CN103670291B - Blast joint - Google Patents
Blast joint Download PDFInfo
- Publication number
- CN103670291B CN103670291B CN201310635695.6A CN201310635695A CN103670291B CN 103670291 B CN103670291 B CN 103670291B CN 201310635695 A CN201310635695 A CN 201310635695A CN 103670291 B CN103670291 B CN 103670291B
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- CN
- China
- Prior art keywords
- wearing bush
- wearing
- fixture block
- mount pad
- bush
- 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.)
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- 238000005553 drilling Methods 0.000 claims abstract description 35
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- JPNWDVUTVSTKMV-UHFFFAOYSA-N cobalt tungsten Chemical compound [Co].[W] JPNWDVUTVSTKMV-UHFFFAOYSA-N 0.000 claims description 4
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000914 Mn alloy Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 230000001681 protective effect Effects 0.000 description 5
- 210000001138 tear Anatomy 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 210000000952 spleen Anatomy 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of blast joint, comprise joint body, wearing bush, wearing bush fixture block and wearing bush mount pad; Have groove in the middle part of described joint body, wearing bush arranges in the groove of joint body; Wearing bush two ends are respectively arranged with sub-step, and wearing bush fixture block is put on the sub-step of wearing bush; Wearing bush two ends are respectively arranged with mounting groove, and wearing bush mount pad is separately positioned in mounting groove, push down wearing bush two ends and wearing bush fixture block; Wearing bush mount pad is connected by screw fastening with wearing bush fixture block; Described wearing bush, wearing bush fixture block, wearing bush mount pad can rotate by solderless wrapped connection head ontological idea of freedom.This blast joint structure is simple, manufactures cheap, can effectively lower drill string friction torque, protects drilling rod and sleeve pipe simultaneously, prevents hard metal object from falling into down-hole, increases the life-span of down-hole string, reduces drilling cost.
Description
Technical field
The present invention relates to a kind of oil drilling downhole tool, be specifically related to the protection instrument of sleeve pipe, drill string.
Background technology
Current drilling mode be unable to do without rotary drilling and top drive drilling mouth, and these 2 kinds of drilling modes are all that power passes to drill bit by drilling tool rotation by ground, thus fractured rock. like this, having cased well section, drilling tool and sleeve pipe will produce friction, and drilling tool weares and teares in advance, casing wall is thinning even worn out, serious conditions setting of casing is squeezed to be ruined, and affects the stability of the borehole wall, or the borehole wall is collapsed recklessly.If casing off is high-pressure oil-gas layer, oil gas can be produced and invade, drilling fluid density is reduced, cause well kick accident; If casing off is low pressure pool gas-bearing formation, can leakage be produced, pollute reservoir.At barefoot interval, drilling tool directly and rock stratum rub, not only wear and tear drilling tool, and affect borehole wall stability.When drilling tool rotates, drilling tool and sleeve pipe (or rock stratum) friction, increase reaction torque, especially anti-group of square bearing of kelly bar is very large, and the kelly bar long-term phase bears excessive reaction torque and early fatigue can occur destroys.
In recent years, along with the development of drilling technology, the continuous increase of drilling depth, the increasingly sophisticated of well track, cause the friction between drilling rod and sleeve pipe constantly to aggravate.Wearing and tearing between drilling rod and sleeve pipe can make tool joint wear and tear on the one hand, and cause drilling rod getting up early to lose efficacy, drill string torque is too high also easily causes drilling tool fracture accident.Sleeve pipe heavy wear can be made on the one hand in addition, impact drilling well subsequently, completion and mining operations quality and safety.
Mainly <244. 6 mm (95/ 8 ") and <3 39. 7 mm (133/8 ") the protective casing <215.9 mm (81/ 2 ") of typical case under this two-layer protective casing and <3 11mm(121/ 4 the most in the well structure design that China is present ") well section Open-Hole Section is very long, make a trip often, rotating hour number is many, and occurring that the probability of severe dog-leg is large, these factors all can produce heavy wear to protective casing.All have a large amount of examples both at home and abroad, the oil well of China typical protective casing wearing and tearing has: ancient 204 wells of car, new 851, holy section 1 well, Ying Ke 1 well, tooth Ha7Jing, Well Kc1, east autumn 5 well, city, precipice 132123 well, Hao Ke 1 well, Quele 1 Well, 132122 wells in positive Xia1Jing, Bohai Sea Cao Ji pasture 182221 well and tide.Its middle-jiao yang, function of the spleen and stomach Xia1Jing, because of the many places heavy wear of <244. 5mm SM 110TT sleeve pipe, replaces mud with blue or green water and causes casing collapse, be finally somebody's turn to do and scrap, losing nearly hundred million yuans in formation testing.New 851 wells wear and tear due to protective casing, and gases at high pressure make production string break, and then make throwing art casing collapse cause well head to steam.In Bohai Sea Cao Ji pasture 12221 well and tide there are No. 3 the worn out phenomenons of sleeve pipe in 13212 wells.
In order to reduce the fretting wear of drilling rod and sleeve pipe, one of method often adopted at present adopts non-rotating blast joint.This blast joint is connected directly between on drill string, avoids the wearing and tearing of tool joint and sleeve pipe, reduce drilling torque simultaneously in joint location by the slip between metal outer sliding sleeve and mandrel.But similar prior art all also exists needs special wearing layer, and adopt metal wearing bush also comparatively large to the wearing and tearing of sleeve pipe, affect cementing quality and safety.
In order to solve above-mentioned deficiency of the prior art, the present invention proposes a kind of new solution.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, provides a kind of energy available protecting down-hole string, can reduce again the device of drill string rotating frictional resistance in drilling process, and this device meets underground work requirement, long service life.
For reaching foregoing invention object, the technical solution adopted in the present invention is: provide a kind of blast joint, comprises joint body, wearing bush, wearing bush fixture block and wearing bush mount pad; Have groove in the middle part of described joint body, wearing bush arranges in the groove of joint body;
Wearing bush two ends are respectively arranged with sub-step, and wearing bush fixture block is put on the sub-step of wearing bush; Wearing bush two ends are respectively arranged with mounting groove, and wearing bush mount pad is separately positioned in mounting groove, push down wearing bush two ends and wearing bush fixture block; Wearing bush mount pad is connected by screw fastening with wearing bush fixture block; Described wearing bush, wearing bush fixture block, wearing bush mount pad can rotate by solderless wrapped connection head ontological idea of freedom.
Two end face surfacings of described groove have wear resistant nickel base alloy layer.
The two ends of described joint body are respectively arranged with drilling rod internal thread and the external screw thread of standard.
Described wearing bush cylindrical has the above deep-slotted chip breaker of twice.
Screw is fixedly connected with wearing bush mount pad is permanent.
Described wearing bush is fastened by two halves and forms, and its horizontal profile becomes gear-like.
Described wearing bush adopts rich chromium cast iron or manganese alloy manufacture, and wearing bush surface surfacing has soft nickel base alloy layer, tungsten cobalt serial carbide alloy, ARNCO 100XT or ARNCO200XT.
Described wearing bush adopts nonmetallic wear-resistant material manufacture; Described nonmetallic wear-resistant material is cast stone, carborundum, alumina or zirconia ceramics.
In sum, blast joint tool provided by the present invention has the following advantages: structure is simple, manufactures cheap, can effectively lower drill string friction torque, protects drilling rod and sleeve pipe simultaneously, prevents hard metal object from falling into down-hole, increases the life-span of down-hole string, reduces drilling cost.
Accompanying drawing explanation
Fig. 1 is structure chart of the present invention;
Fig. 2 is the structure chart of joint body 1;
Fig. 3 is A-A sectional view of the present invention;
Fig. 4 is B-B sectional view of the present invention.
When showing the above-mentioned different materials of employing in Fig. 5 as wearing layer, the comparison of each material wear-resistant performance.
Wherein, 1, joint body; 2, wearing bush; 21, mounting groove; 22, sub-step; 23, deep-slotted chip breaker; 3, wearing bush fixture block; 4, wearing bush mount pad; 5, groove.
Detailed description of the invention
As shown in Figures 1 to 4, this blast joint, comprises joint body 1, wearing bush 2, wearing bush fixture block 3 and wearing bush mount pad 4; Have groove 5 in the middle part of described joint body 1, wearing bush 2 arranges in the groove 5 of joint body 1;
Wearing bush 2 two ends are respectively arranged with sub-step 22, on the sub-step that wearing bush 2 put into by wearing bush fixture block 3 22; Wearing bush 2 two ends are respectively arranged with mounting groove 21, and wearing bush mount pad 4 is separately positioned in mounting groove 21, push down wearing bush 2 two ends and wearing bush fixture block 3; Wearing bush mount pad 4 is connected by screw fastening with wearing bush fixture block 3; Described wearing bush 2, wearing bush fixture block 3, wearing bush mount pad 4 freely can rotate around joint body 1.
Two end face surfacings of described groove 5 have wear resistant nickel base alloy layer.
The two ends of described joint body 1 are respectively arranged with drilling rod internal thread and the external screw thread of standard.
Described wearing bush 2 cylindrical has the above deep-slotted chip breaker 23 of twice.Such as six roads.Described wearing bush 2 is fastened by two halves and forms, and its horizontal profile becomes gear-like.
Screw is fixedly connected with wearing bush mount pad 4 is permanent.Such as by spot welding, screw is fixedly connected with wearing bush mount pad 4 is permanent.
Described wearing bush 2 adopts rich chromium cast iron or manganese alloy manufacture, and the surperficial surfacing of wearing bush 2 has soft nickel base alloy layer, tungsten cobalt serial carbide alloy, ARNCO 100XT or ARNCO200XT.As the tungsten carbide etc. in tungsten cobalt serial carbide alloy.High rigidity due to tungsten carbide particle has good antiwear characteristic and plays a very good protection to tool joint.When showing the above-mentioned different materials of employing in Fig. 5 as wearing layer, the comparison of each material wear-resistant performance.
Described wearing bush 2 adopts nonmetallic wear-resistant material manufacture; Described nonmetallic wear-resistant material is cast stone, carborundum, alumina or zirconia ceramics.
The blast joint assembled is connected in drill string by the drilling rod internal thread of standard and external screw thread, in company with drill string rotary motion together, when drilling rod and casing wall come in contact, just touch sleeve pipe by larger-size wearing bush 2, due to the good and soft of nonmetal wearing bush low-friction coefficient, self-lubricating property, minimum with the friction factor of metal, and wearing bush 2 self freely can rotate around joint body 1, just be equivalent between joint body 1 and sleeve pipe, add a bearer ring, significantly reduce the frictional resistance of drill string rotating in drilling process.Due to when nonmetal wearing bush and Metal Contact, there is fabulous abrasion resistance simultaneously.Therefore wear and tear hardly to down-hole string drilling rod and sleeve pipe, laboratory test and field trial prove (as shown in Figure 5 data), and its wearing and tearing are almost nil.Its application life increases greatly.
Main thought of the present invention installs this instrument in drilling assembly in drillng operation, is convenient to the friction torque protected down-hole string and reduce drill string.By below to the description of embodiment; to more contribute to public understanding the present invention; but the restriction that the specific embodiment given by applicant can't be considered as technical solution of the present invention, any definition to parts or technical characteristic change and/or to overall structure do form and immaterial conversion all should be considered as the protection domain that technical scheme of the present invention limits.
Claims (8)
1. blast joint, is characterized in that: comprise joint body (1), wearing bush (2), wearing bush fixture block (3) and wearing bush mount pad (4); Described joint body (1) middle part has groove (5), and wearing bush (2) arranges in the groove (5) of joint body (1);
Wearing bush (2) two ends are respectively arranged with sub-step (22), on the sub-step that wearing bush (2) put into by wearing bush fixture block (3) (22); Wearing bush (2) two ends are respectively arranged with mounting groove (21), and wearing bush mount pad (4) is separately positioned in mounting groove (21), push down wearing bush (2) two ends and wearing bush fixture block (3); Wearing bush mount pad (4) is connected by screw fastening with wearing bush fixture block (3); Described wearing bush (2), wearing bush fixture block (3), wearing bush mount pad (4) freely can rotate around joint body (1).
2. blast joint according to claim 1, is characterized in that: two end face surfacings of described groove (5) have wear resistant nickel base alloy layer.
3. blast joint according to claim 1, is characterized in that: the two ends of described joint body (1) are respectively arranged with drilling rod internal thread and the external screw thread of standard.
4. blast joint according to claim 1, is characterized in that: described wearing bush (2) cylindrical has the above deep-slotted chip breaker of twice (23).
5. blast joint according to claim 1, is characterized in that: screw is fixedly connected with wearing bush mount pad (4) is permanent.
6. blast joint according to claim 1, is characterized in that: described wearing bush (2) is fastened by two halves and forms, and its horizontal profile becomes gear-like.
7. blast joint according to claim 1, it is characterized in that: described wearing bush (2) adopts rich chromium cast iron or manganese alloy manufacture, and wearing bush (2) surperficial surfacing has soft nickel base alloy layer, tungsten cobalt serial carbide alloy, ARNCO 100XT or ARNCO200XT.
8. blast joint according to claim 1, is characterized in that: described wearing bush (2) adopts nonmetallic wear-resistant material manufacture; Described nonmetallic wear-resistant material is cast stone, carborundum, alumina or zirconia ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310635695.6A CN103670291B (en) | 2013-12-03 | 2013-12-03 | Blast joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310635695.6A CN103670291B (en) | 2013-12-03 | 2013-12-03 | Blast joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103670291A CN103670291A (en) | 2014-03-26 |
| CN103670291B true CN103670291B (en) | 2015-09-02 |
Family
ID=50308981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310635695.6A Active CN103670291B (en) | 2013-12-03 | 2013-12-03 | Blast joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103670291B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577157A (en) * | 2020-05-26 | 2020-08-25 | 中国石油天然气集团有限公司 | Aluminum alloy drill rod |
| CN112761546A (en) * | 2021-02-04 | 2021-05-07 | 西南石油大学 | Drag-reducing and wear-resisting drill string protector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62215793A (en) * | 1986-03-13 | 1987-09-22 | 株式会社クボタ | Abrasion resistant blast joint for tubing of petroleum and natural gas producing oil well |
| CN2455919Y (en) * | 2000-11-22 | 2001-10-24 | 石油勘探开发科学研究院机械研究所 | Non-rotary joint |
| CN201428393Y (en) * | 2009-03-31 | 2010-03-24 | 安丘市石油钻采机械厂 | Anti-friction joint |
| CN203594378U (en) * | 2013-12-03 | 2014-05-14 | 成都恩承油气有限公司 | Anti-abrasion connector |
-
2013
- 2013-12-03 CN CN201310635695.6A patent/CN103670291B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103670291A (en) | 2014-03-26 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 610000 Sichuan Province, Chengdu City, bay 66 Patentee after: CHENGDU EN-SHAIN TECHNOLOGY Inc. Address before: 610000 Sichuan Province, Chengdu City, bay 66 Patentee before: CHENGDU EN-SHINE OIL & GAS Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Torque-reducing and abrasion-resistant joint Effective date of registration: 20170214 Granted publication date: 20150902 Pledgee: Agricultural Bank of China Limited by Share Ltd. Chengdu Qingyang branch Pledgor: CHENGDU EN-SHAIN TECHNOLOGY Inc.|SICHUAN ROREI TECHNOLOGY CO.,LTD. Registration number: 2017510000010 |
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Date of cancellation: 20180301 Granted publication date: 20150902 Pledgee: Agricultural Bank of China Limited by Share Ltd. Chengdu Qingyang branch Pledgor: CHENGDU EN-SHAIN TECHNOLOGY Inc.|SICHUAN ROREI TECHNOLOGY CO.,LTD. Registration number: 2017510000010 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
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Denomination of invention: Torque-reducing and abrasion-resistant joint Effective date of registration: 20180326 Granted publication date: 20150902 Pledgee: Sichuan Tianfu financial leasing Limited by Share Ltd. Pledgor: SICHUAN ROREI TECHNOLOGY CO.,LTD.|CHENGDU EN-SHAIN TECHNOLOGY Inc. Registration number: 2018510000034 |
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Date of cancellation: 20191226 Granted publication date: 20150902 Pledgee: Sichuan Tianfu financial leasing Limited by Share Ltd. Pledgor: CHENGDU EN-SHAIN TECHNOLOGY Inc. Registration number: 2018510000034 |
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Denomination of invention: Torque-reducing and abrasion-resistant joint Effective date of registration: 20200102 Granted publication date: 20150902 Pledgee: Sichuan Tianfu financial leasing Limited by Share Ltd. Pledgor: CHENGDU EN-SHAIN TECHNOLOGY Inc. Registration number: Y2020510000001 |
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Date of cancellation: 20211025 Granted publication date: 20150902 Pledgee: Sichuan Tianfu financial leasing Limited by Share Ltd. Pledgor: CHENGDU EN-SHAIN TECHNOLOGY Inc. Registration number: Y2020510000001 |
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Denomination of invention: Anti wear joint Effective date of registration: 20211027 Granted publication date: 20150902 Pledgee: Sichuan Tianfu financial leasing Limited by Share Ltd. Pledgor: CHENGDU EN-SHAIN TECHNOLOGY Inc. Registration number: Y2021510000263 |
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Effective date of registration: 20231205 Granted publication date: 20150902 |