CN211314160U

CN211314160U - Packer (CN)

Info

Publication number: CN211314160U
Application number: CN202020036564.1U
Authority: CN
Inventors: 杨策
Original assignee: Da'an Wanda Petroleum Machinery New Technology Co ltd
Current assignee: Da'an Wanda Petroleum Machinery New Technology Co ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-08-21
Anticipated expiration: 2030-01-08

Abstract

The utility model relates to a packer, including top connection, center tube, right body, card tooth, spring, right the piece, trade the rail guide ring, right body end cover, cone locking cap. The center tube outside has the helicla flute, and long sliding sleeve cup joints in the center tube outside, and lower packing element cup joints in long sliding sleeve outside, and is located cone locking cap top, and short sliding sleeve cup joints in the center tube outside, has cup jointed the well packing element in the outside of this short sliding sleeve, and the spacer sleeve cup joints in the center tube outside and is located between well packing element and the long sliding sleeve, and the packing element cup joints in the center tube outside, and is located short sliding sleeve top, and the pressure cover cup joints in the center tube outside, and is located between top connection and the packing element. The advantage is novel structure, adds the sliding sleeve between center tube and packing element, makes the compressive force of packing element act on the sleeve pipe, reaches the purpose of smooth deblocking, puts the spiral groove into car with the center tube entire body, coats a layer of high-quality butter at the groove primary coat, and the center tube just can not be at the scale deposit like this, and the purpose of scale control has just been reached.

Description

Packer (CN)

Technical Field

The utility model relates to an oil field oil recovery well downhole tool especially is to the improvement of packer.

Background

At present, a lot of mixtures exist in an oil well, a packer central pipe cannot be lifted and is difficult to unseal after being scaled, and although chromium plating is carried out on the packer central pipe or the central pipe is made of stainless steel, scaling still occurs, so that the common packer for the oil well in the oil field has the problem of difficult unsealing; the direct cover of conventional packer packing element is in the center tube, and the packing element resilience difficulty behind the center tube scale deposit, the power of packing element is used in center tube and sleeve pipe, and the difficult deblocking of packing element just appears the problem of deblocking difficulty, card well when lifting.

Disclosure of Invention

The utility model provides a packer to solve the center tube scale deposit back packing element resilience difficulty that exists at present, the problem of deblocking difficulty, stuck well appears.

The utility model adopts the technical proposal that: the upper connector is in threaded connection with the upper part of the central tube, the centralizing body is sleeved outside the central tube, the clamping teeth are arranged above the centralizing body, the first spring and the second spring are respectively arranged in the clamping teeth, the centralizing block provided with the spring piece is arranged in the centralizing body, the rail changing guide ring is sleeved outside the central tube and positioned below the centralizing body, the rail changing guide nail is arranged in a groove of the rail changing guide ring and is in sliding connection with a slideway on the central tube, the centralizing body end cover is in threaded connection with the lower part of the centralizing body, the cone is sleeved outside the central tube, the lower part of the cone locking cap is in threaded connection with the cone, the upper part of the cone locking cap is clamped with the central tube, the long sliding sleeve is sleeved outside the central tube, the lower rubber sleeve is sleeved outside the long sliding sleeve and positioned above the cone locking cap, the short sliding sleeve is sleeved outside the central tube, the middle rubber barrel is sleeved outside the short sliding sleeve, the spacer sleeve is, the upper gluing barrel is sleeved outside the central tube and positioned above the short sliding sleeve, and the pressing sleeve is sleeved outside the central tube and positioned between the upper joint and the upper gluing barrel.

The middle rubber barrel comprises two rubber barrels I and a first isolating pad, wherein the first isolating pad is positioned between the two rubber barrels I.

The lower rubber barrel comprises a second three rubber barrel and two second spacers, wherein the two second spacers are respectively positioned between every two of the second three rubber barrel.

The utility model has the advantages that the structure is novel, the sliding sleeve is added between the central tube and the rubber tube, so that the compression force of the rubber tube acts on the sleeve, the rubber tube is not forced by the central tube when lifted, the sliding sleeve freely moves upwards for a certain distance, the rubber tube freely retracts through the distance, and the frictional resistance of the sliding sleeve sleeved on the central tube is greatly reduced compared with that when the rubber tube directly moves on the central tube, so that the purpose of smooth deblocking can be achieved by the packer; the whole body of the central tube is turned into a spiral groove, and a layer of high-quality grease is coated on the bottom coating of the groove, so that the central tube cannot be scaled, and the purpose of scale prevention is achieved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

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

FIG. 3 is a schematic structural view of the center tube of the present invention;

fig. 4 is a schematic structural view of the centralizing body of the invention;

fig. 5 is a cross-sectional view of the centralizing body of the present invention;

FIG. 6 is a schematic structural view of the short sliding sleeve of the present invention;

FIG. 7 is a schematic structural view of the long sliding sleeve of the present invention;

FIG. 8 is a structural view of the upper part of the present invention;

fig. 9 is a structural diagram of the lower half of the present invention.

Detailed Description

The upper connector 1 is in threaded connection with the upper part of a central tube 18, a centralizing body 19 is sleeved outside the central tube 18, a clamping tooth 10 is arranged above the centralizing body 19, a spring I11 and a spring II 12 are respectively arranged in the clamping tooth 10, a centralizing block 14 provided with a spring piece 13 is arranged inside the centralizing body 19, a rail changing guide ring 15 is sleeved outside the central tube 18 and is positioned below the centralizing body, a rail changing guide nail 16 is arranged in a groove of the rail changing guide ring 15 and is in sliding connection with a slideway on the central tube 18, a centralizing body end cover 17 is in threaded connection with the lower part of the centralizing body 19, a cone 9 is sleeved outside the central tube 18, the lower part of a cone locking cap 8 is in threaded connection with the cone 9, the upper part of the cone locking cap is clamped with the central tube 18, a spiral groove is arranged outside the central tube 18, a long sliding sleeve 7 is sleeved outside the central tube 18, a lower rubber barrel 20 is sleeved outside the long sliding sleeve, the middle glue barrel 5 is sleeved outside the short sliding sleeve 4, the spacer bush 6 is sleeved outside the central tube and located between the middle glue barrel 5 and the long sliding sleeve 7, the upper glue barrel 3 is sleeved outside the central tube 18 and located above the short sliding sleeve 4, and the pressing sleeve 2 is sleeved outside the central tube 18 and located between the upper joint 1 and the upper glue barrel 3.

The middle rubber barrel 5 comprises two rubber barrels I501 and a first isolating pad 502, wherein the first isolating pad 502 is positioned between the two rubber barrels I501.

The lower rubber barrel 20 comprises three second rubber barrels 2001 and two second spacers 2002, wherein the two second spacers 2002 are respectively positioned between every two of the three second rubber barrels 2001.

The working principle is as follows:

the utility model discloses a setting and deblocking are the same with prior art, now explain as follows: when the packer is lowered to a preset position in a casing during downhole, the track-changing guide nail 16 is guided into a long slide way on the central tube due to the fact that the front end of the end cover 17 of the centralizing body is blocked, the central tube continues to move downwards, and the cone 9 expands the clamping teeth 10 and clamps the clamping teeth on the inner wall of the casing; the central tube continues to move downwards to drive the long sliding sleeve 7, the spacer bush 6 and the short sliding sleeve 4 to follow the downward movement, and the rubber cylinder is compressed to seal the inner wall of the sleeve so as to complete the setting function. When deblocking is carried out, the central tube moves upwards to drive the long sliding sleeve 7, the short sliding sleeve 4 and the spacer bush 6 to move upwards, and each rubber cylinder returns to the designed position under the elastic acting force; the central tube 18 with the spiral groove continues to go upwards, the clamping teeth 10 on the righting body 19 are separated from the cone 9, and the deblocking is completely finished; wherein:

a spiral groove is formed in the whole outer wall of the central tube, high-quality butter is coated on the spiral groove to prevent scaling, and the central tube is not scaled because the high-quality butter is not melted and is stuck on the central tube at the temperature of 80-90 ℃; the rubber barrel is sleeved on the long sliding sleeve and the short sliding sleeve and then sleeved on the central tube, and the rubber barrel is sleeved on the central tube directly and easily unsealed compared with the rubber barrel, and the friction resistance of the long sliding sleeve and the short sliding sleeve during movement on the central tube directly and directly compared with the rubber barrel is greatly reduced.

Claims

1. The utility model provides a packer, the top threaded connection of top connection and center tube, it cup joints the outside at the center tube to right the body, the card tooth is packed into and is right body top, spring one and spring two are packed into respectively in the card tooth, the body is right to the piece of rightting that will be equipped with the spring leaf is packed into inside, trade the rail guide ring and cup joint outside the center tube, and be located and right body below, trade the rail guide nail and install in the groove of trading the rail guide ring, and with slide sliding connection on the center tube, right body end cover and right body lower part threaded connection, the cone cover is in the outside of center tube, cone locking cap lower part and cone threaded connection, upper portion and center tube joint, its characterized in that: the center tube outside has the helicla flute, and long sliding sleeve cup joints in the center tube outside, and lower packing element cup joints in long sliding sleeve outside, and is located cone locking cap top, and short sliding sleeve cup joints in the center tube outside, has cup jointed the well packing element in the outside of this short sliding sleeve, and the spacer sleeve cup joints in the center tube outside and is located between well packing element and the long sliding sleeve, and the packing element cup joints in the center tube outside, and is located short sliding sleeve top, and the pressure cover cup joints in the center tube outside, and is located between top connection and the packing element.

2. A packer as claimed in claim 1, wherein: the middle rubber barrel comprises two rubber barrels I and a first isolating pad, wherein the first isolating pad is positioned between the two rubber barrels I.

3. A packer as claimed in claim 1, wherein: the lower rubber barrel comprises a second three rubber barrel and two second spacers, wherein the two second spacers are respectively positioned between every two of the second three rubber barrel.