CN107859485A - Rotate freely float shoe assembly - Google Patents
Rotate freely float shoe assembly Download PDFInfo
- Publication number
- CN107859485A CN107859485A CN201711167155.4A CN201711167155A CN107859485A CN 107859485 A CN107859485 A CN 107859485A CN 201711167155 A CN201711167155 A CN 201711167155A CN 107859485 A CN107859485 A CN 107859485A
- Authority
- CN
- China
- Prior art keywords
- hole
- ratchet
- swivel head
- mounting groove
- orifice plate
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The present invention relates to float shoe technical field, is that one kind rotates freely float shoe assembly；It includes body, floating core, ratchet set, swivel head；The lateral surface of swivel head bottom side is inclined-plane wide at the top and narrow at the bottom, body is cylindrical in shape, up-hole plate is installed with the inside middle portion of body, upper liquid flow hole is provided with the middle part of up-hole plate, orifice plate is installed with the lower inside of body, mounting hole is provided with the middle part of orifice plate, at least one lower liquid flow hole is provided with the periphery of orifice plate, the bottom for floating core is arranged in the mounting hole of orifice plate.Reasonable and compact in structure of the present invention, it is easy to use, pass through being used cooperatively for body, floating core, ratchet set and swivel head, realize that bunch tube smoothly enters the purpose of well, with it is safe and reliable the characteristics of, facilitate operation, improve ability of the bunch tube by complicated well section, man-hour and cost have been saved, setting of casing has been greatly reduced and is hampered and the risk of cutting ferrule pipe.
Description
Technical field
The present invention relates to float shoe technical field, is that one kind rotates freely float shoe assembly.
Background technology
During oil gas field cements the well setting of casing, when occurring necking down, step, borehole uncleanness situation in well, in general
Hemispherical guide shoe, because contact area is big, frictional force is big, causes bunch tube to be difficult to normally enter well, and current technology measure needs
Pressue device pressurization just can make pipe string smoothly enter well, the situation of cutting ferrule pipe may be caused when serious, this will have a strong impact on that well cementation is applied
Work.
The content of the invention
The invention provides one kind to rotate freely float shoe assembly, overcomes the deficiency of above-mentioned prior art, and it can effectively be solved
Certainly existing apparatus causes bunch tube to be difficult to normally to enter the easy situation for causing cutting ferrule pipe of well, the problem of having a strong impact on cementing operation.
The technical scheme is that realized by following measures：One kind rotates freely float shoe assembly, including body,
Floating core, ratchet set, swivel head；The lateral surface of swivel head bottom side is inclined-plane wide at the top and narrow at the bottom, and body is cylindrical in shape, in body
Inside middle portion is installed with up-hole plate, and upper liquid flow hole is provided with the middle part of up-hole plate, is fixedly mounted in the lower inside of body
There is orifice plate, mounting hole is provided with the middle part of orifice plate, at least one lower liquid flow hole is provided with the periphery of orifice plate, float core
Bottom is arranged in the mounting hole of orifice plate, and the compression spring in compression shape is provided with the middle part of floating core, and the top of floating core leads to
Overcompression spring compression is simultaneously got lodged on the upper liquid flow hole of up-hole plate, and step, ratchet are provided with the inside of the body below orifice plate
Seat is provided with ratchet mounting groove, the lower end peace of ratchet set on the step of body in the inside middle portion of swivel head on the outside of the upper end of set
In ratchet mounting groove, the top of swivel head is sleeved on the lower outside of body, the bottom of swivel head vertically be provided with
The lower liquid hole that the upper lumen of swivel head communicates.
Here is the further optimization and/or improvements to foregoing invention technical scheme：
It is above-mentioned to be provided with chuck on the outside of the upper end of ratchet set, ratchet is uniformly fixed with the lower end of ratchet set, in the lower end of ratchet
Outside is integrally fixed with pawl platform, and for the chuck seat of ratchet set on the step of body, the pawl platform of ratchet set is arranged on ratchet mounting groove
It is interior.
Above-mentioned floating core includes floating stem and floating core print；The upper end of floating stem and the lower end of floating core print are integrally fixed together,
The external diameter of floating core print is more than the external diameter of floating stem, and the upper surface of floating core print is arcwall face or semicircle sphere, under upper liquid flow hole
Portion is up-small and down-big bellmouth orifice；The bottom of floating stem is arranged in the mounting hole of orifice plate, at the middle part and top of floating stem
Outside is provided with the compression spring in compression shape, and the upper surface of floating core print is compressed by compression spring and gets lodged in the upper liquid of up-hole plate
On discharge orifice.
The above-mentioned inside middle portion in body is provided with upper mounting groove, and the outer rim of up-hole plate is fixedly mounted in mounting groove；Or/
With the outer rim of up-hole plate is threadably secured in upper mounting groove.
The above-mentioned lower inside in body is provided with lower mounting groove, jump ring is installed with lower mounting groove, orifice plate leads to
The upper end for crossing ratchet set is pressed on the lower surface of jump ring.
It is above-mentioned to be provided with external screw thread or internal thread on the top of body；Or/and four lower liquid are evenly equipped with the periphery of orifice plate
Discharge orifice；Or/and swivel head mounting groove is provided with the lower outside of body, the top of swivel head is sleeved in swivel head mounting groove；
Or/and sealing ring is installed between up-hole plate and body.
Reasonable and compact in structure of the present invention, it is easy to use, by body, being used cooperatively for core, ratchet set and swivel head is floated,
Realize that bunch tube smoothly enters the purpose of well, there is the characteristics of safe and reliable, facilitate operation, improve bunch tube and pass through Holes of Complicated Wells
The ability of section, has saved man-hour and cost, greatly reduces setting of casing and is hampered and the risk of cutting ferrule pipe.
Brief description of the drawings
Accompanying drawing 1 is the main view cross section structure diagram of preferred embodiment.
Accompanying drawing 2 is the cross section structure diagram at A-A in accompanying drawing 1.
The broken section mplifying structure schematic diagram that accompanying drawing 3 covers for ratchet in the present invention.
Coding in accompanying drawing is respectively：1 is body, and 2 be floating core, and 3 be ratchet set, and 4 be swivel head, and 5 be up-hole plate, and 6 are
Upper liquid flow hole, 7 be orifice plate, and 8 be mounting hole, and 9 be lower liquid flow hole, and 10 be compression spring, and 11 be step, and 12 be that ratchet is installed
Groove, 13 be lower liquid hole, and 14 be chuck, and 15 be ratchet, and 16 be pawl platform, and 17 be floating stem, and 18 be floating core print, and 19 be jump ring, and 20 are
Swivel head mounting groove.
Embodiment
The present invention is not limited by following embodiments, can technique according to the invention scheme and actual conditions it is specific to determine
Embodiment.
In the present invention, for the ease of description, the description of the relative position relation of each part is according to Figure of description 1
Butut mode be described, such as：The position relationship of forward and backward, upper and lower, left and right etc. is the cloth according to Figure of description 1
Figure direction determines.
With reference to embodiment and accompanying drawing, the invention will be further described：
As shown in accompanying drawing 1,2,3, this, which rotates freely float shoe assembly, includes body 1, floating core 2, ratchet set 3, swivel head 4；Swivel head 4
The lateral surface of bottom side is inclined-plane wide at the top and narrow at the bottom, and body 1 is cylindrical in shape, and hole is installed with the inside middle portion of body 1
Plate 5, upper liquid flow hole 6 is provided with the middle part of up-hole plate 5, orifice plate 7 is installed with the lower inside of body 1, in orifice plate 7
Middle part be provided with mounting hole 8, be provided with least one lower liquid flow hole 9 in the periphery of orifice plate 7, the bottom of floating core 2 is arranged on down
In the mounting hole 8 of orifice plate 7, the compression spring 10 in compression shape is installed at the middle part of floating core 2, the top of floating core 2 passes through compression
Spring 10 is compressed and got lodged on the upper liquid flow hole 6 of up-hole plate 5, and step 11, spine are provided with positioned at the inner side of body 1 of the lower section of orifice plate 7
Seat is provided with ratchet mounting groove 12, ratchet set on the step 11 of body 1 in the inside middle portion of swivel head 4 on the outside of the upper end of pawl set 3
3 lower end is arranged in ratchet mounting groove 12, and the top of swivel head 4 is sleeved on the lower outside of body 1, under swivel head 4
Portion is provided with the lower liquid hole 13 communicated with the upper lumen of swivel head 4 vertically.So, when occurring necking down, step, well in well not
During cleaning situation, due to the airflow design at swivel head 4, the present invention and the contact area of the borehole wall, passing through property are greatly reduced
It is greatly improved, simultaneously because the activity connection of swivel head 4, can be such that swivel head 4 is rotated when meeting with obstruction thing and pass through, it is right
The well that smoothly enters of bunch tube is very helpful；By being used cooperatively for body 1, floating core 2, ratchet set 3 and swivel head 4, realize
Bunch tube smoothly enters the purpose of well, has the characteristics of safe and reliable, facilitates operation, improve bunch tube and pass through complicated well section
Ability, man-hour and cost are saved, greatly reduced setting of casing and be hampered and the risk of cutting ferrule pipe.
The above-mentioned float shoe assembly that rotates freely can be made further optimization and/or improvements according to being actually needed：
As shown in accompanying drawing 1,3, chuck 14 is provided with the outside of the upper end of ratchet set 3, ratchet is uniformly fixed with the lower end of ratchet set 3
15, pawl platform 16 is integrally fixed with the lower end outside of ratchet 15, the chuck 14 of ratchet set 3 is on the step 11 of body 1, ratchet
The pawl platform 16 of set 3 is arranged in ratchet mounting groove 12.So, it is easy to the chuck 14 of ratchet set 3 on the step 11 of body 1,
The pawl platform 16 of ratchet set 3 is arranged in ratchet mounting groove 12.
As shown in Figure 1, floating core 2 includes floating stem 17 and floating core print 18；Under the upper end and floating core print 18 of floating stem 17
End is integrally fixed together, and the external diameter for floating core print 18 is more than the external diameter of floating stem 17, float the upper surface of core print 18 for arcwall face or
Semicircle sphere, the bottom of upper liquid flow hole 6 is up-small and down-big bellmouth orifice；The bottom of floating stem 17 is arranged on the peace of orifice plate 7
Fill in hole 8, the compression spring 10 in compression shape is installed at the middle part of floating stem 17 and upper outside, floats the upper surface of core print 18
Compress and get lodged on the upper liquid flow hole 6 of up-hole plate 5 by compression spring 10.So, core print 18 is floated to be easy to preferably block and close
Seal liquid flow hole 6.
As shown in Figure 1, upper mounting groove is provided with the inside middle portion of body 1, the outer rim of up-hole plate 5 is fixedly mounted on peace
In tankage；Or/and the outer rim of up-hole plate 5 is threadably secured in upper mounting groove.So, upper mounting groove is easy to upper hole
The installation of plate 5.
As shown in Figure 1, lower mounting groove is provided with the lower inside of body 1, jump ring is installed with lower mounting groove
19, orifice plate 7 is pressed on the lower surface of jump ring 19 by the upper end of ratchet set 3.So, lower mounting groove is easy to the peace of jump ring 19
Dress, plays the position-limiting action to orifice plate 7.
As shown in accompanying drawing 1,2,3, external screw thread or internal thread are provided with the top of body 1；Or/and in the periphery of orifice plate 7
It is evenly equipped with four lower liquid flow holes 9；Or/and it is provided with swivel head mounting groove 20, the top set of swivel head 4 in the lower outside of body 1
In swivel head mounting groove 20；Or/and sealing ring is installed between up-hole plate 5 and body 1.So, it is outer on body 1
Screw thread or internal thread are easily installed and dismantled；Four lower liquid flow holes 9 on orifice plate 7 are easy to preferably descend liquid；Swivel head 4 it is upper
In portion's suit swivel head mounting groove 20, it is easy to when occurring necking down, step, borehole uncleanness situation in well, due to swivel head 4
Activity connection, can be such that swivel head 4 is rotated when meeting with obstruction thing and pass through, and the well that smoothly enters of bunch tube is very helpful；It is close
Seal can play better seal effect.
Above technical characteristic constitutes highly preferred embodiment of the present invention, and there is stronger adaptability and optimal implementation to imitate for it
Fruit, can be according to the non-essential technical characteristic of increase and decrease be actually needed, to meet the needs of different situations.
The use process of preferred embodiment：During work, the present invention is connected on bunch tube, cemented the well in oil gas field
During setting of casing, when occurring necking down, step, borehole uncleanness situation in well, due to streamlined the setting of the bottom of swivel head 4
Meter, the present invention and the contact area of the borehole wall are greatly reduced, is greatly improved by property, simultaneously because the work of swivel head 4
Property connection, swivel head 4 can be made rotate when meeting with obstruction thing and passed through, to bunch tube it is smooth enter well be very helpful.
Claims (9)
1. one kind rotates freely float shoe assembly, it is characterised in that including body, floating core, ratchet set, swivel head；Swivel head bottom one
The lateral surface of side is inclined-plane wide at the top and narrow at the bottom, and body is cylindrical in shape, and up-hole plate is installed with the inside middle portion of body, in upper hole
The middle part of plate is provided with upper liquid flow hole, and orifice plate is installed with the lower inside of body, and installation is provided with the middle part of orifice plate
Hole, at least one lower liquid flow hole is provided with the periphery of orifice plate, the bottom for floating core is arranged in the mounting hole of orifice plate, floating
Compression spring in compression shape is installed, the top of floating core is compressed by compression spring and gets lodged in the upper liquid of up-hole plate in the middle part of core
On discharge orifice, step is provided with the inside of the body below orifice plate, seat is revolving on the step of body on the outside of the upper end of ratchet set
The inside middle portion of rotary head is provided with ratchet mounting groove, and the lower end of ratchet set is arranged in ratchet mounting groove, the top suit of swivel head
In the lower outside of body, the lower liquid hole communicated with the upper lumen of swivel head is provided with vertically in the bottom of swivel head.
2. according to claim 1 rotate freely float shoe assembly, it is characterised in that chuck is provided with the outside of the upper end of ratchet set,
Ratchet is uniformly fixed with the lower end of ratchet set, is integrally fixed with pawl platform in the lower end outside of ratchet, the chuck seat of ratchet set exists
On the step of body, the pawl platform of ratchet set is arranged in ratchet mounting groove.
3. according to claim 1 or 2 rotate freely float shoe assembly, it is characterised in that floating core includes floating stem and floating core
Head；The upper end of floating stem and the lower end of floating core print are integrally fixed together, and the external diameter for floating core print is more than the external diameter of floating stem, floats core
The upper surface of head is arcwall face or semicircle sphere, and the bottom of upper liquid flow hole is up-small and down-big bellmouth orifice；The bottom of floating stem
In the mounting hole of orifice plate, the compression spring in compression shape is installed at the middle part of floating stem and upper outside, floats core
The upper surface of head is compressed and got lodged on the upper liquid flow hole of up-hole plate by compression spring.
4. according to claim 1 or 2 rotate freely float shoe assembly, it is characterised in that the inside middle portion of body is provided with upper peace
Tankage, the outer rim of up-hole plate are fixedly mounted in mounting groove；Or/and the outer rim of up-hole plate is threadably secured installed in upper
In mounting groove.
5. according to claim 3 rotate freely float shoe assembly, it is characterised in that the inside middle portion of body is provided with upper installation
Groove, the outer rim of up-hole plate are fixedly mounted in mounting groove；Or/and the outer rim of up-hole plate is threadably secured installed in upper peace
In tankage.
6. rotate freely float shoe assembly according to claim 1 or 2 or 5, it is characterised in that the lower inside of body is provided with
Lower mounting groove, is installed with jump ring in lower mounting groove, and the upper end that orifice plate is covered by ratchet is pressed on the lower surface of jump ring
On.
7. rotate freely float shoe assembly according to claim 3 or 4, it is characterised in that the lower inside of body is provided with lower peace
Tankage, is installed with jump ring in lower mounting groove, and the upper end that orifice plate is covered by ratchet is pressed on the lower surface of jump ring.
8. rotate freely float shoe assembly according to claim 1 or 2 or 5, it is characterised in that the top of body is provided with outer spiral shell
Line or internal thread；Or/and four lower liquid flow holes are evenly equipped with the periphery of orifice plate；Or/and it is provided with the lower outside of body
Swivel head mounting groove, the top of swivel head are sleeved in swivel head mounting groove；Or/and it is provided between up-hole plate and body
Sealing ring.
9. rotate freely float shoe assembly according to claim 3 or 4 or 6 or 7, it is characterised in that the top of body is provided with outer
Screw thread or internal thread；Or/and four lower liquid flow holes are evenly equipped with the periphery of orifice plate；Or/and set in the lower outside of body
There is swivel head mounting groove, the top of swivel head is sleeved in swivel head mounting groove；Or/and installed between up-hole plate and body
There is sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167155.4A CN107859485A (en) | 2017-11-21 | 2017-11-21 | Rotate freely float shoe assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167155.4A CN107859485A (en) | 2017-11-21 | 2017-11-21 | Rotate freely float shoe assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107859485A true CN107859485A (en) | 2018-03-30 |
Family
ID=61702380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711167155.4A Pending CN107859485A (en) | 2017-11-21 | 2017-11-21 | Rotate freely float shoe assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107859485A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756778A (en) * | 2018-05-14 | 2018-11-06 | 中国石油集团西部钻探工程有限公司 | Oblique surface guide shoe |
| CN109403883A (en) * | 2018-12-26 | 2019-03-01 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of dedicated throttling of casing job is anti-down to return rotary guide shoe and application method |
| CN113090224A (en) * | 2019-12-23 | 2021-07-09 | 中国石油天然气股份有限公司 | Guide shoe for well cementation and expansion suspension well cementation tubular column |
| CN113389500A (en) * | 2020-03-12 | 2021-09-14 | 中海油能源发展股份有限公司 | Embedded floating shoe |
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| CN107013183A (en) * | 2017-05-31 | 2017-08-04 | 中国石油集团西部钻探工程有限公司 | Tail pipe plug device |
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| CN205422634U (en) * | 2015-12-21 | 2016-08-03 | 中国石油化工股份有限公司 | Float shoe is used in well cementation |
| CN205422577U (en) * | 2016-02-26 | 2016-08-03 | 河北上善石油机械有限公司 | Self -steering guide shoe first partially |
| CN206035426U (en) * | 2016-06-30 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Prestressing force doublestage earth anchor assembly |
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| CN107013183A (en) * | 2017-05-31 | 2017-08-04 | 中国石油集团西部钻探工程有限公司 | Tail pipe plug device |
| CN107227938A (en) * | 2017-07-12 | 2017-10-03 | 中国石油集团西部钻探工程有限公司 | Well rotary guide shoe assembly can be repaired |
| CN208380500U (en) * | 2017-11-21 | 2019-01-15 | 中国石油集团西部钻探工程有限公司 | Rotate freely float shoe assembly |
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| CN108756778A (en) * | 2018-05-14 | 2018-11-06 | 中国石油集团西部钻探工程有限公司 | Oblique surface guide shoe |
| CN109403883A (en) * | 2018-12-26 | 2019-03-01 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of dedicated throttling of casing job is anti-down to return rotary guide shoe and application method |
| CN113090224A (en) * | 2019-12-23 | 2021-07-09 | 中国石油天然气股份有限公司 | Guide shoe for well cementation and expansion suspension well cementation tubular column |
| CN113389500A (en) * | 2020-03-12 | 2021-09-14 | 中海油能源发展股份有限公司 | Embedded floating shoe |
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Effective date of registration: 20201110 Address after: 100120 Beijing Xicheng District six laying Kang Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Applicant before: CNPC Xibu Drilling Engineering Co.,Ltd. |