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Device for two-stage cementing of casing

Patent:

Abstract

A device is claimed for two-stage cementing of casing. It consists of a body with lateral plugging vents, upper and lower movable sleeves, a check valve with axial channels that's situated in the lower sleeve, and a displacement limiting device for the lower sleeve. To improve the cementing process of the casing by preventing overflow of cementing fluids from the annular space into the first stage casing, the limiter is equipped with a spring rod that is capable of covering the axial channels of the check valve while it's in an operating mode. In addition, the rod in the upper part is equipped with a reinforced area under the axial channels of the check valve.
Publication Date:
Jan 01, 1981
Product Type:
Patent
Report Number:
SU 2866072/22-0322-03
Reference Number:
EDB-83-174614
Resource Relation:
Patent File Date: Filed date 7 Jan 1980; Other Information: PAT-APPL-874983
Subject:
02 PETROLEUM; 03 NATURAL GAS; CEMENTING; MATERIALS HANDLING EQUIPMENT; DESIGN; NATURAL GAS WELLS; WELL CASINGS; OIL WELLS; DRILLING FLUIDS; OPERATION; PLUGGING AGENTS; RODS; SLEEVES; USSR; VALVES; ASIA; CONTROL EQUIPMENT; EASTERN EUROPE; EQUIPMENT; EUROPE; FLOW REGULATORS; FLUIDS; WELLS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing
OSTI ID:
5856232
Country of Origin:
USSR
Language:
Russian
Availability:
Plenum Publishing Corp., New York, NY.
Submitting Site:
HEDB
Size:
Pages: v
Announcement Date:

Patent:

Citation Formats

Kudimov, D A, Goncharevskiy, Ye N, Luneva, L G, Shchelochkov, S N, Shil'nikova, L N, Tereshchenko, V G, Vasiliev, V A, Volkova, V V, and Zhdokov, K I. Device for two-stage cementing of casing. USSR: N. p., 1981. Web.
Kudimov, D A, Goncharevskiy, Ye N, Luneva, L G, Shchelochkov, S N, Shil'nikova, L N, Tereshchenko, V G, Vasiliev, V A, Volkova, V V, & Zhdokov, K I. Device for two-stage cementing of casing. USSR.
Kudimov, D A, Goncharevskiy, Ye N, Luneva, L G, Shchelochkov, S N, Shil'nikova, L N, Tereshchenko, V G, Vasiliev, V A, Volkova, V V, and Zhdokov, K I. 1981. "Device for two-stage cementing of casing." USSR.
@misc{etde_5856232,
title = {Device for two-stage cementing of casing}
author = {Kudimov, D A, Goncharevskiy, Ye N, Luneva, L G, Shchelochkov, S N, Shil'nikova, L N, Tereshchenko, V G, Vasiliev, V A, Volkova, V V, and Zhdokov, K I}
abstractNote = {A device is claimed for two-stage cementing of casing. It consists of a body with lateral plugging vents, upper and lower movable sleeves, a check valve with axial channels that's situated in the lower sleeve, and a displacement limiting device for the lower sleeve. To improve the cementing process of the casing by preventing overflow of cementing fluids from the annular space into the first stage casing, the limiter is equipped with a spring rod that is capable of covering the axial channels of the check valve while it's in an operating mode. In addition, the rod in the upper part is equipped with a reinforced area under the axial channels of the check valve.}
place = {USSR}
year = {1981}
month = {Jan}
}