CA2014217C - Dispositif de recuperation des tiges de forage - Google Patents

Dispositif de recuperation des tiges de forage

Info

Publication number: CA2014217C
Authority: CA; Canada
Prior art keywords: drill; retrieval; drill rod; rod; shaft
Prior art date: 1990-04-09
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.): Expired - Fee Related

Application number

CA 2014217

Other languages

English (en)

Other versions

CA2014217A1 (fr

Inventor

David H. Walsh

Charles B. Walsh

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Individual

Original Assignee

Individual

Priority date (The priority date 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 date listed.)

1990-04-09

Filing date

1990-04-09

Publication date

1997-11-18

1990-04-09 Application filed by Individual filed Critical Individual

1990-04-09 Priority to CA 2014217 priority Critical patent/CA2014217C/fr

1991-10-09 Publication of CA2014217A1 publication Critical patent/CA2014217A1/fr

1992-02-05 Priority to US07/830,962 priority patent/US5141275A/en

1997-11-18 Application granted granted Critical

1997-11-18 Publication of CA2014217C publication Critical patent/CA2014217C/fr

2010-04-09 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

238000010168 coupling process Methods 0.000 claims abstract description 14
238000005859 coupling reaction Methods 0.000 claims abstract description 14
230000008878 coupling Effects 0.000 claims abstract description 13
238000007664 blowing Methods 0.000 claims description 2
230000037431 insertion Effects 0.000 claims 1
238000003780 insertion Methods 0.000 claims 1
238000005553 drilling Methods 0.000 description 19
239000000463 material Substances 0.000 description 3
238000000034 method Methods 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
241000251468 Actinopterygii Species 0.000 description 1
241000282320 Panthera leo Species 0.000 description 1
241000183024 Populus tremula Species 0.000 description 1
239000004568 cement Substances 0.000 description 1
238000011010 flushing procedure Methods 0.000 description 1
230000005484 gravity Effects 0.000 description 1
229910052500 inorganic mineral Inorganic materials 0.000 description 1
239000002184 metal Substances 0.000 description 1
239000011707 mineral Substances 0.000 description 1
229920001084 poly(chloroprene) Polymers 0.000 description 1
238000011084 recovery Methods 0.000 description 1
239000011435 rock Substances 0.000 description 1
238000005406 washing Methods 0.000 description 1

Landscapes

Earth Drilling (AREA)

CA 2014217 1990-04-09 1990-04-09 Dispositif de recuperation des tiges de forage Expired - Fee Related CA2014217C (fr)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
CA 2014217 CA2014217C (fr)	1990-04-09	1990-04-09	Dispositif de recuperation des tiges de forage
US07/830,962 US5141275A (en)	1990-04-09	1992-02-05	Drill rod retrieval device

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA 2014217 CA2014217C (fr)	1990-04-09	1990-04-09	Dispositif de recuperation des tiges de forage

Publications (2)

Publication Number	Publication Date
CA2014217A1 CA2014217A1 (fr)	1991-10-09
CA2014217C true CA2014217C (fr)	1997-11-18

Family

ID=4144722

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA 2014217 Expired - Fee Related CA2014217C (fr)	1990-04-09	1990-04-09	Dispositif de recuperation des tiges de forage

Country Status (1)

Country	Link
CA (1)	CA2014217C (fr)

1990
- 1990-04-09 CA CA 2014217 patent/CA2014217C/fr not_active Expired - Fee Related

Also Published As

Publication number	Publication date
CA2014217A1 (fr)	1991-10-09

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Legal Events

Date	Code	Title	Description
1992-05-04	EEER	Examination request
2005-04-11	MKLA	Lapsed