CN2811542Y - Drilling casing protection device - Google Patents
Drilling casing protection device Download PDFInfo
- Publication number
- CN2811542Y CN2811542Y CN 200520114067 CN200520114067U CN2811542Y CN 2811542 Y CN2811542 Y CN 2811542Y CN 200520114067 CN200520114067 CN 200520114067 CN 200520114067 U CN200520114067 U CN 200520114067U CN 2811542 Y CN2811542 Y CN 2811542Y
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- CN
- China
- Prior art keywords
- mandrel
- protection device
- casing
- casing protection
- drilling
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- Expired - Fee Related
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Abstract
The utility model relates to a casing tube protection device for bore wells, which is an under-well tool used in deep wells and bore wells with large displacement for preventing the abrasion of casing tubes so as to reduce the rotary torsion of rod feeding. The utility model comprises a mandrel, a cutting sleeve and an outer casing, wherein both ends of the mandrel are respectively provided with a drilling rod buckle used for connecting directly with the drilling rod; the cutting sleeve is fixed on the outer wall of the mandrel; the outer casing has a cylinder-shaped structure, the inner diameter of the outer casing is larger than the outer diameter of the mandrel, and the outer diameter of the outer casing is larger than the outer diameter of the cutting sleeve; the outer casing is directly sheathed on the mandrel, and the upper end contacts the cutting sleeve; the cutting sleeve restricts the outer casing in the axial direction; therefore, the outer casing keeps relative stillness with the mandrel in the axial direction. In well drilling operation, the drilling rod drives the mandrel to rotate, while the outer casing rotates with the mandrel correspondingly. The outer casing is tightly clung to casing tubes or the inner wall of a well cylinder, so that the outer casing does not rotate under the action of the friction of the well wall or the casing tubes. Therefore, the utility model can perform the functions of preventing abrasion to casing tubes, supporting the drilling rod and reducing the drilling rotary torsion.
Description
Technical field
The utility model relates to the casing protection device in a kind of drilling equipment field, particularly relate to a kind of in drilling process, the casing protection device that the direct sleeve pipe that contacts initiation that reduces drilling rod and internal surface of sleeve pipe and the drilling well of drill rod abrasion are used.
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, cause drilling rod to be attached to internal surface of sleeve pipe one side for a long time, consumed the moment of torsion of a large amount of Rotary table for drilling machine or top drive drilling machine, the actual torque that causes rotating brokenly rock reduce or drill string to the wearing and tearing of sleeve pipe, can produce and the later stage operation bring hidden danger to the oil field.For overcoming above-mentioned defective; at present; in the actual well drilled operation; adopt a kind of rubber drill pipe protector to be used as the casing protection device that drilling well is used; it can alleviate moment of torsion reduction and wear problems to a certain extent, but because the material of this drilling rod protection hoop is a rubber, it is high temperature resistant and polishing machine is poor; thereby aging easily coming off, thereby can cause other shop problems.
This shows that the casing protection device that above-mentioned existing drilling well is used obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.Because the defective that the casing protection device that above-mentioned existing drilling well is used exists; the design people is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge; and the utilization of cooperation scientific principle; actively studied innovation; the casing protection device of using in the hope of the drilling well of founding a kind of new structure; can improve the casing protection device that general existing drilling well is used, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the utility model that has practical value finally.
Summary of the invention
Main purpose of the present utility model is; overcome the defective that casing protection device that existing drilling well uses exists; and the casing protection device that provides a kind of new drilling well to use; technical problem to be solved is to make it pass through this device overcoat and internal surface of sleeve pipe or the borehole wall in drilling process to form the support of sliding bearing formula; reduce in the drilling process because of direct the contact sleeve pipe and the drill rod abrasion that cause of drilling rod with internal surface of sleeve pipe; protective casing and drilling rod; thereby be suitable for practicality more, and have the value on the industry.
