Apparatus for discharging fluent substances into well bores
A well-completion tool has a reservoir adapted to contain a fluent substance to be discharged into a well bore. An extendible flow diverter is mounted around the tool and normally secured in a retracted position by a selectively-operable latch. Upon reaching a desired position in a well bore containing fluids, the latch is actuated to release the diverter for movement by first biasing means to its extended position. Thereafter, continued movement of the tool along the well bore will induct well-bore fluids into the reservoir ahead of the diverter to displace fluent substances from the reservoir and into the well bore behind the diverter. When the fluent substances are exhausted, the first biasing means are selectively disabled and second biasing means will return the diverter to its retracted position. When the tool also includes a well perforator, selectively- operable switching means may also be provided for arming the perforator upon extension of the diverter. (30 claims)
- Assignee:
- Schlumberger technol Corp.
- Patent Number(s):
- US 3433302
- OSTI ID:
- 5481694
- Country of Publication:
- United States
- Language:
- English
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