CN219387851U - Bridge plug ash pouring cylinder - Google Patents

Abstract

The utility model relates to the field of oilfield workover tools, in particular to a bridge plug ash pouring cylinder. The bridge plug ash pouring barrel comprises a barrel body, wherein a barrel cover is arranged at the lower end of the barrel body, one side of the barrel cover is hinged to the barrel body to form a flip structure, a locking cover mechanism is further arranged between the barrel body and the barrel cover, the locking cover mechanism comprises a lock tongue arranged on the barrel cover, the lock tongue is connected with a redirecting transmission mechanism for driving the lock tongue to retreat, and the redirecting transmission mechanism is provided with a power input end for being in pressing fit with the top of the bridge plug. The utility model has the improvement that the cylinder cover is provided with the flip structure, the lock tongue is provided with the redirecting transmission mechanism, when the power input end of the redirecting transmission mechanism is propped against the top of the bridge plug during use, the lock tongue is propped back to unlock the cylinder cover, and the bridge plug can be effectively protected because no violent collision and impact are generated during the process of opening the cover, and in addition, the structure of the ash pouring cylinder is simplified without the help of another part for opening the cover.

Description

Bridge plug ash pouring cylinder

Technical Field

The utility model relates to the field of oilfield workover tools, in particular to a bridge plug ash pouring cylinder.

Background

In the oilfield workover operation process, the construction of beating the bridge plug is frequently needed, and in actual production, the bridge plug is frequently invalid due to the limitation of a bridge plug mechanical structure and the action of stratum pressure after the bridge plug is beaten, so that plugging failure is caused. In order to solve the problem of bridge plug failure, a mode of covering the upper portion of the bridge plug with cement with a certain thickness is adopted, the cement covered on the upper portion of the bridge plug is commonly called a cement cap, the bridge plug can be reinforced and limited, and the bridge plug is ensured to be effective.

The traditional mode of covering the cement cap is to specially go into the underground one-time pipe column, cement is replaced to the upper plane of the bridge plug by using a cement truck circulation mode, the construction efficiency is low, and the common period is 36 hours. The problem of low efficiency of traditional cement cap covering is faced, and the bridge plug ash pouring barrel is generated.

The existing bridge plug ash pouring cylinders are generally divided into two types, wherein one type of ash pouring cylinder is opened by impact crushing, and the other type of ash pouring cylinder is opened by electric detonation. The structure of the ash pouring barrel opened by impact crushing is represented by a bridge plug ash pouring barrel device disclosed in China patent application publication No. CN102071904A and publication date of 5 and 25 in 2011, and a cast iron joint is arranged at the bottom of a barrel body of the ash pouring barrel.

The structure of the ash pouring barrel opened by electric detonation is represented by an electric release ash pouring barrel disclosed in China patent publication No. CN200955376Y, and the publication date of the electric release ash pouring barrel is 10 months and 3 days in 2007. The electric release ash pouring barrel also comprises a barrel body, and when the electric release ash pouring barrel is used, the lower part of the barrel body is provided with an explosion release bolt, the ground is electrified after the electric release ash pouring barrel is arranged on the bridge plug, so that the bolt rod is broken and unlocked at the weakening groove, cement moves out of the ash pouring barrel under the action of gravity, and the cement is poured on the bridge plug.

The two ash pouring barrels can improve the efficiency of covering the cement cap to a certain extent, but the ash pouring barrel opened by impact needs to impact the bridge plug when being opened, so that the bridge plug can be damaged. The ash pouring barrel which is opened by electric detonation has a complex structure because of the arrangement of circuits, and the bridge plug can be damaged by explosion impact.

Disclosure of Invention

The utility model aims to provide a bridge plug ash pouring barrel so as to solve the problems that the existing ash pouring barrel is complex in structure and easy to damage the bridge plug.

In order to solve the problems, the bridge plug ash pouring barrel adopts the following technical scheme: the utility model provides a bridge plug ash pouring barrel, includes the barrel, the lower extreme of barrel is equipped with the cover, one side of cover articulates and connects in the barrel and form flip structure, still be equipped with locking closure mechanism between barrel and the cover, locking closure mechanism is including locating the spring bolt of cover, the spring bolt is connected with and is used for driving its transmission mechanism that changes to that retreats, it has the power input end that is used for with bridge plug top roof pressure fit to change to transmission mechanism.

The beneficial effects are that: the utility model is an improved utility model, the improvement is that the cylinder cover is provided with a flip structure, the cylinder cover is locked in a closed state through the lock tongue, the lock tongue is provided with a redirecting transmission mechanism, when the cement ash is contained and put down by keeping the lower end of the cylinder body closed through the lock tongue, and when the power input end of the redirecting transmission mechanism is propped against the top of the bridge plug in the process of putting down, the lock tongue is propped back to release the locking of the cylinder cover, and at the moment, the cement ash can be poured out by lifting the ash pouring cylinder. The bridge plug can be effectively protected because no severe collision or impact occurs in the uncapping process, and in addition, the uncapping process does not need to use other parts, so that the structure of the ash pouring barrel is simplified.

Further, the redirecting transmission mechanism is a link mechanism. The connecting rod mechanism has the advantages of simple structure and high reliability as a redirecting transmission mechanism.

Still further, the link mechanism includes first connecting rod and second connecting rod, and the one end of first connecting rod is articulated with the barrel, and the other end is articulated with the second connecting rod, and the other end of second connecting rod is articulated with the spring bolt rear portion, and first connecting rod forms the reverse splayed with the second connecting rod, the power input end comprises the one end that is close to first connecting rod of second connecting rod. The connecting rod mechanism formed by the first connecting rod and the second connecting rod is simplified in structure, transmission links are few, and reliability is higher.

Further, the redirecting transmission mechanism comprises a vertical ejector rod, and at least one of the vertical ejector rod and the lock tongue is provided with a redirecting inclined plane matched with the other one. The transmission of the vertical ejector rod and the redirection transmission mechanism formed by the redirection inclined plane can be realized, and the structure is simple.

Further, a groove is formed in the outer side face of the cylinder cover, the lock tongue is located in the groove, and the front end of the lock tongue penetrates through the wall of the groove. The arrangement of the grooves forms an accommodating space for the lock tongue, the lock tongue can be protected, and the lock tongue penetrates through the groove wall of the grooves to form guide limit for the lock tongue by utilizing the groove wall, so that the reliability of the lock tongue is improved.

Further, the cylinder body comprises a main body part in the middle, a tail sleeve is detachably connected to the lower end of the main body part, and the cylinder cover is arranged on the tail sleeve. The tail sleeve can realize the quick replacement of the cylinder cover.

Further, the tail sleeve is detachably connected with the main body part through threaded fit. The threaded fit has the advantage of high disassembly and assembly efficiency.

Furthermore, a thickening ring table is arranged at the lower end of the tail sleeve, and the cylinder cover is arranged on the thickening ring table. The thickening ring table can be used for enhancing the strength of the matched part of the tail sleeve and the cylinder cover.

Further, a lock hole matched with the lock tongue is formed in the cylinder body. Compared with the clamping groove, the locking hole can be matched with the lock tongue more reliably.

Further, the upper end of the cylinder body is detachably connected with an upper joint. The upper joint can realize the quick replacement of the connection position of the cylinder body and the pipe column.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the bridge plug ash pouring barrel of the utility model.

In the figure: 101. an upper joint; 201. a main body portion; 301. a tail sleeve; 302. a hinge ear; 303. a pin hole; 401. a cylinder cover; 501. a second link; 502. a first link; 503. a hinge shaft; 601. and a lock tongue.

Detailed Description

Example 1 of the bridge plug ash pouring barrel of the utility model:

as shown in fig. 1, the bridge plug ash pouring barrel comprises a barrel body, a barrel cover 401 and an upper joint 101.

The cross section of the cylinder is circular, the inner hole forms an ash cavity for containing cement ash, and the cylinder is matched with a corresponding lowering tool (such as a steel wire rope of a test vehicle) to send the cement ash to the top of the bridge plug. It follows that the cross-sectional shape of the barrel interior should not be limited.

In this embodiment, the cylindrical body is configured such that the main body 201 and the tail cover 301 are combined. The main body 201 is cylindrical, the upper end and the lower section of the main body 201 are provided with internal threads, the upper joint 101 is matched with the internal threads at the upper end of the main body 201, the upper joint is detachably connected to the main body 201, and the tail sleeve 301 is matched with the internal threads at the lower end of the main body 201 and is detachably connected with the main body 201.

The lower end of the tail sleeve 301 in this embodiment is provided with a ring table, the outer diameter of which is equal to the outer diameter of the main body portion 201, so that when the tail sleeve 301 is screwed with the main body portion 201, the outer circumferential surface of the ring table is just flush with the outer circumferential surface of the main body portion 201, which is equivalent to thickening the wall thickness at the lower end of the tail sleeve 301 and increasing the strength at that position.

The cylinder cover 401 is mounted on a ring table at the lower end of the tail sleeve 301, and a hinge lug 302 is specifically arranged at one side of the cylinder cover, and is hinged with the tail sleeve 301 through the hinge lug 302, so that a flip cover structure is formed. A locking cover mechanism is arranged at the other side of the cylinder cover 401, a core component of the locking cover mechanism is a lock tongue 601, a pin hole 303 corresponding to the lock tongue 601 is arranged on the tail sleeve 301, and the lock tongue 601 is used for locking the cylinder cover 401 relative to the cylinder body by matching with the pin hole 303 so as to seal the lower end of the cylinder body.

In this embodiment, the latch 601 is located at a side opposite to the hinge lug 302, specifically, a pin structure is adopted, and one end of the latch is inserted into the cylinder cover 401. In this embodiment, the cylinder cover 401 is provided with an inward concave groove, and the lock tongue 601 is inserted into the wall of the groove, and most of the lock tongue is located in the groove, so that the lock tongue 601 can be protected by the groove, and the lock tongue is prevented from being directly impacted by an external object (such as a bridge plug).

In order to unlock the cylinder cover in place, a redirecting transmission mechanism is arranged between the cylinder cover 401 and the cylinder body, and the redirecting transmission mechanism is used for changing vertical movement into movement for driving the lock tongue 601 to retreat, so that the purpose of unlocking the cylinder cover 401 is achieved, and the unlocking device comprises a power input end which is used for being in pressing fit with the top of the bridge plug. In this embodiment, the redirecting transmission mechanism specifically adopts a link mechanism, and in particular, the link mechanism includes a first link 502 and a second link 501, one end of the first link 502 is hinged with the cylinder, the other end is hinged with the second link 501 through a hinge shaft 503, the other end of the second link 501 is hinged with the rear portion of the lock tongue 601, the first link 502 and the second link 501 form an inverted splayed shape, and the power input end is formed by one end of the second link 501 close to the first link.

When the bridge plug is used for sealing the cement cap, cement ash can be firstly filled in the cylinder body in a state that the end cover 401 is closed, then the cylinder body is lowered by using a steel wire rope of a test vehicle, and when the top surface of the bridge plug is reached, the bridge plug can bear against a power input end (particularly one end, close to the first connecting rod 502, of the second connecting rod 501 in the embodiment) of the redirecting transmission mechanism. At this time, the direction-changing transmission mechanism converts the descending motion of the cylinder into the retreating motion of the lock tongue 601, the lock tongue 601 locks the end cover 401 in the process, and then the cylinder is lifted up, so that cement ash can be poured on the top of the bridge plug. Of course, the unlocking process of the end cap may also be as follows: when the limit of the end cover is removed by the lock tongue, the splayed first connecting rod and the splayed second connecting rod of the end cover are not flattened, and the lock tongue still has a retreating space, at the moment, the end cover is directly and automatically opened under the pressure action of cement ash, and cement ash is poured on the top of the bridge plug.

Example 2 of the bridge plug ash pouring barrel of the utility model:

in embodiment 1 of the bridge plug ash pouring barrel of the utility model, the link mechanism adopted by the redirecting transmission mechanism specifically comprises a first link and a second link which are arranged in an inverted splayed manner. In this embodiment, link mechanism has included middle part and barrel articulated crow bar connecting rod to and connect the connecting rod between crow bar connecting rod and spring bolt tail end, and during the use, the lower extreme of crow bar connecting rod is pushed by the bridging plug, and then drives the spring bolt through the connecting rod and retreats.

