CN106703751A - Thick oil production well immovable string downhole switch and switching on and switching off method - Google Patents
Thick oil production well immovable string downhole switch and switching on and switching off method Download PDFInfo
- Publication number
- CN106703751A CN106703751A CN201510420766.XA CN201510420766A CN106703751A CN 106703751 A CN106703751 A CN 106703751A CN 201510420766 A CN201510420766 A CN 201510420766A CN 106703751 A CN106703751 A CN 106703751A
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- outer tube
- switch
- piston
- spring
- tapping pin
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Abstract
The invention discloses a thick oil production well immovable string downhole switch and a switching on and switching off method. The switch comprises a ball valve switch, an outer tube and a poking rod piston; the ball valve switch is connected to the center of the lower end of a packer; the outer pipe is radially provided with a pressure opening, and an inner center hole of the outer tube located above the pressure opening is subjected to diameter expansion to form a ring table; the poking rod piston is coaxially inserted into the inner center hole of the outer tube and can conduct axial range moving in the center hole, the poking rod piston axle center is provided with a penetrating runner, the lower end of the poking rod piston stretches into the packer, the peripheral wall is provided with a radial oil inlet hole, the upper end of the poking rod piston is provided with a ring table shoulder which is arranged on the ring table of the outer tube in a cooperating mode, and the lower end face directly abuts against a switch contact of the upper end of the ball valve switch on the lower portion in an intermittent mode; a pressure transmission channel is arranged between the pressure opening and the ring table shoulder. Accordingly, switching on and switching off of the switch are completed on the condition that normal production of tube pile production is not affected, tube pile switching on and off are not needed, the labor force is saved, and the production cost is reduced.
Description
Technical field
The present invention relates to viscous crude producing well down-hole switch opening technology；Open specifically viscous crude producing well fixed tubular column underground
Close and its method for opening and closing.
Background technology
At present, heavy crude reservoir is generally exploited by the way of steam injection, to realize that turning after the completion of steam injection takes out operation,
Due to the presence of high temperature and high pressure gas in well, tubing string is cooled down using the method for circulation well cleanup generally, it is this to do
Method often produces cold damage to stratum, reduces reservoir exploitation efficiency.In order to avoid it is above-mentioned the occurrence of, generally in well
Enter switching device under interior.But there is switch open needs lower tubular column to realize with closing, increase operation labor intensity and
Operating cost.
By retrieval, learn that the technical scheme that the present invention is provided for solution above-mentioned technical problem was not disclosed.
The content of the invention
It is an object of the invention to provide viscous crude producing well fixed tubular column down-hole switch and its method for opening and closing, production is not being influenceed
Tubing string completes switch open and closes in the case of normally producing, and without lower unlatching tubing string and closing tubing string, saves labour,
Production cost is saved.
In order to reach above-mentioned purpose, present invention employs following technical scheme, viscous crude producing well fixed tubular column down-hole switch,
Including：
One packer, suspension packing is in oil well casing inwall；
One ball valve switch, is connected to packer lower end center；
One outer tube, outer tube is radially opened up and suppresses mouth, wherein being carried out positioned at the interior centre bore for suppressing outer tube described in mouthful top position
Expanding formation annulus platform；
One tapping pin piston, centre bore and Cheng Yidong can be axially limited in coaxial-type insertion outer tube in centre bore, the tapping pin work
Plug axle center opens up the runner of insertion, and the tapping pin piston stretches into packer inside and perisporium opens up the fuel feed hole of radial direction,
The tapping pin piston upper end be also provided with annulus shoulder coordinate on the annulus platform of outer tube, lower surface then directly with the ball valve of lower section
The switch contact batch (-type) for switching upper end is abutted；It is described to suppress mouth to setting pressure transmission passage between annulus shoulder.
Outer tube upper end inner chamber and spring inner sleeve is arranged above positioned at tapping pin piston, is set with set in spring
Spring, cushion rubber and slotted collar are respectively provided between the upper end outer wall and outer tube wall of the tapping pin piston from top to bottom, are opened
Mouth snap ring treats tapping pin piston stroking upward, and the unexpected release opening snap ring of annulus shoulder, slotted collar is blocked at annulus shoulder, limitation
Tapping pin descent of piston.
The tapping pin piston upper end inner chamber is expanded through consistent with spring inner sleeve external diameter, when being easy to pressing spring under spring inner sleeve, spring
Outer wall of inside race expands through the uniformity downslide of inwall axial direction along tapping pin piston upper end.
The packer upper end is connected by packer adapter and inserts sealing joint device, and the lower end of the outer tube also connects slotting sealing-in
Head device.
The slotting sealing joint device is squatted in packer top connection, and glue is provided between its slotting sealing joint device upper end and outer tube
Circle, is provided with graphite annulus between lower end and packer adapter.
In order to reach above-mentioned another object, present invention employs following technical scheme, viscous crude producing well fixed tubular column underground is opened
The method for opening and closing of pass, it is characterised in that open method is：Extruding force operation when outer tube upper end is connected with completion tubular column exists
Spring inner sleeve, then compression spring, makes piston pike pole descending, and piston pike pole pushes ball valve switch and opens ball valve switch,
Fluid enters air stream enter runner by fuel feed hole, and ground is drawn into by pumping pipe string；
Method for closing is：Suppressed from sleeve pipe, pressure is transmitted from mouth is suppressed, produced at the variable cross-section of pike pole piston and pushed away
Power, tapping pin piston is lifted up, and unclamps the contact with ball valve switch, and ball valve switch is closed, and now tapping pin piston is squeezed upwards
Pressing spring, spring retraction, slotted collar is opened, and piston pike pole is fixed, it is ensured that switch is constantly in opening.
Compared to prior art, the invention has the advantages that：
A part of the tubing string as completion tubular column is opened, switch is opened by producing down thrust during lower tubular column, beaten from sleeve pipe
Switch closing, this kind of switch open and method for closing are completed to open by pressure in the case where not influenceing flow string normally to produce
Open and close is closed, without lower unlatching tubing string and closing tubing string, labour is saved, production cost has been saved.
Brief description of the drawings
Fig. 1 is the structural representation of viscous crude producing well fixed tubular column down-hole switch of the invention.
In figure：Outer tube 1, spring 2, spring inner sleeve 3, cushion rubber 4, slotted collar 5, suppress mouth 6, pike pole piston 7,
Cushion rubber 8, slotting sealing joint device 9, graphite annulus 10, packer top connection 11, fuel feed hole 12, packer 13, ball valve are opened
Close 14, runner 15, annulus shoulder 16.
Specific embodiment
Detailed description for the present invention and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing only provides and refers to and say
It is bright to be used, not for being any limitation as to the present invention.
According to Fig. 1, viscous crude producing well fixed tubular column down-hole switch, including：One packer 13, suspension packing is in oil well set
Inside pipe wall；One ball valve switch 14, is connected to packer lower end center；One outer tube 1, outer tube is radially opened up and suppresses mouth 6, its
In be located at suppress outer tube described in mouthful top position interior centre bore carry out it is expanding formation annulus platform；One tapping pin piston 7, coaxial-type
Centre bore and Cheng Yidong can be axially limited in centre bore in insertion outer tube, the tapping pin piston axes open up the runner 15 of insertion,
The tapping pin piston stretches into packer inside and perisporium opens up the fuel feed hole 12 of radial direction, and the tapping pin piston upper end also sets
Annulus shoulder 16 is put to coordinate on the annulus platform of outer tube, lower surface then directly with the switch of the upper end of ball valve switch 14 of lower section
Contact batch (-type) is abutted；It is described to suppress mouth to setting pressure transmission passage between annulus shoulder.
Outer tube upper end inner chamber and spring inner sleeve 3 is arranged above positioned at tapping pin piston, is set with set in spring
There is spring 2, cushion rubber 4 and slotted collar are respectively provided with from top to bottom between the upper end outer wall and outer tube wall of the tapping pin piston
5, slotted collar treats tapping pin piston stroking upward, and the unexpected release opening snap ring of annulus shoulder, slotted collar is blocked at annulus shoulder,
Limitation tapping pin descent of piston.The tapping pin piston upper end inner chamber is expanded through consistent with spring inner sleeve external diameter, is easy under spring inner sleeve
During pressing spring, spring outer wall of inside race expands through the uniformity downslide of inwall axial direction along tapping pin piston upper end.On the packer 13
End is connected by packer adapter 11 and inserts sealing joint device 9, and the lower end of the outer tube also connects slotting sealing joint device.It is described
Insert sealing joint device to squat in packer top connection, cushion rubber 8, lower end are installed between its slotting sealing joint device upper end and outer tube
Graphite annulus 10 is installed between packer adapter.
1st, outer tube 1 is connected on the lower end of completion tubular column, have on outer tube it is step-like suppress mouth 6, outer tube lower end fills with slotting sealing joint
9 are put to be connected through a screw thread；
2nd, spring 2 is sleeved on above spring inner sleeve 3, and the inner upper end of outer tube 1 is then mounted in the lump；
3rd, piston pike pole 7 be located at outer tube spring 2 lower end, from top to bottom successively its run through in slotting sealing joint device 9,
Packer top connection 11, packer 13；Its upper end is sequentially arranged with cushion rubber 4 and slotted collar 5；Lower end is machined with fuel feed hole
12, the bottom of piston pike pole 7 can contact with ball valve switch 14；
4th, insert sealing joint device 9 to squat in packer top connection 11, its upper end is provided with cushion rubber 8, and lower end is provided with stone
Black ring 10；
5th, under viscous crude producing well during flow string, supporting structure component outer tube, spring, spring inner sleeve, cushion rubber, opening
Snap ring, suppress mouth, piston pike pole, cushion rubber, insert sealing joint device, graphite annulus.It is completed according to step 1-4 successively
Afterwards, it is lower to design attitude in the lump with flow string.
Need during by switch open, open method is：Extruding force operation when outer tube upper end is connected with completion tubular column is in spring
Inner sleeve, then compression spring, makes piston pike pole descending, and piston pike pole pushes ball valve switch and opens ball valve switch, fluid
Air stream enter runner is entered by fuel feed hole, ground is drawn into by pumping pipe string.
, it is necessary to switch is closed when producing well carries out operation, its method for closing is：Suppressed from sleeve pipe, pressure is from suppressing mouth
Transmitted, thrust is produced at the variable cross-section of pike pole piston, tapping pin piston is lifted up, release is connect with ball valve switch
Touch, ball valve switch is closed, now tapping pin piston upwardly spring, spring retraction, slotted collar is opened, piston pike pole
Fixed, it is ensured that switch is constantly in opening.
Presently preferred embodiments of the present invention is the foregoing is only, is not used to limit the scope of the claims of the invention, other are with this hair
The equivalence changes of bright patent spirit, all should all belong to the scope of the claims of the invention.
Claims (6)
1. viscous crude producing well fixed tubular column down-hole switch, it is characterised in that including
One packer, suspension packing is in oil well casing inwall；
One ball valve switch, is connected to packer lower end center；
One outer tube, outer tube is radially opened up and suppresses mouth, wherein carrying out expanding formation annulus platform positioned at the interior centre bore for suppressing outer tube described in mouthful top position；
One tapping pin piston, centre bore and Cheng Yidong can be axially limited in centre bore in coaxial-type insertion outer tube, the tapping pin piston axes open up the runner of insertion, the tapping pin piston stretches into packer inside and perisporium opens up the fuel feed hole of radial direction, the tapping pin piston upper end is also provided with annulus shoulder and coordinates on the annulus platform of outer tube, and switch contact batch (-type) of the lower surface then directly with the ball valve switch upper end of lower section is abutted；It is described to suppress mouth to setting pressure transmission passage between annulus shoulder.
2. viscous crude producing well fixed tubular column down-hole switch according to claim 1, it is characterized in that, outer tube upper end inner chamber and it is arranged above spring inner sleeve positioned at tapping pin piston, spring is set with set in spring, cushion rubber and slotted collar are respectively provided between the upper end outer wall and outer tube wall of the tapping pin piston from top to bottom, slotted collar treats tapping pin piston stroking upward, the unexpected release opening snap ring of annulus shoulder, slotted collar is blocked at annulus shoulder, limits tapping pin descent of piston.
