CN208669261U - A kind of thermal expansion packer - Google Patents

Abstract

The application provides a kind of thermal expansion packer, including inner tube and the supervisor being set in outside inner tube, it further include upper connector, it is provided in upper connector and passes through interface for what cable passed through, it passes through interface and axially penetrates through upper connector, it is outer that upper connector is set in supervisor, and connects with inner tube and supervisor, passing channel is formed between the inner wall of supervisor and the outside wall surface of inner tube, the lower end for passing through interface is connected to the upper end of passing channel.The thermal expansion packer construction of one kind provided by the utility model is simple, reliable performance, has high heat resisting and pressure resisting performance, while effectively sealing against oil jacket annulus, it is ensured that liquid controling pipe line or passing through for cable of test will not impact sealing.

Description

A kind of thermal expansion packer

Technical field

The utility model relates to a kind of downhole tool of petroleum heating exploitation more particularly to a kind of thermal expansion packers.

Background technique

The packer used on petroleum thermal production well is classified according to mode is set, and usually has hydraulic setting mode, lower tool It sets mode and heating power sets mode.Since heating power sets the packer of mode, setting process had not both needed auxiliary tool not yet Additional flow chart is needed, therefore has obtained more and more uses in land oil field and offshore oilfield.

Found by investigation, existing heat-sensitive packer or thermal expansion packer, as patent (201420371929.0), Patent (201320315321.1), patent (201020223802.6), patent (201210359315.6) etc., do not have packer Liquid controling pipe line or the function of other cables are passed through in ontology, cannot achieve the detection of downhole fluid temperature, pressure or downhole safety control System.

Utility model content

In order to solve the above technical problems, the utility model provides a kind of thermal expansion packer, can effectively seal against While oil jacket annulus, it is ensured that liquid controling pipe line or passing through for cable of test will not impact sealing, realize downhole fluid temperature Spend pressure detecting or downhole safety control.

In order to reach the purpose of this utility model, the utility model adopts the following technical solution:

The embodiments of the present invention provide a kind of thermal expansion packer, including inner tube and the master being set in outside inner tube Pipe, further includes upper connector, is provided in the upper connector and passes through interface for what cable passed through, described to pass through interface axial direction Through the upper connector,

The upper connector is set in outside the supervisor, and is connected with said inner tube and the supervisor, and the supervisor's is interior Passing channel, the upper end of the lower end for passing through interface and the passing channel are formed between wall surface and the outside wall surface of said inner tube Connection.

The thermal expansion packer that the embodiments of the present invention provide, supervisor are set in outside inner tube, and upper connector is arranged Outer wall in supervisor upper end, and be fixedly connected by screw thread with supervisor.Upper connector, which is provided with, passes through interface, passes through interface axial direction It is connected to through upper connector, and with passing channel, when needing to detect downhole fluid temperature, pressure or downhole safety, liquid controling pipe line Or other cables enter from interface is passed through, and pass through thermal expansion packer through passing channel and enter underground oil body, carry out dependency number According to acquisition.It should be noted that cable and pass through interface connection and be provided with sealing element, with to pass through interface carry out it is close Envelope.

Optionally, the upper connector, which is equipped with, multiple described passes through interface.

Optionally, it is multiple it is described pass through in interface passed through described at least two interface diameter it is different.

Specifically, upper connector passes through interface equipped with multiple, and passes through the diameter of interface according to common downhole tool It is also not identical that its diameter is set, this design is conducive to facilitate the corresponding power tool of installation according to practical situations, improves Working efficiency.

Optionally, multiple interfaces that pass through include that first passed through for cable passes through interface and blocked by silk plug Two pass through interface；

Alternatively, it is multiple it is described pass through interface include first passed through for cable pass through interface and for install ball-and-seat or The third of vent valve passes through interface；

Alternatively, multiple interfaces that pass through include second that first passed through for cable passes through interface, blocked by silk plug It passes through interface and the third for installing ball-and-seat or vent valve passes through interface.

Specifically, upper connector be provided with it is multiple pass through interface, and diameter is different, and liquid controling pipe line or test cable can bases Interface is passed through in specification selection corresponding first, when passing through interface when not used, needs to install silk plug and is sealed, and is sealed by silk plug It passes through interface and passes through interface for second.Further, according to the demand of thermal recovery technology, the undergrounds such as ball-and-seat or vent valve are provided with The third that tool matches passes through interface, uniaxially or controllably passes through packer to control fluid in oil jacket annulus.It passes through and connects Mouth can separately or concurrently be cooperatively connected with cable, silk plug and ball-and-seat or vent valve according to real work demand.Such interface Design can be convenient installation and replacement outfit, keeps operation more succinct, improves the efficiency of oil extraction operation.

Optionally, the upper connector includes the through-hole for being arranged the supervisor, and the through-hole is to deviate the upper company The eccentric orfice of the center line of adapter tube.

Specifically, the through-hole of upper connector and supervisor's connection, is set as eccentric orfice, the design of eccentric orfice can be passed through Interface stays more spaces, passes through interface in favor of multiple diameter is arranged in upper connector.

Optionally, the interface that passes through is stepped hole.

Specifically, the tool for needing installation to be relatively large in diameter when the upper end for passing through interface, when such as check valve or vent valve, preferably Ground, will be travelling through Interface design is stepped hole, and the diameter of the one end that is connected with passing channel is less than the diameter of the one end that is connected with tool, this The intensity of upper connector had both can be improved in kind design, reduced the size and weight for the supervisor being cooperatively connected with upper connector, meanwhile, Again the space in packer can be efficiently used with rational deployment.

Optionally, the center line of said inner tube and the center line of the supervisor are not overlapped, and the center line position of the supervisor In the side for passing through interface described in of the center line of said inner tube.

Specifically, inner tube is not overlapped with supervisor's center line, and is responsible for center line close to the side for passing through interface, so as to cross line Channel has bigger spatial dimension with side that interface is connected is passed through, when pass through number of cables it is more when, it is suitable to be conducive to cable Benefit passes through packer.

Optionally, the lower port sealing of the passing channel, alternatively, the lower port of the passing channel is opened wide.

Specifically, sealing element is set in the lower end of passing channel, sealing effect can be optimized, prevent oil body etc. from entering line Channel, in interface etc.；Alternatively, the lower port when passing channel is opened wide, it, can be in packer and mistake when being not provided with sealing element Interface such as upper connector and inner tube junction, upper connector and supervisor junction, is passed through in remaining relevant junction of line passage Deng, be arranged sealing element to guarantee sealing effect, the design of opening open is more advantageous to cable and passes through passing channel.

Optionally, the upper connector and the supervisor are tightly connected, and the upper end of said inner tube protrudes from the supervisor, and Said inner tube and the upper connector are tightly connected.

Optionally, the upper connector is threadedly coupled with the supervisor, and is set between the upper connector and the supervisor There is first seal；

The upper connector is threadedly coupled with said inner tube, and it is close that second is equipped between the upper connector and said inner tube Sealing.

Specifically, the upper end of inner tube protrudes from supervisor in the vertical direction, while protruding part and sealing with upper connector and connecting It connects.Specifically, in the present embodiment, upper connector is connected through a screw thread with inner tube and supervisor, and it is arranged in junction and seals Part guarantees the sealing effect in gap between the screw thread of junction.It is threadedly coupled the peace so that between upper connector and inner tube and supervisor It fills and replaces and is more convenient.

Alternatively, being fixedly connected between upper connector and inner tube and supervisor by circular weld, while achieving the effect that sealing.

In conclusion the utility model has the following beneficial effects:

The thermal expansion packer that the embodiments of the present invention provide, sets mode using heating power, main body has liquid The function that keyholed back plate line or other cables pass through, while effectively sealing against oil jacket annulus, it is ensured that liquid controling pipe line or test cable Pass through and sealing will not be impacted, meet thermal production well to the detection of downhole fluid temperature, pressure or the techniques such as downhole safety control Realization.Meanwhile it is different according to the quantity of the cable passed through and specification, the utility model provides a number of wearing with specification More interface facilitates the installation and replacement of downhole tool.

Other features and advantages of the utility model will illustrate in the following description, also, partly from specification In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages can pass through Specifically noted structure is achieved and obtained in the specification, claims and drawings.

Detailed description of the invention

Attached drawing is used to provide to further understand technical solutions of the utility model, and constitutes part of specification, It is used to explain the technical solution of the utility model together with embodiments herein, not constitute to technical solutions of the utility model Limitation.

Fig. 1 is the overall structure diagram of the thermal expansion packer according to the utility model embodiment；

Fig. 2 is the top structure schematic diagram of thermal expansion packer shown in FIG. 1；

Fig. 3 is the schematic cross-sectional view of the superstructure of thermal expansion packer shown in FIG. 1；

Fig. 4 is the partial enlargement diagram of the superstructure of thermal expansion packer shown in Fig. 3；

Fig. 5 is the partial enlargement diagram of the retaining mechanism of thermal expansion packer shown in Fig. 3；

Fig. 6 is the schematic cross-sectional view of the central structure of thermal expansion packer shown in FIG. 1；

Fig. 7 is the schematic cross-sectional view of the substructure of thermal expansion packer shown in FIG. 1.

Appended drawing reference:

1 upper connector, 101 upper connector main threads, 102 thirds pass through interface, 103 stepped holes, and 104 first pass through and connect Mouthful, 2 are responsible for, 201 unidirectional screw threads, 3 inner tubes, screw thread in 30F inner tube, screw thread under 301 inner tubes, 4 rubber tube seats, 5 lock ring seats, 6 lock rings, 7 upper sealing rings, 8 steel loops, 9 pressure rings, shoulder protector on 10 seal A in 11,12 packing elements, 13 wedging cones, sealing ring in 14, and 15 second Wedging body, 16 lower shoulder protectors, 17 fluid cylinders, 18 interior sealing B, 19 liquid injection holes, 20 annular sap cavities, 21 passing channels, 210 lower ports, 22 circular welds, 23 fluid cylinder seats, 24 interior sealing C, 25 lower sealing rings.

Specific embodiment

For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with attached drawing to this The embodiment of utility model is described in detail.It should be noted that in the absence of conflict, embodiment in the application and Feature in embodiment can mutual any combination.

As shown in Figure 1-3, present embodiments provide a kind of thermal expansion packer, including inner tube 3 and it is set in outside inner tube 3 Supervisor 2, further include upper connector 1, be provided in upper connector 1 and pass through interface for what cable passed through, pass through interface axial direction Through upper connector 1,

Upper connector 1 is set in outside supervisor 2, and 2 is connect with inner tube 3 and supervisor, be responsible for 2 inner wall and inner tube 3 outside Passing channel 21 is formed between wall surface, the lower end for passing through interface is connected to the upper end of passing channel 21.

Specifically, as shown in figure 3, supervisor 2 is set in outside inner tube 3, inner tube 3 passes through screw thread 30F and upper connector in inner tube 1 is threadedly coupled, and upper connector 1 is set in the outer wall of 2 upper ends of supervisor, and is fixedly connected with supervisor 2, and upper connector 1, which is provided with, wears More interface passes through interface and axially penetrates through upper connector 1, and is connected to passing channel 21.When needing to detect downhole fluid temperature pressure When power or downhole safety, liquid controling pipe line or other cables pass through interface 104 from first and enter, and pass through this packing through passing channel 21 Device enters underground oil body, carries out the acquisition of related data.It should be noted that the first upper end for passing through interface 104 is provided with spiral shell Line, when cable pass through first pass through interface 104 when, its junction is provided with sealing element, with to first pass through at interface 104 into Row sealing.

Optionally, upper connector 1 passes through interface equipped with multiple.

Optionally, it is multiple pass through in interface at least two pass through interface diameter it is different.

As shown in Figure 1-3, upper connector 1 passes through interface equipped with multiple, and the diameter of interface is passed through according to common well It is also not identical that its diameter is arranged in lower tool, specifically, as shown in Figs. 1-2, upper connector 1 is equipped with first and passes through interface 104, Be mainly used for liquid controling pipe line, test cable or other cables to pass through, third pass through interface 102 be mainly used for installing ball-and-seat or Vent valve tool, this design, which is conducive to be facilitated according to practical situations, installs corresponding power tool, improves work effect Rate.

Optionally, in example 1, it is multiple pass through interface include first passed through for cable pass through interface 104 and by The second of silk plug closure passes through interface.

Optionally, in example 2, multiple interfaces that pass through include that first passed through for cable passes through interface 104 and use Interface 102 is passed through in the third of installation ball-and-seat or vent valve.

Optionally, in the third embodiment, multiple interfaces that pass through include that first passed through for cable passes through interface 104, quilt The second of silk plug closure passes through interface and the third for installing ball-and-seat or vent valve passes through interface 102.

In example 1, required cable is selected according to demand, and cable is passed through from interface is passed through, into passing channel 21, such as when needing liquid controling pipe line or test cable, it can be selected to pass through interface accordingly according to cable specification.It needs to illustrate It is to pass through interface 104 different diameters can be set into according to common cable.It, should when pass through has cable to pass through in interface It passes through interface and can be described as first and pass through interface 104；When passing through interface without (passing through without cable), need to install silk plug envelope Stifled, the interface that passes through blocked by silk plug can be described as second and pass through interface.

In example 2, cable passes through first is arranged in upper connector 1 and passes through interface 104, meanwhile, according to thermal recovery work The demand of skill is additionally provided with the third matched with downhole tools such as ball-and-seat or vent valves in upper connector 1 and passes through interface 102, uniaxially or controllably pass through packer to control fluid in oil jacket annulus.

In the third embodiment, being provided with first passed through for cable passes through interface 104, by silk simultaneously in upper connector 1 Block that stifled second passes through interface and the third for installing ball-and-seat or vent valve passes through interface 102, to facilitate according to reality Work requirements peace turns and replacement outfit, keeps operation more succinct, improves the efficiency of oil extraction operation.

Wherein, as shown in Figs. 1-2, the utility model embodiment is arranged two in upper connector 1 using embodiment two A first passes through interface 104 and a third passes through interface 102.It should be appreciated that passing through the setting value volume and range of product of interface not It is limited to shown in attached drawing, and the type for passing through interface can change, such as: if a certain pass through when having cable to pass through in interface, this is passed through Interface is referred to as first and passes through interface, if this is passed through when passing through in interface without cable, this, which passes through interface and is referred to as second, is passed through Interface or third pass through interface.

Optionally, upper connector 1 includes the through-hole for being arranged supervisor 2, and through-hole is the center line for deviateing upper connector 1 Eccentric orfice.

As shown in figure 3, the through-hole that upper connector 1 and supervisor 2 and inner tube 3 are set with, is set for the eccentric, the design of eccentric orfice can To stay more spaces to passing through interface, interface is passed through in favor of setting different-diameter, further, the upper end of this through-hole is set Upper connector main thread 101 is equipped with to connect for packer upper end with other tools, meanwhile, under the lower end setting inner tube of inner tube 3 Screw thread 301 realizes that packer lower end is connect with other tools.

Optionally, passing through interface is stepped hole.

As shown in figure 3, when the upper end for passing through interface needs to install the tool being relatively large in diameter, when such as check valve or vent valve, Preferably, will be travelling through Interface design is stepped hole 103, and the diameter of the one end that is connected with passing channel 21 is less than the one end that is connected with tool Diameter, this design both can be improved the intensity of upper connector 1, and reduced the size for the supervisor 2 being cooperatively connected with upper connector 1 And weight, meanwhile, and the space in packer can be efficiently used with rational deployment.

Optionally, the center line of inner tube 3 and the center line of supervisor 2 are not overlapped, and the center line of supervisor 2 is located at inner tube 3 The close side for passing through interface of center line.

Specifically, as shown in figure 3, supervisor 2 is set in outside inner tube 3, it is preferable that the center line of inner tube 3 and the center of supervisor 2 Line is not overlapped, meanwhile, the side that keeps 21 cross-sectional area of passing channel big and orifice is passed through, is conducive to increase line so logical 21 cable of road pass through that side space, when pass through number of cables it is more when, be more advantageous to cable smoothly pass through.

Optionally, the lower port 210 of passing channel 21 seals, alternatively, the lower port 210 of passing channel 21 is opened wide.

As shown in fig. 7, sealing element is arranged in the lower end of passing channel 21, sealing effect can be optimized, alternatively, it is logical to have served as line The lower port 210 in road 21 is opened wide, when being not provided with sealing element, in packer remaining junction relevant to passing channel 21, as above Connecting tube 1 and inner tube 3 and 2 junctions of supervisor, are arranged sealing element to guarantee sealing effect, the design of opening open is more advantageous to line Cable passes through passing channel.

Optionally, upper connector 1 and supervisor 2 are tightly connected, and the upper end of inner tube 3 protrudes from supervisor 2, and inner tube 3 and upper company Adapter tube 1 is tightly connected.

Optionally, upper connector 1 is threadedly coupled with supervisor 2, and first seal is equipped between upper connector 1 and supervisor 2；

Upper connector 1 is threadedly coupled with inner tube 3, and second seal is equipped between upper connector 1 and inner tube 3.

In conjunction with shown in Fig. 1-7, the thermal expansion packer that the embodiments of the present invention provide and sets machine at retaining mechanism Structure is successively sleeved on the outer wall of supervisor 2, and as shown in Figure 3-4, retaining mechanism includes lock ring seat 5, and lock ring 6 is further responsible for Unidirectional screw thread 201 is provided on 2 outer walls, lock ring seat 5 is fixedly connected by unidirectional screw thread 201 with supervisor 2, lock ring seat 5 and lock ring 6 It is coupled, move up setting mechanism can only along supervisor 2, cannot move down.

As shown in fig. 3 to 7, sealing mechanism, wedging body, fluid cylinder 17 and fluid cylinder seat 23 are sequentially sleeved on the outer wall of supervisor 2, Specifically, fluid cylinder seat 23 is fixed on the outer wall of 2 lower ends of supervisor by circular weld 22, fluid cylinder 17 and 23 ring cavity of fluid cylinder seat it Between be set with lower sealing ring 25 and interior sealing C24, lower sealing ring 25 is threadably secured with fluid cylinder 17 and connect, the two cooperate C24 is sealed in compressing, to prevent the swelling agent in annular sap cavity 20 to be lost.

Wherein, annular sap cavity 20 is made of fluid cylinder 17, fluid cylinder seat 23 and supervisor 2, and liquid injection hole 19 is provided on fluid cylinder 17, is led to It crosses liquid injection hole 19 and injects swelling agent into annular sap cavity 20, further, in the ring cavity between 2 outer walls of 17 upper end of fluid cylinder and supervisor It is successively set with middle sealing ring 14 and interior sealing B18, middle sealing ring 14 is connected through a screw thread with fluid cylinder 17, in the two cooperation compression B18 is sealed, sealing effect can be optimized, the swelling agent in annular sap cavity 20 is prevented to be lost.

The working principle of the utility model is, a kind of thermal expansion packer provided by the utility model passes through petroleum and infuses Heat pipe column is placed in underground, and when swelling agent expanded by heating pusher hydrodynamic cylinder 17 moves up, fluid cylinder 17 is moved up in promotion wedging cone 13 It moves, meanwhile, the conical surface of wedging cone 13 enters packing element 12, supports big by packing element 12 and is pressed further by upper shoulder protector 10 and lower shoulder protector 16, it completes to set.Further, it wedges between cone 13 and supervisor 2 and is successively arranged with upper sealing ring 7, pressure ring 9, interior sealing A11 while wedging cone 13 moves upwards support big packing element 12, cooperates in squeezing with upper sealing ring 7, pressure ring 9 and seals A11, have Imitate the ring cavity space between sealant cylinder base 4 and supervisor 2.

Further, in order to cooperate setting for packing element 12, there are upper shoulder protector 10, lower shoulder protector in the upper and lower two sides of packing element 12 respectively 16, preventing packing element shoulder, stress is concentrated and is torn in extrusion process, and the second wedging body 15 is further supportted in packer setting Big packing element 12, further sealing oil jacket annulus.Wherein, rubber tube seat 4 is set in outside upper connector 1, and the company of being threadably secured It connects, steel loop 8 is set between rubber tube seat 4 and upper shoulder protector 10, play the role of axial limiting to packing element.

Further, inner tube 3 and upper connector 1 are tightly connected.Specifically, in the present embodiment, upper connector 1 with it is interior Pipe 3 and supervisor 2 are connected through a screw thread, and sealing element is arranged in junction, between the screw thread for preventing oil or vapor from passing through junction Gap enter oil jacket annulus.It is threadedly coupled so that the installation and replacement between upper connector 1 and inner tube 3 and supervisor 2 are more square Just, alternatively, being fixedly connected between upper connector 1 and inner tube 3 and supervisor 2 by circular weld, while achieving the effect that sealing.

1~4 first is provided in upper connector 1 in the utility model embodiment and passes through 104,1~2, interface Three pass through interface 102, and liquid controling pipe line or test cable can select to pass through accordingly according to specification interface 104 or 102 across this envelope Every device, it is sealed when passing through interface 104 or 102 and installing corresponding silk plug when not used.

In description in the present embodiment, it is to be understood that term " on ", "lower", "inner", "outside", etc. instructions side Position or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description the utility model and simplification is retouched It states, rather than the structure of indication or suggestion meaning has specific orientation, is constructed and operated in a specific orientation, therefore cannot manage Solution is limitations of the present invention.

Although embodiment disclosed by the utility model is as above, content only for ease of understanding the utility model and adopt Embodiment is not intended to limit the utility model.Technical staff in any the utility model fields is not taking off Under the premise of from spirit and scope disclosed by the utility model, any modification can be carried out in the form and details of implementation With variation, but the scope of patent protection of the utility model, the appended claims that must still be subject to are defined.

Claims (10)

1. a kind of thermal expansion packer, including inner tube and the supervisor being set in outside inner tube, which is characterized in that further include upper connection It manages, is provided in the upper connector and passes through interface for what cable passed through, the interface that passes through axially penetrates through the upper connection Pipe,

The upper connector is set in outside the supervisor, and is connected with said inner tube and the supervisor, the inner wall of the supervisor Passing channel, the upper end company of the lower end for passing through interface and the passing channel are formed between the outside wall surface of said inner tube It is logical.

2. thermal expansion packer according to claim 1, which is characterized in that the upper connector is equipped with multiple described Pass through interface.

3. thermal expansion packer according to claim 2, which is characterized in that passed through at least two in interface described in multiple The diameter for passing through interface is different.

4. thermal expansion packer according to claim 2, which is characterized in that multiple interfaces that pass through include for line What cable passed through first passes through interface and second passes through interface by what silk plug blocked；

Alternatively, passing through interface described in multiple includes that first passed through for cable passes through interface and for installing ball-and-seat or deflation The third of valve passes through interface；

Alternatively, multiple interfaces that pass through include that first passed through for cable passes through interface, passed through by the second of silk plug closure Interface and third for installing ball-and-seat or vent valve pass through interface.

5. thermal expansion packer described in any one of -4 according to claim 1, which is characterized in that the upper connector includes For being arranged the through-hole of the supervisor, the through-hole is the eccentric orfice for deviateing the center line of the upper connector.

6. thermal expansion packer described in any one of -4 according to claim 1, which is characterized in that the interface that passes through is rank Terraced hole.

7. thermal expansion packer described in any one of -4 according to claim 1, which is characterized in that the center line of said inner tube It is not overlapped with the center line of the supervisor, and the center line of the supervisor is located at passing through close to described for the center line of said inner tube The side of interface.

8. thermal expansion packer described in any one of -4 according to claim 1, which is characterized in that under the passing channel Port sealing, alternatively, the lower port of the passing channel is opened wide.

9. thermal expansion packer described in any one of -4 according to claim 1, which is characterized in that the upper connector and institute It states supervisor to be tightly connected, the upper end of said inner tube protrudes from the supervisor, and said inner tube and the upper connector are tightly connected.

10. thermal expansion packer according to claim 9, which is characterized in that the upper connector and supervisor's spiral shell Line connection, and first seal is equipped between the upper connector and the supervisor；

The upper connector is threadedly coupled with said inner tube, and the second sealing is equipped between the upper connector and said inner tube Part.