Patent US3554280A successfully refreshed from Google Patents.
US3554280A
Expired / Lapsed
US
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Well packer and sealing elements therefor
Assignee: Dresser Industries Inc
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Filing: 1969-01-21
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Granted: 1971-01-12
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Expires: 1989-01-21
Abstract
Abstract A deformable packing element for use on packers that are to be used in oil and gas wells and the like. The packing element includes a generally cylindrical body that is arranged to be deformed into sealing engagement with the wall of the well bore and a deformable annular ring disposed in an annular groove in the interior of the body. The annular ring is adapted, upon deformation of the body, to form a seal with a mandrel that extends through the body.
Inventors
- 👤 Andrew J Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:09
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/1208; E21B33/128
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
72 words
A packing Element for sealing between the mandrel of well packers and the like and the casing in a well bore, said packing element comprising: a generally cylindrical body of deformable material, said body having an annular recess in its inner wall; and an annular member of substantially incompressible, deformable material located in said annular recess and engaging said body, said annular member sealingly engaging the mandrel upon deformation of said body.
Claim 2
Dependent Claim
72 words
A packing Element for sealing between the mandrel of well packers and the like and the casing in a well bore, said packing element comprising: a generally cylindrical body of deformable material, said body having an annular recess in its inner wall; and an annular member of substantially incompressible, deformable material located in said annular recess and engaging said body, said annular member sealingly engaging the mandrel upon deformation of said body.
Claim 3
Dependent Claim
17 words
The packing element of claim 1 wherein said annular member is more easily deformed than said body.
Claim 4
Dependent Claim
17 words
The packing element of claim 1 wherein said recess and annular member have substantially triangular cross sections.
Claim 5
Dependent Claim
17 words
The packing element of claim 1 wherein said recess and annular member have substantially semicircular cross sections.
Claim 6
Dependent Claim
102 words
An improved well packer including a mandrel, upper and lower anchoring means on the mandrel and means for setting the anchoring means in a well bore, the improvement comprising: a generally cylindrical packing body encircling the mandrel between the upper and lower anchoring means, said body, upon application of deformation forces, buckling into sealing engagement with the well bore wall and having an annular recess in its inner wall; and an annular member of substantially incompressible, deformable material located in said recess and encircling the mandrel and engaging said body, said annular member sealingly engaging the mandrel upon deformation of said body.
Claim 7
Dependent Claim
102 words
An improved well packer including a mandrel, upper and lower anchoring means on the mandrel and means for setting the anchoring means in a well bore, the improvement comprising: a generally cylindrical packing body encircling the mandrel between the upper and lower anchoring means, said body, upon application of deformation forces, buckling into sealing engagement with the well bore wall and having an annular recess in its inner wall; and an annular member of substantially incompressible, deformable material located in said recess and encircling the mandrel and engaging said body, said annular member sealingly engaging the mandrel upon deformation of said body.
Claim 8
Dependent Claim
27 words
The packer of claim 6 wherein said annular member is more easily deformable than said body and said annular recess and annular member have rectangular cross sections.
Claim 9
Dependent Claim
16 words
The packer of claim 6 wherein said recess and annular member have substantially triangular cross sections.
Claim 10
Dependent Claim
70 words
A packing element for well packers and the like, said packing element comprising: a generally cylindrical body of deformable material, said body having an annular recess in its inner wall; an annular member of deformable material located in said annular recess; an annular support member adjacent each end of said body, said support members being constructed of deformable material; and metallic reinforcing means supportingly engaging each of said support members.
Claim 11
Dependent Claim
70 words
A packing element for well packers and the like, said packing element comprising: a generally cylindrical body of deformable material, said body having an annular recess in its inner wall; an annular member of deformable material located in said annular recess; an annular support member adjacent each end of said body, said support members being constructed of deformable material; and metallic reinforcing means supportingly engaging each of said support members.
Claim 12
Dependent Claim
172 words
An improved well packer including a mandrel, upper and lower anchoring means on the mandrel and means for setting the anchoring means in a well bore, the improvement comprising: a generally cylindrical packing body encircling the mandrel between the upper and lower anchoring means, said body being deformable into sealing engagement with the well bore wall and having an annular recess with a substantially triangular cross section in its inner wall; an annular member of deformable material with a substantially triangular cross section located in said recess and encircling the mandrel, said annular member sealingly engaging the mandrel upon deformation of said body; an annular support member of deformable material located between said body and each of the upper and lower anchoring means; and a metallic reinforcing member located between said support members and each of the upper and lower anchoring means, said reinforcing members engaging the well bore wall upon deformation to support said support members and prevent axial extrusion of said body between said packer and the well bore wall.
Claim 13
Dependent Claim
172 words
An improved well packer including a mandrel, upper and lower anchoring means on the mandrel and means for setting the anchoring means in a well bore, the improvement comprising: a generally cylindrical packing body encircling the mandrel between the upper and lower anchoring means, said body being deformable into sealing engagement with the well bore wall and having an annular recess with a substantially triangular cross section in its inner wall; an annular member of deformable material with a substantially triangular cross section located in said recess and encircling the mandrel, said annular member sealingly engaging the mandrel upon deformation of said body; an annular support member of deformable material located between said body and each of the upper and lower anchoring means; and a metallic reinforcing member located between said support members and each of the upper and lower anchoring means, said reinforcing members engaging the well bore wall upon deformation to support said support members and prevent axial extrusion of said body between said packer and the well bore wall.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |