CN220059496U

CN220059496U - Hydraulic pressure magnetic ball fishing device

Info

Publication number: CN220059496U
Application number: CN202321609114.7U
Authority: CN
Inventors: 郭朝阳; 王寅
Original assignee: Baoji Juneng Petroleum Machinery Co ltd
Current assignee: Baoji Juneng Petroleum Machinery Co ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-11-21
Anticipated expiration: 2033-06-25

Abstract

The utility model provides a ball ware device is dragged for to strong magnetism of hydraulic pressure, drag for with being used for salvaging the upper end fixed connection of grabbing of spacing steel ball at the connection nipple joint lower extreme, the epaxial suit of dabber is gone up and is fixed a position with the spring, the step anchor ring on the spring lower extreme through connecting the nipple joint inner wall is gone up down and is fixed a position, the dabber supports on the location mesa on the upper joint inner wall under the initial thrust effect of spring, a jet passage for washing salvaging the district locates dabber and connects the nipple joint lower extreme and with dabber and drag for grab the intercommunication, and salvage to drag for steel ball in grabbing through locating the magnetism of dabber lower extreme and inhale the steel ball and link firmly the device detachably and fix. The jet flow channel is arranged, so that the high-pressure water can smoothly descend a fishing tool in the flushing process of a fishing zone, the fishing grab is arranged, the steel balls can be prevented from touching the well wall to fall when the fishing is completed, the fishing in a narrow space and the accurate application of the drilling pressure in a horizontal well are realized, and the device is stable and reliable in use, simple in structure, low in cost, wide in application range and high and simple in operation precision.

Description

Hydraulic pressure magnetic ball fishing device

Technical Field

The utility model belongs to the technical field of underground salvage, and particularly relates to a hydraulic strong magnetic ball salvage device.

Background

In the production process of an oil-water well, various operations such as testing, fracturing, flushing and the like are carried out on various tools, and particularly in some horizontal wells, steel balls can be blocked and cannot circulate to a wellhead along with drilling fluid, so that special tools are needed for treatment; at present, the mill shoes are used for milling steel balls, and the steel balls cannot be effectively treated due to the fact that the steel balls are not fixed and the contact surface is small, the hardness is high or the mill shoes cannot be directly contacted with the steel balls, so that subsequent operation is affected.

Disclosure of Invention

The utility model solves the technical problems that: the utility model provides a ball ware device is dragged for to strong magnetism of hydraulic pressure, through set up with dabber and the connection nipple joint lower extreme with drag for the efflux passageway that grabs the intercommunication, wash the area of dragging for to the fishing through the efflux passageway by the inside high-pressure water of letting in dabber, be favorable to the fishing tool to descend smoothly, and rely on throttle pressure differential to produce thrust and stretch out the dabber, realize that the magnetism of dabber lower extreme is inhaled the steel ball and is linked firmly the device and fix the steel ball in the narrow and small area, the back relies on spring resilience to draw back dabber and magnetism to inhale the steel ball and link firmly the device and bring the steel ball back to drag for grab, accomplish the smooth fishing of steel ball, drag for and be favorable to salvage and accomplish the ascending time prevent that the steel ball from touching the wall of a well and drop, realize that the accurate weight of applying in narrow and small space is salvaged and the horizontal well, the problem that traditional fishing tool is low to the steel ball salvage success rate and salvage is low is used reliably, low structure is simplified, low cost, wide application scope is wide, high and simple operation precision and simple.

The utility model adopts the technical scheme that: the utility model provides a hydraulic pressure magnetism drags for ball ware device, includes the upper joint that upper end and drilling rod screw thread link firmly, upper joint lower extreme and connection nipple upper end fixed connection, and the upper end opening and the lower extreme seal hollow structure's dabber halve seal suit in the upper joint and the lower halve seal suit in the connection nipple to can follow the axial of upper joint and connection nipple and reciprocate, the connection nipple lower extreme is with the fishing upper end fixed connection who is used for salvaging spacing steel ball, the dabber suit has the spring with last location, the spring lower extreme is fixed a position down through the step anchor ring on the connection nipple inner wall, the dabber supports under the initial thrust effect of spring on the location mesa on the upper joint inner wall for the fluidic channel that washes to salvage the district locates dabber and connection nipple lower extreme and with the dabber and drags to grab the intercommunication, and salvage the steel ball in the fishing grab through locating the magnetic steel ball fixed connection device of dabber lower tip.

