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Core lifter

Abstract

A core lifter is suggested which contains a housing, core-clamping elements installed in the housing depressions in the form of semirings with projections on the outer surface restricting the rotation of the semirings in the housing depressions. In order to improve the strength and reliability of the core lifter, the semirings have a variable transverse section formed from the outside by the surface of the rotation body of the inner arc of the semiring aroung the rotation axis and from the inner a cylindrical surface which is concentric to the outer arc of the semiring. The core-clamping elements made in this manner have the possibility of freely rotating in the housing depressions under their own weight and from contact with the core sample. These semirings do not have weakened sections, have sufficient strength, are inserted into the limited ring section of the housing of the core lifter without reduction in its through opening and this improve the reliability of the core lifter in operation.
Publication Date:
Feb 15, 1981
Product Type:
Patent
Report Number:
SU 2717507
Reference Number:
EDB-83-064761
Resource Relation:
Patent File Date: Filed date 22 Jan 1979; Other Information: PAT-APPL-802518
Subject:
02 PETROLEUM; 03 NATURAL GAS; 42 ENGINEERING; DRILL CORES; TRANSPORT; FASTENERS; POSITIONING; RINGS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing; 420206 - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)
OSTI ID:
6498549
Country of Origin:
USSR
Language:
Russian
Availability:
Plenum Publishing Corp., New York, NY.
Submitting Site:
HEDB
Size:
Pages: v
Announcement Date:

Citation Formats

Pavlov, N G, and Edel'man, Ya A. Core lifter. USSR: N. p., 1981. Web.
Pavlov, N G, & Edel'man, Ya A. Core lifter. USSR.
Pavlov, N G, and Edel'man, Ya A. 1981. "Core lifter." USSR.
@misc{etde_6498549,
title = {Core lifter}
author = {Pavlov, N G, and Edel'man, Ya A}
abstractNote = {A core lifter is suggested which contains a housing, core-clamping elements installed in the housing depressions in the form of semirings with projections on the outer surface restricting the rotation of the semirings in the housing depressions. In order to improve the strength and reliability of the core lifter, the semirings have a variable transverse section formed from the outside by the surface of the rotation body of the inner arc of the semiring aroung the rotation axis and from the inner a cylindrical surface which is concentric to the outer arc of the semiring. The core-clamping elements made in this manner have the possibility of freely rotating in the housing depressions under their own weight and from contact with the core sample. These semirings do not have weakened sections, have sufficient strength, are inserted into the limited ring section of the housing of the core lifter without reduction in its through opening and this improve the reliability of the core lifter in operation.}
place = {USSR}
year = {1981}
month = {Feb}
}