CA2509062C - Dispositif de centrage d'une gaine - Google Patents

Dispositif de centrage d'une gaine Download PDF

Info

Publication number: CA2509062C
Authority: CA; Canada
Prior art keywords: casing; centraliser; centralises; blades; assembly according
Prior art date: 1994-03-12
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 - Lifetime

Application number

CA002509062A

Other languages

English (en)

Other versions

CA2509062A1 (fr

Inventor

William Barron

Ian Alistair Kirk

Alistair Bertram Clark

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.)

Downhole Products Ltd

Original Assignee

Downhole Products Ltd

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.)

1994-03-12

Filing date

1995-03-13

Publication date

2008-10-21

1994-03-12 Priority claimed from GB9404857A external-priority patent/GB9404857D0/en

1995-03-13 Application filed by Downhole Products Ltd filed Critical Downhole Products Ltd

1995-09-13 Publication of CA2509062A1 publication Critical patent/CA2509062A1/fr

2008-10-21 Application granted granted Critical

2008-10-21 Publication of CA2509062C publication Critical patent/CA2509062C/fr

2015-03-13 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

229910001297 Zn alloy Inorganic materials 0.000 claims abstract description 12
239000000463 material Substances 0.000 claims abstract description 5
239000012530 fluid Substances 0.000 claims abstract description 4
HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 3
229910052725 zinc Inorganic materials 0.000 claims abstract description 3
239000011701 zinc Substances 0.000 claims abstract description 3
230000002093 peripheral effect Effects 0.000 claims description 2
229910045601 alloy Inorganic materials 0.000 description 7
239000000956 alloy Substances 0.000 description 7
238000000034 method Methods 0.000 description 3
229910000831 Steel Inorganic materials 0.000 description 2
239000004568 cement Substances 0.000 description 2
GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
238000004519 manufacturing process Methods 0.000 description 2
239000010959 steel Substances 0.000 description 2
229910001369 Brass Inorganic materials 0.000 description 1
238000005299 abrasion Methods 0.000 description 1
239000010951 brass Substances 0.000 description 1
238000004210 cathodic protection Methods 0.000 description 1
238000009826 distribution Methods 0.000 description 1
229930195733 hydrocarbon Natural products 0.000 description 1
150000002430 hydrocarbons Chemical class 0.000 description 1
230000002401 inhibitory effect Effects 0.000 description 1
229910052751 metal Inorganic materials 0.000 description 1
239000002184 metal Substances 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
238000002360 preparation method Methods 0.000 description 1
238000005086 pumping Methods 0.000 description 1
230000000452 restraining effect Effects 0.000 description 1
239000000565 sealant Substances 0.000 description 1
239000007787 solid Substances 0.000 description 1
239000003381 stabilizer Substances 0.000 description 1

Landscapes

Structures Of Non-Positive Displacement Pumps (AREA)
Earth Drilling (AREA)

CA002509062A 1994-03-12 1995-03-13 Dispositif de centrage d'une gaine Expired - Lifetime CA2509062C (fr)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
GB9404857		1994-03-12
GB9404857A GB9404857D0 (en)	1994-03-12	1994-03-12	Casing centraliser
CA002144504A CA2144504C (fr)	1994-03-12	1995-03-13	Dispositif de centrage d'une gaine

Related Parent Applications (1)

Application Number	Title	Priority Date	Filing Date
CA002144504A Division CA2144504C (fr)	1994-03-12	1995-03-13	Dispositif de centrage d'une gaine

Publications (2)

Publication Number	Publication Date
CA2509062A1 CA2509062A1 (fr)	1995-09-13
CA2509062C true CA2509062C (fr)	2008-10-21

Family

ID=34888019

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA002509062A Expired - Lifetime CA2509062C (fr)	1994-03-12	1995-03-13	Dispositif de centrage d'une gaine

Country Status (1)

Country	Link
CA (1)	CA2509062C (fr)

1995
- 1995-03-13 CA CA002509062A patent/CA2509062C/fr not_active Expired - Lifetime

Also Published As

Publication number	Publication date
CA2509062A1 (fr)	1995-09-13

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Legal Events

Date	Code	Title	Description
2005-06-22	EEER	Examination request
2015-05-17	MKEX	Expiry	Effective date: 20150313