US3800875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wellbore gravel pack method
Assignee: Sunoco Inc
•
Filing: 1971-10-18
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Granted: 1974-04-02
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Expires: 1991-10-18
Abstract
Abstract Methods of gravel packing are disclosed utilizing controlled melting point materials with the gravel placed behind a liner located in the wellbore. The controlled melting point materials can be coated on the gravel prior to its placement behind the liner or circulated behind the liner separate from the gravel. After placement of the gravel and controlled melting point material behind the liner, heat is provided to melt the material so that it acts as a consolidating agent.
Inventors
- 👤 W Hardy
- 👤 J Shepard
- 👤 E Schultze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:49
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/04; E21B36/00; E21B43/025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
The process of claim 1 including flowing a gas through the aggregate while heat is being applied to maintain permeability.
Claim 2
Dependent Claim
23 words
The process of claim 1 wherein the controlled melting point material is selected from the group consisting of plastics, resin, glass or zinc.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein the aggregate is larger than the individual components of the unconsolidated formation.
Claim 4
Dependent Claim
24 words
The process of claim 1 including creating a cavity in the unconsolidated formation adjacent the wellbore prior to locating the aggregate in the wellbore.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |