CN115030668A - Float collar float shoe for well cementation construction - Google Patents
Float collar float shoe for well cementation construction Download PDFInfo
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- CN115030668A CN115030668A CN202210956972.2A CN202210956972A CN115030668A CN 115030668 A CN115030668 A CN 115030668A CN 202210956972 A CN202210956972 A CN 202210956972A CN 115030668 A CN115030668 A CN 115030668A
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- valve core
- stop valve
- sealing
- support plate
- seat
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 77
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 abstract description 13
- 238000007569 slipcasting Methods 0.000 description 16
- 239000004568 cement Substances 0.000 description 14
- 239000011440 grout Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/14—Casing shoes for the protection of the bottom of the casing
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention provides a float collar float shoe for well cementation construction, and relates to the technical field of well cementation construction equipment. The float collar float shoe for well cementation construction comprises a shell, wherein an internal thread is formed in the top of the inner wall of the shell, a stop valve seat is fixedly connected to the inner wall of the shell and comprises a valve seat main body, a grouting hole is formed in the center of the valve seat main body, a grouting channel is formed in the bottom of the grouting hole, and a drainage support plate is fixedly connected to the bottom of the inner wall of the shell; the center of the bottom of the stop valve seat is provided with a stop valve core, an elastic reset mechanism is arranged between the stop valve core and the drainage support plate, and the bottom of the stop valve core is fixedly connected with an auxiliary sealing mechanism corresponding to the drainage support plate. By simply designing the stop valve seat and the stop valve core, the bottom end of the grouting hole can be blocked by the matching of the inverted hook sealing groove and the annular plug, and the bottom end of the grouting channel can be blocked by the matching of the spherical plug and the sealing base, so that the sealing efficiency can be further improved, and the slurry is prevented from leaking.
Description
Technical Field
The invention relates to the technical field of well cementation construction equipment, in particular to a float collar float shoe for well cementation construction.
Background
The float collar float shoe is a kind of guide shoe or coupling for producing buoyancy, and has high heat resistance, good sealing performance, good drillability and convenient connection. The float shoe or float collar can be used for common technical casing and oil layer casing, and also can be used for deep well, ultra-deep well and special process well.
The float collar float shoe is one of oil drilling equipment accessories, is the indispensable instrument of well cementation construction, there is the float collar float shoe of multiple different grade type in the existing market, but the structural design of present most float collar float shoes is too simple, especially, seal structure, generally only design has a sealed case, after the slip casting is accomplished, sealed case relies on the elasticity of spring to withstand sealed case and blocks up the slip casting hole alone, under the high temperature high pressure state in the well, the performance of spring has reduction to a certain extent, lead to the compactness between sealed case and the slip casting hole to reduce to some extent easily, thereby cause the leakage of grout easily, even the grout refluence, and then influence the well cementation quality.
Therefore, a new float collar float shoe for well cementation construction is developed.
Disclosure of Invention
The invention provides a float collar float shoe for well cementation construction, which solves the problems that most existing float collar float shoes are too simple in structural design, particularly, a sealing structure is only designed with a sealing valve core, after grouting is completed, the sealing valve core is purely propped against the sealing valve core by means of the elastic force of a spring to block a grouting hole, the performance of the spring is reduced to a certain degree under the high-temperature and high-pressure state in a well, the tightness between the sealing valve core and the grouting hole is easily reduced, and therefore cement slurry leakage, even backflow of cement slurry is easily caused, and further the well cementation quality is affected.
In order to achieve the purpose, the invention is realized by the following technical scheme: a float collar float shoe for well cementation construction comprises a shell, wherein the top of the inner wall of the shell is provided with an internal thread, the inner wall of the shell is fixedly connected with a stop valve seat, and the bottom of the inner wall of the shell is fixedly connected with a drainage support plate;
the stop valve seat comprises a valve seat main body, the center of the valve seat main body is provided with a grouting hole, the bottom of the grouting hole is provided with a grouting channel, the top of the grouting channel is provided with a barb sealing groove corresponding to the grouting hole, and the barb sealing groove is in a barb shape;
a stop valve core is arranged at the center of the bottom of the stop valve seat, the stop valve core comprises a sealing base, a spherical plug is arranged at the center of the top of the sealing base, a valve core main body is arranged at the center of the top of the spherical plug, an annular plug is arranged on the periphery of the top of the valve core main body, the center of the top of the spherical plug is a hemisphere, and a sealing lip is arranged on the periphery of the top;
the sealing base, the spherical plug, the valve core main body and the annular plug are of an integrated structure, and when the stop valve core is in a closed state, a hemisphere at the top of the annular plug is inserted into the bottom of the grouting hole, and the sealing lip is inserted into the inverted hook sealing groove and mutually and tightly attached;
an elastic reset mechanism is arranged between the stop valve core and the drainage support plate, and the bottom of the stop valve core is fixedly connected with an auxiliary sealing mechanism corresponding to the drainage support plate.
Preferably, the stop valve seat comprises a valve seat main body, a grouting hole is formed in the center of the valve seat main body, a grouting channel is formed in the bottom of the grouting hole, and an inverted hook sealing groove corresponding to the grouting hole is formed in the top of the grouting channel.
Through above-mentioned technical scheme, stop the disk seat and be used for the slip casting water conservancy diversion of grout, when stopping slip casting, accomplish sealed by the disk seat is stopped in the cooperation of the case that ends to the end, prevent mud refluence.
Through above-mentioned technical scheme, end the case and be used for the cooperation to end the disk seat and accomplish the sealed of slip casting hole and slip casting passageway.
Preferably, the sealing base, the spherical plug, the valve core main body and the annular plug are of an integrated structure, and the inner side of the annular plug is tightly attached to the inverted hook sealing groove in the closed state of the stop valve core.
Through above-mentioned technical scheme, when not slip casting, in the case main part was pushed up into the slip casting passageway by elasticity canceling release mechanical system, and the inboard of annular stopper closely laminated with the overhead kick seal groove, shutoff slip casting hole bottom, spherical stopper cooperation sealing base shutoff slip casting passageway bottom.
Preferably, the drainage support plate includes the support plate main part, support plate main part top center fixedly connected with fixing base, a plurality of drainage holes and spacing hole have been seted up to support plate main part top week side.
Through above-mentioned technical scheme, the grout that gets into through ending the disk seat can be fallen on the support plate main part, then flows into in the well through a plurality of drainage holes again.
Preferably, the support plate main body and the fixing seat are of an integrated structure, and a round hole is formed in the center of the top of the fixing seat.
Through above-mentioned technical scheme for the valve rod can run through the support plate main part, also does not influence the normal work of valve rod simultaneously.
Preferably, the elastic reset mechanism comprises a valve core seat, a valve rod is fixedly connected to the center of the bottom of the valve core seat, and a reset spring is sleeved on the outer wall of the valve rod.
Through the technical scheme, when the stop valve core moves downwards under the pressure of cement paste, the stop valve core can downwards extrude the reset spring, so that the cement paste can enter the grouting channel through the grouting holes and then flow into the well through the drainage holes, after grouting is completed, the pressure applied by the cement paste to the stop valve core disappears, and at the moment, under the elastic action of the reset spring, the stop valve core can be jacked up, so that the bottom of the stop valve seat is sealed.
Preferably, the bottom of the valve core seat is provided with a first limiting groove, the top of the fixed seat is provided with a second limiting groove, and the top end and the bottom end of the reset spring are respectively sleeved between the first limiting groove and the second limiting groove.
Through the technical scheme, the positioning and limiting of the reset spring can be realized, and meanwhile, the reset spring can be utilized to support the stop valve core.
Preferably, the auxiliary sealing mechanism comprises a plurality of limiting rods, the limiting rods are fixed on the periphery of the bottom of the sealing base and penetrate through corresponding limiting holes, the bottom of the limiting rods is fixedly connected with a bottom sealing plate, and a through hole is formed in the center of the bottom sealing plate.
Through the technical scheme, the bottom closing plate can follow through a plurality of gag lever posts and carry out synchronous motion by the case, when the grout, the pressure of grout can be backed down by the case, make it move down, meanwhile, the bottom closing plate also can be under the drive of a plurality of gag lever posts synchronous downshifting, make the bottom closing plate break away from the support plate main part, and make a plurality of drainage holes automatic open, make the entering can carry out the slip casting through a plurality of drainage holes by the grout between disk seat and the drainage support plate, after the slip casting is accomplished, by case and supplementary sealing mechanism reset, under the effect of mud pressure in the well, can upwards jack-up the bottom closing plate, make the bottom closing plate closely laminate support plate main part bottom, thereby further improve the leakproofness of whole device.
The invention provides a float collar float shoe for well cementation construction. The method has the following beneficial effects:
1. this well cementation construction is with float collar float shoe, simply by the disk seat and by the case through the design, can utilize overhead kick seal groove cooperation annular stopper shutoff slip casting hole bottom, spherical stopper cooperation sealing base shutoff slip casting passageway bottom can further improve sealed efficiency, prevents that mud from taking place to leak.
2. This well cementation construction is with float collar float shoe, through designing supplementary sealing mechanism, supplementary sealing mechanism can follow the removal by the case and remove, and the back is accomplished in the slip casting, by case and supplementary sealing mechanism automatic re-setting, under the effect of mud pressure in the well, also can upwards jack-up bottom closing plate, makes the bottom closing plate closely laminate support plate main part bottom to further improve the leakproofness of whole device.
Drawings
FIG. 1 is a sectional view taken along line A-A of FIG. 3 according to the present invention;
FIG. 2 is a schematic view of the external structure of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a schematic view of the shut-off valve seat of the present invention;
FIG. 5 is a schematic view of the structure of the shutoff valve cartridge of the present invention;
FIG. 6 is a first perspective view of the elastic restoring mechanism of the present invention;
fig. 7 is a second view structural diagram of the elastic restoring mechanism according to the present invention.
Wherein, 1, a shell; 2. an internal thread; 3. a cut-off valve seat; 301. a valve seat body; 302. grouting holes; 303. grouting a channel; 304. a barb sealing groove; 4. a cut-off valve core; 401. sealing the base; 402. a spherical plug; 403. a valve core main body; 404. an annular plug; 5. a drainage support plate; 501. a carrier plate main body; 502. a fixed seat; 503. a drainage hole; 504. a limiting hole; 6. an elastic reset mechanism; 601. a valve core seat; 602. a valve stem; 603. a return spring; 7. an auxiliary sealing mechanism; 701. a limiting rod; 702. a bottom seal plate; 703. and a through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment is as follows:
as shown in fig. 1-3, an embodiment of the invention provides a float collar float shoe for well cementation construction, which comprises a shell 1, wherein the top of the inner wall of the shell 1 is provided with an internal thread 2, the inner wall of the shell 1 is fixedly connected with a stop valve seat 3, as shown in fig. 4, the stop valve seat 3 comprises a valve seat main body 301, the center of the valve seat main body 301 is provided with a grouting hole 302, the bottom of the grouting hole 302 is provided with a grouting channel 303, the top of the grouting channel 303 is provided with an inverted hook sealing groove 304 corresponding to the grouting hole 302, the inverted hook sealing groove 304 is in an inverted hook shape, the stop valve seat 3 is used for grouting and guiding flow of cement slurry, and when grouting is stopped, a stop valve core 4 is matched with the stop valve seat 3 to complete sealing, so as to prevent slurry from flowing backwards;
as shown in fig. 6, a drainage carrier plate 5 is fixedly connected to the bottom of the inner wall of the housing 1, the drainage carrier plate 5 includes a carrier plate main body 501, a fixing seat 502 is fixedly connected to the center of the top of the carrier plate main body 501, a plurality of drainage holes 503 and limiting holes 504 are formed on the periphery of the top of the carrier plate main body 501, cement paste entering through the stop valve seat 3 falls on the carrier plate main body 501, and then flows into the well through the plurality of drainage holes 503; the carrier plate main body 501 and the fixing seat 502 are of an integrated structure, and a circular hole is formed in the center of the top of the fixing seat 502, so that the valve rod 602 can penetrate through the carrier plate main body 501, and the normal work of the valve rod 602 is not influenced;
as shown in fig. 5, a stop valve core 4 is arranged at the center of the bottom of the stop valve seat 3, the stop valve core 4 includes a sealing base 401, a spherical plug 402 is arranged at the center of the top of the sealing base 401, a valve core main body 403 is arranged at the center of the top of the spherical plug 402, an annular plug 404 is arranged on the periphery of the top of the valve core main body 403, the center of the top of the spherical plug 402 is a hemisphere, a sealing lip is arranged on the periphery of the top, and the stop valve core 4 is used for matching with the stop valve seat 3 to complete the sealing of the grouting hole 302 and the grouting channel 303; the sealing base 401, the spherical plug 402, the valve core main body 403 and the annular plug 404 are of an integrated structure, when the stop valve core 4 is in a closed state, a hemisphere at the top of the annular plug 404 is inserted into the bottom of the grouting hole 302, and a sealing lip is inserted into the inverted hook sealing groove 304 and tightly attached to each other, when no grouting is performed, the valve core main body 403 is jacked into the grouting channel 303 by the elastic resetting mechanism 6, the inner side of the annular plug 404 is tightly attached to the inverted hook sealing groove 304 to plug the bottom end of the grouting hole 302, and the spherical plug 402 is matched with the sealing base 401 to plug the bottom end of the grouting channel 303;
as shown in fig. 6, an elastic reset mechanism 6 is installed between the stop valve core 4 and the drainage support plate 5, the elastic reset mechanism 6 includes a valve core seat 601, a valve rod 602 is fixedly connected to the center of the bottom of the valve core seat 601, a reset spring 603 is sleeved on the outer wall of the valve rod 602, when the stop valve core 4 moves downward under the pressure of cement slurry, the stop valve core 4 can downwardly extrude the reset spring 603, so that the cement slurry can enter the grouting channel 303 through the grouting holes 302 and then flow into the well through the drainage holes 503, after the grouting is completed, the pressure applied to the stop valve core 4 by the cement slurry disappears, and at this time, under the elastic action of the reset spring 603 itself, the stop valve core 4 can be jacked up, thereby realizing the sealing of the bottom of the stop valve seat 3; the bottom of the valve core seat 601 is provided with a first limiting groove, the top of the fixed seat 502 is provided with a second limiting groove, and the top end and the bottom end of the reset spring 603 are respectively sleeved between the first limiting groove and the second limiting groove, so that the reset spring 603 can be positioned and limited, and meanwhile, the reset spring 603 can be utilized to support the stop valve core 4;
as shown in fig. 7, the bottom of the stop valve core 4 is fixedly connected with an auxiliary sealing mechanism 7 corresponding to the drainage carrier plate 5, the auxiliary sealing mechanism 7 includes a plurality of limiting rods 701, the plurality of limiting rods 701 are all fixed on the periphery of the bottom of the sealing base 401 and penetrate through the corresponding limiting holes 504, the bottom ends of the plurality of limiting rods 701 are fixedly connected with a bottom sealing plate 702, a through hole 703 is formed in the center of the bottom sealing plate 702, the bottom sealing plate 702 can synchronously move along with the stop valve core 4 through the plurality of limiting rods 701, during grouting, the pressure of grouting can push the stop valve core 4 downwards to make it move downwards, meanwhile, the bottom sealing plate 702 can synchronously move downwards under the driving of the plurality of limiting rods 701, so that the bottom sealing plate 702 is separated from the carrier plate main body 501, and the plurality of drainage holes 503 are automatically opened, so that cement slurry entering between the stop valve seat 3 and the drainage 5 can be grouted through the plurality of drainage holes 503, after grouting is finished, the stop valve core 4 and the auxiliary sealing mechanism 7 are reset, and the bottom sealing plate 702 is jacked upwards under the action of slurry pressure in the well, so that the bottom sealing plate 702 is tightly attached to the bottom of the support plate main body 501, and the sealing performance of the whole device is further improved.
The working principle is as follows: when grouting is not performed, the valve core main body 403 is jacked into the grouting channel 303 by the elastic reset mechanism 6, the inner side of the annular plug 404 is tightly attached to the inverted hook sealing groove 304 to seal the bottom end of the grouting hole 302, the spherical plug 402 is matched with the sealing base 401 to seal the bottom end of the grouting channel 303, during grouting, the stop valve core 4 moves downwards under the pressure of cement slurry, the stop valve core 4 downwards extrudes the reset spring 603, so that the cement slurry can enter the grouting channel 303 through the grouting hole 302, the bottom sealing plate 702 can synchronously move downwards under the driving of the limiting rods 701, the bottom sealing plate 702 is separated from the support plate main body 501, the drainage holes 503 are automatically opened, the cement slurry entering between the stop valve seat 3 and the drainage support plate 5 can flow into the well through the drainage holes 503, after grouting is completed, the pressure applied to the stop valve core 4 disappears, at the moment, under the elastic action of the reset spring 603, can jack-up by the case 4 to the realization is to the sealed of ending disk seat 3 bottom, after case 4 and supplementary sealing mechanism 7 reset, under the effect of the mud pressure in the well, also can jack-up bottom closing plate 702, makes bottom closing plate 702 closely laminate support plate main part 501 bottom, thereby further improves the leakproofness of whole device.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A float collar float shoe for well cementation construction comprises a shell (1), wherein the top of the inner wall of the shell (1) is provided with an internal thread (2), the inner wall of the shell (1) is fixedly connected with a stop valve seat (3), and the bottom of the inner wall of the shell (1) is fixedly connected with a drainage support plate (5); the method is characterized in that: the stop valve seat (3) comprises a valve seat main body (301), a grouting hole (302) is formed in the center of the valve seat main body (301), a grouting channel (303) is formed at the bottom of the grouting hole (302), an inverted hook sealing groove (304) corresponding to the grouting hole (302) is formed in the top of the grouting channel (303), and the inverted hook sealing groove (304) is in an inverted hook shape; a stop valve core (4) is arranged at the center of the bottom of the stop valve seat (3), the stop valve core (4) comprises a sealing base (401), a spherical plug (402) is arranged at the center of the top of the sealing base (401), a valve core main body (403) is arranged at the center of the top of the spherical plug (402), an annular plug (404) is arranged on the periphery of the top of the valve core main body (403), the center of the top of the spherical plug (402) is a hemisphere, and a sealing lip is arranged on the periphery of the top; the stop valve core (4) is in an integrated structure, and when the stop valve core (4) is in a closed state, a hemisphere at the top of the annular plug (404) is inserted into the bottom of the grouting hole (302), and a sealing lip is inserted into the inverted hook sealing groove (304) and tightly attached to the bottom of the grouting hole (302); an elastic reset mechanism (6) is arranged between the stop valve core (4) and the drainage support plate (5), and an auxiliary sealing mechanism (7) corresponding to the drainage support plate (5) is fixedly connected to the bottom of the stop valve core (4).
2. The float collar float shoe for well cementation construction according to claim 1, characterized in that: drainage support plate (5) are including support plate main part (501), support plate main part (501) top center fixedly connected with fixing base (502), a plurality of drainage holes (503) and spacing hole (504) have been seted up to support plate main part (501) top week side.
3. The float collar float shoe for well cementation construction according to claim 2, characterized in that: the carrier plate main body (501) and the fixing seat (502) are of an integrated structure, and a round hole is formed in the center of the top of the fixing seat (502).
4. The float collar float shoe for well cementation construction according to claim 2, characterized in that: the elastic reset mechanism (6) comprises a valve core seat (601), a valve rod (602) is fixedly connected to the center of the bottom of the valve core seat (601), and a reset spring (603) is sleeved on the outer wall of the valve rod (602).
5. The float collar float shoe for well cementation construction according to claim 4, characterized in that: the bottom of the valve core seat (601) is provided with a first limiting groove, the top of the fixed seat (502) is provided with a second limiting groove, and the top end and the bottom end of the reset spring (603) are respectively sleeved between the first limiting groove and the second limiting groove.
6. The float collar float shoe for well cementation construction according to claim 2, characterized in that: the auxiliary sealing mechanism (7) comprises a plurality of limiting rods (701), the limiting rods (701) are fixed on the periphery of the bottom of the sealing base (401) and penetrate through corresponding limiting holes (504), a plurality of bottom sealing plates (702) are fixedly connected to the bottom ends of the limiting rods (701), and through holes (703) are formed in the centers of the bottoms of the bottom sealing plates (702).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210956972.2A CN115030668B (en) | 2022-08-10 | 2022-08-10 | Float collar float shoe for well cementation construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210956972.2A CN115030668B (en) | 2022-08-10 | 2022-08-10 | Float collar float shoe for well cementation construction |
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| Publication Number | Publication Date |
|---|---|
| CN115030668A true CN115030668A (en) | 2022-09-09 |
| CN115030668B CN115030668B (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210956972.2A Active CN115030668B (en) | 2022-08-10 | 2022-08-10 | Float collar float shoe for well cementation construction |
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| Country | Link |
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| CN (1) | CN115030668B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115977581A (en) * | 2023-03-20 | 2023-04-18 | 山东健源石油工程技术有限公司 | Automatic grouting floating shoe device for oil well construction and pouring method |
| CN116517500A (en) * | 2023-07-03 | 2023-08-01 | 胜利油田渤海固井工程技术有限责任公司 | Float collar float shoe with multiple sealing functions for well cementation construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4171019A (en) * | 1978-01-12 | 1979-10-16 | Davis-Lynch, Inc. | Apparatus and method for re-entering and cementing an underwater well |
| CN204511369U (en) * | 2015-03-11 | 2015-07-29 | 河北上善石油机械有限公司 | A kind of float collar of double seal system |
| CN206972195U (en) * | 2017-07-28 | 2018-02-06 | 中国石油集团渤海钻探工程有限公司 | A kind of efficient sealed float collar float plug of double acting |
| CN216841556U (en) * | 2022-01-21 | 2022-06-28 | 大庆市璞庆钻采设备制造有限公司 | Float collar and float shoe with high sealing performance |
| CN216894327U (en) * | 2022-01-20 | 2022-07-05 | 大庆市璞庆钻采设备制造有限公司 | Movable float collar and float shoe |
-
2022
- 2022-08-10 CN CN202210956972.2A patent/CN115030668B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4171019A (en) * | 1978-01-12 | 1979-10-16 | Davis-Lynch, Inc. | Apparatus and method for re-entering and cementing an underwater well |
| CN204511369U (en) * | 2015-03-11 | 2015-07-29 | 河北上善石油机械有限公司 | A kind of float collar of double seal system |
| CN206972195U (en) * | 2017-07-28 | 2018-02-06 | 中国石油集团渤海钻探工程有限公司 | A kind of efficient sealed float collar float plug of double acting |
| CN216894327U (en) * | 2022-01-20 | 2022-07-05 | 大庆市璞庆钻采设备制造有限公司 | Movable float collar and float shoe |
| CN216841556U (en) * | 2022-01-21 | 2022-06-28 | 大庆市璞庆钻采设备制造有限公司 | Float collar and float shoe with high sealing performance |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115977581A (en) * | 2023-03-20 | 2023-04-18 | 山东健源石油工程技术有限公司 | Automatic grouting floating shoe device for oil well construction and pouring method |
| CN116517500A (en) * | 2023-07-03 | 2023-08-01 | 胜利油田渤海固井工程技术有限责任公司 | Float collar float shoe with multiple sealing functions for well cementation construction |
| CN116517500B (en) * | 2023-07-03 | 2023-08-25 | 胜利油田渤海固井工程技术有限责任公司 | Float collar float shoe with multiple sealing functions for well cementation construction |
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| Publication number | Publication date |
|---|---|
| CN115030668B (en) | 2022-11-15 |
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