CN203847057U - Water injection packer - Google Patents
Water injection packer Download PDFInfo
- Publication number
- CN203847057U CN203847057U CN201420168290.6U CN201420168290U CN203847057U CN 203847057 U CN203847057 U CN 203847057U CN 201420168290 U CN201420168290 U CN 201420168290U CN 203847057 U CN203847057 U CN 203847057U
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- Prior art keywords
- packing element
- piston
- water injection
- central tube
- injection packer
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 238000002347 injection Methods 0.000 title claims abstract description 52
- 239000007924 injection Substances 0.000 title claims abstract description 52
- 238000012856 packing Methods 0.000 claims abstract description 126
- 238000011010 flushing procedure Methods 0.000 claims description 59
- 239000012530 fluid Substances 0.000 claims description 26
- 238000005406 washing Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 9
- 238000007789 sealing Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model provides a water injection packer, this water injection packer are high temperature resistant, high pressure to can adjust the setting pressure according to well depth and water injection pressure, can prevent to sit midway and seal and the water when the tubular column stops annotating scurries the phenomenon. This water injection packer comprises top connection, lower clutch and center tube, and top connection and lower clutch threaded connection respectively are in the center tube both ends, and its characterized in that is equipped with packing element core pipe in the outside cover of center tube center, seals to separate the part and establishes in the packing element core pipe outside, seals to separate part lower extreme and center tube outside cover and is equipped with the urceolus, is equipped with between urceolus and center tube and sits and seal part and deblocking part sit and seal the part be equipped with by the locking block body and the locking block component prevent midway and sit and seal the part.
Description
Technical field
The utility model relates to a kind of water injection packer, is particularly applied to the layered waterflooding packer of high temperature resistant, the high pressure in water injection well, and it can regulate and set pressure according to well depth and water injection pressure, can prevent from setting water breakthrough while stopping noting with tubing string midway.
Background technology
Although what existing packer pressure had can meet high pressure dispensing needs, because adopting expansion packing element, packing element temperature tolerance is poor, and removing seal for packer pressure affected by well depth and water injection pressure larger, separate seal pressure high, cannot trip out because of deblocking not appears in part well.Some packers (the Y341-114 high pressure water injection packer of introducing as the 21st 11 phases of volume of " petroleum machinery " November in 1993) mainly form by setting part, anti-flushing well, sealing, deblocking part, it adopts hydrostatic setting, more than setting the high 16MPa of need of pressure, and while setting, water nozzle must be closed, therefore need cementing truck to suppress cooperation, increased test job amount.
A kind of long-rubber-barrel high-pressure water injection packer is disclosed in ZL201220005258.7, it comprises packing element and central tube, packing element is enclosed within outside central tube, the upper end of packing element is connected with upper pressing cap, the lower end of packing element is connected with lower pressing cap, the upper end of upper pressing cap 5 connects top connection, the lower end of lower pressing cap connects lower contact, top connection inside has a duct, in duct, be provided with the multifunction valve system for packer setting and deblocking, in top connection, be provided with decompress(ion) hole, decompress(ion) hole is communicated with the upper end in multifunction valve system, the medial extremity of packer is provided with liquid inlet/outlet, the corresponding inner side that is communicated with multifunction valve system of liquid inlet/outlet.Although this packer pressure can meet high pressure dispensing needs, because adopting extension Principle and expansion packing element, therefore, its temperature tolerance is poor, and it is larger that this removing seal for packer pressure is affected by well depth and water injection pressure, separate seal pressure high, part well occurs because can not tripping out by deblocking.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of water injection packer, and this water injection packer is high temperature resistant, high pressure, and can set pressure according to well depth and water injection pressure adjusting, can prevent from setting the water breakthrough phenomenon while stopping noting with tubing string midway.
The technical solution of the utility model is as follows:
A kind of water injection packer, it is made up of top connection, lower contact and central tube, top connection and lower contact are threadedly connected to respectively central tube two ends, it is characterized in that, be set with packing element core pipe in central tube central authorities outside, packing parts are located at packing element core pipe outside, are arranged with urceolus in packing parts lower end and outside central tube, between urceolus and central tube, be provided with and set parts and deblocking parts, be provided with at the described parts that set the anti-parts that set that formed by lock dog body and lock dog midway.
According to above structure, this water injection packer can be able to be realized and setting and deblocking, and prevents from setting midway.
In addition, described packing parts are a packing element, at packing element two ends respectively with upper pressing cap and lower pressing cap butt, upper pressing cap is fixed on outside, packing element core pipe upper end, lower pressing cap is enclosed within on packing element core pipe and moves vertically, the lower surface of lower pressing cap and packing element piston upper end butt, and packing element piston moves vertically between urceolus and central tube, lower end at central tube offers water hole, and the space between inner urceolus and the central tube with packing element piston lower end of central tube is communicated with by this water hole.
According to above structure, when to central tube water filling, water enters via water hole in the space between urceolus and the central tube of piston lower end, utilizes hydraulic drive piston to move up, and then extruding packing element.After packing element is squeezed, radially expansion, realizes packing.
In addition, the described parts that set are made up of retaining ring and lower fluid cylinder, described deblocking parts are made up of deblocking pin, deblocking sliding sleeve and fixed piston, retaining ring is fixed on deblocking sliding sleeve, and be formed with outer lock tooth in retaining ring outside, lower fluid cylinder is clipped between lower pressing cap and packing element piston, the inside, lower end of lower fluid cylinder is formed with the internal lock tooth locking together with retaining ring outer lock tooth, deblocking slides over central tube and slides axially outward, fixed piston is fixed on central tube outside, and deblocking sliding sleeve is connected by deblocking pin with fixed piston.
According to above structure, when piston moves up, lower fluid cylinder is subject to piston extruding and also moves up.And then tight with fixing retaining ring lock, prevent packing element resilience, realize and having set.In the time of deblocking, upwards lift central tube and move up, deblocking pin is cut off, and then packing element automatic rebounding, realize deblocking.Compared with other packers, deblocking only need be cut off the power of deblocking pin, therefore separates seal pressure lower.
In addition, be provided with protrusion-dispelling part between described packing element and upper pressing cap and between packing element and lower pressing cap, described packing element is the packing element that fluorubber material is made.
According to said structure, owing to being provided with protrusion-dispelling part at packing element two ends, in the time being under pressure, this protrusion-dispelling part produces plastic strain, and it is large that external diameter becomes, and when packing element is stressed while moving to both sides, protrusion-dispelling part plays iris action, therefore high pressure resistant.And, because packing element has adopted fluorine glue material, therefore high temperature resistant.
In addition, lock dog runs through the lower end of packing element piston, and move radially along water injection packer, one end by radially inner side of lock dog is shaped as wedge shape, and be sticked in the groove of lower contact, one end and the lock dog body butt by radial outside of lock dog, lock dog body is pressed into lock dog in groove through packing element piston, on lock dog body, be provided with shear pin, this shear pin is fixed on lock dog body in lower contact.
According to said structure, when to the water filling of piston lower end, first hydraulic pressure cut off shear pin, make afterwards lock dog body move down, thereby lock dog exposes, and piston can be moved up.Can prevent from thus setting midway.
In addition, between packing element core pipe and central tube, be formed with well-flushing passage, the top and bottom of packing element core pipe are respectively equipped with well washing hole and lower well washing hole, top connection at this water injection packer is fixed with well-flushing cylinder sleeve outward, between top connection and well-flushing cylinder sleeve, be provided with flushing valve, flushing valve seals upper well washing hole.
Offer porose in top connection, top connection inside is communicated with by this hole with the space between top connection and well-flushing cylinder sleeve, flushing valve is made up of spring, flushing valve piston and T-shaped circle, flushing valve piston moves vertically in ring cavity between well-flushing cylinder sleeve and top connection, spring and flushing valve piston upper end butt are also downwards to the flushing valve piston application of force, T-shaped circle is fixed on packing element core pipe upper end, and the butt of flushing valve piston lower end and T-shaped circle also seals upper well washing hole.
Described flushing valve piston is made up of piston body and plunger backer cap, and piston body and plunger backer cap are fixed together, and piston body is connected with spring, and plunger backer cap is connected to T-shaped circle.
According to said structure, the piston of well-flushing cylinder sleeve inside seals with T-shaped circle under the effect of spring, in the time that needs are opened flushing valve, certain pressure must be suppressed in water injection packer outside, promotion piston moves upward, piston is separated with T-shaped circle, expose the upper well washing hole on packing element core pipe top, so that next step well-flushing.Therefore, only need the regulating spring elastic force just can preset flushing valve opening pressure.In the time stopping noting, flushing valve under spring force effect in closed condition, water breakthrough while therefore having prevented from stopping noting.
Brief description of the drawings
Fig. 1 is the integrally-built half sectional view of water injection packer of the present utility model.
Fig. 2 is the half sectional view of the flushing valve part of water injection packer.
Fig. 3 be water injection packer packing parts, set the half sectional view of parts and deblocking parts.
Fig. 4 is the anti-half sectional view that sets parts parts of water injection packer.
Label declaration
1: top connection;
2: central tube;
3: lower contact;
4: packing element;
5: packing element core pipe;
6: well-flushing cylinder sleeve;
7: urceolus;
8: by cap;
111: piston body (flushing valve piston);
112: plunger backer cap (flushing valve piston);
13:T type circle;
14: hole;
151: upper well washing hole;
152: lower well washing hole;
21: upper pressing cap;
22,23: protrusion-dispelling part;
24: lower pressing cap;
25: set pin;
261: fixed piston;
262: deblocking pin;
263: retaining ring;
264: baffle ring;
265: deblocking sliding sleeve;
27: lower fluid cylinder;
28: packing element piston;
31: lock dog body;
32: lock dog;
33: shear pin;
34: water hole.
Detailed description of the invention
With reference to the accompanying drawings, detailed description of the invention of the present utility model is described.In the following description, using one end of the injected water of water injection packer as upper end, the other end, as lower end, by being called axially along the axis direction of water injection packer, is called radially perpendicular to the direction of axis.
As shown in Figure 1, water injection packer is mainly made up of top connection 1, central tube 2 and lower contact 3.Top connection 1 is threaded with central tube 2 upper ends, and lower contact 3 is threaded with central tube 2 lower ends.
Be fixed with well-flushing cylinder sleeve 6 in top connection 1 outside, in the ring-shaped cavity between well-flushing cylinder sleeve 6 and top connection 1, be provided with flushing valve.
Be fixed with packing element core pipe 5 in central tube 2 outsides, be enclosed within packing element core pipe 5 outsides as the packing element 4 of packing parts, in the present embodiment, packing element is the packing element that fluorubber material is made.Between central tube 2 and packing element core pipe 5, be formed with the well-flushing passage of ring-type, and offer respectively well washing hole 151(with reference to Fig. 2 at the upper and lower two ends of packing element core pipe) and lower well washing hole 152(with reference to Fig. 3).
Outside in central tube 2 and lower contact 3 is arranged with urceolus 7, and urceolus 7 is positioned at packing element 4 downsides, and is fixed on lower contact 3 by what be located at lower contact 3 by cap 8.What in the ring-shaped cavity between urceolus 7 and central tube 2 and lower contact 3, be provided with water injection packer sets parts and deblocking parts.
Below, with reference to Fig. 2～Fig. 4, the each several part structure of water injection packer is elaborated.
Fig. 2 shows the epimere part of water injection packer, mainly comprises the flushing valve parts of water injection packer.
As shown in Figure 2, well-flushing cylinder sleeve 6 is fixed on top connection 1, and the external diameter of well-flushing cylinder sleeve 6 is roughly equal with the external diameter of packing element 4 under normal circumstances.
Between well-flushing cylinder sleeve 6 and top connection 1, be provided with flushing valve piston and spring 12.This flushing valve piston is fixedly connected with plunger backer cap 112 by piston body 111 and forms, and keeps respectively sealing with well-flushing inboard wall of cylinder liner and top connection outer wall.Spring 12 upper ends are connected to top connection 1 and well-flushing cylinder sleeve 6, the upper surface butt of its lower end and piston body 111.Spring 12 is downwards to piston body 111 application of forces, thus plunger backer cap 112 and T-shaped circle 13 butts that are fixed on packing element core pipe 5, and thus, 13 pairs of plunger backer caps 112 of T-shaped circle seal, and then have sealed the upper well washing hole 151 of packing element core pipe 5.
Fig. 3 shows the stage casing part of water injection packer, mainly comprise water injection packer packing parts, set parts and deblocking parts.
As shown in Figure 3, packing element 4 is enclosed within packing element core pipe 5 outsides, and is positioned at the upside of urceolus 7.Under normal conditions, the external diameter of the outermost diameter of packing element 4 and urceolus 7 is roughly equal.
Be respectively equipped with upper pressing cap 21 and lower pressing cap 24 at the two ends of packing element 4, upper pressing cap 21 and lower pressing cap 24 are all enclosed within packing element core pipe 5 outsides.Upper pressing cap 21 and lower pressing cap 24 are respectively across the two ends up and down of protrusion-dispelling part 22,23 and packing element 4 butt.Upper pressing cap 21 is fixed on packing element core pipe 5.Lower pressing cap 24 can move vertically, and with lower fluid cylinder 27 upper end butts.
Described lower fluid cylinder 27 is located at urceolus 7 inner sides and packing element piston 28 upsides in mode that can be mobile vertically, its lower end and packing element piston 28 upper end butts.Like this, packing element piston 28 via lower fluid cylinder 27, lower pressing cap 24 and protrusion-dispelling part 23 with packing element 4 lower end butts.In addition, be formed with internal lock tooth in lower fluid cylinder 27 inner sides, bottom.
Between lower fluid cylinder 27 and central tube, be provided with fixed piston 261, fixed piston 261 is fixed on central tube 2, and keeps respectively sealing with central tube 2 outer walls and lower fluid cylinder 27 inwalls.Lower pressing cap 24 is fixed on the upper end of fixed piston 261 by setting pin 25.
Be provided with deblocking sliding sleeve 265 at fixed piston 261 downsides, this deblocking sliding sleeve 265 can slide outward at central tube vertically, but deblocking sliding sleeve 265 is fixed on fixed piston 261 by deblocking pin 262.
On deblocking sliding sleeve, be fixed with baffle ring 264.Be set with retaining ring 263 in baffle ring 264 outsides, baffle ring 264 has limited the movement of retaining ring 263 to downside.Be formed with the internal lock tooth that can lock together with the internal lock tooth of lower fluid cylinder 27 inner sides in the outside of retaining ring 263.
Fig. 4 shows the hypomere part of water injection packer, mainly comprises the anti-parts that set of water injection packer midway.
As shown in Figure 4, offer water hole 34 on the sidewall of central tube 2 lower ends, the space between inner urceolus 7 and the central tube 2 with packing element piston 28 lower ends of central tube 2 is communicated with by this water hole 34.
Packing element piston 28 is located between central tube 2 and urceolus 7, and can outside central tube 2, slide axially.The first half of packing element piston 28 keeps respectively sealing with urceolus 7 inwalls and central tube 2 outer walls.The latter half of packing element piston 28 is inserted in the annular housing between lower contact 3 and urceolus 7.Lower end edge at packing element piston 28 radially offers lock dog hole, and lock dog 32 is placed in lock dog hole in the mode that can move.One end by radially inner side of lock dog is formed as wedge shape, and embeds in the groove of lower contact 32 outer walls.
Between lower contact 3 and urceolus 7, be provided with lock dog body 33, lock dog body 33 can move vertically, and keeps respectively sealing with urceolus 7 inwalls and lower contact 3 outer walls.Lock dog body 33 is fixed on lower contact 3 outsides by shear pin 33.The upper end of lock dog body 31 is stretched between urceolus 7 and the bottom of packing element piston 28, and, lock dog 32 butts in the upper end of lock dog body 31 and lock dog hole.Thus, lock dog body 31 is pressed into lock dog 32 in groove.Because lock dog body 31 is fixed on lower contact 3 by shear pin 33, and lock dog 32 embedded lock dog hole, so limited packing element piston 28 movement vertically.
Below, specific works principle and the process of the water injection packer to present embodiment describe.
In the time of water filling, water enters in the space of the ring-type between urceolus 7 and lower contact 3 by the water hole 34 of central tube 2 bottoms.Thus, first hydraulic pressure be passed to lock dog body 31, and along with the increase of hydraulic pressure, shear pin 31 is cut off.Then lock dog body 31 moves down until lock dog body 31 lower ends are connected to by cap 8.Because lock dog body 21 moves down, make the lock dog 32 in lock dog hole expose, remove the restriction of the movement to packing element piston 28.Thereby under the effect of hydraulic pressure, packing element piston 28 moves up.
Due to packing element piston 28 and lower fluid cylinder 27 butts, lower fluid cylinder 27 and lower pressing cap 24 butts, so hydraulic pressure transfer, to setting pin 25 in lower pressing cap 24, and is cut off.Cut off and set after pin 25, lower pressing cap 24 upwards pushes protrusion-dispelling part 23 and packing element 4.Because the upper pressing cap 5 of packing element 9 upsides is fixed on packing element core pipe 6, so packing element 9 is after being extruded, compressed in the longitudinal direction, and hole enlargement diametrically, contact with the sleeve pipe outside water injection packer, realize packing.
In the process moving up at lower fluid cylinder 27, the outer lock tooth on internal lock tooth and the retaining ring 263 of lower fluid cylinder 27 inside locks together.Utilize this structure, limited the downward movement of time fluid cylinder 27.And then, stoping packing element 4 resiliences, realization sets.
In addition, on this water injection packer top, under the effect of spring 12, plunger backer cap 112 is connected to T-type circle 13 all the time, and upper well washing hole 151 is sealed.In the time of water filling, water enters from hole 14, and downward pushing piston body 111 and plunger backer cap 112.Thus, while making to have ensured water filling, upper well washing hole 151 is sealed.Thus, the well-flushing passage of having realized between packing element core pipe 5 and central tube 2 is closed in the time of water filling and while stopping noting.
In the time there is external pressure between sleeve pipe and water injection packer, under the effect of the pretightning force of spring 12, upper wellhole 151 continues to be sealed by plunger backer cap 112 and T-shaped circle 13.In the time continuing to improve said external pressure, promote plunger backer cap 112 and piston body 111 and move up, and then Compress Spring, now, plunger backer cap 112 departs from T-shaped circle 13, exposes well washing hole 151.Liquid enters the well-flushing passage between packing element core pipe 5 and central tube 2, and from packing element core pipe 5, well washing hole 152 flows out, and realizes well-flushing function.
In the time of needs deblocking, only need upper lifting pipe post.So top connection 1 and central tube 2 move up, and upper pressing cap 21, packing element core pipe 5, packing element 4, lower fluid cylinder 27 keep motionless under the effect of packing element 4 and the frictional force of sleeve pipe.In continuation, carry, and deblocking pin 262 is cut off, descend the downward mobile restriction of fluid cylinder 27 to be disengaged.Thus, by means of the screen resilience of packing element 4, lower fluid cylinder 27 moves down together with deblocking sliding sleeve 265, retaining ring 263 and baffle ring 264, and packing element 4 restores thus, has realized deblocking.
