CN110374522A - A kind of shale gas exploitation nipple - Google Patents
A kind of shale gas exploitation nipple Download PDFInfo
- Publication number
- CN110374522A CN110374522A CN201910579789.3A CN201910579789A CN110374522A CN 110374522 A CN110374522 A CN 110374522A CN 201910579789 A CN201910579789 A CN 201910579789A CN 110374522 A CN110374522 A CN 110374522A
- Authority
- CN
- China
- Prior art keywords
- thread
- screw thread
- shale gas
- male connection
- external screw
- 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
- 210000002445 nipple Anatomy 0.000 title claims abstract description 23
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 230000006837 decompression Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Dowels (AREA)
Abstract
The invention discloses a kind of shale gas exploitation nipples, including male connection and female adapter, the round thread of male connection fades away towards male connection taper direction, the thread segment of male connection includes external screw thread complete thread and the incomplete screw thread of external screw thread, the thread taper of the incomplete screw thread of external screw thread complete thread and external screw thread is identical, and female adapter is provided with decompression arc groove in round thread section；Setting decompression arc groove, is conducive to the flowing of nipple thread compound during upper button, avoids thread compound and assemble to form partial high pressure and generate big local stress in female adapter；Male connection increases incomplete screw thread and engages tension, antitorque and incompressible bearing capacity after enhancing internal and external threads engagement with internal screw thread；The present invention solves the problems, such as that shale gas exploitation needs economic and practical casing thread connection, by optimal setting helicitic texture, enhances nipple and bears to stretch, compress, the ability of sealing and torque resistant load.
Description
Technical field
The invention belongs to Unconventional gas to develop equipment field, and in particular to a kind of shale gas exploitation nipple.
Background technique
Shale gas refers to preservation in rich organic matter mud shale and its interlayer, with absorption and free state for the side of being primarily present
The Unconventional gas of formula, ingredient are a kind of cleaning, efficient energy resources and industrial chemicals based on methane.Chinese shale
Gas is resourceful, and global shale gas technically recoverable resources rank the first, and reaches 36 tcms, is conventional gas
1.6 again.Since shale gas reservoir has the characteristics that low porosity and low-permeability, exploitation difficulty great development is costly, Yao Shixian
Commercialization exploitation must reduce cost of winning, since shale gas exploitation will use a large amount of casing, so selecting economic and practical
Casing is the key that realize the exploitation of shale gas low cost.
To improve recovery ratio, shale gas exploitation needs to cause casing to be on active service using horizontal well technology and hydraulic fracturing technology
Need to bear the load such as stretching, compression, hydraulic pressure, air pressure, torsion in the process.API (the American that petroleum industry uses
Petroleum Institute, American Petroleum Institute (API)) economical screw thread mainly includes API round thread and API buttress thread,
The screw thread that engagement is not involved in behind API round thread effective thread, which has the more processing tapers bigger than effective thread taper, to be caused
API round thread tension and resistance to compression and torque resistant ability are limited, and API buttress thread tension and anti-pressure ability be strong but sealing performance
Difference, so economical API screw thread does not adapt to the needs of shale gas exploitation.It is comprehensive with sealing surface and the special thread of torque shoulder
Performance is good, but processes complexity, and detection and evaluation requirement are high, leads to high production cost, limit it makes in shale gas exploitation
With.
Summary of the invention
The object of the present invention is to provide a kind of shale gas exploitation Special threading connector, by optimal setting helicitic texture,
Enhance nipple to bear to stretch, compress, the ability of sealing and torque resistant load, meets the needs of shale gas low cost exploitation.
To achieve the goals above, the technical solution adopted by the present invention is that, a kind of shale gas exploitation nipple, including
The round thread of male connection and female adapter, male connection fades away towards male connection taper direction, outer spiral shell
The thread segment of line connector includes external screw thread complete thread and the incomplete screw thread of external screw thread, and external screw thread complete thread and external screw thread are non-complete
The thread taper of whole screw thread is identical, and female adapter is provided with decompression arc groove in round thread section.
Male connection is provided with -3 °~-10 ° of inverse angle external screw thread shoulder, and female adapter is provided with -3 °~-10 °
Inverse angle internal screw thread shoulder.
The round thread of female adapter is complete thread.
The small end of female adapter is provided with thread compound reserve tank.
The thread type of male connection and female adapter is API round thread or non-API round thread.
The depth for depressurizing arc groove is greater than screw thread gullet depth.
Arc groove is depressurized to be arranged in internal screw thread and external screw thread complete thread engaged section.