The magnetic steel ball fixing device comprises a magnet for magnetically fixing the steel ball, an installation groove is formed in the lower end of the mandrel, the magnet is arranged in the installation groove, a positioning ring which is adapted to the notch position of the installation groove is detachably fixed at the lower end of the mandrel, and the magnet is fixed in the installation groove through the positioning ring.

Further, the positioning ring is fixed on the mandrel through a plurality of connecting screw plugs on the outer circumferential wall of the lower end of the mandrel.

Further, the jet flow channel comprises jet flow holes, a jet flow ring groove communicated with the fishing grip is formed in the inner circumferential wall of the lower end of the connecting nipple, a plurality of jet flow holes are formed in the outer circumferential wall of the lower end of the mandrel, the jet flow holes are communicated with the jet flow ring groove when the mandrel is located at the initial position, and high-pressure water in the mandrel is sprayed out of the jet flow ring groove through the jet flow holes to flush a fishing area, and meanwhile the mandrel is pushed to move downwards under the thrust action generated by the throttling pressure difference between the upper port and the lower port of the jet flow holes.

Further, the jet hole is an inclined hole which is obliquely arranged downwards.

Further, the upper half part of the fishing grab is of a cylindrical structure, a plurality of long grooves are uniformly distributed on the outer circumferential wall of the lower half part of the fishing grab, a fishing claw is formed between two adjacent long grooves, and an elastic sheet protruding towards the axis direction is fixed on the inner claw wall at the lower end of the fishing claw.

Further, the vertical distance between the protruding parts of the elastic pieces and the fishing and grabbing central axis is smaller than the diameter of the steel ball to be fished.

Further, the cross section of the outer contour of the mandrel is of a T-shaped structure with the upper end diameter larger than the lower end diameter, the mandrel is sealed in the upper joint in an adaptive manner through a sealing ring arranged on the outer circumferential wall of the large-diameter section, the spring is sleeved on the small-diameter section of the mandrel, and the upper end of the spring is positioned on the step surface formed by the transition position of the large-diameter section and the small-diameter section of the mandrel.

Further, a convex ring is arranged on the inner wall of the middle lower section of the connecting nipple, a sealing ring used for sealing with the lower end of the mandrel is arranged on the annular wall of the convex ring, and the lower end of the spring is positioned downwards through the upper step surface of the convex ring.

Further, the upper end of the connecting nipple is fixedly connected with the lower end of the upper joint through threads, and a locking screw plug which is in threaded connection with the upper end of the connecting nipple is propped against a guide ring on the upper joint; the lower end of the connecting nipple is fixedly connected with the screw thread at the upper end of the fishing grab.

Compared with the prior art, the utility model has the advantages that:

1. according to the technical scheme, the jet flow channels communicated with the mandrel and the fishing grab are arranged at the lower ends of the mandrel and the connecting nipple, high-pressure water introduced into the mandrel washes the fishing area through the jet flow channels, so that a fishing tool can smoothly descend, the mandrel can be stretched out by means of thrust generated by throttling pressure difference, the steel ball is fixed by the magnetic steel ball fixing device at the lower end of the mandrel in a narrow area, the mandrel and the magnetic steel ball fixing device are retracted by means of resilience force of a spring after the high-pressure water in the mandrel is decompressed, and the steel ball is returned into the fishing grab by means of the steel ball, so that smooth fishing of the steel ball is completed;

2. according to the technical scheme, the elastic piece protruding towards the axial direction is fixed on the inner claw wall at the lower end of the salvaging claw, so that the steel ball is limited in the process of moving upwards after being attracted and fixed with the magnet, the steel ball cannot fall off in the process of salvaging, grabbing and moving upwards, and the probability of successful salvaging of the steel ball is improved;

3. the technical scheme is beneficial to preventing the steel ball from touching the well wall and falling when the salvaging is completed and realizing the salvaging in a narrow space and the accurate application of the drilling pressure in the horizontal well;

4. the technical scheme has the advantages of stable and reliable use, simplified structure, low cost, wide application range, high operation precision, simplicity and convenience and wide application prospect.

Drawings

FIG. 1 is a schematic view of the structure of the mandrel of the present utility model in an initial position;

FIG. 2 is a schematic diagram of the structure of the utility model when the mandrel moves down to salvage the steel ball;

fig. 3 is a partially enlarged schematic view of fig. 1 at a.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described in the following with reference to fig. 1 to 3 in the embodiments of the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The inclusion of an element as defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The hydraulic magnetic bailing device is shown in fig. 1-2, and comprises an upper joint 1, the upper end of which is fixedly connected with a drill rod through threads, the lower end of the upper joint 1 is fixedly connected with the upper end of a connecting nipple 3, the upper half part of a mandrel 2 with a hollow structure, the upper end of which is open and the lower end of which is sealed, is hermetically sleeved in the upper joint 1, the lower half part of the mandrel 2 is hermetically sleeved in the connecting nipple 3 and can move up and down along the axial directions of the upper joint 1 and the connecting nipple 3, the lower end of the connecting nipple 3 is fixedly connected with the upper end of a bailing grip 4 for fishing a limiting steel ball 8, the mandrel 2 is sleeved and is provided with a spring 7 in an upper positioning way, the lower end of the spring 7 is fixedly positioned through a stepped annular surface on the inner wall of the connecting nipple 3, a jet channel for flushing a salvaging area is arranged on the mandrel 2 and the lower end of the connecting nipple 3 and is communicated with the mandrel 2 and the bailing grip 4, and the steel ball 8 fished into the bailing grip 4 is fixedly connected and detached through a magnetic steel ball sucking device arranged at the lower end of the mandrel 2; in the structure, the jet flow channels communicated with the mandrel 2 and the fishing and grabbing device 4 are arranged at the lower ends of the mandrel 2 and the connecting nipple 3, high-pressure water introduced into the mandrel 2 washes the fishing and grabbing area through the jet flow channels, so that a fishing tool can smoothly descend, the mandrel 2 can be stretched out by means of thrust generated by throttling pressure difference, the steel ball 8 can be fixed by the magnetic steel ball fixing device at the lower end of the mandrel 2 in a narrow area, the mandrel 2 and the magnetic steel ball fixing device can be retracted by means of resilience force of the spring 7 after the high-pressure water in the mandrel 2 is decompressed, and the steel ball 8 can be returned into the fishing and grabbing device, so that smooth fishing of the steel ball 8 can be completed;

the magnetic steel ball fixing device has the following specific structure: the magnetic steel ball fixing device comprises a magnet 5 for magnetically fixing a steel ball 8, an installation groove 9 is formed in the lower end of the mandrel 2, the magnet 5 is arranged in the installation groove 9, a positioning ring 10 which is adapted to the notch position of the installation groove 9 is detachably fixed at the lower end of the mandrel 2, and the magnet 5 is fixedly positioned in the installation groove 9 through the positioning ring 10; specifically, the positioning ring 10 is fixed on the mandrel 2 through a plurality of connecting screw plugs on the outer circumferential wall of the lower end of the mandrel 2; in the above structure, the positioning ring 10 is a detachable fixing structure on the mandrel 2, which is beneficial to changing different magnets 5 according to different operations, thereby enlarging the application range of the structure.

The fluidic channels were as follows: the jet flow channel comprises jet flow holes 6, a jet flow ring groove 11 communicated with the fishing grab 4 is formed in the inner circumferential wall of the lower end of the connecting nipple 3, a plurality of jet flow holes 6 are formed in the outer circumferential wall of the lower end of the mandrel 2, the jet flow holes 6 are communicated with the jet flow ring groove 11 when the mandrel 2 is positioned at an initial position, high-pressure water in the mandrel 2 is sprayed out of the jet flow ring groove 11 through the jet flow holes 6 to flush a fishing area, and meanwhile, the mandrel 2 is pushed to move downwards under the thrust action generated by the throttling pressure difference between the upper port and the lower port of the jet flow holes 6; specifically, the jet hole 6 is an inclined hole which is arranged obliquely downwards.

The specific structure of the fishing grab 4 is as follows: the upper half part of the fishing claw 4 is of a cylindrical structure, a plurality of long grooves are uniformly distributed on the outer circumferential wall of the lower half part of the fishing claw 4, a fishing claw is formed between two adjacent long grooves, and an elastic sheet 12 protruding towards the axial direction is fixed on the inner claw wall at the lower end of the fishing claw; specifically, the vertical distance from the protruding parts of the plurality of elastic pieces 12 to the central axis of the fishing grab 4 is smaller than the diameter of the steel ball 8 to be fished, so that the steel ball 8 is positioned downwards, the steel ball 8 is positioned through the plurality of elastic pieces 12 when the fishing grab 4 salvages and lifts the steel ball 8, the steel ball 8 does not fall after being fished into the fishing grab 4, the fishing grab 4 is favorable for preventing the steel ball 8 from touching the well wall to fall when the fishing is completed, and the fishing in a narrow space and the accurate application of drilling pressure in a horizontal well are realized; an elastic sheet 12 protruding towards the axial direction is fixed on the inner claw wall at the lower end of the salvaging claw, so that the steel ball 8 plays a limiting role in the process of upwards moving after the steel ball 8 is attracted and fixed with the magnet 5, the steel ball 8 cannot fall in the process of salvaging, grabbing and upwards moving, and the probability of successful salvaging of the steel ball 8 is improved;

the sealing structure of the mandrel 2 in the upper joint is specifically as follows: the cross-sectional shape of the outer outline of the mandrel 2 is of a T-shaped structure with the upper end diameter larger than the lower end diameter, the mandrel 2 is sealed in the upper joint 1 through a sealing ring arranged on the outer circumferential wall of the large-diameter section in an adaptive manner, the spring 7 is sleeved on the small-diameter section of the mandrel 2, and the upper end of the spring 7 is positioned on a step surface formed by the transition position of the large-diameter section and the small-diameter section of the mandrel 2.

The lower positioning structure of the connecting nipple 3 to the spring 7 is specifically as follows: the inner wall of the middle lower section of the connecting nipple 3 is provided with a convex ring 13, the annular wall of the convex ring 13 is provided with a sealing ring used for sealing with the lower end of the mandrel 2, and the lower end of the spring 7 is positioned downwards through the upper step surface of the convex ring 13.

The upper end of the connecting nipple 3 is fixedly connected with the lower end of the upper joint 1 through threads, and a locking screw plug 14 which is in threaded connection with the upper end of the connecting nipple 3 is propped against a guide ring on the upper joint 1; the lower end of the connecting nipple 3 is fixedly connected with the upper end of the fishing grab 4 through threads.

In the technical scheme, the connecting nipple 3 is used for limiting the stroke of the mandrel 2 and has a centralizing effect on the expansion and contraction of the mandrel 3. During operation, the wall scraping device is used for scraping the wall and circularly washing the well before the well is put down, the well is opened by the well opening gauge, the upper end of the well is connected with the centralizer, the well is put down to the fish position, the well is opened by the fluid circulation, the fish head is flushed by means of the impact force of the fluid, and at the moment, the mandrel 2 is pulled out by means of the thrust generated by the throttling pressure difference, and the pressure is released.

For example: the structure is tested in a horizontal oil well with an inner diameter of 124.3mm and a depth of about 4200m, the structure is adopted for operation, a high-pressure pump truck and a hydraulic truck are used for positioning and scraping a well wall, a pipe wall is pressed and cleaned, a phi 118mm multiplied by 1.0mm drift diameter gauge is used for checking the well diameter, then the well diameter is reduced to 3453.5m to meet resistance, circulating liquid is pumped into the drift diameter, the discharge capacity is 300L/min, a fish head is flushed for 5 minutes, the pressure is stabilized at 4MPa, the thrust of about 17KN is generated, the pressure is released, a steel ball with the phi 86mm is lifted out from a wellhead, and the design of the structure is proved to achieve the expected effect.

The technical scheme has the advantages of stable and reliable use, simplified structure, low cost, wide application range, high operation precision, simplicity and convenience and wide application prospect.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The hydraulic pressure magnetism drags for ball ware device, its characterized in that: including upper end and drilling rod screw thread fixed connection's top connection (1), top connection (1) lower extreme and connection nipple (3) upper end fixed connection, and the upper end opening and lower extreme seal hollow structure's dabber (2) first half sealed suit in top connection nipple (1) and second half sealed suit in connection nipple (3) to can follow top connection (1) and connect the axial of nipple (3) and reciprocate, connect nipple (3) lower extreme and be used for salvaging and grab (4) upper end fixed connection of spacing steel ball (8), the cover is gone up and is fixed with spring (7) on dabber (2), the location is gone down through the step anchor ring on connecting nipple (3) inner wall to spring (7) lower extreme, dabber (2) are supported on the location mesa on top connection nipple (1) inner wall under the initial thrust effect of spring (7) for the efflux passageway that washes is located dabber (2) and is connected nipple (3) lower extreme and is grabbed with salvaging and grab (4) and is grabbed and grab (4) and is connected to the fixed device of grabbing down steel ball (4) through the fixed connection of grabbing down steel ball (8).

2. The hydraulic magnetic bailer device of claim 1, wherein: the magnetic steel ball fixing device comprises a magnet (5) used for fixing a steel ball (8) in a magnetic manner, an installation groove (9) is formed in the lower end of a mandrel (2), the magnet (5) is arranged in the installation groove (9), a positioning ring (10) which is adapted to the notch position of the installation groove (9) is detachably arranged at the lower end of the mandrel (2), and the magnet (5) is fixedly arranged in the installation groove (9) through the positioning ring (10).

3. The hydraulic ferromagnetic bailer device of claim 2, wherein: the positioning ring (10) is fixed on the mandrel (2) through a plurality of connecting screw plugs on the outer circumferential wall of the lower end of the mandrel (2).

4. The hydraulic magnetic bailer device of claim 1, wherein: the jet channel comprises jet holes (6), jet ring grooves (11) communicated with the fishing grip (4) are formed in the inner circumferential wall of the lower end of the connecting nipple (3), a plurality of jet holes (6) are formed in the outer circumferential wall of the lower end of the mandrel (2), the jet holes (6) are communicated with the jet ring grooves (11) when the mandrel (2) is located at the initial position, and high-pressure water in the mandrel (2) is sprayed out of the jet ring grooves (11) through the jet holes (6) to flush a fishing area and pushes the mandrel (2) to move downwards under the thrust action generated by the throttling pressure difference of the upper port and the lower port of the jet holes (6).

5. The hydraulic ferromagnetic bailer device of claim 4, wherein: the jet hole (6) is an inclined hole which is obliquely arranged downwards.

6. The hydraulic magnetic bailer device of claim 1, wherein: the upper half part of the fishing claw (4) is of a cylindrical structure, a plurality of long grooves are uniformly distributed on the outer circumferential wall of the lower half part of the fishing claw (4), a fishing claw is formed between two adjacent long grooves, and an elastic sheet (12) protruding towards the axial direction is fixed on the inner claw wall of the lower end of the fishing claw.

7. The hydraulic magnetic bailer device of claim 6, wherein: the vertical distance between the convex parts of the elastic sheets (12) and the central axis of the fishing grab (4) is smaller than the diameter of the steel ball (8) to be fished.

8. The hydraulic ferromagnetic bailer device of any of claims 1-7, wherein: the cross-sectional shape of the outer outline of the mandrel (2) is of a T-shaped structure with the upper end diameter larger than the lower end diameter, the mandrel (2) is sealed in the upper joint (1) through a sealing ring arranged on the outer circumferential wall of the large-diameter section in an adapting mode, the spring (7) is sleeved on the small-diameter section of the mandrel (2), and the upper end of the spring (7) is located on a step surface formed by the transition position of the large-diameter section and the small-diameter section of the mandrel (2).

9. The hydraulic magnetic bailer device of claim 8, wherein: the inner wall of the middle lower section of the connecting nipple (3) is provided with a convex ring (13), the annular wall of the convex ring (13) is provided with a sealing ring used for sealing with the lower end of the mandrel (2), and the lower end of the spring (7) is positioned downwards through the upper step surface of the convex ring (13).

10. The hydraulic ferromagnetic bailer device of claim 9, wherein: the upper end of the connecting nipple (3) is fixedly connected with the lower end of the upper joint (1) through threads, and a locking screw plug (14) which is in threaded connection with the upper end of the connecting nipple (3) is propped against a guide ring on the upper joint (1); the lower end of the connecting nipple (3) is fixedly connected with the upper end of the fishing grab (4) through threads.