CN208870568U - A kind of double packing element open hole packers of combined type - Google Patents
A kind of double packing element open hole packers of combined type Download PDFInfo
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- CN208870568U CN208870568U CN201821206920.9U CN201821206920U CN208870568U CN 208870568 U CN208870568 U CN 208870568U CN 201821206920 U CN201821206920 U CN 201821206920U CN 208870568 U CN208870568 U CN 208870568U
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- packing element
- cylinder sleeve
- center tube
- combined type
- open hole
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- 238000012856 packing Methods 0.000 title claims abstract description 71
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 230000007704 transition Effects 0.000 claims abstract description 19
- 230000001012 protector Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- MHKWSJBPFXBFMX-UHFFFAOYSA-N iron magnesium Chemical compound [Mg].[Fe] MHKWSJBPFXBFMX-UHFFFAOYSA-N 0.000 claims description 3
- 239000010985 leather Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 241000826860 Trapezium Species 0.000 claims 1
- 238000010008 shearing Methods 0.000 claims 1
- 230000001788 irregular Effects 0.000 abstract description 4
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a kind of double packing element open hole packers of combined type, including top connection, upper center tube, upper cylinder sleeve, transition joint, jointing, lower center tube, lower cylinder sleeve and piston, one end of the upper center tube is spirally connected with top connection, its other end is spirally connected with transition joint, the outer wall of the upper center tube is equipped with upper liquid flow hole, the transition joint is externally provided with cylinder sleeve, the outer wall of transition joint is equipped with groove, lock ring is equipped in groove, the upper packing element of section approximate trapezoid is arranged on the upper center tube outer wall, the both ends of upper packing element are equipped with end packing element, back band and lead ring, one of lead ring is spirally connected with top connection, another lead ring is spirally connected with upper cylinder sleeve, the upper cylinder sleeve is bolted with the lock ring set of section approximation T font, lock ring set is bolted with shear sleeve.High Pressure Difference can either be born, and irregular Open-Hole Section can be suitable for, the exploitation of open hole well shale gas can be widely suitable for.
Description
Technical field
The utility model belongs to technical field of oil field equipment more particularly to a kind of double packing element open hole packers of combined type.
Background technique
Along with the development of science and technology, more clean petroleum resources gradually Substitute coal resource, present automobile, industry, state
Anti-, family etc. is huge to petroleum resources demand.Conventional gas and oil is gradually replaced by non-conventional gas at present, according to verifying, very
It is huge to advise petroleum resources amount of storage, the shale gas of mainly some densifications, coal bed gas etc. all has the feasibility of exploitation.But it is non-
Conventional gas and oil reservoir is all the feature with hyposmosis, is individual well multi-layer multi-stage staged fracturing technology mostly now, wherein mainly
It is open hole packer staged fracturing technology and fast brill composite bridge plug staged fracturing technology.
Conventional open hole packer only has individual compression either expanding, wherein compression type open hole packer pressure-bearing
Height, and expanding open hole packer sets range extensively can preferably adapt to irregular Open-Hole Section.
Summary of the invention
Place in order to overcome the above-mentioned deficiencies of the prior art, the utility model provide a kind of double packing element naked eye packings of combined type
Device can either bear High Pressure Difference, and can be suitable for irregular Open-Hole Section, can be widely suitable for the exploitation of open hole well shale gas.
To achieve the above objectives, the present invention adopts the following technical solutions: a kind of double packing element open hole packers of combined type,
Including top connection, upper center tube, upper cylinder sleeve, transition joint, jointing, lower center tube, lower cylinder sleeve and piston, the upper center
One end of pipe is spirally connected with top connection, and the other end is spirally connected with transition joint, and the outer wall of the upper center tube is equipped with upper liquid flow hole, institute
It states transition joint and is externally provided with cylinder sleeve, the outer wall of transition joint is equipped with groove, lock ring is equipped in groove, outside the upper center tube
The upper packing element of section approximate trapezoid is arranged on wall, the both ends of upper packing element are equipped with end packing element, back band and lead ring, one of them is led
Ring is spirally connected with top connection, another lead ring is spirally connected with upper cylinder sleeve, and the upper cylinder sleeve is bolted with the lock ring set of section approximation T font,
Lock ring set is bolted with shear sleeve, and shear sleeve is fixed on jointing by shear pin, jointing one end and transition joint
It being spirally connected, the other end is spirally connected with lower cylinder sleeve, lower center tube, and it is lower that cavity is formed between cylinder sleeve and lower center tube, it is equipped in the cavity
Piston, piston one end are connected with elastic component, and the elastic component other end is connect with lower cylinder sleeve, and lower cylinder sleeve is equipped with for circulating liquid
Lower liquid flow hole is arranged with lower rubber cylinder assembly on lower center tube outer wall, and lower rubber cylinder assembly one end is connect with lower cylinder sleeve, other end connection
There is lower end slip joint.
In the above-mentioned technical solutions, the lower rubber cylinder assembly includes the interior packing element, steel disc, outer packing element being arranged from inside to outside,
The both ends of the outer packing element are the inclined-plane shunk, and the both ends of outer packing element are equipped with shoulder protector, and one of shoulder protector and lower cylinder sleeve connect
It connects, another shoulder protector is connect with lower end slip joint.
In the above-mentioned technical solutions, the end packing element is in leather cup shape, and hardness is 90 degree of shore hardness, the hardness of upper packing element
It is 80 degree of shore hardness, the packing element combination of composition 90-80-90 degree.
In the above-mentioned technical solutions, the back band includes the interior back band and outer back band welded together, interior back band and outer back
Circle is equipped with 10-14 notch of interlaced arrangement, and interior back band is smooth aluminum material, and outer back band is magnesium iron material.
In the above-mentioned technical solutions, the side that the outer back band is contacted with end packing element is bowl-shape, the outside that opening is 60 °
Radial angle be 30 °.
In the above-mentioned technical solutions, the lead ring is 30 ° close to the side of outer back band and radial angle.
In the above-mentioned technical solutions, the lock ring is ladder structure of right angle, and its outer wall is equipped with 30 ° of buttless thread,
The inclination angle on inclined-plane is 20 °.
In the above-mentioned technical solutions, strainer is equipped at the lower liquid flow hole and compress the briquetting of strainer.
In the above-mentioned technical solutions, the lower end slip joint is equipped with the NPT relief hole being connected to lower rubber cylinder assembly,
NPT relief hole is blocked by NPT screw plug.
In the above-mentioned technical solutions, the elastic component is spring.
The beneficial effects of the utility model are: compression type open hole packer and expanding open hole packer are incorporated into one
It rises, the double packing elements of single packer, but two packing elements set mode difference, one is compression, and one is expanding, so that envelope
Can either bear larger pressure difference again every device can set in irregular Open-Hole Section, make packer while having pressure-bearing high and setting model
Wide feature is enclosed, the limitation of original single compression and expanding open hole packer is breached, so that open hole packer is more practical
Efficiently.
Detailed description of the invention
Fig. 1 is semi-section structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of lock ring in Fig. 1.
Fig. 3 is the structural schematic diagram of strainer and briquetting in Fig. 1.
Fig. 4 is the structural schematic diagram of back band in Fig. 1.
Wherein: 1, top connection, 2, lead ring, 3, upper packing element, 4, upper center tube, 5, upper cylinder sleeve, 6, transition joint, 7, lock ring,
8, lock ring set, 9, shear sleeve, 10, shear pin, 11, jointing, 12, strainer, 13, lower piston, 14, spring, 15, lower cylinder
Set, 16, shoulder protector, 17, outer packing element, 18, steel disc, 19, interior packing element, 20, lower center tube, 21, NPT screw plug, 22, lower end activity
Connector, 23, back band, 231, interior back band, 232, outer back band, 24, end packing element, 25, briquetting.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the utility model is described in further detail.
A kind of double packing element open hole packers of combined type as shown in Figure 1, including top connection 1, upper center tube 4, upper cylinder sleeve 5,
Transition joint 6, jointing 11, lower center tube 20, lower cylinder sleeve 15 and piston 13, one end of the upper center tube 4 and top connection 1
It is spirally connected, the other end is spirally connected with transition joint 6, and the outer wall of the upper center tube 4 is equipped with upper liquid flow hole, outside the transition joint 6
Equipped with upper cylinder sleeve 5, the outer wall of transition joint 6 is equipped with groove, and lock ring 7 is equipped in groove, is arranged on 4 outer wall of upper center tube
There is the upper packing element 3 of section approximate trapezoid, the both ends of upper packing element 3 are equipped with end packing element 24, back band 23 and lead ring 2, one of them is led
Ring 2 is spirally connected with top connection 1, another lead ring 2 is spirally connected with upper cylinder sleeve 5, and the upper cylinder sleeve 5 is bolted with the lock of section approximation T font
Ring set 8, lock ring set 8 are bolted with shear sleeve 9, and shear sleeve 9 is fixed on jointing 11 by shear pin 10, so that packer
Upper cylinder sleeve 5 pushes away motionless upper packing element 3 during the well entry process, is a kind of safety device jointing one end that anti-midway is set and intermediate
Connector is spirally connected, and 9 other end of shear sleeve is spirally connected with lower cylinder sleeve 15, lower center tube 20, is formed between lower cylinder sleeve 15 and lower center tube 20
Cavity, the cavity is interior to be equipped with piston 13, and 13 one end of piston is connected with spring 14, and 14 other end of spring is connect with lower cylinder sleeve 15, under
Cylinder sleeve 15 is equipped with the lower liquid flow hole for circulating liquid, is arranged with lower rubber cylinder assembly on 20 outer wall of lower center tube, lower rubber cylinder is total
It is connect at one end with lower cylinder sleeve 15, the other end is connected with lower end slip joint 22.Piston 13 and spring 14 spring when without hydraulic
14 be that lower piston is pressed in closed state, i.e. spring 14 is initially compressive state, 13 1 initial thrusts of piston is given, so that piston
13 are in close state.
In the above-mentioned technical solutions, the lower rubber cylinder assembly includes the interior packing element 19, steel disc 18, outer glue being arranged from inside to outside
Cylinder 17, the both ends of the outer packing element 17 are the inclined-plane shunk, and the both ends of outer packing element 17 are equipped with shoulder protector 16, one of shoulder protector
16 connect with lower cylinder sleeve 15, another shoulder protector 16 is connect with lower end slip joint 22.
In the above-mentioned technical solutions, the end packing element 14 is in leather cup shape, and hardness is 90 degree of shore hardness, upper packing element 3
Hardness is 80 degree of shore hardness, and the expansion of packing element 3 can be effectively protected in the packing element combination of composition 90-80-90 degree.
As shown in figure 4, the back band 23 includes the interior back band 231 and outer back band 232 welded together, interior 231 He of back band
Outer back band 231 is equipped with 10-14 notch of interlaced arrangement, and interior back band 231 is smooth aluminum material, and outer back band 232 is
Magnesium iron material.
In the above-mentioned technical solutions, the outer back band and the end side that contact of packing element 24 are that be open be 60 ° bowl-shape, outside
The radial angle of side is 30 °, and outer back band can be protected to be not crushed.
In the above-mentioned technical solutions, the lead ring 2 is 30 ° close to the side of outer back band and radial angle.
As shown in Fig. 2, the lock ring 7 is ladder structure of right angle, and its outer wall is equipped with 30 ° of buttless thread, inclined-plane
Inclination angle is 20 °, and the inclined-plane on inclined-plane and transition joint 6 cooperates, 30 ° of saws on 30 ° of buttless threads and lock ring set 8 on lock ring
Tooth thread engagement, can lock packer sets state.