Compared with prior art, the present invention at least has the advantages that
Decompression arc groove is arranged in the present invention in female adapter, is conducive to nipple thread compound during upper button
Flowing, avoids thread compound and assembles to form partial high pressure and generate big local stress；Male connection increases incomplete screw thread
Tension, antitorque and incompressible bearing capacity after enhancing internal and external threads engagement are engaged with internal screw thread；Enhanced using torque shoulder
The sealability of nipple is enhanced while nipple anti-torsion and resistance to compression；The present invention solves shale gas and opens
Adopt the problem for needing economic and practical casing thread connection, by optimal setting helicitic texture, enhance nipple bear to stretch,
The ability of compression, sealing and torque resistant load meets the needs of shale gas low cost exploitation.
Detailed description of the invention
Fig. 1 is nipple assembling schematic diagram of the present invention.
Fig. 2 is male connection schematic diagram.
Fig. 3 is female adapter schematic diagram.
Wherein: 1- male connection；2- female adapter；11- external screw thread shoulder；12- external screw thread；21- internal screw thread shoulder；
22- thread compound reserve tank；23- depressurizes arc groove；24- internal screw thread；13- external screw thread complete thread；The incomplete spiral shell of 14- external screw thread
Line.
Specific embodiment
The present invention is explained further with reference to the accompanying drawing.
As shown in FIG. 1 to 3, a kind of shale gas exploitation nipple of the present invention, including male connection 1 and interior
The round thread of nipple 2, male connection 1 fades away towards 1 taper direction of male connection, the spiral shell of male connection 1
Line section includes external screw thread complete thread 13 and the incomplete screw thread 14 of external screw thread, external screw thread complete thread 13 and the incomplete spiral shell of external screw thread
The thread taper of line 14 is identical, and female adapter 2 is provided with decompression arc groove 23 in round thread section；The circle spiral shell of female adapter 2
Line is complete thread；The small end of female adapter 2 is provided with thread compound reserve tank 22；The depth for depressurizing arc groove 23 is greater than screw thread
Gullet depth.
Arc groove 23 is depressurized to be arranged in internal screw thread and 13 engaged section of external screw thread complete thread.
Male connection 1 is provided with -3 °~-10 ° of inverse angle external screw thread shoulder 11, and female adapter 2 is provided with -3 °
~-10 ° of inverse angle internal screw thread shoulder 21.
The thread type of male connection 1 and female adapter 2 is API round thread or non-API round thread.
Claims (7)
1. a kind of shale gas exploitation nipple, which is characterized in that including male connection (1) and female adapter (2), outside
The round thread of nipple (1) fades away towards male connection (1) taper direction, the thread segment packet of male connection (1)
Include external screw thread complete thread (13) and the incomplete screw thread of external screw thread (14), external screw thread complete thread (13) and the incomplete spiral shell of external screw thread
The thread taper of line (14) is identical, and female adapter (2) is provided with decompression arc groove (23) in round thread section.
2. shale gas exploitation nipple according to claim 1, which is characterized in that male connection (1) is provided with-
3 °~-10 ° of inverse angle external screw thread shoulder (11), female adapter (2) are provided with -3 °~-10 ° of inverse angle internal screw thread shoulder
(21)。
3. shale gas exploitation nipple according to claim 1, which is characterized in that the circle spiral shell of female adapter (2)
Line is complete thread.
4. shale gas exploitation nipple according to claim 1, which is characterized in that the small end of female adapter (2)
It is provided with thread compound reserve tank (22).
5. shale gas exploitation nipple according to claim 1, which is characterized in that male connection (1) and interior spiral shell
The thread type of line connector (2) is API round thread or non-API round thread.
6. shale gas exploitation nipple according to claim 1, which is characterized in that the depth of decompression arc groove (23)
Greater than screw thread gullet depth.
