JPH0258693A - Tool joint for drill pipe - Google Patents
Tool joint for drill pipeInfo
- Publication number
- JPH0258693A JPH0258693A JP20790088A JP20790088A JPH0258693A JP H0258693 A JPH0258693 A JP H0258693A JP 20790088 A JP20790088 A JP 20790088A JP 20790088 A JP20790088 A JP 20790088A JP H0258693 A JPH0258693 A JP H0258693A
- Authority
- JP
- Japan
- Prior art keywords
- drill pipe
- joint
- tool joint
- film
- present
- 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
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
- Earth Drilling (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、ドリルパイプ用ソールジヨイント、特に、
耐摩耗性に優れた外面を有するソールジヨイントに関す
るものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sole joint for a drill pipe, in particular,
This invention relates to a sole joint having an outer surface with excellent wear resistance.
従来、地中に油井管用等の穴をあける際に使用するドリ
ルパイプは、通常の炭素鋼や高Ｃｒ合金鋼等からなって
おり、ドリルパイプ自身によシ掘削刃を回転させて地中
を掘シ進んで行くもの、あるいは、ドリルパイプ内に圧
入される高圧水をドリルパイプの先端から噴出させて地
中を掘り進んで行くものである。Traditionally, drill pipes used to drill underground holes for oil country tubular goods, etc. are made of ordinary carbon steel or high Cr alloy steel. A type of drill that advances by drilling, or a type that drills underground by squirting high-pressure water that is injected into the drill pipe and ejects it from the tip of the drill pipe.
上記ドリルパイプは、この両端に溶接されたツールジヨ
イントを介して順次連結されて地中を掘シ進んで行く。The drill pipes are sequentially connected via tool joints welded to both ends and drilled underground.
しかし、上記ツールジヨイントの外面は、掘削穴と回転
しながら接触するので、摩耗が激しく、ドリルパイプの
折損や曲シの原因となる。However, since the outer surface of the tool joint rotates and comes into contact with the drilled hole, it is subject to severe wear and may cause breakage or bending of the drill pipe.
従って、この発明の目的は、耐摩耗性に優れた外面を有
するドリルパイプ用ソールジヨイントを提供することに
ある。Accordingly, an object of the present invention is to provide a drill pipe sole joint having an outer surface with excellent wear resistance.
この発明は、外面にセラミックスまだはサーメットから
なる皮膜が形成されていることに特徴を有するものであ
る。This invention is characterized in that a coating made of ceramic or cermet is formed on the outer surface.
次に、この発明のドリルパイプ用ツールジヨイントの一
実施態様を図面を参照しながら説明する。Next, one embodiment of the drill pipe tool joint of the present invention will be described with reference to the drawings.
第１図は、この発明のドリルパイプ用ツールジヨイント
の一実施態様を示す部分断面図である。FIG. 1 is a partial sectional view showing one embodiment of the drill pipe tool joint of the present invention.
第１図に示すように、この発明のドリルパイプ用ツール
ジヨイントｌは、通常の炭素鋼や高Ｃｒ合金鋼からなる
ジヨイント本体ＩＡの外面に、セラミックス（Ａε２０
３ 、 ＴｉＯ２） またはザーメット（ＷＣ−Ｃｏ
、 Ｃｒ３０□−ＮｉＣｒ 、 ＴｉＣ−ＮｉＣｒ ）
からなる皮膜ＩＢが形成されたものからなっている。As shown in Fig. 1, the drill pipe tool joint l of the present invention has a ceramic (Aε20
3, TiO2) or Zermet (WC-Co
, Cr30□-NiCr, TiC-NiCr)
A coating IB consisting of the following is formed.
上記皮膜ＩＢは、上述したように、セラミックス比較ツ
ールジヨイントの外面をそれぞれ摩耗試験（ＡＳＴＭ
Ｇ６５ ）に供した。この試験結果を第１表に示す。As mentioned above, the coating IB was applied to the outer surface of the ceramic comparison tool joint through an abrasion test (ASTM).
G65). The test results are shown in Table 1.
第１表
によって形成するのが好ましく、膜厚は５０から３００
μｍの範囲が良い。It is preferable to form according to Table 1, and the film thickness is from 50 to 300.
The μm range is good.
次に、この発明の実施例について説明する。 Next, embodiments of the invention will be described.
ＷＣ−１２％Ｃｏの粉末を、炭素鋼（ＡＰＩ ５ＡＸ
５１３５）および１２％Ｃｒ鋼からなるドリルパイプ用
ツールジヨイントの外面に厚さ８０μｍの皮膜を形成し
た。そして、このようにして調製した本発明ソールジヨ
イントおよび皮膜を形成しなかった第１表から明らかな
ように、本発明ツールジヨイントの外面は、比較ツール
ジヨイントの外面に比べて、耐摩耗性に著しく優れてい
ることがわかる。WC-12%Co powder was added to carbon steel (API 5AX
A film with a thickness of 80 μm was formed on the outer surface of a drill pipe tool joint made of 5135) and 12% Cr steel. As is clear from the sole joints of the present invention prepared in this way and Table 1 on which no film was formed, the outer surface of the tool joints of the present invention was more resistant to wear than the outer surface of the comparative tool joints. It can be seen that the quality is significantly superior.
次に、皮膜の材質をＴｉＯ□にした以外は全て上記実施
例と同一にして、本発明ツールジヨイントおよび比較ツ
ールジヨイントを調製した。そして、これらのツールジ
ヨイントを上記実施例において実施しだ摩耗試験と同一
の試験に供した。この試験結果を第２表に示す。Next, a tool joint of the present invention and a comparative tool joint were prepared in the same manner as in the above example except that the material of the film was TiO□. These tool joints were then subjected to the same test as the indentation wear test conducted in the above example. The test results are shown in Table 2.
第 ２ 表
第１図は、この発明のドリルパイプ用ツールジヨイント
の一実施態様を示す部分断面図である。Table 2 FIG. 1 is a partial sectional view showing one embodiment of the drill pipe tool joint of the present invention.
ｌ・・ツールジヨイント、 ＩＡ・・ジヨイント本体、
ＩＢ・皮膜。L...Tool joint, IA...Joint body,
IB/film.
Claims (1)
が形成されていることを特徴とするドリルパイプ用ツー
ルジョイント。1. A drill pipe tool joint characterized by having a coating made of ceramics or cermet formed on its outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20790088A JPH0258693A (en) | 1988-08-22 | 1988-08-22 | Tool joint for drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20790088A JPH0258693A (en) | 1988-08-22 | 1988-08-22 | Tool joint for drill pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0258693A true JPH0258693A (en) | 1990-02-27 |
Family
ID=16547433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20790088A Pending JPH0258693A (en) | 1988-08-22 | 1988-08-22 | Tool joint for drill pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0258693A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5696866A (en) * | 1993-01-08 | 1997-12-09 | Srt, Inc. | Method and apparatus for eliminating television commercial messages |
| US5987210A (en) * | 1993-01-08 | 1999-11-16 | Srt, Inc. | Method and apparatus for eliminating television commercial messages |
| US5999688A (en) * | 1993-01-08 | 1999-12-07 | Srt, Inc. | Method and apparatus for controlling a video player to automatically locate a segment of a recorded program |
| US7110658B1 (en) | 1993-01-08 | 2006-09-19 | Televentions, Llc | Method and apparatus for eliminating television commercial messages |
-
1988
- 1988-08-22 JP JP20790088A patent/JPH0258693A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5696866A (en) * | 1993-01-08 | 1997-12-09 | Srt, Inc. | Method and apparatus for eliminating television commercial messages |
| US5987210A (en) * | 1993-01-08 | 1999-11-16 | Srt, Inc. | Method and apparatus for eliminating television commercial messages |
| US5999688A (en) * | 1993-01-08 | 1999-12-07 | Srt, Inc. | Method and apparatus for controlling a video player to automatically locate a segment of a recorded program |
| US7110658B1 (en) | 1993-01-08 | 2006-09-19 | Televentions, Llc | Method and apparatus for eliminating television commercial messages |
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