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Core barrel inner tube lifter

Patent:

Abstract

A core drill with means for selectively lifting a core barrel inner tube consists of a lifting means connected to the core barrel inner tube assembly. It has a closable passage to permit drilling fluid normally to pass through it. The lifting means has a normally downward facing surface and a means to direct drilling fluid pressure against that surface so that on closure of the passage to fluid flow, the pressure of the drilling fluid is caused to act selectively on it. This causes the lifting means to rise and lift the core barrel. (7 claims)
Authors:
Publication Date:
Jul 16, 1968
Product Type:
Patent
Report Number:
ZA 68/12071207
Reference Number:
EDB-82-054500
Resource Relation:
Patent Priority Date: Priority date 2 Mar 1967, Australia
Subject:
02 PETROLEUM; CORING EQUIPMENT; DESIGN; DRILLING EQUIPMENT; OIL WELLS; WELL DRILLING; DRILLING; EQUIPMENT; WELLS; 020300* - Petroleum- Drilling & Production
OSTI ID:
5706273
Country of Origin:
South Africa
Language:
English
Submitting Site:
TUL
Size:
Pages: v
Announcement Date:

Patent:

Citation Formats

Jeffers, J P. Core barrel inner tube lifter. South Africa: N. p., 1968. Web.
Jeffers, J P. Core barrel inner tube lifter. South Africa.
Jeffers, J P. 1968. "Core barrel inner tube lifter." South Africa.
@misc{etde_5706273,
title = {Core barrel inner tube lifter}
author = {Jeffers, J P}
abstractNote = {A core drill with means for selectively lifting a core barrel inner tube consists of a lifting means connected to the core barrel inner tube assembly. It has a closable passage to permit drilling fluid normally to pass through it. The lifting means has a normally downward facing surface and a means to direct drilling fluid pressure against that surface so that on closure of the passage to fluid flow, the pressure of the drilling fluid is caused to act selectively on it. This causes the lifting means to rise and lift the core barrel. (7 claims)}
place = {South Africa}
year = {1968}
month = {Jul}
}