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Hydraulic hammer acting during lowering of casing

Journal Article:

Abstract

The Berzheron method is used to determine the pressure generated in a well when casing is being lowered. The generated pressure is caused by flow of liquid displaced by the casing. Such liquid flow is transient and is described by unsteady-state type of equations, which are solved graphically. The graphical solution is rapid and relatively simple. Application of the solution to a specific example is shown. Conclusions from this study are: (1) collapse of casing can occur during the lowering operation, previous to time of landing; (2) both casing collapse and breakage of the check valve in the casing are caused by excessive lowering speed of large-diameter casing and the resulting high pressure; and (3) during the lowering operation, pressure varies in the well and such pressure variation can cause wall damage, water-gas appearance, and formation fracturing.
Publication Date:
Nov 01, 1968
Product Type:
Journal Article
Reference Number:
EDB-82-076273
Resource Relation:
Journal Name: Neft. Khoz.; (USSR); Journal Volume: No. 1968:11
Subject:
02 PETROLEUM; 03 NATURAL GAS; NATURAL GAS WELLS; WELL CASINGS; OIL WELLS; COMPRESSION; DAMAGE; EMPLACEMENT; FAILURES; FLUID FLOW; HYDRAULIC FRACTURING; LIQUIDS; PRESSURIZING; WATER INFLUX; WELL COMPLETION; WELL PRESSURE; WELL SERVICING; COMMINUTION; FLUIDS; FRACTURING; RESERVOIR PRESSURE; WELLS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing
OSTI ID:
5517615
Country of Origin:
USSR
Language:
Russian
Other Identifying Numbers:
Journal ID: CODEN: NEKHA
Submitting Site:
TUL
Size:
Pages: 15-19
Announcement Date:
Aug 01, 1980

Journal Article:

Citation Formats

Sidorov, N A, Bondarev, V I, and Lebedev, O A. Hydraulic hammer acting during lowering of casing. USSR: N. p., 1968. Web.
Sidorov, N A, Bondarev, V I, & Lebedev, O A. Hydraulic hammer acting during lowering of casing. USSR.
Sidorov, N A, Bondarev, V I, and Lebedev, O A. 1968. "Hydraulic hammer acting during lowering of casing." USSR.
@misc{etde_5517615,
title = {Hydraulic hammer acting during lowering of casing}
author = {Sidorov, N A, Bondarev, V I, and Lebedev, O A}
abstractNote = {The Berzheron method is used to determine the pressure generated in a well when casing is being lowered. The generated pressure is caused by flow of liquid displaced by the casing. Such liquid flow is transient and is described by unsteady-state type of equations, which are solved graphically. The graphical solution is rapid and relatively simple. Application of the solution to a specific example is shown. Conclusions from this study are: (1) collapse of casing can occur during the lowering operation, previous to time of landing; (2) both casing collapse and breakage of the check valve in the casing are caused by excessive lowering speed of large-diameter casing and the resulting high pressure; and (3) during the lowering operation, pressure varies in the well and such pressure variation can cause wall damage, water-gas appearance, and formation fracturing.}
journal = {Neft. Khoz.; (USSR)}
volume = {No. 1968:11}
journal type = {AC}
place = {USSR}
year = {1968}
month = {Nov}
}