CN110593774A - Sealing drill rod external thread structure - Google Patents
Sealing drill rod external thread structure Download PDFInfo
- Publication number
- CN110593774A CN110593774A CN201911047395.XA CN201911047395A CN110593774A CN 110593774 A CN110593774 A CN 110593774A CN 201911047395 A CN201911047395 A CN 201911047395A CN 110593774 A CN110593774 A CN 110593774A
- Authority
- CN
- China
- Prior art keywords
- thread
- external thread
- sealing
- sealing surface
- end surface
- 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
- E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
Abstract
The invention relates to an external thread structure of a sealing drill rod, which comprises an external thread body, thread bottom surface sealing surfaces and thread end surface sealing surfaces at two ends of the external thread body, wherein the external thread body is not provided with a thread sharp angle, the thread pitch of the external thread body is 8.47mm, the effective length of a thread is 42.9mm, the total length of the thread is 44.35(+0.02-0.03) mm, the thread taper is 1-2', the width of the end surface of the external thread body is 4.98 (+ 0.18-0.20) mm, the depth of the thread bottom surface sealing surface is 0.53mm, the included angle of the thread bottom surface sealing surface is 15 degrees, the included angle of the thread end surface sealing surface is 15 degrees. The advantages of the invention please supplement: structural design is reasonable, can effectively improve and interior threaded connection stability, improves the whole result of use of leakproofness drilling rod, has prolonged life, has improved efficiency, has reduced use cost.
Description
Technical Field
The invention relates to an external thread structure of a sealing drill rod.
Background
The geological exploration of the invention refers to the exploration and detection of geology, the determination of a proper bearing stratum, the determination of a foundation type and the calculation of foundation parameters according to the foundation bearing capacity of the bearing stratum. The method can find the mineral deposit with industrial significance in mineral product general survey, provides mineral reserve and geological data required by mine construction design for finding out the quality and quantity of the mineral product and the technical conditions of mining and utilization, and carries out investigation and research work on geological conditions such as rocks, strata, structures, mineral products, hydrology, landforms and the like in a certain area. Geological exploration requires the use of a sealed drill pipe, which is an important component of a drilling tool.
The sealing drill rod external thread structure in the prior art has the phenomenon of unreasonable structural design, so that the stability is insufficient when the sealing drill rod external thread structure is connected with an internal thread, the use effect is influenced, the service life is short, the use cost is high, and the production requirement cannot be met.
Disclosure of Invention
The invention provides a sealing drill rod external thread structure, aiming at overcoming the defects in the prior art, realizing reasonable structural design, improving the use effect and prolonging the service life.
The technical solution of the invention is as follows: the external thread structure of the sealing drill rod comprises an external thread body, thread bottom surface sealing surfaces and thread end surface sealing surfaces at two ends of the external thread body, wherein the external thread body is not provided with a thread sharp corner, the thread pitch of the external thread body is 8.47mm, the effective length of a thread is 42.9mm, the total length of the thread is 44.35(+0.02-0.03) mm, the thread taper is 1 degree 2', the width of the end face of the external thread body is 4.98 (+ 0.18-0.20) mm, the depth of the sealing surface of the bottom face of the thread is 0.53mm, the included angle of the sealing surface of the bottom face of the thread is 15 degrees, the included angle of the sealing surface of the end face of the thread is 15 degrees, the thickness of the thread profile is 0.876-0.902 mm, the diameter of the sealing surface of the end face of the thread is 81.29 +/-0.04 mm, the diameter of a cylinder at the top of the external thread body is 83.07 +/-0.01 mm, the diameter of the sealing surface of the bottom face of the thread is 84.68(+ 0.016-0..
Preferably, the fillet radius of the included angle of the sealing surface of the thread bottom surface is 0.38 +/-0.05 mm, and the fillet radius of the included angle of the sealing surface of the thread end surface is 0.51 +/-0.05 mm.
The advantages of the invention please supplement: structural design is reasonable, can effectively improve and interior threaded connection stability, improves the whole result of use of leakproofness drilling rod, has prolonged life, has improved efficiency, has reduced use cost.
Drawings
Fig. 1 is a schematic structural diagram of the external thread structure of the sealing drill rod of the invention.
FIG. 2 is an enlarged partial view of the threads of the externally threaded body of FIG. 1.
In the figure, 1 is an external thread body, 2 is a thread effective length, 21 is a thread full length, 22 is a thread taper, 3 is a thread bottom surface sealing surface, 31 is a thread bottom surface sealing surface included angle, 4 is a thread end surface sealing surface, 41 is a thread end surface sealing surface included angle, 5 is a thread profile thickness, 6 is an external thread body end surface width, 7 is a thread bottom surface sealing surface depth, 8 is a thread bottom surface sealing surface included angle fillet radius, 9 is a thread end surface sealing surface included angle fillet radius, 10 is a thread end surface sealing surface diameter, 11 is a cylindrical diameter of the top of the external thread body, 12 is a thread bottom surface sealing surface diameter, and 13 is a circular diameter of the highest point of the thread bottom surface sealing surface.
Detailed Description
The present invention will be described in further detail with reference to examples and specific embodiments.
As shown in figures 1 and 2, the external thread structure of the sealing drill rod comprises a thread bottom surface sealing surface 3 and a thread end surface sealing surface 4 at two ends of an external thread body 1 and the external thread body 1, wherein no thread sharp corner (removed) is formed on the external thread body 1, the thread pitch of the external thread body 1 is 8.47mm, the effective length of the thread is 42.9mm, the total length of the thread is 44.35(+0.02-0.03) mm, the thread taper is 1 degree 2', the end surface width of the external thread body 1 is 4.98 (+ 0.18-0.20) mm, the depth of the thread bottom surface sealing surface 3 is 0.53mm, the included angle of the thread bottom surface sealing surface is 15 degrees, the included angle of the thread bottom surface sealing surface is 31 fillet radius of 0.38 +/-0.05 mm, the included angle of the thread end surface sealing surface 4 is 15 degrees, the included angle of the thread end surface sealing surface is 41 fillet radius of 0.51 +/-0.05 mm, the thread profile thickness is 5 of 0.876-, the diameter of a cylinder at the top of the external thread body 1 is 83.07 +/-0.01 mm, the diameter of the thread bottom sealing surface 3 is 84.68(+0.016-0.012) mm, and the diameter of a circle at the highest point of the thread bottom sealing surface 3 is 89.03(+0.12-0.13) mm.
All the above components are prior art, and those skilled in the art can use any model and existing design that can implement their corresponding functions.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (2)
1. The sealing drill rod external thread structure is characterized by comprising an external thread body (1), thread bottom surface sealing surfaces (3) and thread end surface sealing surfaces (4) at two ends of the external thread body (1), a thread sharp angle on the external thread body (1), a thread pitch of the external thread body (1) of 8.47mm, an effective thread length (2) of 42.9mm, a thread full length (21) of 44.35(+0.02-0.03) mm, a thread taper of 1 degree 2', an end surface width of the external thread body (1) of 4.98 (+ 0.18-0.20) mm, a depth of the thread bottom surface sealing surface (3) of 0.53mm, a thread bottom surface sealing surface included angle (31) of 15 degrees, a thread end surface sealing surface included angle (41) of the thread end surface sealing surface (4) of 15 degrees, a thread tooth thickness (5) of 0.876-0.902 mm, a diameter of the thread end surface sealing surface (4) of 81.29 +/-0.04 mm, and a cylindrical diameter 83.07 +/-0.01 mm of the top, the diameter 84.68(+0.016-0.012) mm of the thread bottom sealing surface (3), and the diameter 89.03(+0.12-0.13) mm of the circle where the highest point of the thread bottom sealing surface (3) is located.
2. The external thread structure of the sealing drill rod as claimed in claim 1, wherein the included angle (31) of the sealing surface of the thread bottom surface is 0.38 plus or minus 0.05mm in fillet radius, and the included angle (41) of the sealing surface of the thread end surface is 0.51 plus or minus 0.05mm in fillet radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911047395.XA CN110593774A (en) | 2019-10-30 | 2019-10-30 | Sealing drill rod external thread structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911047395.XA CN110593774A (en) | 2019-10-30 | 2019-10-30 | Sealing drill rod external thread structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110593774A true CN110593774A (en) | 2019-12-20 |
Family
ID=68852284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911047395.XA Pending CN110593774A (en) | 2019-10-30 | 2019-10-30 | Sealing drill rod external thread structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110593774A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2324973A1 (en) * | 1975-09-19 | 1977-04-15 | Attock Oilfield Equip | PERFECTED FITTING WITH SCREWING FOR PIPES, ESPECIALLY FOR DRILLING |
| EP0364413A1 (en) * | 1988-10-03 | 1990-04-18 | DALMINE S.p.A. | Hermetic metal pipe joint |
| CN202300224U (en) * | 2011-08-17 | 2012-07-04 | 海隆石油钻具（无锡）有限公司 | High-sealing anti-screw expansion drill rod joint |
| CN203978318U (en) * | 2014-07-22 | 2014-12-03 | 江苏和信石油机械有限公司 | There is the tool joint of varying pitch all-sealed structure |
| CN204082025U (en) * | 2014-09-20 | 2015-01-07 | 淄博通光都金属科技有限公司 | A kind of aluminium drill pipe and jumper steel joint thereof |
-
2019
- 2019-10-30 CN CN201911047395.XA patent/CN110593774A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2324973A1 (en) * | 1975-09-19 | 1977-04-15 | Attock Oilfield Equip | PERFECTED FITTING WITH SCREWING FOR PIPES, ESPECIALLY FOR DRILLING |
| EP0364413A1 (en) * | 1988-10-03 | 1990-04-18 | DALMINE S.p.A. | Hermetic metal pipe joint |
| CN202300224U (en) * | 2011-08-17 | 2012-07-04 | 海隆石油钻具（无锡）有限公司 | High-sealing anti-screw expansion drill rod joint |
| CN203978318U (en) * | 2014-07-22 | 2014-12-03 | 江苏和信石油机械有限公司 | There is the tool joint of varying pitch all-sealed structure |
| CN204082025U (en) * | 2014-09-20 | 2015-01-07 | 淄博通光都金属科技有限公司 | A kind of aluminium drill pipe and jumper steel joint thereof |
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