000 abstract description 6
- 238000003780 insertion Methods 0.000 abstract description 5
- 230000037431 insertion Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 10
- 230000006978 adaptation Effects 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000010802 sludge 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
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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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention relates to a diameter-variable deblocking device and a method suitable for auxiliary downward insertion of a passive magnetic steering tool, wherein the diameter-variable deblocking device comprises a driving assembly, a first pressure-bearing sleeve, a second pressure-bearing sleeve, a first connecting rod, a second connecting rod, a first shaft rod, a second shaft rod and a bottom connecting sleeve, wherein the first pressure-bearing sleeve and the second pressure-bearing sleeve are respectively sleeved on the first shaft rod in a sliding manner, the first pressure-bearing sleeve is positioned above the second pressure-bearing sleeve, and two ends of the first connecting rod are respectively hinged with the first pressure-bearing sleeve and the second pressure-bearing sleeve; the driving end of the driving assembly is connected with and drives the first pressure-bearing sleeve to extrude or stretch the first connecting rod along the axial direction of the shaft lever so as to open or close the first connecting rod; the second shaft lever is coaxially fixed below the first shaft lever, the lower end of the second shaft lever is sleeved in the bottom connecting sleeve in a sliding mode and is elastically connected with the bottom wall of the bottom connecting sleeve, and two ends of the second connecting rod are connected with the second shaft lever and the top end of the bottom connecting sleeve respectively. The invention can easily and quickly finish the operation of releasing the card when the card and the sand card are stuck.
Description
Technical Field
The invention relates to the field of oil exploitation, in particular to but not limited to an underground unfreezing technology, and particularly relates to a variable-diameter unfreezing device and method suitable for auxiliary descending of a passive magnetic guide tool.
Background
In recent years, with the large development of oil fields, the well conditions of construction are more and more complex, the situations of old wells and abandoned wells in China are more and more, high-pressure blowout accidents are more and more, and special wells such as rescue wells, old wells of gas storage reservoirs and the like are dug for the blowout accidents in China. At present, a downhole tool for positioning well drilling by adopting a passive magnetic signal is provided, and well drilling and killing processing for repositioning an accident well is carried out. When the magnetic guide tool is used for field construction operation, accidents such as blockage, blockage by rock debris, oil sludge adhesion and the like can occur when the magnetic guide tool is placed downwards due to improper technical measures, irregular borehole size, collapse of rock on a borehole wall and the like in the lifting and placing operation process. At this moment, a tool is urgently needed to assist the magnetic guiding tool in releasing the blockage, so that the normal construction of the magnetic guiding tool is ensured.
The traditional way of releasing the card is to repeatedly lift and release the card. Due to the characteristics of the tool, the problems cannot be solved when the tool is stuck, stuck with sand and blocked by a large-belly well bore and lifted and lowered, the safety risk is caused while the construction time is delayed, and the tool falls into a well in serious cases. Therefore, the invention is necessary to invent an up-and-down variable-diameter unfreezing device suitable for being assisted by a passive magnetic guiding tool to run in so as to realize 'one-time measurement' of the passive magnetic guiding tool.
Disclosure of Invention
The invention provides a variable-diameter unfreezing device and method suitable for auxiliary insertion of a passive magnetic guiding tool, and aims to solve one or more of the technical problems.
The technical scheme for solving the technical problems is as follows: the diameter-variable deblocking device suitable for auxiliary downward insertion of a passive magnetic steering tool comprises a driving assembly, a first pressure-bearing sleeve, a second pressure-bearing sleeve, a first connecting rod, a second connecting rod, a first shaft rod, a second shaft rod and a bottom connecting sleeve, wherein the first pressure-bearing sleeve and the second pressure-bearing sleeve are respectively sleeved on the first shaft rod in a sliding mode, the first pressure-bearing sleeve is located above the second pressure-bearing sleeve, and two ends of the first connecting rod are respectively hinged to the first pressure-bearing sleeve and the second pressure-bearing sleeve; the driving end of the driving assembly is connected with and drives the first pressure-bearing sleeve to axially extrude or stretch the first connecting rod along the first shaft, so that the first connecting rod is opened or closed;
the second shaft lever is coaxially fixed below the first shaft lever, the lower end of the second shaft lever is sleeved in the bottom connecting sleeve in a sliding mode and is elastically connected with the bottom wall of the bottom connecting sleeve, and two ends of the second connecting rod are connected with the second shaft lever and the top end of the bottom connecting sleeve respectively.
The invention has the beneficial effects that: the diameter-variable de-jamming device adopts the upper and lower sections of shaft levers, and the connecting rods are respectively arranged on the shaft levers, so that when the downhole operation tool is jammed, the first connecting rod or the second connecting rod can be opened to support the downhole operation tool, and the position of the jammed position is changed to quickly and safely de-jam the downhole operation tool; through setting up the axial motion of first pressure-bearing sleeve of drive assembly drive, the device is when gluing card, sand card, can be fast completion easily and unfreeze the operation.
On the basis of the technical scheme, the invention can be improved as follows.
Furthermore, the first connecting rod comprises two first rod bodies, the two ends of each first rod body are respectively a hinged end and a free end, the hinged ends of the two first rod bodies are hinged with each other, and the free ends of the two first rod bodies are respectively hinged on the first pressure-bearing sleeve and the second pressure-bearing sleeve;
the first connecting rod is provided with at least one first roller, and the first rollers are arranged close to the hinged ends of the two first rod bodies or directly assembled at the hinged ends of the two first rod bodies.
The beneficial effect of adopting the further scheme is that: the first connecting rod adopts two first rod bodies, and the first roller is arranged on the first rod bodies, so that the releasing process of the magnetic guide tool is more stable and reliable. And make the device under high velocity of flow, high temperature, high pressure operating mode, can effective strutting arrangement, prevent to take place skew and vibrations phenomenon.
Furthermore, the second connecting rod comprises two second rod bodies, the two ends of the second connecting rod are respectively a hinged end and a free end, the hinged ends of the two second rod bodies are hinged with each other, and the free ends of the two second rod bodies are respectively hinged to the second rod and the top end of the bottom connecting sleeve;
the second connecting rod is provided with at least one second roller, and the second roller is arranged close to the hinged ends of the two second connecting rods or is directly assembled at the hinged ends of the two second connecting rods.
The beneficial effect of adopting the further scheme is that: the second connecting rod adopts two second body of rods to set up the second gyro wheel on the second body of rod, make the magnetic steering instrument unblock process more reliable and stable. And make the device under high velocity of flow, high temperature, high pressure operating mode, can effective strutting arrangement, prevent to take place skew and vibrations phenomenon.
Further, the driving assembly comprises a driving motor and a worm and gear mechanism, the output end of the driving motor is connected with the power input end of the worm and gear mechanism, the worm of the worm and gear mechanism is in threaded connection with the first pressure-bearing sleeve, and the first pressure-bearing sleeve is sleeved at the upper end of the first shaft rod in a sliding mode.
The beneficial effect of adopting the above further scheme is: the worm and gear mechanism is matched with the driving motor to realize the axial movement of the first pressure-bearing sleeve, so that the movement process is more stable and reliable.
Further, be equipped with first joint sleeve on the upper end lateral wall of first axostylus axostyle, be equipped with the first step of arranging up on the telescopic lateral wall of first joint, it is equipped with first sliding sleeve to slide in the first pressure-bearing sleeve, first pressure-bearing sleeve's upper end inside wall with be equipped with first spring between the first sliding sleeve, first sliding sleeve establishes on the telescopic lateral wall of first joint and can with first step adaptation butt, first spring housing is established just be located on the first joint sleeve the top of first step.
The beneficial effect of adopting the further scheme is that: through setting up first spring, make first joint sleeve can for first axle lever elastic motion, provide elastic buffer for opening and the unfreezing process of first connecting rod.
Further, be equipped with second joint sleeve on the middle part lateral wall of first axostylus axostyle, be equipped with the second step of arranging down on the telescopic lateral wall of second joint, it is equipped with the second sliding sleeve to slide in the second pressure-bearing sleeve, the telescopic lower extreme inside wall of second pressure-bearing with be equipped with the second spring between the second sliding sleeve, the second sliding sleeve slip cover is established on the telescopic lateral wall of second joint and can with second step adaptation butt, the second spring housing is established just be located the below of second step on the second joint sleeve.
The beneficial effect of adopting the further scheme is that: through setting up the second spring, make second joint sleeve can be for second axle lever elastic motion, for the expansion of first connecting rod and the elasticity buffering is provided to the unblock process.
Furthermore, a third step arranged upwards is arranged on the outer side wall of the middle of the first shaft rod, and the lower end of the second clamping sleeve can be in adaptive butt joint with the third step.
The beneficial effect of adopting the further scheme is that: through setting up the third step, when first connecting rod folds, can carry out the adaptation for second joint sleeve lower extreme spacing.
Furthermore, the number of the first connecting rods is more than two, and the two first connecting rods are arranged on two opposite sides of the first shaft rod in a central symmetry manner; the number of the second connecting rods is more than two, and the two second connecting rods are arranged on two opposite sides of the second shaft lever in a central symmetry manner;
the first shaft lever and the second shaft lever are of an integral structure, or the first shaft lever and the second shaft lever are detachably connected through a connecting piece.
The beneficial effect of adopting the above further scheme is: two first connecting rods and two second connecting rods are adopted, so that the unfreezing range is wider.
Furthermore, a fourth step which is arranged upwards is arranged on the second shaft rod, and a limit ring edge which can be in adaptive butt joint with the fourth step is arranged on the inner side wall of the bottom connecting sleeve; the lower end of the second shaft lever is elastically connected with the bottom wall of the bottom connecting sleeve through a third spring.
The beneficial effect of adopting the further scheme is that: through setting up the fourth step, avoid bottom connecting sleeve to transfer under self action of gravity unlimited.
The diameter-variable unfreezing method suitable for assisting in descending of the passive magnetic guiding tool is achieved by the diameter-variable unfreezing device, the passive magnetic guiding tool is arranged in a second shaft rod of the diameter-variable unfreezing device, and the method comprises the following steps:
when the diameter-variable unfreezing device passes through the well without barriers in the process of downhole operation, the bottom connecting sleeve is elastically connected to the bottom of the second shaft lever under the action of self gravity;
when the lower part of the downhole operation of the variable-diameter unfreezing device meets a blockage, the bottom connecting sleeve moves upwards under the action of the barrier, so that the second connecting rod is circumferentially opened, the position of the bottom connecting sleeve is righted, and the second shaft lever of the variable-diameter unfreezing device deviates from the underground blockage meeting position, so that the unfreezing action is completed;
when the upper part of the variable-diameter unfreezing device during downhole operation meets the blockage, the driving assembly drives the first pressure-bearing sleeve to move downwards, so that the first connecting rod is circumferentially opened, the upper half part of the variable-diameter unfreezing device deviates from the position of the blockage in the downhole operation, and the unfreezing actions are completed.
The invention has the beneficial effects that: according to the unfreezing method, when the underground operation tool is blocked, the first connecting rod or the second connecting rod can be opened to support the underground operation tool, and the position of the blocking point is changed, so that the underground operation tool can be quickly and safely unfreezed; through setting up the axial motion of the first pressure-bearing sleeve of drive assembly drive, the device is gluing card, sand card in the time, can be fast completion unfreezing operation easily.
Drawings
FIG. 1 is a schematic view of the internal structure of the variable-diameter jam clearing device in a first state;
FIG. 2 is a schematic diagram of the internal structure of the variable diameter deblocking device of the present invention in a second state;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an enlarged view of the portion B in FIG. 2;
FIG. 5 is a schematic view of the internal structure of the variable diameter stuck freeing device in a third state according to the present invention;
FIG. 6 is an enlarged view of portion A of FIG. 5;
FIG. 7 is an enlarged view of the portion B of FIG. 5;
FIG. 8 is a schematic diagram illustrating an internal structure of a fourth state of the variable diameter deblocking device according to the present invention;
FIG. 9 is a first schematic view of the internal structure of the variable-diameter jam clearing device of the present invention in use;
fig. 10 is a schematic diagram of the internal structure of the variable-diameter jam clearing device in the use state.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a drive motor; 11. a worm gear; 12. a worm;
2. a first pressure-bearing sleeve; 21. a first spring; 22. a first sliding sleeve;
3. a second pressure-bearing sleeve; 31. a second spring; 32. a second sliding sleeve;
4. a first link; 41. a first rod body; 42. a first roller;
5. a second link; 51. a second rod body; 52. a second roller;
6. a first shaft lever; 61. a first clamping sleeve; 62. a first step; 63. a second clamping sleeve; 64. a second step; 65. a third step;
7. a second shaft lever; 71. a fourth step; 72. a limiting flange;
8. the bottom is connected with a sleeve; 81. a third spring; 82. a limit ring edge; 9. a connecting member.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 10, the variable diameter deblocking device suitable for auxiliary insertion of a passive magnetic steering tool in this embodiment includes a driving assembly, a first pressure-bearing sleeve 2, a second pressure-bearing sleeve 3, a first connecting rod 4, a second connecting rod 5, a first shaft rod 6, a second shaft rod 7, and a bottom connecting sleeve 8, where the first pressure-bearing sleeve 2 and the second pressure-bearing sleeve 3 are respectively slidably sleeved on the first shaft rod 6, the first pressure-bearing sleeve 2 is located above the second pressure-bearing sleeve 3, and two ends of the first connecting rod 4 are respectively hinged to the first pressure-bearing sleeve 2 and the second pressure-bearing sleeve 3; the driving end of the driving assembly is connected with and drives the first pressure-bearing sleeve 2 to axially extrude or stretch the first connecting rod 4 along the first shaft rod 6, so that the first connecting rod 4 is opened or closed; the second shaft lever 7 is coaxially fixed below the first shaft lever 6, the lower end of the second shaft lever 7 is slidably sleeved in the bottom connecting sleeve 8 and is elastically connected with the bottom wall of the bottom connecting sleeve 8, and two ends of the second connecting rod 5 are respectively connected with the second shaft lever 7 and the top end of the bottom connecting sleeve 8. This embodiment is through installing a device additional in magnetism steering operation instrument outside, and when it met the resistance, upper and lower connecting rod circumference opened the support wall of a well, and the change meets the resistance point position, makes the quick safety of magnetism steering operation instrument unfreeze.
The second shaft rod 7 of the embodiment can be of a hollow structure and used for containing a passive magnetic guiding tool, and the overall size of the device can be reduced when the magnetic guiding tool unfreezing device works normally.
As shown in fig. 3, 4, 6 and 7, in a preferred embodiment of the present invention, the first link 4 includes two first rod bodies 41, two ends of the first rod bodies 41 are respectively a hinged end and a free end, the hinged ends of the two first rod bodies 41 are hinged to each other, and the free ends of the two first rod bodies 41 are hinged to the first pressure-bearing sleeve 2 and the second pressure-bearing sleeve 3 respectively; the first link 4 is provided with at least one first roller 42, and the first roller 42 is disposed adjacent to the hinged ends of the two first rods 41 or directly assembled at the hinged ends of the two first rods 41. The first connecting rod adopts two first rod bodies, and the first roller is arranged on the first rod body, so that the releasing process of the magnetic guide tool is more stable and reliable. And make the device under high velocity of flow, high temperature, high pressure operating mode, effectively strutting arrangement prevents to take place skew and vibrations phenomenon.
As shown in fig. 3 and fig. 6, a preferable scheme of this embodiment is that a first roller 42 is disposed on each first rod 41, and a first roller 42 is disposed at a position of each first rod 41 adjacent to the hinged end, so that the first shaft has more contact points with the borehole wall, and the jam releasing capability is stronger and more stable. The first rod 41 may be a straight rod or a slightly bent rod.
