CN203257339U - Connecting structure for aluminum alloy drill rod pipe body and steel connectors - Google Patents
Connecting structure for aluminum alloy drill rod pipe body and steel connectors Download PDFInfo
- Publication number
- CN203257339U CN203257339U CN2013202171049U CN201320217104U CN203257339U CN 203257339 U CN203257339 U CN 203257339U CN 2013202171049 U CN2013202171049 U CN 2013202171049U CN 201320217104 U CN201320217104 U CN 201320217104U CN 203257339 U CN203257339 U CN 203257339U
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- pipe body
- steel joint
- drill pipe
- alloy drill
- aluminium alloy
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Abstract
The utility model relates to a connecting structure for an aluminum alloy drill rod pipe body and steel connectors. The connecting structure comprises the aluminum alloy drill rod pipe body, the two ends of the aluminum alloy drill rod pipe body is connected with the female steel connector and the male steel connector, a circular groove is arranged in the position between the inner conical surface of the female steel connector and a connection transition shoulder of the female steel connector and provided with a metal ring, and the female steel connector is in interference fit with the aluminum alloy drill rod pipe body through the female connector metal ring arranged in the female connector circular groove and the outer conical surface of the connecting end of the female steel connector of the aluminum alloy drill rod pipe body. A circular groove is arranged in the position between the inner conical surface of the male steel connector and a connection transition shoulder of the male steel connector, a metal ring is arranged in the circular groove specially, and the male steel connecter is in interference fit with the aluminum alloy drill rod pipe body through the male connector metal ring arranged in the male connector circular groove and the outer conical surface of the connecting end of the male steel connector of the aluminum alloy drill rod pipe body. According to the connecting structure, the problem that a connecting structure in ISO15546 is prone to tire and corrode is solved, and application of an aluminum alloy drill rod in oil and gas exploitation is guaranteed.
Description
Technical field
The utility model relates to drilling rod, and is particularly a kind of for aluminium alloy drill pipe body and steel joint connecting structure.
Background technology
Along with the development of oil and gas exploration technology and the expansion of Exploration Domain, exploitation deep layer resource, the quantity of the complex working condition environment exploration and development wells such as ultradeep well, directional well, high corrosive medium well increases fast, and oil and gas exploitation is proposed Secretary with drilling rod.The problem such as often run at present the friction of steel drilling rod hot tearing, hydrogen embrittlement, stress corrosion fracture in the probing exploitation of complex working condition, bit speed is low and efficient is low.
Adopt the aluminium drill pipe of non-steel material to address the above problem, use aluminium drill pipe can improve bit speed and efficient, shorten making a trip and the down-hole accident processing time; Drilling tool weight saving extended rope service-life, reduced the load of hoisting system of rig, the circulating system; The aluminium drill pipe corrosion resistance is good, can guarantee the high H of containing
2S and CO
2The exploration and development of oil gas field; Reduce the power consumption of borer system, extended application life; The wammel that has improved existing rig is dark.
At present, the aluminium drill pipe form of structure for oil and gas exploitation mainly contains: band steel joint aluminium drill pipe and all aluminium alloy drilling rod.According to ISO15546 aluminium drill pipe standard, band steel joint aluminium drill pipe divides four kinds of jackrod structure forms: thicken aluminium drill pipe, steel laced belt protector external upset aluminium drill pipe in thickening aluminium drill pipe, steel joint external upset aluminium drill pipe, steel laced belt protector in the steel joint.Four kinds of form of structure with being connected as shown in Figure 1 between the steel joint of steel joint aluminium drill pipe and aluminium alloy drill pipe body.
To be connected with fixed axoid by screw thread between aluminium alloy drill pipe body and steel joint, because the modulus of elasticity of steel joint and the modulus of elasticity of aluminium alloy drill pipe body material differ larger, aluminium drill pipe due to repeatedly drawn, turned round, the fluctuating load such as curved, pressure, can produce fatigue failure at the fixed axoid end that connects.In standard, the outer transition of internal thread steel joint and aluminium alloy drill pipe body junction is 90 ° or 18 ° of shoulders, during drilling well, outer shroud idle loop mud or circulated air are hampered or flow at the transition circular bead surface and change, can produce serious eddy current at the transition shoulder, because the aluminium alloy drill pipe body material is softer, evorsion is serious, causes aluminium drill pipe to lose efficacy at this transition shoulder place.
Summary of the invention
It is a kind of for aluminium alloy drill pipe body and steel joint connecting structure that the purpose of this utility model is to provide, utilize this syndeton can overcome the problem that tired defective, erosion etc. easily occur the related syndeton of ISO15546, thereby guaranteed the application of aluminium drill pipe in oil and gas exploitation.
For achieving the above object, the technical solution of the utility model is:
A kind of for aluminium alloy drill pipe body and steel joint connecting structure, it comprises aluminium alloy drill pipe body and two joints; It is characterized in that: one of them joint is that two ends are all the internal thread steel joints of internal thread, and another joint is that an end is that the internal thread other end is externally threaded external screw thread steel joint; Be connected internal thread and be connected in described aluminium alloy drill pipe body two ends with external screw thread steel joint with internal thread steel joint by external screw thread; The internal thread steel joint inner conical surface that is connected with aluminium alloy drill pipe body is provided with the female adapter cannelure in internal thread steel joint connection transition shoulder; Be provided with the female adapter metal ring in described female adapter cannelure; Described internal thread steel joint and aluminium alloy drill pipe body are interference fit by female adapter metal ring and the aluminium alloy drill pipe body internal thread steel joint link male cone (strobilus masculinus) that is provided with in the female adapter cannelure; The external screw thread steel joint inner conical surface that is connected with aluminium alloy drill pipe body is provided with the male connection cannelure in external screw thread steel joint connection transition shoulder; Be provided with the male connection metal ring in described male connection cannelure; Described external screw thread steel joint and aluminium alloy drill pipe body are interference fit by male connection metal ring and the aluminium alloy drill pipe body external screw thread steel joint link male cone (strobilus masculinus) that is provided with in the male connection cannelure.
Described for aluminium alloy drill pipe body and steel joint connecting structure, it is characterized in that: described internal thread steel joint connects the transition shoulder and internal thread steel joint axis angle is 18 °.
Described for aluminium alloy drill pipe body and steel joint connecting structure, it is characterized in that: described female adapter metal ring inner surface is consistent with aluminium alloy drill pipe body internal thread steel joint link male cone (strobilus masculinus) tapering, and female adapter metal ring exposed surface and female adapter metal ring axis angle are 18 °.
Described for aluminium alloy drill pipe body and steel joint connecting structure, it is characterized in that: described male connection metal ring inner surface is consistent with aluminium alloy drill pipe body external screw thread steel joint link male cone (strobilus masculinus) tapering.
The modulus of elasticity of the material of described female adapter metal ring and male connection metal ring is between the modulus of elasticity of internal thread steel joint and external screw thread steel joint material and aluminium alloy drill pipe body material, as copper, and copper-based alloy material.
Because being used for the petroleum gas drilling, the utility model adopted technique scheme with aluminium alloy drill pipe body and steel joint connecting structure, differ between the position that fatigue failure easily occurs larger steel joint and aluminium alloy drill pipe body at two modulus of elasticity and add material such as the copper that modulus of elasticity is placed in the middle, can effectively improve the anti-fatigue performance of aluminium drill pipe.When preventing drilling well by the outer transition shoulder structure that changes internal thread steel joint and aluminium alloy drill pipe body junction, the erosion of outer shroud idle loop fluid to the aluminium alloy drill pipe body junction, greatly reduce the failure accidents that aluminium drill pipe occurs due to erosion.
Description of drawings
Fig. 1 is the syndeton schematic diagram between steel joint and aluminium alloy drill pipe body in iso standard.
Fig. 2 is the utility model generalized section.
Fig. 3 is A section enlarged drawing in Fig. 2.
Fig. 4 is B section enlarged drawing in Fig. 2.
The specific embodiment
As extremely shown in Figure 4 in Fig. 2; The utility model comprises that with steel joint aluminium drill pipe syndeton two ends are all the internal thread steel joints 1 of internal thread for the petroleum gas drilling; One end is that the internal thread other end is externally threaded external screw thread steel joint 2 and is connected end and is connected the other end with internal thread steel joint internal thread 11 to be connected two ends with external screw thread steel joint internal thread 21 are externally threaded aluminium alloy drill pipe bodies 3; It is characterized in that: the described internal thread steel joint inner conical surface 12 that is connected with aluminium alloy drill pipe body 3 is provided with female adapter cannelure 14 in internal thread steel joint connection transition shoulder 13; In described female adapter cannelure, 14 are provided with female adapter metal ring 4; Described internal thread steel joint 1 is interference fit by the female adapter metal ring 4 that is provided with in female adapter cannelure 14 with aluminium alloy drill pipe body internal thread steel joint link male cone (strobilus masculinus) 31 with aluminium alloy drill pipe body 3.
The external screw thread steel joint inner conical surface 22 that described aluminium alloy drill pipe body 3 connects is provided with male connection cannelure 24 in external screw thread steel joint connection transition shoulder 23; Be provided with male connection metal ring 5 in described male connection cannelure 24; Described external screw thread steel joint 2 is interference fit by the male connection metal ring 5 that is provided with in male connection cannelure 24 with aluminium alloy drill pipe body external screw thread steel joint link male cone (strobilus masculinus) 32 with aluminium alloy drill pipe body 3.
It is 18 ° with internal thread steel joint axis 15 angles that described internal thread steel joint connects transition shoulder 13.
Described female adapter metal ring inner surface 41 is consistent with aluminium alloy drill pipe body internal thread steel joint link male cone (strobilus masculinus) 31 taperings, and female adapter metal ring exposed surface 42 is 18 ° with female adapter metal ring axis 43 angles.
Described male connection metal ring inner surface 51 is consistent with aluminium alloy drill pipe body external screw thread steel joint link male cone (strobilus masculinus) 32 taperings.
The modulus of elasticity of the material of described female adapter metal ring 4 and male connection metal ring 5 is between the modulus of elasticity of internal thread steel joint 1 and external screw thread steel joint 2 materials and aluminium alloy drill pipe body 3 materials, as copper, and copper-based alloy material.
Being only preferred embodiment of the present utility model in sum, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all should be technology category of the present utility model.
Claims (4)
1. one kind is used for aluminium alloy drill pipe body and steel joint connecting structure, and it comprises aluminium alloy drill pipe body (3) and two joints; It is characterized in that: one of them joint is that two ends are all the internal thread steel joints (1) of internal thread, and another joint is that an end is that the internal thread other end is externally threaded external screw thread steel joint (2); Described aluminium alloy drill pipe body (3) two ends are connected 2 with internal thread steel joint (1) with external screw thread steel joint by external screw thread) internal thread (11,21) be connected; The internal thread steel joint inner conical surface (12) that is connected with aluminium alloy drill pipe body (3) is provided with female adapter cannelure (14) in internal thread steel joint connection transition shoulder (13); In described female adapter cannelure, (14) are provided with female adapter metal ring (4); Described internal thread steel joint (1) is interference fit by the female adapter metal ring (4) that is provided with in female adapter cannelure (14) with aluminium alloy drill pipe body internal thread steel joint link male cone (strobilus masculinus) (31) with aluminium alloy drill pipe body (3); The external screw thread steel joint inner conical surface (22) that is connected with aluminium alloy drill pipe body (3) is provided with male connection cannelure (24) in external screw thread steel joint connection transition shoulder (23); Be provided with male connection metal ring (5) in described male connection cannelure (24); Described external screw thread steel joint (2) is interference fit by the male connection metal ring (5) that is provided with in male connection cannelure (24) with aluminium alloy drill pipe body external screw thread steel joint link male cone (strobilus masculinus) (32) with aluminium alloy drill pipe body (3).
2. according to claim 1 for aluminium alloy drill pipe body and steel joint connecting structure, it is characterized in that: it is 18 ° with internal thread steel joint (1) axis angle that described internal thread steel joint connects transition shoulder (13).
3. according to claim 1 for aluminium alloy drill pipe body and steel joint connecting structure, it is characterized in that: described female adapter metal ring (4) inner surface is consistent with aluminium alloy drill pipe body internal thread steel joint link male cone (strobilus masculinus) tapering, and female adapter metal ring (4) exposed surface and female adapter metal ring (4) axis angle are 18 °.
4. according to claim 1 for aluminium alloy drill pipe body and steel joint connecting structure, it is characterized in that: described male connection metal ring (5) inner surface is consistent with aluminium alloy drill pipe body external screw thread steel joint link male cone (strobilus masculinus) tapering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202171049U CN203257339U (en) | 2013-04-26 | 2013-04-26 | Connecting structure for aluminum alloy drill rod pipe body and steel connectors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202171049U CN203257339U (en) | 2013-04-26 | 2013-04-26 | Connecting structure for aluminum alloy drill rod pipe body and steel connectors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257339U true CN203257339U (en) | 2013-10-30 |
Family
ID=49469916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202171049U Expired - Lifetime CN203257339U (en) | 2013-04-26 | 2013-04-26 | Connecting structure for aluminum alloy drill rod pipe body and steel connectors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203257339U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108000A (en) * | 2013-12-19 | 2014-10-22 | 吉林大学 | Internal cooling system for aluminum alloy drill pipe joint hot assembling |
| CN104895504A (en) * | 2015-05-14 | 2015-09-09 | 东营威玛石油钻具有限公司 | Steel connector and aluminum alloy pipe body threaded connection type light drill rod |
| CN105257226A (en) * | 2015-10-30 | 2016-01-20 | 天津精工石油专用管件有限公司 | Seal pipe connecting assembly for nonmetallic pipelines |
| US10036213B2 (en) | 2014-12-05 | 2018-07-31 | China National Petroleum Corporation | Connection structure between pipe body and joint of aluminum alloy drill pipe |
| CN109236194A (en) * | 2018-10-22 | 2019-01-18 | 中国石油天然气集团有限公司 | A kind of steel connector titanium alloy drilling rod |
| US11060652B2 (en) | 2017-12-22 | 2021-07-13 | ASC Engineered Solutions, LLC | Malleable press fittings |
| CN114396235A (en) * | 2021-12-22 | 2022-04-26 | 上海海隆石油管材研究所 | Titanium alloy drill rod connecting structure with strip steel joints at two ends |
-
2013
- 2013-04-26 CN CN2013202171049U patent/CN203257339U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108000A (en) * | 2013-12-19 | 2014-10-22 | 吉林大学 | Internal cooling system for aluminum alloy drill pipe joint hot assembling |
| CN104108000B (en) * | 2013-12-19 | 2016-10-19 | 吉林大学 | Aluminium drill pipe joint heat assembles internal cooling system |
| US10036213B2 (en) | 2014-12-05 | 2018-07-31 | China National Petroleum Corporation | Connection structure between pipe body and joint of aluminum alloy drill pipe |
| CN104895504A (en) * | 2015-05-14 | 2015-09-09 | 东营威玛石油钻具有限公司 | Steel connector and aluminum alloy pipe body threaded connection type light drill rod |
| CN105257226A (en) * | 2015-10-30 | 2016-01-20 | 天津精工石油专用管件有限公司 | Seal pipe connecting assembly for nonmetallic pipelines |
| CN105257226B (en) * | 2015-10-30 | 2018-02-16 | 天津精工石油专用管件有限公司 | A kind of nonmetallic pipeline seal pipe connection component |
| US11060652B2 (en) | 2017-12-22 | 2021-07-13 | ASC Engineered Solutions, LLC | Malleable press fittings |
| CN109236194A (en) * | 2018-10-22 | 2019-01-18 | 中国石油天然气集团有限公司 | A kind of steel connector titanium alloy drilling rod |
| CN114396235A (en) * | 2021-12-22 | 2022-04-26 | 上海海隆石油管材研究所 | Titanium alloy drill rod connecting structure with strip steel joints at two ends |
| CN114396235B (en) * | 2021-12-22 | 2024-05-24 | 上海海隆石油管材研究所 | Titanium alloy drill rod connecting structure with steel connectors at two ends |
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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: 20131030 |
|
| CX01 | Expiry of patent term |