CN201620773U - Novel welding type drill collar - Google Patents
Novel welding type drill collar Download PDFInfo
- Publication number
- CN201620773U CN201620773U CN2010201195343U CN201020119534U CN201620773U CN 201620773 U CN201620773 U CN 201620773U CN 2010201195343 U CN2010201195343 U CN 2010201195343U CN 201020119534 U CN201020119534 U CN 201020119534U CN 201620773 U CN201620773 U CN 201620773U
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- China
- Prior art keywords
- drill collar
- screw thread
- welding
- thread joint
- collar body
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- Expired - Lifetime
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Abstract
The utility model relates to a novel welding type drill collar, which is applied to petroleum natural gas and coal bed gas drilling wells. The novel welding type drill collar consists of a drill collar external screw thread joint, a drill collar body and a drill collar internal screw thread joint, wherein the drill collar body is in a cylindrical shape, and is provided with a center hole, the external screw thread joint is welded on one end of the drill collar body, the internal screw thread joint is welded on the other end of the drill collar body, and a friction butt welding method is adopted for welding of the drill collar external screw thread joint and the drill collar body and welding the drill collar internal screw thread joint and the drill collar body. The utility model has the advantages that the drill collar joints and the drill collar body are separately processed through adopting different kinds of materials, the limitation on the fatigue lifetime of the drill collar by the drill collar materials can be overcome, and in addition, the processing quality and the heat treatment quality of the screw threads of the drill collar joint can be improved, so the fatigue lifetime of the drill collar can be further improved. After the drill collar screw threads are damaged, the drill collar joints can be sawed off for welding new drill collar joints again, and the drill collar can be used after being repaired.
Description
Technical field
The utility model relates to petroleum gas and coal bed gas drilling technology field, and particularly the drilling well down-hole equipment is a kind of drill collar.
Background technology
Along with the exploitation of petroleum resources under the complex geological condition and applying of advanced drilling technology, the degree of depth of drilling well is more and more darker, and drilling condition is more and more abominable.This situation has proposed requirements at the higher level to the drill collar performance, especially the anti-fatigue performance at drill collar joint screw thread position.Traditional monolithic drill collar two ends joint screw thread difficulty of processing is big, and precision is low, and interchangeability is low, and the heat treatment difficulty is big, has a strong impact on the anti-fatigue performance and the functional performance at drill collar joint screw thread position.It is the fatigue failure that occurs in drill collar joint screw thread position that 90% drill collar failure accidents is arranged, the application life that has determined drill collar fatigue life at drill collar joint screw thread position.Be subjected to the influence of many-sided factors such as service condition, the drill collar of producing is an integral body at present, the material anti-fatigue performance that uses is generally lower, because the joint and the body of monolithic drill collar are commaterial, the fatigue life at corresponding reduction joint screw thread position, the factor of material itself becomes restriction and improves the drill collar joint major obstacle of fatigue life.
The utility model content
The purpose of this utility model is: a kind of novel welded type drill collar is provided, adopt drill collar male connection and drill collar female adapter to process respectively, be welded on the two ends of drill collar body then, be convenient to processing of drill collar joint screw thread and heat treatment, improve drill collar threads interchangeability and anti-fatigue performance, prolong the application life of drill collar, improve drilling efficiency.
The technical solution adopted in the utility model is: novel welded type drill collar, mainly form by drill collar male connection, drill collar body and drill collar female adapter; The drill collar body is the cylinder bodily form, centre bore is arranged, it is characterized in that: the end at the drill collar body is welded with male connection, is welded with female adapter at the other end of drill collar body, the high fatigue life material is adopted in male connection and female adapter, and the drill collar body adopts common material.The helicitic texture of drill collar male connection and drill collar female adapter does not change.
It is the friction duct butt-welding method that drill collar male connection and drill collar body just weld what adopt with the welding of drill collar body and drill collar female adapter.
The beneficial effects of the utility model: this novel welded type drill collar, drill collar joint and body are adopted the foreign material separate machined, can not only overcome of the restriction of drill collar material to its fatigue life, and can improve the crudy and the thermal treatment quality of drill collar joint screw thread, thereby the fatigue life of further improving drill collar.Drill collar threads can also amputate drill collar joint and weld new drill collar joint again after damaging, and repairs the back and uses.
Description of drawings
Fig. 1 is this novel welded type drill collar structural representation.
Among the figure, 1. drill collar male connection, 2. weld seam, 3. drill collar body, 4. drill collar female adapter.
The specific embodiment
Embodiment 1: with 165.1 millimeter (6 of an external diameter
1/
2The novel welded type drill collar of ") is an example, and the utility model is described in further detail.
Consult Fig. 1.This novel welded type drill collar, total length is 9.1 meters.Form by drill collar male connection 1, drill collar body 3 and drill collar female adapter 4; Drill collar body 3 is the cylinder bodily form, 165.1 millimeter (6 of external diameter
1/
2"), 8.1 meters of drill collar body 3 length.Drill collar body 3 has centre bore, 57.2 millimeter (2 of center-hole diameter
1/
2").End at drill collar body 3 is welded with a male connection 1, is welded with a female adapter 4 at the other end of drill collar body 3.Drill collar male connection 1 and drill collar female adapter 4 have centre bore, 57.2 millimeter (2 of center-hole diameter
1/
2").The center line of drill collar male connection 1, drill collar female adapter 4 and drill collar body 3 is on same straight line.
What the welding of the welding of drill collar male connection 1 and drill collar body 3 and drill collar body 3 and drill collar female adapter 4 was adopted is the friction duct butt-welding method.One all weld seams 2 are arranged between drill collar body 3 and drill collar male connection 1; One all weld seams 2 are arranged between drill collar body 3 and drill collar female adapter 4.
Claims (2)
1. a novel welded type drill collar mainly is made up of drill collar male connection (1), drill collar body (3) and drill collar female adapter (4); Drill collar body (3) is the cylinder bodily form, and drill collar body (3) has centre bore, it is characterized in that: the end at drill collar body (3) is welded with male connection (1), is welded with female adapter (4) at the other end of drill collar body (3).
2. novel welded type drill collar according to claim 1 is characterized in that: what the welding of the welding of drill collar male connection (1) and drill collar body (3) and drill collar body (3) and drill collar female adapter (4) was adopted is the friction duct butt-welding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201195343U CN201620773U (en) | 2010-02-25 | 2010-02-25 | Novel welding type drill collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201195343U CN201620773U (en) | 2010-02-25 | 2010-02-25 | Novel welding type drill collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201620773U true CN201620773U (en) | 2010-11-03 |
Family
ID=43024229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201195343U Expired - Lifetime CN201620773U (en) | 2010-02-25 | 2010-02-25 | Novel welding type drill collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201620773U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220469A (en) * | 2011-07-15 | 2011-10-19 | 包头市丰达石油机械有限责任公司 | Heat treatment process during production of drill collar for petroleum well drilling |
| CN108817646A (en) * | 2018-07-09 | 2018-11-16 | 山东大学 | A method of using linear friction welding technique welding austenitic alloy steel and preparing non magnetic drill collar |
| CN108907446A (en) * | 2018-07-09 | 2018-11-30 | 山东大学 | It is a kind of for connecting the radial friction welding process of austenitic alloy steel and non magnetic drill collar |
| CN108907447A (en) * | 2018-07-09 | 2018-11-30 | 山东大学 | The axial rub welding technique of high-nitrogen austenitic stainless steel and non magnetic drill collar |
-
2010
- 2010-02-25 CN CN2010201195343U patent/CN201620773U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220469A (en) * | 2011-07-15 | 2011-10-19 | 包头市丰达石油机械有限责任公司 | Heat treatment process during production of drill collar for petroleum well drilling |
| CN108817646A (en) * | 2018-07-09 | 2018-11-16 | 山东大学 | A method of using linear friction welding technique welding austenitic alloy steel and preparing non magnetic drill collar |
| CN108907446A (en) * | 2018-07-09 | 2018-11-30 | 山东大学 | It is a kind of for connecting the radial friction welding process of austenitic alloy steel and non magnetic drill collar |
| CN108907447A (en) * | 2018-07-09 | 2018-11-30 | 山东大学 | The axial rub welding technique of high-nitrogen austenitic stainless steel and non magnetic drill collar |
| WO2020010782A1 (en) * | 2018-07-09 | 2020-01-16 | 山东大学 | Axial friction welding process for high-nitrogen austenitic stainless steel and non-magnetic drill collar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101103 |
|
| CX01 | Expiry of patent term |