EP0544835A4 - Variable depth grooved drill string member - Google Patents
Variable depth grooved drill string memberInfo
- Publication number
- EP0544835A4 EP0544835A4 EP19910919444 EP91919444A EP0544835A4 EP 0544835 A4 EP0544835 A4 EP 0544835A4 EP 19910919444 EP19910919444 EP 19910919444 EP 91919444 A EP91919444 A EP 91919444A EP 0544835 A4 EP0544835 A4 EP 0544835A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- grooved
- inertia
- slip
- cross
- 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.)
- Granted
Links
- 238000005452 bending Methods 0.000 abstract description 17
- 238000005553 drilling Methods 0.000 description 13
- 230000007704 transition Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- NRTLIYOWLVMQBO-UHFFFAOYSA-N 5-chloro-1,3-dimethyl-N-(1,1,3-trimethyl-1,3-dihydro-2-benzofuran-4-yl)pyrazole-4-carboxamide Chemical compound C=12C(C)OC(C)(C)C2=CC=CC=1NC(=O)C=1C(C)=NN(C)C=1Cl NRTLIYOWLVMQBO-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
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
- E21B17/16—Drill collars
-
- 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
- E21B17/22—Rods or pipes with helical structure
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1991/003159 WO1993000500A2 (en) | 1991-06-25 | 1991-06-25 | Variable depth grooved drill string member |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0544835A1 EP0544835A1 (en) | 1993-06-09 |
EP0544835A4 true EP0544835A4 (en) | 1993-09-22 |
EP0544835B1 EP0544835B1 (en) | 1996-08-21 |
Family
ID=22225514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91919444A Expired - Lifetime EP0544835B1 (en) | 1991-06-25 | 1991-06-25 | Variable depth grooved drill string member |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0544835B1 (en) |
CA (1) | CA2090758C (en) |
DE (1) | DE69121575T2 (en) |
WO (1) | WO1993000500A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002088511A1 (en) * | 2001-04-26 | 2002-11-07 | Furukawa Co., Ltd. | Step tube rod, and drilling machine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125173A (en) * | 1964-03-17 | Tubular drill string members | ||
US4285407A (en) * | 1979-12-17 | 1981-08-25 | Samford Travis L | Straight hole driller |
FR2517357A1 (en) * | 1981-11-27 | 1983-06-03 | Smf Int | Boring rod for ground working - is divided into three zones with centre having hard covering and shearing neck at top |
US4460202A (en) * | 1980-11-26 | 1984-07-17 | Chance Glenn G | Intermediate weight drill string member |
EP0313413A1 (en) * | 1987-10-22 | 1989-04-26 | Weatherford U.S. Inc. | Flexible drill string member and method of drilling deviated holes |
-
1991
- 1991-06-25 EP EP91919444A patent/EP0544835B1/en not_active Expired - Lifetime
- 1991-06-25 WO PCT/US1991/003159 patent/WO1993000500A2/en active IP Right Grant
- 1991-06-25 DE DE69121575T patent/DE69121575T2/en not_active Expired - Lifetime
- 1991-06-25 CA CA002090758A patent/CA2090758C/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125173A (en) * | 1964-03-17 | Tubular drill string members | ||
US4285407A (en) * | 1979-12-17 | 1981-08-25 | Samford Travis L | Straight hole driller |
US4460202A (en) * | 1980-11-26 | 1984-07-17 | Chance Glenn G | Intermediate weight drill string member |
FR2517357A1 (en) * | 1981-11-27 | 1983-06-03 | Smf Int | Boring rod for ground working - is divided into three zones with centre having hard covering and shearing neck at top |
EP0313413A1 (en) * | 1987-10-22 | 1989-04-26 | Weatherford U.S. Inc. | Flexible drill string member and method of drilling deviated holes |
Non-Patent Citations (1)
Title |
---|
See also references of WO9300500A3 * |
Also Published As
Publication number | Publication date |
---|---|
DE69121575T2 (en) | 1997-03-13 |
WO1993000500A3 (en) | 1993-02-18 |
CA2090758A1 (en) | 1992-12-26 |
DE69121575D1 (en) | 1996-09-26 |
EP0544835A1 (en) | 1993-06-09 |
WO1993000500A2 (en) | 1993-01-07 |
CA2090758C (en) | 1998-07-28 |
EP0544835B1 (en) | 1996-08-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5040622A (en) | Variable depth grooved drill string member | |
CA1176234A (en) | Intermediate weight drill string member | |
CA1335448C (en) | Flexible drill string member especially for use in directional drilling | |
US9388648B2 (en) | Drill pipe system and method for using same | |
US6030004A (en) | High torque threaded tool joint for drill pipe and other drill stem components | |
CA2221018C (en) | Straight hole drilling system | |
AU722567B2 (en) | Rod joint | |
US4416476A (en) | Intermediate weight drill stem member | |
EA018849B1 (en) | Drill packer member, drill pipe, and corresponding drill pipe string | |
CA2128114C (en) | Stress relief groove for drill pipe | |
US4365678A (en) | Tubular drill string member with contoured circumferential surface | |
US20100018699A1 (en) | Low Stress Threadform with a Non-conic Section Curve | |
AU2014208899B2 (en) | Shale drill pipe | |
US5361846A (en) | Apparatus and method for enhancing fatigue properties of subterranean well drill pipe immediate the area of securement to a tool joint | |
CA2473126C (en) | Drill member for rock drilling and a method for manufacturing the drill member | |
CA2090758C (en) | Variable depth grooved drill string member | |
US20070163778A1 (en) | Casing Centralizer Coupling | |
US20180187496A1 (en) | Drill pipe | |
US20200173584A1 (en) | Drill pipe | |
US5535837A (en) | Helical stress relief groove apparatus and method for subterranean well drill pipe assemblies | |
JP2000506575A (en) | Detachable guide for guiding drill string components in boreholes | |
GB2599783A (en) | Reduced differential sticking drilling collar | |
US5269570A (en) | Flexible casing for well boreholes | |
SE523940C2 (en) | Drill bit for rock drilling and a method for manufacturing the drill bit | |
US20200181989A1 (en) | Drill pipe and optimization thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19930312 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT NL |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SHAW INDUSTRIES LTD. |
|
RHK1 | Main classification (correction) |
Ipc: E21B 17/16 |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 19930805 |
|
AK | Designated contracting states |
Kind code of ref document: A4 Designated state(s): DE FR GB IT NL |
|
17Q | First examination report despatched |
Effective date: 19940218 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
ITF | It: translation for a ep patent filed |
Owner name: PROROGA CONCESSA IN DATA: 16.10.96;BARZANO' E ZANA |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT NL |
|
ET | Fr: translation filed | ||
REF | Corresponds to: |
Ref document number: 69121575 Country of ref document: DE Date of ref document: 19960926 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19980630 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19990526 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000101 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20000101 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000625 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20000625 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20100706 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20100621 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20100625 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 69121575 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 69121575 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20110626 |