CN114658397B - Oil gas well casing slotting mesh-making perforator - Google Patents
Oil gas well casing slotting mesh-making perforator Download PDFInfo
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- CN114658397B CN114658397B CN202210396993.3A CN202210396993A CN114658397B CN 114658397 B CN114658397 B CN 114658397B CN 202210396993 A CN202210396993 A CN 202210396993A CN 114658397 B CN114658397 B CN 114658397B
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- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000003032 molecular docking Methods 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000005422 blasting Methods 0.000 abstract description 9
- 230000006978 adaptation Effects 0.000 abstract description 8
- 239000011435 rock Substances 0.000 abstract description 6
- 210000001503 joint Anatomy 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
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- 239000006185 dispersion Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
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- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
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- 230000004888 barrier function Effects 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/119—Details, e.g. for locating perforating place or direction
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Abstract
The invention discloses an oil-gas well casing slotting mesh-making perforator which comprises a directional protection pipe, a perforation butt joint mechanism, a hole site protection mechanism and a traction mechanism, wherein the perforation butt joint mechanism comprises a fan-shaped pressurizing cushion piece, a guide arc rail movably arranged in the pressurizing cushion piece, and a first arc rod and a second arc rod movably connected to the inner cavity of the guide arc rail. Through the impact of the ability that produces in the twinkling of an eye of warhead blasting in the perforator to gathering the inboard spout of ability crown plate, at this moment, gather the ability crown plate and can outwards impel the stalk along the inboard of drainage tube, promote ring pad and core pad effect at the stalk after that, receive the spacing of leading to guide arm and montant and pull, a plurality of bafflers that are the annular distribution can carry out vertical distribution towards the inner chamber of drainage tube, thereby can make the device can the hole on the adaptation oil gas wall of a well effectively dock, and then avoid making the outside gravel of belt layer or the garrulous rock to block up the flow of normal oil gas against the current.
Description
Technical Field
The invention relates to the technical field of oil and gas well perforators, in particular to an oil and gas well casing slotting and net-making perforator.
Background
A perforator is an operation that a special energy-gathering device enters a preset position of an oil-gas well hole to perform explosion and hole opening to enable fluid in underground formations to enter the hole, and is generally applied to oil-gas fields and coal fields and sometimes applied to exploitation of water sources.
The perforator extends to a designated position and detonates, the produced blasting force can produce outward impact force on the belt making layer, the density of rock or soil outside the belt making layer is different due to different regions and environments, gravel or broken rock can easily flow backwards when the soil conveyed outside the belt making layer is impacted by the blasting force, and the direct blasting force produced by blasting once cracks are caused near a borehole wall hole and is washed away by liquid for a long time, so that irregular collapse can occur on the borehole.
According to the above, after perforation is carried out on a preset position in an oil and gas well, how to improve perforation protection on holes of the oil and gas well wall is the technical difficulty to be solved by the invention.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art or the related art.
Therefore, the technical scheme adopted by the invention is as follows:
the utility model provides an oil gas well casing cracks net making perforator, includes directional protecting tube, perforation docking mechanism, hole site protection machanism and drive mechanism, perforation docking mechanism is including the pressure boost pad spare that is fan-shaped state, mobile installation at the inside guide arc rail of pressure boost pad spare, mobile connection at the first arc pole and the second arc pole of guide arc rail inner chamber, run through to the inside haulage rope of first arc pole or second arc pole and mobile connection at the propulsion end of haulage rope outer end, hole site protection machanism is including installing the drainage tube in the pressure boost pad spare outside, seting up the inside deflection groove of drainage tube, mobile connection at the core pad of deflection inslot inboard, be located the sand control assembly of drainage tube, sand control assembly is including installing the inside inner tube of drainage tube, mobile connection at the inside elastic rod of inner tube, install at the ring pad of elastic rod outer end, connect at the inboard dog-leg of ring, install at the montant outside the dog-leg, mobile connection on the montant guide to the guide arm, install at the energy-gathering ring plate in montant outer end outside the dog-leg, drive mechanism is including connecting at the end of the top of pressure boost pad spare top and installing the end bottom of pressure boost pad spare.
The present invention in a preferred example may be further configured to: the inboard middle part of pressure boost pad has seted up horizontal hole, the top surface and the bottom of pressure boost pad have seted up symmetric distribution's perpendicular hole respectively, and the inside both ends of pressure boost pad have seted up curved slide.
Through adopting above-mentioned technical scheme, utilize to set up the arc slide at the inside both ends of pressure boost bedding piece, combine the adaptation between arc slide and two guide arc rails, can realize guiding the arc rail to two adjacent outside extensions of pressure boost bedding pieces in the twinkling of an eye when the outside extension spring of first arc pole and second arc pole releases.
The present invention in a preferred example may be further configured to: arc-shaped annular holes are formed in two ends of an inner cavity of the guide arc rail, and the outer end of the guide arc rail is matched and penetrates into an arc-shaped slide way inside the pressurizing cushion piece.
Through adopting above-mentioned technical scheme, when first arc pole and the outside extension spring of second arc pole were in the state of tightening up, two adjacent pressure boost pad pieces can contract to minimum state, and the outside elasticity potential energy that produces in the twinkling of an eye of when the outside extension spring release of first arc pole and second arc pole can make the outer end of first arc pole and second arc pole carry out outwards extension along guiding the arc rail inner chamber to can make two adjacent guiding arc rails expand outside the well wall perforation.
The present invention in a preferred example may be further configured to: inwards sunken annular groove has all been seted up to the outside of first arc pole and second arc pole, and is connected with the extension spring in the outside annular groove of first arc pole and second arc pole respectively, two through-holes have been seted up respectively to the inside of first arc pole and second arc pole outermost end.
Through adopting above-mentioned technical scheme, utilize and set up two through-holes in the inside of first arc pole and second arc pole outer end to utilize the through-hole of first arc pole and second arc pole inside to the spacing of haulage rope and pull, thereby can make things convenient for the device to receive the bullet blasting can carry out synchronous drive in the twinkling of an eye.
The present invention in a preferred example may be further configured to: an oval concave hole is formed in the propelling end, and the oval concave hole in the propelling end is matched with a vertical shaft at the top end of the propelling end.
Through adopting above-mentioned technical scheme, utilize and offer the oval shrinkage pool in the inside of propelling the end to utilize the guide of oval shrinkage pool to the vertical axle in haulage rope top, can realize the haulage rope in the twinkling of an eye that the inside outwards lifts up of propelling the end and to the release of the outside extension spring of first arc pole or second arc pole.
The present invention in a preferred example may be further configured to: the inner side of the drainage tube is provided with rectangular slotted holes which are uniformly distributed, the rectangular slotted holes on the inner side of the drainage tube are matched with the bottom end of the guide rod, and in addition, the outer end of the core pad is provided with an elliptical annular rubber gasket.
Through adopting above-mentioned technical scheme, utilize and set up inside sunken recess in the inside of drainage tube to combine the inside recess of drainage tube to the inner adaptation restraint of core pad, the notch of seting up simultaneously in the core pad outside is fixed a position the inner adaptation of propulsion end, thereby can make the device expand to carry out effective laminating to the wall of a well after the maximum state.
The invention in a preferred example may be further configured to: the externally connected of elasticity pole has the spring, and the bottom of spring is connected on the inner tube, in addition, the cross bore has been seted up to the bottom of montant, and the cross bore adaptation of montant bottom in the cross axle that leads to the guide arm top.
By adopting the technical scheme, the outward pressurization of the ring pad and the core pad is realized by utilizing the outward pushing force generated by the plurality of annularly distributed inner cylinders and the elastic rods, so that the mechanism can effectively compress and position the periphery of the well wall perforation.
By adopting the technical scheme, the invention has the beneficial effects that:
1. according to the invention, as the impact force generated after the bullet head in the perforator explodes can impact the well wall of the oil-gas well in different degrees, and the hole on the well wall can generate cracks in different degrees under the influence of the direct blasting force, the impact of energy accumulation generated at one moment in the bullet head explosion in the perforator on the chute on the inner side of the energy accumulation annular plate can be realized, at the moment, the energy accumulation annular plate can push the folding rod outwards along the inner side of the drainage tube, and then under the action of the folding rod pushing the annular pad and the core pad, the baffle plates in annular distribution can be vertically distributed towards the inner cavity of the drainage tube under the limiting traction of the guide rod and the vertical rod, so that the device can be adapted to the hole on the well wall of the oil-gas well for effective butt joint, and further, the situation that the gravel or crushed rocks outside the belt layer are blocked from flowing of normal oil gas in a reverse flow manner is avoided.
2. According to the invention, in the process that the folding rod extends outwards, along with the core pad which extends synchronously and the notch formed in the outer side of the core pad pushing the inner end of the propelling end outwards, the traction rope movably connected in the elliptical notch in the propelling end can release the spring outside the first arc rod at the moment, and the potential energy of the spring on the first arc rod and the second arc rod is reduced, the guide arc rail positioned outside the first arc rod and the second arc rod can pressurize and attach two adjacent pressurizing cushion pieces along the inner side of the well wall, and the plurality of pressurizing cushion pieces which are distributed annularly can be matched and attached to the well wall perforation by combining the drainage tube and the core pad, so that the safety protection of the well wall perforation by the device can be ensured, and the impact of gravel or crushed rocks outside a belt layer on the well wall on the perforation cracks can be avoided.
3. In the invention, according to the above description, in order to facilitate the continuous lateral movement of the perforator beyond the perforated part, the top surface and the bottom surface of the pressurizing pad are provided with the vertical holes which are symmetrically distributed, the top end and the bottom end which are provided with the inclined slopes are connected in the vertical holes, and the lateral movement of the perforator is guided by the slopes on the inner sides of the top end and the bottom end, so that the stable transportation of the perforator along the inner cavity of the oil and gas well can be facilitated.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic perspective view of FIG. 1;
FIG. 3 is a partial assembly schematic of FIG. 2;
FIG. 4 is a schematic diagram of the mechanism of FIG. 3 in a decentralized configuration;
FIG. 5 is a schematic view of the internal dispersion of FIG. 4;
FIG. 6 is a schematic diagram of the dispersion of FIG. 5 and a partial cross-section thereof;
FIG. 7 is a schematic view of the partial dispersion of FIG. 6 and a cross-section thereof;
fig. 8 is a schematic view of the dispersion of fig. 7.
Reference numerals:
100. a directional protection tube;
200. a perforation docking mechanism; 210. a booster pad; 220. guiding the arc rail; 230. a first arc bar; 240. a second arc bar; 250. a hauling rope; 260. a propelling tip;
300. a hole site protection mechanism; 310. a drainage tube; 320. a deflection slot; 330. a core pad; 340. a sand control assembly; 341. an inner barrel; 342. an elastic rod; 343. a ring pad; 344. folding the rod; 345. leading to a guide rod; 346. an energy gathering ring plate; 347. a vertical rod; 348. a barrier plate;
400. a traction mechanism; 410. placing a top end; 420. and a bottom end is arranged.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the accompanying drawings in combination with the embodiments. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
It is to be understood that this description is made only by way of example and not as a limitation on the scope of the invention.
The invention provides an oil and gas well casing slotting mesh-making perforator in combination with the following description and the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1 to 8, the oil and gas well casing slotting mesh-making perforator provided by the present invention includes a directional protection pipe 100, a perforation docking mechanism 200, a hole site protection mechanism 300 and a pulling mechanism 400, wherein the perforation docking mechanism 200 is installed outside the directional protection pipe 100, the hole site protection mechanism 300 is connected inside the perforation docking mechanism 200, and the pulling mechanism 400 is installed on the perforation docking mechanism 200.
The perforation docking mechanism 200 comprises a pressurizing pad element 210, a guide arc rail 220, a first arc rod 230, a second arc rod 240, a traction rope 250 and a propelling end head 260, the hole site protection mechanism 300 comprises a drainage tube 310, a deflection groove 320, a core pad 330 and a sand control assembly 340, the sand control assembly 340 further comprises an inner cylinder 341, an elastic rod 342, a ring pad 343, a folding rod 344, a guide rod 345, a shaped ring plate 346, a vertical rod 347 and a blocking plate 348, and the traction mechanism 400 comprises a top end head 410 and a bottom end head 420.
Specifically, the guide arc rail 220 is movably installed inside the pressurization pad 210, the first arc rod 230 and the second arc rod 240 are movably connected to an inner cavity of the guide arc rail 220, the traction rope 250 penetrates into the first arc rod 230 or the second arc rod 240, the propelling end 260 is movably connected to an outer end of the traction rope 250, the drainage tube 310 is installed outside the pressurization pad 210, the deflection groove 320 is opened inside the drainage tube 310, the core pad 330 is movably connected to an inner side of the deflection groove 320, the sand control assembly 340 is located inside the drainage tube 310, the inner tube 341 is installed inside the drainage tube 310, the elastic rod 342 is movably connected to an inner side of the inner tube 341, the ring pad 343 is installed at an outer end of the elastic rod 342, the folding rod 344 is connected to an inner side of the ring pad 343, the vertical rod 347 is installed at an outer side of the folding rod 344, the guiding guide rod 345 is movably connected to the vertical rod 347, the blocking plate 348 is installed at an outer end of the vertical rod 347, the energy-gathering ring plate 346 is connected to a bottom outside the folding rod 344, the top end 410 is connected to a top of the pressurization pad 210, and the bottom end 420 is installed at a bottom of the pressurization pad 210.
Example two:
as shown in fig. 5-7, on the basis of the first embodiment, a transverse hole is formed in the middle of the inner side of the pressurizing pad 210, the top surface and the bottom of the pressurizing pad 210 are respectively provided with symmetrically distributed vertical holes, and the two ends of the inner side of the pressurizing pad 210 are provided with arc-shaped slideways, and the two ends of the inner cavity of the guide arc rail 220 are provided with arc-shaped annular holes, and the outer end of the guide arc rail 220 is adapted to penetrate through the arc-shaped slideways of the inner side of the pressurizing pad 210, in addition, the outer portions of the first arc rod 230 and the second arc rod 240 are both provided with inward recessed annular grooves, and the annular grooves of the outer portions of the first arc rod 230 and the second arc rod 240 are respectively connected with a tension spring, and the inner portions of the outer ends of the first arc rod 230 and the second arc rod 240 are respectively provided with two through holes.
By arranging arc-shaped slide ways at two ends inside the pressurizing pad 210 and combining the adaptation between the arc-shaped slide ways and the two guiding arc tracks 220, when the external tension springs of the first arc rod 230 and the second arc rod 240 are released at a moment, the two adjacent pressurizing pad 210 can be extended outwards by the guiding arc tracks 220, and when the external tension springs of the first arc rod 230 and the second arc rod 240 are in a tightened state, the two adjacent pressurizing pad 210 can be contracted to a minimum state, and the outer ends of the first arc rod 230 and the second arc rod 240 can be caused to extend outwards along the inner cavity of the guiding arc track 220 by combining the elastic potential energy generated at a moment when the external tension springs of the first arc rod 230 and the second arc rod 240 are released, in addition, two through holes are arranged inside the outer ends of the first arc rod 230 and the second arc rod 240, and the through holes inside the first arc rod 230 and the second arc rod 240 are used for limiting and pulling the pulling of the pulling rope 250, so that the device can be conveniently subjected to an instant of bullet blasting, and the synchronous transmission can be realized, and the two adjacent guiding arc tracks 220 can be extended outwards extended to the outer holes.
Example three:
in the above embodiment, as shown in fig. 6 and 7, the pushing tip 260 has an oval concave hole formed therein, and the oval concave hole formed in the pushing tip 260 is adapted to the vertical axis of the top end of the pushing tip 260.
Through the guiding of the oval concave hole to the vertical shaft at the top end of the pulling rope 250, the pulling rope 250 can release the tension spring outside the first arc rod 230 or the second arc rod 240 at the moment when the inner end of the propelling end 260 is lifted outwards.
Example four:
referring to fig. 7 and 8, in the above embodiment, the inner side of the drainage tube 310 is provided with rectangular slots which are uniformly distributed, the rectangular slots of the inner side of the drainage tube 310 are adapted to the bottom ends of the guide rods 345, in addition, the outer end of the core pad 330 is provided with an elliptical ring-shaped rubber gasket, the outside of the elastic rod 342 is connected with a spring, the bottom end of the spring is connected to the inner cylinder 341, in addition, the bottom of the vertical rod 347 is provided with a transverse hole, and the transverse hole of the bottom of the vertical rod 347 is adapted to the transverse shaft of the top end of the guide rod 345.
Through combining the inner recess of drainage tube 310 to the inner adaptation restraint of core pad 330, the notch of seting up simultaneously in the core pad 330 outside is to the inner adaptation location of propulsion end 260, combines a plurality of inner tube 341 and the elastic rod 342 that the annular distributes to produce outside driving force simultaneously and to ring pad 343 and the outside pressure boost of core pad 330 to can make this mechanism to well wall perforation outlying effectively compress tightly the location, and carry out effective laminating to the well wall after the device expands to maximum state.
The working principle and the using process of the invention are as follows:
before use: because a casing pipe is needed to be used in an oil and gas well, and a belt building layer is arranged in the oil and gas well, before the perforator moves along the well cavity, an operator needs to install a plurality of groups of top end heads 410 and bottom end heads 420 on the top surface and the bottom surface of the pressurizing pad piece 210 which are distributed annularly, and then push the perforator along the well cavity;
when in use: after the perforator is conveyed to a designated position in an inner cavity of an oil and gas well, at a moment of detonating a warhead in the inner cavity of the directional protection tube 100, blasting impact force generated by the warhead can apply outward pushing force to an inner side annular groove of the energy-gathering annular plate 346, at the moment, the energy-gathering annular plate 346 can drive the folding rod 344, the annular pad 343 and the core pad 330 to push outwards along the drainage tube 310, meanwhile, the folding rod 344 can drive the blocking plate 348 to be in annular butt joint along the middle of the inner side of the drainage tube 310 in combination with movable traction and limiting of the bottom of the vertical rod 347 by the guide rod 345, and the outward pushing force of the folding rod 344 is received, at the moment, slits can be generated among a plurality of blocking plates 348 in annular butt joint for releasing fluid and primarily blocking gravel or broken rocks;
the same time of use: under the effect of the outward pushing force of the core pad 330, the slotted hole on the outer side of the core pad 330 pushes the inner end of the pushing end 260 outwards, at the moment, the traction rope 250 movably connected in the oval concave hole in the pushing end 260 releases the spring outside the first arc rod 230, at the moment, the spring released outside the first arc rod 230 and the second arc rod 240 pushes the guide arc track 220 outwards, then the two ends of the guide arc track 220 can quickly attach and assemble two adjacent pressurizing pad pieces 210 towards the inner wall of an oil and gas well, at the moment, the annular concave hole in the drainage tube 310 can conduct limiting guide on the core pad 330, and under the effect of the outward pushing force applied to the annular pad 343 by the inner cylinders 341 and the elastic rods 342 which are distributed in a plurality of annular shapes, the port on the outer end of the core pad 330 can conduct safe pressurizing protection on the part outside the perforation of the well wall.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It will be understood that when an element is referred to as being "mounted to," "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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 do not necessarily 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.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (9)
1. The utility model provides an oil gas well casing cracks and makes net perforator, includes directional protective tube (100), its characterized in that:
the perforation docking mechanism (200) movably arranged outside the directional protective pipe (100) comprises a fan-shaped pressurizing pad piece (210), a guide arc rail (220) movably arranged inside the pressurizing pad piece (210), a first arc rod (230) and a second arc rod (240) movably connected to the inner cavity of the guide arc rail (220), a pulling rope (250) penetrating into the first arc rod (230) or the second arc rod (240) and a propelling end (260) movably connected to the outer end of the pulling rope (250);
the hole site protection mechanism (300) movably arranged in the perforation docking mechanism (200) comprises a drainage tube (310) arranged at the outer side of the pressurizing pad piece (210), a deflection groove (320) arranged in the drainage tube (310), a core pad (330) movably connected to the inner side of the deflection groove (320), and a sand control assembly (340) positioned in the drainage tube (310);
the sand control assembly (340) comprises an inner barrel (341) arranged in the drainage tube (310), an elastic rod (342) movably connected in the inner barrel (341), a ring pad (343) arranged at the outer end of the elastic rod (342), a folding rod (344) connected to the inner side of the ring pad (343), a vertical rod (347) arranged on the outer side of the folding rod (344), a guide rod (345) movably connected to the vertical rod (347), a blocking plate (348) arranged at the outer end of the vertical rod (347) and a energy-gathering ring plate (346) connected to the bottom of the outer side of the folding rod (344);
the traction mechanism (400) arranged on the perforation docking mechanism (200) comprises a top end head (410) connected to the top of the pressurizing pad element (210) and a bottom end head (420) arranged at the bottom of the pressurizing pad element (210).
2. The oil and gas well casing slotting mesh-making perforator according to claim 1, wherein a transverse hole is formed in the middle of the inner side of the pressurizing pad (210), the top surface and the bottom of the pressurizing pad (210) are respectively provided with vertical holes which are symmetrically distributed, and two ends of the inside of the pressurizing pad (210) are provided with arc-shaped slideways.
3. The oil and gas well casing slotting mesh-making perforator of claim 2, wherein two ends of the inner cavity of the guiding arc rail (220) are provided with arc-shaped annular holes, and the outer end of the guiding arc rail (220) is adapted to penetrate into an arc-shaped slideway inside the pressurizing pad (210).
4. The oil and gas well casing slotting mesh-making perforator according to claim 1, wherein the first arc rod (230) and the second arc rod (240) are both provided with an inwardly recessed annular groove at the outer portion, the annular grooves at the outer portions of the first arc rod (230) and the second arc rod (240) are respectively connected with a tension spring therein, and two through holes are respectively formed in the outermost ends of the first arc rod (230) and the second arc rod (240).
5. The oil and gas well casing slotting mesh-making perforator of claim 1, wherein an elliptical concave hole is formed inside the propelling tip (260), and the elliptical concave hole inside the propelling tip (260) is adapted to a vertical shaft at the top end of the propelling tip (260).
6. The oil and gas well casing slotting and net-making perforator as claimed in claim 1, wherein the inner side of the drainage tube (310) is provided with rectangular slots distributed uniformly, and the rectangular slots on the inner side of the drainage tube (310) are adapted to the bottom end of the guide rod (345).
7. The oil and gas well casing slotting mesh-making perforator of claim 1, wherein the outer end of the core pad (330) is provided with an oval ring-shaped rubber gasket.
8. The oil and gas well casing slotting mesh-making perforator as claimed in claim 1, wherein a spring is connected to the outside of the elastic rod (342), and the bottom end of the spring is connected to the inner cylinder (341).
9. The oil and gas well casing slotting mesh-making perforator of claim 1, wherein the bottom of the vertical rod (347) is provided with a transverse hole, and the transverse hole at the bottom of the vertical rod (347) is adapted to a transverse shaft leading to the top end of the guide rod (345).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210396993.3A CN114658397B (en) | 2022-04-15 | 2022-04-15 | Oil gas well casing slotting mesh-making perforator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210396993.3A CN114658397B (en) | 2022-04-15 | 2022-04-15 | Oil gas well casing slotting mesh-making perforator |
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| CN114658397A CN114658397A (en) | 2022-06-24 |
| CN114658397B true CN114658397B (en) | 2022-10-21 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2724333A (en) * | 1950-11-06 | 1955-11-22 | Olin Mathieson | Protective apparatus for perforating well casings and the like |
| CN104533355B (en) * | 2014-12-25 | 2017-06-13 | 中国石油天然气股份有限公司 | Horizontal well pumping can publish oriented perforating attachment means |
| CN204827399U (en) * | 2015-08-26 | 2015-12-02 | 重庆大学 | A energy release device for cable perforation ware |
| CN105888625A (en) * | 2016-06-22 | 2016-08-24 | 西安石油大学 | Piston-spring type perforating gun expansion prevention and protection device |
| CN106089173B (en) * | 2016-06-22 | 2018-08-07 | 陕西城鸿实业有限公司 | A kind of completion mode with protection reservoir packing function |
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| US11098562B2 (en) * | 2017-12-12 | 2021-08-24 | Halliburton Energy Services, Inc. | End protectors for jet perforating guns |
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2022
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