CN106437552A - High-sealing drill pipe joint - Google Patents
High-sealing drill pipe joint Download PDFInfo
- Publication number
- CN106437552A CN106437552A CN201611001508.9A CN201611001508A CN106437552A CN 106437552 A CN106437552 A CN 106437552A CN 201611001508 A CN201611001508 A CN 201611001508A CN 106437552 A CN106437552 A CN 106437552A
- Authority
- CN
- China
- Prior art keywords
- sealing
- male connection
- cylinder section
- section
- sealing cylinder
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
Abstract
The invention relates to a high-sealing drill pipe joint. The outer diameter of a sealing cylindrical section of an outer thread joint is larger than the inner diameter of a sealing cylindrical section of an inner thread joint; a basal cylindrical section of the outer thread joint is in clearance fit with a boring section of the inner thread joint; the sealing cylindrical section of the outer thread joint is in interference fit with the sealing cylindrical section of the inner thread joint; an annular lubricating groove is formed in the sealing cylindrical section of the outer thread joint; the width of the annular lubricating groove formed in the outer thread joint ranges from 1.5 mm to 2.5 mm, the depth of the annular lubricating groove ranges from 0.10 mm to 0.65 mm, and the spacing distance of the annular lubricating groove ranges from 2 mm to 4 mm; the outer diameter of the sealing cylindrical section of the outer thread joint is 0.02-0.22 mm larger than the inner diameter of the sealing cylindrical section of the inner thread joint. The high-sealing drill pipe joint has the advantages that multiple mutually-independent metal-metal sealing faces are formed after the drill pipe joint is obtained through connection, and the sealing property is good; even though the drill pipe joint is in a high tensile stress state, the contact pressure and the contact area of the metal-metal sealing faces among the cylindrical faces are not affected, and the good sealing property can still be kept.
Description
Technical field
The present invention relates to drilling tool field is and in particular to a kind of high sealing tool joint.
Background technology
Drilling rod is the important tool in oil and gas exploration and exploitation, and drill pipe joint is formed by the connection of tool joint
Whole drill string.Drill string is the circulation canal of cleaner for high-pressure drilling fluid, and therefore, tool joint will have enough sealing properties.Conventional
API mono- torque shoulder tool joint and the non-API special drill pipe joint of dual stage shoulder, its sealing principle is all by torque shoulder face
Contact stress formed sealing surface.When the contact in torque shoulder face is not enough, high-pressure slurry will pierce through from sealing shoulder face,
Thus leading to the puncture of tool joint to be lost efficacy.When tension is born in tool joint, the contact in torque shoulder face can be with
The increase of the tensile stress born and reduce, when tensile stress reaches a critical value, contact stress on torque shoulder face will
It is reduced to the sealing property being not enough to maintain tool joint, thus leading to the seal failure of joint.Existing high sealing screw thread connects
Head generally improves the sealing property of joint by being machined with the sealing surface of one section of taper in external screw thread nose, due to taper surface
Contact contact with the second torque shoulder face mutually restricts, in actual use it is difficult to ensure that sealing surface and the second torque shoulder face
Be simultaneously in good contact, that is, can not effectively while ensure drilling rod connecting head height torsional property and high sealing performance.Additionally,
Tensile stress state, the contact of conical seal (contact) face reduces as well as in the increasing of bond pull stress, when drilling rod bears
Tensile stress reaches a critical duration, and the sealing function of conical seal (contact) face lost efficacy.
Content of the invention
It is an object of the invention to for solving the deficiencies in the prior art, and a kind of high sealing tool joint is provided.
The new technical scheme of the present invention is：A kind of high sealing tool joint, including female adapter and male connection, institute
The female adapter stated includes main torque shoulder face, bore hole section, internal thread segment, sealing cylinder section；Male connection includes main torsion
Square circular bead surface, base cylinder section, external thread section, sealing cylinder section.The external diameter of the sealing cylinder section of described male connection is more than
The internal diameter of female adapter sealing cylinder section；Male connection base cylinder section is intersegmental with female adapter bore hole to join for gap
Close；Male connection sealing cylinder section and female adapter sealing cylinder intersegmental for interference fit；Male connection sealing cylinder
There is annular lubricant groove in section；The annular lubricant well width of male connection is 1.5-2.5mm；The annular lubricant groove of male connection
Depth is 0.10-0.65mm；The spacing of male connection annular lubricant groove is 2-4mm.Outside male connection sealing cylinder section
Footpath 0.02-0.22mm bigger than the internal diameter of female adapter sealing cylinder section.
The annular lubricant well width of described male connection is 2.5mm.
The annular lubricant groove depth of described male connection is 0.42mm.
The annular lubricant separation of described male connection is 3.5mm.
Described male connection sealing cylinder section external diameter 0.08mm bigger than the internal diameter of female adapter sealing cylinder section.
Described male connection sealing cylinder section and female adapter sealing cylinder section form multiple mutual upon connection
The independent metal to metal seal face being sealed by contact.
The invention has the beneficial effects as follows：This tool joint forms multiple separate metal to metal seal upon connection
Face, sealing is excellent, even if being under high tensile stress state in tool joint, between the metal to metal seal face on the face of cylinder
Contact and contact area are unaffected, remain to keep good sealing property.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the partial enlarged drawing of the male connection sealing cylinder section of the present invention.
Wherein：1 be male connection, torque shoulder face based on 11,12 be base cylinder section, 13 be external thread section, 14 be
Sealing cylinder section, 15 be annular lubricant groove；2 be female adapter, torque shoulder face based on 21,22 be bore hole section, 23 be interior spiral shell
Line section, 24 be sealing cylinder section.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
A kind of high sealing tool joint, including female adapter 2 and male connection 1, described female adapter 2 includes
Main torque shoulder face 21, bore hole section 22, internal thread segment 23, sealing cylinder face 24；Male connection 1 includes main torque shoulder face
11, base cylinder section 12, external thread section 13, sealing cylinder section 14；The external diameter of the sealing cylinder section 14 of described male connection 1 is big
Internal diameter in female adapter 2 sealing cylinder section 24；Male connection 1 base cylinder section 12 and female adapter 2 bore hole section 22
Between for gap cooperation；It is interference fit between male connection 1 sealing cylinder section 14 and female adapter 2 sealing cylinder section 24；Outward
It is machined with annular lubricant groove 15 in nipple 1 sealing cylinder section 14；The width of male connection 1 annular lubricant groove 15 is 1.5-
2.5mm；The depth of male connection 1 annular lubricant groove 15 is 0.10-0.65mm；Between male connection 1 annular lubricant groove 15
Away from for 2-4mm；Male connection 1 sealing cylinder section 14 external diameter 0.02- bigger than the internal diameter of female adapter 2 sealing cylinder section 24
0.22mm.
The width of described male connection 1 annular lubricant groove 15 is 2.5mm.
The depth of described male connection 1 annular lubricant groove 15 is 0.42mm.
The spacing of described male connection 1 annular lubricant groove 15 is 3.5mm.
Described male connection 1 sealing cylinder section, 14 external diameters are bigger than the internal diameter of female adapter 2 sealing cylinder section 24
0.08mm.
Described male connection sealing cylinder section 14 and female adapter sealing cylinder section 24 form multiple upon connection
The separate metal to metal seal face being sealed by contact.
Implement parameter using above, internal and external screw thread joint in upper button, externally threaded sealing cylinder section 14 outer surface with interior
The sealing cylinder section 24 inner surface contact of screw thread, forming interference fit, producing the contact stress of radial direction in contact surface, thus being formed
Sealing surface.Thread compound in the annular lubricant groove in male connection sealing cylinder face will be lubricated to sealing cylinder surface, keep away
Exempted from contact surface because the frictional heat that interference fit produces lead to contact surface bonding risk.Screwing with screw thread, externally threaded
Sealing cylinder section outer surface is increased with the contact surface of sealing cylinder section 24 inner surface of internal thread, forms multiple separate gold
Genus-metallic sealing section, when torque wrench moment value reaches preset value, completes button.
Implement parameter using above, internal and external screw thread joint after upper button, externally threaded sealing cylinder section 14 and internal thread
Sealing cylinder section 24 inner surface will form multiple separate metal to metal seal faces being sealed by contact,
Greatly improve sealing intensity and the sealing reliability of tool joint.
Claims (6)
1. a kind of high sealing tool joint, including female adapter（2）And male connection（1）It is characterised in that：Described is interior
Nipple（2）Including main torque shoulder face（21）, bore hole section（22）, internal thread segment（23）, sealing cylinder face（24）；External screw thread
Joint (1) includes main torque shoulder face (11), base cylinder section (12), external thread section (13), sealing cylinder section (14)；Described outer
The external diameter of the sealing cylinder section (14) of nipple (1) is more than the internal diameter of female adapter (2) sealing cylinder section (24)；External screw thread
Coordinate for gap between joint (1) base cylinder section (12) and female adapter (2) bore hole section (22)；Male connection (1) seals
It is interference fit between cylindrical section (14) and female adapter (2) sealing cylinder section (24)；Male connection (1) sealing cylinder section
(14) it is machined with annular lubricant groove (15) on；Male connection (1) annular lubricant groove（15）Width be 1.5-2.5mm；Outer spiral shell
Line joint (1) annular lubricant groove（15）Depth be 0.10-0.65mm；Male connection (1) annular lubricant groove（15）Spacing
For 2-4mm；Male connection (1) sealing cylinder section (14) external diameter is bigger than the internal diameter of female adapter (2) sealing cylinder section (24)
0.02-0.22mm.
2. a kind of high sealing tool joint according to claim 1 it is characterised in that：Described male connection (1) ring
The width of shape lubrication groove (15) is 2.5mm.
3. a kind of high sealing tool joint according to claim 1 it is characterised in that：Described male connection (1) ring
The depth of shape lubrication groove (15) is 0.42mm.
4. a kind of high sealing tool joint according to claim 1 it is characterised in that：Described male connection (1) ring
The spacing of shape lubrication groove (15) is 3.5mm.
5. a kind of high sealing tool joint according to claim 1 it is characterised in that：Described male connection (1) is close
Envelope cylindrical section (14) external diameter 0.08mm bigger than the internal diameter of female adapter (2) sealing cylinder section (24).
6. a kind of high sealing tool joint according to claim 1 it is characterised in that：Described male connection sealing circle
Shell of column（14）With female adapter sealing cylinder section（24）Form multiple separate carrying out by contact upon connection
The metal to metal seal face of sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611001508.9A CN106437552A (en) | 2016-11-15 | 2016-11-15 | High-sealing drill pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611001508.9A CN106437552A (en) | 2016-11-15 | 2016-11-15 | High-sealing drill pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106437552A true CN106437552A (en) | 2017-02-22 |
Family
ID=58207797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611001508.9A Pending CN106437552A (en) | 2016-11-15 | 2016-11-15 | High-sealing drill pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106437552A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU203057U1 (en) * | 2020-07-11 | 2021-03-19 | Общество с ограниченной ответственностью "ТЕХНОМАШ" | THREADED DRILL PIPE CONNECTION |
| CN116592147A (en) * | 2023-07-13 | 2023-08-15 | 欧尚元智能装备有限公司 | Valve opening and closing piece and straight-through stop valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2764922Y (en) * | 2005-01-31 | 2006-03-15 | 宝山钢铁股份有限公司 | Double shoulder metal hermetic sealing drill pipe joint |
| CN201013257Y (en) * | 2007-02-16 | 2008-01-30 | 陆金福 | Oil pipe coupling |
| CN201826771U (en) * | 2010-06-25 | 2011-05-11 | 上海海隆石油钻具有限公司 | Air-tight anti-gluing drill pipe connector |
| CN202645462U (en) * | 2012-05-29 | 2013-01-02 | 天津德华石油装备制造有限公司 | Coupling |
| CN203729903U (en) * | 2013-12-20 | 2014-07-23 | 东营威玛石油钻具有限公司 | Extremely-high anti-torsional thread connection device |
| CN203925326U (en) * | 2014-06-19 | 2014-11-05 | 上海海隆石油钻具有限公司 | The antitorque high pressure sealing drilling rod joint of height for oil gas drilling |
| CN105422019A (en) * | 2015-12-09 | 2016-03-23 | 中国石油集团石油管工程技术研究院 | Rapid buckling threaded structure for expansion pipe in large expansion rate and machining and preparing method |
| CN206346714U (en) * | 2016-11-15 | 2017-07-21 | 东营威玛石油钻具有限公司 | A kind of high sealing tool joint |
-
2016
- 2016-11-15 CN CN201611001508.9A patent/CN106437552A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2764922Y (en) * | 2005-01-31 | 2006-03-15 | 宝山钢铁股份有限公司 | Double shoulder metal hermetic sealing drill pipe joint |
| CN201013257Y (en) * | 2007-02-16 | 2008-01-30 | 陆金福 | Oil pipe coupling |
| CN201826771U (en) * | 2010-06-25 | 2011-05-11 | 上海海隆石油钻具有限公司 | Air-tight anti-gluing drill pipe connector |
| CN202645462U (en) * | 2012-05-29 | 2013-01-02 | 天津德华石油装备制造有限公司 | Coupling |
| CN203729903U (en) * | 2013-12-20 | 2014-07-23 | 东营威玛石油钻具有限公司 | Extremely-high anti-torsional thread connection device |
| CN203925326U (en) * | 2014-06-19 | 2014-11-05 | 上海海隆石油钻具有限公司 | The antitorque high pressure sealing drilling rod joint of height for oil gas drilling |
| CN105422019A (en) * | 2015-12-09 | 2016-03-23 | 中国石油集团石油管工程技术研究院 | Rapid buckling threaded structure for expansion pipe in large expansion rate and machining and preparing method |
| CN206346714U (en) * | 2016-11-15 | 2017-07-21 | 东营威玛石油钻具有限公司 | A kind of high sealing tool joint |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU203057U1 (en) * | 2020-07-11 | 2021-03-19 | Общество с ограниченной ответственностью "ТЕХНОМАШ" | THREADED DRILL PIPE CONNECTION |
| CN116592147A (en) * | 2023-07-13 | 2023-08-15 | 欧尚元智能装备有限公司 | Valve opening and closing piece and straight-through stop valve |
| CN116592147B (en) * | 2023-07-13 | 2023-10-03 | 欧尚元智能装备有限公司 | Valve opening and closing piece and straight-through stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |
|
| WD01 | Invention patent application deemed withdrawn after publication |