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TECHNICAL PAPERS

Chemical Plug for Zone Isolation in Horizontal Wells

[+] Author and Article Information
D. D. Mamora, F. M. Platt

Department of Petroleum Engineering, Texas A&M University, College Station, TX 77843-3116

N. F. Saavedra

Ecopetrol, Apartado Aereo 4185, Bucaramanga, Colombia

D. B. Burnett

Westport Technology Center International, 6700 Portwest Drive, Houston, TX 77024

J. Energy Resour. Technol 121(1), 40-44 (Mar 01, 1999) (5 pages) doi:10.1115/1.2795058 History: Received August 01, 1997; Revised August 17, 1998; Online November 06, 2007

Abstract

A laboratory study has been conducted on the use of chemical plugs, instead of conventional mechanical packers, to isolate water and gas-producing zones in horizontal wells. Results of experiments using horizontal wellbore models, consisting of PVC pipes internally lined with sand, indicate that slumping of the chemical plug could be avoided if the plug were spotted in a viscous brine pill. Of the three chemicals tested, a monomer, a polyacrylamide, and a plastic, only the plastic plug had a sufficiently high holding pressure. Research is being continued using a full-scale horizontal wellbore model.

Copyright © 1999 by The American Society of Mechanical Engineers
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