Patent US3830299A successfully refreshed from Google Patents.
US3830299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shallow plugging selective re-entry well treatment
Assignee: Shell USA Inc
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Filing: 1973-05-21
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Granted: 1974-08-20
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Expires: 1993-05-21
Abstract
Abstract The pattern of fluid flow between a well and one or more subterranean reservoirs having different characteristics and/or fluid content is adjusted by determining the flow pattern, plugging all of the reservoirs with plugging material deposited internally within a few inches from the well borehole, and then perforating some or all of the plugged portions with openings that are arranged in relation to the determined flow pattern to provide selected rates of flow at selected depths.
Inventors
- 👤 J Thomeer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:48
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/261; E21B43/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
86 words
A process for adjusting the fluid flow profile of a well that communicates with subterranean zones or reservoirs, which process comprises: determining the variation in flow capability with depth within the well; plugging each of the zones or reservoirs internally with plugging materials that are deposited within a few inches of the well borehole; and selectively perforating the plugged portions by forming openings through them that are arranged in relation to the determined variations in flow capability to permit selected rates of flow at selected depths.
Claim 2
Dependent Claim
86 words
A process for adjusting the fluid flow profile of a well that communicates with subterranean zones or reservoirs, which process comprises: determining the variation in flow capability with depth within the well; plugging each of the zones or reservoirs internally with plugging materials that are deposited within a few inches of the well borehole; and selectively perforating the plugged portions by forming openings through them that are arranged in relation to the determined variations in flow capability to permit selected rates of flow at selected depths.
Claim 3
Dependent Claim
26 words
The process of claim 1 in which said openings are arranged to permit a relatively greater flow rates at depths of determined relatively low flow capabilities.
Claim 4
Dependent Claim
25 words
The process of claim 1 in which said openings are arranged to permit relatively lower flow rates at deptsh of determined relatively high flow capabilities.
Claim 5
Dependent Claim
39 words
The process of claim 1 in which: said openings are first formed only at depths of relatively low determined flow capabilities; at least one stimulating fluid is injected through the openings, and openings are subsequently formed at other depths.
Claim 6
Dependent Claim
37 words
The process of claim 1 in which: said openings are first formed only at depths of relatively high determined flow capability; at least one permeability reducing material is injected; and openings are subsequently formed at other depths.
Claim 7
Dependent Claim
13 words
The process of claim 1 in which the well is an injection well.
Claim 8
Dependent Claim
13 words
The process of claim 1 in which the well is a production well.
Claim 9
Dependent Claim
18 words
The process of claim 1 in which the well contains an uncased borehole along said zones or reservoirs.
Claim 10
Dependent Claim
18 words
The process of claim 1 in which one well contains a cased borehole along said zones or reservoirs.
Claim 11
Dependent Claim
37 words
The process of claim 1 in which the well is a production well and said openings are arranged to permit substantially no flow at depths at which the fluid that can be produced has an undesired composition.
Claim 12
Dependent Claim
26 words
The process of claim 1 in which said openings are arranged to permit relatively greater rates of flow at depths of determined relaTively high flow capability.
Claim 13
Dependent Claim
26 words
The process of claim 1 in which said openings are arranged to permit relatively greater rates of flow at deptsh of determined relatively low flow capability.
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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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |