CN101265793B - Y tube self-balance type down-hole switch - Google Patents
Y tube self-balance type down-hole switch Download PDFInfo
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- CN101265793B CN101265793B CN2008101049132A CN200810104913A CN101265793B CN 101265793 B CN101265793 B CN 101265793B CN 2008101049132 A CN2008101049132 A CN 2008101049132A CN 200810104913 A CN200810104913 A CN 200810104913A CN 101265793 B CN101265793 B CN 101265793B
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- top connection
- boss
- valve seat
- tube self
- hole
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Abstract
The invention discloses a Y tube self-balanced underground switch, which comprises an upper joint and a movable sleeve. A baffle is connected into the upper joint in a rotating way; a valve seat is arranged in the upper joint; the baffle is pressed on one end surface of the valve seat; the internal surface on the back end of the upper joint is provided with a groove; the front of a lower working barrel is connected into the upper joint on the back of the valve seat; the movable sleeve comprises a connecting sleeve and a guide head; a plurality of elastic claws are connected with the guide head; the external surfaces of the end part and the central part of each elastic claw are respectively provided with two bosses with different heights; the boss on the end part can be inserted into the concave groove on the lower part of the internal surface of the upper joint, both of which are combined with each other tightly. The Y tube self-balanced underground switch can perform inward and outward salvage, realize the press balance at the prophase of turning on, and realize the docking and sealing with the production tube column; the Y tube self-balanced underground switch realizes turn-on by force through the weight and the displacement of the production tube column and realizes automatic turn-off under the effect of the spring.
Description
Technical field
The present invention relates to the supporting technology that a kind of Y type flow string carries out the down-hole lost circulation prevention technology used in the oil well of oil producing operation, relate in particular to and a kind ofly under the particular job condition, not only can open but also closable Y tube self-balance type down-hole switch.
Background technology
Adopt Y type flow string to carry out the oil well of oil producing operation in order to solve because flushing fluid immerses the formation contaminant problem that cause on the stratum, reach and shorten the production capacity purpose of recovery time, simultaneously also for oil well test power tool string pass through or the injection of de-plugging operation de-plugging agent provides the passage that can open under specific circumstances, offshore oilfield generally adopts following anti-pollution process device at present: during the oil well completion operation, the seating nipple of an anti-pollution blanking plug is set above the well head packer; Before the well-flushing,, drop into an anti-pollution blanking plug, block unique passage that flushing fluid enters the stratum by steel wire operation; Well-flushing then; After well-flushing finishes, by steel wire operation, pull anti-pollution blanking plug out again.Can't miss in the stratum though this device can be guaranteed flushing fluid, there is certain risk in the process of pulling blanking plug, through regular meeting anti-pollution blanking plug takes place and meets the situation that card can't be salvaged, and need steel wire operation twice, and operating cost is higher.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide and salvage in a kind of can the carrying out or the outer pressure balance of salvaging, can realize opening early stage, can realize with the flow string Butt sealing, realize the enforced opening of down-hole switch, realize the Y tube self-balance type down-hole switch of closing automatically of down-hole switch by spring action by flow string weight and displacement.
Y tube self-balance type down-hole switch of the present invention, it comprises top connection, one is moved cover, its periphery has a plurality of gathering sills uniformly in the external surface upper edge of described top connection, on described top connection body, have pin hole, a toilet lid shape baffle plate is by being connected rotating being connected in the described top connection of linkage on the described pin hole, a valve seat is housed in described top connection, described baffle plate is pressed on the end face of described valve seat, the rear end inner surface of described top connection has groove, the front portion of a following seating nipple is connected the top connection that is positioned at described valve seat rear portion, have a plurality of through holes on the seating nipple body down described, described mobile cover comprises cover adapter sleeve and the guide head thereon that is connected with each other and be slidingly fitted with described down seating nipple, the a plurality of elastic claws that link to each other with described guide head, the external surface that the external surface of the end of described each elastic claw is provided with the middle part of end boss and described each elastic claw is provided with the middle part boss, described end boss is lower than the middle part boss, described end boss can be inserted in the cooperation that fastens with it in the groove of described top connection inner surface bottom, and the boss at middle part simultaneously is that right angle and the one side that links to each other with the end boss are the inclined-plane.
Compare with other technologies, the beneficial effects of the utility model are: Y pipe self-balancing down-hole switch is a kind of crucial kit of the down-hole lost circulation prevention technology that does not need steel wire operation newly, salvages or salvages outward in it can carry out, can realize opening pressure balance in earlier stage, can realize with the flow string Butt sealing, realizes enforced opening, leans on spring action to realize closing automatically by flow string weight and displacement.
Description of drawings
Fig. 1 is that the axis of no-feathering of Y tube self-balance type down-hole switch of the present invention is to sectional view;
Fig. 2 is the expanded view of the top connection of switch shown in Figure 1;
Fig. 3 is the structural representation of elastic claw shown in Figure 1;
Fig. 4 is the front view of baffle plate shown in Figure 1;
Fig. 5 is the left view of baffle plate shown in Figure 4;
Fig. 6 is that elastic claw begins to move down under the effect of Butt sealing tube, and baffle plate is in closed condition under spring action;
Fig. 7 is the A-A partial enlarged drawing at the elastic claw place of Fig. 6;
Fig. 8 is that the Butt sealing tube continues to move down, and flat being good for of inner orientation contacts with the baffle plate afterbody, and baffle plate begins to open;
Fig. 9 is the B-B partial enlarged drawing at Fig. 8 baffle plate place;
Figure 10 is the baffle plate complete opening, and elastic claw moves down into down the seating nipple lower end together with the Butt sealing tube simultaneously;
Figure 11 is the C-C partial enlarged drawing at Figure 10 baffle plate place;
Figure 12 is the D-D partial enlarged drawing at Figure 10 elastic claw place.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done to describe in detail.
Y tube self-balance type down-hole switch of the present invention shown in Fig. 1-4, it comprises top connection 1, one is moved cover, its periphery has a plurality of gathering sills uniformly in the external surface upper edge of described top connection, on described connector body, have pin hole, a toilet lid shape baffle plate 10 is by being connected rotating being connected in the described top connection 1 of linkage on the described pin hole, a valve seat 12 is housed in described top connection, described baffle plate 10 is pressed on the end face of described valve seat 12, the rear end inner surface of described top connection has groove 5, the front portion of a following seating nipple 9 is connected the top connection that is positioned at described valve seat 12 rear portions, have a plurality of through holes on the seating nipple body down described, described mobile cover comprises cover adapter sleeve 7 and the guide head 8 thereon that is connected with each other and be slidingly fitted with described down seating nipple, the a plurality of elastic claws 6 that link to each other with described guide head 8, the external surface that the external surface of the end of described each elastic claw is provided with the middle part of end boss 16 and described each elastic claw is provided with middle part boss 17, described end boss is lower than the middle part boss, the lower boss 16 in described end can be inserted in the cooperation that fastens with it in the groove 5 of described top connection inner surface bottom, the middle part are right angles than high boss 17 one sides, the one side that links to each other with the end boss is the inclined-plane.The boss of its end can rely on the tension force of self to be suspended in the groove of top connection 1 inner surface bottom, also can break away from the groove of top connection 1 inner surface bottom in the after-contraction that is squeezed; The boss at its middle part also can rely on the tension force of self to be suspended in the Baltimore groove of flow string bottom, also can be in the after-contraction that is squeezed, the Baltimore groove that breaks away from the flow string bottom, it is the right angle that the boss at middle part is designed to one side, one side is the shape on slope, this boss can only be compressed along the one side on slope, thus guarantee elastic claw 6 only with could break away from the Baltimore groove of flow string bottom after top connection 1 contacts, and can not break away from midway.
Described gathering sill is Y shape gathering sill 13, J-shaped groove 14 and the straight trough 15 that links to each other successively, and the degree of depth of described straight trough is shallower than the degree of depth of described J-shaped groove.Wherein Y shape gathering sill cooperates with the J-shaped groove, guides the pulling and running tool of giving up accurately to locate; Y shape gathering sill cooperates with straight trough, and the tail end of guiding flow string and baffle plate 10 is accurately located, and accurately docks with mobile cover; J-shaped groove and straight trough are set to different depth, and the running orbit of avoid giving up pulling and running tool and flow string is interfered mutually.Described linkage comprises the pivot pin 2 that is connected in the described pin hole and is with spring 3 thereon, banking pin 4 is equipped with at two ends at described pivot pin respectively, the profile at the position of the band pin shaft hole of described baffle plate is preferably semicircular arc, the cambered surface of described semi arch is close to the supporting surface in the top connection 1, both improved the force-bearing situation of axis pin of the spring 2, and can guarantee that again baffle plate 10 rotated flexibly around axis pin of the spring 2.It is loosening to prevent valve seat preferably to be connected with an anticreep pin 11 between the valve body of the body of described top connection and valve seat.
Use the operating process of Y pipe self-balancing down-hole switch of the present utility model to be:
Produce the butt joint tubing string and connect the Butt sealing tube of the inside tape guide flat key of a special use, single ball valve, ported sub, connection wye, electric pump and other oil well tubing string, G.I.H from the bottom to top successively;
The inside tape guide flat key of Butt sealing tube continues descending under the guiding of the Y shape gathering sill of top connection 1 external surface and straight trough;
As shown in Figure 5, the Butt sealing tube at first contacts with mobile cover, tubing string gravity forces the boss on the elastic claw 6 to shrink, move the groove that cover breaks away from top connection 1 inner surface bottom, edge seating nipple 9 down moves down, expose the through hole on seating nipple 9 body tops down, discharge the pressure of seating nipple 9 internal chamber, the pressure of baffle plate chamber about in the of 10 is tended to balance;
As Fig. 6, shown in Figure 7, the inside tape guide flat key of Butt sealing tube contacts with the tail end of baffle plate 10 after the pressure balance of baffle plate chamber about in the of 10, tubing string gravity presses down the afterbody of baffle plate 10, force baffle plate 10 around axis pin of the spring 2, upwardly open, and keep normally open.
(4) oil well ordinary production.
Because Y pipe self-balancing down-hole switch is in the enable possition, for oil well provides the injection channel that produces passage, test channel and acidizing treatment acid solution, can not influence production, test or the measure operation of oil well.
(5) well workover.
At first, drop into steel ball from well head to the down-hole, stop up valve seat, interim shutoff flushing fluid immerses unique passage on stratum;
Well-flushing then;
After well-flushing is finished, on carry and produce the butt joint tubing string.Boss on the elastic claw 6 is suspended on the flow string tail end by self tension force, makes to move cover along moving on the seating nipple 9 down, inserts the groove of top connection 1 inner surface bottom again until mobile cover, and the through hole on seating nipple 9 body tops is closed; Simultaneously, when mobile cover inserted the groove of top connection 1 inner surface bottom again, the tubing string pulling force forced the boss on the elastic claw 6 to shrink, and the boss on the elastic claw 6 breaks away from the flow string tail end; Move on flow string continues, after the tubing string gravity that acts on baffle plate 10 tail ends discharged, baffle plate 10 recovered closed condition under the active force of spring 3.
(6) salvage.
Be lowered to the special-purpose pulling and running tool of inner tape guide flat key.Dive key enters the cecum of J-shaped groove under the guiding of the Y shape gathering sill of top connection 1 external surface and J-shaped groove, drag for Y pipe self-balancing down-hole switch.
Although in conjunction with the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection of the present utility model.
Claims (5)
1.Y tube self-balance type down-hole switch, it is characterized in that: it comprises top connection, one is moved cover, its periphery has a plurality of gathering sills uniformly in the external surface upper edge of described top connection, on described top connection body, have pin hole, a toilet lid shape baffle plate is by being connected rotating being connected in the described top connection of linkage on the described pin hole, a valve seat is housed in described top connection, described baffle plate is pressed on the end face of described valve seat, the rear end inner surface of described top connection has groove, the front portion of a following seating nipple is connected the top connection that is positioned at described valve seat rear portion, have a plurality of through holes on the seating nipple body down described, described mobile cover comprises cover adapter sleeve and the guide head thereon that is connected with each other and be slidingly fitted with described down seating nipple, the a plurality of elastic claws that link to each other with described guide head, the external surface that the external surface of the end of described each elastic claw is provided with the middle part of end boss and described each elastic claw is provided with the middle part boss, described end boss is lower than the middle part boss, described end boss can be inserted in the cooperation that fastens with it in the groove of described top connection inner surface bottom, and the boss at middle part simultaneously is that right angle and the one side that links to each other with the end boss are the inclined-plane.
2. Y tube self-balance type down-hole switch according to claim 1 is characterized in that: Y shape gathering sill, J-shaped groove and the straight trough of described gathering sill for linking to each other successively, the degree of depth of described straight trough is shallower than the degree of depth of described J-shaped groove.
3. Y tube self-balance type down-hole switch according to claim 1 is characterized in that: the profile at the position of the band pin shaft hole of described baffle plate is a semicircular arc.
4. Y tube self-balance type down-hole switch according to claim 1 is characterized in that: described linkage comprises the pivot pin that is connected in the described pin hole and is with spring thereon, at the two ends of described pivot pin banking pin is housed respectively.
5. Y tube self-balance type down-hole switch according to claim 1 is characterized in that: be connected with an anticreep pin between the valve body of the body of described top connection and valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101049132A CN101265793B (en) | 2008-04-24 | 2008-04-24 | Y tube self-balance type down-hole switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101049132A CN101265793B (en) | 2008-04-24 | 2008-04-24 | Y tube self-balance type down-hole switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101265793A CN101265793A (en) | 2008-09-17 |
| CN101265793B true CN101265793B (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101049132A Expired - Fee Related CN101265793B (en) | 2008-04-24 | 2008-04-24 | Y tube self-balance type down-hole switch |
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| Country | Link |
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| CN (1) | CN101265793B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763366B (en) * | 2015-02-12 | 2017-04-05 | 中海油能源发展股份有限公司 | For the electric pump anti-falling device of wire Launching and Bailing electric pump operation |
| CN105134133A (en) * | 2015-09-18 | 2015-12-09 | 中国石油化工股份有限公司 | Steel wire dropping-fishing self-balance setting packer |
| CN108240198B (en) * | 2016-12-26 | 2024-03-26 | 中国石油天然气股份有限公司 | Pump-passing well-flushing device for oil pump |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040488A (en) * | 1976-09-27 | 1977-08-09 | The Dow Chemical Company | Differential valve |
| US4185690A (en) * | 1978-06-12 | 1980-01-29 | Baker International Corporation | Backsurge well cleaning tool |
| CN87215651U (en) * | 1987-11-14 | 1988-11-16 | 王兴林 | Well-killing prevention switch for oil-pumping well |
| CN2519016Y (en) * | 2001-09-28 | 2002-10-30 | 大庆隆格石油技术有限公司 | Snubbing service downhole switching device |
| CN2585971Y (en) * | 2002-12-16 | 2003-11-12 | 韩明胜 | Underground sliding bush switching device of well killing free operation |
| CN2616678Y (en) * | 2003-04-18 | 2004-05-19 | 阜新市石油工具厂 | Tubular column bottom valve for well-killing free oil-production process |
| GB2411187A (en) * | 2004-02-20 | 2005-08-24 | Weatherford Lamb | Methods and apparatus for protecting downhole deployment valves (DDV) from falling objects. |
| CN200985773Y (en) * | 2006-12-19 | 2007-12-05 | 中国海洋石油总公司 | Oil well intelligent anti-pollution device |
-
2008
- 2008-04-24 CN CN2008101049132A patent/CN101265793B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040488A (en) * | 1976-09-27 | 1977-08-09 | The Dow Chemical Company | Differential valve |
| US4185690A (en) * | 1978-06-12 | 1980-01-29 | Baker International Corporation | Backsurge well cleaning tool |
| CN87215651U (en) * | 1987-11-14 | 1988-11-16 | 王兴林 | Well-killing prevention switch for oil-pumping well |
| CN2519016Y (en) * | 2001-09-28 | 2002-10-30 | 大庆隆格石油技术有限公司 | Snubbing service downhole switching device |
| CN2585971Y (en) * | 2002-12-16 | 2003-11-12 | 韩明胜 | Underground sliding bush switching device of well killing free operation |
| CN2616678Y (en) * | 2003-04-18 | 2004-05-19 | 阜新市石油工具厂 | Tubular column bottom valve for well-killing free oil-production process |
| GB2411187A (en) * | 2004-02-20 | 2005-08-24 | Weatherford Lamb | Methods and apparatus for protecting downhole deployment valves (DDV) from falling objects. |
| CN200985773Y (en) * | 2006-12-19 | 2007-12-05 | 中国海洋石油总公司 | Oil well intelligent anti-pollution device |
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| Publication number | Publication date |
|---|---|
| CN101265793A (en) | 2008-09-17 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CNOOC Energy Development Co., Ltd. Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: CNOOC Energy Development Co., Ltd. Patentee before: China National Offshore Oil Corporation |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20210424 |
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| CF01 | Termination of patent right due to non-payment of annual fee |