CN203978377U - The mud grouting float collar float plug that a kind of oil well cementing is used - Google Patents
The mud grouting float collar float plug that a kind of oil well cementing is used Download PDFInfo
- Publication number
- CN203978377U CN203978377U CN201420315151.1U CN201420315151U CN203978377U CN 203978377 U CN203978377 U CN 203978377U CN 201420315151 U CN201420315151 U CN 201420315151U CN 203978377 U CN203978377 U CN 203978377U
- Authority
- CN
- China
- Prior art keywords
- float
- piston
- hole
- floating drum
- cylindrical shell
- 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
Landscapes
- Revetment (AREA)
Abstract
The utility model relates to the mud grouting float collar float plug that a kind of oil well cementing is used, comprise float collar and float shoe, float collar comprises cylindrical shell, on cylindrical shell top, diversion tube is installed, described float shoe is fixedly installed in diversion tube, is provided with concrete articulamentum between the inwall of cylindrical shell and diversion tube; In float shoe body, be provided with spring pedestal, spring is arranged on the top of spring pedestal; Described float shoe bottom is provided with ball float seat, and ball float is fixedly connected with fixed mount on the cylinder inboard wall of portion in the key, and floating drum seat is installed at fixed mount middle part; On floating drum seat piston-top surface, be provided with symmetrical claw; Float shoe body is respectively equipped with cocycle through hole and lower circulation through hole.The utility model is reasonable in design, simple in structure, easy to use, reliable operation, utilize it can in oil well cementing operation process, improve instantaneity and the reliability of sealing, realize instantaneous sealing, reach the object that cement plug is not stayed in the rear shaft bottom of well cementation, can also avoid returning because of cement paste the potential safety hazard that delays the activity duration and bring.
Description
Technical field
The utility model relates to a kind of downhole tool of oilfield producing well well cementing operation, the mud grouting float collar float plug that particularly a kind of oil well cementing is used.
Background technology
In oil drilling well cementing operation, need in the well of having bored, be lowered to sleeve pipe, injected water mud, with plug or clear water, do isolated substance, be placed in cement paste top, then inject mud, control flow to sleeve bottom float collar float plug place, cement paste is ejected outside sleeve pipe, termination of pumping, build the pressure, wait waiting on cement.In setting of casing process, unidirectional by the function of fluid due to float collar, float shoe, sleeve pipe produces buoyancy after being lowered to certain depth, affects setting of casing speed, must stop casing job, pours in time mud, balance buoyancy; Meanwhile, because float shoe adopts glueballs floating seal mode, this kind of sealing means lacks sealing instantaneity, the time that causes cement paste to have to return.Before well cementation, through circulation, due to the hydraulic blow of drilling fluid, the sealing performance of glueballs is damaged, and the space that cement paste is had return, often after well cementing operation, can cause the adverse consequences that leaves cement plug.To this, while finding that cement paste returns phenomenon after the well cementation of scene, common employing builds the pressure, waits solidifying mode and processes, and has so both delayed the time of well cementing operation, also has potential safety hazard.If sleeve pipe dwell time is long, easily make sleeve pipe be bonded on the borehole wall, formation accident.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, the mud grouting float collar float plug that provides a kind of oil well cementing to use.
Its technical scheme is: comprise float collar and float shoe, described float collar comprises cylindrical shell cylindraceous (21), on the inwall suitable for reading of cylindrical shell (21), be provided with internal thread, on the outer wall of end opening, be provided with external screw thread, diversion tube (19) is installed on the ladder inwall on cylindrical shell (21) top, described float shoe is coaxially fixedly installed in diversion tube (19), between the inwall of cylindrical shell (21) and diversion tube (19), is provided with concrete articulamentum (18); Described float shoe comprises float shoe body (1), piston baffle (2), packed-piston (20), O-ring seal (3), spring (17), spring pedestal (5), is provided with spring pedestal (5) in float shoe body (1); Spring (17) is arranged on the top of spring pedestal (5), and the bottom of spring (17) is fixedly connected with spring pedestal (5); The top of spring (17) is provided with packed-piston (20), and O-ring seal (3) is located at the surface of packed-piston (20), and the top of packed-piston is fixedly connected with piston baffle (2); Described float shoe bottom is provided with by screw thread the ball float seat (16) that bottom has cone shaped opening, on the cylindrical shell of float shoe bottom (21) inwall, be fixedly connected with the ball float basket (13) that ball float (14) is housed, on cylindrical shell (21) inwall of ball float basket (13) bottom, be fixedly connected with the fixed mount (11) with cylinder inner wall, fixed mount middle part is provided with the floating drum seat (9) with piston, and the piston of floating drum seat (9) matches with the cylinder inner wall of fixed mount (11); At floating drum seat, flying piston has and on the end face of through hole, is provided with the symmetrical claw (12) that ball float (14) is stuck in to ball float basket (13) bottom; In the bottom of floating drum seat, be provided with the floating drum (7) that floating drum seat seat hole and sidewall have through hole, floating drum (7) coordinates in the seat hole that is arranged on floating drum seat by the disk rib on top, is installed with the pallet (8) with through hole in the cylindrical shell (21) of floating drum seat bottom.
Above-mentioned float shoe body (1) the top opening that is in the shape of the letter V, described packed-piston (20) matches with the inwall of float shoe body (1) by being located at its surperficial O-ring seal (3).
On above-mentioned ball float seat (16) outer wall, be also provided with sealing ring (15), by sealing ring, match with cylindrical shell (21).
The end face two ends that the piston of above-mentioned floating drum seat (9) has through hole are also provided with positioning convex ring (10), by positioning convex ring, match with the cylinder inner wall of fixed mount.
The middle part of above-mentioned float shoe body (1) and bottom are respectively equipped with cocycle through hole (4) and lower circulation through hole (6), and described spring pedestal (5) is positioned between cocycle through hole (4) and lower circulation through hole (6).
Above-mentioned spring (17) is when straight configuration, and packed-piston (20) is positioned at the top of cocycle through hole (4).
The beneficial effects of the utility model are: the present invention is reasonable in design, simple in structure, easy to use, reliable operation, utilize it can in oil well cementing operation process, improve instantaneity and the reliability of sealing, realize instantaneous sealing, reach the object that cement plug is not stayed in the rear shaft bottom of well cementation, can also avoid returning because of cement paste the potential safety hazard that delays the activity duration and bring.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
In upper figure: float shoe body 1, piston baffle 2, O-ring seal 3, cocycle through hole 4, spring pedestal 5, lower circulation through hole 6, floating drum 7, pallet 8, floating drum seat 9, positioning convex ring 10, fixed mount 11, symmetrical claw 12, ball float basket 13, ball float 14, sealing ring 15, ball float seat 16, spring 17, concrete articulamentum 18, diversion tube 19, packed-piston 20, cylindrical shell 21.
The specific embodiment
By reference to the accompanying drawings 1, the utility model will be further described:
The utility model comprises float collar and float shoe, described float collar comprises cylindrical shell 21 cylindraceous, on the inwall suitable for reading of cylindrical shell 21, be provided with internal thread, on the outer wall of end opening, be provided with external screw thread, on the ladder inwall on cylindrical shell 21 tops, diversion tube 19 is installed, described float shoe is coaxially fixedly installed in diversion tube 19, between the inwall of cylindrical shell 21 and diversion tube 19, is provided with concrete articulamentum 18; Described float shoe comprises float shoe body 1, piston baffle 2, packed-piston 20, O-ring seal 3, spring 17, spring pedestal 5, is provided with spring pedestal 5 in float shoe body 1; Spring 17 is arranged on the top of spring pedestal 5, and the bottom of spring 17 is fixedly connected with spring pedestal 5; The top of spring 17 is provided with packed-piston 20, and O-ring seal 3 is located at the surface of packed-piston 20, and the top of packed-piston is fixedly connected with piston baffle 2; Described float shoe bottom is provided with by screw thread the ball float seat 16 that bottom has cone shaped opening, on cylindrical shell 21 inwalls of float shoe bottom, be fixedly connected with the ball float basket 13 that ball float 14 is housed, on cylindrical shell 21 inwalls of ball float basket 13 bottoms, be fixedly connected with the fixed mount 11 with cylinder inner wall, fixed mount middle part is provided with the floating drum seat 9 with piston, and the piston of floating drum seat 9 matches with the cylinder inner wall of fixed mount 11; At floating drum seat, flying piston has on the end face of through hole and is provided with the symmetrical claw 12 that ball float 14 is stuck in to ball float basket 13 bottoms; In the bottom of floating drum seat, be provided with the floating drum 7 that floating drum seat seat hole and sidewall have through hole, floating drum 7 coordinates in the seat hole that is arranged on floating drum seat by the disk rib on top, in the cylindrical shell 21 of floating drum seat bottom, be installed with the pallet 8 with through hole, the middle part of above-mentioned float shoe body 1 and bottom are respectively equipped with cocycle through hole 4 and lower circulation through hole 6, and described spring pedestal 5 is between cocycle through hole 4 and lower circulation through hole 6; Above-mentioned spring 17 is when straight configuration, and packed-piston 20 is positioned at the top of cocycle through hole 4.
Wherein, the float shoe body 1 top opening that is in the shape of the letter V, described packed-piston 20 matches with the inwall of float shoe body 1 by being located at its surperficial O-ring seal 3.
On above-mentioned ball float seat 16 outer walls, be also provided with sealing ring 15, by sealing ring, match with cylindrical shell 21.
The end face two ends that the piston of above-mentioned floating drum seat 9 has through hole are also provided with positioning convex ring 10, by positioning convex ring, match with the cylinder inner wall of fixed mount.
When oil drilling well cementing operation, the utility model device is installed in lower end at sleeve pipe, is lowered to sleeve pipe, injected water mud in the well of having bored, with plug or clear water, do isolated substance, be placed in cement paste top, then inject mud, mud floats floating drum, and enter in floating drum seat from the through hole of floating drum sidewall, top board through hole through top land, enters sleeve pipe by ball float basket, diversion tube, reduces sleeve pipe buoyancy.Instantly during complete sleeve pipe well-flushing, utilize from well head to well in the pressure of circulation well cleanup, floating drum and floating drum seat are pushed open, in the process moving down at floating drum, ball float departs from claw, the effect of recovery one-way sealing.Floating drum seat moves down together with piston, departs from fixed mount, fall on pallet, because of end in contact pallet under floating drum, the through hole that floating drum jack-up is made to floating drum wall and floating drum seat together with, reopen passage, fluid is passed through, carry out cement injection, replace drilling mud practice.Can in oil well cementing operation process, improve instantaneity and the reliability of sealing, realize the object of instantaneous sealing simultaneously.Due to after completing well cementation, the ball float automatically floating ball float seat of getting back to forms sealing, has prevented that cement paste refluence from entering sleeve pipe, and has formed the drawback of cement plug, has improved cementing quality.The present invention is reasonable in design, simple in structure, easy to use, reliable operation, utilize it can in oil well cementing operation process, improve instantaneity and the reliability of sealing, realize instantaneous sealing, reach the object that cement plug is not stayed in the rear shaft bottom of well cementation, can also avoid returning because of cement paste the potential safety hazard that delays the activity duration and bring.
Claims (6)
1. the mud grouting float collar float plug that oil well cementing is used, it is characterized in that: comprise float collar and float shoe, described float collar comprises cylindrical shell cylindraceous (21), on the inwall suitable for reading of cylindrical shell (21), be provided with internal thread, on the outer wall of end opening, be provided with external screw thread, diversion tube (19) is installed on the ladder inwall on cylindrical shell (21) top, described float shoe is coaxially fixedly installed in diversion tube (19), between the inwall of cylindrical shell (21) and diversion tube (19), is provided with concrete articulamentum (18); Described float shoe comprises float shoe body (1), piston baffle (2), packed-piston (20), O-ring seal (3), spring (17), spring pedestal (5), is provided with spring pedestal (5) in float shoe body (1); Spring (17) is arranged on the top of spring pedestal (5), and the bottom of spring (17) is fixedly connected with spring pedestal (5); The top of spring (17) is provided with packed-piston (20), and O-ring seal (3) is located at the surface of packed-piston (20), and the top of packed-piston is fixedly connected with piston baffle (2); Described float shoe bottom is provided with by screw thread the ball float seat (16) that bottom has cone shaped opening, on the cylindrical shell of float shoe bottom (21) inwall, be fixedly connected with the ball float basket (13) that ball float (14) is housed, on cylindrical shell (21) inwall of ball float basket (13) bottom, be fixedly connected with the fixed mount (11) with cylinder inner wall, fixed mount middle part is provided with the floating drum seat (9) with piston, and the piston of floating drum seat (9) matches with the cylinder inner wall of fixed mount (11); At floating drum seat, flying piston has and on the end face of through hole, is provided with the symmetrical claw (12) that ball float (14) is stuck in to ball float basket (13) bottom; In the bottom of floating drum seat, be provided with the floating drum (7) that floating drum seat seat hole and sidewall have through hole, floating drum (7) coordinates in the seat hole that is arranged on floating drum seat by the disk rib on top, is installed with the pallet (8) with through hole in the cylindrical shell (21) of floating drum seat bottom.
2. the mud grouting float collar float plug that a kind of oil well cementing according to claim 1 is used, it is characterized in that: described float shoe body (1) the top opening that is in the shape of the letter V, described packed-piston (20) matches with the inwall of float shoe body (1) by being located at its surperficial O-ring seal (3).
3. the mud grouting float collar float plug that a kind of oil well cementing according to claim 1 is used, is characterized in that: on described ball float seat (16) outer wall, be also provided with sealing ring (15), by sealing ring, match with cylindrical shell (21).
4. the mud grouting float collar float plug that a kind of oil well cementing according to claim 1 is used, it is characterized in that: the end face two ends that the piston of described floating drum seat (9) has through hole are also provided with positioning convex ring (10), by positioning convex ring, match with the cylinder inner wall of fixed mount.
5. the mud grouting float collar float plug that a kind of oil well cementing according to claim 1 is used, it is characterized in that: the middle part of described float shoe body (1) and bottom are respectively equipped with cocycle through hole (4) and lower circulation through hole (6), described spring pedestal (5) is positioned between cocycle through hole (4) and lower circulation through hole (6).
6. the mud grouting float collar float plug that a kind of oil well cementing according to claim 5 is used, is characterized in that: described spring (17) is when straight configuration, and packed-piston (20) is positioned at the top of cocycle through hole (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420315151.1U CN203978377U (en) | 2014-06-13 | 2014-06-13 | The mud grouting float collar float plug that a kind of oil well cementing is used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420315151.1U CN203978377U (en) | 2014-06-13 | 2014-06-13 | The mud grouting float collar float plug that a kind of oil well cementing is used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978377U true CN203978377U (en) | 2014-12-03 |
Family
ID=51975836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420315151.1U Expired - Fee Related CN203978377U (en) | 2014-06-13 | 2014-06-13 | The mud grouting float collar float plug that a kind of oil well cementing is used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203978377U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155964A (en) * | 2020-03-10 | 2020-05-15 | 何华 | A exempt from to bore stopper cementing ware for oil development |
-
2014
- 2014-06-13 CN CN201420315151.1U patent/CN203978377U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155964A (en) * | 2020-03-10 | 2020-05-15 | 何华 | A exempt from to bore stopper cementing ware for oil development |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204436320U (en) | A kind of hydraulic releasing big orifice packer | |
| CN100538003C (en) | The expansion sieve tube hanging method | |
| CN204609831U (en) | A kind of mud grouting float collar float plug of oil well cementing | |
| CN105239947A (en) | Seafloor sediment coring device applicable to seafloor drilling machine | |
| CN101929318A (en) | Stage cementing device | |
| CN203978377U (en) | The mud grouting float collar float plug that a kind of oil well cementing is used | |
| CN204327042U (en) | Cementing plug bruising positioner | |
| CN201439701U (en) | Stage cementing distributor | |
| CN203716926U (en) | Bumping well cementing tool for long horizontal section well | |
| CN107939335B (en) | Wear-resistant anti-backflow double-rubber-plug system for well cementation and using method | |
| CN201187278Y (en) | Automatic mud grouting floating hoop and floating shoe | |
| CN104895526A (en) | Hydraulic cement basket | |
| CN204175231U (en) | Back-off packer | |
| CN204212709U (en) | Mechanical plugging process pipe column capable of being tested | |
| CN103758476B (en) | Non-cementing expansion type liner hanger | |
| CN110067528A (en) | Oil well cementing method and single-flow cementing tool | |
| CN205577920U (en) | Deep -sea sediment held coring device suitable for seabed rig | |
| CN203878582U (en) | Double-vortex-hole drive rotary spraying device for aiding rising of marine drilling platform pile shoe | |
| CN204571854U (en) | Middle matter oil leakage loses well test string | |
| CN205955698U (en) | Annotate grey sliding sleeve switch | |
| CN203626717U (en) | Drillable type casing float collar float shoe | |
| CN201292819Y (en) | Simple floating hoop for well drilling completion | |
| CN203878584U (en) | Upper turbine lower vortex hole drive rotary spraying device for aiding rising of marine drilling platform pile shoe | |
| CN205638344U (en) | Pulse machinery striking formula well cementation vibrator | |
| CN206280052U (en) | Underground barrier valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20150613 |
|
| EXPY | Termination of patent right or utility model |