CN109386247A - A kind of expandable casing patching time is slotting every tool of adopting and application method - Google Patents
A kind of expandable casing patching time is slotting every tool of adopting and application method Download PDFInfo
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- CN109386247A CN109386247A CN201811426022.9A CN201811426022A CN109386247A CN 109386247 A CN109386247 A CN 109386247A CN 201811426022 A CN201811426022 A CN 201811426022A CN 109386247 A CN109386247 A CN 109386247A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 193
- 238000003780 insertion Methods 0.000 claims abstract description 78
- 230000037431 insertion Effects 0.000 claims abstract description 78
- 238000002627 tracheal intubation Methods 0.000 claims abstract description 68
- 239000003129 oil well Substances 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000004873 anchoring Methods 0.000 claims description 10
- 238000013461 design Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005304 joining Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 11
- 238000005260 corrosion Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 10
- 230000006872 improvement Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007717 exclusion Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000005906 menstruation Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/10—Reconditioning of well casings, e.g. straightening
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
It returns and is inserted every tool of adopting and application method the invention belongs to casing damage well Treatment process field more particularly to a kind of expandable casing patching.Mainly by expansion tube body, the part such as bottom is stifled, sealing insertion tube and sealing intubation forms.The tool needle is run-down to big section of casing corrosion to lead to oil-water-layer connection, without effectively setting section the problem of, provide that a kind of expandable casing patching is outstanding to be inserted every adopting abatement tools, existing casing patching technology construction risk can effectively be solved and difficulty is big, at high cost, and it is conventional set bad adaptability every the technology of adopting, every adopting validity period short problem.It is run-down, oil-water-layer connection oil well suitable for big section of corrosion of sleeve in oil field to reproduce improvement.
Description
Technical field
The invention belongs to casing damage well Treatment process field more particularly to a kind of expandable casing patching return insert every tool of adopting and
Application method.
Background technique
Expandable casing patching and packer are every the major technique that the technology of adopting all is that casing damaged well is administered.Expandable casing patching is casing damaged well
A kind of very effective means administered realize repairing and permanent seal at casing leak that can be run-down to burn into, after subsidy
Expansion tube be permanently tightly attached to impaired internal surface of sleeve pipe, subsidy effect is preferable.And packer every adopt administer skill be suitable for pit corrosion,
The well of broken Duan Buchang is covered, Processing tecchnics are simple, and cost is relatively low.But big for casing section of corrosion is run-down to lead to oil-water-layer connection, nothing
The oil well of section is effectively set, can be administered using casing patching, but big section subsidy will lead to construction risk and difficulty is larger, controls
Reason expense is even more to be multiplied；And packer sets adaptability every adopting to administer to big section corrosion failure, without the well for effectively setting section
Difference, short every adopting validity period, effect is limited.
Summary of the invention
An object of the present invention is to provide one kind and leads to oil-water-layer connection for big section of casing corrosion is run-down, effectively sets
The expandable casing patching of section, which returns, to be inserted every adopting tool；It is small the second object of the present invention is to provide a kind of technology construction risk, be easy to implement,
Tube expansion at low cost subsidizes back the application method inserted every tool of adopting；The third object of the present invention is to provide one kind and sets adaptability
By force, it inserts every adopting tool every adopting validity period long expandable casing patching and return.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of expandable casing patching time is slotting to include at least casing every adopting tool, and the inner sidewall of the casing is connected with expansion tube sheet
Body, expansion tube body inner sidewall bottom are fixedly installed pressure-bearing land, and the top of pressure-bearing land is connected with bottom and blocks up, and bottom is blocked up screw thread and connected
It is connected to sealing insertion tube, sealing insertion tube lower end is connect with oil pipe, and oil pipe lower end is connected with ball seat, and ball seat set is provided on ball seat；It is close
Envelope insertion tube is plugged with sealing intubation.
The stifled lower inside that expansion tube body is socketed in by sealing element in the bottom.
The stifled sealing element with the lower inside of expansion tube body in the bottom is the first sealing rubber ring
The stifled lower end outside in the bottom is provided with outer groove, and the groove top seat of outer groove is in the top of pressure-bearing land.
The sealing insertion tube internal channel is from top to bottom successively including normal reach, the first seal section and pressure bearing step section, just
Normal section is connect with pressure bearing step section by the first seal section, and the internal diameter of normal reach, the first seal section and pressure bearing step section successively subtracts
It is small；The outer diameter of sealing intubation lower end is matched with the first seal section internal diameter.
