CN209818016U - Double-group sealing mechanical packer - Google Patents
Double-group sealing mechanical packer Download PDFInfo
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- CN209818016U CN209818016U CN201920628322.9U CN201920628322U CN209818016U CN 209818016 U CN209818016 U CN 209818016U CN 201920628322 U CN201920628322 U CN 201920628322U CN 209818016 U CN209818016 U CN 209818016U
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- mandrel
- top anchor
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- setting
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Abstract
The utility model provides a two sealing machine packer. The double-group sealing mechanical packer comprises an upper top anchor; a first mandrel; the setting outer sleeve is abutted against the first mandrel; the second mandrel is connected with the setting outer sleeve in a sliding mode; a lower top anchor fixedly secured to the second mandrel; the limiting structure comprises a retaining ring, the retaining ring is arranged at the opposite end of the upper top anchor and the opposite end of the first mandrel and the opposite end of the setting jacket and the lower top anchor, the retaining ring on the first mandrel is in sliding connection with the first mandrel, and the retaining ring on the second mandrel is in sliding connection with the second mandrel; two sealing structures, the sealing structures comprising a plurality of drive plates and sealing rings; a separating ring. The utility model provides a two sealed mechanical packer of group have with the pipe well side direction contact pressure big, the atress is even, to the high quality advantage of pipe well shutoff.
Description
Technical Field
The utility model relates to an oil gas well machinery packer technical field especially relates to a two sealed mechanical packer of group.
Background
The packer is a downhole tool which is provided with an elastic sealing element and is used for sealing annular spaces between pipe columns and well bores and between the pipe columns in various sizes and isolating a production zone so as to control production (injection) fluid and protect a casing; in the well completion engineering of oil, gas and water wells, in order to realize downhole packing for various purposes, various mechanical or hydraulic setting packers, such as a double-group sealing RTTS packer in the prior art, are used, and the structure diagram is shown in figure 5.
However, the lateral contact pressure between the plugging rubber sleeve and the pipeline of the traditional double-group sealing mechanical packer is small, and further the sealing performance of the pipeline is more difficult to guarantee, for example, secondary sealing is performed on the pipe well through the upper combined sealing sleeve and the lower combined sealing sleeve in the patent with the application number of 2016003090.3, the upper combined sealing sleeve and the lower combined sealing sleeve are both of an annular structure and small in lateral contact pressure with the pipe well, and further the sealing performance of the pipe well can be influenced, the upper combined sealing sleeve and the lower combined sealing sleeve are both provided with a plurality of sealing sleeves, and uneven stress is easily caused.
Therefore, there is a need to provide a new double-sealing mechanical packer to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The technical problem solved by the utility model is to provide a with big, the atress of pipe well side direction contact pressure, to the good two sealed mechanical packer of group of pipe well shutoff quality.
In order to solve the technical problem, the utility model provides a two sealed mechanical packers of group include: anchoring at the upper top; the first mandrel is in sliding connection with the upper top anchor; the setting outer sleeve is abutted against the first mandrel; the second mandrel is connected with the setting outer sleeve in a sliding mode; a lower top anchor fixedly secured to the second mandrel; the limiting structures are arranged at the opposite ends of the upper top anchor and the first mandrel and the opposite ends of the setting sleeve and the lower top anchor respectively and comprise retaining rings, the retaining rings are arranged at the opposite ends of the upper top anchor and the first mandrel and the opposite ends of the setting sleeve and the lower top anchor respectively, the retaining ring on the first mandrel is in sliding connection with the first mandrel, and the retaining ring on the second mandrel is in sliding connection with the second mandrel; the two sealing structures for plugging the pipe well are respectively arranged between the two retaining rings on the first mandrel and between the two retaining rings on the second mandrel, each sealing structure comprises a plurality of driving plates and sealing rings, one part of the driving plates with arc structures is arranged between the two retaining rings on the first mandrel, the other part of the driving plates is arranged between the two retaining rings on the second mandrel, the driving plates are arranged on the sealing rings, and the thickness of the cross sections of the sealing rings is gradually reduced from two ends to the middle; the separating ring is arranged between two adjacent driving plates, the separating ring close to the upper top anchor is in sliding connection with the first mandrel, and the separating ring close to the lower top anchor is in sliding connection with the second mandrel.
Preferably, the diameter of the end of the upper top anchor facing away from the first mandrel is smaller than the diameter of the end of the upper top anchor close to the first mandrel, and the minimum diameter of the upper top anchor is larger than the diameter of the first mandrel.
Preferably, the limit structure further comprises a plurality of positioning rods, the positioning rods on the baffle ring of the annular structure are circumferentially arranged in an array manner, the positioning rods on the baffle ring close to the top anchor are clamped with the top anchor, the positioning rods on the baffle ring close to the first mandrel are clamped with the first mandrel, and the positioning rods on the baffle ring close to the setting jacket are clamped with the setting jacket; the positioning rod on the baffle ring close to the lower top anchor is clamped with the lower top anchor.
Preferably, the cross section of each positioning rod is of a regular hexagon structure, and the number of the positioning rods is at least four.
Preferably, the sealing structure further comprises a plurality of limiting rods, the limiting rods with a plurality of cylindrical structures are arranged at two ends of the baffle ring in a symmetrical circumferential array mode, and the limiting rods are clamped with the separating ring or the baffle ring.
Preferably, one end of the setting outer sleeve, which is close to the first mandrel, is of a circular truncated cone-shaped structure.
Compared with the prior art, the utility model provides a two sealed mechanical packer of group have following beneficial effect:
the utility model provides a double-group sealing mechanical packer, a plurality of sealing structures are arranged between two baffle rings at the opposite ends of an upper top anchoring sleeve and a lower top anchoring sleeve, a plurality of sealing structures are arranged between two baffle rings between the upper top anchoring sleeve and the lower top anchoring sleeve, a separation ring is arranged between two adjacent sealing structures, a driving plate with an arc structure is abutted against the baffle rings and the separation ring or is abutted against the two separation rings, and then the baffle rings are abutted against the driving plate through the upper top anchoring sleeve, the first mandrel slides between the upper top anchoring sleeve and the second mandrel, so that the driving plate is stressed more uniformly, the driving plate is driven by extrusion deformation to seal a pipe well, the arrangement of the driving plate further increases the lateral pressure of the sealing ring to the pipe well, and then improved the shutoff performance greatly, the thickness of sealing washer reduces from the centre to both ends gradually, and then has increased the area of contact of sealing washer and tube well, and then has improved the seat ability of sealing to the tube well.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of a double-seal mechanical packer provided by the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view of a connection structure between the limiting structure and the sealing structure shown in FIG. 2;
FIG. 4 is an enlarged view of the portion B shown in FIG. 3;
FIG. 5 is a schematic diagram of a double set seal RTTS packer of the prior art.
Reference numbers in the figures: 1. the device comprises an upper top anchor, 2, a limiting structure, 21, a positioning rod, 22, a baffle ring, 3, a first mandrel, 4, a setting jacket, 5, a lower top anchor, 6, a sealing structure, 61, a driving plate, 62, a sealing ring, 63, a limiting rod, 7, a separating ring, 8 and a second mandrel.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
Please refer to fig. 1, fig. 2, fig. 3 and fig. 4 in combination, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of a double-sealing mechanical packer provided by the present invention; FIG. 2 is an enlarged view of portion A of FIG. 1; FIG. 3 is a schematic view of a connection structure between the limiting structure and the sealing structure shown in FIG. 2; fig. 4 is an enlarged view of the portion B shown in fig. 3. The double-group sealing mechanical packer comprises: the upper top anchor 1; a first mandrel 3, the first mandrel 3 being in sliding connection with the upper roof anchor 1; the setting outer sleeve 4 is abutted against the first mandrel 3; the second mandrel 8 is connected with the setting outer sleeve 4 in a sliding mode; a lower top anchor 5, said lower top anchor 5 being fixed to said second mandrel 8; the limiting structure 2 is arranged at the opposite ends of the upper top anchor 1 and the first mandrel 3 and the setting jacket 4 and the lower top anchor 5, the limiting structure 2 comprises a baffle ring 22, the baffle ring 22 is arranged at the opposite ends of the upper top anchor 1 and the first mandrel 3 and the opposite ends of the setting jacket 4 and the lower top anchor 5, the baffle ring 22 is arranged at the opposite ends of the upper top anchor 1 and the first mandrel 3, the baffle ring 22 on the first mandrel 3 is in sliding connection with the first mandrel 3, and the baffle ring 22 on the second mandrel 8 is in sliding connection with the second mandrel 8; two sealing structures 6, two sealing structures 6 for plugging a tubular well are respectively arranged between two retaining rings 22 on the first mandrel 3 and between two retaining rings 22 on the second mandrel 8, each sealing structure 6 comprises a plurality of driving plates 61 and sealing rings 62, one part of the driving plates 61 with arc structures is arranged between the two retaining rings 22 on the first mandrel 3, the other part of the driving plates 61 is arranged between the two retaining rings 22 on the second mandrel 8, the driving plates 61 are arranged on the sealing rings 62, and the thickness of the cross sections of the sealing rings 62 is gradually reduced from two ends to the middle; and the separating ring 7 is arranged between two adjacent driving plates 61, the separating ring 7 close to the upper top anchor 1 is in sliding connection with the first mandrel 3, and the separating ring 7 close to the lower top anchor 5 is in sliding connection with the second mandrel 8.
The diameter of the end of the upper top anchor 1, which is far away from the first mandrel 3, is smaller than the diameter of the end of the upper top anchor 1, which is close to the first mandrel 3, and the minimum diameter of the upper top anchor 1 is larger than the diameter of the first mandrel 3; in order to make the structure more reasonable, it is more convenient to use.
The limiting structure 2 further comprises a plurality of positioning rods 21, a plurality of positioning rods 21 are circumferentially arranged on the baffle ring 22 of the annular structure in an array manner, the positioning rods 21 on the baffle ring 22 close to the top anchor 1 are clamped with the top anchor 1, the positioning rods 21 on the baffle ring 22 close to the first mandrel 3 are clamped with the first mandrel 3, and the positioning rods 21 on the baffle ring 22 close to the setting jacket 4 are clamped with the setting jacket 4; the positioning rod 21 on the baffle ring 22 close to the lower top anchor 5 is clamped with the lower top anchor 5; the retaining ring 22 is provided with the positioning rod 21, so that the retaining ring 22 is more stably fixed.
The cross section of each positioning rod 21 is of a regular hexagon structure, and the number of the positioning rods 21 is at least four; in order to make the use of the baffle ring 22 more stable.
The sealing structure 6 further comprises a plurality of limiting rods 63, a plurality of cylindrical limiting rods 63 are symmetrically arranged at two ends of the baffle ring 22 in a circumferential array, and the limiting rods 63 are clamped with the separating ring 7 or the baffle ring 22; the driving plate 61 is provided with a plurality of limiting rods 63, the limiting rods 63 are arranged to limit the driving plate 61, so that the driving plate 61 is effectively prevented from rotating, and the stress of the driving plate 61 is more uniform.
One end of the setting jacket 4 close to the first mandrel 3 is of a circular truncated cone-shaped structure; sit and seal overcoat 4 and be close to the one end of first dabber 3 is round platform shape structure, and then has increased first dabber 3 with sit the area of contact between the overcoat 4, make it is more even to sit the overcoat 4 atress, makes simultaneously the drive plate 61 atress is more even.
