CN112576207A - Mechanical active rotary guide shoe - Google Patents
Mechanical active rotary guide shoe Download PDFInfo
- Publication number
- CN112576207A CN112576207A CN201910930854.2A CN201910930854A CN112576207A CN 112576207 A CN112576207 A CN 112576207A CN 201910930854 A CN201910930854 A CN 201910930854A CN 112576207 A CN112576207 A CN 112576207A
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- CN
- China
- Prior art keywords
- guide
- guide shoe
- pin
- wall
- mechanical active
- 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
- 238000003801 milling Methods 0.000 claims abstract description 35
- 238000010008 shearing Methods 0.000 claims abstract description 6
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000007105 physical stamina Effects 0.000 claims 1
- 239000004576 sand Substances 0.000 abstract description 11
- 238000005553 drilling Methods 0.000 abstract description 6
- 239000003208 petroleum Substances 0.000 abstract 1
- 238000000227 grinding Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
-
- 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
Landscapes
- 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)
- Earth Drilling (AREA)
Abstract
The invention provides a mechanical active type rotary guide shoe, which relates to the field of petroleum and gas drilling and well cementing tools and comprises a spiral mandrel and a guide shoe body, wherein the spiral mandrel is a vertically arranged cylinder, the guide shoe body is cylindrical and is provided with an accommodating cavity which is communicated up and down, the guide shoe body can be sleeved outside the spiral mandrel in a sliding manner, the guide shoe body is also fixedly connected with the spiral mandrel through a shearing pin, a guide groove is formed in the spiral mandrel, the guide groove is spirally wound along the outer wall of the spiral mandrel, a guide pin which is correspondingly matched with the guide groove is arranged on the inner wall of the guide shoe body, the guide pin is inserted into the guide groove and can be matched with the inner wall of the guide groove in a sliding manner, and a milling structure is arranged at the bottom end of. The mechanical active rotary guide shoe can scrape a sand bridge or a reducing well section, and ensures that a sleeve is smoothly put into the well.
Description
Technical Field
The invention relates to the field of petroleum and natural gas drilling and cementing tools, in particular to a mechanical active type rotary guide shoe.
Background
In the oil and gas well drilling and cementing construction, the casing is put into the well, which is a very important step. However, the problems of sand bridge and necking of the complicated well bore can cause that the casing is not put down in place, and the casing running operation and the subsequent well cementation construction are seriously influenced.
The existing method for solving the problems is to use an eccentric guide shoe to guide a sleeve to be put into a shaft bottom, but the existing eccentric guide shoe does not have a rotary cutting function, cannot finish the shaft wall, cannot fundamentally solve the problems of a sand bridge and necking, and often has the problems of blocking and failure in casing putting, so that the construction period and the construction cost are greatly increased.
In view of the above, the present inventors have designed a mechanical active rotation guide shoe through repeated experiments according to production design experiences in this field and related fields for many years, in order to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a mechanical active rotary guide shoe which can scrape a sand bridge or a reduced well section and ensure that a casing can be smoothly put into the well.
In order to achieve the above purpose, the invention provides a mechanical active type rotation guide shoe, wherein the mechanical active type rotation guide shoe comprises a spiral mandrel and a guide shoe body, the spiral mandrel is a vertically arranged cylinder, the guide shoe body is cylindrical and is provided with an accommodating cavity which is communicated up and down, the guide shoe body can be sleeved outside the spiral mandrel in a sliding manner, the guide shoe body is further fixedly connected with the spiral mandrel through a shearing pin, a guide groove is formed in the spiral mandrel, the guide groove is spirally wound along the outer wall of the spiral mandrel, a guide pin which is correspondingly matched with the guide groove is arranged on the inner wall of the guide shoe body, the guide pin is inserted into the guide groove and can be matched with the inner wall of the guide groove in a sliding manner, and a milling structure is arranged at the bottom end of the guide shoe body.
The mechanical active type rotary guide shoe comprises a guide shoe body, a guide shoe body and a grinding and milling structure, wherein the guide shoe body comprises a body joint, a connecting body and the grinding and milling body which are sequentially connected from top to bottom, and the grinding and milling structure is arranged on the outer wall of the grinding and milling body.
The mechanical active rotary guide shoe comprises a grinding and milling body, wherein the outer wall surface of the grinding and milling body is a conical surface gradually reducing in diameter from top to bottom, and the grinding and milling structure is a plurality of bulges arranged on the outer wall of the grinding and milling body.
The mechanical active rotary guide shoe as set forth above, wherein the shear pin is disposed between the body fitting and the helical mandrel.
The mechanical active rotary guide shoe as set forth above, wherein the guide pin is provided on an inner wall of the body joint.
The mechanical active type rotary guide shoe comprises a body joint, wherein the body joint is provided with a guide hole on the inner wall, one end of the guide pin is inserted into the guide hole, and the other end of the guide pin extends into the guide groove.
The mechanical active rotary guide shoe is characterized in that one end of the guide pin, which extends into the guide groove, is semi-spherical.
The mechanical active rotation guide shoe is characterized in that the top end of the guide groove and the bottom end of the guide groove are respectively provided with a stop structure for preventing the guide pin from being disengaged.
The mechanical active type rotary guide shoe comprises a guide shoe body, a spiral mandrel and a connecting part, wherein the spiral mandrel is provided with a connecting part used for connecting a sleeve, and the connecting part protrudes out of the guide shoe body.
The mechanical active type rotary guide shoe comprises a spiral spindle and a guide cavity, wherein the spiral spindle is provided with the guide cavity which penetrates up and down.
Compared with the prior art, the invention has the following characteristics and advantages:
the invention provides a mechanical active rotary guide shoe, wherein a guide groove on a spiral mandrel and a guide pin arranged on the inner wall of a guide shoe body form a spiral rotary mechanism; and then lifting the lower casing string, driving the guide shoe body to rotate through a spiral rotating mechanism between the spiral mandrel and the guide shoe body, and scraping the sand bridge and the reducing well section by a milling structure arranged at the bottom end of the guide shoe body to ensure that the casing is smoothly put into the guide shoe.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the invention as a matter of case.
Fig. 1 is a schematic structural view of a mechanical active rotary guide shoe according to the present invention;
FIG. 2 is a schematic view of the construction of the spiral mandrel of the present invention.
Description of reference numerals:
100. mechanical active rotary guide shoes; 10. A helical mandrel;
11. a guide groove; 20. A guide shoe body;
21. a guide pin; 22. Grinding and milling the structure;
23. a body joint; 24. A linker;
25. grinding and milling the body; 12. A connecting portion;
30. and shearing the pin.
Detailed Description
The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention.
As shown in fig. 1 and 2, the present invention provides a mechanical active type rotation guide shoe 100, the mechanical active type rotation guide shoe 100 includes a spiral spindle 10 and a guide shoe body 20, the spiral spindle 10 is a vertically arranged cylinder, the guide shoe body 20 is cylindrical and has a vertically through accommodating cavity, the guide shoe body 20 can be slidably sleeved outside the spiral spindle 10, the guide shoe body 20 is further fixedly connected with the spiral spindle 10 through a shear pin 30, the spiral spindle 10 is provided with a guide groove 11, the guide groove 11 is spirally wound along an outer wall of the spiral spindle 10, an inner wall of the guide shoe body 20 is provided with a guide pin 21 correspondingly matched with the guide groove 11, the guide pin 21 is inserted into the guide groove 11 and can be slidably matched with the inner wall of the guide groove 11, and a milling structure 22 is provided at a bottom end of the guide shoe body 20.
The mechanical active type rotary guide shoe 100 provided by the invention has the advantages that the guide groove 11 on the spiral mandrel 10 and the guide pin 21 arranged on the inner wall of the guide shoe body 20 form a spiral rotary mechanism, when in use, the mechanical active type rotary guide shoe 100 is connected to the lowest part of a casing string and is put into the underground along with the casing string, the casing string is continuously put down under the condition that the casing string is put down and is blocked, the spiral mandrel 10 connected with the casing string continuously moves down, and then the shearing pin 30 is cut off; then the lower casing string is lifted up, the guide shoe body 20 is driven to rotate through a spiral rotating mechanism between the spiral mandrel 10 and the guide shoe body 20, and a milling structure 22 arranged at the bottom end of the guide shoe body 20 scrapes a sand bridge and a reducing well section, so that smooth running of the casing is ensured.
The mechanical active rotary guide shoe 100 provided by the invention has the advantages that the rotary torque meets the field use requirement, the safety and the reliability are realized, the mechanical active rotary guide shoe can be used for casing running operation in any well type such as a vertical well, a horizontal well and the like, the problems of a sand bridge and hole shrinkage can be effectively solved, and the smooth running of a casing string can be ensured.
In an alternative example of the present invention, the guide shoe body 20 includes a body joint 23, a connecting body 24 and a milling body 25 connected in sequence from top to bottom, and the milling structure 22 is disposed on an outer wall of the milling body 25.
In an alternative example, the body fitting 23, the connecting body 24 and the milling body 25 are connected by a screw thread.
In the present invention, when the guide shoe body 20 rotates, the milling structure 22 located at the lower part of the guide shoe body 20 rotates at the position of meeting the resistance, thereby scraping the sand bridge or enlarging the reduced diameter well section.
In an alternative example of the present invention, the outer wall surface of the milling body 25 is a conical surface gradually reducing in diameter from top to bottom, and the milling structure 22 is a plurality of protrusions disposed on the outer wall of the milling body 25. The protrusion may be a protrusion made of cemented carbide material.
In an alternative example of the invention, the shear pin 30 is disposed between the body fitting 23 and the helical mandrel 10.
In an alternative example, the body joint 23 has a pin hole formed along a radial direction of the body joint 23, and the outer wall of the spiral mandrel 10 has a shear pin groove formed thereon to be aligned with the pin hole, and the shear pin 30 is inserted into the shear pin groove through the pin hole.
In an alternative example of the invention, the guide pin 21 is provided on the body fitting 23.
In an alternative example, a guide hole is formed in a side wall of the body joint 23, one end of the guide pin 21 is inserted into the guide hole, and the other end of the guide pin 21 extends into the guide groove 11. Preferably, the guide hole penetrates through a sidewall of the body joint 23 in a radial direction of the body joint 23.
In an alternative example, the end of the guide pin 21 that extends into the guide slot 11 is semi-spherical.
In an alternative example of the present invention, the top end of the guide groove 11 and the bottom end of the guide groove 11 are respectively provided with a stop structure for preventing the guide pin 21 from being removed, so as to ensure that the guide pin 21 always slides in the guide groove 11 and cannot be removed from the guide groove 11, and further ensure that the guide shoe body 20 cannot be removed from the spiral spindle 10.
In an alternative example of the present invention, the top end of the spiral mandrel 10 is provided with a connecting portion 12 for connecting the sleeve, and the connecting portion 12 protrudes from the guide body 20. In an alternative example, the inner wall of the connecting portion 12 is provided with an internal thread for connection.
In an alternative embodiment of the invention, the helical mandrel 10 has a flow directing cavity running through it. Like this, when milling structure 22 scraping sand bridge or expand the undergauge well section, can pour into the drilling fluid into through the water conservancy diversion chamber, take out the well head through the detritus that circulation drilling fluid will scrape, guarantee to mill the smooth operation of structure 22.
Referring to fig. 1 and fig. 2, a specific method for using the mechanical active rotation guide 100 according to the present invention is described in detail:
firstly, assembling a mechanical active rotary guide shoe 100, connecting the lower end of a connecting body 24 with a milling body 25 in a threaded manner, and connecting the upper end of the connecting body 24 with the lower end of a body joint 23 in a threaded manner, thereby completing the assembly of a guide shoe body 20; the screw mandrel 10 is inserted into the guide shoe body 20 at a predetermined position, the shear pin groove of the screw mandrel 10 is aligned with the pin hole of the body joint 23, the shear pin 30 is screwed into the pin hole of the body joint 23, the guide pin 21 is screwed into the guide hole of the body joint 23, and the half-round head of the front end of the guide pin 21 enters the guide groove 11 of the screw mandrel 10.
