CN103195391A - Slide sleeve switch closing tool - Google Patents
Slide sleeve switch closing tool Download PDFInfo
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- CN103195391A CN103195391A CN2013101404347A CN201310140434A CN103195391A CN 103195391 A CN103195391 A CN 103195391A CN 2013101404347 A CN2013101404347 A CN 2013101404347A CN 201310140434 A CN201310140434 A CN 201310140434A CN 103195391 A CN103195391 A CN 103195391A
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- elastic claw
- central tube
- annular
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- lower contact
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Abstract
The invention relates to a slide sleeve switch closing tool which comprises a central pipe. An upper connecting part and a lower connecting part are disposed on the central pipe. An upper connector and an elastic claw are sleeved on the central pipe. A first annular inner flange is disposed on the lower inner wall of the upper connector. An inner annular groove is arranged above the first annular inner flange. The lower portion of the elastic claw is annular. The middle portion and the upper portion of the elastic claw are provided with a plurality axial notches. An outer annular flange and a first outer annular groove are arranged on the upper portion of the elastic claw. A second outer annular groove is arranged in the middle of the elastic claw. The backs of two side walls of the elastic claw are conical. The upper portion of the elastic claw is provided with a lower annular end face perpendicular to an axis of the central pipe. A first lower connector is connected to the lower portion of the elastic jaw. An upper shaft shoulder and a lower shaft shoulder are disposed on the central pipe. The slide sleeve switch closing tool good in universality, wide in application range and applicable to slide sleeves of same specification and different structural forms, sand blocking and on-site operation risks can be avoided, operation reliability is improved greatly, and in-place action, timely closing and sand preventing of the slide sleeve switch closing tool are guaranteed.
Description
Technical field
The invention belongs to the oil field development production technical field, relate in particular to a kind of sliding sleeve switch closing tool.
Background technology
In present known oil field development, along with increasing of deep-well, complicated well drilling exploitation, especially the continuous innovation of well-completing process improves, and every function and the use of completion tool are had higher requirement.Sliding sleeve switch, closing tool are sand control service aids necessary in the gravel filling sand prevention operation, mainly play and close, open the sliding sleeve effect.There is following defective in tradition sliding sleeve switch closing tool: one, traditional sliding sleeve open and close instrument are to carry out supporting custom-designedly at a specific sliding sleeve, and its versatility is poor, and narrow application range can't satisfy the multiple form of structure sliding sleeve use of specification of the same race.Its two, its complex structural designs in the gravel pack operation, is easily piled up gravel at sliding sleeve open and close instrument place and is caused the sand card, brings great risk to field operation.Its three, the less reliable of the elastic claw mechanism of traditional sliding sleeve open and close instrument, and useful life is short, can't guarantee that in the gravel pack operation sliding sleeve open and close action of tool puts in place, there is the risk that can't close in sliding sleeve, causes sand control treatment to lose efficacy.
Summary of the invention
This patent provides a kind of sliding sleeve switch closing tool for solving the technical problem that exists in the known technology.
This sliding sleeve switch closing tool is in the gravel pack completion sand control treatment, and versatility is good, the scope of application is wide, can satisfy the multiple form of structure sliding sleeve of specification of the same race and use; Owing to this tool construction simplicity of design, can avoid piling up at sliding sleeve switch closing tool place in the gravel pack operation risk of gravel generation sand card phenomenon and field operation; It is annular that the elastic claw mechanism of this instrument adopts the bottom, middle part and top are provided with the structure design of many axial gap, not only can increase substantially its reliability in operation, increase the service life, but also can guarantee that the action of sliding sleeve switch closing tool puts in place, in time closes with sand control treatment effective.
The technical scheme that this patent is taked for the technical problem that exists in the solution known technology is:
A kind of sliding sleeve switch instrument comprises central tube, and described central tube is provided with connecting portion and following connecting portion, is with top connection and elastic claw on the central tube,
The lower inner wall of top connection is provided with the first annular inward flange, and the top of the first annular inward flange is provided with interior annular groove;
The bottom of elastic claw is annular, middle part and top are provided with many axial gap, the top of elastic claw is provided with respectively outer annular flanges and the first outer ring groove that cooperatively interacts with the first annular inward flange and interior annular groove, be provided with the second outer ring groove at the middle part of elastic claw, the two side of the second outer ring groove is the planar annular perpendicular to the central tube axis, the back side of two side is the conical surface, and the top of elastic claw has the following annular end face perpendicular to the central tube axis;
The bottom of elastic claw also is connected with first lower contact, and first lower contact has annular end face on, and lower contact also is sleeved on the central tube;
Described central tube is provided with the following shaft shoulder in order to annular end face in the last shaft shoulder that props up subordinate's annular end face on the elastic claw and first lower contact;
The zone at the position between the last shaft shoulder of central tube and the following shaft shoulder and elastic claw inwall middle part has formed and has held the space that elastic claw inwardly subsides.
This patent can also adopt following technical scheme:
Preferably, the distance of described upper surface of going up the shaft shoulder and following shaft shoulder lower surface is less than the distance of the last annular end face of the following annular end face on elastic claw top and lower contact, and described top connection, elastic claw, lower contact all are slidingly connected on the central tube.
Preferably, the described connecting portion of going up is the box cupling with last internal thread and following internal thread, and the following internal thread of box cupling is connected with central tube.
A kind of sliding sleeve closing tool comprises central tube, and described central tube is provided with connecting portion and following connecting portion, is with top connection and elastic claw on the central tube,
The lower inner wall of top connection is provided with the first annular inward flange, and the top of the first annular inward flange is provided with interior annular groove;
The bottom of elastic claw is annular, middle part and top are provided with many axial gap, the top of elastic claw is provided with respectively outer annular flanges and the first outer ring groove that cooperatively interacts with the first annular inward flange and interior annular groove, be provided with the second outer ring groove at the middle part of elastic claw, the upper side wall of the second outer ring groove is the planar annular perpendicular to the central tube axis, lower wall is the conical surface, and the back side of two side is the conical surface, and the top of elastic claw has the following annular end face perpendicular to the central tube axis;
The bottom of elastic claw also is connected with first lower contact, and first lower contact has annular end face on, and lower contact also is sleeved on the central tube;
Described central tube is provided with the following shaft shoulder in order to annular end face in the last shaft shoulder that props up subordinate's annular end face on the elastic claw and first lower contact;
The zone at the position between the last shaft shoulder of central tube and the following shaft shoulder and elastic claw inwall middle part has formed and has held the space that elastic claw inwardly subsides.
The present invention can also adopt following technical scheme:
Preferably, the distance of described upper surface of going up the shaft shoulder and following shaft shoulder lower surface is less than the distance of the last annular end face of the following annular end face on elastic claw top and lower contact, and described top connection, elastic claw, lower contact all are slidingly connected on the central tube.
Preferably, the described connecting portion of going up is the box cupling with last external screw thread and following internal thread, and the following internal thread of box cupling is connected with central tube.
Preferably, described connecting portion down is second lower contact with last internal thread and following internal thread, and the last internal thread of second lower contact is connected with central tube.
Advantage and good effect that the present invention has are: the present invention adopts technique scheme, namely in the gravel pack completion sand control treatment, adopt the sliding sleeve switch closing tool, its versatility is good, the scope of application is wide, can satisfy the multiple form of structure sliding sleeve of specification of the same race and use; Owing to this tool construction simplicity of design, can avoid piling up at sliding sleeve switch closing tool place in the gravel pack operation risk of gravel generation sand card phenomenon and field operation, easy and simple to handle and safe and reliable; It is annular that the elastic claw mechanism of this instrument adopts the bottom, middle part and top are provided with the structure design of many axial gap, not only can increase substantially its reliability in operation, increase the service life, but also can guarantee that the action of sliding sleeve switch closing tool puts in place, in time closes with sand control treatment effective.
Description of drawings
Fig. 1 is the half sectional view of this patent embodiment 1, and the left side among the figure is defined as the top of instrument;
Fig. 2 is the half sectional view of this patent embodiment 2, and the left side among the figure is defined as the top of instrument.
Among the figure: 1, box cupling; 2, central tube; 3, top connection; 4, elastic claw; 4-1, axial gap; 5, holding screw; 6, first lower contact; 7, second lower contact.
The specific embodiment
For further understanding summary of the invention, characteristics and the effect of this patent, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Embodiment 1:
See also Fig. 1, a kind of sliding sleeve switch instrument comprises central tube 2, and central tube is provided with connecting portion and following connecting portion, is with top connection 3 and elastic claw 4 on the central tube,
The lower inner wall of top connection is provided with the first annular inward flange, and the top of the first annular inward flange is provided with interior annular groove;
The bottom of elastic claw is annular, middle part and top are provided with many axial gap, the top of elastic claw is provided with respectively outer annular flanges and the first outer ring groove that cooperatively interacts with the first annular inward flange and interior annular groove, be provided with the second outer ring groove at the middle part of elastic claw, the two side of the second outer ring groove is the planar annular perpendicular to the central tube axis, the back side of two side is the conical surface, and the top of elastic claw has the following annular end face perpendicular to the central tube axis;
First lower contact that also has been threaded of the bottom of elastic claw, and after first lower contact 6 was rotated in place, fixing by holding screw 5, first lower contact had annular end face on, and lower contact also is sleeved on the central tube;
Central tube is provided with the following shaft shoulder in order to annular end face in the last shaft shoulder that props up subordinate's annular end face on the elastic claw and first lower contact;
The zone at the position between the last shaft shoulder of central tube and the following shaft shoulder and elastic claw inwall middle part has formed and has held the space that elastic claw inwardly subsides.
The distance of the upper surface of the last shaft shoulder and following shaft shoulder lower surface is less than the distance of the last annular end face of the following annular end face on elastic claw top and lower contact, and top connection, elastic claw, lower contact all are slidingly connected on the central tube.
Last connecting portion in the present embodiment is the box cupling 1 with last internal thread and following internal thread, and the following internal thread of box cupling is connected with central tube.The external screw thread of pipe bottom centered by the following connecting portion.
The operating principle of present embodiment is:
In this set of tools process of assembling, earlier the top of elastic claw is inserted in the top connection, because top and the middle part of elastic claw have axial slits, so top can inwardly be shunk and be inserted in the top connection, the first outer ring groove and interior annular groove, the first annular inward flange and outer annular flanges cooperatively interact, and then the assembly of top connection and elastic claw are enclosed within on the central tube from the top, then install box cupling, and in first lower contact screw-in elastic claw, fix by holding screw.
During use, when the sliding sleeve switch instrument passes through sliding sleeve, because the sidewall outside of the elastic claw middle part second outer ring groove is conical, and there is the space that can compress in the inner wall space at elastic claw middle part, so through out-of-date, sliding sleeve slips over from the conical surface in the sidewall outside, and is snapped in the second outer ring groove.By moving up and down central tube, just can realize the ON/OFF of sliding sleeve.
Embodiment 2:
See also Fig. 2, a kind of sliding sleeve closing tool comprises central tube 1, and described central tube is provided with connecting portion and following connecting portion, is with top connection 3 and elastic claw 4 on the central tube,
The lower inner wall of top connection is provided with the first annular inward flange, and the top of the first annular inward flange is provided with interior annular groove;
The bottom of elastic claw 4 is annular, middle part and top are provided with many axial gap, the top of elastic claw is provided with respectively outer annular flanges and the first outer ring groove that cooperatively interacts with the first annular inward flange and interior annular groove, be provided with the second outer ring groove at the middle part of elastic claw, the upper side wall of the second outer ring groove is the planar annular perpendicular to the central tube axis, lower wall is the conical surface, and the back side of two side is the conical surface, and the top of elastic claw has the following annular end face perpendicular to the central tube axis;
The bottom of elastic claw also is connected with first lower contact, 6, the first lower contacts and has annular end face on, and lower contact also is sleeved on the central tube;
Described central tube is provided with the following shaft shoulder in order to annular end face in the last shaft shoulder that props up subordinate's annular end face on the elastic claw and first lower contact;
The zone at the position between the last shaft shoulder of central tube and the following shaft shoulder and elastic claw inwall middle part has formed and has held the space that elastic claw inwardly subsides.
Preferably, the distance of described upper surface of going up the shaft shoulder and following shaft shoulder lower surface is less than the distance of the last annular end face of the following annular end face on elastic claw top and lower contact, and described top connection, elastic claw, lower contact all are slidingly connected on the central tube.
Preferably, the described connecting portion of going up is the box cupling 1 with last external screw thread and following internal thread, and the following internal thread of box cupling is connected with central tube.
Preferably, described connecting portion down is that the last internal thread with second lower contact, 7, the second lower contacts of last internal thread and following internal thread is connected with central tube.
The structure of this sliding sleeve closing tool and sliding sleeve switch instrument are roughly the same, and difference only is that the upper side wall of the second outer ring groove is the planar annular perpendicular to the central tube axis, and lower wall is the conical surface, and the back side of two side also is the conical surface.
Last connecting portion in the present embodiment is the box cupling 1 with last external screw thread and following internal thread, and the following internal thread of box cupling is connected with central tube.Following connecting portion is that the last internal thread with second lower contact, 7, the second lower contacts of last internal thread and following internal thread is connected with central tube.
The operating principle of present embodiment is most of identical with embodiment 1, only because the lower wall of the second outer ring groove is the conical surface, so closing tool only can impose downward power to sliding sleeve, only has closing function.
Although by reference to the accompanying drawings the preferred embodiment of this patent is described above; but this patent is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under the enlightenment of this patent; do not breaking away under the scope situation that this patent aim and claim protect; can also make a lot of forms; for example: can be internal thread or external screw thread according to the screw thread of correlated parts 1.; and thread size size; be equipped with multi-form box cupling and second lower contact to central tube; or directly utilize external screw thread on the central tube as last connecting portion and following connecting portion; 2. can select for use other fixed form that first lower contact and elastic claw are fixed together; and being not limited to employing holding screw radially, these all belong within the protection domain of this patent.
Claims (7)
1. a sliding sleeve switch instrument comprises central tube, and described central tube is provided with connecting portion and following connecting portion, it is characterized in that: be with top connection and elastic claw on the central tube,
The lower inner wall of top connection is provided with the first annular inward flange, and the top of the first annular inward flange is provided with interior annular groove;
The bottom of elastic claw is annular, middle part and top are provided with many axial gap, the top of elastic claw is provided with respectively outer annular flanges and the first outer ring groove that cooperatively interacts with the first annular inward flange and interior annular groove, be provided with the second outer ring groove at the middle part of elastic claw, the two side of the second outer ring groove is the planar annular perpendicular to the central tube axis, the back side of two side is the conical surface, and the top of elastic claw has the following annular end face perpendicular to the central tube axis;
The bottom of elastic claw also is connected with first lower contact, and first lower contact has annular end face on, and lower contact also is sleeved on the central tube;
Described central tube is provided with the following shaft shoulder in order to annular end face in the last shaft shoulder that props up subordinate's annular end face on the elastic claw and first lower contact;
The zone at the position between the last shaft shoulder of central tube and the following shaft shoulder and elastic claw inwall middle part has formed and has held the space that elastic claw inwardly subsides.
2. sliding sleeve switch instrument according to claim 1, it is characterized in that: the distance of described upper surface of going up the shaft shoulder and following shaft shoulder lower surface is less than the distance of the last annular end face of the following annular end face on elastic claw top and lower contact, and described top connection, elastic claw, lower contact all are slidingly connected on the central tube.
3. sliding sleeve switch instrument according to claim 1 is characterized in that: the described connecting portion of going up is the box cupling with last internal thread and following internal thread, and the following internal thread of box cupling is connected with central tube.
4. a sliding sleeve closing tool comprises central tube, and described central tube is provided with connecting portion and following connecting portion, it is characterized in that: be with top connection and elastic claw on the central tube,
The lower inner wall of top connection is provided with the first annular inward flange, and the top of the first annular inward flange is provided with interior annular groove;
The bottom of elastic claw is annular, middle part and top are provided with many axial gap, the top of elastic claw is provided with respectively outer annular flanges and the first outer ring groove that cooperatively interacts with the first annular inward flange and interior annular groove, be provided with the second outer ring groove at the middle part of elastic claw, the upper side wall of the second outer ring groove is the planar annular perpendicular to the central tube axis, lower wall is the conical surface, and the back side of two side is the conical surface, and the top of elastic claw has the following annular end face perpendicular to the central tube axis;
The bottom of elastic claw also is connected with first lower contact, and first lower contact has annular end face on, and lower contact also is sleeved on the central tube;
Described central tube is provided with the following shaft shoulder in order to annular end face in the last shaft shoulder that props up subordinate's annular end face on the elastic claw and first lower contact;
The zone at the position between the last shaft shoulder of central tube and the following shaft shoulder and elastic claw inwall middle part has formed and has held the space that elastic claw inwardly subsides.
