CN204283314U - Righting type packer - Google Patents
Righting type packer Download PDFInfo
- Publication number
- CN204283314U CN204283314U CN201420696391.0U CN201420696391U CN204283314U CN 204283314 U CN204283314 U CN 204283314U CN 201420696391 U CN201420696391 U CN 201420696391U CN 204283314 U CN204283314 U CN 204283314U
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- Prior art keywords
- piston
- central tube
- righting
- fluid cylinder
- outside
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- 230000007246 mechanism Effects 0.000 claims abstract description 117
- 238000012856 packing Methods 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 239000012530 fluid Substances 0.000 claims description 72
- 238000011010 flushing procedure Methods 0.000 claims description 46
- 238000003825 pressing Methods 0.000 claims description 38
- 229920001875 Ebonite Polymers 0.000 claims description 23
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 23
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 239000003129 oil well Substances 0.000 abstract description 31
- 238000000034 method Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 9
- 238000005406 washing Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Abstract
The utility model relates to a kind of downhole packing instrument, particularly a kind of righting type packer.Righting type packer comprises central tube, top connection, lower contact, deblocking driving mechanism, righting mechanism, sealing mechanism and sets driving mechanism, the upper end of described central tube is connected with described top connection, the lower end of described central tube is connected with described lower contact, described deblocking driving mechanism, described righting mechanism, described sealing mechanism, described in set driving mechanism and connect in turn and be sleeved on described central tube, described deblocking driving mechanism is fixedly connected with described top connection, described in set driving mechanism and be fixedly connected with described lower contact.The utility model is by arranging righting mechanism, the front opening righting mechanism set, righting mechanism is fitted tightly with the inwall of oil well casing, can ensure that packer is positioned at the center of oil well casing, and righting mechanism of the present utility model can be opened flexibly and effectively bounce back, be convenient to remove, ensure that lift pipe string operation can normally be carried out.
Description
Technical field
The utility model relates to a kind of downhole packing instrument, particularly a kind of righting type packer.
Background technology
In recent years, along with the continuous intensification of oil field prospecting degree, exploration object to be thickened fault-block structure by simple structure, in addition a lot of regional Compacted rock, the features such as reservoir is thin, for improving individual well utilization rate further, improve reservoir recovery, horizontal well, high angle hole develop rapidly and are widely used.But in process of production, due to casing programme, there is packer and remove difficulty, set and situation that packing element unbalance stress in washing well process, creeping deformation are serious, cause the problem that sealing effectiveness is poor, sealing period of validity is short.
The existing packer for deviated wells directional well, it is a kind of packer for pressing crack construction, this packer can prevent sand plug, sand card tubing string, possesses anti-flushing well function, but it does not possess righting function, because packer is not placed in the middle when applying in inclined shaft, directional well, horizontal well, unbalance stress when causing rubber to be expanded, affects sealing effectiveness.
In view of the existing packer for deviated wells directional well has above shortcoming, someone devises a kind of directional well seperated layer water injection righting type packer, by central tube, well-flushing piston rod, exchange joint, bushing pipe, well-flushing piston, glue tube base, packing element, spacer ring, propelling head, advance cover and set head, lock ring is hung, lock ring and L-type baffle ring, set piston etc. and form.This directional well seperated layer water injection righting type packer adds erection device on conventional packer, has to set righting, set deblocking and anti-flushing well function.But due to this packer application spheroid righting, when lift pipe string, if spheroid is stuck in hole place, effectively cannot bounce back, lift pipe string operation can be affected.
Utility model content
The purpose of this utility model is to provide a kind of righting mechanism and effectively bounces back, can not affect the righting type packer of lift pipe string operation.
For achieving the above object, the utility model proposes a kind of righting type packer, wherein, described righting type packer comprises central tube, top connection, lower contact, deblocking driving mechanism, righting mechanism, sealing mechanism and set driving mechanism, the upper end of described central tube is connected with described top connection, the lower end of described central tube is connected with described lower contact, described deblocking driving mechanism, described righting mechanism, described sealing mechanism, the described driving mechanism that sets connects in turn and is sleeved on described central tube, described deblocking driving mechanism is fixedly connected with described top connection, the described driving mechanism that sets is fixedly connected with described lower contact,
Described righting mechanism comprises cone, centralizer body and centralizer body seat, along direction from top to bottom, the conical surface of described cone draws near the direction of described central tube, the upper end of described cone is fixedly connected with described deblocking driving mechanism, the upper end of described centralizer body is fitted in the lower end of described cone, described righting physical efficiency moves up and down along the conical surface of described cone, the lower end of described centralizer body to be inserted in described centralizer body seat and is fixedly connected with described centralizer body seat, and the lower end of described centralizer body seat is connected with described sealing mechanism.
