US3891031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means for deep-well
Assignee: Individual
•
Filing: 1974-02-04
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Granted: 1975-06-24
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Expires: 1994-02-04
Abstract
Abstract A sealing means to be employed to seal a wall section of a deepwell is disclosed. Said sealing means is formed by a seal carrier, solidary of the upper end of the pump; an outer sealing element carried by said carrier and covering this latter; O-ring means at said carrier; an elastic seal coupled to said outer sealing element; all of these constituting a lower end seal; and an upper end seal of resilient nature, and formed by the same elements as the lower one. Said sealing means are suitable to seal and isolate said wall section in order this to be used as the discharge conductor for said well.
Inventors
- 👤 Carlos Mayer Ortiz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:20
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B43/00; E21B43/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
188 words
In a sealing means for a wall of a deep-well, a well head, a pump device having an upper end, the sealing means being suitable to connect the wall in a tight manner to the upper end of the pump device, a supporting string supporting the pump device; a seal carrier means solidarily coupled to the upper end of said pump device and in fluid-flow relationship with the interior thereof; an outer sealing device arranged to cover said carrier means; a plurality of O-ring seals carried by said carrier means; said O-rings being disposed to make a tight joint between said carrier means and said outer sealing device; an elastic sealing device coupled to said outer sealing device, being disposed to extend from the latter toward the wall of the well, and uniting in a tight manner said outer sealing device and said wall; and elastic sealing means located at the uppermost point of the well; whereby a section of the wall interposed between said elastic sealing means and the wellhead is isolated from the bottom of the well and disposed to be employed as a discharge casing.
Claim 2
Dependent Claim
188 words
In a sealing means for a wall of a deep-well, a well head, a pump device having an upper end, the sealing means being suitable to connect the wall in a tight manner to the upper end of the pump device, a supporting string supporting the pump device; a seal carrier means solidarily coupled to the upper end of said pump device and in fluid-flow relationship with the interior thereof; an outer sealing device arranged to cover said carrier means; a plurality of O-ring seals carried by said carrier means; said O-rings being disposed to make a tight joint between said carrier means and said outer sealing device; an elastic sealing device coupled to said outer sealing device, being disposed to extend from the latter toward the wall of the well, and uniting in a tight manner said outer sealing device and said wall; and elastic sealing means located at the uppermost point of the well; whereby a section of the wall interposed between said elastic sealing means and the wellhead is isolated from the bottom of the well and disposed to be employed as a discharge casing.
Claim 3
Dependent Claim
16 words
Sealing means according to claim 1, wherein said outer sealing device is a cylindrical rigid seal.
Claim 4
Dependent Claim
33 words
Sealing means according to claim 1, wherein said outer sealing device is formed with an outer peripheral land, extending normal to said sealing device; and with said elastic sealing device being connected thereto.
Claim 5
Dependent Claim
18 words
Sealing means according to claim 1, wherein said elastic sealing device comprises a plurality of flared resilient seals.
Claim 6
Dependent Claim
26 words
Sealing means according to claim 1, wherein support means are provided supporting said outer sealing device independently from said pump device and said seal carrier means.
Claim 7
Dependent Claim
30 words
Sealing means according to claim 5, wherein said outer sealing device is a cylindrical seal; said support means are constituted by a plurality of rods connected to said cylindrical seal.
Claim 8
Dependent Claim
39 words
Sealing means according to claim 6, wherein said cylindrical seal includes a land; the coupling of said support means is effected through holes provided at the land of said cylindrical seal, and by the use of suitable fastening elements.
References Cited (Backward Citations)
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Cited
US2205421A
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US2242166A
Cited
US2900028A
Cited
US2800085A
Cited
US3399548A
Cited
US3721296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |