CN2377347Y - Self-filling type floating collar and float shoe - Google Patents
Self-filling type floating collar and float shoe Download PDFInfo
- Publication number
- CN2377347Y CN2377347Y CN 99206822 CN99206822U CN2377347Y CN 2377347 Y CN2377347 Y CN 2377347Y CN 99206822 CN99206822 CN 99206822 CN 99206822 U CN99206822 U CN 99206822U CN 2377347 Y CN2377347 Y CN 2377347Y
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- hole
- valve
- valve body
- spool
- plasma discharge
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses self-filling type floating collars and floating shoes, which are suitable for a well cementing of an oil well drilling cannula to prevent slurry at a well bottom form counter flowing. The barrel bodies of the self-filling type floating collars and floating shoes are provided with hollow holes, and the upper parts of the hollow holes of the barrel bodies are provided with upper valve bodies. The lower parts of the hollow holes of the barrel bodies are provided with lower valve bodies, and the upper valve bodies and the lower valve bodies are all provided with the hollow holes. Valve core restoring springs which are arranged on the valve rods of the lower parts of valve cores are arranged in the hollow holes of the lower valve bodies. The valve heads of the upper parts of the valve cores are provided with a section of conical surface, and the lower parts of the hollow holes of the upper valve bodies are provided with a section of opposite conical surface with a small upper part and a large lower part. Two conical surfaces are correspondingly matched, self-filling pellets are arranged between the two conical surfaces, which causes gaps arranged between the two conical surfaces to form a slurry draining channel. The utility model has the advantages of simple structure, high safety, convenient operation, labor saving, time saving and high work efficiency.
Description
The utility model relates to the float collar float shoe device that a kind of oil drilling casing cementing is used.
In the operation of oil drilling casing cementing,, usually use float collar float shoe device for preventing bottom-up the blowing back in the sleeve pipe of back shaft bottom cement paste of cementing the well.But because existing float collar float shoe device, in setting of casing, can only be in closed condition, make sleeve pipe enter well depth to a certain degree the time, outside of sleeve pressure increases to the unbalanced state of external and internal pressure, thereby cause sleeve pipe to be squeezed flat distortion, even damage, influence normal operation.For guaranteeing the safe construction normal operation, prevent the generation of this phenomenon and accident, adopt the method for in sleeve pipe, injecting mud from well head usually, so that the sleeve pipe internal and external pressure balance, but this method complicated operation trouble, and time-consuming, work efficiency is low, well cementation cost height.
Task of the present utility model is: a kind of novel float collar float shoe device is provided, and guaranteeing the safe and reliable of casing cementing operation, and easy and simple to handle, the work efficiency height.
For finishing above-mentioned task, the technical solution of the utility model is as follows:
A kind of self filling type float collar float shoe is by the cylindrical shell of through hole in being shaped on be contained in the cylindrical shell back pressure formula one way valve in the through hole and form.The upper and lower part of cylindrical shell is shaped on gas thread respectively, to be connected with sleeve pipe up and down.The upper valve body of back pressure formula one way valve and following valve body all are shaped on middle through hole.Upper valve body is contained in the top of through hole in the cylindrical shell, and following valve body is contained in the bottom of through hole in the cylindrical shell.Spool is contained in down in the valve body in the through hole.Valve core reseting spring is contained on the valve rod of spool bottom, and the spool that valve core reseting spring is housed is contained in down in the valve body in the through hole, one section conical surface of system on the top valve head of spool.The through hole bottom is shaped on one section up-small and down-big inverted cone surface in the upper valve body.The corresponding cooperation of two conical surfaces.Be equipped with between two conical surfaces from irritating bead, so that the space between two conical surfaces becomes the plasma discharge passage.When setting of casing, because from the effect of irritating bead, make the back pressure formula one way valve of this device be in opening state, thereby shaft bottom mud can enter valve body by following plasma discharge hole, valve body bottom, from bottom to top through the plasma discharge passage between two conical surfaces, in the upper valve body in through hole, the cylindrical shell through hole enter sleeve pipe, circulate, guarantee the sleeve pipe internal and external pressure balance, operation is normally carried out.When injecting cementing slurry from top to bottom, downward pressure makes valve core reseting spring be compressed downwards, cement paste enters through hole in the upper valve body by through hole in sleeve pipe, the cylindrical shell, dash from irritating bead by plasma discharge passage between two conical surfaces then, enter down the cavity between through hole in valve body and the cylindrical shell, plasma discharge hole by following valve body bottom enters through hole in the cylindrical shell bottom, enters sleeve pipe then.After stopping to inject cement paste, the upwards reaction of shaft bottom slurry and the elastic force of valve core reseting spring make to move to two conical surface close proximity on the spool, have turn-offed the plasma discharge passage.Thereby stoped cement paste upwards to flow backwards.
The lower end of following valve body is shaped on the plasma discharge through hole.Spool top valve head reaches down, and the valve body bottom is beneficial to flowing of slurry to leave the space in top and the cylindrical shell between through-hole wall.
Through hole coaxial line in upper and lower valve body, spool and the cylindrical shell of this float collar float shoe.
One section straight cylinder also can be made in the upper valve nose cone face top of spool, leaves gap movingly between the middle through hole of this straight cylinder and upper valve body.Spool upper valve centriciput is shaped on only in plasma discharge hole, the top of upper end open, to communicate with the middle through hole of upper valve body along axial line.The bottom in this plasma discharge hole, top is connected with bottom, side plasma discharge hole in the spool head, and formed plasma discharge passage is connected between the upside openend in side plasma discharge hole and spool upper valve nose cone face and upper valve body inverted cone surface.The upper end open place in the plasma discharge hole, top of spool top valve head is provided with valve ball, and the slightly larger in diameter of valve ball is in the diameter in plasma discharge hole, top.When setting of casing, shaft bottom mud can be via the plasma discharge passage between two conical surfaces, and approaching side plasma discharge hole via plasma discharge hole, top, is washed valve ball open then, and through hole enters sleeve pipe in upper valve body, during with the assurance setting of casing, and sleeve pipe internal and external pressure balance, safety work.When needs injected cement slurry cementing, cement paste injected from sleeve pipe top, and valve ball resets, and has sealed plasma discharge hole, top.The pressure of cement paste makes spool compression valve core reseting spring and moves down.When moving down into certain position, from irritating the bead landing, the above straight cylinder through hole from upper valve body of spool upper valve nose cone face shifts out, cement paste is entered by plasma discharge passage between spool upper valve nose cone face and upper valve body inverted cone surface and following valve body lower end plasma discharge hole by through hole in the upper valve body and enters down parts casing pipe, shaft bottom, enters then between the outside of sleeve and the borehole wall and cements the well.When well cementing operation was finished, cement paste stopped to inject, and upper pressure reduces.Because from irritating bead landing, cement paste the make progress effect of increased pressure and valve core reseting spring elastic force in shaft bottom makes and moves on the spool, closely contacts up to two conical surfaces, has sealed the upwards passage of refluence of shaft bottom cement paste.Prevented the refluence of cement paste.
The utlity model has following advantage and effect.
1, safe and reliable, shaft bottom mud can enter sleeve pipe from bottom to top in the time of can guaranteeing setting of casing, guarantees the sleeve pipe internal and external pressure balance, safety work; Can inject cementing slurry from top to bottom again, assurance well cementing operation safety is carried out.Simultaneously, because when from up to down injecting cement paste, the bead of filling certainly in this float collar float shoe device spool upper valve nose cone face and the upper valve body between the inverted cone surface of through hole bottom is dashed falls into sleeve pipe, after well cementing operation is finished, cementing concrete stops annotating, the shaft bottom cement paste upwards pressure and the elastic force of valve core reseting spring, promotes spool and upwards moves to two conical surfaces and closely contact, and has turn-offed the plasma discharge passage.Thereby having guaranteed that the shaft bottom cement paste can not flow backwards enters sleeve pipe, and entire job is safe and reliable.
2, simple in structure, be convenient to make and install, be easy to promote.
3, since the back pressure formula one way valve of this device close and open-minded, rely on the variation of slurry pressure in operation process in the pipe fully, and carry out automatically, saved the trouble of using existing apparatus and must in sleeve pipe, injecting mud, thereby it is easy and simple to handle, the saving of labor, save time, the work efficiency height, the well cementation cost low.
Below in conjunction with drawings and Examples the utility model is described in further details.
Fig. 1 embodiment 1 structural representation
Fig. 2 embodiment 2 structural representations
Embodiment 1
The cylindrical shell (1) of this self filling type float collar float shoe is shaped on middle through hole, and its upper and lower side is shaped on gas thread respectively, so that it is connected with sleeve pipe.The upper valve body (2) of through hole top installing back pressure formula one way valve in the cylindrical shell (1), through hole and two fixing certainly irritate bead pin-and-holes parallel during upper valve body (2) is shaped on axis.The through hole bottom is shaped on one section up-small and down-big inverted cone surface (10) in the upper valve body (2).The following valve body (4) of back pressure formula one way valve is shaped on middle through hole, and is contained in the bottom of through hole in the cylindrical shell (1), and the lower end of following valve body (4) is shaped on plasma discharge hole (11).The bottom valve rod of the spool (3) of back pressure formula one way valve is equipped with valve core reseting spring (5), is contained in down then in the middle through hole of valve body (4).The top of spool (3) top core print is shaped on one section conical surface (9).The conical surface (9) and the corresponding cooperation of inverted cone surface (10).Pack into from fixing on upper valve body (2) from irritating bead (6), use steady pin (7) that it is fixed between two conical surfaces (9), (10) then, make the space of leaving between two conical surfaces (9), (10) become plasma discharge passage (8) from irritating the bead pin-and-hole.Following valve body (4) bottom is to leave the space between through-hole wall in top, spool (3) top valve head and the cylindrical shell (1), form the plasma discharge chamber, communicate with through hole top and the bottom in middle through hole of upper valve body (2) and the cylindrical shell (1) respectively by plasma discharge passage (8), plasma discharge hole (11).Through hole coaxial line in the middle through hole of through hole and upper valve body (2), spool (3), the following valve body (4) in the cylindrical shell (1).When setting of casing, back pressure formula one way valve is opened, and shaft bottom mud enters down the valve body bottom with formed plasma discharge chamber between through-hole wall top and spool top valve head and the cylindrical shell from the following plasma discharge hole, lower end (11) of valve body (4).Then, enter the middle through hole of upper valve body (2) by the plasma discharge passage (8) between two conical surfaces (9) of irritating bead (6) place certainly, (10), and then through hole enters sleeve pipe in cylindrical shell (1) top, the beginning mud circulation.So that the sleeve pipe internal and external pressure balance, assurance casing job safety is carried out.When injecting cementing concrete, top-down cement paste pressure promotes spool (3) and moves down, and irritates bead (6) landing certainly, and this valve was still and opened this moment, and cement paste injects from top to bottom, and well cementing operation is normally carried out.When well cementing operation is finished, stop to inject cement paste.Because the shaft bottom cement paste upwards pressure and the elastic force of valve core reseting spring (5), make and move on the spool (3), through hole bottom inverted cone surface (10) closely contacts in spool upper valve nose cone face (9) and upper valve body (2), turn-offed plasma discharge passage (8), thereby turn-offed the back pressure formula one way valve of this device, prevented the refluence from bottom to top of shaft bottom cement paste.
Compare with embodiment 1, the assembly relation and the embodiment 1 of the upper and lower valve body (2) of present embodiment, (4) and spool (3), valve core reseting spring (5) are identical.The lower end of following valve body (4) still is shaped on plasma discharge hole (11), and upper valve body (2) is not provided with from irritating the bead dowel hole.Through hole bottom and spool (3) top valve head respectively are shaped on one section corresponding conical surface (10), (9) in the upper valve body (2), still place from irritating bead (6) between two conical surfaces (9), (10).Spool (3) upper core nose cone face (9) is shaped on one section straight cylinder (13) with top, leaves gap movingly between through hole in this straight cylinder (13) and the upper valve body (2).Spool (3) upper valve centriciput only is shaped in plasma discharge hole, the top of upper end open (14) along axis, communicates with the middle through hole with upper valve body (2).The bottom in plasma discharge hole, top (14) is connected with the bottom in side plasma discharge hole (7) in the valve head of spool top.The upside openend in side plasma discharge hole (7) is connected with plasma discharge passage (8) between two conical surfaces (9), (10).The upper end open place in the plasma discharge hole, top (14) of spool (3) top valve head is provided with valve ball (12).The slightly larger in diameter of valve ball (12) is in the diameter in plasma discharge hole, top (14).When setting of casing, shaft bottom mud is entered in this device by following plasma discharge hole, valve body (4) bottom (11).Because upwarding pressure, mud makes that irritating bead (6) certainly is squeezed between two conical surfaces tightly by two conical surfaces (9) (10), plasma discharge passage (8) is opened, mud enters plasma discharge hole, top (14) through side plasma discharge hole (7) from bottom to top, washes away valve ball (12), makes that this back pressure one way valve is open-minded.Mud can enter the sleeve pipe circulation, makes to guarantee normal operation by the sleeve pipe internal and external pressure balance.When well cementation, cement paste enters through hole in the upper valve body (2) from top to bottom, valve ball (13) has been blocked plasma discharge hole, top (14) upper end open, this back pressure formula one way valve is closed at this moment, the cement paste downward pressure increases, and promotes spool (3) and moves down, and the space between two conical surfaces (9) (10) increases, from irritating bead (6) landing, leave the plasma discharge passage (8) between two conical surfaces (9) (10).Straight cylinder (3) through hole from upper valve body (2) of spool (3) top core print shifts out simultaneously, and this one way valve is open-minded.Cement paste is unimpeded from top to bottom, and well cementing operation is normally carried out.After well cementing operation was finished, cement paste stopped to inject.The elastic force of the upward pressure of shaft bottom cement paste and valve core reseting spring (5) makes spool (3) move up, and until closely contact of two conical surfaces (9) (10), has closed this one way valve, thereby has prevented cement paste refluence from bottom to top reliably.
Claims (4)
1, a kind of self filling type float collar float shoe, the cylindrical shell 1 that comprises through hole in being shaped on, it is characterized in that, be provided with back pressure formula one way valve in the cylindrical shell 1 in the through hole, back pressure formula one way valve is mainly by the upper valve body 2 and the following valve body 4 of through hole in being shaped on and be contained in down the spool in the through hole 3 in the valve body 4, valve core reseting spring 5 is formed, upper valve body 2 is contained in the top of through hole in the cylindrical shell 1, following valve body 4 is contained in the bottom of through hole in the cylindrical shell 1, valve core reseting spring 5 is contained on the spool 3 bottom valve rods, the spool 3 bottom valve rods that valve core reseting spring 5 is housed are contained in down in the middle through hole of valve body 4, be shaped on one section conical surface 9 on the top valve head of spool 3, the through hole bottom is shaped on one section up-small and down-big inverted cone surface 10 in the upper valve body 2, inverted cone surface 10 and the 9 corresponding cooperations of spool 3 upper valve nose cone faces, the conical surface 9,10 are equipped with from irritating bead 6, so that two conical surfaces 9,10 space becomes plasma discharge passage 8.
2, float collar float shoe according to claim 1 is characterized in that the lower end of valve body 4 is shaped on plasma discharge through hole 11 down, and the bottom of valve body 4 was beneficial to flowing of slurry to leave the space in top and the cylindrical shell 1 between through-hole wall under spool 3 top valve heads reached.
3, float collar float shoe according to claim 1 and 2 is characterized in that through hole coaxial line in upper and lower valve body 2,4, spool 3 and the cylindrical shell 1.
4, according to claim 1 or 2 or 3 described float collar float shoes, it is characterized in that, one section straight cylinder 13 also can be made in spool 3 upper valve nose cone faces 9 tops, leave gap movingly between the middle through hole of this straight cylinder 13 and upper valve body 2, spool 3 upper valve centriciputs are shaped on only in plasma discharge hole, the top of upper end open 14 along axial line, to communicate with the middle through hole of upper valve body 2, the bottom in plasma discharge hole, top 14 is connected with the bottom in side plasma discharge hole 7 in the spool head, the upside openend in side plasma discharge hole 7 and bidimensional face 9,10 plasma discharge passage 8 is connected, the upper end open place in the plasma discharge hole, top 14 of spool top valve head is provided with valve ball 12, and the slightly larger in diameter of valve ball 12 is in the diameter in plasma discharge hole, top 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99206822 CN2377347Y (en) | 1999-04-02 | 1999-04-02 | Self-filling type floating collar and float shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99206822 CN2377347Y (en) | 1999-04-02 | 1999-04-02 | Self-filling type floating collar and float shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2377347Y true CN2377347Y (en) | 2000-05-10 |
Family
ID=34000992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99206822 Expired - Fee Related CN2377347Y (en) | 1999-04-02 | 1999-04-02 | Self-filling type floating collar and float shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2377347Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628346A (en) * | 2012-05-09 | 2012-08-08 | 常熟市石油固井工具有限公司 | Self-filling type flow velocity-regulable float collar-float shoe device |
| CN106401528A (en) * | 2016-12-15 | 2017-02-15 | 成都市卓新实业有限公司 | Grouting method for drilling rod |
| CN108868651A (en) * | 2017-05-08 | 2018-11-23 | 中国石油化工股份有限公司 | A kind of completion tubular column |
| CN112360389A (en) * | 2020-11-10 | 2021-02-12 | 江苏油田矿业开发有限公司 | Small workover operation method for casing leakage plugging |
-
1999
- 1999-04-02 CN CN 99206822 patent/CN2377347Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628346A (en) * | 2012-05-09 | 2012-08-08 | 常熟市石油固井工具有限公司 | Self-filling type flow velocity-regulable float collar-float shoe device |
| CN106401528A (en) * | 2016-12-15 | 2017-02-15 | 成都市卓新实业有限公司 | Grouting method for drilling rod |
| CN106401528B (en) * | 2016-12-15 | 2019-05-21 | 成都市卓新实业有限公司 | A kind of drilling rod grouting method |
| CN108868651A (en) * | 2017-05-08 | 2018-11-23 | 中国石油化工股份有限公司 | A kind of completion tubular column |
| CN112360389A (en) * | 2020-11-10 | 2021-02-12 | 江苏油田矿业开发有限公司 | Small workover operation method for casing leakage plugging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |