CN103670326B - Open hole packer - Google Patents
Open hole packer Download PDFInfo
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- CN103670326B CN103670326B CN201310752629.7A CN201310752629A CN103670326B CN 103670326 B CN103670326 B CN 103670326B CN 201310752629 A CN201310752629 A CN 201310752629A CN 103670326 B CN103670326 B CN 103670326B
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Abstract
The invention discloses a kind of open hole packer, comprise the mandrel with axially extending bore, one end of mandrel connects the first joint, the other end connects the second joint, and mandrel is socketed left shearing ring, spacing ring, the first auxiliary packing element pressure ring, the first auxiliary packing element, the first spacer ring, main packing element, the second spacer ring, the second auxiliary packing element, the second auxiliary packing element pressure ring, right shearing ring, piston and locating snap ring successively from the first joint; Mandrel have first pressure transmission hole corresponding with left shearing ring and the first slips; Support ring is provided with between main packing element and mandrel; The outside cover of piston has urceolus, and one end of urceolus is connected with the second joint, and the other end is connected with shearing ring, and mandrel is provided with second slips corresponding with piston; Mandrel also has the second pressure transmission hole, and the second pressure transmission hole is between locating snap ring and piston.In the present invention, packing element bearing capacity is strong.
Description
Technical field
The present invention relates to a kind of open hole packer, belong to the downhole tool technical field of oil, Wellbore of Gas Wells operation.
Background technology
The straight well of oil gas field or the barefoot completion segmentation transformation of horizontal well adopt open hole packer to carry out sectional well completion and transformation, modification measures targetedly can be taked to each payzone, or increase acid strength or increase sand fracturing scale, thus really realize each payzone Duan Jun and reach efficient solution except nearly well blocking, the object linking up reservoir.Open hole packer is one of important tool in barefoot completion segmentation reforming technology, serves the key effect of packing bore hole Reservoir Section, and in the face of down-hole complex environment, the packing element performance of open hole packer is that determine can one of the key factor of effective packing.The packing element of prior art packer does not normally have safeguard measure, after down-hole is setting may because construction time tubing string upper and lower play packing element is damaged, cause bearing capacity greatly to reduce, even can seal failure, effectively can not carry out packing to reservoir.
In view of above-mentioned existing packer in use Problems existing and defect, the present inventor relies on working experience for many years and abundant professional knowledge actively in addition research and innovation, finally have developed a kind of open hole packer, to solve prior art Problems existing and defect.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of open hole packer, packing rubber sleeve bearing capacity is strong.
In order to solve the problems of the technologies described above, present invention employs following technical scheme:
Open hole packer, comprise the mandrel with axially extending bore, one end of mandrel connects the first joint, the other end connects the second joint, and mandrel is socketed left shearing ring, spacing ring, the first auxiliary packing element pressure ring, the first auxiliary packing element, the first spacer ring, main packing element, the second spacer ring, the second auxiliary packing element, the second auxiliary packing element pressure ring, right shearing ring, piston and locating snap ring successively from the first joint to the second joint, wherein one end of left shearing ring is between the first joint and mandrel, and be slidably connected with the first joint and stem seal, left shearing ring is connected by the first shear pin with the first joint, left shearing ring and the first joint and mandrel form the first pressure transmission room jointly, mandrel have the first pressure transmission hole of connection first pressure transmission room and mandrel inside, the inner surface of left shearing ring has dentation slip insert, mandrel has the first slip groove, is provided with the first slips in the first slip groove, described first slips has the retaining slips tooth matched with the slips tooth on left shearing ring, be provided with support ring between main packing element and mandrel, support ring is positioned at the middle part of main packing element, in the outside of piston, cover has urceolus, one end of urceolus is connected with the second joint sealing, the other end of urceolus is connected by the second shear pin with right shearing ring, piston is connected with slipper seal between mandrel and urceolus, the inwall of piston has dentation slip insert, mandrel has the second slip groove, be provided with the second slips in the second slip groove, described second slips has the retaining slips tooth matched with the slips tooth on piston, described mandrel also has the second pressure transmission hole, described second pressure transmission hole is between locating snap ring and piston, described locating snap ring and urceolus and mandrel axial restraint, wherein the first auxiliary packing element comprises packing element body and metal coating ring, described metal coating is located on one end of packing element body, the outside wall surface of packing element body and the internal face of described metal coating ring suitable, the cover of the first auxiliary packing element has one end of metal coating ring to stretch in the first pressure ring, described second auxiliary packing element is identical with the first auxiliary packing element structure, the cover of the second auxiliary packing element has one end of metal coating ring to stretch in the second pressure ring.
As preferably, described metal coating ring is divided into isometrical section and extension diameter section vertically, described isometrical section cylindrical, the diameter of described extension diameter section increases gradually in cone barrel, and the minimum one end of described extension diameter section diameter is connected with described isometrical section.
As preferably, described isometrical section is connected by linkage section with described extension diameter section, and described linkage section extends radially outward from the end of isometrical section and forms.
As preferably, the material of described metal coating ring is No. 10 steel.
As preferably, the wall thickness of described metal coating ring is 2mm to 4mm.
As preferably, the wall thickness of described metal coating ring is 3mm.
As preferably, the angle between the bus of described extension diameter section and axis is 45 °.
As preferably, between described left shearing ring and the first joint, and be respectively arranged with the first O-ring seals between left shearing ring and mandrel and seal.
As preferably, be provided with the second O-ring seals between described piston and urceolus and mandrel and seal.
As preferably, seal by arranging the 3rd O-ring seals between described urceolus and the second joint.
As preferably, described mandrel with between the first joint and the second joint for being threaded.
Compared with prior art, beneficial effect of the present invention is:
Open hole packer of the present invention transmits hydraulic pressure by the first pressure transmission hole and the second pressure transmission hole, and then the left shearing ring of pushing set on mandrel and piston are cut off respective shear pin and move to middle part, the mechanical presses power of generation finally makes the packing element Expansion sealing bore hole Reservoir Section being positioned at middle part.Meanwhile, the dentalation with slip insert of design make setting after main packing element not deblocking, bearing capacity is high; Setting procedure completes instantaneously, saves the operating time.Smart structural design, reliable, to horizontal well or the effective packing of straight well bore hole Reservoir Section, the operation of each payzone section security implementation can be ensured through overtesting.Metal coating ring in the present invention can improve the bearing capacity of packing element, and the packing element of prior art is not when having safeguard measure, and packing element bearing capacity is 40MPa ~ 50MPa; And same packing element packing element bearing capacity after installation metal coating ring of the present invention is 60MPa ~ 70MPa; After packer set, metal ring of the present invention can be supported on sleeve pipe or the bore hole borehole wall, effectively can stablize tubing string, and serve protective effect to packing element, considerably increases the bearing capacity of packing element.
Accompanying drawing explanation
Fig. 1 is that the structure of open hole packer of the present invention partly cuts open figure.
Fig. 2 is the structural representation of the first auxiliary packing element in the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
Fig. 1 is that the structure of open hole packer of the present invention partly cuts open figure.Fig. 2 is the structural representation of the first auxiliary packing element in the present invention.As depicted in figs. 1 and 2, open hole packer comprises: the mandrel 17 with axially extending bore, one end of mandrel 17 connects the first joint 1, the other end of mandrel 17 connects the second joint 18, and mandrel 17 is socketed left shearing ring 3, auxiliary packing element 6, first spacer ring 7 of spacing ring the 5, first auxiliary packing element pressure ring 22, first, main packing element 9, second spacer ring 23, the second auxiliary auxiliary packing element pressure ring 11 of packing element 10, second, right shearing ring 12, piston 14 and locating snap ring 15 successively from the first joint 1 to the second joint 18, wherein one end of left shearing ring 3 is stretched between the first joint 1 and mandrel 17, and left shearing ring 3 and the first joint 1 and mandrel 17 seal and are slidably connected, left shearing ring 3 is connected by the first shear pin 2 with the first joint 1, left shearing ring 3 and the first joint 1 and mandrel 17 form the first pressure transmission room 24 jointly, mandrel 17 have the first pressure transmission hole 25 of connection first pressure transmission room 24 and mandrel 17 inside, the inner surface of left shearing ring 3 has dentation slip insert, mandrel 17 has the first slip groove, is provided with on the first slips 4, first slips 4 and has the retaining slips tooth matched with the slips tooth on left shearing ring 3 in the first slip groove, be provided with support ring 8 between main packing element 9 and mandrel 17, support ring 8 is positioned at the middle part of main packing element 9, in the outside of piston 14, cover has urceolus 16, one end and second joint 18 of urceolus 16 are tightly connected, the other end of urceolus 14 is connected by the second shear pin 13 with right shearing ring 12, piston 14 is connected with slipper seal between mandrel 17 and urceolus 16, the inwall of piston 14 has dentation slip insert, mandrel 17 has the second slip groove, be provided with the second slips 26, second slips 26 in the second slip groove and there is the retaining slips tooth matched with the slips tooth on piston 14, mandrel 17 also has the second pressure transmission hole 27, second pressure transmission hole 27 is between locating snap ring 15 and piston 14, locating snap ring 15 and urceolus 16 and mandrel 17 axial restraint, wherein the first auxiliary packing element 6 comprises packing element body 61 and metal coating ring 62, metal coating ring 62 is placed on one end of packing element body 61, the outside wall surface of packing element body 61 and the internal face of metal coating ring 62 suitable, the cover of the first auxiliary packing element 6 has one end of metal coating ring 62 to stretch in the first pressure ring 22, second auxiliary packing element 10 is identical with the first auxiliary packing element 6 structure, the cover of the second auxiliary packing element 10 has one end of metal coating ring 62 to stretch in the second pressure ring 11.
Open hole packer of the present invention transmits hydraulic pressure by the first pressure transmission hole and the second pressure transmission hole, and then the left shearing ring of pushing set on mandrel and piston are cut off respective shear pin and move to middle part, the mechanical presses power of generation finally makes the packing element Expansion sealing bore hole Reservoir Section being positioned at middle part.Meanwhile, the dentalation with slip insert of design make setting after main packing element not deblocking, bearing capacity is high; Setting procedure completes instantaneously, saves the operating time.Smart structural design, reliable, to horizontal well or the effective packing of straight well bore hole Reservoir Section, the operation of each payzone section security implementation can be ensured through overtesting.Metal coating ring in the present invention can improve the bearing capacity of packing element, and the packing element of prior art is not when having safeguard measure, and packing element bearing capacity is 40MPa ~ 50MPa; And same packing element packing element bearing capacity after installation metal coating ring of the present invention is 60MPa ~ 70MPa; After packer set, metal ring of the present invention can be supported on sleeve pipe or the bore hole borehole wall, effectively can stablize tubing string, and serve protective effect to packing element, considerably increases the bearing capacity of packing element.
Preferred as of above-described embodiment; see Fig. 2, metal coating ring 62 is divided into isometrical section 621 and extension diameter section 622 vertically, and isometrical section 621 cylindrical; the diameter of extension diameter section 622 increases gradually in cone barrel, and the minimum one end of extension diameter section 622 diameter is connected with isometrical section 1.The metal coating ring of this kind of structure can be supported on sleeve pipe or the bore hole borehole wall after packing element expansion is setting, effectively can stablize tubing string, and serve protective effect to packing element, considerably increase the bearing capacity of packing element.Further, isometrical section 1 is connected by linkage section 3 with extension diameter section 2, and linkage section 3 extends radially outward from the end of isometrical section 1 and forms.More effectively packing element body can be supported and protects.In the present embodiment, the material of metal coating ring is No. 10 steel.Can expand with packing element and be out of shape thereupon, thus packing element is supported and protects.In the present embodiment, the wall thickness of metal coating ring is 2mm to 4mm, is preferably 3mm.Angle between the bus of extension diameter section and axis is 40 ° ~ 60.Preferably, the angle between the bus of extension diameter section and axis is 45 °.Can better support packing element and protect.Another kind as above-described embodiment is preferred, and the extension diameter section of metal coating ring has otch along bus, and extension diameter section is divided into 3 ~ 8 lobes by otch.Can certainly be more, as extension diameter section is divided into 12 lobes by otch.Generally be divided into 6 lobes comparatively suitable.Like this can when packing element expand, extension diameter section expands outwardly thereupon, and extension diameter section is butted on sleeve pipe or shaft in wall is helped packing element, protected.