The seal section and pressure-bearing land section inner sidewall of the sealing insertion tube are coated with layers of chrome；The upper and lower ends of sealing insertion tube are set
It is equipped with tubing thread.
The sealing intubation is made of oil pipe variable buckle connector and sealing intubation pipe shaft；The oil pipe variable buckle connector lower end inside
Wall is threadedly coupled with sealing intubation pipe shaft upper end lateral wall, and sealing intubation pipe shaft lower part is provided with the second seal section, the second sealing
The lateral wall of section is provided with sealing mechanism, and the outer diameter of the second seal section is less than the outer diameter of sealing intubation pipe shaft.
The stifled lower inside that expansion tube body is socketed in by the first sealing rubber ring in the bottom, the stifled lower end outside in bottom are set
It is equipped with outer groove, the groove top seat of outer groove is in the top of pressure-bearing land；The sealing insertion tube internal channel successively wraps from top to bottom
Normal reach, the first seal section and pressure bearing step section are included, normal reach is connect with pressure bearing step section by the first seal section, normal reach,
First seal section and the internal diameter of pressure bearing step section are sequentially reduced；The outer diameter of sealing intubation lower end is matched with the first seal section internal diameter；
The seal section and pressure-bearing land section inner sidewall of the sealing insertion tube are coated with layers of chrome；The upper and lower ends of sealing insertion tube are provided with oil pipe
Button；The sealing intubation is made of oil pipe variable buckle connector and sealing intubation pipe shaft；The oil pipe variable buckle connector lower end inside
Wall is threadedly coupled with sealing intubation pipe shaft upper end lateral wall, and sealing intubation pipe shaft lower part is provided with the second seal section, the second sealing
The lateral wall of section is provided with sealing mechanism, and the outer diameter of the second seal section is less than the outer diameter of sealing intubation pipe shaft；Described second is close
The sealing mechanism of envelope section lateral wall setting is made of three groups of seal grooves, and every group is provided with two seals slot, and every road sealing groove is pacified
Equipped with the second sealing rubber ring；Positioning step is arranged in the sealing intubation lower part, and positioning step is connected in sealing insertion tube just
The joining place of normal section and the second seal section.
A kind of expandable casing patching returns the application method inserted every tool of adopting, first will expansion tube body anchoring and close when construction
Insertion tube built-up section is sealed by design requirement connection expansion tube body G.I.H, steel ball is put into, then suppresses and push in expansion-head
The expanding subsidy molding of row cold-extruded expansion tube makes to expand tube body and casing wall sealing is anchored, acts expansion tube sheet after the completion of subsidy
Body, G.I.H after then again connecting sealing intubation with completion tubular column by design are connect with expansion tube body lower end in well
Insertion tube is sealed to slotting, it is ensured that sealing intubation is connected closely with sealing insertion tube, adds pressure appropriate, completes to seal to be intubated back and insert, this
When top casing annulus and separated with oil reservoir, upper formation set one's water breaks can only be stored in casing annulus, no longer with oil reservoir link up；
If oil well needs pump detection and workover, without being salvaged to the anchoring of expansion tube body and sealing insertion tube, it need to only extract sealing and insert
It has managed out flow string, has completed inspection pump, checked and safeguarded after sealing intubation sealing that G.I.H is to slotting sealing again, continued every adopting
Production；
If oil well needs tripping in measure tubing string, before measure operation, it is necessary first to pull bottom out with fishing lance and block up and seal insertion tube, guarantee
Operation pit shaft is unimpeded, after the completion of operation, checks and safeguard that bottom stifled, sealing insertion tube and sealing intubation seal assembly are intact, again under
Enter that bottom is stifled and sealing insertion tube, when complete well, which returns, inserts sealing intubation, continues every adopting production.
Beneficial effects of the present invention: oil-water-layer connection, nothing is caused effectively to set asking for section for big section of casing corrosion is run-down
Topic is inserted every adopting abatement tools the present invention provides a kind of expandable casing patching is outstanding.The present invention is described, casing by casing
The top of the expansion tube body of inner sidewall connection, the pressure-bearing land of expansion tube body inner sidewall bottom fixed setting, pressure-bearing land
The bottom being connected with is stifled, the stifled sealing insertion tube being threadedly coupled in bottom, and sealing insertion tube lower end is connect with oil pipe, and oil pipe lower end is connected with ball
, ball seat set is provided on ball seat；Sealing insertion tube is plugged with the technical solution of sealing intubation, efficiently solves existing casing patching
Technology construction risk and difficulty are big, at high cost, and conventional top water exclusion technology sets bad adaptability, short ask every adopting validity period
Topic.For big section of corrosion of sleeve in oil field be run-down, oil-water-layer connection oil well reproduces improvement and provides a kind of cost-effective governing measure.
Detailed description of the invention
Attached drawing described here is only used for task of explanation, and is not intended to limit model disclosed by the invention in any way
It encloses.In addition, shape and proportional sizes of each component in figure etc. are only schematical, it is used to help the understanding of the present invention, and
It is not the specific shape and proportional sizes for limiting each component of the present invention.Those skilled in the art under the teachings of the present invention, can
Implement the present invention to select various possible shapes and proportional sizes as the case may be.
Fig. 1 is that expansion tube is anchored and seals insertion tube schematic diagram；
Fig. 2 is sealing intubation schematic diagram；
Fig. 3 is expansion tube anchoring sealing insertion tube and sealing cannula combination schematic diagram.
In figure: 1- casing；2- expands tube body；The bottom 3- is stifled；4- pressure-bearing land；The first sealing rubber ring of 5-；6- seals insertion tube；
7- oil pipe；8- ball seat；9- ball seat set；10- hollow steel ball；11- oil pipe variable buckle connector；12- sealing intubation；The second sealant of 13-
Circle；14- sealing intubation pipe shaft；15- positioning step；The second seal section of 16-；17- normal reach；The first seal section of 18-；19- pressure-bearing
Step section.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
Embodiment one:
A kind of expandable casing patching as shown in Figs. 1-3, which returns, to be inserted every adopting tool, and casing 1, the inner sidewall of the casing 1 are included at least
It is connected with expansion tube body 2, expansion 2 inner sidewall bottom of tube body is fixedly installed pressure-bearing land 4, and the top of pressure-bearing land 4 connects
It is connected to bottom stifled 3, bottom stifled 3 is threaded with sealing insertion tube 6, and sealing 6 lower end of insertion tube is connect with oil pipe 7, and 7 lower end of oil pipe is connected with ball
Seat 8 is provided with ball seat set 9 on ball seat 8；Sealing insertion tube 6 is plugged with sealing intubation 12.
In actual use, the working principle of the invention and the course of work are as follows:
Expandable casing patching, which returns, inserts functional, sealing segment length, subsidy mainly in combination with expandable casing patching sealing anchoring every tool of adopting
It is afterwards and the advantages of promoting menstruation big (being greater than 105mm) and conventional every adopting simple easily operated advantage.When construction, first by expansion tube sheet
The anchoring of body 2 and sealing 6 built-up section of insertion tube are put into steel ball, are then suppressed by design requirement connection expansion 2 G.I.H of tube body
The expanding subsidy molding of expansion-head uplink cold-extruded expansion tube is pushed, makes to expand tube body 2 and the sealing of 1 wall of casing is anchored, subsidy is completed
After play out expansion tube body 2, then again by design will sealing intubation 12 connect with completion tubular column after expand in G.I.H, with well
The sealing insertion tube 6 of 2 lower end of tube body connection is to slotting, it is ensured that sealing intubation 12 is connected closely with sealing insertion tube 6, adds pressure appropriate
Power is completed sealing intubation 12 times and is inserted, 1 annular space of casing on top and separates at this time with oil reservoir, and upper formation set one's water breaks can only be stored in
1 annular space of casing is no longer linked up with oil reservoir, it is ensured that oily well capacity effectively plays.
In addition, if, without being salvaged to the anchoring of expansion tube body 2 and sealing insertion tube 6, only being needed when oil well needs pump detection and workover
The flow string out of sealing intubation 12 is extracted, inspection pump is completed, check and safeguards that sealing is intubated after 12 sealings G.I.H pair again
Sealing is inserted, is continued every adopting production.
If oil well needs tripping in measure tubing string, before measure operation, it is necessary first to pull bottom stifled 3 and sealing insertion tube out with fishing lance
6, guarantee that operation pit shaft is unimpeded, after the completion of operation, checks and safeguard that 3, sealing insertion tube 6 is blocked up at bottom and sealing 12 seal assemblies of intubation are complete
Good, tripping in bottom stifled 3 and sealing insertion tube 6 again, when complete well, which returns, inserts sealing intubation 12, continues every adopting production.
It inserts every adopting abatement tools the present invention provides a kind of expandable casing patching is outstanding.The present invention passes through casing, described, set
The expansion tube body of the inner sidewall connection of pipe, the fixed setting of expansion tube body inner sidewall bottom pressure-bearing land, pressure-bearing land
The bottom that top is connected with is stifled, the stifled sealing insertion tube being threadedly coupled in bottom, and sealing insertion tube lower end is connect with oil pipe, and oil pipe lower end is connected with
Ball seat is provided with ball seat set on ball seat；Sealing insertion tube is plugged with the technical solution of sealing intubation, efficiently solves existing casing and mends
Patch technology construction risk and difficulty are big, at high cost, and conventional top water exclusion technology sets bad adaptability, short every adopting validity period
Problem.For big section of corrosion of sleeve in oil field be run-down, oil-water-layer connection oil well reproduces improvement and provides a kind of cost-effective improvement hand
Section.
Embodiment two:
A kind of expandable casing patching as shown in figures 1 and 3 return insert every adopting tool, with embodiment one the difference is that: it is described
Bottom stifled 3 lower insides for expanding tube body 2 are socketed in by sealing element.
The sealing element at the preferably bottom stifled 3 and the lower inside of expansion tube body 2 is the first sealing rubber ring 5.
In actual use, bottom stifled 3 is socketed in the lower inside of expansion tube body 2 by sealing element, so that casing patching
Effect is more preferable, and especially sealing element uses the first sealing rubber ring 5, can not only preferably implement its sealing function, and effective
The cost of construction is reduced, meanwhile, so that bottom stifled 3 and the connection of expansion tube body 2 are safer, close.
Embodiment three:
A kind of expandable casing patching as shown in figs. 1 and 3 return insert every adopting tool, with embodiment one the difference is that: it is described
The lower end outside at bottom stifled 3 is provided with outer groove, and the groove top seat of outer groove is in the top of pressure-bearing land 4.
In actual use, the setting of outer groove, so that expansion tube body 2 is more consolidated with being connected for insertion tube 6 is sealed.
Example IV:
A kind of expandable casing patching as shown in Figs. 1-3 return insert every adopting tool, with embodiment one the difference is that: described is close
Seal 6 internal channel of insertion tube from top to bottom successively include normal reach 17, the first seal section 18 and pressure bearing step section 19, normal reach 17 with hold
The stage 19 present a theatrical performance as the last item on a programme by the connection of the first seal section 18, the internal diameter of normal reach 17, the first seal section 18 and pressure bearing step section 19 is successively
Reduce；The outer diameter of 12 lower ends of sealing intubation is matched with 18 internal diameter of the first seal section.
The seal section and pressure-bearing land section inner sidewall of the preferably sealing insertion tube 6 are coated with layers of chrome；Seal insertion tube 6
Upper and lower ends are provided with tubing thread.
Preferably positioning step 15 is arranged in 12 lower parts of sealing intubation, and positioning step 15 is connected in sealing insertion tube 6 just
The joining place of normal section 17 and the second seal section 16.
The sealing mechanism of preferably described 16 lateral wall of the second seal section setting is made of three groups of seal grooves, and every group sets
It is equipped with two seals slot, every road sealing groove is mounted on the second sealing rubber ring 13.
In actual use, the setting of sealing insertion tube 6 and sealing intubation 12 makes to seal so that installation of the invention is convenient
Insertion tube 6 is closer, stable with being connected for sealing intubation 12, and sealing effect is more preferable.It seals in the seal section and pressure-bearing land section of insertion tube 6
Side wall is coated with layers of chrome, can effectively reduce corrosion of the erosion to side wall, and extend sealing insertion tube 6 uses the time, effectively
It solves the problems, such as short every adopting validity period.The upper and lower ends of sealing insertion tube 6 are provided with tubing thread, so that the connection between component is more
Add it is firm, the present embodiment use tubing thread be EU tubing thread, as long as the function of tubing thread can be realized well, it can also be used
The tubing thread of its type.
Embodiment five:
A kind of expandable casing patching as shown in Figs. 1-3, which returns, to be inserted every adopting tool, with embodiment one the difference is that: the bottom is stifled
3 are socketed in the lower inside of expansion tube body 2 by the first sealing rubber ring 5, and the lower end outside at bottom stifled 3 is provided with outer groove, outside
The groove top seat of annular groove is in the top of pressure-bearing land 4；6 internal channel of sealing insertion tube from top to bottom successively include normal reach 17,
First seal section 18 and pressure bearing step section 19, normal reach 17 are connect with pressure bearing step section 19 by the first seal section 18, normal reach
17, the first seal section 18 and the internal diameter of pressure bearing step section 19 are sequentially reduced；The outer diameter and the first seal section of 12 lower ends of sealing intubation
The matching of 18 internal diameters；The seal section and pressure-bearing land section inner sidewall of the sealing insertion tube 6 are coated with layers of chrome；Above and below sealing insertion tube 6
Both ends are provided with tubing thread；The sealing intubation 12 is made of oil pipe variable buckle connector 11 and sealing intubation pipe shaft 14；Described
11 lower inner side wall of oil pipe variable buckle connector is threadedly coupled with sealing intubation 14 upper end lateral wall of pipe shaft, sealing intubation 14 lower part of pipe shaft
It is provided with the second seal section 16, the lateral wall of the second seal section 16 is provided with sealing mechanism, and the outer diameter of the second seal section 16 is less than
The outer diameter of sealing intubation pipe shaft 14；The sealing mechanism of second seal section, the 16 lateral wall setting is made of three groups of seal grooves,
Every group is provided with two seals slot, and every road sealing groove is mounted on the second sealing rubber ring 13；The sealing is intubated 12 lower parts and sets
Positioning step 15 is set, positioning step 15 is connected to the joining place of normal reach 17 and the second seal section 16 in sealing insertion tube 6.
In actual use, expandable casing patching returns slotting good mainly in combination with expandable casing patching sealing anchoring performance every tool of adopting
Good, sealing segment length, it is after subsidy and the advantages of promoting menstruation big (being greater than 105mm) and conventional every adopting simple easily operated advantage.Construction
When, expansion tube body 2 is anchored and is sealed 6 built-up section of insertion tube first and presses design requirement connection expansion 2 G.I.H of tube body,
Steel ball is put into, then suppresses and pushes the expanding subsidy molding of expansion-head uplink cold-extruded expansion tube, make to expand tube body 2 and 1 wall of casing
Sealing anchoring, subsidy after the completion of rise expansion tube body 2, then again by design will sealing intubation 12 connect with completion tubular column after under
Enter in well, with the sealing insertion tube 6 that expansion 2 lower end of tube body is connect in well to slotting, it is ensured that positioning step 15 of sealing intubation 12
In the normal reach of sealing insertion tube 6 and the joining place of seal section, add pressure appropriate, completes sealing intubation 12 times and insert, at this time top
1 annular space of casing and separated with oil reservoir, upper formation set one's water breaks can only be stored in 1 annular space of casing, no longer with oil reservoir link up, it is ensured that oil
Well capacity effectively plays.
In addition, if, without being salvaged to the anchoring of expansion tube body 2 and sealing insertion tube 6, only being needed when oil well needs pump detection and workover
The flow string out of sealing intubation 12 is extracted, inspection pump is completed, check and safeguards that sealing is intubated after 12 sealings G.I.H pair again
Sealing is inserted, is continued every adopting production.
If oil well needs tripping in measure tubing string, before measure operation, it is necessary first to pull bottom stifled 3 and sealing insertion tube out with fishing lance
6, guarantee that operation pit shaft is unimpeded, after the completion of operation, checks and safeguard that 3, sealing insertion tube 6 is blocked up at bottom and sealing 12 seal assemblies of intubation are complete
Good, tripping in bottom stifled 3 and sealing insertion tube 6 again, when complete well, which returns, inserts sealing intubation 12, continues every adopting production.
