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Method for preventing plugging of water wells by clay

Journal Article:

Abstract

A method is suggested for preventing the plugging of water-bearing sands by clay from drilling fluids. It consists in placing a cement plug in the upper nipple above the filter, in order to prevent its plugging during the installation. The drilling mud passes through the rinsing windows and fills the internal void of the filter column, thus preventing further percolation and plugging of the filter during its lowering. When a 2-filter column is lowered, the clay solution is pumped into the interval between the cement plug and the next filter; this is done gradually in proportion to the addition of new pipes. When the drilling mud level lowers in the annular space between the pipes, the mud cake, together with water-saturated sand, passes through the rinsing windows into the pipes and is removed to the surface by airlift or other methods. This procedure is described in detail, discussed for various conditions of well structure, and illustrated by schematic drawings. Its advantage is in the possibility of separate testing and production of all water-bearing zones in the well, and it does not require the use of pure water for well washing.
Authors:
Publication Date:
Jan 01, 1966
Product Type:
Journal Article
Reference Number:
EDB-81-072073
Resource Relation:
Journal Name: Razved. Okhr. Nedr; (USSR); Journal Volume: 10
Subject:
02 PETROLEUM; WELLS; CLEANING; PLUGGING; ARTIFICIAL LIFTS; CLAYS; MINERALS; 020300* - Petroleum- Drilling & Production
OSTI ID:
6383774
Country of Origin:
USSR
Language:
Russian
Other Identifying Numbers:
Journal ID: CODEN: RZONA
Submitting Site:
TUL
Size:
Pages: 32-36
Announcement Date:

Journal Article:

Citation Formats

Blazhkov, V I. Method for preventing plugging of water wells by clay. USSR: N. p., 1966. Web.
Blazhkov, V I. Method for preventing plugging of water wells by clay. USSR.
Blazhkov, V I. 1966. "Method for preventing plugging of water wells by clay." USSR.
@misc{etde_6383774,
title = {Method for preventing plugging of water wells by clay}
author = {Blazhkov, V I}
abstractNote = {A method is suggested for preventing the plugging of water-bearing sands by clay from drilling fluids. It consists in placing a cement plug in the upper nipple above the filter, in order to prevent its plugging during the installation. The drilling mud passes through the rinsing windows and fills the internal void of the filter column, thus preventing further percolation and plugging of the filter during its lowering. When a 2-filter column is lowered, the clay solution is pumped into the interval between the cement plug and the next filter; this is done gradually in proportion to the addition of new pipes. When the drilling mud level lowers in the annular space between the pipes, the mud cake, together with water-saturated sand, passes through the rinsing windows into the pipes and is removed to the surface by airlift or other methods. This procedure is described in detail, discussed for various conditions of well structure, and illustrated by schematic drawings. Its advantage is in the possibility of separate testing and production of all water-bearing zones in the well, and it does not require the use of pure water for well washing.}
journal = {Razved. Okhr. Nedr; (USSR)}
volume = {10}
journal type = {AC}
place = {USSR}
year = {1966}
month = {Jan}
}