Then, the mechanical active rotation guide shoe 100 is installed at the lowest end of the casing string (the connecting part 12 of the spiral mandrel 10 is connected with the casing) and is put in along with the casing; when the casing is put down and meets a resistance, the casing string is continuously pressed down, and the shearing pin 30 on the mechanical active type rotating guide shoe 100 is sheared; subsequently, the casing string is lifted, the guide pin 21 slides in the guide groove 11 (spiral groove) of the spiral mandrel 10, the guide shoe body 20 (namely the body joint 23, the connecting body 24 and the milling body 25) rotates anticlockwise until the guide pin 21 reaches the bottommost end of the guide groove 11 of the spiral mandrel 10, at this time, the pump is started to circulate and the casing string is lowered, the mechanical active rotary guide shoe 100 drives the guide shoe body 20 (namely the body joint 23, the connecting body 24 and the milling body 25) to rotate clockwise through the sliding of the guide pin 21 in the guide groove 11 of the spiral mandrel 10, the milling structure 22 rotates at a blocking position, then a sand bridge is scraped or a reduced diameter well section is enlarged, meanwhile, the scraped rock debris is taken out of a well mouth by circulating drilling fluid, the drill string is repeatedly lifted and lowered, and finally the problems of the sand bridge and the reduced diameter are solved.
The present invention is not limited to the above embodiments, and in particular, various features described in different embodiments can be arbitrarily combined with each other to form other embodiments, and the features are understood to be applicable to any embodiment except the explicitly opposite descriptions, and are not limited to the described embodiments.
Claims (10)
1. The utility model provides an active rotatory guide shoe of machinery, its characterized in that, active rotatory guide shoe of machinery includes spiral mandrel and guide shoe body, spiral mandrel is the cylinder of vertical setting, the guide shoe body is the tube-shape and has the holding chamber that link up from top to bottom, this physical stamina of guide shoe overlaps with sliding outside the spiral mandrel, the guide shoe body still through shearing pin with spiral mandrel fixed connection, the guide slot has been seted up on the spiral mandrel, the guide slot is followed spiral coiling of spiral mandrel's outer wall, be provided with on the inner wall of guide shoe body with the guide slot corresponds complex uide pin, the uide pin insert in the guide slot and can with the inner wall sliding fit of guide slot, the bottom of guide shoe body is provided with the milling structure.
2. A mechanical active rotary guide shoe according to claim 1, wherein the guide shoe body comprises a body joint, a connecting body and a milling body connected in sequence from top to bottom, and the milling structure is disposed on an outer wall of the milling body.
3. The mechanical active rotary guide shoe as claimed in claim 2, wherein the outer wall surface of the milling body is a conical surface gradually decreasing in diameter from top to bottom, and the milling structure is a plurality of protrusions disposed on the outer wall of the milling body.
4. The mechanical active rotary guide of claim 2, wherein the shear pin is disposed between the body fitting and the helical mandrel.
5. The mechanical active rotary guide shoe of claim 2, wherein the guide pin is disposed on an inner wall of the body joint.
6. A mechanical active rotary guide shoe as set forth in claim 5, wherein said body joint has a guide hole formed on an inner wall thereof, one end of said guide pin being inserted into said guide hole, and the other end of said guide pin extending into said guide groove.
7. The mechanical active rotation guide shoe as claimed in claim 5, wherein an end of the guide pin extending into the guide groove is semi-spherical.
8. The mechanical active rotation guide shoe as claimed in claim 1, wherein the top end of the guide groove and the bottom end of the guide groove are respectively provided with a stop structure for preventing the guide pin from being removed.
9. A mechanical active rotary guide shoe according to claim 1, wherein the top end of the helical spindle is provided with a connection portion for connecting a sleeve, said connection portion protruding from the guide shoe body.
10. A mechanical active rotary guide shoe according to claim 1 or 8, wherein the spiral spindle has a guide cavity extending therethrough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910930854.2A CN112576207A (en) | 2019-09-29 | 2019-09-29 | Mechanical active rotary guide shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910930854.2A CN112576207A (en) | 2019-09-29 | 2019-09-29 | Mechanical active rotary guide shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112576207A true CN112576207A (en) | 2021-03-30 |
Family
ID=75110355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910930854.2A Pending CN112576207A (en) | 2019-09-29 | 2019-09-29 | Mechanical active rotary guide shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112576207A (en) |
-
2019
- 2019-09-29 CN CN201910930854.2A patent/CN112576207A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20221229 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Applicant after: BEIJING PETROLEUM MACHINERY Co.,Ltd. Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Applicant before: CHINA NATIONAL PETROLEUM Corp. Applicant before: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. |
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| TA01 | Transfer of patent application right |