Righting type packer as above, wherein, the described driving mechanism that sets comprises lower fluid cylinder, first piston, retaining overcoat, rubber cylinder pressing cap and fixed piston, described fixed piston fixed cover is located on described central tube, the upper end of described rubber cylinder pressing cap is against described sealing mechanism, the lower upper end of fluid cylinder and the upper end of described retaining overcoat described in the lower end abutment of described rubber cylinder pressing cap, and described rubber cylinder pressing cap is connected by the first pin with described fixed piston, the lower end of described lower fluid cylinder is fixedly connected with described lower contact, the lower end of described retaining overcoat is connected with described first piston, described first piston is set on described central tube, and the inwall of the outside of described first piston and described lower fluid cylinder fits tightly, described first piston can slide up and down along described central tube, along direction from top to bottom, the lower end of described first piston is provided with the first inclined-plane tilted by the outside of first piston described in side direction in described first piston, the outer wall of described first inclined-plane and described central tube, the upper end of described lower contact forms lower admission chamber, corresponding described lower admission chamber, described central tube is provided with lower inlet opening.
Righting type packer as above, wherein, described sealing mechanism comprises soft gum tube, two ebonite cylinders, two spacer rings and packing element core pipe, described packing element core pipe box is located at outside described central tube, between described packing element core pipe and described central tube, there is annular space, and the described upper end of packing element core pipe and the inner side snapping of described cone, fixed piston described in the lower end abutment of described packing element core pipe, described soft gum tube, two described ebonite cylinders, two described spacer rings are all set on described packing element core pipe, and two described ebonite cylinders are separately positioned on the top of described soft gum tube and the below of described soft gum tube, described spacer ring is provided with between each described ebonite cylinder and described soft gum tube, be positioned at the lower end of upper end against described centralizer body seat of the described ebonite cylinder of the top of described soft gum tube, rubber cylinder pressing cap described in the lower end abutment being positioned at the described ebonite cylinder of the below of described soft gum tube.
Righting type packer as above, wherein, described rubber cylinder pressing cap is provided with at least one first pin hole and at least one first-class through hole, in each described first pin hole, described first pin is all installed, the tube wall of the lower end of described packing element core pipe is provided with through hole corresponding with each described first-class through hole respectively, each described first-class through hole all can be communicated with corresponding described through hole.
Righting type packer as above, wherein, described deblocking driving mechanism comprises fluid cylinder and the second piston, described upper fluid cylinder is set in the outside of described central tube, and the upper end of described upper fluid cylinder is fixedly connected with described top connection, the lower end of described upper fluid cylinder is fixedly connected with described cone, described second piston bush is located on described central tube, and described second piston is fixedly connected with the upper end of described central tube, the outside of described second piston and the inwall of described upper fluid cylinder fit tightly, and described second piston is connected by the second pin with described upper fluid cylinder.
Righting type packer as above, wherein, described upper fluid cylinder is provided with at least one second pin hole and at least one second through hole, be all provided with described second pin in each described second pin hole, each described second through hole all can be communicated with the inside of described central tube.
Righting type packer as above, wherein, described righting type packer also comprises well-flushing mechanism, described well-flushing mechanism comprises flushing valve, dummy piston and connector, described dummy piston is set on described central tube, described flushing valve is set on described dummy piston, described dummy piston, described flushing valve is all on described between fluid cylinder and described central tube, and the inwall of the outside of described flushing valve and described upper fluid cylinder fits tightly, described flushing valve and described dummy piston can move up and down along described central tube, described connector is on described between fluid cylinder and described cone, be fixedly connected with the inwall of described upper fluid cylinder outside the upper end of described connector, the lower end outside of described connector is fixedly connected with described cone, connector described in the lower end abutment of described flushing valve also fits tightly with described connector, along direction from top to bottom, described flushing valve is provided with the second inclined-plane tilted by the inner side of flushing valve described in the lateral of described flushing valve, described second inclined-plane, the upper end of described connector, the inwall of described upper fluid cylinder forms outside admission chamber, corresponding described outside admission chamber, described upper fluid cylinder is provided with outside inlet opening.
Righting type packer as above, wherein, form upper admission chamber between the upper end of described upper fluid cylinder, described central tube, the lower end of described second piston, the upper end of described flushing valve, described dummy piston, corresponding described upper admission chamber, described central tube is provided with inlet opening.
Righting type packer as above, wherein, described righting type packer also comprises retaining mechanism, described retaining mechanism comprises connecting ring and retaining ring, described connecting ring is set on described central tube, and described connecting ring comprises epimere pipe, stage casing pipe and hypomere pipe, the external diameter of described stage casing pipe is greater than the external diameter of described epimere pipe, the external diameter of described hypomere pipe is greater than the external diameter of described stage casing pipe, the external diameter of described hypomere pipe is identical with the external diameter diameter of the lower end of described fixed piston, described epimere pipe is fixedly connected with the lower end inside of described fixed piston, described retaining ring set is located on the pipe of described stage casing, and described retaining ring is between the lower surface of described fixed piston and described hypomere pipe.
Righting type packer as above, wherein, be provided with gap between the lower end outside of described fixed piston and the inwall of described retaining overcoat, between the outside of described retaining ring and the inwall of described retaining overcoat, and the inner side of the outside of described retaining ring and described retaining overcoat is provided with the screw thread that can cooperatively interact.
Compared with prior art, the utility model has following characteristics and advantage:
The utility model is by arranging righting mechanism, the front opening righting mechanism set, righting mechanism is fitted tightly with the inwall of oil well casing, can ensure that packer is positioned at the center of oil well casing, and righting mechanism of the present utility model can be opened flexibly and effectively bounce back, be convenient to remove, ensure that lift pipe string operation can normally be carried out.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the structural representation of righting type packer of the present utility model;
Fig. 2 is the structural representation that in Fig. 1, a-quadrant is amplified;
Fig. 3 is the structural representation that in Fig. 1, B region is amplified.
Drawing reference numeral illustrates:
1 central tube 11 times inlet opening
Inlet opening 2 top connection on 12
3 lower contacts 4 set driving mechanism
41 times fluid cylinder 42 first pistons
421 first inclined-plane 43 retaining overcoats
44 rubber cylinder pressing cap 441 first pin holes
45 fixed piston 5 righting mechanisms
51 cone 52 centralizer bodies
53 centralizer body seat 6 sealing mechanisms
61 soft gum tube 62 ebonite cylinders
63 spacer ring 64 packing element core pipes
641 through hole 7 deblocking driving mechanisms
Fluid cylinder 711 second pin hole on 71
Inlet opening 72 second piston outside 712
8 well-flushing mechanism 81 flushing valves
811 second inclined-plane 82 dummy pistons
83 connector 9 retaining mechanisms
91 connecting ring 911 epimere pipes
912 stage casing pipe 913 hypomere pipes
92 retaining rings
Detailed description of the invention
In order to have clearer understanding to the technical solution of the utility model, object and effect, existing accompanying drawings detailed description of the invention of the present utility model.
As shown in FIG. 1 to 3, the utility model provides a kind of righting type packer, and Fig. 1 is the structural representation of righting type packer of the present utility model, and Fig. 2 is the structural representation that in Fig. 1, a-quadrant is amplified, and Fig. 3 is the structural representation that in Fig. 1, B region is amplified.
The utility model provides a kind of righting type packer, comprise central tube 1, top connection 2, lower contact 3, deblocking driving mechanism 7, righting mechanism 5, sealing mechanism 6 and set driving mechanism 4, the upper end of central tube 1 is connected with top connection 2, the lower end of central tube 1 is connected with lower contact 3, deblocking driving mechanism 7, righting mechanism 5, sealing mechanism 6, set driving mechanism 4 and connect in turn and be sleeved on central tube 1, deblocking driving mechanism 7 is fixedly connected with top connection 2, sets driving mechanism 4 and is fixedly connected with lower contact 3; When setting, deblocking driving mechanism 7 invariant position, set driving mechanism 4 to move upward, deblocking driving mechanism 7 and the distance set between driving mechanism 4 reduce, righting mechanism 5 is squeezed and outwards opens and fit tightly with the inwall of oil well casing, sealing mechanism 6 expands outwardly and fits tightly with the inwall of oil well casing, realizes setting; During deblocking, set driving mechanism 4 invariant position, deblocking driving mechanism 7 moves upward, and deblocking driving mechanism 7 and the distance set between driving mechanism 4 increase, righting mechanism 5 and sealing mechanism 6 all bounce back to the direction of central tube 1 and are separated with oil well casing, realize deblocking; Set driving mechanism 4 and deblocking driving mechanism 7 by arranging respectively, what make packer sets operation, deblocking operation respectively by different mechanism controls, can not cause mutual interference, and guarantee sets process and deblocking process all can independently be carried out.Wherein, righting mechanism 5 comprises cone 51, centralizer body 52 and centralizer body seat 53, along direction from top to bottom, the conical surface of cone 51 draws near the direction of central tube 1, the upper end of cone 51 is fixedly connected with deblocking driving mechanism 7, and the upper end of centralizer body 52 is fitted in the lower end of cone 51, and centralizer body 52 can move up and down along the conical surface of cone 51, the lower end of centralizer body 52 to be inserted in centralizer body seat 53 and is fixedly connected with centralizer body seat 53, and the lower end of centralizer body seat 53 is connected with sealing mechanism 6, set in process, set driving mechanism 4 to move upward, and upwardly sealing mechanism 6 and centralizer body seat 53, upwardly centralizer body 52 after centralizer body seat 53 pressurized, the conical surface of the upper end edge cone 51 of centralizer body 52 moves up and opens to the direction of inwall near oil well casing, until the upper end of centralizer body 52 and the inwall of oil well casing are combined closely, in deblocking process, cone 51 moves upward under the drive setting driving mechanism 4, the conical surface of cone 51 moves up, the upper end of centralizer body 52 moves downward relative to cone 51, the upper end retraction of centralizer body 52 is separated with the inwall of oil well casing, by arranging the righting mechanism 5 be made up of cone 51, centralizer body 52, centralizer body seat 53, the righting effect of righting mechanism 5 can not only be ensured, can also ensure in lift pipe string operation that righting mechanism 5 can effectively bounce back and be separated with oil well casing, there will not be righting mechanism 5 to bounce back and to cause the situation that lift pipe string operation cannot be carried out simultaneously.
Further, as shown in Figures 1 and 3, in the righting type packer that the utility model provides, set driving mechanism 4 and comprise lower fluid cylinder 41, first piston 42, retaining overcoat 43, rubber cylinder pressing cap 44 and fixed piston 45, fixed piston 45 fixed cover is located on central tube 1, be fixedly connected with by screw thread with central tube 1 inside the upper end of fixed piston 45, the upper end of fixed piston 45 is integrally formed with boss near central tube 1 place, the external diameter of boss is less than the external diameter of fixed piston 45, rubber cylinder pressing cap 44 is set in the outside of fixed piston 45 upper end, and the upper surface of rubber cylinder pressing cap 44 and the upper surface of boss are almost positioned at same plane, the upper end of rubber cylinder pressing cap 44 is against sealing mechanism 6, the upper end of fluid cylinder 41 and the upper end of retaining overcoat 43 under the lower end abutment of rubber cylinder pressing cap 44, and rubber cylinder pressing cap 44 is connected by the first pin with fixed piston 45, the upper end of retaining overcoat 43 to be set on fixed piston 45 and with fixed piston 45 outside fit tightly, the lower end of retaining overcoat 43 is connected with first piston 42 and fits tightly with first piston 42, first piston 42 to be set on central tube 1 and to fit tightly with central tube 1, lower fluid cylinder 41 is set in outside retaining overcoat 43 and first piston 42, and the inwall of lower fluid cylinder 41 and the outside of first piston 42 fit tightly, between retaining overcoat 43 and fixed piston 45, between retaining overcoat 43 and first piston 42, between first piston 42 and central tube 1, sealing ring is provided with between lower fluid cylinder 41 and first piston 42, the lower end of lower fluid cylinder 41 is fixedly connected with lower contact 3, first piston 42 can promote retaining overcoat 43 centrally pipe 1 slide up and down, along direction from top to bottom, the lower end of first piston 42 is provided with the first inclined-plane 421 tilted by the outside of side direction first piston 42 in first piston 42, the outer wall of the first inclined-plane 421 and central tube 1, the upper end of lower contact 3 forms lower admission chamber, corresponding lower admission chamber, central tube 1 is provided with lower inlet opening 11, when the pressure in central tube 1 is greater than the pressure in lower admission chamber, liquid to flow in lower admission chamber along lower inlet opening 11 and promotes first piston 42 and drives retaining overcoat 43 to move upward.
Further, as shown in Figure 1, in the righting type packer that the utility model provides, sealing mechanism 6 comprises soft gum tube 61, two ebonite cylinders 62, two spacer rings 63 and packing element core pipe 64, packing element core pipe 64 is set in outside central tube 1, between packing element core pipe 64 and central tube 1, there is annular space, and the upper end of packing element core pipe 64 and the inner side snapping of cone 51, the lower end abutment fixed piston 45 of packing element core pipe 64, and the lower end of packing element core pipe 64 is inserted between boss on fixed piston 45 and rubber cylinder pressing cap 44, the distance between packing element core pipe 64 and central tube 1 can be kept thus constant, soft gum tube 61, two ebonite cylinders 62, two spacer rings 63 are all set on packing element core pipe 64, and two ebonite cylinders 62 are separately positioned on above and below soft gum tube 61, spacer ring 63 is provided with between each ebonite cylinder 62 and soft gum tube 61, be positioned at the lower end of upper end against centralizer body seat 53 of the ebonite cylinder 62 above soft gum tube 61, be positioned at the upper end of the lower end abutment rubber cylinder pressing cap 44 of the ebonite cylinder 62 below soft gum tube 61, sealing mechanism 6 by compression time, two ebonite cylinder 62 shape invariances, soft gum tube 61 compressive deformation expands outwardly and inwall that is final and oil well casing fits tightly, realization sets.