Example 3 of the bridge plug ash pouring barrel of the utility model:

in example 1 of the bridge plug ash pouring barrel of the utility model, a link mechanism employed for the redirecting transmission mechanism. In this embodiment, the transmission mechanism that changes to has adopted ejector pin mechanism, and it has included vertical ejector pin, has set up the inclined plane that changes to mutually supporting between in vertical ejector pin and the spring bolt, and in the use, when vertical ejector pin was pushed up by the bridging plug top, it changed self vertical motion into the back motion of spring bolt through changing to the inclined plane, accomplishes the unblock to the end cover.

Example 4 of the bridge plug ash pouring barrel of the utility model:

in embodiment 1 of the bridge plug ash pouring barrel of the utility model, the matching position of the lock tongue and the barrel is positioned at the side of the end cover away from the hinge lug. In this embodiment, the fitting position of the lock tongue and the cylinder is set at other positions of the end cover, which can also play a role in locking and unlocking the end cover.

Example 5 of the bridge plug ash pouring barrel of the utility model:

in embodiment 1 of the bridge plug ash pouring barrel of the utility model, the lock tongue adopts a pin type reciprocating motion structure. In this embodiment, the spring bolt has adopted the structure, and its middle part articulates on the barrel, and one end hooks the end cover, and the other end is the cantilever structure, wholly forms the seesaw structure, and during the use, its cantilever structure's one end is pushed by the bridging plug, and the swing retreats, and then unblock is accomplished to the other end.

Example 6 of the bridge plug ash pouring barrel of the utility model:

in embodiment 1 of the bridge plug ash pouring barrel of the utility model, the barrel adopts a structure that a main body part is combined with a tail sleeve. In this embodiment, the cylinder adopts an integral structure, and can be processed at one time.

Claims (10)

1. The utility model provides a bridge plug ash pouring barrel, includes the barrel, the lower extreme of barrel is equipped with the cover, its characterized in that, one side of cover articulates and connects in the barrel and form flip structure, still be equipped with locking closure mechanism between barrel and the cover, locking closure mechanism is including locating the spring bolt of cover, the spring bolt is connected with and is used for driving its return to change drive mechanism, change to drive mechanism have be used for with bridge plug top roof pressure complex power input.

2. The bridge plug ash pouring barrel of claim 1, wherein said redirecting transmission mechanism is a linkage mechanism.

3. The bridge plug ash pouring barrel according to claim 2, wherein the link mechanism comprises a first link and a second link, one end of the first link is hinged with the barrel, the other end of the first link is hinged with the second link, the other end of the second link is hinged with the rear part of the lock tongue, the first link and the second link form an inverted splayed shape, and the power input end is formed by one end of the second link, which is close to the first link.

4. The bridge plug ash pouring barrel according to claim 1, wherein the redirecting transmission mechanism comprises a vertical ejector rod, and at least one of the vertical ejector rod and the lock tongue is provided with a redirecting inclined plane matched with the other.

5. The bridge plug ash pouring barrel of any of claims 1-4, wherein the outer side of the barrel cover is provided with a groove, the lock tongue is positioned in the groove and the front end passes through the groove wall of the groove.

6. The bridge plug ash pouring barrel of any of claims 1-4, wherein the barrel comprises a central body portion, a tail sleeve is detachably connected to the lower end of the body portion, and the barrel cover is arranged on the tail sleeve.

7. The bridge plug ash pouring barrel of claim 6 wherein the tail sleeve is removably connected to the body portion by a threaded engagement.

8. The bridge plug ash pouring barrel according to claim 6, wherein a thickening annular table is arranged at the lower end of the tail sleeve, and the barrel cover is arranged on the thickening annular table.

9. The bridge plug ash pouring barrel according to any of claims 1-4, wherein a lock hole matched with the lock tongue is formed on the barrel body.

10. The bridge plug ash pouring barrel of any of claims 1-4, wherein an upper end of the barrel is detachably connected with an upper joint.