Patent US3598183A successfully refreshed from Google Patents.
US3598183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating wells
Assignee: Jackson Memorial Hospital
•
Filing: 1969-09-29
•
Granted: 1971-08-10
•
Expires: 1989-09-29
Abstract
Abstract A method of preventing the flow of fluid into a low-pressure zone of earth formation traversed by a well bore when said fluid is placed in the well bore, in which a liner is temporarily employed to block off said low pressure zone. Apparatus for performing such method in which the liner is provided with a bypass valve, opposing packers, and a releasable connection with a running in string of pipe.
Inventors
- 👤 Lyle B Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:33
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/004; E21B23/006; E21B23/06; E21B33/00; E21B33/10; E21B33/12; E21B33/124
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
The method of treating a well having a low-pressure zone spaced from a zone to be treated, including the steps of running into the well a pipe string having a liner releasably carried thereby and also having a packer carried thereby, locating said liner at said low-pressure zone on said pipe string, releasing said liner from said pipe string and straddling said low-pressure zone with said liner, moving said pipe string in said well, setting said packer, treating said well by placing fluid in said zone to be treated, releasing said packer, moving said pipe string and reconnecting said liner to said pipe string, and removing said pipe string and said liner from the well.
Claim 2
Independent Claim
115 words
The method of treating a well having a low-pressure zone spaced from a zone to be treated, including the steps of running into the well a pipe string having a liner releasably carried thereby and also having a packer carried thereby, locating said liner at said low-pressure zone on said pipe string, releasing said liner from said pipe string and straddling said low-pressure zone with said liner, moving said pipe string in said well, setting said packer, treating said well by placing fluid in said zone to be treated, releasing said packer, moving said pipe string and reconnecting said liner to said pipe string, and removing said pipe string and said liner from the well.
Claim 3
Dependent Claim
25 words
The method of claim 1, including circulating a flushing fluid into said well and from said well before removing said pipe string and said liner.
Claim 4
Dependent Claim
53 words
The method of claim 1, wherein said low-pressure zone is above said zone to be treated, and including the step of loading with fluid the space between said liner and said string of pipe and between said string of pipe and the well wall above said packer, in advance of treating said well.
Claim 5
Dependent Claim
83 words
The method of claim 1, wherein said low-pressure zone is above said zone to be treated, and including the step of loading with fluid the space between said liner and said string of pipe and between said string of pipe and the well wall above said packer, in advance of treating said well, and the step of circulating fluid through said pipe string and to the top of the well after releasing said packer and before removing said pipe string and said liner.
Claim 6
Dependent Claim
55 words
The method of claim 1, wherein a bridge plug is releasably carried by said packer, and including the additional steps of moving said pipe string in said well, setting said bridge plug and releasing said bridge plug from said packer before said steps of moving said pipe string in said well and setting said packer.
References Cited (Backward Citations)
US1861332A
Cited
US2098494A
Cited
US2649916A
Cited
US2806532A
Cited
US2973035A
Cited
US3361204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |