You need JavaScript to view this

Device for controlling the hydraulic lifter of drilling unit

Abstract

A device is suggested for controlling the hydraulic lifter of a drilling unit. It contains a throttling valve with cylinder for servocontrol, mechanism for assigning the program for lowering velocity connected to the power cylinder, and oil tank. In order to improve the reliable concentration of the drilling unit by guaranteeing possible alternation for halting descent when the string falls on a projection in the well, the device is equipped with a normally open two-position hydraulically controlled distributor with spring return connected to the working surface of the power cylinder and valve connected to it with logical function of ILI for hydraulic control of the normally opened two-position distributor. The latter connects the working cavity of the servocontrol cylinder with the oil tank.
Authors:
Publication Date:
Apr 10, 1981
Product Type:
Patent
Report Number:
SU 819298
Reference Number:
EDB-83-123892
Resource Relation:
Patent File Date: Filed date 17 Jan 1979; Other Information: PAT-APPL-819298
Subject:
42 ENGINEERING; DRILLING EQUIPMENT; SPECIFICATIONS; HOISTS; HYDRAULIC CONTROL DEVICES; HYDRAULIC EQUIPMENT; SERVOMECHANISMS; CONTROL EQUIPMENT; EQUIPMENT; MATERIALS HANDLING EQUIPMENT; 420206* - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)
OSTI ID:
6106153
Country of Origin:
USSR
Language:
Russian
Availability:
Plenum Publishing Corp., New York, NY.
Submitting Site:
HEDB
Size:
Pages: v
Announcement Date:
Jan 01, 1983

Citation Formats

Kraskov, P N. Device for controlling the hydraulic lifter of drilling unit. USSR: N. p., 1981. Web.
Kraskov, P N. Device for controlling the hydraulic lifter of drilling unit. USSR.
Kraskov, P N. 1981. "Device for controlling the hydraulic lifter of drilling unit." USSR.
@misc{etde_6106153,
title = {Device for controlling the hydraulic lifter of drilling unit}
author = {Kraskov, P N}
abstractNote = {A device is suggested for controlling the hydraulic lifter of a drilling unit. It contains a throttling valve with cylinder for servocontrol, mechanism for assigning the program for lowering velocity connected to the power cylinder, and oil tank. In order to improve the reliable concentration of the drilling unit by guaranteeing possible alternation for halting descent when the string falls on a projection in the well, the device is equipped with a normally open two-position hydraulically controlled distributor with spring return connected to the working surface of the power cylinder and valve connected to it with logical function of ILI for hydraulic control of the normally opened two-position distributor. The latter connects the working cavity of the servocontrol cylinder with the oil tank.}
place = {USSR}
year = {1981}
month = {Apr}
}