CN201090165Y - Drilling bridging plug milling salvaging tool - Google Patents
Drilling bridging plug milling salvaging tool Download PDFInfo
- Publication number
- CN201090165Y CN201090165Y CNU2007201703777U CN200720170377U CN201090165Y CN 201090165 Y CN201090165 Y CN 201090165Y CN U2007201703777 U CNU2007201703777 U CN U2007201703777U CN 200720170377 U CN200720170377 U CN 200720170377U CN 201090165 Y CN201090165 Y CN 201090165Y
- Authority
- CN
- China
- Prior art keywords
- slips
- milling
- bridging plug
- lock tube
- conical surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
Disclosed is a drillable bridge plug milling and fishing tool which is applied to down hole operation in the oil field. The upper end of an upper joint has a drill pipe screw thread, the lower end of the upper joint is in threaded connection with an outer tube, and the lower end of the outer tube is in threaded connection with a mill shoe. The utility model is characterized in that: slips, a releasable lock casing, a fixed ring and a limit sleeve are arranged in the mill shoe. The lower part of the inner wall of the mill shoe has steps, and the upper parts of the steps have the fixed ring, the releasable lock casing and the limit sleeve sequentially from the lower to the upper. The inner wall of the releasable lock casing is a big-end-up inner circular conical surface, and the outer wall of the slips is a big-end-up outer circular conical surface. The outer circular conical surface of the slips is matched with the inner circular conical surface of the releasable lock casing. The utility model has the effects that: the milling and fishing can be completed at a time; and the safety and reliability in underground can be ensured. The fish head of the bridge plug can enter the fishing tool smoothly, thus increasing the success rate of fishing. The utility model can exit the well effectively when meeting obstructs.
Description
Technical field
It is a kind of at the oilfield downhole operation special tool that the utility model belongs to, and is a kind of special-purpose bridging plug fishing tool that the milling of drillable bridging plug is salvaged that is used for.
Background technology
What at present, the method widespread usage of removing drillable bridging plug under the oil well was bored in domestic oil field is flat junk mill instrument.Because the slips on the drillable bridging plug does not have anti-rotating function, when being lowered to flat junk mill milling drillable bridging plug operation, bridging plug can rotate together along with junk mill, causes milling efficient to reduce; With the passing of milling time, slip insert and sealing device on the drillable bridging plug are destroyed, and bridging plug is fallen into the shaft bottom, cause milling difficulty more, need 3～4 days time just can finish the bridging plug operation of milling down-hole sometimes.This flat junk mill instrument milling efficient is low, and the milling bridging plug activity duration is long, produces to the oil field and brings unnecessary economic loss.
The Chinese patent notification number is CN2646371Y, and a kind of novel bridging plug packaged milling tool that bores is provided.By top connection, steel ball, adapter sleeve, outer adapter sleeve, anti-rotation pin, central tube, brill mill cover, spring, slips, break the cover and the cover milling head form.This slips structure of boring bridging plug packaged milling tool employing dissection type, interlock tightens junk to make two slips move up and down mutually.One-trip string can be finished the brill that can bore bridging plug and mill and salvage, but its structure more complicated.
Summary of the invention
The purpose of this utility model provides a kind of drillable bridging plug milling fishing tool, when overcoming common flat junk mill milling bridging plug operation, the shortcoming that bridging plug rotates with junk mill, realize that single bridging plug milling is salvaged and once finish, total milling time is lower than 100 minutes, improves drillable bridging plug milling efficient and fishing success ratio.
The technical solution adopted in the utility model is: drillable bridging plug milling fishing tool comprises top connection, urceolus, slips, reversible lock tube, retainer ring, stop collar and milling shoe.There is drill rod thread, the top connection lower end urceolus that is threaded top connection upper end, the urceolus lower end milling shoe that is threaded, and the milling shoe lower end studs with the carbide cutter tool piece.It is characterized in that slips is arranged in the milling shoe, reversible lock tube, retainer ring and stop collar.Step is arranged at milling shoe inwall bottom, and retainer ring, reversible lock tube and stop collar are arranged from bottom to top successively at step top.Reversible lock tube inwall is a up big and down small internal conical surface, and the slips outer wall is a up big and down small outer conical surface.The outer conical surface of slips cooperates with the internal conical surface of reversible lock tube, and slips can be done in the reversible lock tube and move up and down or rotate.When slips during to lower slider, the slips internal diameter shrinks can tighten the drillable bridging plug.
Described slips is cylindric, and inner surface has the screw thread form slip insert.On the slips wall, be evenly distributed with 6 axially even distribution openings.The bottom of slips is divided into 6 arc slips.When slips during to lower slider, the internal diameter of slip insert dwindles chucking drillable bridging plug, can improve the success rate of grabbing the card bridging plug; The bridging plug mandrel can withdraw from safely when guaranteeing again to meet card in the construction.
Described reversible lock tube external surface design has 2～4 axial grooves, and its degree of depth is between 3～8 millimeters.In case be hampered when salvaging the drillable bridging plug, the upper lifting pipe post, the reversible lock tube upwards slides along the slips outer conical surface, and the reversible lock tube is subjected to the extruding of slips lateral force, and groove fracture is vertically released slips, guarantees that milling tool safety withdraws from.
The beneficial effects of the utility model: the utility model drillable bridging plug milling fishing tool retainer ring can be limited to the reversible lock tube center of milling shoe.Stop collar is the reversible lock tube fixedly, and the reversible lock tube can not be moved up and down.Slip insert can tighten the drillable bridging plug, improves the success rate that bridging plug is salvaged; The bridging plug mandrel can withdraw from safely when meeting card in the construction.
1. milling is salvaged and is once finished, and shortens the processing time, improves milling efficient and fishing success ratio.
2. slips can move up and down and rotate in milling shoe, and milling and salvaging are carried out synchronously, as long as milling is finished, slips will be grabbed and be dragged for fish, has improved fishing success ratio greatly.
3. milling fishing tool safety can be tripped out when the reversible lock tube is guaranteed the card tubing string.
Description of drawings
Fig. 1 is the utility model drillable bridging plug milling fishing tool structural profile sketch.
Fig. 2 is the local enlarged diagram of Fig. 1.
Fig. 3 is the utility model is salvaged original state in milling a schematic diagram.
Fig. 4 is that the utility model is finished in milling, prepares the schematic diagram of salvaging state.
Among the figure, 1. top connection, 2. urceolus, 3. slips, 4. stop collar, 5. reversible lock tube, 6. retainer ring, 7. milling shoe.
The specific embodiment
Embodiment 1: consult Fig. 1 and Fig. 2." drillable bridging plug milling fishing tool is an example, describes with one 7.Drillable bridging plug milling fishing tool comprises top connection 1, urceolus 2, slips 3, reversible lock tube 5, retainer ring 6, stop collar 4 and milling shoe 7.There is 41/2 " drilling tool screw thread of jointed rod top connection 1 upper end.The top connection 1 lower end urceolus 2 that is threaded, the external diameter of urceolus 2 is 145 millimeters, length is 445 millimeters.The urceolus 2 lower ends milling shoe 7 that is threaded, milling shoe 7 external diameters are 154 millimeters, internal diameter is 100 millimeters.Milling shoe 7 lower ends stud with the carbide cutter tool piece.Slips 3 external diameters are 110 millimeters.
Step is arranged at milling shoe 7 inwall bottoms, and retainer ring 6, reversible lock tube 5 and stop collar 4 are arranged from bottom to top successively at step top.Reversible lock tube 5 inwalls are up big and down small internal conical surfaces, and slips 3 outer walls are up big and down small outer conical surface.The outer conical surface of slips 3 cooperates with the internal conical surface of reversible lock tube 5, and tapering is 1: 6.
In the design of reversible lock tube 5 external surfaces 3 axial grooves are arranged, its degree of depth is 5 millimeters.
Even cloth toothing scheme is adopted in milling shoe 7 lower ends, and milling shoe 7 heads are pressed evenly 15 grooves of distribution of circumference, tungsten carbide button's cutter piece in each groove, and angle is 24 ° between interior groove, and angle is 48 ° between external slot, and this structure improves milling efficient effectively.
Operating principle:
Consult Fig. 3 and Fig. 4." after bridging plug set, mandrel exposed 158.54mm to bridge plug seat envelope schematic diagram: 7, the φ 93.65mm of outside diameter of mandrel.
Milling step 1: the drillable bridging plug milling fishing tool bridging plug place that goes into the well, slips 3 enters the bridging plug mandrel and gives certain clamping force, and behind milling shoe 7 contact bridge Sai Kawa 3, slips 3 is pushed to the big end of reversible lock tube 5 internal taper holes.
Milling step 2: after milling begins, milling shoe 7 divests elements such as (milling) bridging plug slips, rubber sealing boot, the slips 3 of drillable bridging plug milling fishing tool keeps motionless owing to being in the big end of reversible lock tube 5 internal taper holes, when milling shoe 7 is finished after the peeling off of bridging plug slips and potted component, bridging plug moves down by deadweight, bridging plug mandrel pulling fishing tool slips moves up into reversible lock tube 5 internal taper hole small ends for 3 times and stuck, trips out the milling of finishing the drillable bridging plug behind the drill string and salvages.
Claims (4)
1. a drillable bridging plug milling fishing tool comprises top connection (1), urceolus (2), slips (3), reversible lock tube (5), retainer ring (6), stop collar (4) and milling shoe (7), there is drill rod thread top connection (1) upper end, top connection (1) the lower end urceolus (2) that is threaded, urceolus (2) the lower end milling shoe (7) that is threaded, milling shoe (7) lower end studs with the carbide cutter tool piece, and it is characterized in that has slips (3), reversible lock tube (5), retainer ring (6) and stop collar (4) in the milling shoe (7); Step is arranged at milling shoe (7) inwall bottom, retainer ring (6), reversible lock tube (5) and stop collar (4) are arranged from bottom to top successively at step top, reversible lock tube (5) inwall is a up big and down small internal conical surface, slips (3) outer wall is a up big and down small outer conical surface, and the outer conical surface of slips (3) cooperates with the internal conical surface of reversible lock tube (5).
2. drillable bridging plug milling fishing tool according to claim 1, it is characterized in that: described slips (3) is for cylindric, its external surface is coniform, inner surface has the thread-shaped slip insert, and 6 axially evenly distribution openings are arranged on the slips wall, the bottom of slips (3) is divided into 6 arc slips.
3. drillable bridging plug milling fishing tool according to claim 1 and 2 is characterized in that: described reversible lock tube (5) external surface has 2～4 axial grooves, and the axial groove degree of depth is between 3～8 millimeters.
4. drillable bridging plug milling fishing tool according to claim 1 and 2, it is characterized in that: the even cloth tooth in milling shoe (7) lower end, milling shoe (7) head are pressed evenly 15 grooves of distribution of circumference, tungsten carbide button's cutter piece in each groove, angle is 24 ° between interior groove, and angle is 48 ° between external slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201703777U CN201090165Y (en) | 2007-08-27 | 2007-08-27 | Drilling bridging plug milling salvaging tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201703777U CN201090165Y (en) | 2007-08-27 | 2007-08-27 | Drilling bridging plug milling salvaging tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090165Y true CN201090165Y (en) | 2008-07-23 |
Family
ID=39861925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201703777U Expired - Fee Related CN201090165Y (en) | 2007-08-27 | 2007-08-27 | Drilling bridging plug milling salvaging tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090165Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223893A (en) * | 2016-09-13 | 2016-12-14 | 吉林大学 | A kind of multi-functional interior flat dart |
| CN106761520A (en) * | 2016-12-13 | 2017-05-31 | 中国石油化工股份有限公司 | Mechanical set drags for integrated tool and its application method |
| CN106930714A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | A kind of coiled tubing underground releasing tool |
| CN107165598A (en) * | 2017-06-01 | 2017-09-15 | 中国石油天然气股份有限公司 | Cable spasm device |
| CN107288567A (en) * | 2017-08-10 | 2017-10-24 | 贵州高峰石油机械股份有限公司 | A kind of reversible set milling fishing integrated device and its Refloatation method |
| CN116146135A (en) * | 2023-04-23 | 2023-05-23 | 中石化西南石油工程有限公司 | A cover and drag for integrated device that is used for constant pressure trap plugging tool fish of well drilling |
-
2007
- 2007-08-27 CN CNU2007201703777U patent/CN201090165Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930714A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | A kind of coiled tubing underground releasing tool |
| CN106223893A (en) * | 2016-09-13 | 2016-12-14 | 吉林大学 | A kind of multi-functional interior flat dart |
| CN106223893B (en) * | 2016-09-13 | 2018-08-21 | 吉林大学 | A kind of multi-functional interior flat dart |
| CN106761520A (en) * | 2016-12-13 | 2017-05-31 | 中国石油化工股份有限公司 | Mechanical set drags for integrated tool and its application method |
| CN106761520B (en) * | 2016-12-13 | 2023-07-11 | 中国石油化工股份有限公司 | Mechanical sleeving and fishing integrated tool and using method thereof |
| CN107165598A (en) * | 2017-06-01 | 2017-09-15 | 中国石油天然气股份有限公司 | Cable spasm device |
| CN107288567A (en) * | 2017-08-10 | 2017-10-24 | 贵州高峰石油机械股份有限公司 | A kind of reversible set milling fishing integrated device and its Refloatation method |
| CN107288567B (en) * | 2017-08-10 | 2023-04-07 | 贵州高峰石油机械股份有限公司 | Retractable type milling and fishing integrated device and fishing method thereof |
| CN116146135A (en) * | 2023-04-23 | 2023-05-23 | 中石化西南石油工程有限公司 | A cover and drag for integrated device that is used for constant pressure trap plugging tool fish of well drilling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201090165Y (en) | Drilling bridging plug milling salvaging tool | |
| US8002030B2 (en) | Retrievable bridge plug | |
| CA2516074C (en) | Expandable whipstock anchor assembly | |
| US5018580A (en) | Section milling tool | |
| US3608634A (en) | Hydraulic set liner hanger | |
| NO312977B1 (en) | Tubular anchor assembly, which is coaxially and releasably attachable to an underground borehole liner | |
| NO313890B1 (en) | cutting tool | |
| CN111236872B (en) | Directional rope core drill and drilling method thereof | |
| US4893675A (en) | Section milling tool | |
| US2904114A (en) | Well bore packer removing tool | |
| CN105625986A (en) | Scraper-controllable multifunctional wall scraping device | |
| US2708103A (en) | Combination drill and core bit | |
| US9284807B1 (en) | Retrieval tool | |
| US4969528A (en) | Method and apparatus for continuous pilot hole coring | |
| NO340210B1 (en) | Locking mechanism for a cutting tool and method for operating a locking mechanism for a cutting tool | |
| CN109751003B (en) | Safe rotary pressure-maintaining coring method for ocean drilling | |
| CN114607308B (en) | Bridge plug fishing tool | |
| CN210685904U (en) | Easy-to-release milling and fishing integrated device | |
| CN110700779B (en) | Integral water plugging pipe column suitable for plugging shale gas horizontal well | |
| CN115199228B (en) | Drilling-free windowing sidetracking tool and casing windowing sidetracking construction method | |
| CN114293942B (en) | Milling and cutting integrated device for coiled tubing salvaging sleeve | |
| WO1995023274A1 (en) | Retrievable whipstock arrangement and method | |
| CN216841535U (en) | Integrated abandoned well casing cutting fisher | |
| CA2790548C (en) | Wellbore cementing tool having outwardly biased locking members | |
| CN103321625A (en) | Rotation-free locking ring type sliding sleeve with ball seat capable of being taken out |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA PETROLEUM GROUP POHAI DRILLING ENGINEERING C Free format text: FORMER OWNER: INST OF DRILLING-WELL TECHNOLOGY, HUABEI PETROLEUM ADMINISTRATION Effective date: 20090508 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090508 Address after: No. 106 Huang Hai Road, Tianjin economic and Technological Development Zone, post code: 300457 Patentee after: CNPC Bohai Drilling Engineering Co., Ltd. Address before: Research Institute of Huabei Petroleum Drilling Technology Institute, Hebei, Renqiu 062552, China Patentee before: Inst of Drilling-Well Technology, Huabei Petroleum Administration |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20150827 |
|
| EXPY | Termination of patent right or utility model |