CN201103374Y

CN201103374Y - Plugged tube sealing device

Info

Publication number: CN201103374Y
Application number: CNU200720201128XU
Authority: CN
Inventors: 骆向杰; 谢斌; 杨新克
Original assignee: XINJIANG PETROLEUM ADMINISTRATION OIL-PRODUCTION TECHNOLOGY INST
Current assignee: XINJIANG PETROLEUM ADMINISTRATION OIL-PRODUCTION TECHNOLOGY INST
Priority date: 2007-10-09
Filing date: 2007-10-09
Publication date: 2008-08-20
Anticipated expiration: 2017-10-09

Abstract

The utility model relates to a device in cooperation with an inserting tube packer or an inserting tube bridge plug for sealing and pressure bearing operation, being an inserting tube sealing device. The inserting tube sealing device includes a central tube and an inserting tube. The inserting tube can move upward and downward in the central tube. The utility model also comprises a stopper ring, an upper steel body, a lower steel body and a sealing rubber ring; the stopper ring, the upper steel body, the sealing rubber ring and the lower steel body are arranged at the inner side of the central tube in sequence. The external side of the stopper ring is connected with the internal side of the central tube. The bottom of the stopper ring is fixedly connected with the top of the upper steel body. The sealing rubber ring is sheathed between the upper steel body and the lower steel body. The upper steel body, the sealing rubber ring and the lower steel body are arranged in the central tube. The external wall of the inserting tube can hermetically contact the internal side of the sealing rubber ring. The inserting tube sealing device has reasonable and compact structure, convenient use and good sealing performance, and can reduce the times of the replacement of the sealing ring on the central tube, lower hidden production safety troubles and enhance working efficiency.

Description

Intubation seal device

One, technical field

The utility model relates to the device that cooperates intubate packer or intubate bridging plug to carry out the seal and pressure bearing operation, is a kind of intubation seal device.

Two, background technology

Intubate packer, intubate bridging plug have important function as a kind of kit of oilfield downhole operation in field produces.Intubate packer commonly used, intubate bridging plug are when cooperating intubate to carry out the seal and pressure bearing operation, mostly directly adopt embedded in the central tube " O " type circle to seal, " O " type circle by extruding " O " type circle, obtains good sealing effectiveness in the first insertion process of intubate.But when intubate was extracted, under the impact of friction and fluid, " O " type circle was gone out caulking groove easily, and when intubate was inserted once more, " O " type circle had lost envelope, thereby had limited carrying out smoothly of follow-up underground work.

Three, summary of the invention

The utility model provides a kind of intubation seal device, has overcome the deficiency of above-mentioned prior art, the pressure bearing and seal problem of the tool combinations that intubate and packer or bridging plug constitute in the time of solving workover treatment effectively in plug twitch process repeatedly.

The technical solution of the utility model realizes by following measure: a kind of intubation seal device, comprise central tube and intubate, and intubate can move up and down in central tube, and also comprise baffle ring, last steel body, following steel body and sealed rubber ring; The central tube inboard have successively from top to bottom baffle ring, on steel body, sealed rubber ring and following steel body, the outside of baffle ring and the inboard of central tube link together, the top of the bottom of baffle ring and last steel body is fixed together, be set with sealed rubber ring between last steel body and the following steel body, last steel body, sealed rubber ring and following steel body are sleeved in the central tube, and the outer wall energy of intubate contacts with the inner seal of sealed rubber ring.

Be further optimization and/or improvements below to above-mentioned technical solutions of the utility model:

Above-mentioned going up on steel body or the following pairing central tube inwall of steel body can be equipped with the O RunddichtringO.

The outside of above-mentioned baffle ring and the inboard of central tube can be by being threaded togather.

Above-mentioned sealed rubber ring can comprise boss and platform, and boss is sleeved in the central tube, and the top of boss withstands on the bottom of steel body, and the bottom of boss withstands on down the top of steel body, and platform is sleeved on steel body and the following steel body.

But above-mentioned upward steel body, sealed rubber ring and following steel body one.

The utility model reasonable and compact in structure, easy to use, good seal performance has reduced the replacing number of times of sealing ring on the central tube, has reduced production safety hidden danger, has improved operating efficiency.

Four, description of drawings

Accompanying drawing 1 is looked the sectional structure schematic diagram for the master of the utility model most preferred embodiment;

Coding in the accompanying drawing is respectively: 1 is central tube, and 2 is the O RunddichtringO, and 3 is sealed rubber ring, and 4 is baffle ring, and 5 is last steel body, and 6 is intubate, and 7 are following steel body, and 8 is boss, and 9 is platform.

Five, the specific embodiment

The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.

Below in conjunction with most preferred embodiment and accompanying drawing the utility model is further described:

As shown in Figure 1, this intubation seal device comprises central tube 1 and intubate 6, and intubate 6 can move up and down in central tube 1, also comprises baffle ring 4, last steel body 5, following steel body 7 and sealed rubber ring 3; Central tube 1 inboard have successively from top to bottom baffle ring 4, on steel body 5, sealed rubber ring 3 and following steel body 7, the inboard of the outside of baffle ring 4 and central tube 1 links together, the top of the bottom of baffle ring 4 and last steel body 5 is fixed together, be set with sealed rubber ring 3 between last steel body 5 and the following steel body 7, last steel body 5, sealed rubber ring 3 and following steel body 7 are sleeved in the central tube 1, and the outer wall energy of intubate 6 contacts with the inner seal of sealed rubber ring 3.

Can according to actual needs above-mentioned intubation seal device be made further optimization and/or improvements:

As shown in Figure 1, on last steel body 5 or following steel body 7 pairing central tube 1 inwalls O RunddichtringO is installed, also can on last steel body 5 and following steel body 7 pairing central tube 1 inwalls, the O RunddichtringO be installed simultaneously.Like this, just form double sealing structure, increased sealing performance.

As shown in Figure 1, for the ease of installing, the inboard of the outside of baffle ring 4 and central tube 1 is by being threaded togather.

As shown in Figure 1, sealed rubber ring 3 comprises boss 8 and platform 9, and boss 8 is sleeved in the central tube 1, and the top of boss 8 withstands on the bottom of steel body 5, and the bottom of boss 8 withstands on down the top of steel body 7, and platform 9 is sleeved on steel body 5 and the following steel body 7.

As shown in Figure 1, can will go up steel body 5, sealed rubber ring 3 and following steel body 7 fixed by sulfuration process be one, and sealing effectiveness can be better like this.

The course of work of most preferred embodiment of the present utility model: at first, baffle ring 4 and central tube 1 are gone up steel body 5, sealed rubber ring 3 and following steel body 7 and are taken out of by being threaded in the time of can preventing plug pipe 6 like this.Intubate 6 has a certain amount of interference with sealed rubber ring 3, plays the effect of sealing just, and central tube 1 embedded O RunddichtringO 2 also plays the effect of sealing; During work, under the effect of pressure reduction up and down, the power that acts on down on steel body 7 end faces will compression seal glue ring 3, makes sealed rubber ring 3 fill the intubate gap more fully, realizes sealing.Big more to act under the seal power on steel body 7 end faces also big more for pressure reduction up and down, and sealing effectiveness is also good more.When intubate is extracted, last pressure balance, sealed rubber ring 3 restores to the original state.The utility model can be realized the plug repeatedly of intubate, and under high and low pressure reduction situation, the utility model all can guarantee excellent sealing performance.

Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.

Claims

1. an intubation seal device comprise central tube and intubate, and intubate can move up and down in central tube, it is characterized in that comprising baffle ring, last steel body, following steel body and sealed rubber ring; The central tube inboard have successively from top to bottom baffle ring, on steel body, sealed rubber ring and following steel body, the outside of baffle ring and the inboard of central tube link together, the top of the bottom of baffle ring and last steel body is fixed together, be set with sealed rubber ring between last steel body and the following steel body, last steel body, sealed rubber ring and following steel body are sleeved in the central tube, and the outer wall energy of intubate contacts with the inner seal of sealed rubber ring.

2. intubation seal device according to claim 1 is characterized in that the steel body or on the pairing central tube inwall of steel body the O RunddichtringO is installed down.

3. intubation seal device according to claim 1 is characterized in that on steel body and the pairing central tube inwall of following steel body the O RunddichtringO being installed.

4. according to claim 1 or 2 or 3 described intubation seal devices, the inboard that it is characterized in that the outside of baffle ring and central tube is by being threaded togather.

5. according to claim 1 or 2 or 3 described intubation seal devices, it is characterized in that sealed rubber ring comprises boss and platform, boss is sleeved in the central tube, and the top of boss withstands on the bottom of steel body, the bottom of boss withstands on down the top of steel body, and platform is sleeved on steel body and the following steel body.

6. intubation seal device according to claim 4, it is characterized in that sealed rubber ring comprises boss and platform, boss is sleeved in the central tube, and the top of boss withstands on the bottom of steel body, the bottom of boss withstands on down the top of steel body, and platform is sleeved on steel body and the following steel body.

7. according to claim 1 or 2 or 3 described intubation seal devices, it is characterized in that steel body, sealed rubber ring and following steel body are one.

8. want 4 described intubation seal devices according to right, it is characterized in that steel body, sealed rubber ring and following steel body are one.