Down-hole pump and inflatable packer apparatus
Patent
·
OSTI ID:6651477
A down-hole pump and inflatable packer apparatus are described for use with tubular members in a well bore for isolating a desired zone or zones at one or more depths in a well bore without the necessity of removing the apparatus from the well bore. The apparatus includes pump structure which employs a tubular pump piston longitudinally reciprocable within the apparatus in response to the rotation of a pump driving mandrel within the apparatus by the tubular members to which the apparatus is connected. The pump piston is connected to the pump-driving mandrel by means of cam follower lugs formed on the pump piston which are engaged with corresponding camming grooves or slots formed in the pump driving mandrel. The pump intake or exhaust check valve assemblies each employ a number of annular valve seal rings of V-shaped cross section and formed of relatively flexible material to form a one-way check valve structure. (20 claims)
- Assignee:
- Halliburton Co
- Patent Number(s):
- US 3926254
- OSTI ID:
- 6651477
- Country of Publication:
- United States
- Language:
- English
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