Patent US5050677A successfully refreshed from Google Patents.
US5050677A
Expired / Lapsed
US
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Well construction method
Assignee: MWR Inc
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Filing: 1991-01-07
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Granted: 1991-09-24
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Expires: 2011-01-07
Abstract
Abstract A method of constructing a well into which conduit is inserted to inject air or to withdraw contaminated fluid from an underground plume. The method involves forming a borehole of a specified depth and partially filling the hole with a material of high fluid porosity. After the conduit is inserted into the borehole, the remainder of the hole is filled with the high porosity material and the well is surface capped to prevent leakage.
Inventors
- 👤 Frederick C. Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:38
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/04; B; B09; B09C; B09C1/00; B09C1/005
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
A method of constructing a well comprising the steps of: (a) drilling a bore hole of a pre-determined depth into a sector of earth; (b) partially filling said bore hole with a fill material to form a layer which is highly fluid permeable; (c) packing said bore hole with a filter material on top of said fill material, said filter material constituting means for stabilizing said fill material against mobilization into an end of a conduit, then inserting a conduit into said bore hole to a depth terminating above that of said layer and into said filter material; (d) filling the remainder of said bore hole about said conduit with said fill material to substantially ground level; and (e) placing a fluid impermeable cap about said conduit to seal the bore hole against fluid leakage.
Claim 2
Independent Claim
135 words
A method of constructing a well comprising the steps of: (a) drilling a bore hole of a pre-determined depth into a sector of earth; (b) partially filling said bore hole with a fill material to form a layer which is highly fluid permeable; (c) packing said bore hole with a filter material on top of said fill material, said filter material constituting means for stabilizing said fill material against mobilization into an end of a conduit, then inserting a conduit into said bore hole to a depth terminating above that of said layer and into said filter material; (d) filling the remainder of said bore hole about said conduit with said fill material to substantially ground level; and (e) placing a fluid impermeable cap about said conduit to seal the bore hole against fluid leakage.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein said fill material includes pea gravel.
References Cited (Backward Citations)
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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) | 1994-09-23 | 1995-03-25 | 1995-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-23 | 1999-03-25 | 1999-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-23 | 2003-03-25 | 2003-09-24 | $7700.00 | Window Closed / Lapsed |