FIG. 5 is a schematic diagram of a two-pack seal RTTS packer of the prior art; the assembly of the double-group sealing RTTS packer in the prior art comprises the following steps:
the method comprises the following steps: and (3) a friction block spring is arranged in a friction block outer cylinder spring groove, the friction block is placed and then flattened by a vice, the other end of the friction block is pressed by a pressing plate, and a screw is screwed in and tightened. Sequentially mounting all friction blocks;
step two: sleeving a lower mandrel from the right end of the outer cylinder of the friction block, and sleeving a lug of the mandrel along an inner hole transposition groove of the outer cylinder of the friction block;
step three: and connecting and screwing the upper mandrel and the lower mandrel. And (3) the slip sliding sleeve is sleeved from the left end of the upper mandrel, and the slip stop pin is screwed into the screw hole in the slip groove of the slip sliding sleeve and is screwed tightly. Slips are slid in from the slip sleeve left end in the direction shown. After all the slips are in place, sleeving the opening hoop on the tail parts of the slips, and fastening by using screws;
step four: sequentially sleeving the sole shoes, the rubber cylinder, the spacer ring and the rubber cylinder on the upper mandrel;
step five: sleeving the connecting outer cylinder into the left end of the upper mandrel, and connecting and screwing the connecting outer cylinder in a threaded manner;
step six: sleeving a rubber cylinder mandrel from the right end of the spline outer cylinder, aligning the spline grooves, and then connecting and screwing the assembled spline outer cylinder and the connecting outer cylinder in a threaded manner;
step seven: sequentially sleeving the rubber cylinder, the spacer ring, the rubber cylinder and the top shoe from the left end of the rubber cylinder mandrel, and screwing down the threads of the top shoe;
step eight: the volume tube penetrates from the left end of the rubber cylinder mandrel, and the sealing end of the volume tube is ensured to enter the inner hole sealing section of the upper mandrel;
step nine: the hydraulic anchor tile is arranged in the hydraulic anchor body, and the pressing plate is fixed by a screw after the spring is arranged;
step ten: and connecting and screwing the assembled hydraulic anchor and the rubber cylinder mandrel in a threaded manner.
The utility model provides a two groups seal mechanical packer's theory of operation as follows:
firstly, fixing the lower top anchor 5 in the tubular well, pressing the upper top anchor 1 through a driving device, wherein the baffle ring 22 on the upper top anchor 1 abuts against the driving plate 61, and simultaneously, two adjacent driving plates 61 are driven by the separating ring 7, so that the driving plate 61 abuts against the baffle ring 22 on the first mandrel 3, the first mandrel 3 abuts against the setting jacket 4, the baffle ring 22 on the setting jacket 4 abuts against the driving ring, the baffle ring on the lower top anchor 5 abuts against the driving plate 61, so that the driving plate 61 is extruded and deformed, the sealing ring 62 with an arc-shaped section is driven by the driving plate 61 to plug the tubular well, a plurality of sealing structures 6 are arranged between the upper top anchor 1 and the two baffle rings 22 at the opposite ends of the setting jacket 4, and a plurality of baffle rings 22 are arranged between the setting jacket 4 and the lower top anchor 5 In the sealing structures 6, the separating ring 7 is arranged between two adjacent sealing structures 6, the driving plate 61 with an arc structure is abutted against the baffle ring 22 and the separating ring 7, or abutted against the two separating rings 7, so that the upper top anchor 1 drives the baffle ring 22 to abut against the driving plate 61, the first mandrel 3 is slid between the upper top anchor 1 and the second mandrel 8 is slid between the seat jacket 4, so that the driving plate 61 is stressed more uniformly, the driving plate 61 is extruded and deformed to drive the sealing ring 62 to seal the tubular well, the driving plate 61 is arranged to increase the lateral pressure of the sealing ring 62 to the tubular well, so that the plugging performance is greatly improved, the thickness of the sealing ring 62 is gradually reduced from the middle to the two ends, so that the contact area between the sealing ring 62 and the tubular well is increased, the setting capability of the tubular well is further improved, one end, close to the first mandrel 3, of the setting jacket 4 is of a round table structure, the contact area between the first mandrel 3 and the setting jacket 4 is further increased, the stress of the setting jacket 4 is more uniform, and meanwhile, the stress of the driving plate 61 is more uniform; be equipped with a plurality ofly on the drive plate 61 the gag lever post 63, the setting of gag lever post 63 is convenient for right the drive plate 61 carries on spacingly, and then effectual prevention the drive plate 61 rotates, and then makes the drive plate 61 atress is more even, be equipped with on the fender ring 22 the locating lever 21, and then make it is fixed more firm to keep off ring 22.
Compared with the prior art, the utility model provides a two sealed mechanical packer of group have following beneficial effect:
the utility model provides a double-group sealing mechanical packer, a plurality of sealing structures 6 are arranged between two baffle rings 22 at the opposite ends of an upper top anchoring sleeve 1 and a setting sleeve 4, a plurality of sealing structures 6 are arranged between two baffle rings 22 between the setting sleeve 4 and a lower top anchoring sleeve 5, a separation ring 7 is arranged between two adjacent sealing structures 6, a driving plate 61 with an arc structure is abutted against the baffle rings 22 and the separation ring 7 or the two separation rings 7, so that the baffle rings 22 are abutted against the driving plate 61 through the upper top anchoring sleeve 1, the first mandrel 3 is slid between the upper top anchoring sleeve 1, the second mandrel 8 is slid between the setting sleeve 4, so that the stress of the driving plate 61 is more uniform, the driving plate 61 is extruded and deformed to drive a sealing ring 62 to seal a pipe well, the setting of drive plate 61 has then increased the lateral pressure of sealing washer 62 to the tubular well, and then has improved the shutoff performance greatly, the thickness of sealing washer 62 reduces from the centre to both ends gradually, and then has increased the area of contact of sealing washer 62 with the tubular well, and then has improved the seat ability to the tubular well.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (6)
1. A double-pack mechanical seal packer comprising:
anchoring at the upper top;
the first mandrel is in sliding connection with the upper top anchor;
the setting outer sleeve is abutted against the first mandrel;
the second mandrel is connected with the setting outer sleeve in a sliding mode;
a lower top anchor fixedly secured to the second mandrel;
the limiting structures are arranged at the opposite ends of the upper top anchor and the first mandrel and the opposite ends of the setting sleeve and the lower top anchor respectively and comprise retaining rings, the retaining rings are arranged at the opposite ends of the upper top anchor and the first mandrel and the opposite ends of the setting sleeve and the lower top anchor respectively, the retaining ring on the first mandrel is in sliding connection with the first mandrel, and the retaining ring on the second mandrel is in sliding connection with the second mandrel;
the two sealing structures for plugging the pipe well are respectively arranged between the two retaining rings on the first mandrel and between the two retaining rings on the second mandrel, each sealing structure comprises a plurality of driving plates and sealing rings, one part of the driving plates with arc structures is arranged between the two retaining rings on the first mandrel, the other part of the driving plates is arranged between the two retaining rings on the second mandrel, the driving plates are arranged on the sealing rings, and the thickness of the cross sections of the sealing rings is gradually reduced from two ends to the middle;
the separating ring is arranged between two adjacent driving plates, the separating ring close to the upper top anchor is in sliding connection with the first mandrel, and the separating ring close to the lower top anchor is in sliding connection with the second mandrel.
2. The double set mechanical seal packer of claim 1 wherein the diameter of the top anchor at the end facing away from the first mandrel is smaller than the diameter of the top anchor at the end near the first mandrel and the minimum diameter of the top anchor is larger than the diameter of the first mandrel.
3. The double-group mechanical seal packer of claim 2, wherein the limit structure further comprises a plurality of positioning rods, the positioning rods are circumferentially arrayed on the baffle ring of the annular structure, the positioning rods on the baffle ring near the top anchor are clamped with the top anchor, the positioning rods on the baffle ring near the first mandrel are clamped with the first mandrel, and the positioning rods on the baffle ring near the setting jacket are clamped with the setting jacket; the positioning rod on the baffle ring close to the lower top anchor is clamped with the lower top anchor.
4. The double mechanical seal packer of claim 3, wherein the cross section of the positioning rod is a regular hexagon structure, and the number of the positioning rods is at least four.
5. The double-group mechanical seal packer of claim 3, wherein the seal structure further comprises a plurality of limiting rods, a plurality of cylindrical limiting rods are arranged at two ends of the baffle ring in a symmetrical circumferential array, and the limiting rods are clamped with the separating ring or the baffle ring.
6. The double mechanical seal packer of claim 1 wherein the setting jacket has a frustoconical configuration at an end proximate the first mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920628322.9U CN209818016U (en) | 2019-05-05 | 2019-05-05 | Double-group sealing mechanical packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920628322.9U CN209818016U (en) | 2019-05-05 | 2019-05-05 | Double-group sealing mechanical packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209818016U true CN209818016U (en) | 2019-12-20 |
Family
ID=68882457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920628322.9U Active CN209818016U (en) | 2019-05-05 | 2019-05-05 | Double-group sealing mechanical packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209818016U (en) |
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2019
- 2019-05-05 CN CN201920628322.9U patent/CN209818016U/en active Active
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