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Study Findings on Oil and Gas Research Are Outlined in Reports from K.S.M. El-Karsani and Colleagues (Polymer Systems for Water Shutoff and Profile...

August 29, 2014



Study Findings on Oil and Gas Research Are Outlined in Reports from K.S.M. El-Karsani and Colleagues (Polymer Systems for Water Shutoff and Profile Modification: A Review Over the Last Decade)

By a News Reporter-Staff News Editor at Energy Weekly News -- A new study on Oil and Gas Research is now available. According to news reporting from Dhahran, Saudi Arabia, by VerticalNews journalists, research stated, "Unwanted water production is a serious issue in oil-and gas-producing wells. It causes corrosion, scale, and loss of productivity."

The news correspondents obtained a quote from the research, "One method of treating this problem is to chemically reduce unwanted water. This paper discusses the use of polymer systems for this purpose and presents a thorough review of available literature over the last decade. In this paper, field-application data for various polymer systems are summarized over the range of 40 to 150 degrees C (104 to 302 degrees F). These applications cover a wide range of permeabilities from 20 to 2,720 md in sandstone and carbonate reservoirs around the globe. Moreover, the review revealed that the last decade of developments can be categorized into two major types. The first type is polymer gels for total water shutoff in the near-wellbore region, in which a polymer is crosslinked with either an organic or an inorganic crosslinker. The second type is concerned with deep treatment of water-injection wells diverting fluids away from high-permeability zones (thief zones). These thief zones take most of the injected water, which results in a large amount of unrecovered oil. For the total-blocking gels, various systems were identified, such as polyurethane resins, chromium (Cr3+) crosslinking terpolymers, Cr3+ crosslinking foamed partially hydrolyzed polyacrylamide (PHPA), and nanoparticle polyelectrolyte complexes (PECs) sequestering Cr3+ for elongation of its gelation time with PHPA. In addition, polyethylenimine (PEI) was identified to crosslink various polyacrylamide-(PAM-) based polymers. The Petroleos de Venezuela S. A. (PDVSA) Research and Development Center developed a PAM-based thermally stable polymer and an organic crosslinker. The system is applicable for a wide temperature range from 50 to 160 degrees C (130 to 320 degrees F). For the deep modification of water-injection profiles in water-injection wells, two systems were identified: microspheres prepared from PAM monomers crosslinked with N, N'-methylene-bisacrylamide and microspheres produced by crosslinking 2-acrylamido-2-methylpropane sulfonic acid (AMPS) with diacrylamides and methacrylamides of diamines (thermally activated microparticles known as Bright Water)."

According to the news reporters, the research concluded: "This paper highlights all major developments in these areas."

For more information on this research see: Polymer Systems for Water Shutoff and Profile Modification: A Review Over the Last Decade. SPE Journal, 2014;19(1):135-149. SPE Journal can be contacted at: Soc Petroleum Eng, 222 Palisades Creek Dr, Richardson, TX 75080, USA.

Our news journalists report that additional information may be obtained by contacting K.S.M. El-Karsani, Saudi Aramco, EXPEC Adv Res Center, Dhahran, Saudi Arabia. Additional authors for this research include G.A. Al-Muntasheri and I.A. Hussein.

Keywords for this news article include: Asia, Dhahran, Saudi Arabia, Oil and Gas Research

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Energy Weekly News


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