As shown in fig. 3, 4, 6 and 7, in a preferred embodiment of the present invention, the second connecting rod 5 includes two second rod bodies 51, two ends of the second rod bodies 51 are respectively a hinged end and a free end, the hinged ends of the two second rod bodies 51 are hinged to each other, and the free ends of the two second rod bodies 51 are hinged to the second shaft 7 and the top end of the bottom connecting sleeve 8; the second connecting rod 5 is provided with at least one second roller 52, and the second roller 52 is arranged adjacent to the hinged end of the two second connecting rods 5 or directly assembled at the hinged end of the two second connecting rods 5. The second connecting rod adopts two second rod bodies, and the second roller is arranged on the second rod body, so that the releasing process of the magnetic guide tool is more stable and reliable. And make the device under high velocity of flow, high temperature, high pressure operating mode, effectively strutting arrangement prevents to take place skew and vibrations phenomenon.
As shown in fig. 4 and fig. 7, in a preferred embodiment of the present invention, each second rod 51 is provided with a second roller 52, and the hinged end of each second rod 51 is provided with a second roller 52. The second roller 52 may be provided at the hinge shaft of the two second rods 51. The second rod 51 may be a straight structure or a slightly bent structure.
Specifically, the length of the second rod 51 of the present embodiment is greater than the length of the first rod 41, so that the position of the bottom meeting point of the second rod 51 can be changed.
As shown in fig. 1 to 10, the driving assembly of this embodiment includes a driving motor 1 and a worm and gear mechanism, an output end of the driving motor 1 is connected to a power input end of the worm and gear mechanism, a worm 12 of the worm and gear mechanism is in threaded connection with the first pressure-bearing sleeve 2, and the first pressure-bearing sleeve 2 is slidably sleeved on an upper end of the first shaft lever 6. The input end of a worm wheel 11 of the worm wheel and worm mechanism is connected with the output end of the driving motor 1, and the output end of the worm wheel 11 is connected with a worm 12. The worm and gear mechanism is matched with the driving motor to realize the axial movement of the first pressure-bearing sleeve, so that the movement process is more stable and reliable.
As shown in fig. 3, fig. 4, fig. 6, and fig. 7, a preferable scheme of this embodiment is that a first clamping sleeve 61 is disposed on an outer side wall of an upper end of the first shaft lever 6, a first step 62 disposed upward is disposed on an outer side wall of the first clamping sleeve 61, a first sliding sleeve 22 is slidably disposed in the first pressure-bearing sleeve 2, a first spring 21 is disposed between an inner side wall of an upper end of the first pressure-bearing sleeve 2 and the first sliding sleeve 22, the first sliding sleeve 22 is slidably disposed on an outer side wall of the first clamping sleeve 61 and can abut against the first step 62, and the first spring 21 is disposed on the first clamping sleeve 61 and located above the first step 62. Through setting up first spring, make first joint sleeve can be for first axle lever elastic movement, for the process of opening and the unfreezing of first connecting rod provides elastic buffer.
As shown in fig. 3, fig. 4, fig. 6, and fig. 7, a preferable scheme of this embodiment is that a second clamping sleeve 63 is disposed on an outer side wall of a middle portion of the first shaft rod 6, a second step 64 disposed downward is disposed on an outer side wall of the second clamping sleeve 63, a second sliding sleeve 32 is slidably disposed in the second pressure-bearing sleeve 3, a second spring 31 is disposed between an inner side wall of a lower end of the second pressure-bearing sleeve 3 and the second sliding sleeve 32, the second sliding sleeve 32 is slidably disposed on an outer side wall of the second clamping sleeve 63 and can abut against the second step 64, and the second spring 31 is disposed on the second clamping sleeve 63 and is located below the second step 64. Through setting up the second spring, make second joint sleeve can for second axle lever elastic motion, provide elastic buffer for opening and the unfreezing process of first connecting rod.
In a preferred embodiment of this embodiment, the first clamping sleeve 61 and the second clamping sleeve 63 may adopt a semi-ring structure, so as to be conveniently clamped onto the first shaft 6.
As shown in fig. 3, 4, 6 and 7, a preferable scheme of this embodiment is that a third step 65 arranged upward is provided on an outer side wall of a middle portion of the first shaft rod 6, and a lower end of the second clamping sleeve 63 can be in adaptive abutment with the third step 65. Through setting up the third step, when first connecting rod folds, can carry out the adaptation for second joint sleeve lower extreme spacing.
As shown in fig. 3, 4, 6 and 7, in a preferred embodiment of the present invention, there are two first connecting rods 4, and the two first connecting rods 4 are arranged on opposite sides of the first shaft rod 6 in a central symmetry manner; the number of the second connecting rods 5 is two, and the two second connecting rods 5 are arranged on two opposite sides of the second shaft lever 7 in a central symmetry manner; the first shaft lever 6 and the second shaft lever 7 are of an integral structure, or the first shaft lever 6 and the second shaft lever 7 are detachably connected through a connecting piece 9. The connecting member 9 may adopt a double-headed nut structure. Two first connecting rods and two second connecting rods are adopted, so that the unfreezing range is wider.
As shown in fig. 3, 4, 6 and 7, a preferable scheme of this embodiment is that an upward-arranged fourth step 71 is disposed on the second shaft rod 7, and a limit ring 82 capable of being in adaptive abutment with the fourth step 71 is disposed on an inner side wall of the bottom connecting sleeve 8; the lower end of the second shaft rod 7 is elastically connected with the bottom wall of the bottom connecting sleeve 8 through a third spring 81. The fourth step 71 may adopt a slope structure, and the slope angle may be different from 15 ° to 90 °. Through setting up the fourth step, avoid bottom connecting sleeve to transfer under self action of gravity unlimited.
As shown in fig. 4, the second shaft rod 7 of this embodiment is provided with a limiting flange 72, and the upper end of the second connecting rod 5 is hinged to the limiting flange 72. The limiting flange 72 can be fixed on the second shaft rod 7, and can also be connected on the second shaft rod 7 in a sliding manner, and when the limiting flange 72 is connected on the second shaft rod 7 in a sliding manner, the limiting flange can be limited by the connecting piece 9.
The diameter-variable unfreezing device of the embodiment can effectively support the device under the working conditions of high flow speed, high temperature and high pressure, and prevents the phenomena of deviation and vibration. When the vertical diameter-variable unfreezing device which is assisted by the passive magnetic guiding tool to run in is in a big dog-leg or big-belly well hole, the blockage position can be efficiently changed, and the device is quickly and safely unfreezed.
The diameter-variable unfreezing device of the embodiment adopts the upper and lower sections of shaft levers, and the shaft levers are respectively provided with the connecting rods, so that when the downhole operation tool encounters a blockage, the first connecting rod or the second connecting rod can be opened to support the downhole operation tool, and the position of the encountered blockage is changed to enable the downhole operation tool to be quickly and safely unfreezed; through setting up the axial motion of the first pressure-bearing sleeve of drive assembly drive, the device is gluing card, sand card in the time, can be fast completion unfreezing operation easily.
The embodiment also provides a diameter-variable unfreezing method suitable for auxiliary downward insertion of a passive magnetic guiding tool, which is realized by adopting the diameter-variable unfreezing device, wherein the passive magnetic guiding tool is arranged in a second shaft rod 7 of the diameter-variable unfreezing device, and the method comprises the following steps:
when the variable-diameter unlocking device passes through the underground operation without barriers, the bottom connecting sleeve 8 is elastically connected to the bottom of the second shaft lever 7 under the action of the gravity of the bottom connecting sleeve, and the third spring 81 is in an extension state;
when the lower part of the downhole operation of the variable-diameter unfreezing device meets a blockage (the blockage point is an E point, as shown in figure 9), the bottom connecting sleeve 8 moves upwards under the action of the barrier, so that the second connecting rod 5 is circumferentially opened, the position of the bottom connecting sleeve 8 is righted, and the second shaft lever 7 of the variable-diameter unfreezing device deviates from the underground blockage position, so that the unfreezing action is completed;
when the upper part of the variable-diameter unfreezing device during downhole operation meets the sticky blockage (the blockage part is an F point, as shown in figure 10), the driving assembly drives the first pressure-bearing sleeve 2 to move downwards, so that the first connecting rod 4 is circumferentially opened, the upper half part of the variable-diameter unfreezing device deviates from the position of the sticky blockage under the well, and the unfreezing actions are completed.
According to the jam releasing method, when the underground operation tool is blocked, the first connecting rod or the second connecting rod can be opened to support the underground operation tool, and the position of the blocking point is changed to enable the underground operation tool to be quickly and safely released from the jam; through setting up the axial motion of the first pressure-bearing sleeve of drive assembly drive, the device is gluing card, sand card in the time, can be fast completion unfreezing operation easily.
In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The diameter-variable unblocking device suitable for assisting in descending of a passive magnetic steering tool is characterized by comprising a driving assembly, a first pressure-bearing sleeve, a second pressure-bearing sleeve, a first connecting rod, a second connecting rod, a first shaft rod, a second shaft rod and a bottom connecting sleeve, wherein the first pressure-bearing sleeve and the second pressure-bearing sleeve are respectively sleeved on the first shaft rod in a sliding mode, the first pressure-bearing sleeve is located above the second pressure-bearing sleeve, and two ends of the first connecting rod are respectively hinged to the first pressure-bearing sleeve and the second pressure-bearing sleeve; the driving end of the driving assembly is connected with and drives the first pressure-bearing sleeve to extrude or stretch the first connecting rod axially along the first shaft, so that the first connecting rod is opened or closed;
the second shaft lever is coaxially fixed below the first shaft lever, the lower end of the second shaft lever is sleeved in the bottom connecting sleeve in a sliding mode and is elastically connected with the bottom wall of the bottom connecting sleeve, and two ends of the second connecting rod are connected with the second shaft lever and the top end of the bottom connecting sleeve respectively.
2. The device for releasing the diameter of the passive magnetic steering tool for assisting in descending is characterized in that the first connecting rod comprises two first rod bodies, the two ends of the first rod bodies are respectively a hinged end and a free end, the hinged ends of the two first rod bodies are hinged with each other, and the free ends of the two first rod bodies are respectively hinged on a first pressure-bearing sleeve and a second pressure-bearing sleeve;
the first connecting rod is provided with at least one first roller, and the first roller is arranged close to the hinged ends of the two first rod bodies or directly assembled at the hinged ends of the two first rod bodies.
3. The device for releasing the diameter of the passive magnetic steering tool for assisting in descending the card as claimed in claim 1, wherein the second link rod comprises two second rod bodies, the two ends of the second link rod are respectively a hinged end and a free end, the hinged ends of the two second rod bodies are hinged with each other, and the free ends of the two second rod bodies are respectively hinged on the second rod body and the top end of the bottom connecting sleeve;
the second connecting rods are provided with at least one second roller, and the second rollers are arranged close to the hinged ends of the two second connecting rods or are directly assembled at the hinged ends of the two second connecting rods.
4. The diameter-variable unblocking apparatus suitable for assisting in tripping of a passive magnetic steering tool according to claim 1, wherein the driving assembly includes a driving motor and a worm and gear mechanism, an output end of the driving motor is connected to a power input end of the worm and gear mechanism, a worm of the worm and gear mechanism is in threaded connection with the first pressure-bearing sleeve, and the first pressure-bearing sleeve is slidably sleeved on an upper end of the first shaft rod.
5. The variable-diameter releasing device suitable for being assisted to be driven in by a passive magnetic guiding tool is characterized in that a first clamping sleeve is arranged on the outer side wall of the upper end of the first shaft rod, a first step arranged upwards is arranged on the outer side wall of the first clamping sleeve, a first sliding sleeve is arranged in the first pressure-bearing sleeve in a sliding mode, a first spring is arranged between the inner side wall of the upper end of the first pressure-bearing sleeve and the first sliding sleeve, the first sliding sleeve is sleeved on the outer side wall of the first clamping sleeve in a sliding mode and can abut against the first step in an adaptive mode, and the first spring is sleeved on the first clamping sleeve and located above the first step.
6. The variable-diameter releasing device suitable for being assisted to be driven downwards by a passive magnetic steering tool according to claim 1, wherein a second clamping sleeve is arranged on an outer side wall of the middle of the first shaft rod, a second step arranged downwards is arranged on an outer side wall of the second clamping sleeve, a second sliding sleeve is arranged in the second pressure-bearing sleeve in a sliding mode, a second spring is arranged between an inner side wall of the lower end of the second pressure-bearing sleeve and the second sliding sleeve, the second sliding sleeve is sleeved on an outer side wall of the second clamping sleeve in a sliding mode and can abut against the second step in a matching mode, and the second spring is sleeved on the second clamping sleeve and is located below the second step.
7. The variable-diameter unfreezing device suitable for being assisted by a passive magnetic guiding tool to run in is characterized in that a third step arranged upwards is arranged on the outer side wall of the middle of the first shaft rod, and the lower end of the second clamping sleeve can be in adaptive abutment with the third step.
8. The variable-diameter unfreezing device suitable for being assisted by a passive magnetic guiding tool to run in is characterized in that the number of the first connecting rods is more than two, and the two first connecting rods are arranged on two opposite sides of the first shaft rod in a central symmetry mode; the number of the second connecting rods is more than two, and the two second connecting rods are arranged on two opposite sides of the second shaft lever in a central symmetry manner;
the first shaft lever and the second shaft lever are of an integral structure, or the first shaft lever and the second shaft lever are detachably connected through a connecting piece.
9. The variable-diameter unfreezing device suitable for auxiliary descending of the passive magnetic guiding tool is characterized in that a fourth step arranged upwards is arranged on the second shaft rod, and a limiting ring edge capable of being in adaptive abutting joint with the fourth step is arranged on the inner side wall of the bottom connecting sleeve; the lower end of the second shaft rod is elastically connected with the bottom wall of the bottom connecting sleeve through a third spring.
10. The method for releasing the card with the variable diameter suitable for the auxiliary running of the passive magnetic guiding tool is realized by adopting the device for releasing the card with the variable diameter as claimed in any one of claims 1 to 9, the passive magnetic guiding tool is arranged in the second shaft rod of the device for releasing the card with the variable diameter, and the method comprises the following steps:
when the diameter-variable unfreezing device passes through the well without barriers in the process of downhole operation, the bottom connecting sleeve is elastically connected to the bottom of the second shaft lever under the action of self gravity;
when the lower part of the downhole operation of the variable-diameter unfreezing device meets a blockage, the bottom connecting sleeve moves upwards under the action of the barrier, so that the second connecting rod is circumferentially opened, the position of the bottom connecting sleeve is righted, and the second shaft lever of the variable-diameter unfreezing device deviates from the underground blockage meeting position, so that the unfreezing action is completed;
when the upper part of the variable-diameter unfreezing device during downhole operation meets the blockage, the driving assembly drives the first pressure-bearing sleeve to move downwards, so that the first connecting rod is circumferentially opened, the upper half part of the variable-diameter unfreezing device deviates from the position of the blockage in the downhole operation, and the unfreezing actions are completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210998758.3A CN115370311B (en) | 2022-08-19 | 2022-08-19 | Variable diameter unclamping device and method suitable for passive magnetic guiding tool auxiliary insertion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210998758.3A CN115370311B (en) | 2022-08-19 | 2022-08-19 | Variable diameter unclamping device and method suitable for passive magnetic guiding tool auxiliary insertion |
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| Publication Number | Publication Date |
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| CN115370311A true CN115370311A (en) | 2022-11-22 |
| CN115370311B CN115370311B (en) | 2023-06-13 |
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| CN202210998758.3A Active CN115370311B (en) | 2022-08-19 | 2022-08-19 | Variable diameter unclamping device and method suitable for passive magnetic guiding tool auxiliary insertion |
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| CN (1) | CN115370311B (en) |
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|---|---|
| CN115370311B (en) | 2023-06-13 |
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