CN207686669U - High temperature resistant water blockoff bridge plug and its Production through Water Plugging tubing string - Google Patents

Abstract

The utility model discloses a kind of high temperature resistant water blockoff bridge plug and its Production through Water Plugging tubing string, the high temperature resistant water blockoff bridge plug include：Central tube sets unit, anchor unit, sealing unit and unit of giving up；The unit that sets is sheathed on outside the central tube；The tube wall of the central tube be equipped with it is described set that unit communicates go out to press through-hole；The unit that sets can be moved downward to setting position under the central tube internal pressure force effect；The unit of giving up is installed on the upper end of the central tube, and positioned at the top for setting unit；The unit of giving up can be disengaged in described set when unit is moved to setting position with the central tube；The sealing unit and the anchor unit are located at the lower section for setting unit；Described set can first push the anchor unit to be anchored on casing when unit moves down, then the sealing unit is pushed to set.The high temperature resistant water blockoff bridge plug and its Production through Water Plugging tubing string can effectively insulate bottom water-yielding stratum, improve the recovery ratio in oil field.

Description

High temperature resistant water blockoff bridge plug and its Production through Water Plugging tubing string

Technical field

The utility model is related to thickened oil recovery field more particularly to a kind of high temperature resistant water blockoff bridge plugs and its Production through Water Plugging pipe Column.

Background technology

Exploitation via steam injection is an important process of thickened oil recovery at present, with deepening continuously for oilfield exploitation, producing well The phenomenon that bottom is discharged is increasingly severe, causes the liquid water content that lifting comes up higher and higher.Therefore, high temperature is taken to block up bottom water Technological measure improves the recovery ratio in oil field effectively to insulate bottom water-yielding stratum.

Utility model content

In view of the needs of the above-mentioned prior art, the purpose of this utility model is to provide a kind of high temperature resistant water blockoff bridge plug and its stifled Hydromining tubing string improves the recovery ratio in oil field can effectively insulate bottom water-yielding stratum.

In order to achieve the above objectives, the technical solution adopted in the utility model is as follows：

A kind of high temperature resistant water blockoff bridge plug, including：Central tube sets unit, anchor unit, sealing unit and list of giving up Member；

The unit that sets is sheathed on outside the central tube；The tube wall of the central tube is equipped with sets unit phase with described Logical goes out to press through-hole；The unit that sets can be moved downward to setting position under the central tube internal pressure force effect；

The unit of giving up is installed on the upper end of the central tube, and positioned at the top for setting unit；It is described to lose Hand unit can be disengaged in described set when unit is moved to setting position with the central tube；

The sealing unit and the anchor unit are located at the lower section for setting unit；The unit that sets moves down Shi Nengxian pushes the anchor unit to be anchored on casing, then the sealing unit expansion is pushed to set.

Further include being located at the central tube and the retaining mechanism set between unit as preferred embodiment； The retaining mechanism include fixing sleeve be set to the central tube outside locking tube and with it is described set unit movement locking Ring；The locking tube is matched with the retaining ring so that described set unit and be only capable of moving down.

As preferred embodiment, the unit that sets includes the housing being sheathed on outside the central tube, is fixedly connected Packing element upper pressing cap in the housing lower end；The inner wall of the packing element upper pressing cap is fixedly connected with pressure ring；The packing element upper pressing cap Inner wall be equipped with raised step；The raised step forms the holding tank for accommodating the retaining ring with the pressure ring.

As preferred embodiment, the upper end of the locking tube is fixedly connected with connector；The connector is sheathed on Outside the central tube, and the central tube is fixed on by unsealing pin；The lower end of the locking tube, which is connected with, helps pull a cart；The drawing First seal is equipped between set and the central tube.

As preferred embodiment, the unit of giving up includes top connection, inner tube；The upper end of the central tube is sheathed on Outside the lower end of said inner tube, the upper end of said inner tube is fixedly connected with the top connection；The lower end of the top connection be equipped with it is described The matched pawl spring of connector；It is limited by the connector when pawl spring is between the housing and the connector, and It can be disengaged with the connector when the housing is located at the setting position.

As preferred embodiment, the upper end of the central tube is fixedly connected with salvaging pipe；The salvaging pipe is located at institute State the top of connector；The salvaging pipe is sheathed on positioned at said inner tube outside said inner tube；The inner wall for salvaging pipe, which is equipped with, to be beaten Drag for structure.

As preferred embodiment, the sealing unit includes packing element, rubber tube seat；The rubber tube seat is sheathed on the lock Tight pipe is outer；The packing element is sheathed on the lower section outside the rubber tube seat and positioned at the packing element upper pressing cap.

As preferred embodiment, the anchor unit includes cone, slips, slip spider；The cone is fixedly connected The lower section of the rubber tube seat, and positioned at the lower section of the packing element；The inner wall of the cone is equipped with sealed step；The sealed step Second seal is equipped between the lower face of the rubber tube seat；The second seal is sheathed on outside the locking tube；

The slips is between the cone and the slip spider；It is described to help pull a cart equipped with installation through-hole；The position of helping pull a cart Between the slip spider and the central tube；Closing piece is equipped in the installation through-hole；The inner wall of the slip spider is equipped with embedding Enter slot；The closing piece is embedded in the embedded groove to support the slip spider；The outer wall of the central tube is under the closing piece Side is equipped with undergauge position.

As preferred embodiment, the lower end of the packing element upper pressing cap connects the upper of the rubber tube seat by setting pin End.

As preferred embodiment, the central tube is equipped with outer wall step, and the locking tube is equipped with inner wall step；It is described Outer wall step is located at the lower section of the inner wall step, also, the outer diameter of the outer wall step is more than the internal diameter of the inner wall step.

As preferred embodiment, the first seal and the second seal are multiple graphite-seal rings.

A kind of Production through Water Plugging tubing string, including：

Casing；

Oil pipe in described sleeve pipe；The oil pipe is equipped with oil well pump；

As above any high temperature resistant water blockoff bridge plug；The high temperature resistant water blockoff bridge plug is located at the lower section of the oil well pump, The lower section of the high temperature resistant water blockoff bridge plug is equipped with silk plug.

Advantageous effect：

It, can be sequentially suitable by silk plug, high temperature resistant water blockoff bridge plug when in the present embodiment, using the high temperature resistant water blockoff bridge plug The water-yielding stratum of sequence G.I.H.Oil pipe is suppressed by well extroversion, the pressure in central tube sets unit through going out that through-hole is pressed to be transferred to, It is moved to setting position so that setting unit, meanwhile, it sets in unit moving process and anchor unit is pushed to be anchored on casing, it Sealing unit expansion afterwards is set, and so sets completion so that high temperature resistant water blockoff bridge plug is set in the water-yielding stratum position of underground, is utilized The sealed separation of packing element acts on, and the water outlet closure of oil well bottom is separated, in this way, the high temperature resistant water blockoff bridge plug can be sealed effectively Every bottom water-yielding stratum, the recovery ratio in oil field is improved.

With reference to following description and accompanying drawings, the particular implementation of the utility model is disclosed in detail, specifies this practicality Novel principle can be in a manner of adopted.It should be understood that the embodiment of the utility model in range not thus by Limitation.In the range of the spirit and terms of appended claims, the embodiment of the utility model includes many changes, modifications With it is equivalent.

The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more It is used in a other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.

It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those skilled in the art, without having to pay creative labor, Other drawings may also be obtained based on these drawings.

Fig. 1 is a kind of high temperature resistant water blockoff bridge plug structural schematic diagram that the embodiment of the utility model is provided；

Fig. 2 is the Production through Water Plugging tubular column structure schematic diagram using Fig. 1.

Specific implementation mode

In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality The attached drawing in example is applied, technical solutions in the embodiments of the present application is clearly and completely described, it is clear that described implementation Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common It is new should all to belong to this practicality for the every other embodiment that technical staff is obtained without making creative work The range of type protection.

It should be noted that when element is referred to as " being set to " another element, it can be directly on another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ", " right side " and similar statement for illustrative purposes only, are not offered as being unique embodiment.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with the technology for belonging to the utility model The normally understood meaning of technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" packet Include any and all combinations of one or more relevant Listed Items.

Referring to Fig. 1, a kind of high temperature resistant water blockoff bridge plug structural schematic diagram provided by the embodiment of the utility model. In one embodiment, which includes：Central tube 7 sets unit, anchor unit, sealing unit and loses Hand unit.

Wherein, the unit that sets is sheathed on outside the central tube 7；The tube wall of the central tube 7 is equipped with and the seat What envelope unit communicated goes out to press through-hole.

The unit that sets can be moved downward to setting position under 7 internal pressure force effect of the central tube；The list of giving up Member is installed on the upper end of the central tube 7, and positioned at the top for setting unit；The unit of giving up sets list described Member can disengage when being moved to setting position with the central tube 7.

The sealing unit and the anchor unit are located at the lower section for setting unit；The unit that sets moves down Shi Nengxian pushes the anchor unit to be anchored on casing, then the sealing unit expansion is pushed to set.

It, can be sequentially suitable by silk plug, high temperature resistant water blockoff bridge plug in present embodiment when using the high temperature resistant water blockoff bridge plug The water-yielding stratum of sequence G.I.H.Oil pipe is suppressed by well extroversion, the pressure in central tube 7 sets list through going out that through-hole is pressed to be transferred to Member so that it sets unit and is moved to setting position, meanwhile, it sets in unit moving process and anchor unit is pushed to be anchored on casing On, sealing unit expansion later is set, and so sets completion so that high temperature resistant water blockoff bridge plug sets the water exit in underground It sets, is acted on using the sealed separation of packing element 13, the water outlet closure of oil well bottom is separated, in this way, the high temperature resistant water blockoff bridge plug can Effectively to insulate bottom water-yielding stratum, the recovery ratio in oil field is improved.

Further include being located at the central tube 7 and the locking machine set between unit to prevent the high temperature resistant water blockoff bridge plug Structure；The retaining mechanism includes the locking tube 11 and set what unit moved with described that fixing sleeve is set to outside the central tube 7 Retaining ring 9；The locking tube 11 is matched with the retaining ring 9 so that described set unit and be only capable of moving down.

Wherein, retaining ring 9 is sheathed on outside locking tube 11, and retaining ring 9 can be an opening annulus, itself can be with undergauge and extensive It is multiple.Mutually matched helical teeth can be equipped on the outer wall of locking tube 11 and the inner wall of retaining ring 9, the helical teeth of locking tube 11 is oblique Lower section can only move down in this way, the locking tube 11 can limit retaining ring 9, and then limit to set unit and be moved to and set Behind position can not uplink, maintain sealing unit and anchor unit sets state.It is proposed that the high temperature resistant is stifled for convenience of follow-up deblocking The inner wall of water bridge plug, the locking tube 11 is equipped with inner wall step, and the outer wall of the central tube 7 is equipped with outer wall step, this is outer Wall stand component level is in the lower section of inner wall step, also, the outer diameter of the outer wall step is more than the internal diameter of the inner wall step, so upper It is matched with inner wall step by outer wall step when carrying central tube 7, pulls 11 uplink of locking tube.

Please continue to refer to Fig. 1, the unit that sets includes the housing 6 being sheathed on outside the central tube 7, is fixedly connected on institute State the packing element upper pressing cap 10 of 6 lower end of housing；The inner wall of the packing element upper pressing cap 10 is fixedly connected with pressure ring 8；It is pressed on the packing element The inner wall of cap 10 is equipped with raised step；The raised step forms the holding tank for accommodating the retaining ring 9 with the pressure ring 8.

Wherein, when setting unit and being located at initial position (non-setting position), go out to press the pressure that through-hole transmits can act on The upper end of packing element upper pressing cap 10 sets unit movement to push down on.The lower end of housing 6 is connected by internal thread and is pressed on packing element The external screw thread of 10 upper end of cap, housing 6 and the screw connection point of packing element upper pressing cap 10 can be equipped with sealing ring, to keep sealing.

The upper end of the locking tube 11 is fixedly connected with connector 4；The connector 4 is sheathed on outside the central tube 7, and It is fixed on the central tube 7 by unsealing pin 5；The lower end of the locking tube 11, which is connected with, helps pull a cart 20；20 and the institute of helping pull a cart It states and is equipped with first seal 17 between central tube 7.

For carry out refractory seals, first seal 17 can be multiple graphite-seal rings, help pull a cart 20 lower end be equipped with limit Position step, multiple sealing rings are located between the limited step and the lower face of locking tube 11, and are sheathed on outside central tube 7.Even The lower face of junctor 4 is contacted with the upper surface of the packing element upper pressing cap 10, is set between the outer wall and the inner wall of housing 6 of connector 4 There is sealing ring.

Lead to it will be seen from figure 1 that being formed between connector 4 and pressure ring 8 (upper surface of packing element upper pressing cap 10) and going out pressure The space that hole (not indicating) communicates, is suppressed when through oil pipe, and pressure is through the inside of central tube 7 and when going out to press through-hole to enter the space, Pressure acts on the upper surface of pressure ring 8 and packing element upper pressing cap 10, so forms downward motive force to setting unit.It considers Between locking tube 11 is located at the space and goes out to press through-hole, locking tube 11 be equipped with by the space with go out the connection for pressing through-hole to be connected to Through-hole.

