CN105178906A - Layered steam driving packer with combination effect - Google Patents
Layered steam driving packer with combination effect Download PDFInfo
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- CN105178906A CN105178906A CN201510631845.5A CN201510631845A CN105178906A CN 105178906 A CN105178906 A CN 105178906A CN 201510631845 A CN201510631845 A CN 201510631845A CN 105178906 A CN105178906 A CN 105178906A
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- central tube
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Abstract
The invention provides a layered steam driving packer with a combination effect. The layered steam driving packer with the combination effect comprises a central tube, an outer central tube and an expanding portion, wherein an upper joint and a lower joint are correspondingly connected to two ends of the central tube through outer threads; a pressure transferring hole is formed in a side wall of the central tube; the outer central tube sleeves the central tube; the upper end of the outer central tube can be connected with the outer side surface of the upper joint in a separating mode; an adjusting ring and a sealing rubber barrel sleeve the outer side of the outer central tube; the expanding portion comprises an expanding inner barrel; the expanding inner barrel sleeves the outer central tube; an expanding jacket sleeves the expanding inner barrel; a sealing cavity is formed between the expanding inner barrel and the expanding jacket and is filled with expanding liquid; the upper end of the expanding jacket is in contact with the lower end of a sealing rubber barrel; and a locking and retaining mechanism is arranged between the expanding inner barrel and the outer central tube. During liquid injection, a pushing portion which can push the expanding portion to move upwards sleeves the central tube, is adjacent to the lower side of the expanding portion, and is hermetically connected with the outer side surface of the lower joint, a sealing ring cavity is formed between the pushing portion and the outer side surface of the lower joint and is connected with the pressure transferring hole, and liquid can be injected into the sealing ring cavity.
Description
Technical field
The invention belongs to field of petroleum exploitation, the compound action layering vapour in particular to a kind of viscous crude, super-viscous oil steam flooding drives packer.
Background technology
Liaohe Oilfield Heavy Crude, the measure of super-viscous oil block production practice mainly adopt the mode such as steam flooding, steam soak, and steam flooding is that Liaohe Oilfield Heavy Crude exploits the important mode of production.Due to steam flooding process well long construction period, well temperature is high, steam flooding process well underground working is severe, well temperature is high, for ensureing between tubing string and sleeve pipe in annular space altering leakage on steam is not, packer is needed to possess good sealing performance, and steam injects for a long time, to seal heatproof, sealing performance requires very high, adopt rational setting mode particularly important, the setting mode of hydraulic base sealed or heating power that the many employings of existing setting mode are single, along with the intensification gradually of recovery percent, the mode of production sealing effectiveness that conventional general steam flooding and successively vapour drive is bad, not can solve interlayer difference large, the problems such as interlayer interference.
In view of this, the present inventor, according to the Production design experience being engaged in this area and association area for many years, develops a kind of compound action layering vapour and drives packer, to solving prior art Problems existing.
Summary of the invention
The object of the invention is to be to provide a kind of compound action layering vapour to drive packer, adopt compound action mode to carry out setting, good sealing effect, heat resisting and pressure resisting is strong, is convenient to deblocking, overcomes the defect of prior art.
For this reason, the present invention proposes a kind of compound action layering vapour and drives packer, and it comprises:
One central tube, its two ends are connected with top connection and lower contact by external screw thread correspondence, and its sidewall is provided with pressure transmission hole;
One exterior central tube, it is set on described central tube, what its upper end can be separated by a portion of cutting off is connected with the lateral surface of described top connection, adjustable ring and cartridge is arranged with outside described exterior central tube, cut off the outside in portion described in the upper end of described adjustable ring is bolted in, its lower end contacts with the upper end of described cartridge;
One dilation, comprise one and be set in expansion inner core on described exterior central tube, described expansion inner core is arranged with expansion overcoat, an annular seal space is formed between described expansion inner core and expansion overcoat, vaporization of being heated is filled with to promote to put the inflation fluid moved outside described expansion in described annular seal space, the upper end of described expansion overcoat contacts with the lower end of described cartridge, is provided with a locking stopping mechanism that can prevent described expansion inner core from moving down between described expansion inner core and described exterior central tube;
One can promote the pushing portion that described dilation moves when fluid injection, it is set on described central tube, and adjacent to the downside of described dilation, seal between described pushing portion and the lateral surface of lower contact and touch, be provided with a sealing ring cavity injected for liquid between the two, described sealing ring cavity is connected with described pressure transmission hole.
Compound action layering vapour as above drives packer, wherein, described locking stopping mechanism includes a lock sleeve, one lock dog and a retaining ring, described lock sleeve is set on described exterior central tube, its lateral surface is provided with the zigzag retaining tooth that can lock together with described retaining ring, described expansion inner core is set on described lock sleeve, described retaining ring is embedded on the inwall of described expansion inner core lower end, the bottom of described lock dog is embedded the groove place formed on described exterior central tube sidewall, its outer end is embedded the draw-in groove place formed at the medial surface of described lock sleeve, wherein, the lateral surface of described central tube is separately provided with a groove, described groove is adjacent to the downside of described lock dog, when described central tube moves, described lock dog can be placed in described groove.
Compound action layering vapour as above drives packer, wherein, the lateral surface of described expansion inner core lower end is convexly equipped with an outer portion, described outer portion is mutually closely connected with the medial surface of described expansion overcoat, the upper end edge of described expansion overcoat extends radially inwardly and is formed with an internal ring portion, the front end face of described internal ring portion contacts with the lower end of described cartridge, thereafter end face is mutually closely connected with the upper end end face of described expansion inner core, wherein, the inwall of described expansion overcoat is separately convexly equipped with a stripper loop, described stripper loop is mutually closely connected with the lateral surface of described expansion inner core, the lateral surface of described expansion inner core, the medial surface of described expansion overcoat, described outer portion and stripper loop enclose and are formed with annular seal space described in.
Compound action layering vapour as above drives packer, wherein, the described portion of cutting off includes a shear sleeve and the first shear pin, described shear sleeve includes the first ring portion and the second ring portion from top to bottom, the internal diameter of described first ring portion is greater than the internal diameter of described second ring portion, it is set in outside described top connection, and be connected with described top connection by described first shear pin, described second ring portion sealing shroud is located on described central tube, the upper end of described adjustable ring is then socketed in outside described first ring portion, the upper end of described exterior central tube is connected by the lateral surface of internal thread with described second ring portion.
Compound action layering vapour as above drives packer, wherein, an annular space is formed between described exterior central tube and described central tube, described annular space is adjacent on the downside of the second ring portion of described shear sleeve, a pressure ring and a joint ring is placed with, on described pressure ring and the closely connected lateral surface being set in described central tube of joint ring in described annular space.
Compound action layering vapour as above drives packer, wherein, described pushing portion comprises and is set in support set on described central tube and piston from top to bottom successively, the upper end of described support set is connected to the lower end of described expansion inner core and expansion overcoat, its lower end is socketed on the upper end of described piston, described piston is mutually closely connected with the lateral surface of described central tube, the ring ear sealing shroud that the lateral surface of its lower end extends to form vertically is located on the lateral surface of described lower contact, the upper surface of described piston lower surface and described lower contact is adjacent, be formed with the described sealing ring cavity be connected with described pressure transmission hole between the two.
Compound action layering vapour as above drives packer, and wherein, the lateral surface of described lower contact is separately socketed with a shearing ring, and the lower end of described ring ear is set on described shearing ring, and is connected with described shearing ring by the second shear pin.
Compound action layering vapour as above drives packer, and wherein, the lateral surface of described lower contact is embedded with seal washer respectively at the medial surface of the position contacted with described ring ear and described piston.
Compound action layering vapour as above drives packer, and wherein, the external diameter that described compound action layering vapour drives packer is 152mm, and its internal diameter is 62mm.
Compound action layering vapour provided by the invention drives packer, compound action mode is adopted to carry out setting, avoid the shortcoming that single setting mode exists, good sealing effect, heat resisting and pressure resisting is strong, owing to not having anchor mechanism, deblocking institution secure is reliable, be convenient to deblocking, good sealing effectiveness can be reached, possess and be constructed into power preferably.
Compound action layering vapour provided by the invention drives packer, is applicable to hollow layering vapour and drives the technique such as technique and heavy crude heat extraction steam flooding, steam soak, be applicable to the steam flooding of the highest well Wen Keda 350 DEG C, can withstand voltage 18MPa, is with a wide range of applications.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1 is the composition structural representation that compound action layering vapour of the present invention drives packer.
Critical element label declaration:
1 central tube 101 pressure transmission hole
102 groove 11 top connections
12 lower contact 13 first shear pins
14 pressure ring 15 joint rings
16 shearing ring 17 second shear pins
2 shear sleeve 21 first ring portions
22 second ring portion 3 exterior central tubes
31 adjustable ring 32 cartridge
4 dilations 41 expand inner core
411 outer portion 42 expand overcoat
421 internal ring portion 422 stripper loops
51 lock sleeve 511 draw-in grooves
52 lock dog 53 retaining rings
6 pushing portions 60 seal ring cavity
61 support set 62 pistons
621 ring ear H annular seal spaces
Detailed description of the invention
The present invention proposes a kind of compound action layering vapour and drives packer, and it comprises: a central tube, and its two ends are connected with top connection and lower contact by external screw thread correspondence, and its sidewall is provided with pressure transmission hole; One exterior central tube, it is set on described central tube, what its upper end can be separated by a portion of cutting off is connected with the lateral surface of described top connection, adjustable ring and cartridge is arranged with outside described exterior central tube, cut off the outside in portion described in the upper end of described adjustable ring is bolted in, its lower end contacts with the upper end of described cartridge; One dilation, comprise one and be set in expansion inner core on described exterior central tube, described expansion inner core is arranged with expansion overcoat, an annular seal space is formed between described expansion inner core and expansion overcoat, vaporization of being heated is filled with to promote to put the inflation fluid moved outside described expansion in described annular seal space, the upper end of described expansion overcoat contacts with the lower end of described cartridge, is provided with a locking stopping mechanism that can prevent described expansion inner core from moving down between described expansion inner core and described exterior central tube; One can promote the pushing portion that described dilation moves when fluid injection, it is set on described central tube, and adjacent to the downside of described dilation, seal between described pushing portion and the lateral surface of lower contact and touch, be provided with a sealing ring cavity injected for liquid between the two, described sealing ring cavity is connected with described pressure transmission hole.
Compound action layering vapour of the present invention drives packer, and adopt compound action mode to carry out setting, good sealing effect, heat resisting and pressure resisting is strong, is convenient to deblocking.
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, below in conjunction with accompanying drawing and preferred embodiment, the detailed description of the invention of the composition structural representation of packer, structure, feature and effect are driven to the compound action layering vapour that the present invention proposes, is described in detail as follows.In addition, by the explanation of detailed description of the invention, when can to the present invention for the technological means reaching predetermined object and take and effect are goed deep into concrete understanding more, but institute's accompanying drawing be only to provide with reference to and use is described, is not used for being limited the present invention.
Fig. 1 is the composition structural representation that compound action layering vapour of the present invention drives packer.
As shown in Figure 1, the compound action layering vapour that the present invention proposes drives packer, and it comprises:
One central tube 1, its two ends are connected with top connection 11 and lower contact 12 by external screw thread correspondence, and the sidewall of described central tube 1 is provided with pressure transmission hole 101;
One exterior central tube 3, be set on described central tube 1, what its upper end can be separated by a portion of cutting off is connected with the lateral surface of described top connection 11, adjustable ring 31 and cartridge 32 is arranged with outside described exterior central tube 3, the outside in portion is cut off described in the upper end of described adjustable ring 31 is bolted in, its lower end contacts with the upper end of described cartridge 32, wherein, utilize adjustable ring 31 and the relation that is spirally connected of cutting off portion, its position can be adjusted, thus regulate the tightness degree of the Contact of itself and cartridge 32 as required, in addition, sealing packing element 32 preferably adopts soft graphite to make,
One dilation 4, comprise one and be set in expansion inner core 41 on described exterior central tube 3, described expansion inner core 41 is arranged with an expansion overcoat 42, an annular seal space is formed between described expansion inner core 41 and expansion overcoat 42, vaporization of being heated is filled with to promote the inflation fluid (not shown) that described expansion overcoat 42 moves in described annular seal space, the upper end of described expansion overcoat 42 contacts with the lower end of described cartridge 32, is provided with a locking stopping mechanism that can prevent described expansion inner core 41 from moving down between described expansion inner core 41 and described exterior central tube 3;
One can promote the pushing portion 6 that described dilation 4 moves when fluid injection, it is set on described central tube 1, and adjacent to the downside of described dilation 4, seal between described pushing portion 6 and the lateral surface of lower contact 12 and touch, be provided with a sealing ring cavity 60 injected for liquid between the two, described sealing ring cavity 60 is connected with described pressure transmission hole 101.When by the inner chamber of described central tube 1 and pressure transmission hole 101 in described sealing ring cavity 60 during fluid injection, liquid fail to be convened for lack of a quorum sealing ring cavity 60 in hydrodynamic force, and under the effect of hydraulic coupling, promote the related described dilation 4 of this pushing portion 6 moves by the inwall sealing ring cavity 60, to compress described cartridge 32, realize with the sealing of down-hole casing and set operation.
Thus, when in the inner chamber to described central tube 1, fluid injection is suppressed, liquid stream enters in described sealing ring cavity from described pressure transmission hole 101, under the promotion of hydraulic coupling, the expansion inner core 41 of described pushing portion promotion dilation 4 and expansion overcoat 42 move, on the one hand, described expansion overcoat 42 upwards cartridge 32 described in pushing tow compresses, make described cartridge 32 and the inwall of down-hole casing set, on the other hand, by arranging locking stopping mechanism, after stopping fluid injection being suppressed, described dilation 4 can be avoided to move down under the propulsive thrust effect of cartridge 32, thus make to set reliably.
Preferably, described locking stopping mechanism includes a lock sleeve 51, one lock dog 52 and a retaining ring 53, described lock sleeve 51 is set on described exterior central tube 2, its lateral surface is provided with the zigzag retaining tooth (not indicating in figure) that can lock together with described retaining ring 53, described expansion inner core 41 is set on described lock sleeve 51, described retaining ring 53 is embedded on the inwall of described expansion inner core 41 lower end, when described retaining ring 53 is with after described expansion inner core 41 moves, can be sealed with adjacent zigzag retaining tooth phase clip on the downside of it, overcome the back stretch that described cartridge 32 produces described dilation 4, thus avoid described expansion inner core 41 to move down, cartridge 32 is made to be in the state of setting all the time upon compression,
The bottom of described lock dog 52 is embedded the groove place formed on described exterior central tube 3 sidewall, its outer end is embedded draw-in groove 511 place formed at the medial surface of described lock sleeve 51, make mutually locate between described lock sleeve 51 and described exterior central tube 23, wherein, the lateral surface of described central tube 1 is separately provided with a groove 102, described groove 102 is adjacent to the downside of described lock dog 53, when described central tube 1 moves, described lock dog 53 can be placed in described groove 102, and depart from the draw-in groove 511 of described lock sleeve 51, make to remove mutual positioning states between described lock sleeve 51 and described exterior central tube 3, can move down relative to described central tube 3.
Refer to Fig. 1, the lateral surface of described expansion inner core 41 lower end is convexly equipped with an outer portion 411, described outer portion 411 is mutually closely connected with the medial surface of described expansion overcoat 42, the upper end edge of described expansion overcoat 42 extends radially inwardly and is formed with an internal ring portion 421, the front end face of described internal ring portion 421 contacts with the lower end of described cartridge 32, thereafter end face is mutually closely connected with the upper end end face of described expansion inner core 41, wherein, the inwall of described expansion overcoat 42 is separately convexly equipped with a stripper loop 422, described stripper loop 422 is mutually closely connected with the lateral surface of described expansion inner core 41, the lateral surface of described expansion inner core 41, the medial surface of described expansion overcoat 42, described outer portion 411 and stripper loop 422 enclose and are formed with annular seal space H described in, in other words, the lateral surface of described expansion inner core 41, the medial surface of described expansion overcoat 42, described outer portion 411 and internal ring portion 421 enclose and are formed with a ring cavity, by arranging described stripper loop 422, the part of described ring cavity between described stripper loop 422 and described outer portion 411 is made to form described annular seal space H.In use, as for the particular location of this stripper loop 422 at described expansion overcoat 42 medial surface, can more the annular seal space H of actual needs volume size and determine, when described expansion overcoat 42 moves, can not flow out from the upper end of expansion inner core 41 as long as meet inflation fluid.
As shown in the figure, the described portion of cutting off includes shear sleeve 2 and first shear pin 13, described shear sleeve 2 includes the first ring portion 21 and the second ring portion 22 from top to bottom, the internal diameter of described first ring portion 21 is greater than the internal diameter of described second ring portion 22, it is set in outside described top connection 11, and be connected with described top connection 11 by described first shear pin 13, described second ring portion 22 sealing shroud is located on described central tube 1, the upper end of described adjustable ring 31 is then socketed in outside described first ring portion 21, the upper end of described exterior central tube 3 is connected by the lateral surface of internal thread with described second ring portion 22.As described in Figure, preferably the lateral surface of shear sleeve 2 upwards extends to form described first ring portion 21 vertically, and its medial surface extends to form described second ring portion 22 vertically downwards.
