CN221761863U - A kind of circulating drilling tool plug valve - Google Patents

Abstract

The utility model relates to the technical field of oil drilling tool control valves, and specifically to a circulatory drilling tool plug valve; it comprises a valve body and an auxiliary mechanism, wherein the auxiliary mechanism comprises a first valve seat, a support seat, a second valve seat, a valve ball, a support spring and a rotating device. When in use, the support seat is used to slow down the sliding and running-in between the second valve seat and the valve body, and reduce the wear of the valve body. The support seat can be replaced, and the valve ball is controlled by the rotating device to rotate the opening device. By changing the matching position of the central through hole of the valve ball and the through holes on the first valve seat and the second valve seat, the drilling fluid channel is opened or closed. By arranging that the support spring and the second valve seat can slide on the support seat, the valve ball can be closed and a pump can be opened for circulating well pressure reduction, thereby realizing circulating drilling without pressure drop, overflow check and blowout prevention, and interception treatment in the drilling construction, and the safety can be improved, and the safety of the operating personnel can be better guaranteed.

Description

A kind of circulating drilling tool plug valve

Technical Field

The utility model relates to the technical field of oil drilling tool control valves, in particular to a circulatable drilling tool cock valve.

Background Art

During the oil drilling construction process, the drill plug valve is installed at the upper and lower ends of the square drill pipe. It can be divided into an upper plug valve and a lower plug valve. During use, the drilling fluid can pass through the drill plug valve without pressure drop. When overflow occurs underground, the drill channel can be closed to prevent blowout. It is also used for intercepting the drilling fluid in the square drill pipe.

At present, the drill plug valve used in the prior art includes a valve body, upper and lower valve seats, a ball valve and a ball valve rotating part. When working, the valve is opened and closed by rotating the valve ball to change the matching position of the valve ball center hole and the upper and lower valve seat through holes, thereby achieving blowout prevention and flow interception.

However, in actual use, when the isolation pressure exceeds 2MPa or above, the plug valve of this structure will be difficult to open after being closed. As a result, when a blowout occurs in the well and circulating well pressure is required, the timing of the well pressure operation will be delayed, and even a serious blowout accident may occur. If the operator fails to open the plug valve in time due to negligence and starts the pump first, the liquid pressure in the ground high-pressure manifold will surge, causing equipment rupture and damage, and even casualties, which is not conducive to safe use.

Utility Model Content

The utility model aims to provide a circulatory drill plug valve, which can realize circulatory drilling without pressure drop, overflow check and blowout prevention and interception treatment during drilling construction, and can improve safety and better protect the safety of operators.

To achieve the above-mentioned purpose, the utility model provides a circulated drilling tool plug valve, comprising a valve body and an auxiliary mechanism;

The auxiliary mechanism includes a first valve seat, a support seat, a second valve seat, a valve ball, a support spring and a rotating device. The first valve seat is fixedly connected to the valve body and is located in the valve body. The support seat is fixedly connected to the valve body and is located below the first valve seat. The second valve seat is slidably connected to the support seat and is located on a side of the support seat close to the first valve seat. The second valve seat has a circulation hole, which is located on the second valve seat. The valve ball is slidably connected to the valve body. The valve ball is slidably connected to the first valve seat and is slidably connected to the second valve seat and is located on a side of the first valve seat close to the second valve seat. One end of the support spring abuts the support seat, and the other end of the support spring abuts the second valve seat. The support spring is arranged between the support seat and the second valve seat, and the rotating device is arranged on a side of the valve body close to the valve ball.

Wherein, the valve ball has a matching protrusion, and the matching protrusions are symmetrically arranged on both sides of the valve ball.

Wherein, the rotating device includes a sealing plate and a matching component. The sealing plate is fixedly connected to the valve body and is located on a side of the valve body close to the matching protrusion; the matching component is arranged on a side of the sealing plate close to the valve ball.

Wherein, the mating component includes a rotating block and a sealing seat, the rotating block is rotatably connected to the sealing plate, cooperates with the mating protrusion, and is located on the side of the sealing plate close to the valve ball; the sealing seat is rotatably connected to the rotating block, fixedly connected to the sealing plate, and is located on the sealing plate.

Wherein, the auxiliary mechanism also includes a first stabilizing block and a second stabilizing block, the first stabilizing block is fixedly connected to the valve body and located on the side of the valve body close to the sealing plate; the second stabilizing block is fixedly connected to the valve body and located on the side of the valve body away from the first stabilizing block.

The utility model discloses a circulating drilling tool plug valve, a first valve seat is installed in the valve body, a support seat is installed in the valve body and is located below the first valve seat, the second valve seat is slidably connected to the support seat, the second valve seat has a circulation hole, the valve ball is slidably connected to the valve body, the valve ball is slidably connected to the first valve seat, and is slidably connected to the second valve seat, one end of the support spring abuts the support seat, and the other end of the support spring abuts the second valve seat, and a rotating device is arranged on the side of the valve body close to the valve ball. When in use, the support seat is used to slow down the sliding running-in between the second valve seat and the valve body, and reduce the wear amount of the valve body. The support seat can be replaced, and the valve ball is controlled by the rotating device to rotate the opening device, and the drilling fluid channel is opened or closed by changing the matching position of the central through hole of the valve ball and the through holes on the first valve seat and the second valve seat. The support spring and the second valve seat can be set to slide on the support seat, so that the valve ball can be closed and the pump can be opened for circulation and well pressure reduction, thereby realizing that in the drilling construction, circulating drilling without pressure drop, overflow check and blowout prevention and interception treatment can be realized, and the safety can be improved, and the safety of the operating personnel can be better guaranteed.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

FIG1 is a schematic diagram of the overall structure of a recyclable drilling tool plug valve according to a first embodiment of the present utility model.

FIG. 2 is a cross-sectional view of a valve ball according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram of the installation position of the sealing seat of the first embodiment of the utility model.

FIG. 4 is a schematic diagram of the overall structure of a recyclable drilling tool plug valve according to a second embodiment of the present utility model.

In the figure: 101-valve body, 102-first valve seat, 103-support seat, 104-second valve seat, 105-valve ball, 106-support spring, 107-matching protrusion, 108-sealing plate, 109-rotating block, 110-sealing seat, 111-circulation hole, 201-first stabilizing block, 202-second stabilizing block.

DETAILED DESCRIPTION

Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

Embodiment 1:

As shown in Figures 1 to 3, Figure 1 is a schematic diagram of the overall structure of a recyclable drilling tool plug valve, Figure 2 is a cross-sectional view of a valve ball 105, and Figure 3 is a schematic diagram of the installation position of a sealing seat 110. The utility model provides a recyclable drilling tool plug valve: including a valve body 101 and an auxiliary mechanism, the auxiliary mechanism includes a first valve seat 102, a support seat 103, a second valve seat 104, a valve ball 105, a support spring 106 and a rotating device, the rotating device includes a sealing plate 108 and a matching component, and the matching component includes a rotating block 109 and a sealing seat 110. Through the above scheme, it can be realized in the drilling construction, it can realize the circulation drilling without pressure drop, overflow check and blowout prevention and interception treatment, and can improve safety and better protect the safety of operators. It can be understood that the above scheme can be realized in the drilling construction, it can realize the circulation drilling without pressure drop, overflow check and blowout prevention and interception treatment, and improve safety and better protect the safety of operators.

In this embodiment, male and female connecting threads are provided at both ends of the valve body 101 for easy installation.

The first valve seat 102 is fixedly connected to the valve body 101 and is located in the valve body 101. The support seat 103 is fixedly connected to the valve body 101 and is located below the first valve seat 102. The second valve seat 104 is slidably connected to the support seat 103 and is located on the side of the support seat 103 close to the first valve seat 102. The second valve seat 104 has a circulation hole 111, and the circulation hole 111 is located on the second valve seat 104. The valve ball 105 is slidably connected to the valve body 101, and the valve ball 105 is slidably connected to the first valve seat 104. 2 is slidably connected, and is slidably connected with the second valve seat 104, and is located on the side of the first valve seat 102 close to the second valve seat 104, one end of the support spring 106 abuts against the support seat 103, and the other end of the support spring 106 abuts against the second valve seat 104, the support spring 106 is arranged between the support seat 103 and the second valve seat 104, the rotating device is arranged on the side of the valve body 101 close to the valve ball 105, the first valve seat 102 is installed on the valve body 101 by bolts, the bolts are installed with countersunk heads, and the support seat 103 is installed with countersunk heads. The second valve seat 104 is provided with a plurality of circular holes 111, and the plurality of circular holes 111 are arranged in an annular array outside the central through hole of the second valve seat 104. The second valve seat 104 is provided with a semicircular groove, and the support seat 103 is provided with a semicircular groove. At the same time, a rectangular guide protrusion is provided on the second valve seat 104, which is slidably matched with the slide groove provided on the support seat 103 to realize sliding guidance. The semicircular groove and the semicircular groove on the support seat 103 are combined to form a circular groove, and the support spring 106 is arranged inside. When the valve ball 105 rotates, the second valve seat 104 can slide vertically and reset after sliding during the rotation process, and the support spring 106 will be compressed and released. After the first valve seat 102, the support seat 103, the second valve seat 104 and the valve ball 105 are arranged, they cooperate to form a sealing pair. The rotating device is arranged on the side of the valve body 101 close to the valve ball 105, which is used to realize the rotation of the valve ball 105.

Secondly, the valve ball 105 has a matching protrusion 107, and the matching protrusion 107 is symmetrically arranged on both sides of the valve ball 105. The matching protrusion 107 is symmetrically arranged on both sides of the valve ball 105 to facilitate the rotation of the valve ball 105 and adjust the position of its central through hole.

Then, the rotating device includes a sealing plate 108 and a mating component. The sealing plate 108 is fixedly connected to the valve body 101 and is located on the side of the valve body 101 close to the mating protrusion 107; the mating component is arranged on the side of the sealing plate 108 close to the valve ball 105, and the valve body 101 is symmetrically provided with installation cavities to facilitate the installation of the sealing plate 108. The sealing plate 108 is installed on the valve body 101 by bolts, and the bolts are countersunk installations. The mating component is arranged on the side of the sealing plate 108 close to the valve ball 105 to achieve rotational fit.

Finally, the rotating block 109 is rotatably connected to the sealing plate 108, and cooperates with the matching protrusion 107, and is located on the side of the sealing plate 108 close to the valve ball 105; the sealing seat 110 is rotatably connected to the rotating block 109, and is fixedly connected to the sealing plate 108, and is located on the sealing plate 108. The rotating block 109 is composed of a grooved block part and a round shaft part on the front side. The grooved block part can be inserted into the matching protrusion 107, and the round shaft part is installed on the sealing plate 108 through a rotating bearing. An inner hexagonal hole is opened on the outer end face of the round shaft part for easy rotation. A sealing gasket is arranged on the contact surface between the sealing plate 108 and the valve body 101 for leak-proof sealing. A skeleton-type sealing ring is embedded and installed on the sealing seat 110 to facilitate sealing the outer side of the round shaft part of the rotating block 109 and also to facilitate the rotation of the rotating block 109.

When the utility model is used for drilling construction, it is possible to achieve circulation drilling without pressure drop, overflow check and blowout prevention, and interception treatment, and it is possible to improve safety and better protect the safety of operators. The valve body 101 is installed at the male thread at the lower end of the square drill rod and the female thread of the wellhead drilling tool. After the connection is completed, during normal drilling operations, the rotating block 109 is rotated by an inner hexagonal wrench to drive the valve ball 105 to rotate. The center hole of the valve ball 105 is connected to the center holes of the valve body 101, the first valve seat 102, the support seat 103 and the second valve seat 104, so that circulation without pressure drop can be achieved. When the square drill rod is removed, the well is shut in and the circulation is killed, the valve ball 105 is rotated 90 degrees with an inner hexagonal wrench to make the center hole of the valve ball 105 connected to the valve body 101, the first valve seat 102, the support seat 103 and the second valve seat 104. The center holes of the first valve seat 102, the support seat 103 and the second valve seat 104 are perpendicular to each other and not connected, so that the drilling fluid channel can be closed to achieve interception, prevent spillage and shut in the well for blowout prevention. During circulation well killing, the valve ball 105 is pressed down and moved under the action of the pump pressure, pressing down the second valve seat 104 and the support spring 106. At this time, the valve ball 105 is separated from the first valve seat 102, so that the drilling fluid channel is opened, and the liquid will enter the drill tool annulus along the valve seat center hole of the first valve seat 102 and the circulation hole 111 on the second valve seat 104 to achieve circulation well killing operation, thereby realizing circulation drilling without pressure drop, overflow check for blowout prevention and interception treatment during drilling construction, and improving safety and better ensuring the safety of operators.

Embodiment 2:

As shown in FIG. 4 , FIG. 4 is a schematic diagram of the overall structure of a recyclable drilling tool plug valve. On the basis of the first embodiment, the utility model provides a recyclable drilling tool plug valve, and the auxiliary mechanism further includes a first stabilizing block 201 and a second stabilizing block 202 .

Among them, the first stabilizing block 201 is fixedly connected to the valve body 101 and is located on the side of the valve body 101 close to the sealing plate 108; the second stabilizing block 202 is fixedly connected to the valve body 101 and is located on the side of the valve body 101 away from the first stabilizing block 201. The first stabilizing block 201 and the second stabilizing block 202 are of the same size and are both installed on the valve body 101 by bolts. They are symmetrically installed and the bolts are installed using countersunk type.

In this embodiment, by providing the first stabilizing block 201 and the second stabilizing block 202 , the position of the sealing plate 108 after installation is further limited, thereby improving the stability of the device.

What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims (5)

1. A recyclable drilling tool plug valve comprises a valve body, and is characterized in that,

The device also comprises an auxiliary mechanism;

The auxiliary mechanism comprises a first valve seat, a supporting seat, a second valve seat, a valve ball, a supporting spring and a rotating device, wherein the first valve seat is fixedly connected with the valve body and is positioned in the valve body, the supporting seat is fixedly connected with the valve body and is positioned below the first valve seat, the second valve seat is slidably connected with the supporting seat and is positioned on one side of the supporting seat, which is close to the first valve seat, the second valve seat is provided with a circulating hole, the circulating hole is positioned on the second valve seat, the valve ball is slidably connected with the valve body, the valve ball is slidably connected with the first valve seat and is slidably connected with the second valve seat and is positioned on one side of the first valve seat, one end of the supporting spring is abutted to the supporting seat, the other end of the supporting spring is abutted to the second valve seat, the supporting spring is arranged between the supporting seat and the second valve seat, and the rotating device is arranged on one side, which is close to the valve body.

2. The recyclable drilling plug valve of claim 1,

The valve ball is provided with matching bulges, and the matching bulges are symmetrically arranged on two sides of the valve ball.

3. The recyclable drilling plug valve of claim 2,

The rotating device comprises a sealing plate and a matching component, wherein the sealing plate is fixedly connected with the valve body and is positioned on one side of the valve body, which is close to the matching bulge; the matching component is arranged on one side of the sealing plate, which is close to the valve ball.

4. The recyclable drilling plug valve of claim 3,

The matching component comprises a rotating block and a sealing seat, wherein the rotating block is rotationally connected with the sealing plate, matched with the matching bulge and positioned on one side of the sealing plate close to the valve ball; the sealing seat is rotationally connected with the rotating block, fixedly connected with the sealing plate and positioned on the sealing plate.

5. The recyclable drilling plug valve of claim 3,

The auxiliary mechanism further comprises a first stabilizing block and a second stabilizing block, wherein the first stabilizing block is fixedly connected with the valve body and is positioned on one side of the valve body, which is close to the sealing plate; the second stabilizing block is fixedly connected with the valve body and is positioned on one side of the valve body away from the first stabilizing block.