Wash tool for well having perforated casing

摘要: A washing tool (24) attached to the lower end of a pipe string (18) includes mandrel (28) between upper and subs (30, 32). The has opposed spaced sections (54 56) connected with an intermediate section (58). Each (54, fluid inflatable elastomeric packer (64) thereon at relatively low pressure, (58) leaf spring (86) over port (84) which is opened by outward movement second higher predetermined pressure within (18).