CN109944568A - One kind is every adopting packer and every adopting construction method - Google Patents
One kind is every adopting packer and every adopting construction method Download PDFInfo
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- CN109944568A CN109944568A CN201910256755.0A CN201910256755A CN109944568A CN 109944568 A CN109944568 A CN 109944568A CN 201910256755 A CN201910256755 A CN 201910256755A CN 109944568 A CN109944568 A CN 109944568A
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- 238000011084 recovery Methods 0.000 abstract description 4
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Abstract
The present invention provides one kind every adopting packer and every adopting construction method, it is related to oil gas field oil recovery technique field, it include: ontology, ontology is hollow tube body, ontology successively includes: extension diameter section, changeover portion, sets section from lower end to upper end, the outer diameter of extension diameter section, which is greater than, sets section, and multiple sealing rings are equipped on the outer wall for set section；Deliver tubing string, comprising: oil pipe and the pull rod being set in inside oil pipe and set cone and are fixedly connected to form setting mechanism the lower end of oil pipe, the lower end of pull rod and set and stifled are fixedly connected to form plugging mechanism；Toroidal cavity is formed between setting mechanism and plugging mechanism, setting cone can slide through changeover portion to setting section under the action of pressure fluid from extension diameter section, described to set section and the sealing ring is softened.It is provided by the invention every adopting packer and every adopting construction method, can eliminate because of the factor that reasons cause packer to fail such as tubing string activity, packing element shoulder be prominent, additionally it is possible to be conducive to the tripping in construction of subsequent oil pumping flow string.
Description
Technical field
This application involves oil gas field oil recovery technique fields, and in particular to a kind of every adopting packer and every adopting construction method.
Background technique
During oil exploitation, often there is breakage because of reasons such as corrosion in down-hole casing, and water flooding is caused to enter pit shaft, shadow
The normal exploitation in oil field is rung, it is therefore desirable to oil, water layer be realized and separated.Currently, oil, water layer are carried out usually using packer
Separate to realize every adopting.In the prior art, packer is generally divided into two classes: one kind is that packer is connected directly between to oil recovery production
On tubing string, artificial bottom of a well being supported on by tail pipe and realizes and sets, the another kind of slips to carry by packer is stuck in set
It realizes and sets on pipe.
Applicant is by for many years the study found that packer in the prior art is primarily present following defect: first is that production pipe
Column, because of activity or vibration, causes constantly to generate abrasion between packer and casing, accelerates the mistake of packer in oil recovery process
Effect；Second is that packer all can be with oil pumping flow string when any one component failure needs replacing in flow string
It is come out, passively replaces, working procedure is cumbersome by rising；Third is that meeting under the action of interlayer pressure difference after packing element support large deformation
It is damaged, to greatly shorten the service life of packer.
It should be noted that the above description of the technical background be intended merely to it is convenient technical solution of the present invention is carried out it is clear, complete
Whole explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes in back of the invention
Scape technology segment is expounded and thinks that above-mentioned technical proposal is known to those skilled in the art.
Summary of the invention
To achieve the above object, this application provides one kind every adopting packer and every adopting construction method, suitable for not pressing
The construction site of well Operating Pressure, can eliminate because tubing string activity, packing element shoulder be prominent etc. reasons cause packer fails because
Element, additionally it is possible to be conducive to the tripping in construction of subsequent oil pumping flow string.The technical solution of offer is as described below:
One kind is every adopting packer, comprising: ontology, the ontology are hollow tube body, have opposite top and bottom, institute
It states ontology successively to include: extension diameter section, changeover portion, set section from lower end to upper end, the outer diameter of the extension diameter section is greater than described set
Section, is equipped with multiple sealing rings on the outer wall for setting section；Deliver tubing string, comprising: oil pipe and be set in the oil pipe
The pull rod in portion, wherein the lower end of the oil pipe and set cone and be fixedly connected to form setting mechanism, the lower end of the pull rod with set
Stifled to be fixedly connected to form plugging mechanism, described set is blocked up with solid construction, and realization is connect with the pull rod and is blocked；It is described to set
Toroidal cavity is formed between mechanism and the plugging mechanism, pressure fluid can circulate through the toroidal cavity and act on to described and set
The bottom surface of cone, the cone that sets can be slided through the changeover portion to the seat under the action of pressure fluid from the extension diameter section
Section is sealed, it is described to set section and the sealing ring is softened.
As a preferred embodiment, the lower end of the ontology is additionally provided with seal receptacle, during the seal receptacle has
Empty cavity, the seal receptacle are built-in with hanging pup joint, are provided between the seal receptacle and the hanging pup joint for limiting
The first position-limit mechanism that the hanging pup joint is deviate from from the lower end of the ontology；
The hanging pup joint has hollow cavity, described to set the stifled inside for being mounted on the hanging pup joint, the seat
It blocks to be provided between the hanging pup joint and described sets stifled second deviate from from the lower end of the hanging pup joint for limiting
Position-limit mechanism.
As a preferred embodiment, the pull rod has the solid body of rod, the lower end of the body of rod and the seat
The upper end of closure is fixedly connected, and the upper end of the body of rod is provided with lug boss, and the outer diameter of the lug boss sets cone greater than described
Internal diameter, and be less than the oil pipe internal diameter.
As a preferred embodiment, the outer diameter of the body of rod and the gap set between cone internal diameter are not less than
6mm。
As a preferred embodiment, the hanging pup joint and described set are provided with the first locking member between stifled,
The first groove is provided on the inner wall of the hanging pup joint, described set is provided with the second groove on stifled outer wall, and described first
Groove and second groove match the cavity to be formed for accommodating first locking member.
As a preferred embodiment, the second locking member is provided between the hanging pup joint and the seal receptacle,
The third groove for accommodating second locking member is provided on the outer wall of the hanging pup joint.
As a preferred embodiment, the hanging pup joint and described set are provided with the second locking member between stifled,
The third groove for accommodating second locking member, the lock of second locking member are provided on the outer wall of the hanging pup joint
Clamp force degree is greater than first locking member.
As a preferred embodiment, the lower end of the hanging pup joint is fixedly connected with the first flow string.
One kind should be using described every adopting what packer was realized every adopting construction method, operation walks every adopting construction method
Suddenly are as follows:
The pressure fluid is injected out of described toroidal cavity；
After the oil pipe rises to preset distance, above mention the oil pipe, the oil pipe drive described in set cone, the drawing
Bar described set the stifled and described hanging pup joint and rises out together；
The hanging pup joint is connected on flow string, tripping in is connected with the flow string of the hanging pup joint,
Extremely the hanging pup joint is seated in until first position-limit mechanism on the seal receptacle.
One kind should be using described every adopting what packer was realized every adopting construction method, operation walks every adopting construction method
Suddenly are as follows:
The pressure fluid is injected out of described toroidal cavity；
After the oil pipe rises to preset distance, above mention the oil pipe, the oil pipe drive described in set cone, the drawing
Bar, described set stifled are risen out together；
The bottom of second flow string is connected into insertion pipe, tripping in is connected with the second production pipe of the insertion pipe
Column, until the insertion pipe is inserted into the hanging pup joint.
It is provided by the present application every adopt packer and every adopt construction method be suitable for no killing well Operating Pressure construction site,
It has the following advantages and features:
It is described that the ontology for adopting packer is provided with extension diameter section, changeover portion and sets section, and in the outer wall for setting section
On be provided with multiple sealing rings.The delivery tubing string of the packer includes: oil pipe and pull rod, wherein the lower end of the oil pipe with
It sets cone and is fixedly connected to form setting mechanism, the lower end of the pull rod and set and stifled be fixedly connected to form plugging mechanism, the seat
Toroidal cavity is formed between sealing mechanism and the plugging mechanism.In use, to the toroidal cavity injection pressure liquid, the pressure
Liquid can be acted on through the toroidal cavity to the bottom surface for setting cone.Set cone under hydraulic promotion, can be slided from extension diameter section to
It is described to set section, it is able to drive and sets section and the increase of sealing ring outer diameter, complete to set.
Sealing ring after setting is crushed between ontology and casing, is played a dual role of sealing and suspension, is then risen out
Oil pipe, under the drive of oil pipe, a series of attachmentes in the packer rise out together, then tripping in flow string, and after progress
Continuous oil producing operation.Packer in compared to the prior art can be eliminated because the reasons such as tubing string activity, packing element shoulder protrusion are led
Cause the factor of packer failure.
Referring to following description and accompanying drawings, specific implementations of the present application are disclosed in detail, specify the original of the application
Reason can be in a manner of adopted.It should be understood that presently filed embodiment is not so limited in range.In appended power
In the range of the spirit and terms that benefit requires, presently filed embodiment includes many changes, modifications and is equal.
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 uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Detailed description of the invention
Fig. 1 is in the application embodiment every the structural schematic diagram for adopting packer；
Fig. 2 is the structural schematic diagram in Fig. 1 in ontology extension diameter section；
Fig. 3 is the structural schematic diagram after adopting packer setting in the application embodiment；
Fig. 4 is partial enlarged view at the I in Fig. 3；
Fig. 5 is insertion pipe/hanging pup joint composite structure schematic diagram during the application is implemented；
Fig. 6 is the split type flow string structural schematic diagram in the application embodiment；
Fig. 7 is that the monoblock type in the application embodiment produces tubular column structure schematic diagram.
Description of symbols:
A, casing；101, ontology；101a, section is set；101b, changeover portion；101c, extension diameter section；102, sealing ring；103, close
Seal seat；103a, the first limited step；103b, outer limited step；201, cone is set；202, it sets stifled；203, hanging pup joint；
203a, the second limited step；301, oil pipe；302, pull rod；401, the first locking member；402, the second locking member；501, insertion pipe；
501a, positioning step；6, oil well pump；7, gas anchor；8, bottom is stifled.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, elaborate to technical solution of the present invention, it should be understood that these
Embodiment is merely to illustrate the present invention rather than limitation range, after the present invention has been read, those skilled in the art couple
The modification of various equivalent forms of the invention is each fallen in the application range as defined in the appended claims.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", "upper",
"lower", "left", "right" and similar statement for illustrative purposes only, are not meant to be the only embodiment.
This application provides one kind every adopting packer, as depicted in figs. 1 and 2, comprising: ontology 101, the ontology 101 are
Hollow tube body, have opposite top and bottom, the ontology from lower end to upper end successively include: extension diameter section 101c, transition
Section 101b, a section 101a is set, the outer diameter of the extension diameter section 101c sets a section 101a greater than described, sets the outer of section 101a described
Multiple sealing rings 102 are equipped on wall；Deliver tubing string, comprising: oil pipe 301 and the pull rod being set in inside the oil pipe 301
302, wherein the lower end of the oil pipe 301 and set cone 201 and be fixedly connected to form setting mechanism, the lower end of the pull rod 302 with
It sets stifled 202 and is fixedly connected to form plugging mechanism, it is described to set stifled 202 with solid construction, realization is connect with the pull rod 302
It blocks；Toroidal cavity is formed between the setting mechanism and the plugging mechanism, pressure fluid can circulate simultaneously through the toroidal cavity
Act on to the bottom surface for setting cone 201, it is described set cone 201 can be from the extension diameter section 101c under the action of pressure fluid
It slides through the changeover portion 101b to described and sets a section 101a, it is described to set section 101a and the sealing ring 102 is softened.
The application embodiment provide every adopt packer be suitable for no killing well Operating Pressure construction site, in use,
To the toroidal cavity injection pressure liquid, the pressure fluid can be acted on through the toroidal cavity to the bottom surface for setting cone 201.It sets
Cone can be slided to described from extension diameter section 101c and set a section 101a 201 under hydraulic promotion, be able to drive set section 101a with
And 102 outer diameter of sealing ring increases, and completes to set.
Sealing ring 102 after setting is crushed between ontology 101 and sleeve A, plays a dual role of sealing and suspension, so
After play flowline 301, under the drive of oil pipe 301, a series of attachmentes in the packer rise out together, then tripping in production pipe
Column, and carry out subsequent oil producing operation.Packer in compared to the prior art can be eliminated because of tubing string activity, packing element shoulder
The factor that the reasons such as prominent cause packer to fail.
Specifically, the ontology 101 of the packer can be the metal tube with preferable plasticity, specific material is not limited
It is fixed.Ontology 101 has hollow cavity, and has opposite top and bottom.In the embodiment of the present application, ontology 101
By taking the direction of packer tripping in vertical well section as an example, what the application embodiment provided is not limited to every adopting packer for upper end, lower end
Other operative scenarios, such as horizontal well operations.
Successively include: extension diameter section 101c, changeover portion 101b, set a section 101a from the lower end of ontology 101 to upper end.Extension diameter section
101c with set section 101a and connected by changeover portion 101b, the changeover portion 101b has inclined inclined-plane.Wherein, described expanding
The outer diameter of section 101c is not construed as limiting slightly larger than a section 101a, extension diameter section 101c and the outer diameter specific size for setting section 101a is set, can
It is adjusted according to the actual inner diameter size of sleeve A used.Several sealing rings are equipped on the outer wall for setting section 101a
102, the sealing ring 102 can set a section 101a outer wall by vulcanizing or pasting to be fixed on, and the sealing ring 102 can be rubber
Packing element.
Delivering tubing string includes: oil pipe 301 and pull rod 302.The oil pipe 301 is set in the inside of ontology 101, oil pipe 301
With opposite top and bottom, the upper end is connected with compo site tubular mast, and the lower end of oil pipe 301, which is fixedly connected with, sets 201 shapes of cone
At setting mechanism, connection type can be threaded connection.Specifically, setting cone 201 has opposite top and bottom, cone is set
Internal screw thread has can be set in 201 upper end, and the lower end of the oil pipe 301 is equipped with external screw thread, sets the internal screw thread and oil pipe of cone 201
301 external screw thread matches realization connection.The pull rod 302 is set in inside the oil pipe 301, and pull rod 302 has opposite
Top and bottom, the lower end of pull rod 302, which is fixedly connected with, sets stifled 202 formation plugging mechanism, and the mode of being fixedly connected can be spiral shell
Line connection.On the whole, as shown in Figure 1, the plugging mechanism is set in the setting mechanism, and setting mechanism and plugging mechanism
Between form toroidal cavity, pressure fluid can circulate through the toroidal cavity and act on to the bottom surface for setting cone 201 and seat
Block 202 top surface.
The cone 201 that sets has hollow cavity, can be hollow metal body.Set cone 201 outer wall with it is expanding
Section 101c is in contact, and the cone that sets can be slided to setting a section 101a from extension diameter section 101c 201 under the action of hydraulic, so that
It sets section 101a and changeover portion 101b is integrally plastically deformed；A section 101a, changeover portion 101b and extension diameter section 101c are set at this time
Size it is consistent, be softened positioned at the sealing ring 102 set on section 101a, outer wall and the casing of sealing ring 102 fit, realize
It sets.
Further, it is described set cone 201 can have the first segment being in contact with the extension diameter section 101c inner wall and with
The second segment for setting section 101a inner wall and being in contact.It is described to set stifled 202 setting in the extension diameter section 101c, and be located at and sit
First pars infrasegmentalis of envelope cone 201.Described to set stifled 202 with solid construction, outer wall of the pressure fluid through the plugging mechanism is along institute
After stating toroidal cavity circulation, effect is realized to the top surface for setting stifled 202 to be blocked.It is described set stifled 202 outer diameter be greater than it is described
The internal diameter of cone 201 is set, therefore under the restriction for setting cone 201, it is ensured that setting stifled 202 will not prolapse upwards.Due to sitting
The maximum outside diameter of envelope cone 201 is approximately the internal diameter of extension diameter section 101c, so the maximum outside diameter for setting cone 201, which is greater than, sets a section 101a
Internal diameter, therefore cone 201 is set under the action of being not affected by external force, it will not prolapse upwards.The first segment for setting cone 201 and institute
It states and is additionally provided with several sealing rings between extension diameter section 101c, be provided on the outer wall for setting cone 201 for accommodating sealing ring
Groove, so as to will set cone 201 and extension diameter section 101c between formed sealing.
Pull rod 302 is specially solid bar structure, and the body of rod has opposite top and bottom.Under the body of rod
It holds and is fixedly connected with stifled 202 upper end of setting, the upper end of the body of rod is provided with lug boss.The outer diameter of the lug boss is big
In the internal diameter for setting cone 201, and it is less than the internal diameter of the oil pipe 301.The outer diameter of the body of rod and post screw thread is respectively less than
Set the internal diameter of cone 201, it is preferred that the outer diameter of the body of rod and post screw thread and set gap between 201 internal diameters of cone at least
For 6mm, so guarantee that the body of rod can pass through the hollow cavity for setting cone 201, additionally it is possible to reserve enough fluid passages, make
The channel can smoothly be flowed through by obtaining liquid, be acted on the bottom surface for setting cone 201.
In the present embodiment, as shown in Fig. 2, the lower end of the ontology 101 is additionally provided with seal receptacle 103, the sealing
Seat 103 has hollow cavity, and the seal receptacle 103 is built-in with hanging pup joint 203, and the seal receptacle 103 and the suspension are short
The first position-limit mechanism deviate from for limiting the hanging pup joint 203 from the lower end of the ontology 101 is provided between section 203；
The hanging pup joint 203 has hollow cavity, described to set stifled 202 inside for being mounted on the hanging pup joint 203, the seat
It blocks to be provided between 202 and the hanging pup joint 203 and described sets stifled 202 under the hanging pup joint 203 for limiting
Hold the second position-limit mechanism of abjection.
Seal receptacle 103 is the metal circular tube with hollow cavity, and specific material the application is not construed as limiting.Seal receptacle 103 can
It is connect in a manner of being connected through a screw thread with the lower end of ontology 101.Specifically, the upper end of seal receptacle 103 is equipped with external screw thread, ontology
101 lower end is provided with internal screw thread.Several sealing rings, seal receptacle 103 can be set between seal receptacle 103 and ontology 101
Outer wall on be provided with groove for accommodating sealing ring.The hanging pup joint 203 is seated in the seal receptacle 103, and is led to
The relative position for crossing first the position-limit mechanism fixed hanging pup joint 203 and the seal receptacle 103, to prevent from hanging short
Section 203 is deviate from from the bottom of seal receptacle 103.
Further, as shown in Figure 2 and Figure 5, the upper end of the seal receptacle 103 is provided with the first limited step 103a, right
It answers, outer limited step 103b is provided on the outer wall of the hanging pup joint 203.The first limited step 103a and described outer
Limited step 103b is matched, and forms the first position-limit mechanism, to prevent hanging pup joint 203 from deviating from downwards.Hanging pup joint 203 is logical
It crosses first position-limit mechanism to be seated in the lower end of seal receptacle 103, ensure that when individually salvaging hanging pup joint, hanging pup joint 203
It can be separated with ontology 101.If desired sand washing or the connecting component below of hanging pup joint 203 is overhauled, it is short that suspension can be salvaged
Section 203 will need the component overhauled to overhaul.After Awaiting Overhaul, hanging pup joint 203 can be seated in again to the first limit
On the step 103a of position.
The hanging pup joint 203 is the metal circular tube with hollow cavity, and specific material the application is not construed as limiting.It is described outstanding
Hanging pipe nipple 203 has opposite top and bottom, described to set stifled 202 and be mounted in hanging pup joint 203, and passes through described second
The fixed hanging pup joint 203 of position-limit mechanism sets stifled 202 relative position with described, to prevent from setting stifled 202 from suspension
Deviate from the lower end of pipe nipple 203.The second limited step 203a, corresponding, the seat are provided on the inner wall of the hanging pup joint 203
It blocks and is provided with the limited step (not shown) matched with the second limited step 203a on 202 outer wall.It is described
Second limited step 203a is matched with the limited step, forms the second position-limit mechanism, so that it is de- downwards to prevent from setting stifled 202
Out.
Further, set between stifled 202 and the hanging pup joint 203 described, the hanging pup joint 203 with it is described close
It seals between seat 103, multiple sealing rings can be set.The outer wall for setting stifled 202 and the hanging pup joint 203 it is outer
The groove for accommodating sealing ring is offered on wall.
In one embodiment, as shown in Figure 2 and Figure 5, the hanging pup joint 203 and described set set between stifled 202
It is equipped with the first locking member 401, the first groove is provided on the inner wall of the hanging pup joint 203, described set sets on stifled outer wall
It is equipped with the second groove, first groove and second groove match to be formed for accommodating first locking member 401
Cavity.
First locking member 401 is specially small circlip, and the small circlip is the elastic metallic ring of an opening, and section is in
" interior flat evagination " shape.When installation, small circlip is installed to second groove, and when being seated in this and setting stifled 202, small circlip can
Be caught in the first groove on 203 inner wall of hanging pup joint, will set stifled 202 and hanging pup joint 203 be attached.
Specifically, packer is assembled first, referring to figs. 1 to shown in Fig. 5.Installation sets cone 201 in ontology 101, makes it
The conical surface lean against on changeover portion 101b.Setting the first locking member 401 is installed in the second groove on stifled 202 outer wall, then will sit
It blocks 202 to be mounted in hanging pup joint 203, be seated in the second limited step 203a, meanwhile, the evagination of the first locking member 401
Inclined-plane snaps into the first groove on hanging pup joint 203.Stifled 202 are set as hanging pup joint 203 is installed to extension diameter section together
After in 101c, then seal receptacle 103 is installed.Oil pipe 301 is passed through inside ontology 101 finally, is connect with cone 201 is set, then
Pull rod 302 is passed through out of oil pipe 301, is connect with setting stifled 202.
Since seal receptacle 103 is fixed on the lower end of ontology extension diameter section 101c, while the upper surface of seal receptacle 103 is provided with
The outer limited step 103b of one limited step 103a, hanging pup joint 203 are resisted against on the first limited step 103a, hanging pup joint
203 cannot deviate from downwards.It is that hanging pup joint 203 cannot be deviate from downwards to set the abjection downwards of cone 201 the result is that constraining.Due to sitting
Envelope cone 201 maximum outside diameter be greater than ontology 101 set the internal diameter of section 101a, so set cone 201 can not prolapse upwards, set
The result that cone 201 is unable to prolapse upwards constrains 203 prolapse upwards of hanging pup joint again.It sets stifled 202 and is mounted on hanging pup joint 203
It is interior, it is limited and cannot be moved downwards by the second limited step 203a of hanging pup joint 203, and set stifled 202 outer diameter and be greater than seat
The internal diameter of envelope cone 201 sets 201 restriction of cone and sets stifled 202 prolapse upwards, this guarantees during tubing string is gone into the well, sets
Stifled 202 will not move in the case where bearing external pressure.
The embodiment of the present application also provides it is a kind of using it is described every adopt packer every adopting construction method, it is described every adopting construction
Method includes:
S10: the pressure fluid is injected out of described toroidal cavity；
S20: after the oil pipe 301 rises out to preset distance, the oil pipe 301 is above mentioned, the oil pipe 301 drives described
Set cone 201, the pull rod 302, it is described set stifled 202 and the hanging pup joint 203 rise out together；
S30: the hanging pup joint 203 is connected on flow string, and tripping in is connected with the described of the hanging pup joint 203
Flow string, until being seated in the hanging pup joint 203 until first position-limit mechanism on the seal receptacle 103.
Specifically, in step slo, filling clear water into delivery tubing string first, plays pump and suppress, pressure fluid will be through the ring
The circulation of shape cavity, hydraulic to be passed to outside oil pipe 301 by 301 inner space of oil pipe, final effect is to setting stifled 202 top surface, suspension
203 top surface of pipe nipple and set cone 201 bottom surface on.It acts on and sets stifled 202 top surface, the pressure of 203 top surface of hanging pup joint can produce
Raw downward thrust, but since seal receptacle 103 is fixedly connected with 101 lower end of ontology, downward thrust can not make to set stifled
202, hanging pup joint 203 moves down.And act on and set the pressure of 201 bottom surfaces of cone and can then generate upward thrust, it pushes and sits
Envelope cone 201 is run up.Under the action of thrust, 201 extrusion bodies 101 of cone are set, when thrust is greater than bending for 101 material of ontology
When taking the limit, ontology 101, which will swell, generates permanent deformation, with swelling for ontology 101, causes to set on section 101a outer wall
Sealing ring 102 is compressed tightly against between ontology 101 and sleeve A.When setting cone 201 from the release of 101 top of ontology, pressure is prominent
Zero is so dropped to, packer setting is completed.The internal diameter for setting section 101a of ontology 101 is identical as extension diameter section 101c internal diameter at this time,
Changeover portion 101b disappears, and the sealing ring 102 being extruded plays a dual role of sealing and suspension, such as Fig. 3, Fig. 4.
In step S20, when set cone 201 drive oil pipes 301 play out preset distance after, above mention oil pipe 301, set cone
201 will rise out with oil pipe 301, set the internal diameter of cone 201 because the outer diameter of 302 upper end of pull rod is greater than, therefore setting cone 201 can be with
It pull rod 302 and is connected to setting below pull rod 302 and stifled 202 rises out together, set stifled 202 by the first locking member 401
Hanging pup joint 203 is inconjunction with and is risen out together, the packer after setting and seal receptacle 103 are left behind in well, as shown in Figure 3.
In step s 30, as shown in Fig. 2, Fig. 5 and Fig. 7, after packer setting, after tripping in flow string carries out in well
Continuous oil producing operation.Specifically, being connected with oil well pump 6 on the flow string, can be connected with below the oil well pump 6 outstanding
Pipe nipple 203 is hung, the lower end of hanging pup joint 203 has been connected through a screw thread gas anchor 7, the attachmentes such as 8 are blocked up at bottom.Tripping in is connected with above-mentioned attachment
Flow string when, the outer limited step 103b on hanging pup joint 203 is seated in the first limited step on seal receptacle 103
103a。
Flow string after being seated in will not drive packer living even if having slight wriggling, activity in oil producing operation
It is dynamic, so as to avoid the factor for causing packer to fail because of friction between sealing ring 102 and sleeve A.Flow string tripping in
Afterwards, water-yielding stratum is separated by the sealing between packer and sleeve A, hanging pup joint 203 and seal receptacle 103, and the oil of oil reservoir then passes through
Gas anchor 7 enters to oil well pump 6 and is extracted.
It should be noted that in the present embodiment, the oil well pump 6, which also can according to need, is connected to hanging pup joint 203
Lower section, the submergence of increasing pump, to improve pump efficiency.
In another embodiment, the second locking member is provided between the hanging pup joint 203 and the seal receptacle 103
402, the third groove for accommodating second locking member 402 is provided on the outer wall of the hanging pup joint 203.Described second
The locking force of locking member 402 is greater than first locking member 401.
Second locking member 402 is specially big circlip, and the big circlip is the elastic metallic ring of an opening, and section is in
" interior flat evagination " shape.Although large and small circlip section configuration is identical, cross-sectional area, evagination bevel angle, internal-and external diameter size are respectively not
It is identical, by being adjusted to above-mentioned parameter, the circlip of different locking forces can be designed.When installation, the big circlip peace
It is filled in the third groove, the lower end of hanging pup joint 203 is arranged in the third groove.When being seated in the hanging pup joint 203,
Big circlip can be caught in the lower end of seal receptacle 103 and flick, and evagination inclined-plane can be resisted against the lower end of seal receptacle 103.By
It is greater than first locking member 401 in the locking force of the second locking member 402, therefore even if the first locking member is installed at the same time
401 and second under conditions of locking member 402, can guarantee to set stifled 202 when acting the process upwards, can only be from the first locking
Shake off at part 401, without taking hanging pup joint 203 out of together.
It should be noted that if hanging pup joint 203 has not needed out, the first locking member 401 of installation can not had to, thus anti-
Hanging pup joint 203 is carry when only setting stifled 202 out and is risen out together, the second locking member 402 is only installed at this time.If outstanding
Extension pipe nipple 203 needs to set stifled 202 together to be risen out together, then cannot install the second locking member 402, only install the first locking member 401.
In the present embodiment, described when being equipped with the second locking member 402 between hanging pup joint 203 and seal receptacle 103
The lower end of hanging pup joint 203 is fixedly connected with the first flow string.
Specifically, packer is assembled first, referring to figs. 1 to shown in Fig. 6.Installation sets cone 201 in ontology 101, makes it
The conical surface lean against on changeover portion 101b.Stifled 202 will be set again to be mounted in hanging pup joint 203, be seated in the second limited step
On 203a, the first locking member 401 can be installed, and can also not have to installation.Preferably, the first locking member 401 is not installed.It sets stifled
After 202 are installed in extension diameter section 101c together with hanging pup joint 203, then seal receptacle 103 is installed.The of hanging pup joint 203
Second locking member 402 is installed in three grooves.The oil pumping attachment such as 8, gas anchor 7 successively first is blocked up at bottom according to projected depth to go into the well, then
Hanging pup joint 203 is attached with the first flow string gone into the well, the lower end of the hanging pup joint 203, which is provided with, to be used for
The screw thread of connection.Oil pipe 301 is passed through inside ontology 101 finally, 201 is connect with cone is set, then by pull rod 302 from oil pipe
It passes through in 301, is connect with setting stifled 202.
In the present embodiment, present invention also provides it is a kind of using it is described every adopt packer every adopting construction method, it is described
Include: every adopting construction method
S10: the pressure fluid is injected out of described toroidal cavity；
S20: after the oil pipe 301 rises out to preset distance, the oil pipe 301 is above mentioned, the oil pipe 301 drives described
Cone 201 is set, the pull rod 302, described stifled 202 set and rises out together；
S30: the bottom of second flow string is connected into insertion pipe 501, tripping in is connected with the institute of the insertion pipe 501
The second flow string is stated, until the insertion pipe 501 is inserted into the hanging pup joint 203.
Specifically, in step slo, filling clear water into oil pipe 301 first, plays pump and suppress, pressure fluid is through the annular
Cavity circulation, hydraulic to be passed to outside oil pipe 301 by 301 inner space of oil pipe, final effect is short to stifled 202 top surface, suspension is set
It saves 203 top surfaces and sets on the bottom surface of cone 201.It acts on and sets stifled 202 top surface, the pressure of 203 top surface of hanging pup joint can generate
Downward thrust, because seal receptacle 103 is fixed on the lower end of ontology 101, downward thrust can not make to set stifled 202, suspension short
Section 203 moves down.It acts on and sets the pressure of 201 bottom surfaces of cone and can generate upward thrust, promotion sets the fortune upwards of cone 201
Row.Under the action of thrust, 201 extrusion bodies 101 of cone are set, when thrust is greater than the yield limit of 101 material of ontology, ontology
101, which will swell, generates permanent deformation, with swelling for ontology 101, causes the sealing ring 102 set on section 101a outer wall tight
It is tightly pressed between ontology 101 and sleeve A.When setting cone 201 from the release of 101 top of ontology, pressure drops to zero suddenly, envelope
Completion is set every device.The internal diameter for setting section 101a of ontology 101 is identical as extension diameter section 101c internal diameter at this time, and changeover portion 101b disappears
It loses, the sealing ring 102 being extruded plays a dual role of sealing and suspension, such as Fig. 3, Fig. 4.
In step S20, when set cone 201 drive oil pipes 301 play out preset distance after, above mention oil pipe 301, set cone
201 will rise out with oil pipe 301, set the internal diameter of cone 201 because the outer diameter of 302 upper end of pull rod is greater than, therefore setting cone 201 can be with
It pull rod 302 and is connected to setting below pull rod 302 and stifled 202 rises out together, and hanging pup joint 203 is because by the second locking
The locking effect of part 402 has not had, and the first flow string still stays in underground thereunder for hanging pup joint 203 and connection.
In step s 30, after packer setting, the second flow string of tripping in.Specifically, on second flow string
It is connected with oil well pump 6, connects insertion pipe 501 in 6 or less oil well pump.It is using the second flow string that oil well pump 6 is lower deep to design
After degree, insertion pipe 501 is inserted into hanging pup joint 203.Second flow string and first flow string pass through described
Insertion pipe 501 and hanging pup joint 203 are docked, and complete oil pumping flow string is formed.At this time water-yielding stratum by every adopt packing
Sealing between the ontology 101 of device and oil well casing A, hanging pup joint 203 and packer, insertion pipe 501 and hanging pup joint 203 every
It opens, the oil of oil reservoir then enters oil well pump 6 and be extracted by gas anchor 7.
Specifically, as shown in figure 5, the insertion pipe 501 is the metal circular tube with hollow cavity.The insertion pipe 501
Upper end be equipped with helicitic texture, can be attached with the second flow string, be provided with circlip on the outer wall of the insertion pipe 501
Groove, the circlip groove is for installing first locking member 401, and in the present embodiment, first locking member 401 can be with
Without installation.The positioning step matched with the second limited step 203a is provided on the inner wall of the insertion pipe 501
501a.The insertion pipe 501 passes through positioning step 501a and the second limited step 203a when being inserted into the hanging pup joint 203
It is docked.Multiple sealing rings, the inner wall of insertion pipe 501 are also provided between the insertion pipe 501 and hanging pup joint 203
On be provided with groove for accommodating sealing ring.
As shown in fig. 6, by the way that first flow string is docked the complete life to be formed with second flow string
Production tubing string is split type flow string, using the split type flow string, before packer setting, under hanging pup joint 203
End has been connected with gas anchor 7, the length of the service life such as 8, non-damageable attachment are blocked up in bottom.Therefore if desired oil well pump 6 is examined
Look into, need to extract the second flow string, so that insertion pipe 501 and oil well pump 6 be risen simultaneously, and hanging pup joint 203 with
And the attachmentes such as first flow string of lower section still stay in underground.
The packer that the application embodiment provides carries out pump detection and workover according to split type flow string, and one can keep away
Exempt from packer to rise out with oil well pump 6, and gas anchor 7, bottom block up that the service life such as 8 are long, non-damageable oil pumping attachment can with use
Period relatively short oil well pump 6 separates, and is suspended on packer hereinafter, avoiding when pump detection and workover with pumping up out.In addition, the second production
Tubing string will not influence the work of packer when carrying out oil pumping operation, so as to avoid between sealing ring 102 and sleeve A because
The factor for rubbing and packer being caused to fail.
Based on the offer of the application embodiment every adopting packer construction, embodiment further provides a kind of salvagings by the application
The method of the hanging pup joint 203.
It is short because hanging when tripping in flow string carries out oil pumping operation according to monoblock type flow string as shown in Figure 7
Section 203 is connected in flow string, is as flow string rises or tripping in every time, there is no individually salvage and be seated in ask
Topic.But using the just different of split type pumping pipe string.
As shown in fig. 6, inspection pump when, only insertion pipe 501 need to be extracted from hanging pup joint 203, insertion pipe 501 and more than
Oil well pump 6 risen and come out, then carry out pump detection and workover, and hanging pup joint 203 and gas anchor below 7, bottom block up the attachmentes such as 8 according to
So stay in underground.But these attachmentes of underground may be also required to overhaul or replace after examining pump several times or oil well is because of oil reservoir
It shakes out situations such as needing sand washing to shaft bottom etc., it is necessary to salvage, be overhauled or replaced, then be seated in hanging pup joint 203 again.
When salvaging, fishing tool can fish out lance or oil pipe sliding block trip spear for tubing coupling.It is preferable to use oil pipes in this implementation
Box cupling fishes out lance, because it does not generate any injury to hanging pup joint 203.Specifically, fishing tool is connected to the bottom of tubing string,
Lowering velocity is controlled when down to away from 203 top surface 2m-3m of hanging pup joint, is slowly into fishing tool in hanging pup joint 203,
Add scheduled bit pressure slowly above to mention, if suspending weight incrementss reach the tubing string weight below of hanging pup joint 203, salvages success.
Otherwise fishing tool is transferred again, and bit pressure can slightly increase.
When needing to be seated in hanging pup joint 203 again, the first locking member is installed in the circlip groove of 501 inner wall of insertion pipe
401, then insertion pipe 501 is inserted into the hollow cavity of hanging pup joint 203, depends on the positioning step 501a of insertion pipe 501
On the second limited step 203a of hanging pup joint 203.At the same time, the first locking member 401 enters 203 inner wall of hanging pup joint
On the first groove in, insertion pipe 501 and hanging pup joint 203 are locked together.The finally third on 203 outer wall of hanging pup joint
Second locking member 402 is installed in groove.It can be further on the inner wall of the insertion pipe 501, the outer wall of the hanging pup joint 203
It is arranged fluted, sealing ring is installed in groove.
The upper end of insertion pipe 501 is connected with tubing string, and tubing string is by 203 tripping in of assembled insertion pipe 501 and hanging pup joint
To sleeve A.As shown in figure 5, working as under the suspension assembly that insertion pipe 501 and hanging pup joint 203 form to the above 2m- of packer
Lowering velocity is controlled when 3m, is slowly into suspension assembly in seal receptacle 103.Add certain bit pressure, preferably 30KN, bores
Pressure passes to insertion pipe 501, passes to hanging pup joint 203 further through the positioning step 501a of insertion pipe 501, causes the second locking member
402 are compressed and are passed through from seal receptacle 103.When the outer limited step 103b of hanging pup joint 203 is pressed in 103 upper end of seal receptacle
When the first limited step 103a, the second locking member 402 comes out and flicks from 103 lower end surface of seal receptacle simultaneously, and evagination inclined-plane leans on
On 103 lower end inclined-plane of seal receptacle, by suspension assembly lock in packer, being seated in for hanging pup joint 203 is completed.
It is seated in rear upper lifting pipe post, upper lifting force acts on insertion pipe 501, and by the first locking member 401, and it is short to pass to suspension
On section 203 and the second locking member 402, that is to say, that upper lifting force acts on the first locking member 401 and the second locking member 402 simultaneously.
First locking member 401 and respectively small, the big circlip of the second locking member 402, although section configuration is identical, cross-sectional area, evagination
Bevel angle, internal-and external diameter size are different, by adjusting these three parameters, can design the circlip of different locking forces
Come.
In the present embodiment, the locking force of the second locking member 402 can be designed as 50kN, the lock of the first locking member 401
Clamp force degree can be designed as 10kN, and the two differs 5 times.So upper lifting pipe post, insertion pipe 501 can only after being seated in the suspension assembly
It is disengaged from the first locking member 401, without disengaging from the second locking member 402, therefore hanging pup joint 203 is in the second locking member
It has been stayed in packer under the action of 402.After insertion pipe 501 plays ground, according to intact situation, it is determined whether replacement sealing ring
With the first locking member 401.
The application embodiment provide every adopting packer and every adopting construction method, suitable for no killing well Operating Pressure
Construction site mainly has following advantages:
1, it should can be realized the relative separation of flow string and packer after adopting packer setting, can eliminate because of life
Produce the principal elements that string creep and packing element shoulder prominent two causes greatly packer to fail, in addition when examining pump packer not with
Oil pumping pumps up out, avoids passively replacing.
2, oil producing operation, packer setting front overhang should be carried out according to split type flow string after adopting packer setting
The service life length, non-damageable oil pumping attachment such as the lower section for hanging pipe nipple has been connected with gas anchor, bottom is blocked up, if desired to oil well pump
It is checked, it is only necessary to the second flow string above hanging pup joint is extracted, thus avoid gas anchor when pump detection and workover, bottom stifled etc.
Attachment pumps up out with oil pumping.
3, oil producing operation is carried out according to monoblock type tubing string, if influencing oil well pump lower-continuous mapping because of packer set position
When, can by under oil well pump to every adopt packer hereinafter, increasing pump submergence, improve pump efficiency.
Above-described embodiment is only the technical concepts and features for illustrating the application, and its object is to allow person skilled in the art
Scholar can understand present context and implement accordingly, and the protection scope of the application can not be limited with this.It is all according to the application
Equivalent change or modification made by Spirit Essence should all cover within the scope of protection of this application.
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 to
The open "a" or "an" for describing element, ingredient, component or step is not intended 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 provided example all will be aobvious and easy for a person skilled in the art
See.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring 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 benefit 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 applicant the theme is not thought of as it is disclosed
Apply for a part of theme.
Claims (10)
1. a kind of every adopting packer characterized by comprising
Ontology, the ontology are hollow tube body, have opposite top and bottom, the ontology is successively wrapped from lower end to upper end
Include: extension diameter section, changeover portion set section, and the outer diameter of the extension diameter section sets section greater than described, the ring on the outer wall for setting section
Equipped with multiple sealing rings；
Deliver tubing string, comprising: oil pipe and the pull rod being set in inside the oil pipe, wherein the lower end of the oil pipe and set cone
It is fixedly connected to form setting mechanism, the lower end of the pull rod and sets and stifled be fixedly connected to form plugging mechanism, the seat plugging tool
There is solid construction, realization is connect with the pull rod and is blocked；
Toroidal cavity is formed between the setting mechanism and the plugging mechanism, pressure fluid can circulate and make through the toroidal cavity
With to the bottom surface for setting cone, it is described set cone can be from the extension diameter section through the changeover portion under the action of pressure fluid
It slides to described and sets section, it is described to set section and the sealing ring is softened.
2. as described in claim 1 every adopting packer, which is characterized in that the lower end of the ontology is additionally provided with seal receptacle, institute
Seal receptacle is stated with hollow cavity, the seal receptacle is built-in with hanging pup joint, between the seal receptacle and the hanging pup joint
It is provided with the first position-limit mechanism deviate from for limiting the hanging pup joint from the lower end of the ontology；
The hanging pup joint has a hollow cavity, described to set the stifled inside for being mounted on the hanging pup joint, it is described set it is stifled
It is provided between the hanging pup joint and described set stifled second deviate from from the lower end of the hanging pup joint for limiting and limit
Mechanism.
3. as described in claim 1 every adopting packer, which is characterized in that the pull rod has the solid body of rod, the body of rod
Lower end set stifled upper end with described and be fixedly connected, the upper end of the body of rod is provided with lug boss, the outer diameter of the lug boss
Greater than the internal diameter for setting cone, and it is less than the internal diameter of the oil pipe.
4. as claimed in claim 3 every adopting packer, which is characterized in that the outer diameter of the body of rod and it is described set cone internal diameter it
Between gap be not less than 6mm.
5. as claimed in claim 2 every adopting packer, which is characterized in that the hanging pup joint and described set are arranged between stifled
There is the first locking member, the first groove is provided on the inner wall of the hanging pup joint, described set is provided with second on stifled outer wall
Groove, first groove and second groove match the cavity to be formed for accommodating first locking member.
6. as claimed in claim 2 every adopting packer, which is characterized in that be arranged between the hanging pup joint and the seal receptacle
There is the second locking member, the third groove for accommodating second locking member is provided on the outer wall of the hanging pup joint.
7. as claimed in claim 5 every adopting packer, which is characterized in that the hanging pup joint and described set are arranged between stifled
There is the second locking member, the third groove for accommodating second locking member is provided on the outer wall of the hanging pup joint, it is described
The locking force of second locking member is greater than first locking member.
8. as claimed in claims 6 or 7 every adopting packer, which is characterized in that the lower end of the hanging pup joint is fixedly connected with
First flow string.
9. a kind of every adopting construction method, which is characterized in that should be using as claimed in claim 5 every adopting envelope every adopting construction method
It is realized every device, operating procedure are as follows:
The pressure fluid is injected out of described toroidal cavity；
After the oil pipe rises to preset distance, above mention the oil pipe, the oil pipe drive described in set cone, the pull rod,
It is described to set the stifled and hanging pup joint and rise out together；
The hanging pup joint is connected on flow string, tripping in is connected with the flow string of the hanging pup joint, until will
The hanging pup joint is seated in until first position-limit mechanism on the seal receptacle.
10. a kind of every adopting construction method, which is characterized in that should be using as claimed in claim 8 every adopting every adopting construction method
What packer was realized, operating procedure are as follows:
The pressure fluid is injected out of described toroidal cavity；
After the oil pipe rises to preset distance, above mention the oil pipe, the oil pipe drive described in set cone, the pull rod,
Described set stifled is risen out together；
The bottom of second flow string is connected into insertion pipe, tripping in is connected with second flow string of the insertion pipe, until
Until the insertion pipe is inserted into the hanging pup joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910256755.0A CN109944568A (en) | 2019-04-01 | 2019-04-01 | One kind is every adopting packer and every adopting construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910256755.0A CN109944568A (en) | 2019-04-01 | 2019-04-01 | One kind is every adopting packer and every adopting construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109944568A true CN109944568A (en) | 2019-06-28 |
Family
ID=67012387
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910256755.0A Pending CN109944568A (en) | 2019-04-01 | 2019-04-01 | One kind is every adopting packer and every adopting construction method |
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| Country | Link |
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| CN (1) | CN109944568A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110735607A (en) * | 2019-12-02 | 2020-01-31 | 延长油田股份有限公司南泥湾采油厂 | oil-well pump gap bridge pressing setting packer device and application method |
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