CN112431564A

CN112431564A - Valve and top drive slurry pipeline device

Info

Publication number: CN112431564A
Application number: CN202011371347.9A
Authority: CN
Inventors: 宋立波; 李陈龙; 陈云召; 陈占荣; 左立朝; 苏炳伟; 胡向阳
Original assignee: Hebei Yongming Geological Project Machinery Co ltd
Current assignee: Hebei Yongming Geological Project Machinery Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-03-02
Anticipated expiration: 2040-11-30
Also published as: CN112431564B

Abstract

The invention provides a valve and a top drive slurry pipeline device, belonging to the technical field of top drive drilling devices, wherein the valve comprises: a valve body having a valve cavity; the transmission shaft is rotatably arranged on the valve body along the wall thickness direction of the valve body; the valve plate is positioned in the valve cavity, is fixedly arranged on the transmission shaft and is suitable for respectively rotating towards two sides of the transmission shaft; the elastic clamping mechanism is suitable for controlling the valve plate to be opened and closed by pressure difference on two sides of the valve plate, the top drive slurry pipeline device comprises a gooseneck and a moving pipeline, and the top drive slurry pipeline device further comprises the valve, and the valve is connected between the gooseneck and the moving pipeline. The invention provides a valve and a top drive slurry pipeline device, and aims to solve the technical problems that slurry is prevented from being wasted and a drilling platform surface is polluted due to the fact that a large amount of slurry flows out when a gooseneck is disconnected with a drill column.

Description

Valve and top drive slurry pipeline device

Technical Field

The invention belongs to the technical field of top drive drilling devices, and particularly relates to a valve and a top drive slurry pipeline device.

Background

The top drive drilling device is a leading-edge technology and equipment of current drilling and becomes a standard product in the petroleum drilling industry, and the so-called top drive drilling device is a drilling mechanical device which directly rotates a drill string from the upper part of a derrick space and feeds the drill string downwards along a special guide rail in the derrick to complete various drilling operations such as rotary drilling of the drill string, circulation of drilling fluid, connection of the drill string, screwing-in and screwing-out, and back reaming. When the top driving drilling device is used for drilling, high-pressure slurry is introduced into a drill string through a traveling pipeline and a gooseneck pipe in sequence, the drill string is rotated to drill, and the high-pressure slurry flows out of a drill bit at the end part of the drill string. The top driving drilling device is characterized in that a gooseneck pipe is disconnected with a drill stem when a drill stem is connected, at the moment, a mud pump stops running, the pressure in a moving pipeline connected with the mud pump is reduced, but the mud liquid level in the moving pipeline is higher than the gooseneck pipe connected with the moving pipeline, a large amount of mud can flow through the gooseneck pipe from the moving pipeline and leak to a drilling platform surface, the mud leaking to the drilling platform surface is difficult to recover, a driller needs to clean the drilling platform surface by using a high-pressure water gun, meanwhile, the drilling platform surface becomes smooth due to the existence of the mud, the driller can slip and hurt easily during the operation on the drilling platform surface, and the mud leakage condition causes the problems of the mud waste, the increase of the labor amount of the driller and the increase. This problem can be solved if a valve is arranged in the slurry pipeline, but the traditional valve is complex in structure and is not suitable for the slurry pipeline.

Disclosure of Invention

The invention aims to provide a valve and a top drive slurry pipeline device, and aims to solve the technical problems that when a gooseneck is disconnected with a drill stem, a large amount of slurry is prevented from flowing out, so that the slurry is wasted, and a drilling table surface is polluted.

In order to achieve the purpose, the invention adopts the technical scheme that: providing a valve comprising:

a valve body having a valve cavity;

the transmission shaft is rotatably arranged on the valve body along the wall thickness direction of the valve body;

the valve plate is positioned in the valve cavity, is fixedly arranged on the transmission shaft and is suitable for respectively rotating towards two sides of the transmission shaft;

the elastic clamping mechanism is positioned on the outer side wall of the valve body and comprises a biasing member connected with one end of the transmission shaft and clamping assemblies symmetrically arranged on two sides of the biasing member; the two elastic clamping terminals in the clamping assembly are suitable for clamping the biasing member to keep the valve plate closed, the valve plate is rotated and opened under the action of external force to drive the biasing member to rotate, and the biasing member overcomes the clamping force of the two elastic clamping terminals to enable the two elastic clamping terminals to be away from each other.

As a specific embodiment, the clamping assembly comprises:

the cylinder is provided with a containing cavity and is fixed on the outer side wall of the valve body;

the two pistons are positioned in the cavity and are suitable for dividing the cavity into three independent chambers;

the compressible gas is filled in the independent chambers at the two ends of the cavity;

the biasing member is located in a separate chamber in the middle of the cavity, and compressible gas in separate chambers at both ends of the cavity exerts biasing forces on the pistons at the respective sides to keep the two pistons gripping the biasing member, and the pistons and the compressible gas in the separate chambers at the same side form the elastic clamping terminal.

As a modified embodiment, the independent chambers at the two ends of the cavity are connected through an intercommunicating pipeline to keep the air pressure balanced.

As a further improved embodiment, the clamping assembly further comprises:

and the energy accumulator is communicated with the communicating pipeline and is suitable for keeping the air pressure in the independent chambers at the two ends of the accommodating cavity at a rated value.

As a specific embodiment, the valve further comprises:

an upper connector adapted to connect a first end of the valve body with a first object; and

a lower connector adapted to connect the second end of the valve body with a second object.

As another specific implementation mode, the cross section of the valve body is in a square ring shape, and the shape of the valve body is matched with the inner wall of the valve body.

As an improved implementation mode, a groove is formed in the inner side wall of the valve body in the axial direction perpendicular to the valve body, and the transmission shaft is located in the groove for limiting.

As a specific embodiment, the biasing member includes a transition section connected to the drive shaft, and a flat shaft section including two oppositely disposed flat surfaces adapted to engage the clamping assembly to hold the valve plate closed, and two oppositely disposed arcuate surfaces adapted to engage the biasing member to overcome the clamping force of the clamping assembly.

As another specific embodiment, the compressible gas is nitrogen.

The valve provided by the invention has the beneficial effects that: compared with the prior art, the valve comprises a valve body, a transmission shaft, a valve plate and a clamping mechanism, the valve is installed between a gooseneck pipe of a top drive drilling device and a moving pipeline, when the top drive drilling device is connected with a drill rod, a slurry pump stops running, the gooseneck pipe is disconnected with a drill column, the slurry liquid level in the moving pipeline is higher than the outlet of the gooseneck pipe, the valve plate rotates around the transmission shaft in advance under the pressure of a liquid column, and the biasing member resists the rotation of the valve plate under the clamping force of the clamping assembly, so that the valve plate cannot be rotated to be opened, the slurry in the moving pipeline is prevented from leaking onto a drill floor, the slurry is saved, and the pollution of the drill floor is.

When the pressure of the high-pressure mud on the biasing part is greater than the clamping force, the clamping force on the biasing part is not enough to resist the rotation of the valve plate, and the valve plate rotates towards the mud flowing direction to be opened, so that the mud flows into the gooseneck pipe from the moving pipeline. The drilling string of the top drive drilling device has the phenomenon of abnormal internal pressure in the working state, at the moment, a mud pump is required to stop working, the gooseneck and the drilling string still need to be kept in a connection state, the mud pressure in the gooseneck is obviously higher than the mud pressure in the moving pipeline, the valve plate rotates around the transmission shaft in advance under the pressure of high-pressure mud, the clamping force of the clamping assembly on the biasing element is insufficient to resist the rotation of the valve plate, at the moment, the valve plate is opened, and mud flows into the moving pipeline from the gooseneck. The valve has simple and easy-to-maintain structure, the valve plate has simpler structural design, and meanwhile, the valve can be automatically opened and closed through the pressure difference state in the slurry pipeline, so that the controllability of the top drive drilling device on slurry is greatly improved, the slurry cost can be saved, and the pollution to an operation table top can be avoided.

The invention also provides a top drive slurry pipeline device which comprises the gooseneck and the moving pipeline and further comprises the valve, wherein the valve is connected between the gooseneck and the moving pipeline.

The top drive slurry pipeline device comprises the valve, so that all the beneficial effects of the valve are achieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a front view of a valve provided in embodiment 1 of the present invention (accumulator not shown);

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 (including the accumulator);

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1 (accumulator not shown);

FIG. 5 is a schematic view showing a coupling structure of a drive shaft and a biasing member of the valve according to embodiment 1 of the present invention;

FIG. 6 is a schematic cross-sectional view of a biasing member in example 1 of the present invention;

fig. 7 is a front view of a top drive mud piping arrangement provided in embodiment 2 of the present invention.

In the figure: 1. a valve body; 2. an elastic clamping mechanism; 21. a biasing member; 211. a flat shaft section; 2111. a plane; 2112. a circular arc surface; 212. a transition section; 22. a clamping assembly; 221. a separate chamber; 222. a piston; 223. a cylinder; 23. an intercommunicating conduit; 24. an accumulator; 25. a piston seal ring; 3. an upper connector; 4. a lower connector; 5. a valve body bolt; 6. a support; 7. a bracket bolt; 8. a valve cavity; 9. a valve plate; 10. a drive shaft; 11. a groove; 12. a seal ring; 13. a gooseneck; 14. a travelling pipeline; 15. a drill string.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings and are used merely for convenience in describing and simplifying the present invention, and do not indicate or imply that the system or component in question must be in a particular orientation, constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a number" means two or more unless specifically limited otherwise.

Example 1

One embodiment of a valve as shown in fig. 1-6, the valve comprising:

a valve body 1 having a valve chamber 8;

the transmission shaft 10 is rotatably arranged on the valve body 1 along the wall thickness direction of the valve body 1;

the valve plate 9 is positioned in the valve cavity 8, is fixedly arranged on the transmission shaft 10 and is suitable for respectively rotating towards two sides of the transmission shaft 10;

the elastic clamping mechanism 2 is positioned on the outer side wall of the valve body 1 and comprises a biasing member 21 connected with one end of the transmission shaft 10 and clamping assemblies 22 symmetrically arranged on two sides of the biasing member 21; the two resilient clamping terminals in the clamping assembly 22 are adapted to clamp the biasing member 21 to hold the valve plate 9 closed, the valve plate 9 being rotated by an external force to open the drive biasing member 21, the biasing member 21 overcoming the clamping force of the two resilient clamping terminals to move the two resilient clamping terminals away from each other.

Above-mentioned valve has adopted elasticity fixture 2, sets up on the lateral wall of valve body 1, easy to maintain and change. The elastic clamping mechanism 2 is provided therein with two opposing elastic clamping terminals having elasticity, and the biasing member 21 is provided between the two elastic clamping terminals, and the two elastic clamping terminals always apply a clamping force to the biasing member 21. When the valve plate 9 rotates under the action of external force and gradually moves from a closed state to an open state, the biasing member 21 rotates together with the valve plate 9 through the transmission shaft 10, in the rotating process, the biasing part of the biasing member 21 jacks up the two elastic clamping terminals to enable the two elastic clamping terminals to be away from each other, and in the process that the two elastic clamping terminals are away from each other, more elastic potential energy is stored on the respective sides of the two elastic clamping terminals; when the external force applied to the valve plate 9 disappears, the biasing element 21 and the valve plate 9 are reset together through the transmission shaft 10, and the two elastic clamping terminals release the stored elastic potential energy and continue to clamp the biasing element 21 to keep the valve plate 9 closed. It should be noted that the valve plate 9 can rotate towards both sides of the drive shaft 10, specifically towards which direction, depending on which direction the valve plate 9 is subjected to. Compared with the common valve in the prior art, the valve has simple structure and easy maintenance, adopts the elastic clamping mechanism 2 as the retaining mechanism of the closed state of the valve plate 9, and has ingenious conception; can realize two-way opening when valve plate 9 receives the effort of equidirectional not, also can realize valve plate 9's automatic re-setting simultaneously, need not extra automatically controlled and control, be applicable to the control to the mud pipeline more, very big promotion top drive drilling equipment to the controllability of mud, both can practice thrift the mud cost, can avoid the operation mesa to be polluted again.

Referring to fig. 1 and 3, as an embodiment of the clamping assembly 22, the clamping assembly 22 further includes: a cylinder 223, two pistons 222, and a compressible gas. Wherein, the cylinder 223 is fixed on the outer side wall of the valve body 1 and has a cavity, two pistons 222 are located in the cavity and divide the cavity into three independent chambers 221, the compressible gas is filled in the independent chambers 221 at the two ends of the cavity, the compressible gas in the independent chambers 221 at the two ends of the cavity has elastic force and applies biasing force on the pistons 222 at the respective sides, and the two pistons 222 are clamped oppositely to the biasing member 21 in the middle. The biasing member 21 is connected with the transmission shaft 10, when the valve plate 9 fixedly connected with the transmission shaft 10 rotates from a closed state to an open state under the action of external force, the transmission shaft 10 simultaneously drives the biasing member 21 to rotate, the biasing portion of the biasing member 21 overcomes the clamping force of two opposite pistons 222 to enable the two pistons 222 to be away from each other, at the moment, the compressible gas in the independent chambers 221 at the two ends is compressed, the clamping force of the two elastic clamping terminals is increased, and the two pistons 222 tend to clamp the biasing member 21 to enable the transmission shaft 10 to rotate back to the closed position of the valve plate 9.

Specifically, the upper end and the lower end of the cylinder 223 are respectively connected with two supports 6 by welding or other fixing modes, the supports 6 are provided with connecting lug plates, the cylinder 223 is fixedly mounted on the outer side wall of the valve body 1 through the connecting lug plates and support bolts 7, the axis of the cylinder 223 is parallel to the axis of the valve body 1, and the non-parallel arrangement can be realized.

As a variant, the compressible gas can also be replaced by a compression spring, the piston 222 by a clamping plate, and correspondingly the compression spring exerts a biasing force on the respective clamping plate, both clamping plates clamping the intermediate biasing element 21. As the biasing member 21 overcomes the clamping force of the two jaws of the clamping assembly 22 to move the two pistons 222 away from each other, the compression spring is compressed and the clamping force increases, the jaws tending to clamp the biasing member 21 to rotate the drive shaft 10 back to the closed position of the valve plate 9.

It should be noted that, in the embodiment of the present invention, it is preferable to use the clamping assembly 22 of compressible gas type, and the compressible gas can uniformly press on the surface of the piston 222 in the cylinder 223, so that the biasing force acting on the piston 222 is uniform and stable, and the working stability of the clamping assembly 22 is improved; the pressure of the compressible gas in the cylinder 223 can be easily monitored, the control of the pressure of the compressible gas in the cylinder 223 can be easily achieved, and the use of the compressible gas to apply the biasing force to the clamping assembly 22 can improve the stability of the operation thereof and can be easily controlled.

Referring to fig. 3, as a modified embodiment, the independent chambers 221 located at both ends of the chamber are connected by an interconnecting pipe 23 to maintain the air pressure balance between the two independent chambers 221 located at both ends of the chamber in the cylinder 223. The compressible gas in the cavity may be lost during the operation of the clamping assembly 22, which results in different air pressures in the independent cavities 221 at the two ends of the cavity, and such different air pressures may result in a change in the action point of the biasing force exerted by the compressible gas, which further results in a deterioration of the control effect of the clamping assembly 22 on the biasing member 21, and the independent cavities 221 at the two ends of the cavity are communicated through the communicating pipeline 23, which can effectively solve the above-mentioned problems and improve the operation stability of the elastic clamping mechanism 2.

Referring to fig. 3, as a modified embodiment, the clamping assembly 22 further comprises an accumulator 24, the accumulator 24 being in communication with the communication line 23 and adapted to maintain the gas pressure in the separate chambers 221 at the two ends of the chamber at a nominal value. The accumulator 24 is an energy storage device, the communicating pipe 23 is connected with the accumulator 24, and the energy stored in the accumulator 24 is suitable for stabilizing the air pressure in the independent chambers 221 at the two ends of the accommodating cavity, so that the working stability of the elastic clamping mechanism 2 is improved. The above-mentioned rated value is set according to the requirements of the actual working environment.

Referring to fig. 1, as another embodiment of the present application, a valve further includes:

an upper connection head 3 adapted to connect a first end of the valve body 1 with a first object; and

a lower connection head 4 adapted to connect a second end of the valve body 1 with a second object. Wherein the first object is a gooseneck 13 and the second object is a swimming pipe 14. The upper connector 3 and the lower connector 4 are connected with the valve body 1 through a valve body bolt 5, the upper connector 3 and the lower connector 4 are respectively used for connecting the gooseneck 13 and the moving pipeline 14, and the valve can control the flow of slurry in the gooseneck 13 and the moving pipeline 14 after connection.

Referring to fig. 2 and 4, as a specific implementation manner of the embodiment of the present invention, the cross section of the valve body 1 is a square ring shape, and the shape of the valve body 1 matches with the inner wall of the valve body 1. The cross section of the square annular valve body 1 is suitable for matching with a square valve plate 9, and the square valve plate 9 can be rotationally opened and closed in the valve body 1. As a modified embodiment, the cross section of the valve body 1 may be a semicircle, and the transmission shaft 10 is fixed on the straight side of the semicircle.

Referring to fig. 4, as an improved embodiment, a groove 11 is formed on an inner side wall of the valve body 1 along an axial direction perpendicular to the valve body 1, and the transmission shaft 10 is located in the groove 11 for limiting. The installation structure of the transmission shaft 10 positioned in the groove 11 for limiting is more stable and is easy to realize the sealing connection with the inner wall of the valve body 1.

Referring to fig. 5 and 6, as an embodiment of the present invention, the biasing member 21 includes a transition section 212 connected to the transmission shaft 10, and a flat shaft section 211, wherein the flat shaft section 211 includes two opposite flat surfaces 2111 adapted to cooperate with the clamping assembly 22 to keep the valve plate 9 closed, and two opposite circular surfaces 2112 adapted to cooperate with the biasing member 21 to overcome the clamping force of the clamping assembly 22. When the valve plate 9 is in a closed state, the two planes 2111 on the flat shaft section 211 are respectively in close contact with the elastic clamping terminals on the respective sides; when the valve plate 9 is acted by external force and the external force reaches the rated pressure, the valve plate 9 is rotated to be opened, the transmission shaft 10 and the flat shaft section 211 are driven to rotate simultaneously, and the two arc surfaces 2112 on the flat shaft section 211 are used as bias portions to be gradually abutted against the clamping assembly 22 along with the rotation of the flat shaft section 211. The transition section 212 is suitable for connecting the transmission shaft 10 and the flat shaft section 211, the transition section 212 can be in sealed and rotatable connection with the valve body 1 and the cylinder 223 wall, and a sealing ring 12 is arranged at the contact position of the transition section 212 and the valve body 1 and the cylinder 223 wall.

Referring to fig. 3, as an embodiment of the present invention, the compressible gas is nitrogen. The nitrogen has good compression performance at normal temperature and is not easy to liquefy.

Referring to fig. 3, as a specific implementation manner of the embodiment of the present invention, a piston seal ring 25 is disposed at a contact position of the piston 222 and an inner wall of the cylinder 223. The piston seal ring 25 can prevent the leakage of compressible gas when the piston 222 slides relative to the inner wall of the cylinder 223, and improve the working stability of the elastic clamping mechanism 2.

Example 2

As shown in fig. 7, a concrete embodiment of the top drive slurry pipeline apparatus provided by the present invention includes a gooseneck 13 and a travelling pipeline 14, and further includes a valve in embodiment 1, where the valve is connected between the gooseneck 13 and the travelling pipeline 14. The gooseneck 13 communicates with a drill string 15.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A valve, comprising:

a valve body having a valve cavity;

2. The valve of claim 1, wherein the clamping assembly comprises:

3. The valve of claim 2, wherein the separate chambers at the two ends of the chamber are connected by interconnecting lines to maintain gas pressure balance.

4. The valve of claim 3, wherein the clamping assembly further comprises:

5. The valve of claim 1, further comprising:

6. The valve of claim 1, wherein the valve body has a square annular cross-section, and the valve body has a profile that matches the inner wall of the valve body.

7. The valve of claim 6, wherein a groove is formed on an inner side wall of the valve body along an axial direction perpendicular to the valve body, and the transmission shaft is positioned and limited in the groove.

8. The valve of claim 1, wherein the biasing member includes a transition section coupled to the drive shaft, and a flat shaft section including two oppositely disposed flat surfaces adapted to engage the clamping assembly to hold the valve plate closed, and two oppositely disposed arcuate surfaces adapted to engage the biasing member against the clamping force of the clamping assembly.

9. The valve of claim 2, wherein the compressible gas is nitrogen.

10. A top drive mud piping installation comprising a gooseneck and a travelling pipe, further comprising a valve according to any one of claims 1 to 9, the valve being connected between the gooseneck and the travelling pipe.