Below the effect of present embodiment is described.
When to central tube water filling, water enters via water hole in the space between urceolus and the central tube of piston lower end, utilizes hydraulic drive piston to move up, and then extruding packing element.After packing element is squeezed, radially expansion, realizes packing.
When piston moves up, lower fluid cylinder is subject to piston extruding and also moves up.And then tight with fixing retaining ring lock, prevent packing element resilience, realize and having set.In the time of deblocking, upwards lift central tube and move up, deblocking pin is cut off, and then packing element automatic rebounding, realize deblocking.Compared with other packers, deblocking only need be cut off the power of deblocking pin, therefore separates seal pressure lower.
Owing to being provided with protrusion-dispelling part at packing element two ends, in the time being under pressure, this protrusion-dispelling part produces plastic strain, and it is large that external diameter becomes, and when packing element is stressed while moving to both sides, protrusion-dispelling part plays iris action, therefore high pressure resistant.And, because packing element has adopted fluorine glue material, therefore high temperature resistant.
When to the water filling of piston lower end, first hydraulic pressure cut off shear pin, make afterwards lock dog body move down, thereby lock dog exposes, and piston can be moved up.Can prevent from thus setting midway.
The piston of well-flushing cylinder sleeve inside seals with T-shaped circle under the effect of spring, and in the time that needs are opened flushing valve, certain pressure must be suppressed in water injection packer outside, promotion piston moves upward, piston is separated with T-shaped circle, expose the upper well washing hole on packing element core pipe top, so that next step well-flushing.Therefore, only need the regulating spring elastic force just can preset flushing valve opening pressure.In the time stopping noting, flushing valve under spring force effect in closed condition, water breakthrough while therefore having prevented from stopping noting.
In addition, water injection packer of the present utility model is not limited to above-mentioned embodiment, can carry out various changes and combination.For example, lower fluid cylinder 27 can be set and adopt the structure of prevention packing element 4 resiliences of other modes, also lower fluid cylinder 27 and packing element piston 28 can be set as to one.In addition, protrusion-dispelling part 22,23 also can be set, and make packing element 4 directly be connected to upper pressing cap 21 and lower pressing cap 24.In addition, also piston body 111 and plunger backer cap 112 can be set as to one as flushing valve piston.
Claims (8)
1. a water injection packer, it is made up of top connection, lower contact and central tube, and top connection and lower contact are threadedly connected to respectively central tube two ends, it is characterized in that,
Be set with packing element core pipe in central tube central authorities outside, packing parts are located at packing element core pipe outside,
Be arranged with urceolus in packing parts lower end and outside central tube, between urceolus and central tube, be provided with and set parts and deblocking parts,
Be provided with at the described parts that set the anti-parts that set that formed by lock dog body and lock dog midway.
2. water injection packer according to claim 1, is characterized in that,
Described packing parts are a packing element,
At packing element two ends respectively with upper pressing cap and lower pressing cap butt, upper pressing cap is fixed on outside, packing element core pipe upper end, and lower pressing cap is enclosed within on packing element core pipe and moves vertically, the lower surface of lower pressing cap and packing element piston upper end butt, packing element piston moves vertically between urceolus and central tube
Lower end at central tube offers water hole, and the space between inner urceolus and the central tube with packing element piston lower end of central tube is communicated with by this water hole.
3. water injection packer according to claim 2, is characterized in that,
The described parts that set are made up of retaining ring and lower fluid cylinder,
Described deblocking parts are made up of deblocking pin, deblocking sliding sleeve and fixed piston,
Retaining ring is fixed on deblocking sliding sleeve, and is formed with outer lock tooth in retaining ring outside,
Lower fluid cylinder is clipped between lower pressing cap and packing element piston, and the inside, lower end of lower fluid cylinder is formed with the internal lock tooth locking together with retaining ring outer lock tooth,
Deblocking slides over central tube and slides axially outward,
Fixed piston is fixed on central tube outside,
Deblocking sliding sleeve is connected by deblocking pin with fixed piston.