When being set, the thrust for setting unit (housing 6, packing element upper pressing cap 10) is acted on more than first seal Start to move down when frictional force between 17 and central tube 7, sealing unit is moved together with setting unit at this time, will be under anchor unit Pressure anchoring is set.

In the present embodiment, sealing unit and the anchor unit mechanism that is locked can be supported destructively.Setting state Under, sealing unit and anchor unit while the pipe 11 that is locked support, when needing deblocking, by locking tube 11 and sealing unit, anchor Continuous damage between order member discharges sealing unit, anchor unit, and anchor unit is released in anchor station and is anchored, to Sealing unit bounces back, and can so be unsealed salvaging.

In the present embodiment, the unit of giving up includes top connection 1, inner tube 2；The upper end of the central tube 7 is sheathed on Outside the lower end of said inner tube 2, the upper end of said inner tube 2 is fixedly connected with the top connection 1；The lower end of the top connection 1 be equipped with 4 matched pawl spring of the connector；By the connector when pawl spring is between the housing 6 and the connector 4 4 limits, and can be disengaged with the connector 4 when the housing 6 is located at the setting position.

The high temperature resistant water blockoff bridge plug can be with connected pipes, so as to G.I.H by top connection 1.The lower end of inner tube 2 Outer wall can be bonded with the inner wall of central tube 7.Connection relation is had no between inner tube 2 and central tube 7, to the inner tube when giving up 2 can be detached from central tube 7.The upper end of inner tube 2 connects the internal thread of 1 inner wall of top connection by external screw thread, and between Equipped with sealing ring, prevent suppress set when pressure release.Further, sealing ring is equipped between central tube 7 and connector 4, this is close Seal is located at the lower section of deblocking pin 5.

The high temperature resistant water blockoff bridge plug is salvaged to be honored as a queen in solution, the upper end of the central tube 7, which is fixedly connected with, salvages pipe 3；Institute It states and salvages the top that pipe 3 is located at the connector 4；The salvaging pipe 3 is located at said inner tube 2 and is sheathed on outside said inner tube 2；Institute The inner wall for salvaging pipe 3 is stated equipped with salvaging structure.By being equipped with the salvaging pipe 3, tripping in Special fishing tool can pass through in well It is matched with salvaging pipe 3 and salvages the high temperature resistant water blockoff bridge plug.

Please continue to refer to Fig. 1, the sealing unit includes packing element 13, rubber tube seat；The rubber tube seat is sheathed on the locking Outside pipe 11；The packing element 13 is sheathed on the rubber tube seat (not indicating) outside and positioned at the lower section of the packing element upper pressing cap 10.Wherein, Sealing ring is equipped between the upper end and packing element upper pressing cap 10 of rubber tube seat, to prevent pressure leakage.

To ensure that sealing unit expansion after anchor unit anchoring is set is set, setting can between unit and sealing unit To be connected by setting pin 12, sealing unit movement can be driven by setting pin 12 when moving to set unit, And anchor unit anchoring is pushed to set, will set pin 12 after anchor unit anchoring cuts, then will by packing element upper pressing cap 10 13 compression seal of packing element.Specifically, the lower end of the packing element upper pressing cap 10 connects the upper of the rubber tube seat by setting pin 12 End.

Specifically, the anchor unit includes cone 14, slips 16, slip spider 19；The cone 14 is fixedly connected described The lower section of rubber tube seat, and positioned at the lower section of the packing element 13；The inner wall of the cone 14 is equipped with sealed step；The sealed step Second seal 15 is equipped between the lower face of the rubber tube seat；The second seal 15 is sheathed on the locking tube 11 Outside.To adapt to heat safe ground environment, it is multiple graphite-seal rings to keep good sealing, the second seal 15.

The slips 16 is between the cone 14 and the slip spider 19；It is described to help pull a cart 20 equipped with installation through-hole；Institute It states and helps pull a cart 20 between the slip spider 19 and the central tube 7；Closing piece 18 is equipped in the installation through-hole；The slip spider 19 inner wall is equipped with embedded groove；The closing piece 18 is embedded in the embedded groove to support the slip spider 19；The central tube 7 Outer wall the lower section of the closing piece 18 be equipped with undergauge position.

Wherein, packing element 13 along the axial direction (upper and lower directions) of central tube 7 between packing element upper pressing cap 10 and the cone 14. Cone 14 is connected through a screw thread the lower end for being sheathed on the rubber tube seat.When setting unit and moving down, unit is set through setting pin 12 are moved down by rubber tube seat band movable cone 14, and slip spider 19 is fixed on position by the support of closing piece 18, to which cone 14 pushes It pushes slips 16 to stretch out, is anchored on casing.16 solution of slips is honored as a queen and can be resetted by the elastic component of itself.

It is former come the work that the high temperature resistant water blockoff bridge plug in present embodiment is described in detail with reference to embodiment illustrated in fig. 1 Reason, to more fully understand the utility model.

In order by silk plug, high temperature resistant water blockoff bridge plug successively G.I.H.It is suppressed in well extroversion oil pipe, when pressure is more than When certain value (frictional force for overcoming first seal 17), pressure push housing 6, pressure cap, retaining ring 9, packing element upper pressing cap 10, It sets pin 12, packing element 13, cone 14, first seal 17 to move downwardly together, and slips 16 is boosted and is anchored on casing.

When pressure continues to increase, the cutting of packing element upper pressing cap 10 sets pin 12, starts to compress packing element 13, while retaining ring 9 move downward, and are locked on locking tube 11, prevent packing element 13 and the loosening of slips 16 after pressure release.When packing element 13 is set completely, outside Set 6 is moved down into the pawl spring disengaged position with top connection 1, that is, realizes and give up.The outer upper lifting pipe post of well, by top connection 1 and inner tube 2 It proposes in well, completes the action that sets and give up.

When needing to unseal salvaging, the outer tripping in Special fishing tool of well, 3 position of salvaging to salvaging pipe, upper lifting pipe post.Center Pipe 7 cuts the deblocking pin 5 being connect with connector 4, and central tube 7 moves upwards so that the undergauge position of central tube 7 rises to 18 position of closing piece, then, closing piece 18 drop to the reducing position of central tube 7, exit and then are lost to slip spider 19 in embedded groove Support, since deblocking pin 5 is cut, slips 16 and packing element 13 bounce back, and complete deblocking.Continue above to carry the outer of central tube 7 Wall stand rank tangles the inner wall step of locking tube 11, and the drive of locking tube 11 helps pull a cart 20, and helping pull a cart 20 above puies forward cone 14 to by high temperature resistant The remainder of water blockoff bridge plug is salvaged outside well.

Referring to Fig. 2, for a kind of Production through Water Plugging tubular column structure schematic diagram for providing of embodiment of the utility model.This is stifled Hydromining tubing string includes：Casing 101；Oil pipe 102 in described sleeve pipe 101；The oil pipe 102 is equipped with oil well pump 103； High temperature resistant water blockoff bridge plug 104 described in any embodiment as above；The high temperature resistant water blockoff bridge plug 104 is located at the oil well pump The lower section of 103 lower section, the high temperature resistant water blockoff bridge plug 104 is equipped with silk plug 105.Wherein, high temperature resistant water blockoff bridge plug 104 can incite somebody to action Water-yielding stratum promotes oil productivity in down-hole plugging.

Herein cited any digital value all include between lower limiting value to upper limit value with the lower value of an incremented and The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as Fruit elaborates that the quantity of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20 To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification 68,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1. These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to Combination is all expressly set forth in the specification in a similar manner.

Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range " about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to covering " about 20 to about 30 ", including at least the endpoint indicated.

All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot Together in this.The term " substantially by ... constitute " for describing combination should include identified element, ingredient, component or step and reality Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or " comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component Or the embodiment that step is constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any Attribute is all optional.

Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used for The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component Or step.

It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch It states, many embodiments and many applications except the example provided all will be aobvious and easy for a person skilled in the art See.Therefore, the range of this introduction should not be determined with reference to foregoing description, but should with reference to appended claims and this The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed A part for utility model theme.

Claims (12)

1. a kind of high temperature resistant water blockoff bridge plug, which is characterized in that including：Central tube, set unit, anchor unit, sealing unit with And unit of giving up；

The unit that sets is sheathed on outside the central tube；The tube wall of the central tube is equipped with sets what unit communicated with described Go out to press through-hole；The unit that sets can be moved downward to setting position under the central tube internal pressure force effect；

The unit of giving up is installed on the upper end of the central tube, and positioned at the top for setting unit；The list of giving up Member can be disengaged in described set when unit is moved to setting position with the central tube；

The sealing unit and the anchor unit are located at the lower section for setting unit；It is described to set energy when unit moves down It first pushes the anchor unit to be anchored on casing, then the sealing unit expansion is pushed to set.

2. high temperature resistant water blockoff bridge plug as described in claim 1, it is characterised in that：Further include being located at the central tube and the seat Seal the retaining mechanism between unit；The retaining mechanism include fixing sleeve be set to the central tube outside locking tube and with institute State the retaining ring for setting unit movement；The locking tube is matched with the retaining ring so that the unit that sets is only capable of to moving down It is dynamic.

3. high temperature resistant water blockoff bridge plug as claimed in claim 2, it is characterised in that：It is described set unit include be sheathed on it is described in Housing outside heart pipe, the packing element upper pressing cap for being fixedly connected on the housing lower end；The inner wall of the packing element upper pressing cap is fixedly connected There is pressure ring；The inner wall of the packing element upper pressing cap is equipped with raised step；The raised step forms with the pressure ring and accommodates the lock The holding tank of tight ring.

4. high temperature resistant water blockoff bridge plug as claimed in claim 3, it is characterised in that：The upper end of the locking tube is fixedly connected with company Junctor；The connector is sheathed on outside the central tube, and is fixed on the central tube by unsealing pin；The locking tube Lower end, which is connected with, helps pull a cart；Described help pull a cart is equipped with first seal between the central tube.

5. high temperature resistant water blockoff bridge plug as claimed in claim 4, it is characterised in that：The unit of giving up includes top connection, inner tube； The upper end of the central tube is sheathed on outside the lower end of said inner tube, and the upper end of said inner tube is fixedly connected with the top connection；It is described The lower end of top connection is equipped with and the matched pawl spring of the connector；The pawl spring is between the housing and the connector When limited by the connector, and can be disengaged with the connector when the housing is located at the setting position.

6. high temperature resistant water blockoff bridge plug as claimed in claim 5, it is characterised in that：The upper end of the central tube, which is fixedly connected with, to be beaten Fishing pipe；The pipe of salvaging is positioned at the top of the connector；The salvaging pipe is sheathed on positioned at said inner tube outside said inner tube；Institute The inner wall for salvaging pipe is stated equipped with salvaging structure.

7. high temperature resistant water blockoff bridge plug as claimed in claim 6, it is characterised in that：The sealing unit includes packing element, rubber tube seat； The rubber tube seat is sheathed on outside the locking tube；It is outer and positioned at the packing element upper pressing cap that the packing element is sheathed on the rubber tube seat Lower section.

8. high temperature resistant water blockoff bridge plug as claimed in claim 7, it is characterised in that：The anchor unit includes cone, slips, card Watt seat；The cone is fixedly connected with the lower section of the rubber tube seat, and positioned at the lower section of the packing element；The inner wall of the cone is equipped with Sealed step；Second seal is equipped between the sealed step and the lower face of the rubber tube seat；The second seal set Outside the locking tube；

The slips is between the cone and the slip spider；It is described to help pull a cart equipped with installation through-hole；It is described to help pull a cart positioned at institute It states between slip spider and the central tube；Closing piece is equipped in the installation through-hole；The inner wall of the slip spider is equipped with embedded groove； The closing piece is embedded in the embedded groove to support the slip spider；The outer wall of the central tube is equipped in the lower section of the closing piece Undergauge position.

9. high temperature resistant water blockoff bridge plug as claimed in claim 8, it is characterised in that：The lower end of the packing element upper pressing cap is by setting Pin connects the upper end of the rubber tube seat.

10. high temperature resistant water blockoff bridge plug as claimed in claim 8, it is characterised in that：The central tube is equipped with outer wall step, described Locking tube is equipped with inner wall step；The outer wall step is located at the lower section of the inner wall step, also, the outer diameter of the outer wall step More than the internal diameter of the inner wall step.

11. high temperature resistant water blockoff bridge plug as claimed in claim 8, it is characterised in that：The first seal and described second close Sealing is multiple graphite-seal rings.

12. a kind of Production through Water Plugging tubing string, which is characterized in that including：

Casing；

Oil pipe in described sleeve pipe；The oil pipe is equipped with oil well pump；

High temperature resistant water blockoff bridge plug as described in claim 1-11 is any；The high temperature resistant water blockoff bridge plug is located at the oil well pump The lower section of lower section, the high temperature resistant water blockoff bridge plug is equipped with silk plug.