The purpose of this utility model and to solve its technical problem be to adopt following technical scheme to realize.According to the casing protection device that a kind of drilling well that the utility model proposes is used, it comprises: mandrel, cutting ferrule and shell, and the mandrel two ends are respectively equipped with the drilling rod button, are used for directly being connected with drilling rod; Cutting ferrule is fixed on the mandrel outer wall; Shell is a cylinder-like structure, and its internal diameter is greater than outside diameter of mandrel, and its external diameter is greater than the cutting ferrule external diameter, this shell is socketed on the mandrel, its upper end contacts with cutting ferrule, is fastened in to limit this shell on the axial direction, makes this shell keep relative static with mandrel in the axial direction.
The purpose of this utility model and solve its technical problem and can also be further achieved by the following technical measures.
The casing protection device that aforesaid drilling well is used, wherein said inner surface of outer cover is provided with one deck hard alloy abrasion-resistant layer.
The casing protection device that aforesaid drilling well is used, the inner surface by shell surrounded of wherein said mandrel is provided with one deck hard alloy abrasion-resistant layer.
The casing protection device that aforesaid drilling well is used, wherein said inner surface of outer cover is provided with one deck hard alloy abrasion-resistant layer, and also is provided with one deck hard alloy abrasion-resistant layer by the inner surface of the mandrel that shell surrounded.
The casing protection device that aforesaid drilling well is used, the drilling rod button of wherein said mandrel upper end is a box, mandrel lower end drilling rod button is a pin thread.
The casing protection device that aforesaid drilling well is used, wherein said outer surface of outer cover is provided with one or several groove.
The casing protection device that aforesaid drilling well is used, wherein said groove are lines, vertically lines or inclination lines in the shape of a spiral.
The casing protection device that aforesaid drilling well is used, wherein said cutting ferrule be by latching fix, screw thread is fixed or be fixed on the mandrel by assembly welding.
The casing protection device that aforesaid drilling well is used, the external surface of wherein said shell is a smooth surface.
By technique scheme, the casing protection device that the utility model drilling well is used has following advantage at least:
The casing protection device that this drilling well is used is in drillng operation; drilling rod drives the mandrel rotation; rotate and shell is relative with mandrel; shell is close on sleeve pipe or the shaft in wall; with the borehole wall or the effect of sleeve friction power under do not rotate; thereby reduced in the drilling process because of direct the contact sleeve pipe and the drill rod abrasion that cause of drilling rod with internal surface of sleeve pipe, protective casing and drilling rod, thus be suitable for practicality more.
In sum; the casing protection device that the drilling well of the utility model special construction is used; it has above-mentioned many advantages and practical value; and in like product, do not see have similar structure design to publish or use and really genus innovation; no matter it structurally or bigger improvement all arranged on the function; have large improvement technically; and produced handy and practical effect; and the casing protection device that more existing drilling well is used has the multinomial effect of enhancement; thereby be suitable for practicality more; and have the extensive value of industry, really be a novelty; progressive; practical new design.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of manual, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 be casing protection device first embodiment that uses of the utility model drilling well partly cut open structural representation.
Fig. 2 be casing protection device second embodiment that uses of the utility model drilling well partly cut open structural representation.
1: mandrel 2: cutting ferrule
3: shell 4,5: the drilling rod button
6: hard alloy abrasion-resistant layer 7: hard alloy abrasion-resistant layer
8: groove
The specific embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked; below in conjunction with accompanying drawing and preferred embodiment; to its specific embodiment of casing protection device, structure, feature and the effect of using according to the drilling well that the utility model proposes thereof, describe in detail as after.
The operating principle of the casing protection device that drilling well of the present utility model is used is:
According to technological design the casing protection device is connected on the drill string; in the normal drilling process; because shell 3 external diameters are greater than drilling rod body and joint external diameter; so the casing protection assembly first contact sleeve inside pipe wall or the borehole wall; form support with the sleeve pipe or the borehole wall, reduced drilling rod and contacted with the direct of the sleeve pipe or the borehole wall.Because the rotation of sliding takes place with respect to shell 3 in mandrel 1, and in fact shell 3 relative sleeve pipes do not rotate motion, therefore, reduce the wearing and tearing of drilling rod to sleeve pipe, simultaneously drilling rod are also played the effect that reduces wearing and tearing.
See also shown in Figure 1, be the casing protection device used of the utility model first embodiment drilling well partly cut open structural representation.In preferred embodiment of the present utility model, the casing protection device that this drilling well is used mainly comprises: mandrel 1, and cutting ferrule 2,3, three kinds of parts of shell are steel material.
Wherein, the effect of mandrel 1 is to realize being connected of casing protection assembly of devices of the present utility model and drilling rod, forms the tubing string string, and provides installing space for overcoat 3.The two ends of mandrel 1 are provided with standard drilling rod button 4 and 5, and wherein, the drilling rod button 4 of mandrel upper end is a box, and mandrel lower end drilling rod button 5 is a pin thread.A whole set of protective device links to each other with drilling rod by standard drilling rod button 4,5, is installed on the rod string according to technological design.
Wherein, shell 3 inner surface sintering have hard alloy abrasion-resistant layer 6, mandrel 1 has column shaped carbide alloy wearing layer 7 with the contact portion welding-on of shell 3 inner surfaces, in use, two parts shells 3 and mandrel 1 form sliding friction, it can rely on hard alloy layer to strengthen abrasion-resistance, the application life of improving whole device.In addition, the external surface of shell 3 is smooth surfaces.
In actual production, do not allow shell 3 relative mandrel 1 on the axial direction of mandrel 1 to be moved, so the location on must carrying out axially to shell 1.In embodiment of the present utility model, welding cutting ferrule 2 on mandrel 1 makes it guarantee in drilling process take place the to slide rotation and can not deviating from from mandrel 1 of 3 relative mandrels 1 of shell.
Wherein, the outside dimension of shell 3 is greater than the outside dimension of cutting ferrule 2, and the internal diameter size of shell 3 (if having, comprising hard alloy abrasion-resistant layer 6) is greater than mandrel 1 outside dimension of (if having, comprising hard alloy abrasion-resistant layer 7).
The novel cutting ferrule of this use 2 can also be that engage thread is fixed with the fixed form of mandrel 1, perhaps adopts the latching mode to fix, and makes it realize purpose to the qualification position of overcoat 3 in actual production.
The outside dimension of shell 3 is greater than the tool joint external diameter in the casing protection device, and the hydrophthalmia diameter is identical with tool joint hydrophthalmia diameter, and total length is equivalent to drill pipe nipple, all satisfies the requirement that normally makes a trip on the structure.
In first embodiment of casing protection device of the present utility model, the external surface of shell 3 wherein is level and smooth.See also shown in Figure 2, be casing protection device second embodiment that uses of the utility model drilling well partly cut open structural representation.This casing protection device is except that having the described structure of first embodiment, and the external surface of shell 3 wherein is provided with groove 8.The quantity of groove 8 can be one or more of.Groove 8 be in the shape of a spiral lines or vertically lines also can be that the silt that described groove 8 helps in the sleeve pipe discharges than some lines of fore-and-aft tilt.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in the scope that does not break away from technical solutions of the utility model, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solutions of the utility model content, foundation technical spirit of the present utility model is to above any simple modification that embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (10)
1, the casing protection device used of a kind of drilling well, it comprises: mandrel, cutting ferrule and shell is characterized in that:
The mandrel two ends are respectively equipped with the drilling rod button, are used for directly being connected with drilling rod;
Cutting ferrule is fixed on the mandrel outer wall;
Shell is a cylinder-like structure, and its internal diameter is greater than outside diameter of mandrel, and its external diameter is greater than the cutting ferrule external diameter, this shell is socketed on the mandrel, its upper end contacts with cutting ferrule, is fastened in to limit this shell on the axial direction, makes this shell keep relative static with mandrel in the axial direction.
2, the casing protection device used of drilling well according to claim 1 is characterized in that wherein said inner surface of outer cover is provided with one deck hard alloy abrasion-resistant layer.
3, the casing protection device used of drilling well according to claim 1 is characterized in that the inner surface by shell surrounded of wherein said mandrel is provided with one deck hard alloy abrasion-resistant layer.
4, the casing protection device used of drilling well according to claim 1 is characterized in that wherein said inner surface of outer cover is provided with one deck hard alloy abrasion-resistant layer, and also is provided with one deck hard alloy abrasion-resistant layer by the inner surface of the mandrel that shell surrounded.
5, the casing protection device used of drilling well according to claim 1 is characterized in that the drilling rod button of wherein said mandrel upper end is a box, and mandrel lower end drilling rod button is a pin thread.
6, the casing protection device that each described drilling well is used according to claim 1 to 5 is characterized in that wherein said outer surface of outer cover is provided with one or several groove.
7, the casing protection device used of drilling well according to claim 6 is characterized in that wherein said groove is lines, vertically lines or inclination lines in the shape of a spiral.
8, the casing protection device that each described drilling well is used according to claim 1 to 5, it is characterized in that wherein said cutting ferrule be by latching fix, screw thread is fixed or be fixed on the mandrel by assembly welding.
9, the casing protection device used of drilling well according to claim 6, it is characterized in that wherein said cutting ferrule be by latching fix, screw thread is fixed or be fixed on the mandrel by assembly welding.
10, the casing protection device used of drilling well according to claim 8, the external surface that it is characterized in that wherein said shell is a smooth surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520114067 CN2811542Y (en) | 2005-07-21 | 2005-07-21 | Drilling casing protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520114067 CN2811542Y (en) | 2005-07-21 | 2005-07-21 | Drilling casing protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2811542Y true CN2811542Y (en) | 2006-08-30 |
Family
ID=36937929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520114067 Expired - Fee Related CN2811542Y (en) | 2005-07-21 | 2005-07-21 | Drilling casing protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2811542Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191921A (en) * | 2011-05-19 | 2011-09-21 | 地质矿产部无锡钻探工具厂 | Wear-resisting sheath structure for drill stem |
| CN103874822A (en) * | 2011-10-04 | 2014-06-18 | 瓦卢莱克钻孔产品法国公司 | Drill stem element and corresponding drill pipe |
| WO2019148357A1 (en) * | 2018-01-31 | 2019-08-08 | 成都科盛石油科技有限公司 | Assistive apparatus for oil exploitation |
-
2005
- 2005-07-21 CN CN 200520114067 patent/CN2811542Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191921A (en) * | 2011-05-19 | 2011-09-21 | 地质矿产部无锡钻探工具厂 | Wear-resisting sheath structure for drill stem |
| CN102191921B (en) * | 2011-05-19 | 2015-11-25 | 无锡钻探工具厂有限公司 | A kind of abrasion resistant protective sleeve structure for drill rod |
| CN103874822A (en) * | 2011-10-04 | 2014-06-18 | 瓦卢莱克钻孔产品法国公司 | Drill stem element and corresponding drill pipe |
| CN103874822B (en) * | 2011-10-04 | 2016-02-03 | 瓦卢莱克钻孔产品法国公司 | Drilling rod assembly and corresponding drilling pipe |
| US9957758B2 (en) | 2011-10-04 | 2018-05-01 | Vallourec Drilling Products France | Drill stem element and corresponding drill pipe |
| WO2019148357A1 (en) * | 2018-01-31 | 2019-08-08 | 成都科盛石油科技有限公司 | Assistive apparatus for oil exploitation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060830 Termination date: 20140721 |
|
| EXPY | Termination of patent right or utility model |