| 摘要 |
Methods and apparatus for cultivating a surface of a wall of a subterranean well bore, conduit or cable by scraping and furrowing the surface using a string hoistable shaft carrying a flexible arrangement of a laterally extendable and retractable arcuate engagement linkage dragging a cutter and scraper member, wherein said engagement linkage arcuately engages and aligns the cutter and scraper member during one or more scraping engagements: along said surface and longitudinal to a well axis to form and use said furrow, across said surface and transverse to said well axis using a filament linkage to form and use said furrow, or along and across said surface and longitudinal and transverse to said well axis to form and use a lattice of said furrows, separating a plane of the surface into a plurality of planes that comprise separate surface regions, usable by an ancillary apparatus or a spreadable substance. |
