US3835929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for protecting electrical cable for downhole electrical pump service
Assignee: Shell USA Inc
•
Filing: 1972-08-17
•
Granted: 1974-09-17
•
Expires: 1992-08-17
Abstract
Abstract Leak proof protection is provided for electrical cable used in supplying power to electrically driven pumps installed in subterranean wells by inserting the cable into length(s) of coiled tubing and including seal means at the lower end.
Inventors
- 👤 G Suman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:10
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/003; E21B17/10; E21B17/1035
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
A method of installing multiple conductor electric cable into armoring means for use in a subterranean well comprising the steps of: lowering coiled tubing into the well bore to a depth approximately equal to the pump setting depth; inserting the lower end of a multiple conductor electric cable into the coiled tubing at its upper end; attaching gripping means about the circumference of the cable and along a sufficient length of the cable; applying sufficient force through said gripping means to the cable thereby forcing the lower end of said cable through said tubing; and installing a tubing plug in the lower end of said coiled tubing prior to lowering said coiled tubing into the well bore lower end first.
Claim 2
Independent Claim
120 words
A method of installing multiple conductor electric cable into armoring means for use in a subterranean well comprising the steps of: lowering coiled tubing into the well bore to a depth approximately equal to the pump setting depth; inserting the lower end of a multiple conductor electric cable into the coiled tubing at its upper end; attaching gripping means about the circumference of the cable and along a sufficient length of the cable; applying sufficient force through said gripping means to the cable thereby forcing the lower end of said cable through said tubing; and installing a tubing plug in the lower end of said coiled tubing prior to lowering said coiled tubing into the well bore lower end first.
Claim 3
Independent Claim
154 words
A method of installing tubing armored electrical cable in a subterranean well comprising the steps of: unreeling coiled tubing and lowering said tubing into the well bore to a depth approximately equal to the pump setting depth; inserting a multiple conductor electrical cable into said tubing to a depth approximately equal to the pump setting depth; pulling said tubing and said cable from said well bore and re-reeling said tubing and said cable as a single unit; mating a downhole motor and pump assembly with a production tubing string; electrically connecting said electrical cable to said motor; sealably connecting said tubing armored electrical cable to said downhole motor preventing intrusion of gaseous mixtures from the surrounding environment; lowering said production tubing and tubing armored cable into said well bore; and clamping said tubing armored cable to said production tubing thereby maintaining said tubing armored cable and said production tubing in a substantially parallel relationship.
Claim 4
Independent Claim
154 words
A method of installing tubing armored electrical cable in a subterranean well comprising the steps of: unreeling coiled tubing and lowering said tubing into the well bore to a depth approximately equal to the pump setting depth; inserting a multiple conductor electrical cable into said tubing to a depth approximately equal to the pump setting depth; pulling said tubing and said cable from said well bore and re-reeling said tubing and said cable as a single unit; mating a downhole motor and pump assembly with a production tubing string; electrically connecting said electrical cable to said motor; sealably connecting said tubing armored electrical cable to said downhole motor preventing intrusion of gaseous mixtures from the surrounding environment; lowering said production tubing and tubing armored cable into said well bore; and clamping said tubing armored cable to said production tubing thereby maintaining said tubing armored cable and said production tubing in a substantially parallel relationship.
References Cited (Backward Citations)
US1629329A
Cited
US2297020A
Cited
US2677427A
Cited
US2720266A
Cited
US3212582A
Cited
US3301531A
Cited
US3373818A
Cited
US3401749A
Cited
US3394760A
Cited
US3525401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |