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US 8,136,587 B2Granted
Slickline conveyed tubular scraper system
AssigneeBaker Hughes Incorporated
InventorsGerald D. Lynde, Yang Xu
Life of this patent
Estimating the term…
Abstract
A downhole tubular scraper is run in on slickline with an on board power supply. It features counter-rotating scrapers without an anchor in one embodiment or an anchor with single rotating scrapers. The scraper is selectively operated to conserve power in the power supply. A drive system uses a single driver to obtain counter-rotating motion in the scrapers.
Claims7
A scraper assembly for downhole use, comprising:
- a housing and a slickline to suspend said housing downhole;
- a power supply;
- a scraper assembly comprising at least one scraper that rotates when driven by a motor supported by said housing and powered by said power supply.
A scraper assembly for downhole use, comprising:
- a housing and a slickline to suspend said housing downhole;
- a power supply;
- a rotating scraper assembly driven by a motor supported by said housing and powered by said power supply;
- said scraper assembly further comprises subassemblies rotated by said motor simultaneously in opposed directions.
1 more element
Dependencies are inferred from the claim text.