阅读说明：本技术 可变径钻杆防喷盒装置 (Diameter-variable drill rod blowout prevention box device ) 是由 王建斌 杨海平 彭小平 刘俊君 于 2019-11-05 设计创作，主要内容包括：本发明涉及可变径钻杆防喷盒装置,包括外全封盖板、内半封盖板、圆筒外壳和下盖板,所述外全封盖板、内半封盖板位于圆筒外壳的顶部,所述下盖板位于圆筒外壳的底部；所述圆筒外壳内部设置有引导板和内造斜面板；所述内半封盖板的内缘嵌有第一密封槽条,所述第一密封槽条内嵌第一变径密封圈；所述内造斜面板的内缘嵌有第二密封槽条,所述第二密封槽条内嵌第二变径密封圈；所述下盖板的内缘嵌有第三密封槽条,所述第三密封槽条内嵌第三变径密封圈。本发明可实现钻井液再次回收利用,防止起钻卸单根过程中的钻井液浪费,做到钻井液不落地。(The invention relates to a variable-diameter drill rod blowout prevention box device which comprises an outer full-sealing cover plate, an inner half-sealing cover plate, a cylinder shell and a lower cover plate, wherein the outer full-sealing cover plate and the inner half-sealing cover plate are positioned at the top of the cylinder shell, and the lower cover plate is positioned at the bottom of the cylinder shell; a guide plate and an inner inclined plane plate are arranged inside the cylindrical shell; a first sealing groove strip is embedded in the inner edge of the inner half cover plate, and a first reducing sealing ring is embedded in the first sealing groove strip; a second sealing groove strip is embedded in the inner edge of the built-in inclined plane plate, and a second reducing sealing ring is embedded in the second sealing groove strip; a third sealing groove strip is embedded in the inner edge of the lower cover plate, and a third reducing sealing ring is embedded in the third sealing groove strip. The drilling fluid recycling device can recycle the drilling fluid again, prevent the drilling fluid from being wasted in the process of pulling out the drill and discharging single, and prevent the drilling fluid from falling to the ground.)

1. The variable-diameter drill rod blowout prevention box device is characterized by comprising an outer full-sealing cover plate, an inner half-sealing cover plate, a cylinder shell and a lower cover plate, wherein the outer full-sealing cover plate and the inner half-sealing cover plate are positioned at the top of the cylinder shell, and the lower cover plate is positioned at the bottom of the cylinder shell; a guide plate and an inner inclined plane plate are arranged inside the cylindrical shell; the inner half cover plate is arranged on the inner side of the outer full cover plate, the inner half cover plate is hinged with the outer full cover plate through a hinge, and a round hole is formed in the middle of the inner half cover plate;

the upper table surface of the guide plate is fixed on the outer full-sealing cover plate, the lower table surface of the guide plate is fixed on the inner wall of the cylinder shell, and the guide plate is conical; a first sealing groove strip is embedded in the inner edge of the inner half cover plate, and a first reducing sealing ring is embedded in the first sealing groove strip;

the inner inclined plane plate is an inclined elliptical plate, a round hole is formed in the middle of the inner inclined plane plate, the upper end of the inner inclined plane plate is located in the middle of the cylindrical shell, and the lower end of the inner inclined plane plate is located above the lower cover plate; a second sealing groove strip is embedded in the inner edge of the built-in inclined plane plate, and a second reducing sealing ring is embedded in the second sealing groove strip;

the middle part of apron is equipped with the round hole down, the inner edge of apron has inlayed the third sealed channel strip down, embedded third reducing sealing washer of third sealed channel strip.

2. The variable diameter drill rod blowout preventer assembly according to claim 1, wherein the barrel housing comprises two half barrels that are split, and the two half barrels are hinged through hinges and locked through a locking device.

3. The variable diameter drill pipe blowout preventer assembly according to claim 1, wherein a handrail is disposed on the barrel housing.

4. The variable diameter drill pipe blowout preventer assembly according to claim 1, wherein a spring is provided on the hinge.

5. The variable diameter drill pipe blowout preventer assembly according to claim 1, wherein the barrel housing is threadably connected to a draw-up external screw.

6. The variable-diameter drill rod blowout prevention box device according to claim 1, wherein a lifting system is arranged at the bottom of the round through shell and comprises a lifting rod, an upper slide rail, a lower slide rail, a slide block and a bottom plate, the upper slide rail is fixed at the bottom of the cylindrical shell, the lower slide rail is fixed on a floor, the slide block is arranged on each of the upper slide rail and the lower slide rail, and the slide block is fixedly connected with the lifting rod.

7. The variable diameter drill pipe blowout preventer assembly according to claim 1, wherein universal wheels are disposed below the floor.

Technical Field

The invention relates to the technical field of drilling, in particular to a variable-diameter drill rod blowout prevention box device.

Background

In the exploration, development and drilling of petroleum and geological mines, when a single joint is connected after the drilling is started, a large amount of drilling fluid flows out or gushes out of a drill rod and splashes down on a platform, so that the drilling fluid is wasted, the platform is seriously polluted, and the operation is seriously influenced or even the health is threatened. In the prior art, a plurality of built-in near-bit type drilling tool mud blowout preventers are developed, the built-in near-bit type drilling tool mud blowout preventers are positioned at drill collar parts, but the built-in near-bit type drilling tool mud blowout preventers are rarely used on site, and are not used much mainly because of being easy to damage and inconvenient to maintain once damaged. In the prior art, a set of mechanical and electrical integrated devices is used for automatic gas injection. The device system controls the liquid level height of drilling fluid in the drill rod during tripping by controlling the pressure of the wellhead, the effect is good, but the field application is very little, and the reason is also because the maintenance is complicated and the cost is too high. With the development of modern drilling towards the fastest and the better, the simple drill pipe blowout prevention box is invented on site, and the device is installed on a wellhead tool. After the drilling fluid is pulled out and the shackle is sleeved at the joints of the two vertical columns, the drilling fluid is pulled out continuously after the drilling fluid overflows completely. Although the device is easy to operate and simple in design, the size is heavy, the sealing effect is poor, secondary leakage often occurs, the most time is long, the drilling time is delayed, and the efficiency is influenced.

Disclosure of Invention

The invention aims to solve the technical problem of providing a variable-diameter drill rod blowout prevention box device which can prevent drilling fluid from falling to the ground when a single drill rod is normally unloaded.

The technical scheme adopted by the invention for solving the technical problems is as follows: constructing a variable-diameter drill rod blowout prevention box device, which comprises an outer full-sealing cover plate, an inner half-sealing cover plate, a cylinder shell and a lower cover plate, wherein the outer full-sealing cover plate and the inner half-sealing cover plate are positioned at the top of the cylinder shell, and the lower cover plate is positioned at the bottom of the cylinder shell; a guide plate and an inner inclined plane plate are arranged inside the cylindrical shell; the inner half cover plate is arranged on the inner side of the outer full cover plate, the inner half cover plate is hinged with the outer full cover plate through a hinge, and a round hole is formed in the middle of the inner half cover plate;

the upper table surface of the guide plate is fixed on the outer full-sealing cover plate, the lower table surface of the guide plate is fixed on the inner wall of the cylinder shell, and the guide plate is conical; a first sealing groove strip is embedded in the inner edge of the inner half cover plate, and a first reducing sealing ring is embedded in the first sealing groove strip;

the inner inclined plane plate is an inclined elliptical plate, a round hole is formed in the middle of the inner inclined plane plate, the upper end of the inner inclined plane plate is located in the middle of the cylindrical shell, and the lower end of the inner inclined plane plate is located above the lower cover plate; a second sealing groove strip is embedded in the inner edge of the built-in inclined plane plate, and a second reducing sealing ring is embedded in the second sealing groove strip;

the middle part of apron is equipped with the round hole down, the inner edge of apron has inlayed the third sealed channel strip down, embedded third reducing sealing washer of third sealed channel strip.

In the scheme, the cylinder shell comprises two half cylinders which are oppositely opened, the two half cylinders are hinged through hinges, and locking is realized through a locking device.

In the above scheme, the cylinder shell is provided with a handrail.

In the above scheme, the hinge is provided with the spring.

In the scheme, the cylinder shell is connected with the outer thread of the drawing machine.

In the above scheme, the bottom of the round through shell is provided with a lifting system, the lifting system comprises a lifting rod, an upper slide rail, a lower slide rail, a sliding block and a bottom plate, the upper slide rail is fixed at the bottom of the cylindrical shell, the lower slide rail is fixed on the floor, the sliding block is arranged on the upper slide rail and the lower slide rail, and the sliding block is fixedly connected with the lifting rod.

In the scheme, universal wheels are arranged below the bottom plate.

The variable-diameter drill rod blowout prevention box device has the following beneficial effects:

1. the device does not change the normal single discharge process flow of a drilling crew, and the purpose of preventing drilling fluid from falling to the ground is fulfilled on the basis of conventional operation; after the drill rod is broken out, the three reducing sealing rings of the device can realize perfect sealing, and the leakage of drilling fluid is prevented.

2. A sealing ring is embedded in the third sealing groove strip to play a role of secondary leakage prevention;

3. the device does not influence the tripping time, and the drill rod can be directly lifted out through the upper cover plate without waiting and waiting;

4. according to the service condition and the drilling fluid performance, the groove reducing sealing ring can be replaced in real time.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic structural view of an open interior of a variable diameter drill pipe blowout preventer package according to the present invention;

FIG. 2 is a top view of the variable diameter drill pipe blowout preventer stack apparatus of the present invention in an operational condition;

FIG. 3 is an elevational view of the variable diameter drill pipe blowout preventer stack apparatus of the present invention in an operational configuration;

FIG. 4 is a drill rod shackle operating state diagram of the variable-diameter drill rod blowout preventer.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1-3, the variable-diameter drill rod blowout preventer box device comprises an outer full-sealing cover plate 1, an inner half-sealing cover plate 2, a hinge 3, a screw 4, a first sealing groove strip 5, a cylinder shell 7, a hinge 8, a screw 10, a guide groove 6, a handrail 9, a screw 11, a locking device 12, an inner inclined plane 13, a second sealing groove strip 14, an outer tie 15, a lower cover plate 16, a third sealing groove strip 25, a screw 20, a lifting rod 19, a screw 18, an upper slide rail 17, a slide block 21, a lower slide rail 26, a bottom plate 22 and a universal wheel 24.

The outer full-sealing cover plate 1 and the inner half-sealing cover plate 2 are connected by a hinge 3, the hinge 3 and the outer full-sealing cover plate 1 are connected by a screw 4, and the upper half part of the outer full-sealing cover plate 1 is provided with a hole groove 201.

The first sealing groove strip 5 is tightly attached to the inner half cover plate 2 through the groove 202 and fixed on the inner half cover plate 2.

The cylinder shell 7 is provided with two half cylinders which are connected with screws 10 by hinges 8, and the outer full-sealing cover plate 1 and the inner half-sealing cover plate 2 are respectively fixed at the tops of the two half cylinders; the lower cover plate 16 is fixed to the bottom of the two half cylinders, respectively, which are connected by the hinge 8 (what the hinges 8 and 27 differ). The loose-leaf 8 is fixed on the round through shell 7 by a screw 11; the cylinder shell 7 is connected with the handrail 9 through a screw 10; the cylinder shell 7 is fixedly connected with a locking device 12; the cylinder shell 7 is in threaded connection with an outer screw 15.

The guiding groove 6 is provided with two half grooves which are respectively fixed at the opening groove 201 of the outer full-sealing cover plate 1.

The inner bevel 13 is an ellipse divided into two, the middle of the ellipse is provided with a groove 203 and a circle with the diameter of the step of the drill rod 23, and the ellipse is connected with the second sealing groove strip 14 in a clinging manner.

The lower cover plate 16 is provided with a groove 204 inside to be closely connected with the third sealing groove strip 25, and the bottom of the lower cover plate 16 is fixedly connected with the upper sliding rail 17.

The upper slide rail 17 and the lower slide rail 26 are connected with the lifting rod 19 through screws, the lifting rod 19 is connected through a screw 20, a groove 205 is formed in the upper slide rail 17 and the lower slide rail 26, a sliding block 21 is arranged in the groove 205, and the upper slide rail 17 and the lower slide rail are connected with the lifting rod 19 through a screw 18.

The bottom plate 22 is fixedly connected with the lower slide rail 26, and the lower part of the bottom plate 22 is fixed with the universal wheel 24 through screws.

The inner half-sealing cover plate 1 also comprises an I-shaped groove 202, a first sealing groove strip 5 is embedded in the groove 202, and a reducing sealing ring is embedded in the first sealing groove strip 5, so that the inner diameter of the cover plate can be adjusted according to the size of the drill rod 2323.

The outer part of the cylinder shell 7 is provided with a handrail 9, a locking device 12 and a three-hinged hinge 8, the handrail 9 and the cylinder shell 7 are fixed through a screw 10, the locking device 12 is positioned on the edge of the front side surface of the cylinder shell 7 and used for closing and locking the cylinder shell 7, the three-hinged hinge 8 is positioned on the edge of the rear side surface of the cylinder shell 7 and used for fixing the shaft of the cylinder shell 7 and rotating around the hinge 8.

The guiding groove 6 is fixed in the cylinder shell 7 and is close to the top, the upper table surface of the guiding groove 6 is fixed on the outer full-sealing cover plate 1, the lower table surface of the guiding groove 6 is fixed on the inner wall of the cylinder shell 7, the drill rod 23 is buckled off and plays a guiding role when approaching the inner half-sealing cover plate 2, and the drill rod 23 is prevented from being pulled over the device in a non-centered mode.

Interior inclined plane 13 is fixed inside drum shell 7, and interior inclined plane 13 middle part is drawn a hole the disc and is slightly greater than drilling rod 23 external diameter, and interior inclined plane 13 inner circle is equipped with recess 203, is equipped with second sealed groove 14 in the recess 203, inlays the sealing washer in the second sealed groove 14, and the device is installed and is sealed drum upper and lower part when drilling rod 23, avoids the drilling fluid to overflow when unloading drilling rod 23 and leaks.

The lower cover plate 16 is fixed at the bottom of the cylinder shell 7, the inner circle of the lower cover plate 16 is hollowed, the inner wall of the lower cover plate is provided with a groove 204, a third sealing groove strip 25 is embedded in the groove 204, a sealing ring is embedded in the third sealing groove strip 25, the device can be installed on the cylinder when the drill rod 23 is installed, the drilling fluid is prevented from overflowing and leaking from the inner inclined plane 13 when the drill rod 23 is unloaded, and the secondary leakage-proof effect is achieved.

The lifting system is fixed on the lower cover plate 16 and the cylinder shell 7 and comprises a lifting rod 19, an upper sliding rail 17, a lower sliding rail 26, a sliding block 21, a bottom plate 22 and a universal wheel 24, wherein the upper sliding rail 17 and the lower sliding rail 26 are respectively positioned at the bottom of the cylinder shell 7 and fixedly connected with the bottom plate 22, the upper sliding rail 17 and the lower sliding rail 26 are connected with the lifting rod 19 through screws 18, a groove 205 is formed in the upper sliding rail 17, a groove 206 is formed in the lower sliding rail 26, the movable sliding block 21 is arranged in the groove, and the sliding block 21 is fixedly connected with the lifting rod 19. The bottom plate 22 is connected with the universal wheel 24 through screws, when the height of the device needs to be adjusted, the position of the slide block 21 is adjusted through a hydraulic system, the height of the lifting rod 19 is adjusted through movement of the slide block 21, and when the position needs to be moved, the position of the device is changed through the universal wheel 24.

The using method of the device comprises the following steps:

in the process of removing a drill and a single drill rod during drilling, after B-type tongs (hydraulic tongs) release a connecting buckle between drill rods, the device is pushed to the position of the drill rods through universal wheels, the upper position and the lower position of a mechanical lifting rod are adjusted through a hydraulic system, the device is determined to be locked and installed through an external handrail of the device, and an upper cover plate, a lower cover plate, a slope making surface and a guide groove are tightly attached to the drill rods. After the installation is finished, the drilling crew carries out normal tripping, the drill rod is continuously lifted to the inner inclined plane to be separated from the lower drill rod buckle, the drilling fluid flows out of the inner inclined plane, the recovery rate is increased through the inclination angle, and the drilling fluid is recovered to the overhead groove by pulling the outer screw; the drill rod is lifted continuously and lifted out of the inner half-sealing cover plate through the guide groove, the inner half-sealing cover plate returns through the automatic spring after the drill rod is completely lifted out, and the drill rod is placed normally subsequently. The drilling fluid recycling device can recycle the drilling fluid again, prevent the drilling fluid from being wasted in the process of pulling out the drill and discharging single, and prevent the drilling fluid from falling to the ground.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.