In actual use, seal member, seal member can be equipped between the upper outside at bottom stifled 3 and expansion tube body 2
For O-ring seals；It seals 6 upper and lower ends of insertion tube and designs EU tubing thread, sealing 6 upper end of insertion tube is connect with bottom stifled 3, seals insertion tube 6
Lower end with 1~3 27/8Oil pipe 7 connects, seat of receiving under oil pipe 7.Ball seat set 9 is provided on ball seat 8, expansion tube body 2 is subsidized
When investment steel ball and ball seat 8 cooperate pressure-bearing.12 three groups of sealing mechanisms of setting of sealing intubation, every group of sealing mechanism is by two seals slot
Composition, seal groove install corresponding model O-ring seal, and positioning step is arranged in sealing intubation lower end.Sealing intubation 13 lower end of ontology
The positioning step of setting is withstood in pressure-bearing land 4
The present invention big section of casing corrosion it is run-down lead to oil-water-layer connection, without effectively setting section aiming at the problem that, the present invention provides
A kind of expandable casing patching is outstanding to be inserted every adopting abatement tools, and existing casing patching technology construction risk and difficulty can be effectively solved
Greatly, at high cost, and conventional top water exclusion technology sets bad adaptability, every adopting validity period short problem.It is big section of sleeve in oil field
Corrode run-down, oil-water-layer connection oil well and reproduce improvement and provides a kind of cost-effective governing measure.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as
Its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " first ", "
The second " feature can explicitly or implicitly include at least one of the features.
Technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
Claims (9)
- Insert 1. a kind of expandable casing patching returns every adopting tool, include at least casing (1), it is characterised in that: the casing (1) it is interior Side wall is connected with expansion tube body (2), and expansion tube body (2) inner sidewall bottom is fixedly installed pressure-bearing land (4), pressure-bearing land (4) top is connected with bottom and blocks up (3), and bottom blocks up (3) and is threaded with sealing insertion tube (6), seals insertion tube (6) lower end and oil pipe (7) Connection, oil pipe (7) lower end are connected with ball seat (8), and ball seat set (9) are provided on ball seat (8)；Sealing insertion tube (6) is plugged with sealing It is intubated (12).
- It inserts 2. a kind of expandable casing patching as described in claim 1 returns every adopting tool, it is characterised in that: it is logical that (3) are blocked up at the bottom Cross the lower inside that sealing element is socketed in expansion tube body (2).
- Insert 3. a kind of expandable casing patching as claimed in claim 2 returns every adopting tool, it is characterised in that: the bottom block up (3) with The sealing element for expanding the lower inside of tube body (2) is the first sealing rubber ring (5).
- It inserts 4. a kind of expandable casing patching as claimed in any one of claims 1-3 returns every adopting tool, it is characterised in that: described The lower end outside that (3) are blocked up at bottom is provided with outer groove, and the groove top seat of outer groove is in the top of pressure-bearing land (4).
- It inserts 5. a kind of expandable casing patching as described in claim 1 returns every adopting tool, it is characterised in that: the sealing insertion tube (6) internal channel successively includes normal reach (17), the first seal section (18) and pressure bearing step section (19), normal reach (17) from top to bottom It is connect with pressure bearing step section (19) by the first seal section (18), normal reach (17), the first seal section (18) and pressure bearing step section (19) internal diameter is sequentially reduced；The outer diameter of sealing intubation (12) lower end is matched with the first seal section (18) internal diameter.
- It inserts 6. a kind of expandable casing patching as claimed in claim 5 returns every adopting tool, it is characterised in that: the sealing insertion tube (6) seal section and pressure-bearing land section inner sidewall is coated with layers of chrome；The upper and lower ends of sealing insertion tube (6) are provided with tubing thread.
- It inserts 7. a kind of expandable casing patching according to claim 1 returns every adopting tool, it is characterised in that: the sealing intubation (12) it is made of oil pipe variable buckle connector (11) and sealing intubation pipe shaft (14)；Described oil pipe variable buckle connector (11) lower inner side wall It is threadedly coupled with sealing intubation pipe shaft (14) upper end lateral wall, sealing intubation pipe shaft (14) lower part is provided with the second seal section (16), the lateral wall of the second seal section (16) is provided with sealing mechanism, and the outer diameter of the second seal section (16) is less than sealing intubation pipe The outer diameter of body (14).
- It inserts 8. a kind of expandable casing patching returns as defined in claim 1 every adopting tool, it is characterised in that: the bottom is stifled (3) lower inside of expansion tube body (2) is socketed in by the first sealing rubber ring (5), the lower end outside that (3) are blocked up at bottom is provided with outer Annular groove, the groove top seat of outer groove is in the top of pressure-bearing land (4)；Described sealing insertion tube (6) internal channel successively wraps from top to bottom Include normal reach (17), the first seal section (18) and pressure bearing step section (19), normal reach (17) and pressure bearing step section (19) pass through the One seal section (18) connection, the internal diameter of normal reach (17), the first seal section (18) and pressure bearing step section (19) are sequentially reduced；Sealing The outer diameter of intubation (12) lower end is matched with the first seal section (18) internal diameter；The seal section and bearing ring of the sealing insertion tube (6) Platform section inner sidewall is coated with layers of chrome；The upper and lower ends of sealing insertion tube (6) are provided with tubing thread；The sealing intubation (12) is by oil pipe Variable buckle connector (11) and sealing intubation pipe shaft (14) composition；Oil pipe variable buckle connector (11) lower inner side wall and sealing is intubated Pipe shaft (14) upper end lateral wall is threadedly coupled, and sealing intubation pipe shaft (14) lower part is provided with the second seal section (16), the second sealing The lateral wall of section (16) is provided with sealing mechanism, and the outer diameter of the second seal section (16) is less than the outer diameter of sealing intubation pipe shaft (14)； The sealing mechanism of second seal section (16) the lateral wall setting is made of three groups of seal grooves, and every group is provided with two seals Slot, every road sealing groove are mounted on the second sealing rubber ring (13)；Sealing intubation (12) lower part setting positioning step (15), Positioning step (15) is connected to the normal reach (17) in sealing insertion tube (6) and the joining place of the second seal section (16).
- 9. a kind of expandable casing patching as described according to claim 1 any one of -8 returns the application method inserted every tool of adopting, It is characterized in that: being anchored and sealing insertion tube built-up section when construction for expansion tube body first and connect expansion tube sheet by design requirement Body G.I.H puts into steel ball, then suppresses and pushes the expanding subsidy molding of expansion-head uplink cold-extruded expansion tube, makes to expand tube body It seals and is anchored with casing wall, act expansion tube body after the completion of subsidy, then again connect sealing intubation with completion tubular column by design Rear G.I.H is connect, with the sealing insertion tube that expansion tube body lower end is connect in well to slotting, it is ensured that sealing intubation is held in the mouth with insertion tube is sealed It connects close, adds pressure appropriate, complete sealing and be intubated back slotting, the casing annulus on top and separated at this time with oil reservoir, upper formation Set one's water breaks can only be stored in casing annulus, no longer link up with oil reservoir；If oil well needs pump detection and workover, without being salvaged to the anchoring of expansion tube body and sealing insertion tube, it need to only extract sealing and insert It has managed out flow string, has completed inspection pump, checked and safeguarded after sealing intubation sealing that G.I.H is to slotting sealing again, continued every adopting Production；If oil well needs tripping in measure tubing string, before measure operation, it is necessary first to pull bottom out with fishing lance and block up and seal insertion tube, guarantee Operation pit shaft is unimpeded, after the completion of operation, checks and safeguard that bottom stifled, sealing insertion tube and sealing intubation seal assembly are intact, again under Enter that bottom is stifled and sealing insertion tube, when complete well, which returns, inserts sealing intubation, continues every adopting production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811426022.9A CN109386247A (en) | 2018-11-27 | 2018-11-27 | A kind of expandable casing patching time is slotting every tool of adopting and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811426022.9A CN109386247A (en) | 2018-11-27 | 2018-11-27 | A kind of expandable casing patching time is slotting every tool of adopting and application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109386247A true CN109386247A (en) | 2019-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811426022.9A Pending CN109386247A (en) | 2018-11-27 | 2018-11-27 | A kind of expandable casing patching time is slotting every tool of adopting and application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109386247A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410031A (en) * | 2019-06-14 | 2019-11-05 | 中国石油天然气股份有限公司 | It returns and is inserted every adopting THE REPRODUCTION TECHNOLOGY WITH tubing string and method at the top of a kind of casing damaged well expandable casing patching |
| WO2021026749A1 (en) * | 2019-08-12 | 2021-02-18 | 屈波 | Compound lining apparatus for pipeline |
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Application publication date: 20190226 |