5. sliding sleeve closing tool according to claim 4, it is characterized in that: the distance of described upper surface of going up the shaft shoulder and following shaft shoulder lower surface is less than the distance of the last annular end face of the following annular end face on elastic claw top and lower contact, and described top connection, elastic claw, lower contact all are slidingly connected on the central tube.
6. sliding sleeve closing tool according to claim 4 is characterized in that: the described connecting portion of going up is the box cupling with last external screw thread and following internal thread, and the following internal thread of box cupling is connected with central tube.
7. sliding sleeve closing tool according to claim 4 is characterized in that: described connecting portion down is second lower contact with last internal thread and following internal thread, and the last internal thread of second lower contact is connected with central tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310140434.7A CN103195391B (en) | 2013-04-22 | 2013-04-22 | Sliding sleeve switch closing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310140434.7A CN103195391B (en) | 2013-04-22 | 2013-04-22 | Sliding sleeve switch closing tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103195391A true CN103195391A (en) | 2013-07-10 |
| CN103195391B CN103195391B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310140434.7A Expired - Fee Related CN103195391B (en) | 2013-04-22 | 2013-04-22 | Sliding sleeve switch closing tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN103195391B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632113A (en) * | 2013-11-15 | 2015-05-20 | 中国石油天然气股份有限公司 | Infinite-order fracturing sand blasting sliding sleeve opening tool and operation method thereof |
| CN106285643A (en) * | 2015-06-01 | 2017-01-04 | 中国石油天然气股份有限公司 | Casing collar locator (CCL) and casing coupling localization method |
| CN107420067A (en) * | 2017-06-29 | 2017-12-01 | 中国海洋石油总公司 | A kind of anti-return well cementation sliding sleeve |
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| CN202731847U (en) * | 2012-07-04 | 2013-02-13 | 中国海洋石油总公司 | Circulatory produced sliding sleeve |
| CN202810789U (en) * | 2012-08-31 | 2013-03-20 | 中国石油化工股份有限公司 | Underground device for sliding sleeve switch |
| CN203214022U (en) * | 2013-04-22 | 2013-09-25 | 中国海洋石油总公司 | Sliding sleeve opening and closing tool |
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2013
- 2013-04-22 CN CN201310140434.7A patent/CN103195391B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201334895Y (en) * | 2009-01-06 | 2009-10-28 | 四机赛瓦石油钻采设备有限公司 | Communicating sliding sleeve |
| US20120103594A1 (en) * | 2010-10-29 | 2012-05-03 | Hall David R | System for a Downhole String with a Downhole Valve |
| CN102261231A (en) * | 2011-02-23 | 2011-11-30 | 新疆华油油气工程有限公司 | Repeated switch sliding sleeve device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632113A (en) * | 2013-11-15 | 2015-05-20 | 中国石油天然气股份有限公司 | Infinite-order fracturing sand blasting sliding sleeve opening tool and operation method thereof |
| CN104632113B (en) * | 2013-11-15 | 2017-08-04 | 中国石油天然气股份有限公司 | A kind of infinite stages pressure break sand blast sliding sleeve opener and its operating method |
| CN106285643A (en) * | 2015-06-01 | 2017-01-04 | 中国石油天然气股份有限公司 | Casing collar locator (CCL) and casing coupling localization method |
| CN106285643B (en) * | 2015-06-01 | 2019-06-11 | 中国石油天然气股份有限公司 | Casing collar locator (CCL) and casing coupling localization method |
| CN107420067A (en) * | 2017-06-29 | 2017-12-01 | 中国海洋石油总公司 | A kind of anti-return well cementation sliding sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103195391B (en) | 2015-10-21 |
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Granted publication date: 20151021 |