Title: Well tubing protective fluid injection system

Abstract: A down-the-hole well tubing protective fluid system, with an injection valve in fluid communication with a ported nipple above a packer assembly, for introduction of protective fluid to the tubing bore. The system includes a concentric protective fluid flow path, extended for fluid flow to below the injection nose and through the bore of the packer, and packer tail pipe for introduction of protective fluid into the well-producing flow path below the packer, to provide protection for the packer assembly, inside and outside, below the packer seal, the injection nose, and the injection valve tail pipe. When the injection tail pipe nose is installed to extend below the lower end of the packer tail pipe, the turbulence caused by production fluid entering the tail pipe nose carries diluted chemical fluid mix up, and around, the outside of the packer tail pipe.

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Inventors: Arendt, Henry P. (Dallas, TX, US)

Application Number: 564276
Filing Date: 1975-04-02
Publication_date: 1976-02-03
Assignee: Otis Engineering Corporation (Dallas, TX)
Primary Class(es): 166/184
Other Classes:
US Patent Ref:

2389985	Nov, 1945	Justice et al.	166/131.
3044553	Jul, 1962	Bradley	166/131.
3583481	Jun, 1971	Vernotzy	166/184.
3853177	Dec, 1974	Mott	166/184.

Other Refs:
Primary Examiner: Leppink, James A.
Assistant Examiner:
Attorney: Kintzinger; Warren H.