Between left shearing ring 3 and the first joint 1, and be respectively arranged with the first O-ring seals 19,20 between left shearing ring 3 and mandrel 17 and seal.Be provided with the second O-ring seals 28 between piston 14 and urceolus 16 and mandrel 17 to seal.Seal by arranging the 3rd O-ring seals 29 between urceolus 16 and the second joint 18.Mandrel 17 with between the first joint 1 and the second joint 18 for being threaded.Sealing ring 21 is provided with between support ring 8 and mandrel 17.Mandrel 17 has inclined-plane, and this inclined-plane stops locating snap ring 15 to move to the first joint, and the inwall of urceolus 16 has convex annular stupefied 161, this convex annular stupefied 161 is stuck between locating snap ring 15 and the second joint 18.
Above embodiment is only exemplary embodiment of the present invention, and be not used in restriction the present invention, protection scope of the present invention is defined by the claims.Those skilled in the art can in essence of the present invention and protection domain, and make various amendment or equivalent replacement to the present invention, this amendment or equivalent replacement also should be considered as dropping in protection scope of the present invention.
Claims (10)
1. open hole packer, it is characterized in that, comprise: the mandrel with axially extending bore, one end of mandrel connects the first joint, the other end connects the second joint, and mandrel is socketed left shearing ring, spacing ring, the first auxiliary packing element pressure ring, the first auxiliary packing element, the first spacer ring, main packing element, the second spacer ring, the second auxiliary packing element, the second auxiliary packing element pressure ring, right shearing ring, piston and locating snap ring successively from the first joint to the second joint, wherein one end of left shearing ring is between the first joint and mandrel, and be slidably connected with the first joint and stem seal, left shearing ring is connected by the first shear pin with the first joint, left shearing ring and the first joint and mandrel form the first pressure transmission room jointly, mandrel have the first pressure transmission hole of connection first pressure transmission room and mandrel inside, the inner surface of left shearing ring has dentation slip insert, mandrel has the first slip groove, is provided with the first slips in the first slip groove, described first slips has the retaining slips tooth matched with the slips tooth on left shearing ring, be provided with support ring between main packing element and mandrel, support ring is positioned at the middle part of main packing element, in the outside of piston, cover has urceolus, one end of urceolus is connected with the second joint sealing, the other end of urceolus is connected by the second shear pin with right shearing ring, piston is connected with slipper seal between mandrel and urceolus, the inwall of piston has dentation slip insert, mandrel has the second slip groove, be provided with the second slips in the second slip groove, described second slips has the retaining slips tooth matched with the slips tooth on piston, described mandrel also has the second pressure transmission hole, described second pressure transmission hole is between locating snap ring and piston, described locating snap ring and urceolus and mandrel axial restraint, wherein the first auxiliary packing element comprises packing element body and metal coating ring, described metal coating is located on one end of packing element body, the outside wall surface of packing element body and the internal face of described metal coating ring suitable, the cover of the first auxiliary packing element has one end of metal coating ring to stretch in the first pressure ring, described second auxiliary packing element is identical with the first auxiliary packing element structure, the cover of the second auxiliary packing element has one end of metal coating ring to stretch in the second pressure ring,
Wherein, sealing ring is provided with between described support ring and described mandrel.
2. open hole packer according to claim 1; it is characterized in that, described metal coating ring is divided into isometrical section and extension diameter section vertically, described isometrical section cylindrical; the diameter of described extension diameter section increases gradually in cone barrel, and the minimum one end of described extension diameter section diameter is connected with described isometrical section.
3. open hole packer according to claim 2, is characterized in that, described isometrical section is connected by linkage section with described extension diameter section, and described linkage section extends radially outward from the end of isometrical section and forms.
4. open hole packer according to claim 2, is characterized in that, the material of described metal coating ring is No. 10 steel.
5. open hole packer according to claim 2, is characterized in that, the wall thickness of described metal coating ring is 2mm to 4mm.
6. open hole packer according to claim 2, is characterized in that, the angle between the bus of described extension diameter section and axis is 45 °.
7. open hole packer according to claim 1, is characterized in that, between described left shearing ring and the first joint, and is respectively arranged with the first O-ring seals between left shearing ring and mandrel and seals.
8. open hole packer according to claim 1, is characterized in that, is provided with the second O-ring seals and seals between described piston and urceolus and mandrel.
9. open hole packer according to claim 1, is characterized in that, seals between described urceolus and the second joint by arranging the 3rd O-ring seals.
10. open hole packer according to claim 1, is characterized in that, described mandrel with between the first joint and the second joint for being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752629.7A CN103670326B (en) | 2013-12-31 | 2013-12-31 | Open hole packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752629.7A CN103670326B (en) | 2013-12-31 | 2013-12-31 | Open hole packer |
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| Publication Number | Publication Date |
|---|---|
| CN103670326A CN103670326A (en) | 2014-03-26 |
| CN103670326B true CN103670326B (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310752629.7A Active CN103670326B (en) | 2013-12-31 | 2013-12-31 | Open hole packer |
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| CN (1) | CN103670326B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123753A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Soluble easy-to-drill open hole packer and using method thereof |
| CN111927382B (en) * | 2020-08-07 | 2022-04-29 | 中国石油大学(北京) | Packer (CN) |
| CN114458223B (en) * | 2021-07-06 | 2023-10-31 | 中海油能源发展股份有限公司 | Layered packer for large-drift-diameter water injection and application method thereof |
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| CN201513153U (en) * | 2009-09-09 | 2010-06-23 | 大连职业技术学院 | Supporting expansion-sealing electric packer |
| CN101864922A (en) * | 2010-07-02 | 2010-10-20 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Compression type dual-sealing open hole packer |
| CN102071900A (en) * | 2010-11-23 | 2011-05-25 | 中国石油天然气股份有限公司 | Self-constant pressure expanding open hole packer |
| CN103184850A (en) * | 2011-12-29 | 2013-07-03 | 安东石油技术（集团）有限公司 | Bidirectional seat seal hook-wall packer, preparation method thereof and shaft circumferential packing method |
| CN203716919U (en) * | 2013-12-31 | 2014-07-16 | 安东石油技术（集团）有限公司 | Open hole packer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8651180B2 (en) * | 2007-10-26 | 2014-02-18 | Gustavo Martin Jara | Hydraulic packer constructed in glass-fiber reinforced epoxy and stainless steel |
-
2013
- 2013-12-31 CN CN201310752629.7A patent/CN103670326B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201513153U (en) * | 2009-09-09 | 2010-06-23 | 大连职业技术学院 | Supporting expansion-sealing electric packer |
| CN101864922A (en) * | 2010-07-02 | 2010-10-20 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Compression type dual-sealing open hole packer |
| CN102071900A (en) * | 2010-11-23 | 2011-05-25 | 中国石油天然气股份有限公司 | Self-constant pressure expanding open hole packer |
| CN103184850A (en) * | 2011-12-29 | 2013-07-03 | 安东石油技术（集团）有限公司 | Bidirectional seat seal hook-wall packer, preparation method thereof and shaft circumferential packing method |
| CN203716919U (en) * | 2013-12-31 | 2014-07-16 | 安东石油技术（集团）有限公司 | Open hole packer |
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| Publication number | Publication date |
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| CN103670326A (en) | 2014-03-26 |
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Effective date of registration: 20181228 Address after: No. 309, Second Street, Middle and South China, West District, Tianjin Binhai Economic and Technological Development Zone, 300450 Patentee after: Tianjin An Dong petroleum machinery Manufacturing Co., Ltd Address before: 100102 No. 8 Pingcui West Road, Donghuqu, Chaoyang District, Beijing Patentee before: Anton Oilfield Services (Group) Ltd. |
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