CN201428400Y - Casing protection device for drilling - Google Patents
Casing protection device for drilling Download PDFInfo
- Publication number
- CN201428400Y CN201428400Y CN2009201606314U CN200920160631U CN201428400Y CN 201428400 Y CN201428400 Y CN 201428400Y CN 2009201606314 U CN2009201606314 U CN 2009201606314U CN 200920160631 U CN200920160631 U CN 200920160631U CN 201428400 Y CN201428400 Y CN 201428400Y
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- CN
- China
- Prior art keywords
- shell
- drilling
- mandrel
- casing
- protection device
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- Expired - Fee Related
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Abstract
The utility model discloses a casing protection device for drilling, which comprises a core shaft (1), a cutting sleeve (2) and a shell (3) which are made from steel materials, wherein the shell (3) and the core shaft (1) are connected by a sliding sleeve in an integrated type, the inner surface of the shell (3) is sintered with a wearable hard alloy, a contact part of the core shaft (1) and the inner surface of the shell is welded with a columnar hard alloy, the cutting sleeve (2) is sleeved on the core shaft (1), and is welded with the core shaft (1) together. Therefore, during the process of drilling, an outer sleeve and the inner wall of a casing or a well wall are formed into a sliding bearing type support through the casing protection device for drilling, thereby achieving to reducethe attrition of the casing, which is caused because a drilling rod and the inner wall of the casing directly contact during the drilling process, playing the role of protecting the casing and the drilling rod, playing the role of supporting the drilling rod and reducing the rotating torque of drilling.
Description
Technical field
The casing protection device that the utility model provides a kind of drilling well to use; casing protection device of using by this drilling well in drilling process and internal surface of sleeve pipe or the borehole wall form the sliding bearing formula and support; thereby realize to reduce the direct casing wear that contacts initiation of drilling rod and internal surface of sleeve pipe in the drilling process, play the effect of protective casing and drilling rod.
Background technology
In deep-well and the ultradeep well drillng operation, because drilling period is long, drilling rod rotational time in sleeve pipe is long, causes the serious wear to sleeve pipe.Same reason in the extended reach well drilling operation, because the influence of hole angle causes the wearing and tearing of drilling rod to sleeve pipe, is brought hidden danger to oil field production and later stage operation.At present, technology commonly used is to use a kind of rubber drill pipe protector to come protective casing, but because this technologic material is a rubber, and is high temperature resistant and polishing machine is poor, and easily aging coming off caused other shop problem, progressively is eliminated.
The utility model content
The purpose of this utility model provides the casing protection device that a kind of drilling well is used; in drilling process; forming the sliding bearing formula with the internal surface of sleeve pipe or the borehole wall supports; thereby realize to reduce the direct casing wear that contacts initiation of drilling rod and internal surface of sleeve pipe in the drilling process, play the effect of protective casing and drilling rod.
For achieving the above object; the casing protection device that the utility model drilling well is used is made up of mandrel, cutting ferrule, shell; three parts are steel material; be connected for the monolithic sliding sleeve between shell and the mandrel; the inner surface of outer cover sintering has wearable hard alloy; mandrel and inner surface of outer cover contact portion welding-on have column shaped carbide alloy, and cutting ferrule is enclosed within on the mandrel, connects together by welding with mandrel.
The external surface of shell has many screw wings.
The shell external diameter is greater than drilling rod body and joint external diameter, and mandrel hydrophthalmia diameter is identical with tool joint hydrophthalmia diameter, and cutting ferrule length is equivalent to drill pipe nipple.
After adopting such structure; because the casing protection device that the utility model drilling well is used is made up of mandrel, cutting ferrule, shell; three parts are steel material; be connected for the monolithic sliding sleeve between shell and the mandrel; mandrel can be realized and being connected of drilling rod; form the tubing string string; and provide installing space for shell; the inner surface of outer cover sintering has wearable hard alloy; mandrel and inner surface of outer cover contact portion welding-on have column shaped carbide alloy; the sliding friction that two parts form is paid and can be relied on carbide alloy to strengthen abrasion-resistance, improves device application life.
Weld cutting ferrule on the mandrel, can realize, guarantee in the drilling process only slide rotation and can not from mandrel, deviating from of a mandrel relatively of shell shell location.
Because the external surface of shell has many screw wings, in drilling process, reduce the frictional resistance of the drilling tool and the borehole wall, and drilling tool is played a supporting role.
Because the shell external diameter is greater than drilling rod body and joint external diameter, mandrel hydrophthalmia diameter is identical with tool joint hydrophthalmia diameter, and mandrel length is equivalent to drill pipe nipple, all satisfies the requirement that normally makes a trip on the structure.
Description of drawings
Fig. 1 is the structural representation of the casing protection device used of drilling well.
The specific embodiment
The casing protection device that the utility model drilling well shown in Figure 1 is used: be made up of mandrel 1, cutting ferrule 2, shell 3, mandrel 1, cutting ferrule 2, shell 3 are steel material.For the monolithic sliding sleeve is connected, shell 3 inner surface sintering have wearable hard alloy between shell 3 and the mandrel 1, and mandrel 1 has column shaped carbide alloy with inner surface of outer cover contact portion welding-on, and cutting ferrule 2 is enclosed within on the mandrel 1, connect together by welding with mandrel 1.The external surface of shell 3 has many screw wings.The casing protection device outside dimension that drilling well is used is greater than the tool joint external diameter, and the hydrophthalmia diameter is identical with tool joint hydrophthalmia diameter, and total length is equivalent to drill pipe nipple, and package unit links to each other with drilling rod by standard drilling rod button, is installed on the rod string according to technological design.
Like this; during use; the casing protection device of the utility model drilling well being used according to technological design is connected on the drill string; in the normal drilling process; because the shell external diameter is greater than drilling rod body and joint external diameter; so the preferential contact sleeve inside pipe wall of protective device or the borehole wall; form support with the sleeve pipe and the borehole wall; having reduced drilling rod contacts with the direct of the sleeve pipe or the borehole wall; rotate because shell 3 slides with respect to mandrel 1, and sleeve pipe does not rotatablely move relatively, therefore; reduce the wearing and tearing of drilling rod, simultaneously drilling rod is also played the abrasion protection effect sleeve pipe.
Claims (4)
1, the casing protection device used of a kind of drilling well; it is characterized in that: form by mandrel (1), cutting ferrule (2), shell (3); be connected for the monolithic sliding sleeve between shell (3) and the mandrel (1); shell (3) inner surface sintering has wearable hard alloy; mandrel (1) has column shaped carbide alloy with shell (3) inner surface contact portion welding-on; cutting ferrule (2) is enclosed within on the mandrel (1), connects together by welding with mandrel (1).
2, the casing protection device used of drilling well according to claim 1, it is characterized in that: the external surface of shell (3) has many screw wings.
3, the casing protection device used of drilling well according to claim 1, it is characterized in that: mandrel (1), cutting ferrule (2), shell (3) are steel material.
4, the casing protection device used of drilling well according to claim 1, it is characterized in that: shell (3) external diameter is greater than drilling rod body and joint external diameter, and mandrel (1) hydrophthalmia diameter is identical with tool joint hydrophthalmia diameter, and mandrel (2) length is equivalent to drill pipe nipple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201606314U CN201428400Y (en) | 2009-06-26 | 2009-06-26 | Casing protection device for drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201606314U CN201428400Y (en) | 2009-06-26 | 2009-06-26 | Casing protection device for drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201428400Y true CN201428400Y (en) | 2010-03-24 |
Family
ID=42032135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201606314U Expired - Fee Related CN201428400Y (en) | 2009-06-26 | 2009-06-26 | Casing protection device for drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201428400Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806176A (en) * | 2015-04-24 | 2015-07-29 | 周延卿 | Low-resistance sliding type drill rod for geological horizontal drilling rig |
| CN108266425A (en) * | 2017-11-14 | 2018-07-10 | 徐州永佳液压设备有限公司 | A kind of bimetal structure piston rod and its processing method |
| CN108756866A (en) * | 2018-05-08 | 2018-11-06 | 中国石油集团渤海钻探工程有限公司 | A kind of protective device of underground resistivity female thread |
-
2009
- 2009-06-26 CN CN2009201606314U patent/CN201428400Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806176A (en) * | 2015-04-24 | 2015-07-29 | 周延卿 | Low-resistance sliding type drill rod for geological horizontal drilling rig |
| CN108266425A (en) * | 2017-11-14 | 2018-07-10 | 徐州永佳液压设备有限公司 | A kind of bimetal structure piston rod and its processing method |
| CN108266425B (en) * | 2017-11-14 | 2024-01-09 | 徐州永佳液压设备有限公司 | Double-metal-structure piston rod and processing method thereof |
| CN108756866A (en) * | 2018-05-08 | 2018-11-06 | 中国石油集团渤海钻探工程有限公司 | A kind of protective device of underground resistivity female thread |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20100626 |