Further, as shown in Figures 1 and 3, in the righting type packer that the utility model provides, rubber cylinder pressing cap 44 is provided with at least one first pin hole 441 and at least one first-class through hole, in each first pin hole 441, first pin is all installed, the tube wall of the lower end of packing element core pipe 64 is provided with through hole 641 corresponding with each first-class through hole respectively, each first-class through hole all can be communicated with corresponding through hole 641.As preferably, first pin hole 441 is provided with two and is symmetrically distributed in the both sides of rubber cylinder pressing cap 44, and first-class through hole is also provided with two and is symmetrically distributed in the both sides of rubber cylinder pressing cap 44, the axis of two the first pin holes 441 and two first-class through holes is in the same plane, and the line of two the first pin hole 441 axis is mutually vertical with the line of two first-class through-bore axis.When setting, first piston 42 drives retaining overcoat 43 to move upward, rubber cylinder pressing cap 44 is subject to power upwards, when power is upwards enough large, the first pin be connected between fixed piston 45 and rubber cylinder pressing cap 44 is cut off, connection between rubber cylinder pressing cap 44 and fixed piston 45 disconnects, and now rubber cylinder pressing cap 44 can move upward and compress the ebonite cylinder 62 being positioned at below.Wherein the first pin is running stores, and righting type packer all needs before often once setting to install the first new pin in the first pin hole 441.
Further, as shown in Figures 1 and 2, in the righting type packer that the utility model provides, deblocking driving mechanism 7 comprises fluid cylinder 71 and the second piston 72, upper fluid cylinder 71 is set in the outside of central tube 1, and the upper end of upper fluid cylinder 71 is fixedly connected with top connection 2, the lower end of upper fluid cylinder 71 is fixedly connected with cone 51, second piston 72 is set on central tube 1, and the second piston 72 is fixedly connected with the upper end of central tube 1, the outside of the second piston 72 and the inwall of upper fluid cylinder 71 fit tightly, wherein go up between fluid cylinder 71 and top connection 2, second piston 72 is threaded with all adopting between central tube 1, and the upper end of the second piston 72 and top connection 2 fit tightly, between upper fluid cylinder 71 and the second piston 72, sealing ring is provided with between second piston 72 and top connection 2, second piston 72 is connected by the second pin with upper fluid cylinder 71.During deblocking, upwards pull top connection 2 by Artificial Control, top connection 2 drives upper fluid cylinder 71 and cone 51 together to move upward, and the distance after cone 51 moves upward and between rubber cylinder pressing cap 44 increases, centralizer body 52 and soft gum tube 61 all bounce back and are separated with the inwall of oil well casing, thus realize deblocking.
Further, as shown in Figures 1 and 2, in the righting type packer that the utility model provides, upper fluid cylinder 71 is provided with at least one second pin hole 711 and at least one second through hole, all be provided with the second pin in each second pin hole 711, each second through hole all can be communicated with central tube 1 inside.As preferably, second pin hole 711 is provided with two and is symmetrically distributed in the both sides of fluid cylinder 71, and second through hole is also provided with two and is symmetrically distributed in the both sides of fluid cylinder 71, the axis of two the second pin holes 711 and two second through holes is in the same plane, and the line of two the second pin hole 711 axis is mutually vertical with the line of two second through-bore axis.Joint 2 is put on during deblocking, make the power that fluid cylinder 71 is subject to upwards, when power is upwards enough large, the second pin be connected between fluid cylinder 71 and the second piston 72 is cut off, connection between upper fluid cylinder 71 and the second piston 72 disconnects, and top connection 2 drives upper fluid cylinder 71 to move upward with cone 51 and abdicates space and bounces back for centralizer body 52, soft gum tube 61.Wherein the second pin is running stores, and righting type packer all needs before often carrying out a deblocking to install the second new pin in the second pin hole 711.
Further, as shown in Figures 1 and 2, the righting type packer that the utility model provides also comprises well-flushing mechanism 8, well-flushing mechanism 8 comprises flushing valve 81, dummy piston 82 and connector 83, dummy piston 82 is set on central tube 1, flushing valve 81 is set on dummy piston 82, dummy piston 82, flushing valve 81 is all between upper fluid cylinder 71 and central tube 1, and the inwall of the outside of flushing valve 81 and upper fluid cylinder 71 fits tightly, flushing valve 81 and dummy piston 82 can centrally move up and down by pipe 1, connector 83 is between upper fluid cylinder 71 and cone 51, be fixedly connected with the inwall of upper fluid cylinder 71 outside the upper end of connector 83, the lower end outside of connector 83 is fixedly connected with cone 51, the inner side of the lower end of connector 83 is fixedly connected with the upper end of packing element core pipe 64, the lower end abutment connector 83 of flushing valve 81 also fits tightly with connector 83, along direction from top to bottom, flushing valve 81 is provided with the second inclined-plane 811 tilted by the inner side of the lateral flushing valve 81 of flushing valve 81, second inclined-plane 811, the upper end of connector 83, the inwall of upper fluid cylinder 71 forms outside admission chamber, corresponding outside admission chamber, upper fluid cylinder 71 is provided with outside inlet opening 712.When pressure in oil well casing is greater than the pressure in the admission chamber of outside, liquid enters the admission chamber of outside from outside inlet opening 712, when the pressure durations in the admission chamber of outside increases, dummy piston 82 and flushing valve 81 pressurized move upward, when the lower end of dummy piston 82 separates with connector 83 and no longer contacts, liquid in the admission chamber of outside flows in the annular space between packing element core pipe 64 and central tube 1, and after the first-class through hole on rubber cylinder pressing cap 44 is communicated with the through hole 641 of packing element core pipe 64 lower end, liquid in annular space flow to the below of sealing mechanism 6 in oil well casing from the utility model, thus the washing and cleaning operation realized the oil well casing below sealing mechanism 6.