4. according to the water injection packer described in claim 2 or 3, it is characterized in that,
Between described packing element and upper pressing cap and between packing element and lower pressing cap, be provided with protrusion-dispelling part, described packing element is the packing element that fluorubber material is made.
5. according to the water injection packer described in any one in claim 2～3, it is characterized in that,
Lock dog runs through the lower end of packing element piston, and moves radially along water injection packer,
One end by radially inner side of lock dog is shaped as wedge shape, and is sticked in the groove of lower contact,
One end and the lock dog body butt by radial outside of lock dog, lock dog body is pressed into lock dog in groove through packing element piston,
On lock dog body, be provided with shear pin, this shear pin is fixed on lock dog body in lower contact.
6. according to the water injection packer described in any one in claim 1～3, it is characterized in that,
Between packing element core pipe and central tube, be formed with well-flushing passage, the top and bottom of packing element core pipe are respectively equipped with well washing hole and lower well washing hole,
Top connection at this water injection packer is fixed with well-flushing cylinder sleeve outward, between top connection and well-flushing cylinder sleeve, is provided with flushing valve, and flushing valve seals upper well washing hole.
7. water injection packer according to claim 6, is characterized in that,
Offer in top connection porose, top connection inner with top connection and well-flushing cylinder sleeve between space be communicated with by this hole,
Flushing valve is made up of spring, flushing valve piston and T-shaped circle, flushing valve piston moves vertically in ring cavity between well-flushing cylinder sleeve and top connection, spring and flushing valve piston upper end butt are also downwards to the flushing valve piston application of force, T-shaped circle is fixed on packing element core pipe upper end, and the butt of flushing valve piston lower end and T-shaped circle also seals upper well washing hole.
8. water injection packer according to claim 7, is characterized in that,
Described flushing valve piston is made up of piston body and plunger backer cap, and piston body and plunger backer cap are fixed together, and piston body is connected with spring, and plunger backer cap is connected to T-shaped circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420168290.6U CN203847057U (en) | 2014-04-09 | 2014-04-09 | Water injection packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420168290.6U CN203847057U (en) | 2014-04-09 | 2014-04-09 | Water injection packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847057U true CN203847057U (en) | 2014-09-24 |
Family
ID=51560091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420168290.6U Expired - Fee Related CN203847057U (en) | 2014-04-09 | 2014-04-09 | Water injection packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847057U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625815A (en) * | 2017-03-23 | 2018-10-09 | 中石化石油工程技术服务有限公司 | A kind of fill-type external packer of pipe |
| CN111395990A (en) * | 2020-05-21 | 2020-07-10 | 莱西市鑫喆工程技术服务中心 | Packer |
| CN111927383A (en) * | 2020-09-17 | 2020-11-13 | 东营市正能石油科技有限公司 | Packer for water injection well of oil field |
-
2014
- 2014-04-09 CN CN201420168290.6U patent/CN203847057U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625815A (en) * | 2017-03-23 | 2018-10-09 | 中石化石油工程技术服务有限公司 | A kind of fill-type external packer of pipe |
| CN108625815B (en) * | 2017-03-23 | 2024-02-23 | 中石化石油工程技术服务有限公司 | Filling type external pipe packer |
| CN111395990A (en) * | 2020-05-21 | 2020-07-10 | 莱西市鑫喆工程技术服务中心 | Packer |
| CN111927383A (en) * | 2020-09-17 | 2020-11-13 | 东营市正能石油科技有限公司 | Packer for water injection well of oil field |
| CN111927383B (en) * | 2020-09-17 | 2020-12-11 | 东营市正能石油科技有限公司 | Packer for water injection well of oil field |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20140924 |