3. viscous crude producing well fixed tubular column down-hole switch according to claim 2, it is characterized in that, the tapping pin piston upper end inner chamber is expanded through consistent with spring inner sleeve external diameter, and when being easy to pressing spring under spring inner sleeve, spring outer wall of inside race expands through the uniformity downslide of inwall axial direction along tapping pin piston upper end.
4. viscous crude producing well fixed tubular column down-hole switch according to claim 1, it is characterised in that the packer upper end is connected by packer adapter and inserts sealing joint device, and the lower end of the outer tube also connects slotting sealing joint device.
5. viscous crude producing well fixed tubular column down-hole switch according to claim 4, it is characterized in that, the slotting sealing joint device is squatted in packer top connection, and cushion rubber is provided between its slotting sealing joint device upper end and outer tube, and graphite annulus is provided between lower end and packer adapter.
6. the method for opening and closing of viscous crude producing well fixed tubular column down-hole switch, it is characterised in that open method is：In spring inner sleeve, then compression spring, makes piston pike pole descending, and piston pike pole pushes ball valve switch and opens ball valve switch, and fluid enters air stream enter runner by fuel feed hole, and ground is drawn into by pumping pipe string for extruding force operation when outer tube upper end is connected with completion tubular column；
Method for closing is：Suppressed from sleeve pipe, pressure is transmitted from mouth is suppressed, thrust is produced at the variable cross-section of pike pole piston, tapping pin piston is lifted up, unclamp the contact with ball valve switch, ball valve switch is closed, now tapping pin piston upwardly spring, spring retraction, slotted collar is opened, piston pike pole is fixed, it is ensured that switch is constantly in opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510420766.XA CN106703751A (en) | 2015-07-17 | 2015-07-17 | Thick oil production well immovable string downhole switch and switching on and switching off method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510420766.XA CN106703751A (en) | 2015-07-17 | 2015-07-17 | Thick oil production well immovable string downhole switch and switching on and switching off method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106703751A true CN106703751A (en) | 2017-05-24 |
Family
ID=58895018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510420766.XA Pending CN106703751A (en) | 2015-07-17 | 2015-07-17 | Thick oil production well immovable string downhole switch and switching on and switching off method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106703751A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643872A (en) * | 2018-07-05 | 2018-10-12 | 江苏航天鸿鹏数控机械有限公司 | A kind of heavy oil wells pumping wax-proofing apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4429744A (en) * | 1981-05-08 | 1984-02-07 | Mobil Oil Corporation | Oil recovery method |
| CN201358728Y (en) * | 2009-02-23 | 2009-12-09 | 大庆油田有限责任公司 | Multifunctional anti-pollution pipe column |
| CN103806886A (en) * | 2012-11-06 | 2014-05-21 | 中国石油化工股份有限公司 | Underground steam sealing and controlling device and method of heavy oil thermal recovery well |
| CN104481460A (en) * | 2014-11-18 | 2015-04-01 | 梁伟成 | Large pump oil pumping system |
-
2015
- 2015-07-17 CN CN201510420766.XA patent/CN106703751A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4429744A (en) * | 1981-05-08 | 1984-02-07 | Mobil Oil Corporation | Oil recovery method |
| CN201358728Y (en) * | 2009-02-23 | 2009-12-09 | 大庆油田有限责任公司 | Multifunctional anti-pollution pipe column |
| CN103806886A (en) * | 2012-11-06 | 2014-05-21 | 中国石油化工股份有限公司 | Underground steam sealing and controlling device and method of heavy oil thermal recovery well |
| CN104481460A (en) * | 2014-11-18 | 2015-04-01 | 梁伟成 | Large pump oil pumping system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643872A (en) * | 2018-07-05 | 2018-10-12 | 江苏航天鸿鹏数控机械有限公司 | A kind of heavy oil wells pumping wax-proofing apparatus |
| CN108643872B (en) * | 2018-07-05 | 2024-02-20 | 江苏航天鸿鹏数控机械有限公司 | Viscous crude well swabbing wax control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |