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Title: Controlling formation fines at their sources to maintain well productivity

Abstract

Migration of formation fines has been shown to cause production decline in many wells. Despite the availability of new downhole tools for use in well stimulation and completion, the ability to sustain desired production levels is often plagued with fines migration problems. The solution to this problem is appropriate treatment to mitigate fines migration at its source. This paper describes the use of an ultra-thin tackifying agent (UTTA) for stabilizing fines in high-rate producing or injection wells. This UTTA is applied as part of an initial prepad in fracturing or gravel-packing operations, as a remedial treatment, or as a post-treatment following acid fracturing or matrix acidizing treatments. The primary purpose of UTTA application is to immobilize formation fines so that they will not detach, migrate with flowing fluids, plug the pore channels, and reduce the flow path permeability. Results of laboratory testing indicate that the UTTA system is applicable to most types of formation fines, including coals, sandstones, and carbonates. Once injected into the formation matrix or proppant pack, the UTTA forms a thin film on formation surfaces, encapsulating the fines. Capillary action helps pull the tackifier into the contact points, fixing the particulate in place without plugging the poremore » throat. The UTTA does not require a shut-in time after its application. The thin film tackifier does not harden, but remains flexible, enhancing the ability of a formation to withstand stress cycling and allowing the formation to handle high shear stress during high flow rates.« less

Authors:
; ; ; ;  [1]
  1. Haliburton Technology Center, Duncan, OK (United States)
Publication Date:
OSTI Identifier:
20939520
Resource Type:
Journal Article
Resource Relation:
Journal Name: SPE Production and Operations; Journal Volume: 22; Journal Issue: 2
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; WELL DRILLING; COAL FINES; SANDSTONES; CARBONATES; INHIBITION; MIGRATION; PRODUCTIVITY; INJECTION; THIN FILMS; COATINGS

Citation Formats

Nguyen, P.D., Weaver, J.D., Rickman, R.D., Dusterhoft, R.G., and Parker, M.A.. Controlling formation fines at their sources to maintain well productivity. United States: N. p., 2007. Web. doi:10.2118/97659-PA.
Nguyen, P.D., Weaver, J.D., Rickman, R.D., Dusterhoft, R.G., & Parker, M.A.. Controlling formation fines at their sources to maintain well productivity. United States. doi:10.2118/97659-PA.
Nguyen, P.D., Weaver, J.D., Rickman, R.D., Dusterhoft, R.G., and Parker, M.A.. Tue . "Controlling formation fines at their sources to maintain well productivity". United States. doi:10.2118/97659-PA.
@article{osti_20939520,
title = {Controlling formation fines at their sources to maintain well productivity},
author = {Nguyen, P.D. and Weaver, J.D. and Rickman, R.D. and Dusterhoft, R.G. and Parker, M.A.},
abstractNote = {Migration of formation fines has been shown to cause production decline in many wells. Despite the availability of new downhole tools for use in well stimulation and completion, the ability to sustain desired production levels is often plagued with fines migration problems. The solution to this problem is appropriate treatment to mitigate fines migration at its source. This paper describes the use of an ultra-thin tackifying agent (UTTA) for stabilizing fines in high-rate producing or injection wells. This UTTA is applied as part of an initial prepad in fracturing or gravel-packing operations, as a remedial treatment, or as a post-treatment following acid fracturing or matrix acidizing treatments. The primary purpose of UTTA application is to immobilize formation fines so that they will not detach, migrate with flowing fluids, plug the pore channels, and reduce the flow path permeability. Results of laboratory testing indicate that the UTTA system is applicable to most types of formation fines, including coals, sandstones, and carbonates. Once injected into the formation matrix or proppant pack, the UTTA forms a thin film on formation surfaces, encapsulating the fines. Capillary action helps pull the tackifier into the contact points, fixing the particulate in place without plugging the pore throat. The UTTA does not require a shut-in time after its application. The thin film tackifier does not harden, but remains flexible, enhancing the ability of a formation to withstand stress cycling and allowing the formation to handle high shear stress during high flow rates.},
doi = {10.2118/97659-PA},
journal = {SPE Production and Operations},
number = 2,
volume = 22,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}
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