CN211342846U

CN211342846U - Underground applicator and underground tool assembly

Info

Publication number: CN211342846U
Application number: CN202020046593.6U
Authority: CN
Inventors: 刘书豪; 唐勇; 陈俊宏; 苏诗策; 刘树飞
Original assignee: Chengdu Bison Technology Co ltd
Current assignee: Chengdu Bison Technology Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-08-25
Anticipated expiration: 2030-01-10

Abstract

The application relates to the technical field of natural gas and oil exploitation, and discloses an underground applicator and an underground tool assembly. The downhole applicator includes a cylindrical base, at least two limiting members, an application member, an elastic member, and a connecting member. When the limiting component is positioned at the limiting position, the releasing component is maintained at the locking position; when the applying component is located at the locking position, the applying component presses the connecting component so that a part of the connecting component extends to the outside of the base body through the working hole; when the limiting parts are positioned at the expansion position, an accommodating space is formed between the limiting parts, and the applying part enters the accommodating space under the action of the elastic part and moves to the release position; when the application member is in the release position, the coupling member can be fully advanced into the substrate by an external force. The utility model provides a ware and downhole tool assembly are applyed in pit is applicable to the oil gas well of big well incline, and can apply the downhole tool to the great position of the interior inclination of oil gas well.

Description

Underground applicator and underground tool assembly

Technical Field

The present application relates to the field of natural gas and oil recovery technologies, and more particularly, to an underground applicator and an underground tool assembly.

Background

At present, when putting down downhole tool in to the oil gas well, will release the instrument and link together with downhole tool through the pin, then release the instrument and drive downhole tool and move the preset position in the oil gas well. After reaching the predetermined location, the pin is broken by jarring, leaving the downhole tool in the predetermined location in the well. However, the above application process is not applicable to oil and gas wells with large well deviations. After the releasing tool drives the downhole tool to move to the position with larger inclination in the oil gas well, the jarring force cannot be effectively transmitted to the connecting position of the releasing tool and the downhole tool, so that the pin for connecting the releasing tool and the downhole tool cannot be broken, and the downhole tool cannot be separated from the releasing tool.

SUMMERY OF THE UTILITY MODEL

Embodiments of the present application provide a downhole applicator that is suitable for use in oil and gas wells with large well inclinations, and that can also reliably release a downhole tool connected thereto at a location in the oil and gas well where the inclination is large.

Embodiments of the present application also provide a downhole tool assembly having the above-described downhole applicator.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

a downhole applicator comprising: the device comprises a columnar base body, a plurality of working cavities and a plurality of working holes, wherein the working cavities are formed in the base body; at least two stop members disposed within the working chamber, the stop members configured to reciprocate radially between a stop position adjacent one another and an expanded position away from one another; an application member disposed within the working chamber, the application member configured to reciprocate axially between a locked position and a released position; an elastic member configured to apply an elastic force to the application member such that the application member always has a tendency to move to the release position; and a connecting member disposed within the working chamber; when the limiting component is located at the limiting position, one end of the limiting component abuts against one end of the applying component so as to maintain the applying component at the locking position; when the applying component is located at the locking position, the applying component presses the connecting component so that a part of the connecting component extends to the outside of the base body through the working hole; when the limiting parts are positioned at the expansion position, an accommodating space is formed between the limiting parts, and the applying part enters the accommodating space under the action of the elastic part and moves to the release position; when the application member is in the release position, the coupling member can be fully advanced into the substrate by an external force.

Further, a locking mechanism is included, the locking mechanism being configured to be switched between a locked state and an unlocked state; when the locking mechanism is in a locking state, the limiting component is maintained at a limiting position; when the locking mechanism is in an unlocked state, the limiting component moves to an expansion position under the pushing of the applying component.

Further, one end of the stopper member is provided with a contact slope configured to abut against one end of the application member.

Further, the end of the application member against which the limit member abuts is tapered to fit the contact slope.

Furthermore, the underground applicator comprises two limiting parts and two locking mechanisms, wherein each limiting part is connected with one locking mechanism; the two locking mechanisms are configured to be capable of cooperating with each other when the spacing member is in the spacing position to maintain the spacing member in the spacing position; the two locking mechanisms are configured to be able to disengage from each other under external forces when mated to each other to enable the spacing member to move to the expanded position.

Furthermore, an operation port which is communicated with the working cavity and the outside along the radial direction is formed in the base body; the locking mechanism extends outside the base body through the operation opening.

Further, the locking mechanism comprises a fixed shaft and a locking body; the fixed shaft is fixedly connected with the limiting part, and the locking body is rotatably matched with the fixed shaft; the locking body is provided with a locking groove; the fixed shaft of one locking mechanism can be embedded into the locking groove on the locking body of the other locking mechanism so as to maintain the two limiting parts at the limiting positions close to each other; the locking body of one locking mechanism can be separated from the fixed shaft of the other locking mechanism under the action of external force, so that the limiting parts can be far away from each other; the locking body extends to the outside of the base body through the operation opening.

Further, the downhole applicator may further include a shaft coupled to the base, and the stop member may be rotatably coupled to the shaft for reciprocating movement between the stop position and the expanded position.

Further, the connecting part is spherical, and the diameter of the connecting part is larger than that of the working hole.

A downhole tool assembly comprising any of the downhole applicators and downhole tools described above; one end of the downhole tool is provided with an accommodating groove, and one end of the substrate is inserted into the accommodating groove; the inner wall of the accommodating groove is provided with a connecting hole corresponding to the working hole; when the limiting component is positioned at the limiting position, the connecting component is embedded into the connecting hole; when the limiting part is located at the expansion position, the downhole tool extrudes the connecting part to enable the connecting part to be separated from the connecting hole.

The technical scheme of the application has following advantage and beneficial effect at least:

according to the downhole applicator provided by the embodiment of the application, when the limiting component is located at the limiting position, one end of the limiting component abuts against one end of the applying component so as to maintain the applying component at the locking position; when the application member is in the locked position, the application member presses against the attachment member such that a portion of the attachment member extends outside the base body through the working hole. Through the connecting part that extends to the base member outside, downhole applicator can connect downhole tool to drive downhole tool and remove predetermined position in the oil gas well. When the limiting parts are positioned at the expansion position, an accommodating space is formed between the limiting parts, and the applying part enters the accommodating space under the action of the elastic part and moves to the release position; when the application member is in the release position, the coupling member can be fully advanced into the substrate by an external force. At this point, the coupling member can be fully advanced into the substrate under the squeeze of the downhole tool, thereby allowing the downhole tool to be disengaged from the downhole applicator. The underground tool releasing device provided by the embodiment of the application can release the underground tool only by moving the limiting part from the limiting position to the expansion position without vibrating. This makes the downhole applicator that this application embodiment provided be applicable to the oil and gas well of big well slope, and can release the downhole tool to the position that the interior slope degree is great in the oil and gas well.

The utility model provides a downhole tool assembly is applicable to the oil gas well of big well incline, and can release downhole tool to the great position of oil gas well inclination.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments are briefly described below. It is appreciated that the following drawings depict only certain embodiments of the application and are not to be considered limiting of its scope. From these figures, other figures can be derived by those skilled in the art without inventive effort.

FIG. 1 is a schematic cross-sectional view of a downhole applicator according to example 1 of the present application, in which a retainer is in a retaining position;

FIG. 2 is a schematic cross-sectional view of a downhole applicator according to example 1 of the present application, showing a stop member in an expanded position;

fig. 3 is a schematic cross-sectional view of a downhole tool assembly according to embodiment 2 of the present application.

In the figure: 010-downhole tool assembly; 100-a downhole applicator; 101-a rotating shaft; 110-a substrate; 111-a working chamber; 112-a working hole; 113-an operation port; 120-a stop member; 120 a-a receiving space; 121-contact bevel; 130-an application member; 140-an elastic member; 150-a connecting member; 160-a locking mechanism; 161-fixed shaft; 162-a locking body; 162 a-locking groove; 200-a downhole tool; 210-a receiving tank; 211-connecting hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described in detail and completely with reference to the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments.

Thus, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of some embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that, in the embodiments and the features and technical solutions in the embodiments of the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like refer to the orientation or positional relationship based on the drawings, or the orientation or positional relationship that the utility model is used to put, or the orientation or positional relationship that the skilled person usually understands, and such terms are only for convenience of describing and simplifying the description, but do not refer to or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In the description of the present application, "oil and gas well" may refer to both oil and gas wells. When the "oil and gas well" is a natural gas well, it may be a natural gas well for collecting conventional natural gas, or a natural gas well for collecting unconventional natural gas (shale gas, coal bed gas, etc.).

Example 1:

fig. 1 is a schematic cross-sectional view of a downhole applicator 100 according to an embodiment of the present invention, in which a stop member 120 is located at a stop position. FIG. 2 is a cross-sectional schematic view of the downhole applicator 100 of this embodiment, showing the stop member 120 in an expanded position.

Referring to fig. 1 and 2 in combination, a downhole applicator 100 provided by an embodiment of the present application includes a base 110, a stop member 120, an application member 130, an elastic member 140, and a coupling member 150.

The base 110 is cylindrical and the upper end of the base 110 is used to connect with a fishing device so that the downhole applicator 100 can move up and down in an oil or gas well. The base 110 is provided with a working chamber 111 extending along the axis thereof. The working chamber 111 extends upward from the lower end of the base 110. A radially extending working hole 112 is provided in the outer peripheral surface of the lower end of the base 110. The working hole 112 communicates the working chamber 111 with the outside.

Two stop elements 120 are movably disposed in the working chamber 111. The two stop members 120 are configured to reciprocate radially between a stop position (shown in figure 1) adjacent one another and an expanded position (shown in figure 2) away from one another. It should be noted that the number of the limiting members 120 is not limited to two, and in other embodiments, three or more limiting members 120 may be provided. It should also be noted that the stop 120 may be movably disposed within the working chamber 111 in a variety of ways. In this embodiment, the position limiting member 120 is rotatably disposed in the working chamber 111. In particular, the downhole applicator 100 further includes a shaft 101. The rotating shaft 101 is fixedly connected with the base body 110, and the rotating shaft 101 is arranged at the upper part of the working cavity 111. The upper part of the position limiting part 120 is rotatably connected with the rotating shaft 101. When the stop members 120 move from the expanded position to the stop position, the lower portions of the two stop members 120 move radially inward and toward each other. When the stop members 120 move from the stop position to the expanded position, the lower portions of the two stop members 120 move radially outward and away from each other.

Applicator member 130 is cylindrical in shape extending axially along base 110. An application member 130 is axially movably disposed within working chamber 111. The application member 130 is disposed below the limiting member 120. The application member 130 is reciprocally movable between a locked position (shown in FIG. 1) and a released position (shown in FIG. 2). The lock position is located below the release position.

The resilient member 140 applies a resilient force to the application member 130 such that the application member 130 always has a tendency to move to the release position. Specifically, in the present embodiment, the elastic member 140 is a spring, and the elastic member 140 is sleeved on the application member 130. The upper end of resilient member 140 acts on applicator member 130 and the lower end acts on base 110. The resilient member 140 is always in a compressed state, thereby applying a resilient force to the application member 130 such that the application member 130 always has a tendency to move toward the release position.

The connection part 150 is disposed in the working chamber 111 and corresponds to the working hole 112. When application member 130 is in the locked position, a portion of attachment member 150 extends from working aperture 112 out of base 110 under compression of application member 130. When the application member 130 is in the release position, the attachment member 150 is able to fully enter the base 110 under the influence of an external force. In this embodiment, the connection member 150 is a sphere, and the diameter of the connection member 150 is larger than that of the working hole 112, so that the connection member 150 is separated from the base 110. The spherical connecting member 150 can be more easily moved out of the base 110 by the pressing force of the application member 130, and can be more easily moved back into the base 110 by the external force.

With the stop member 120 in the stop position, the lower end of the stop member 120 abuts the upper end of the application member 130 to maintain the application member 130 in the locked position. With application member 130 in the locked position, application member 130 compresses coupling member 150 such that a portion of coupling member 150 extends outside of base 110 through working aperture 112. The downhole applicator 100 is capable of engaging a downhole tool over a coupling member 150 extending to the exterior of the base 110 to move the downhole tool to a predetermined location within a hydrocarbon well. When the position-limiting members 120 are located at the expanded position, the accommodating space 120a is formed between the position-limiting members 120, and the application member 130 enters the accommodating space 120a and moves to the release position under the action of the elastic member 140. With application member 130 in the release position, attachment member 150 can be fully advanced into base 110 under an external force. At this point, the coupling member 150 can be fully advanced into the base 110 under the squeeze of the downhole tool, thereby allowing the downhole tool to be disengaged from the downhole applicator 100. The present embodiment provides a downhole applicator 100 that can apply a downhole tool without jarring by merely moving the stop member 120 from the stop position to the expanded position. This allows the downhole applicator 100 provided by the present embodiment to be adapted for use in oil and gas wells with large well inclinations and enables the application of downhole tools to locations with large inclinations in the oil and gas well.

The movement of the stop member 120 between the stop position and the extended position may be controlled by a power device such as a motor. To simplify the structure, and also to improve reliability, in this embodiment the stop member 120 is urged from the stop position to the expanded position by the applier member 130. Specifically, the downhole applicator 100 further includes a locking mechanism 160, the locking mechanism 160 configured to transition between a locked state and an unlocked state. When the locking mechanism 160 is in the locked state, the stopper member 120 is maintained at the stopper position; with the locking mechanism 160 in the unlocked state, the stop member 120 is moved to the expanded position under the urging of the applier member 130.

In order to enable the application member 130 to more smoothly push the limiting member 120 to the expanded position, in the present embodiment, the lower end of the limiting member 120 is provided with a contact slope 121, and the contact slope 121 is configured to abut against the upper end of the application member 130. When the locking mechanism 160 is in the unlocked state, the limiting member 120 can smoothly push the limiting member 120 to move to the expanded position by contacting the inclined surface 121.

Further, in the present embodiment, the upper end of the application member 130 is tapered to fit the contact slope 121. The sensitivity of the stopper member 120 and the application member 130 at the time of movement can be further improved by the contact of the tapered upper end of the application member 130 with the contact slope 121, so that the stopper member 120 can be smoothly moved to the expanded position and the application member 130 can be smoothly moved to the release position.

Further, in this embodiment, the downhole applier 100 includes two locking mechanisms 160, one locking mechanism 160 attached to each stop member 120. The two locking mechanisms 160 are configured to cooperate with each other when the spacing member 120 is in the spacing position to maintain the spacing member 120 in the spacing position; the two locking mechanisms 160 are configured to be able to separate from each other by an external force when they are engaged with each other, so that the spacing member 120 can move to the expanded position.

Further, in the present embodiment, the base 110 is provided with an operation port 113 radially communicating the working chamber 111 with the outside. The locking mechanism 160 extends to the outside of the base 110 through the operation opening 113.

Further, in the present embodiment, the locking mechanism 160 includes a fixed shaft 161 and a locking body 162; the fixing shaft 161 is fixedly coupled to the position limiting member 120, and the locking body 162 is rotatably engaged with the fixing shaft 161. The locking body 162 is provided with a locking groove 162 a; the fixing shaft 161 of one locking mechanism 160 can be inserted into the locking groove 162a of the locking body 162 of the other locking mechanism 160 to maintain the two position restricting members 120 at the position restricting positions close to each other. The locking body 162 of one locking mechanism 160 can be disengaged from the fixing shaft 161 of the other locking mechanism 160 by an external force so that the position restricting members 120 can be moved away from each other; the locking body 162 extends to the outside of the base body 110 through the operation opening 113. Specifically, when the two lock mechanisms 160 are engaged with each other, the lock groove 162a of the lock body 162 of one lock mechanism 160 is engaged with the fixing shaft 161 of the other lock mechanism 160 in a bottom-up direction. When the downhole applicator 100 descends in the oil and gas well, the portion of the locking body 162 located outside the base 110 is rubbed against the inner wall of the oil and gas well, and the generated force causes the fixing shaft 161 to be unable to be disengaged from the locking groove 162a engaged therewith at all times. After the downhole applicator 100 reaches a predetermined position in the oil and gas well, the downhole applicator 100 is lifted upwards, the part of the locking body 162 located outside the base body 110 is rubbed on the inner wall of the oil and gas well, the generated force enables the locking body 162 to rotate in the direction away from the fixed shaft 161 matched with the locking body 162, the locking body 162 is enabled to be separated from the fixed shaft 161 matched with the locking body, the two locking mechanisms 160 are separated from each other, and the limiting part 120 can move to the expanded position.

Example 2:

the present embodiment provides a downhole tool assembly 010. Fig. 3 is a schematic cross-sectional view of the downhole tool assembly 010 provided in this embodiment. The downhole tool assembly 010 includes the downhole applicator 100 described in example 1 and the downhole tool 200. The downhole tool 200 has a receiving groove 210 formed at an upper end thereof, and the lower end of the base 110 of the downhole applicator 100 is inserted into the receiving groove 210. The inner wall of the receiving groove 210 is opened with a connecting hole 211 corresponding to the working hole 112. When the stop member 120 is in the stop position, the coupling member 150 is inserted into the coupling hole 211, thereby coupling the downhole applicator 100 and the downhole tool 200 together. When the stop member 120 is moved to the expanded position, the application member 130 moves upward to provide space for the coupling members 150 to move radially inward. Since the downhole applicator 100 is now lifted upward, the downhole applicator 100 and the downhole tool 200 co-squeeze the coupling member 150, causing the coupling member 150 to move radially inward and disengage the coupling aperture 211, thereby enabling the downhole tool 200 to disengage the downhole applicator 100. The downhole tool assembly 010 of this embodiment may deploy the downhole tool 200 without jarring by merely lifting the downhole applicator 100 upward and moving the stop member 120 from the stop position to the expanded position. This allows the downhole tool assembly 010 of this embodiment to be adapted for use in a well having a large well inclination and to deliver the downhole tool 200 to a location having a large inclination in the well.

The above description is only a few examples of the present application and is not intended to limit the present application, and those skilled in the art will appreciate that various modifications and variations can be made in the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A downhole applicator, comprising:

the device comprises a columnar base body, a plurality of clamping pieces and a plurality of clamping pieces, wherein a working cavity is formed in the base body, and a working hole for communicating the working cavity with the outside is formed in the base body;

at least two stop members disposed within the working chamber, the stop members configured to reciprocate radially between a stop position adjacent one another and an expanded position away from one another;

an application member disposed within the working lumen, the application member configured to reciprocate axially between a locked position and a released position;

a resilient member configured to apply a resilient force to the application member such that the application member always has a tendency to move to the release position; and

a connecting member disposed within the working chamber;

wherein when the stop member is in the stop position, an end of the stop member abuts an end of the application member to maintain the application member in the locked position; when the application component is located at the locking position, the application component presses the connecting component to enable a part of the connecting component to extend to the outside of the base body through the working hole; when the limiting parts are positioned at the expansion position, an accommodating space is formed between the limiting parts, and the applying part enters the accommodating space and moves to the release position under the action of the elastic part; when the application member is in the release position, the connection member can be fully advanced into the base body by an external force.

2. The downhole applicator of claim 1, wherein:

further comprising a locking mechanism configured to transition between a locked state and an unlocked state; when the locking mechanism is in the locking state, the limiting component is maintained at the limiting position; when the locking mechanism is in the unlocked state, the limiting component moves to the expansion position under the pushing of the applying component.

3. The downhole applicator of claim 2, wherein:

one end of the limiting part is provided with a contact inclined surface which is configured to abut against one end of the applying part.

4. The downhole applicator of claim 3, wherein:

the end of the application member against which the limit member abuts is tapered to fit the contact slope.

5. The downhole applicator of claim 2, wherein:

the downhole applicator comprises two limiting parts and two locking mechanisms, and each limiting part is connected with one locking mechanism; the two locking mechanisms are configured to be capable of cooperating with each other when the stop member is in the stop position to maintain the stop member in the stop position; the two locking mechanisms are configured to be able to separate from each other under the action of an external force when mutually engaged to enable the movement of the stop member to the expanded position.

6. The downhole applicator of claim 5, wherein:

an operation port which is communicated with the working cavity and the outside along the radial direction is formed in the base body; the locking mechanism extends to the outside of the base body through the operation opening.

7. The downhole applicator of claim 6, wherein:

the locking mechanism comprises a fixed shaft and a locking body; the fixed shaft is fixedly connected with the limiting component, and the locking body is rotatably matched with the fixed shaft; a locking groove is formed in the locking body; the fixing shaft of one locking mechanism can be embedded into the locking groove on the locking body of the other locking mechanism so as to maintain the two limiting parts at the limiting positions close to each other; the locking body of one locking mechanism can be separated from the fixed shaft of the other locking mechanism under the action of external force, so that the limiting parts can be far away from each other; the locking body extends to the outside of the base body through the operation opening.

8. The downhole applicator of claim 1, wherein:

the downhole applicator further includes a shaft coupled to the base, the stop member being rotatably coupled to the shaft for reciprocating movement between the stop position and the expanded position.

9. The downhole applicator of claim 1, wherein:

the connecting part is spherical, and the diameter of the connecting part is larger than that of the working hole.

10. A downhole tool assembly, comprising:

comprising a downhole applicator according to any of claims 1-9 and a downhole tool; an accommodating groove is formed in one end of the downhole tool, and one end of the base body is inserted into the accommodating groove; the inner wall of the accommodating groove is provided with a connecting hole corresponding to the working hole;

when the limiting component is positioned at the limiting position, the connecting component is embedded into the connecting hole;

when the limiting part is located at the expansion position, the downhole tool presses the connecting part to enable the connecting part to be separated from the connecting hole.