CN203145888U - Removable inserting tube oil-extraction bridge plug and special-purpose inserting tube - Google Patents
Removable inserting tube oil-extraction bridge plug and special-purpose inserting tube Download PDFInfo
- Publication number
- CN203145888U CN203145888U CN 201220605306 CN201220605306U CN203145888U CN 203145888 U CN203145888 U CN 203145888U CN 201220605306 CN201220605306 CN 201220605306 CN 201220605306 U CN201220605306 U CN 201220605306U CN 203145888 U CN203145888 U CN 203145888U
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- Prior art keywords
- slips
- mandrel
- tube
- intubate
- lock
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- Expired - Lifetime
Links
- 238000000605 extraction Methods 0.000 title abstract 5
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 238000011084 recovery Methods 0.000 claims abstract description 16
- 238000012856 packing Methods 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 239000004576 sand Substances 0.000 abstract description 4
- 238000004873 anchoring Methods 0.000 abstract description 3
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a downhole oil extraction tool used in oil field engineering, and especially relates to a removable inserting tube oil-extraction bridge plug by which inserting tube oil extraction can be carried out, and a special-purpose inserting tube. The bridge plug is composed of a setting mechanism, an anchoring mechanism, a sealing mechanism, an unpacking mechanism and the special-purpose inserting tube. According to the bridge plug provided by the utility model, an anchoring-sealing interlocking mode is adopted, a windowing side-pushing type single slip bidirectional anchoring mode is also adopted, total anchor of pipes is realized, loading capacity is raised, the problems of difficulties in sand setting and conventional slip recoveries are solved, and releasing and unpacking are reliable. Meanwhile when an oil pipe goes wrong during oil extraction, only the upper part of the oil pipe is needed to be pulled out for replacement, and no complicate operations are needed.
Description
Technical field
The utility model relates to a kind of oilfield engineering down-hole oil production instrument, but especially relates to retrievable intubate oil recovery bridging plug and special-purpose intubate thereof that a kind of intubate is recovered the oil.
Background technology
The oil field is in oil recovery process, especially OW carries out secondary, tertiary oil recovery, often need in different oil reservoirs, carry out water blockoff, adjust annotate and to adopt layer position, stride layer and recover the oil, at present, main use is packers such as Y221, Y211, Y341, Y441 in the operation, when using these instruments, problems such as withstand voltage poor scarce capacity, tubing string wriggling appear often.In addition, the perforation of oil pipe in oil recovery process, disconnectedly take off, problem such as seepage, cause period of validity short, cause frequent operation.
Summary of the invention
Retrievable intubate oil recovery bridging plug and special-purpose intubate thereof that the utility model provides, to overcome the deficiency of above-mentioned technology, anchor mechanism has adopted the side-push monomer slips bidirectionally anchoring mode of windowing, and can carry out complete grappling to tubing string, improves withstand voltage poor ability; Sealing mechanism is made up of a plurality of seals and a plurality of spacer ring, and sealing performance is improved; Oil pipe goes wrong in the intubate oil recovery process simultaneously, only need trip out top oil pipe replacing insertion and get final product, and need not carry out complex job.
The technical scheme that its technical problem that solves the utility model adopts is: retrievable intubate oil recovery bridging plug, setting fitting sleeve is separating on the sealing joint, being threaded on setting pin and setting the joint periphery, setting the pin lower step inserts in the periphery groove of separating sealing joint, setting joint is threaded with cone, spacing ring is enclosed within on the periphery of cone, be threaded with the slips tube, cone, the slips jacket casing is on mandrel, slips and cone are slidingly connected by dovetail groove, and be positioned at the slip groove of slips tube, lock ring is positioned at and sets joint, and with set the joint saw-tooth thread and be connected, lock tube is enclosed within on the mandrel, lock dog is positioned at the lock dog groove of mandrel, lock dog by lock tube has limited moving axially of lock tube and mandrel, the deblocking fitting sleeve is at connector, mandrel, lock tube, on the periphery of lock dog, limited the radial motion of lock dog, the deblocking pin with separate the sealing joint periphery on be threaded, deblocking pin lower step is inserted in the outside groove of mandrel, connector is connected with the mandrel internal thread, sealing shroud is connected with the mandrel external screw thread, packing element, spacer ring, the slips jacket casing is on sealing shroud, connector top has internal thread to be connected with the bridging plug setting tool, separating sealing joint top has external screw thread and inner via hole to be convenient to the salvaging of fishing tool deblocking, the lock tube periphery is provided with saw-tooth thread, be meshed with saw-tooth thread in the lock ring when bridging plug sets, mandrel is provided with cannelure, sets the disconnected cannelure of post-tensioning and realizes giving up in bridging plug.
Anchor mechanism comprises lock ring, lock tube, lock dog, mandrel, cone, slips tube and slips, the slips tube adopts the side mode of windowing, and slips stretches out or reclaims from slips side window that tube is opened, and slip insert is made up of the tooth of two groups of different directions, first half tooth is pawl, and the Lower Half tooth is commutating tooth.
The special-purpose intubate of retrievable intubate oil recovery bridging plug, there is internal thread the top connection upper end, and the lower end is threaded with intubate, embeds several sealing rings on the intubate periphery.
The beneficial effects of the utility model are, a kind of compact conformation is provided, and reliable operation, prevents the down-hole oil production instrument of tubing string wriggling at good sealing effect.This bridging plug is easy to operate, is easy to set and deblocking, can Ka Jing, reduce workover cost, and have remarkable economic efficiency.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the supporting special-purpose intubate of the utility model.
Among Fig. 1: 1, set pin; 2, set joint; 3, connector; 4, separate sealing joint; 5, lock ring; 6, deblocking pin; 7, lock dog; 8, mandrel; 9, lock tube; 10, sand control rubber; 11, spacing ring; 12, cone; 13, slips tube; 14, slips; 15, sealing shroud; 16 packing elements; 17, spacer ring; 18 and cap.Among Fig. 2: 19, top connection; 20, intubate; 21, sealing ring.
The specific embodiment
This retrievable intubate oil recovery bridging plug comprises: setting mechanism, anchor mechanism, sealing mechanism, solution sealing mechanism and special-purpose intubate.Wherein: setting mechanism comprise set pin, set joint, connector, lock ring, lock tube, lock dog; Anchor mechanism comprises lock ring, lock tube, lock dog, mandrel, cone, slips tube and slips; Sealing mechanism comprises sand control rubber, mandrel, slips tube, sealing shroud, packing element, spacer ring and cap; Separate sealing mechanism and comprise solution sealing joint, deblocking pin, lock dog, mandrel, lock tube, spacing ring, cone; Special-purpose intubate comprises top connection, intubate, sealing ring.
As shown in drawings, during use, at first the connector 3 with setting tool and retrievable intubate oil recovery bridging plug links to each other by screw thread, be lowered to the downhole designs position, start the bridging plug setting tool, setting tool produces huge following thrust and is setting on the joint 2, to descend thrust to pass down successively along cone 12 and slips tube 13 by setting joint 2 simultaneously, act at last on the packing element 16, thereby compression packing element 16, after packing element 16 compressions put in place, above-mentioned thrust down on sleeve pipe, realized the complete grappling of tubing string by slips 14 transferances.Meanwhile, lock ring is pushed into lock tube 9 bottoms for 5 times, with lock tube 9 lockings, guarantees that the packing element 16 after the compression is in sealing state.After said process was finished, setting tool continued pressurization, and 8 upper, annular groove places break with mandrel, and the realization bridging plug is given up, and trips out the bridging plug setting tool; During oil recovery, connect special-purpose intubate intubate top connection 19 with tubing string, intubate 20 is inserted into bridging plug sealing shroud 15 places, multi-layer sealed through sealing ring 21, realize inserting sealing and recover the oil; After the end of job, the upper lifting pipe post is extracted intubate, is lowered to the solution sealing joint 4 that bridging plug deblocking instrument is caught bridging plug, on carry bridging plug deblocking instrument, deblocking pin 6 is cut off, and lock dog 7 loses understands the fixing of sealing joint 4, and lock dog 7 skids off the lock dog groove of mandrel 8, the bridging plug self-locking releasing, sand control rubber 10, packing element 16 retractions, cone 12 up drive slips 14 are return in the slips tube 13 the bridging plug deblocking, take out with bridging plug deblocking instrument, after the cleaning maintenance, still continue to use.
Claims (3)
1. retrievable intubate oil recovery bridging plug, it is characterized in that: set fitting sleeve and separating on the sealing joint, being threaded on setting pin and setting the joint periphery, setting the pin lower step inserts in the periphery groove of separating sealing joint, setting joint is threaded with cone, spacing ring is enclosed within on the periphery of cone, be threaded with the slips tube, cone, the slips jacket casing is on mandrel, and slips and cone are slidingly connected by dovetail groove, and is positioned at the slip groove of slips tube, lock ring is positioned at and sets joint, and with set the joint saw-tooth thread and be connected, lock tube is enclosed within on the mandrel, lock dog is positioned at the lock dog groove of mandrel; The deblocking fitting sleeve is at connector, mandrel, lock tube, on the periphery of lock dog, the deblocking pin with separate the sealing joint periphery on be threaded, deblocking pin lower step is inserted in the periphery groove of mandrel, connector is connected with the mandrel internal thread, sealing shroud is connected with the mandrel external screw thread, packing element, spacer ring, the slips jacket casing is on sealing shroud, connector top has internal thread to be connected with the bridging plug setting tool, separating sealing joint top has external screw thread and inner via hole to be convenient to the salvaging of fishing tool deblocking, the lock tube periphery is provided with saw-tooth thread, be meshed with saw-tooth thread in the lock ring when bridging plug sets, mandrel is provided with cannelure, sets the disconnected cannelure of post-tensioning and realizes giving up in bridging plug.
2. retrievable intubate oil recovery bridging plug according to claim 1, it is characterized in that: anchor mechanism comprises lock ring, lock tube, lock dog, mandrel, cone, slips tube and slips, the slips tube adopts the side mode of windowing, slips stretches out or reclaims from slips side window that tube is opened, slip insert is made up of the tooth of two groups of different directions, first half tooth is pawl, and the Lower Half tooth is commutating tooth.
3. according to the special-purpose intubate of each described retrievable intubate oil recovery bridging plug among the claim 1-2, it is characterized in that: there is internal thread the top connection upper end, and the lower end is threaded with intubate, embeds several sealing rings on the intubate periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220605306 CN203145888U (en) | 2012-11-06 | 2012-11-06 | Removable inserting tube oil-extraction bridge plug and special-purpose inserting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220605306 CN203145888U (en) | 2012-11-06 | 2012-11-06 | Removable inserting tube oil-extraction bridge plug and special-purpose inserting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203145888U true CN203145888U (en) | 2013-08-21 |
Family
ID=48973424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220605306 Expired - Lifetime CN203145888U (en) | 2012-11-06 | 2012-11-06 | Removable inserting tube oil-extraction bridge plug and special-purpose inserting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203145888U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939402A (en) * | 2020-01-19 | 2020-03-31 | 中国石油化工股份有限公司 | Jet pump tubular column with intubate bridging plug |
| CN113638712A (en) * | 2021-08-30 | 2021-11-12 | 阜宁县宏达石化机械有限公司 | Reverse gravel throwing device |
| CN114059976A (en) * | 2021-11-24 | 2022-02-18 | 中国石油天然气股份有限公司 | Expanding type inserting device for high-pressure well injection |
| CN115182701A (en) * | 2021-04-06 | 2022-10-14 | 中国石油天然气股份有限公司 | Gas sealing tool and method |
-
2012
- 2012-11-06 CN CN 201220605306 patent/CN203145888U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939402A (en) * | 2020-01-19 | 2020-03-31 | 中国石油化工股份有限公司 | Jet pump tubular column with intubate bridging plug |
| CN115182701A (en) * | 2021-04-06 | 2022-10-14 | 中国石油天然气股份有限公司 | Gas sealing tool and method |
| CN113638712A (en) * | 2021-08-30 | 2021-11-12 | 阜宁县宏达石化机械有限公司 | Reverse gravel throwing device |
| CN113638712B (en) * | 2021-08-30 | 2024-05-28 | 阜宁县宏达石化机械有限公司 | Reverse gravel throwing device |
| CN114059976A (en) * | 2021-11-24 | 2022-02-18 | 中国石油天然气股份有限公司 | Expanding type inserting device for high-pressure well injection |
| CN114059976B (en) * | 2021-11-24 | 2024-01-30 | 中国石油天然气股份有限公司 | Expansion type insertion device for high-pressure well injection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |