Method and device for conveying chemicals through borehole

Details Method and device for conveying chemicals through borehole Method and device for conveying chemicals through borehole

1986-11-04

1988-01-26

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

166376, 166381, 166117, 166168, E21B 3313

Patent

active

047211598

ABSTRACT:
A capsule for conveying chemicals through a borehole for stopping lost circulation is totally made from a thermoplastic or fragile material or has a bottom plate made from such a material. The capsule containing the chemicals is let down until it reaches the location of the lost circulation, where the capsule is either destroyed by a drilling rod or softened by the high temperature and high pressure at the location. Thus, the chemicals are diffused.

REFERENCES:
patent: 1393311 (1921-10-01), Pendleton
patent: 1609534 (1926-12-01), Burton
patent: 2609880 (1952-09-01), Dyer
patent: 2635996 (1953-04-01), Rohrback et al.
patent: 2775302 (1956-12-01), Kirkpatrick
patent: 3129762 (1964-04-01), Cooper
patent: 3461960 (1969-08-01), Wilson
patent: 3760877 (1973-09-01), De Lajarte et al.
patent: 4191254 (1980-03-01), Baughman et al.
patent: 4640354 (1987-02-01), Boisson

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