7. shale gas exploitation nipple according to claim 1, which is characterized in that decompression arc groove (23) setting exists
Internal screw thread and external screw thread complete thread (13) engaged section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910579789.3A CN110374522A (en) | 2019-06-28 | 2019-06-28 | A kind of shale gas exploitation nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910579789.3A CN110374522A (en) | 2019-06-28 | 2019-06-28 | A kind of shale gas exploitation nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110374522A true CN110374522A (en) | 2019-10-25 |
Family
ID=68251310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910579789.3A Pending CN110374522A (en) | 2019-06-28 | 2019-06-28 | A kind of shale gas exploitation nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110374522A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12140240B1 (en) | 2022-01-19 | 2024-11-12 | Vulcan Industrial Holdings, LLC | Gradient material structures and methods of forming the same |
| USD1061623S1 (en) | 2022-08-03 | 2025-02-11 | Vulcan Industrial Holdings, LLC | Fluid end for a pumping system |
| US12270394B2 (en) | 2020-06-30 | 2025-04-08 | Vulcan Industrial Holdings, LLC | Packing bore wear sleeve retainer system |
| US12292121B2 (en) | 2023-08-10 | 2025-05-06 | Vulcan Industrial Holdings, LLC | Valve member including cavity, and related assemblies, systems, and methods |
| US12292120B1 (en) | 2021-02-23 | 2025-05-06 | Vulcan Industrial Holdings, LLC | System and method for valve assembly |
| US12297922B1 (en) | 2022-03-04 | 2025-05-13 | Vulcan Industrial Holdings, LLC | Valve seat with embedded structure and related methods |
| US12345253B2 (en) | 2020-06-30 | 2025-07-01 | Vulcan Industrial Holdings, LLC | Packing assembly with threaded sleeve for interaction with an installation tool |
| US12345332B2 (en) | 2021-08-18 | 2025-07-01 | Vulcan Industrial Holdings, LLC | Self-locking plug |
| US12366245B1 (en) | 2020-08-27 | 2025-07-22 | Vulcan Industrial Holdings, LLC | Connecting rod assembly for reciprocating pump |
| US12366244B2 (en) | 2022-04-25 | 2025-07-22 | Vulcan Industrial Holdings, LLC | Spring controlling valve |
| US12404931B2 (en) | 2021-01-14 | 2025-09-02 | Vulcan Industrial Holdings, LLC | Dual ring stuffing box |
| US12510164B1 (en) | 2021-08-18 | 2025-12-30 | Vulcan Industrial Holdings, LLC | Sleeved fluid end |
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|---|---|---|---|---|
| US4830411A (en) * | 1987-02-23 | 1989-05-16 | Nippon Steel Corporation | Threaded joint for oil-well pipe |
| WO2000014442A1 (en) * | 1998-09-07 | 2000-03-16 | Vallourec Mannesmann Oil & Gas France | Threaded connection of two metal tubes with groove in the threading |
| US6050610A (en) * | 1997-05-20 | 2000-04-18 | Hydril Company | Stress reduction groove for tubular connection |
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| CN206753508U (en) * | 2017-02-15 | 2017-12-15 | 辽宁辽鞍工程机械有限公司 | A kind of horizontal well and extended reach well nipple |
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| US7350830B1 (en) * | 2003-01-02 | 2008-04-01 | Grant Prideco, L.P. | Pressure relieved thread connection |
| US6905149B2 (en) * | 2003-01-02 | 2005-06-14 | Grant Prideco, L.P. | Pressure relieved thread connection |
| JP2005351324A (en) * | 2004-06-09 | 2005-12-22 | Metal One Corp | Screw joint for oil well pipe |
| CN200971757Y (en) * | 2006-06-08 | 2007-11-07 | 天津钢管集团有限公司 | High seal buttless thread double-pipe connection structure |
| US7717478B2 (en) * | 2006-08-29 | 2010-05-18 | Hydril Llc | Scalloped wedge threads |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12480489B2 (en) | 2020-06-30 | 2025-11-25 | Vulcan Industrial Holdings, LLC | Packing bore wear sleeve retainer system |
| US12270394B2 (en) | 2020-06-30 | 2025-04-08 | Vulcan Industrial Holdings, LLC | Packing bore wear sleeve retainer system |
| US12345253B2 (en) | 2020-06-30 | 2025-07-01 | Vulcan Industrial Holdings, LLC | Packing assembly with threaded sleeve for interaction with an installation tool |
| US12366245B1 (en) | 2020-08-27 | 2025-07-22 | Vulcan Industrial Holdings, LLC | Connecting rod assembly for reciprocating pump |
| US12404931B2 (en) | 2021-01-14 | 2025-09-02 | Vulcan Industrial Holdings, LLC | Dual ring stuffing box |
| US12292120B1 (en) | 2021-02-23 | 2025-05-06 | Vulcan Industrial Holdings, LLC | System and method for valve assembly |
| US12510164B1 (en) | 2021-08-18 | 2025-12-30 | Vulcan Industrial Holdings, LLC | Sleeved fluid end |
| US12345332B2 (en) | 2021-08-18 | 2025-07-01 | Vulcan Industrial Holdings, LLC | Self-locking plug |
| US12498051B2 (en) | 2022-01-19 | 2025-12-16 | Vulcan Industrial Holdings, LLC | Gradient material structures and methods of forming the same |
| US12140240B1 (en) | 2022-01-19 | 2024-11-12 | Vulcan Industrial Holdings, LLC | Gradient material structures and methods of forming the same |
| US12297922B1 (en) | 2022-03-04 | 2025-05-13 | Vulcan Industrial Holdings, LLC | Valve seat with embedded structure and related methods |
| US12366244B2 (en) | 2022-04-25 | 2025-07-22 | Vulcan Industrial Holdings, LLC | Spring controlling valve |
| USD1061623S1 (en) | 2022-08-03 | 2025-02-11 | Vulcan Industrial Holdings, LLC | Fluid end for a pumping system |
| US12292121B2 (en) | 2023-08-10 | 2025-05-06 | Vulcan Industrial Holdings, LLC | Valve member including cavity, and related assemblies, systems, and methods |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191025 |
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| RJ01 | Rejection of invention patent application after publication |