Further, as shown in Figures 1 and 2, in the righting type packer that the utility model provides, upper admission chamber is formed between the upper end of the lower end of upper fluid cylinder 71, central tube 1, second piston 72, the upper end of flushing valve 81, dummy piston 82, admission chamber in correspondence, central tube 1 is provided with inlet opening 12.When the pressure in central tube 1 is greater than the pressure in upper admission chamber, liquid in central tube 1 flows in upper admission chamber along upper inlet opening 12, pressure durations in upper admission chamber increases, and promote dummy piston 82 and move downward with flushing valve 81, when the lower end of dummy piston 82 and connector 83 mutually against and after fitting tightly, liquid in the admission chamber of outside cannot enter the annular space between packing element core pipe 64 and central tube 1, and the washing and cleaning operation of oil well casing stops.
As preferably, as shown in Figures 1 and 3, the righting type packer that the utility model provides also comprises retaining mechanism 9, retaining mechanism 9 comprises connecting ring 91 and retaining ring 92, connecting ring 91 is set on central tube 1, and connecting ring 91 comprises epimere pipe 911, stage casing pipe 912 and hypomere pipe 913, the external diameter of stage casing pipe 912 is greater than the external diameter of epimere pipe 911, the external diameter of hypomere pipe 913 is greater than the external diameter of stage casing pipe 912, the external diameter of hypomere pipe 913 is identical with the external diameter diameter of the lower end of fixed piston 45, epimere pipe 911 is fixedly connected with the lower end inside of fixed piston 45, retaining ring 92 is set on stage casing pipe 912, and retaining ring 92 is between the lower surface of fixed piston 45 and hypomere pipe 913, retaining ring 92 and central tube 1 can produce relative rotation.
As preferably, as shown in Figures 1 and 3, in the righting type packer that the utility model provides, be provided with gap between the lower end outside of fixed piston 45 and the inwall of retaining overcoat 43, between the outside of retaining ring 92 and the inwall of retaining overcoat 43, and the inner side of the outside of retaining ring 92 and retaining overcoat 43 is provided with the screw thread that can cooperatively interact.When retaining overcoat 43 moves upward and contacts with retaining ring 92, retaining ring 92 rotates, and the screw thread on retaining overcoat 43 and the screw thread on retaining ring 92 screw mutually, when retaining overcoat 43 continues to move upward, and the threaded upper end on retaining overcoat 43 is higher than in the gap entered after retaining ring 92 between the lower end of fixed piston 45 and the inwall of retaining overcoat 43.So when setting, the screw thread cooperatively interacted between retaining overcoat 43 and retaining ring 92, can from the position keeping retaining overcoat 43 to the full extent, even if retaining overcoat 43 is subject to larger downward pressure, also can only move downward slowly and can not reply suddenly and cause setting inefficacy, thus ensureing the validity that sets.
The course of work of the righting type packer that the utility model provides is as follows:
Set process: the invariant position keeping top connection 2, central tube 1 inside is suppressed, it is inner that liquid in central tube 1 enters lower admission chamber from lower inlet opening 11, and promote first piston 42 and drive retaining overcoat 43 together to move upward, now rubber cylinder pressing cap 44 is subject to power upwards, when power is upwards enough large, first pin is cut off, retaining overcoat 43 promotes rubber cylinder pressing cap 44 and moves upward, distance between rubber cylinder pressing cap 44 and cone 51 reduces, rubber cylinder pressing cap 44 promotes the ebonite cylinder 62 be positioned at below soft gum tube 61 and makes centralizer body 52, centralizer body seat 53, ebonite cylinder 62, soft gum tube 61 all moves upward, centralizer body 52 is outwards opened until the inwall of centralizer body 52 upper end and oil well casing fits tightly along the conical surface of cone 51, now, first piston 42 continues to drive retaining overcoat 43, rubber cylinder pressing cap 44 moves upward, soft gum tube 61 compressive deformation expands outwardly until the external surface of soft gum tube 61 and the inwall of oil well casing fit tightly, thus realize setting.
Washing well process: keep setting state, when setting because rubber cylinder pressing cap 44 moves upward, first-class through hole on rubber cylinder pressing cap 44 is communicated with the through hole 641 on packing element core pipe 64, that is the annular space between central tube 1 with packing element core pipe 64 is communicated with oil well casing, now oil well casing is suppressed, liquid in oil well casing to be entered in the admission chamber of outside by the outside inlet opening 712 on upper fluid cylinder 71 and promotes dummy piston 82 and flushing valve 81 moves upward, after dummy piston 82 lower end is separated with connector 83, the space above soft gum tube 61 is positioned in oil well casing, outside admission chamber, annular space between central tube 1 and packing element core pipe 64, the space be positioned in oil well casing below soft gum tube 61 is communicated with in turn, the liquid being arranged in the space above soft gum tube 61 in oil well casing flow to oil well casing through outside admission chamber and annular space and is arranged in space below soft gum tube 61, the oil well casing be positioned at below soft gum tube 61 is rinsed, realize well-flushing.
Deblocking process: the invariant position keeping lower contact 3, top connection 2 is upwards lifted by Artificial Control, upper fluid cylinder 71 is subject to power upwards, when power is upwards enough large, second pin is cut off, and top connection 2 drives upper fluid cylinder 71 and cone 51 together to move upward, and the distance between cone 51 and retaining overcoat 43 increases until return to initial distance when packer does not use, centralizer body 52, soft gum tube 61 are all separated with the inwall of oil well casing and bounce back to unpressed state, thus realize deblocking.
Pressure leak process: in deblocking process, after the second pin is cut off, upper fluid cylinder 71 moves upward under the drive of top connection 2, when the second through hole on upper fluid cylinder 71 passes by first piston 42 upper surface, oil well casing is communicated with central tube 1 inside by second through hole, realizes central tube 1 pressure release.
In sum, the utility model has following beneficial effect:
The utility model is by arranging righting mechanism, the front opening righting mechanism set, righting mechanism is fitted tightly with the inwall of oil well casing, can ensure that packer is positioned at the center of oil well casing, and righting mechanism of the present utility model can be opened flexibly and effectively bounce back, be convenient to remove, ensure that lift pipe string operation can normally be carried out.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those of ordinary skill in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (10)
1. a righting type packer, it is characterized in that, described righting type packer comprises central tube, top connection, lower contact, deblocking driving mechanism, righting mechanism, sealing mechanism and set driving mechanism, the upper end of described central tube is connected with described top connection, the lower end of described central tube is connected with described lower contact, described deblocking driving mechanism, described righting mechanism, described sealing mechanism, the described driving mechanism that sets connects in turn and is sleeved on described central tube, described deblocking driving mechanism is fixedly connected with described top connection, the described driving mechanism that sets is fixedly connected with described lower contact,
Described righting mechanism comprises cone, centralizer body and centralizer body seat, along direction from top to bottom, the conical surface of described cone draws near the direction of described central tube, the upper end of described cone is fixedly connected with described deblocking driving mechanism, the upper end of described centralizer body is fitted in the lower end of described cone, described righting physical efficiency moves up and down along the conical surface of described cone, the lower end of described centralizer body to be inserted in described centralizer body seat and is fixedly connected with described centralizer body seat, and the lower end of described centralizer body seat is connected with described sealing mechanism.
2. righting type packer according to claim 1, it is characterized in that, the described driving mechanism that sets comprises lower fluid cylinder, first piston, retaining overcoat, rubber cylinder pressing cap and fixed piston, described fixed piston fixed cover is located on described central tube, the upper end of described rubber cylinder pressing cap is against described sealing mechanism, the lower upper end of fluid cylinder and the upper end of described retaining overcoat described in the lower end abutment of described rubber cylinder pressing cap, and described rubber cylinder pressing cap is connected by the first pin with described fixed piston, the lower end of described lower fluid cylinder is fixedly connected with described lower contact, the lower end of described retaining overcoat is connected with described first piston, described first piston is set on described central tube, and the inwall of the outside of described first piston and described lower fluid cylinder fits tightly, described first piston can slide up and down along described central tube, along direction from top to bottom, the lower end of described first piston is provided with the first inclined-plane tilted by the outside of first piston described in side direction in described first piston, the outer wall of described first inclined-plane and described central tube, the upper end of described lower contact forms lower admission chamber, corresponding described lower admission chamber, described central tube is provided with lower inlet opening.
3. righting type packer according to claim 2, it is characterized in that, described sealing mechanism comprises soft gum tube, two ebonite cylinders, two spacer rings and packing element core pipe, described packing element core pipe box is located at outside described central tube, between described packing element core pipe and described central tube, there is annular space, and the described upper end of packing element core pipe and the inner side snapping of described cone, fixed piston described in the lower end abutment of described packing element core pipe, described soft gum tube, two described ebonite cylinders, two described spacer rings are all set on described packing element core pipe, and two described ebonite cylinders are separately positioned on the top of described soft gum tube and the below of described soft gum tube, described spacer ring is provided with between each described ebonite cylinder and described soft gum tube, be positioned at the lower end of upper end against described centralizer body seat of the described ebonite cylinder of the top of described soft gum tube, rubber cylinder pressing cap described in the lower end abutment being positioned at the described ebonite cylinder of the below of described soft gum tube.
4. righting type packer according to claim 3, it is characterized in that, described rubber cylinder pressing cap is provided with at least one first pin hole and at least one first-class through hole, in each described first pin hole, described first pin is all installed, the tube wall of the lower end of described packing element core pipe is provided with through hole corresponding with each described first-class through hole respectively, each described first-class through hole all can be communicated with corresponding described through hole.
5. righting type packer according to claim 1, it is characterized in that, described deblocking driving mechanism comprises fluid cylinder and the second piston, described upper fluid cylinder is set in the outside of described central tube, and the upper end of described upper fluid cylinder is fixedly connected with described top connection, the lower end of described upper fluid cylinder is fixedly connected with described cone, described second piston bush is located on described central tube, and described second piston is fixedly connected with the upper end of described central tube, the outside of described second piston and the inwall of described upper fluid cylinder fit tightly, described second piston is connected by the second pin with described upper fluid cylinder.
6. righting type packer according to claim 5, it is characterized in that, described upper fluid cylinder is provided with at least one second pin hole and at least one second through hole, all be provided with described second pin in each described second pin hole, each described second through hole all can be communicated with the inside of described central tube.
7. righting type packer according to claim 5, it is characterized in that, described righting type packer also comprises well-flushing mechanism, described well-flushing mechanism comprises flushing valve, dummy piston and connector, described dummy piston is set on described central tube, described flushing valve is set on described dummy piston, described dummy piston, described flushing valve is all on described between fluid cylinder and described central tube, and the inwall of the outside of described flushing valve and described upper fluid cylinder fits tightly, described flushing valve and described dummy piston can move up and down along described central tube, described connector is on described between fluid cylinder and described cone, be fixedly connected with the inwall of described upper fluid cylinder outside the upper end of described connector, the lower end outside of described connector is fixedly connected with described cone, connector described in the lower end abutment of described flushing valve also fits tightly with described connector, along direction from top to bottom, described flushing valve is provided with the second inclined-plane tilted by the inner side of flushing valve described in the lateral of described flushing valve, described second inclined-plane, the upper end of described connector, the inwall of described upper fluid cylinder forms outside admission chamber, corresponding described outside admission chamber, described upper fluid cylinder is provided with outside inlet opening.
8. righting type packer according to claim 7, it is characterized in that, upper admission chamber is formed between the upper end of described upper fluid cylinder, described central tube, the lower end of described second piston, the upper end of described flushing valve, described dummy piston, corresponding described upper admission chamber, described central tube is provided with inlet opening.
9. righting type packer according to claim 2, it is characterized in that, described righting type packer also comprises retaining mechanism, described retaining mechanism comprises connecting ring and retaining ring, described connecting ring is set on described central tube, and described connecting ring comprises epimere pipe, stage casing pipe and hypomere pipe, the external diameter of described stage casing pipe is greater than the external diameter of described epimere pipe, the external diameter of described hypomere pipe is greater than the external diameter of described stage casing pipe, the external diameter of described hypomere pipe is identical with the external diameter diameter of the lower end of described fixed piston, described epimere pipe is fixedly connected with the lower end inside of described fixed piston, described retaining ring set is located on the pipe of described stage casing, and described retaining ring is between the lower surface of described fixed piston and described hypomere pipe.
10. righting type packer according to claim 9, it is characterized in that, be provided with gap between the lower end outside of described fixed piston and the inwall of described retaining overcoat, between the outside of described retaining ring and the inwall of described retaining overcoat, and the inner side of the outside of described retaining ring and described retaining overcoat is provided with the screw thread that can cooperatively interact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420696391.0U CN204283314U (en) | 2014-11-19 | 2014-11-19 | Righting type packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420696391.0U CN204283314U (en) | 2014-11-19 | 2014-11-19 | Righting type packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204283314U true CN204283314U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420696391.0U Expired - Fee Related CN204283314U (en) | 2014-11-19 | 2014-11-19 | Righting type packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204283314U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298434A (en) * | 2015-11-23 | 2016-02-03 | 天鼎联创密封技术（北京）有限公司 | Rubber barrel capable of resisting high-temperature steam, compressed type packer and sealing method |
| CN110031264A (en) * | 2019-05-10 | 2019-07-19 | 中海油田服务股份有限公司 | A kind of backup sampling system and its set method |
-
2014
- 2014-11-19 CN CN201420696391.0U patent/CN204283314U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298434A (en) * | 2015-11-23 | 2016-02-03 | 天鼎联创密封技术（北京）有限公司 | Rubber barrel capable of resisting high-temperature steam, compressed type packer and sealing method |
| CN110031264A (en) * | 2019-05-10 | 2019-07-19 | 中海油田服务股份有限公司 | A kind of backup sampling system and its set method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 |