Further, an annular space is formed between described exterior central tube 3 and described central tube 1, described annular space is adjacent on the downside of the second ring portion 22 of described shear sleeve 2, pressure ring 14 and a joint ring 15 is placed with, on described pressure ring 14 and the closely connected lateral surface being set in described central tube 1 of joint ring 15 in described annular space.When fluid injection is suppressed; by arranging described joint ring 15, the sealing between central tube 1 and exterior central tube 2 can be improved, avoiding liquid to flow through gap leakage between the two in down-hole annular; described pressure ring 14, then for the protection of described joint ring 15, prevents its damage when assembling.
Refer to Fig. 1, described pushing portion 6 comprises and is set in support set 61 on described central tube 1 and piston 62 from top to bottom successively, the upper end of described support set 61 is connected to the lower end of described expansion inner core 41 and expansion overcoat 42, its lower end is socketed on the upper end of described piston 62, described piston 62 is mutually closely connected with the lateral surface of described central tube 1, ring ear 621 sealing shroud that the lateral surface of its lower end extends to form vertically is located on the lateral surface of described lower contact 11, the upper surface of described piston 62 lower surface and described lower contact 12 is adjacent, be formed with the described sealing ring cavity 60 be connected with described pressure transmission hole between the two, the internal perisporium of described piston 62 lower end is formed with the described sealing ring cavity 60 be connected with described pressure transmission hole 101.Wherein, in the illustrated embodiment, in order to improve hydraulic drive effect, further chamfering being set at the medial surface of described piston 62 lower end, being not limited thereto in practical application, such as, also directly on the medial surface of described piston 62 lower end, ring groove etc. can be set further, as long as it is up to promote described piston 62 when can better meet fluid injection, therefore, its specific constructive form can be decided according to the actual requirements, and is specifically not construed as limiting at this.
Wherein, the lateral surface of described lower contact 12 is separately socketed with a shearing ring 16, the lower end of described ring ear 621 is set on described shearing ring 16, and be connected with described shearing ring 16 by the second shear pin 17, for to the location of described piston 62 when original state, when the effect of described piston 62 by hydraulic coupling, described second shear pin 17 can be cut off and up.
For improving sealing performance, the lateral surface of described lower contact 12 is embedded with seal washer (not shown) respectively at the medial surface of the position contacted with described ring ear 621 and described piston 62.Wherein, the external diameter that preferably this compound action layering vapour drives packer is 152mm (such as at described top connection, shearing ring place), and its internal diameter is 62mm, such as in central tube, lower contact place.
Refer to Fig. 1, compound action layering vapour provided by the invention drives packer, be connected with other process pipe string and lower going-into-well under after, its specific works process is as follows:
First, by well head to fluid injection in central tube 1, liquid stream enters in described sealing ring cavity 60 from described pressure transmission hole 101, under the promotion of hydraulic coupling, described piston 62 drives support set 61 up, and promote the expansion inner core 41 of dilation 4 and expansion overcoat 42 move, again by described expansion overcoat 42 upwards cartridge 32 described in pushing tow compress, described cartridge 32 is completed in down-hole tentatively set, wherein, utilize the mutual clip of described lock sleeve 51 and retaining ring 52, avoid described dilation 4 to move down under the propulsive thrust effect of cartridge 32, thus make to set reliably,
Subsequently, steam injection operation is carried out to down-hole, temperature in wellbore can raise gradually, now, the inflation fluid be poured in advance in described annular seal space H can be vaporized, and because expansion inner core 41 relies on retaining ring 53 to be locked on lock sleeve 51, the inflation fluid after vaporization can promote described expansion overcoat 42 moves, further compression seal packing element 32, realizes compensation setting.
After underground work completes, stop to down-hole steam injection, along with the reduction of downhole temperature, again liquid state is converted into after the inflation fluid heat release of vaporization, thus eliminate expansion overcoat 42 thrust, expansion overcoat 42 is suitably moved down under the effect of cartridge 32, and described cartridge 32 is returned in down-hole and initial tentatively sets state; Subsequently, by put on joint 11 and make central tube 1 up, because cartridge 32 is tightly squeezed on the inwall of down-hole casing, each parts are relatively motionless, and described first shear pin 13 is then cut off; Continuation is carried central tube 1, when described groove 102 moves to described lock dog 52 bottom, described lock dog 52 departs from the draw-in groove 511 of described lock sleeve 51 and falls in this groove 102, make to remove mutual positioning states between described lock sleeve 51 and described exterior central tube 3, now, under the effect of the back stretch of cartridge 32, expansion overcoat 42, expansion inner core 41 and lock sleeve 51 entirety can be promoted move down, and reply as original state, thus remove with down-hole casing set state, finally, the present invention is taken out from down-hole.
The foregoing is only the schematic detailed description of the invention of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.
Claims (10)
1. compound action layering vapour drives a packer, it is characterized in that, described compound action layering vapour drives packer and comprises:
One central tube, its two ends are connected with top connection and lower contact by external screw thread correspondence, and its sidewall is provided with pressure transmission hole;
One exterior central tube, it is set on described central tube, what its upper end can be separated by a portion of cutting off is connected with the lateral surface of described top connection, adjustable ring and cartridge is arranged with outside described exterior central tube, cut off the outside in portion described in the upper end of described adjustable ring is bolted in, its lower end contacts with the upper end of described cartridge;
One dilation, comprise one and be set in expansion inner core on described exterior central tube, described expansion inner core is arranged with expansion overcoat, an annular seal space is formed between described expansion inner core and expansion overcoat, vaporization of being heated is filled with to promote to put the inflation fluid moved outside described expansion in described annular seal space, the upper end of described expansion overcoat contacts with the lower end of described cartridge, is provided with a locking stopping mechanism that can prevent described expansion inner core from moving down between described expansion inner core and described exterior central tube;
One can promote the pushing portion that described dilation moves when fluid injection, it is set on described central tube, and adjacent to the downside of described dilation, seal between described pushing portion and the lateral surface of lower contact and touch, be provided with a sealing ring cavity injected for liquid between the two, described sealing ring cavity is connected with described pressure transmission hole.
2. compound action layering vapour as claimed in claim 1 drives packer, it is characterized in that, described locking stopping mechanism includes a lock sleeve, one lock dog and a retaining ring, described lock sleeve is set on described exterior central tube, its lateral surface is provided with the zigzag retaining tooth that can lock together with described retaining ring, described expansion inner core is set on described lock sleeve, described retaining ring is embedded on the inwall of described expansion inner core lower end, the bottom of described lock dog is embedded the groove place formed on described exterior central tube sidewall, its outer end is embedded the draw-in groove place formed at the medial surface of described lock sleeve, wherein, the lateral surface of described central tube is separately provided with a groove, described groove is adjacent to the downside of described lock dog, when described central tube moves, described lock dog can be placed in described groove.
3. compound action layering vapour as claimed in claim 2 drives packer, it is characterized in that, the lateral surface of described expansion inner core lower end is convexly equipped with an outer portion, described outer portion is mutually closely connected with the medial surface of described expansion overcoat, the upper end edge of described expansion overcoat extends radially inwardly and is formed with an internal ring portion, the front end face of described internal ring portion contacts with the lower end of described cartridge, thereafter end face is mutually closely connected with the upper end end face of described expansion inner core, wherein, the inwall of described expansion overcoat is separately convexly equipped with a stripper loop, described stripper loop is mutually closely connected with the lateral surface of described expansion inner core, the lateral surface of described expansion inner core, the medial surface of described expansion overcoat, described outer portion and stripper loop enclose and are formed with annular seal space described in.
4. compound action layering vapour as claimed in claim 1 drives packer, it is characterized in that, the lateral surface of described expansion inner core lower end is convexly equipped with an outer portion, described outer portion is mutually closely connected with the medial surface of described expansion overcoat, the upper end edge of described expansion overcoat extends radially inwardly and is formed with an internal ring portion, the front end face of described internal ring portion contacts with the lower end of described cartridge, thereafter end face is mutually closely connected with the upper end end face of described expansion inner core, wherein, the inwall of described expansion overcoat is separately convexly equipped with a stripper loop, described stripper loop is mutually closely connected with the lateral surface of described expansion inner core, the lateral surface of described expansion inner core, the medial surface of described expansion overcoat, described outer portion and stripper loop enclose and are formed with annular seal space described in.
5. the compound action layering vapour as described in any one of Claims 1-4 drives packer, it is characterized in that, the described portion of cutting off includes a shear sleeve and the first shear pin, described shear sleeve includes the first ring portion and the second ring portion from top to bottom, the internal diameter of described first ring portion is greater than the internal diameter of described second ring portion, it is set in outside described top connection, and be connected with described top connection by described first shear pin, described second ring portion sealing shroud is located on described central tube, the upper end of described adjustable ring is then socketed in outside described first ring portion, the upper end of described exterior central tube is connected by the lateral surface of internal thread with described second ring portion.
6. compound action layering vapour as claimed in claim 5 drives packer, it is characterized in that, an annular space is formed between described exterior central tube and described central tube, described annular space is adjacent on the downside of the second ring portion of described shear sleeve, a pressure ring and a joint ring is placed with, on described pressure ring and the closely connected lateral surface being set in described central tube of joint ring in described annular space.
7. as claim 1, 2, compound action layering vapour described in 3 or 6 drives packer, it is characterized in that, described pushing portion comprises and is set in support set on described central tube and piston from top to bottom successively, the upper end of described support set is connected to the lower end of described expansion inner core and expansion overcoat, its lower end is socketed on the upper end of described piston, described piston is mutually closely connected with the lateral surface of described central tube, the ring ear sealing shroud that the lateral surface of its lower end extends to form vertically is located on the lateral surface of described lower contact, the upper surface of described piston lower surface and described lower contact is adjacent, be formed with the described sealing ring cavity be connected with described pressure transmission hole between the two.
8. compound action layering vapour as claimed in claim 7 drives packer, and it is characterized in that, the lateral surface of described lower contact is separately socketed with a shearing ring, and the lower end of described ring ear is set on described shearing ring, and is connected with described shearing ring by the second shear pin.
9. compound action layering vapour as claimed in claim 8 drives packer, and it is characterized in that, the lateral surface of described lower contact is embedded with seal washer respectively at the medial surface of the position contacted with described ring ear and described piston.
10. the compound action layering vapour as described in claim 1 or 9 drives packer, it is characterized in that, the external diameter that described compound action layering vapour drives packer is 152mm, and its internal diameter is 62mm.
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| CN201510631845.5A CN105178906B (en) | 2015-09-29 | 2015-09-29 | Compound action layering vapour drives packer |
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| CN201510631845.5A CN105178906B (en) | 2015-09-29 | 2015-09-29 | Compound action layering vapour drives packer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437537A (en) * | 2016-09-06 | 2017-02-22 | 中国石油化工股份有限公司 | Oil pumping tubular column with hot-washing paraffin removal function |
| CN110043217A (en) * | 2019-05-14 | 2019-07-23 | 淮安市井神钻采机具有限公司 | A kind of more sealings are corrosion-resistant to look for leak stopping one production packer |
| CN110952967A (en) * | 2018-09-27 | 2020-04-03 | 中国石油天然气股份有限公司 | Thickened oil recovery method |
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| CN103806861A (en) * | 2013-11-04 | 2014-05-21 | 中国石油天然气股份有限公司 | Cold and hot double-acting packer |
| CN205025420U (en) * | 2015-09-29 | 2016-02-10 | 中国石油天然气股份有限公司 | Combination effect layering vapour drives packer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437537A (en) * | 2016-09-06 | 2017-02-22 | 中国石油化工股份有限公司 | Oil pumping tubular column with hot-washing paraffin removal function |
| CN106437537B (en) * | 2016-09-06 | 2019-04-26 | 中国石油化工股份有限公司 | A kind of pumping pipe string with hot-washing wax remover function |
| CN110952967A (en) * | 2018-09-27 | 2020-04-03 | 中国石油天然气股份有限公司 | Thickened oil recovery method |
| CN110043217A (en) * | 2019-05-14 | 2019-07-23 | 淮安市井神钻采机具有限公司 | A kind of more sealings are corrosion-resistant to look for leak stopping one production packer |
| CN110043217B (en) * | 2019-05-14 | 2021-03-05 | 淮安市井神钻采机具有限公司 | Multi-seal corrosion-resistant finding and plugging integrated oil extraction packer |
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| CN105178906B (en) | 2017-10-17 |
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