As shown in figure 3, being equipped with strainer 12 at the lower liquid flow hole and compressing the briquetting 25 of strainer 12.Strainer 12 can filter
Liquid into piston 13 enables the sealing mechanism at piston 13 to clean and efficiently operate.Briquetting 25 passes through welding
Mode connect with lower center tube 20.
Liquid stream by lower liquid flow hole at lower piston 13, when flow stream pressure be greater than spring 14 press piston power when, piston 13
It can be pushed open by fluid pressure, liquid stream will be entered inside lower cylinder sleeve 15 and lower rubber cylinder assembly by piston 13, and lower rubber cylinder is total
At hydraulically full and then set lower rubber cylinder assembly.
Further, when the expansion of lower rubber cylinder assembly is set, length in the axial direction can shorten, lower rubber cylinder assembly lower end
Shoulder protector 16 just will drive lower end slip joint 22 and slide on lower center tube 20.
In the above-mentioned technical solutions, the lower end slip joint 22 is equipped with the NPT relief hole being connected to lower rubber cylinder assembly,
NPT relief hole is blocked by NPT screw plug 21, convenient for assembly expanding packing element, liquid is injected to the inside when assembly, so that expanding
The air opened in the packing element of formula is completely exhausted out.
In use, can be carried out according to following steps.
1, several important positions, packing element 3 as above and end packing element 24 and back band 23 are examined in necessary inspection before going into the well
To be lower than the lead ring on both sides, shear pin 10 will ensure cut groove enterprising；Outer packing element outer diameter is less than the outer diameter of two shoulder protectors 16,
NPT blocking 21 in lower end slip joint 22 needs to tighten, and confirms that errorless rear may be connected to and enters well on tubing string.
2, enter well, packer is connected on corresponding oily (set) pipe, be conveyed into well with oil (set) pipe, pay attention to lowering velocity
3, set step, decentralization tubing string in place after pitching suppress, to it is predetermined suppress pressure after, pressure pushes upper cylinder sleeve 5, on
Cylinder sleeve 5 connects lock ring set 8 and shear sleeve 9, and after thrust is greater than the shear force value of shear pin 10, upper cylinder sleeve 5 connects lock ring set 8
Upper packing element 3 is squeezed with 9 uplink of shear sleeve, lock ring set 8 can be contacted with lock ring 7 at this time, and be locked with special buttless thread, and this
Screw thread cannot directly move back tooth, so the compression of upper packing element 3 sets state and will be locked, at the same time, liquid stream passes through strainer 12
Push piston 13 to enter lower cylinder sleeve 15 and lower rubber cylinder assembly, inside lower rubber cylinder assembly will hydraulically full and bulging be adjacent to it is naked
The eye borehole wall, spring 14 just will push piston for the liquid lock in expansion glue tube in the inside of lower rubber cylinder assembly after pressure release, make to expand
It opens formula packing element and is constantly in the state of setting.
4, pressing crack construction, when pressure when pressing crack construction in oil pipe is high, liquid stream also will push the upper cylinder sleeve of pressure and lower piston, make
It obtains compression type glue barrel and expanding packing element carries out secondary set.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.
Claims (10)
1. a kind of double packing element open hole packers of combined type, including top connection, upper center tube, upper cylinder sleeve, transition joint, connection connect
Head, lower center tube, lower cylinder sleeve and piston, it is characterized in that: one end of the upper center tube is spirally connected with top connection, the other end is in
Between connector be spirally connected, the outer wall of the upper center tube is equipped with upper liquid flow hole, and the transition joint is externally provided with cylinder sleeve, transition joint
Outer wall is equipped with groove, and lock ring is equipped in groove, the upper packing element of section approximate trapezoid is arranged on the upper center tube outer wall, on
The both ends of packing element are equipped with end packing element, back band and lead ring, one of lead ring and are spirally connected with top connection, another lead ring and upper cylinder sleeve
It is spirally connected, the upper cylinder sleeve is bolted with the lock ring set of section approximation T font, and lock ring set is bolted with shear sleeve, and shear sleeve passes through shearing
Pin is fixed on jointing, and jointing one end is spirally connected with transition joint, the other end and lower cylinder sleeve, lower center tube spiral shell
It connects, it is lower that cavity is formed between cylinder sleeve and lower center tube, piston is equipped in the cavity, piston one end is connected with elastic component, elastic component
The other end is connect with lower cylinder sleeve, and lower cylinder sleeve is equipped with the lower liquid flow hole for circulating liquid, is arranged with down on lower center tube outer wall
Packing element assembly, lower rubber cylinder assembly one end are connect with lower cylinder sleeve, and the other end is connected with lower end slip joint.
2. the double packing element open hole packers of combined type according to claim 1, it is characterized in that: the lower rubber cylinder assembly include from
Interior interior packing element, steel disc, outer packing element to outer setting, the both ends of the outer packing element are the inclined-plane shunk, and the both ends of outer packing element are equal
Equipped with shoulder protector, one of shoulder protector is connect with lower cylinder sleeve, another shoulder protector is connect with lower end slip joint.
3. the double packing element open hole packers of combined type according to claim 1, it is characterized in that: the end packing element is in leather cup shape,
Its hardness is 90 degree of shore hardness, and the hardness of upper packing element is 80 degree of shore hardness, the packing element combination of composition 90-80-90 degree.
4. the double packing element open hole packers of combined type according to claim 1, it is characterized in that: the back band includes being welded on one
The interior back band and outer back band risen, interior back band and outer back band are equipped with 10-14 notch of interlaced arrangement, and interior back band is smooth
Aluminum material, outer back band are magnesium iron material.
5. the double packing element open hole packers of combined type according to claim 4, it is characterized in that: the outer back band connects with end packing element
The side of touching is that opening is 60 ° bowl-shape, on the outside of radial angle be 30 °.
6. the double packing element open hole packers of combined type according to claim 4, it is characterized in that: the lead ring is close to outer back band
Side and radial angle are 30 °.
7. the double packing element open hole packers of combined type according to claim 1, it is characterized in that: the lock ring is right-angled trapezium knot
Structure, and its outer wall is equipped with 30 ° of buttless thread, the inclination angle on inclined-plane is 20 °.
8. the double packing element open hole packers of combined type according to claim 1, it is characterized in that: being equipped with filter at the lower liquid flow hole
Net and the briquetting for compressing strainer.
9. the double packing element open hole packers of combined type according to claim 1, it is characterized in that: being set in the lower end slip joint
There is the NPT relief hole being connected to lower rubber cylinder assembly, NPT relief hole is blocked by NPT screw plug.
10. the double packing element open hole packers of combined type according to claim 1, it is characterized in that: the elastic component is spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821206920.9U CN208870568U (en) | 2018-07-27 | 2018-07-27 | A kind of double packing element open hole packers of combined type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821206920.9U CN208870568U (en) | 2018-07-27 | 2018-07-27 | A kind of double packing element open hole packers of combined type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208870568U true CN208870568U (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821206920.9U Active CN208870568U (en) | 2018-07-27 | 2018-07-27 | A kind of double packing element open hole packers of combined type |
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| CN (1) | CN208870568U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915631A (en) * | 2018-07-27 | 2018-11-30 | 四机赛瓦石油钻采设备有限公司 | A kind of double packing element open hole packers of combined type |
-
2018
- 2018-07-27 CN CN201821206920.9U patent/CN208870568U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915631A (en) * | 2018-07-27 | 2018-11-30 | 四机赛瓦石油钻采设备有限公司 | A kind of double packing element open hole packers of combined type |
| CN108915631B (en) * | 2018-07-27 | 2023-10-24 | 四机赛瓦石油钻采设备有限公司 | Combined double-rubber-cylinder open hole packer |
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