Oilfield application for biocides

McIlwaine, Douglas B.

doi:10.1007/1-4020-2818-0_10

Cited by 7 publications

(9 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The observation of viable bacteria in flowback water samples from both study sites (Table ) indicates that the biocide treatments did not completely kill all the bacteria that were present in the frac fluids at either study site. The THPS biocide that was used to control bacterial growth in fracturing fluids at the SM site cleaves the disulfide bond of cystine residues in bacterial cell walls, which ultimately leads to cell death (McIlwaine, ). The biocide that was used to treat fracturing fluids from the CT site consisted of a mixture of glutaraldehyde and two quaternary ammonium compounds (ADBAC and ADEAC).…”

Section: Discussionmentioning

confidence: 99%

“…Glutaraldehyde reacts with amino groups in the bacterial cell wall and prevents the transport of essential nutrients, which leads to the death of bacterial cells (Gorman et al ., ; Russell, ). The presence of quaternary ammonium compounds makes it easier for glutaraldehyde to penetrate the bacterial cell wall, which results in enhanced biocidal activity (McIlwaine, ). The synergistic effects observed when glutaraldehyde is mixed with quaternary ammonium compounds may explain why lower numbers of viable bacteria were detected in flowback water at the CT site, compared with flowback water from the SM site (Table ).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Bacterial communities associated with hydraulic fracturing fluids in thermogenic natural gas wells in North Central Texas, USA

Struchtemeyer

Elshahed

2011

FEMS Microbiol Ecol

111

120

View full text Add to dashboard Cite

Hydraulic fracturing is used to increase the permeability of shale gas formations and involves pumping large volumes of fluids into these formations. A portion of the frac fluid remains in the formation after the fracturing process is complete, which could potentially contribute to deleterious microbially induced processes in natural gas wells. Here, we report on the geochemical and microbiological properties of frac and flowback waters from two newly drilled natural gas wells in the Barnett Shale in North Central Texas. Most probable number studies showed that biocide treatments did not kill all the bacteria in the fracturing fluids. Pyrosequencing-based 16S rRNA diversity analyses indicated that the microbial communities in the flowback waters were less diverse and completely distinct from the communities in frac waters. These differences in frac and flowback water communities appeared to reflect changes in the geochemistry of fracturing fluids that occurred during the frac process. The flowback communities also appeared well adapted to survive biocide treatments and the anoxic conditions and high temperatures encountered in the Barnett Shale.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Bacterial communities associated with hydraulic fracturing fluids in thermogenic natural gas wells in North Central Texas, USA

Struchtemeyer

Elshahed

2011

FEMS Microbiol Ecol

111

120

View full text Add to dashboard Cite

show abstract

“…Dobór odpowiedniego biocydu jest zagadnieniem podstawowym, ale niejednokrotnie stanowi poważne wyzwanie. Biocyd musi bowiem spełniać kilka podstawowych warunków (McIlwaine, 2005): • Profil aktywności. Powinien być ściśle dopasowany do rodzaju występujących mikroorganizmów.…”

Section: Wstępunclassified

Testy biocydów i neutralizatorów H2S jako dodatków do płuczek wiertniczych i płynów szczelinujących

Kapusta¹,

Turkiewicz²,

Brzeszcz³

2021

View full text Add to dashboard Cite

The article presents the results of studies on substances with a biocidal effect in terms of their possible use as additives to drilling muds and fracturing fluids. The aim of the work was to identify the most effective biocides by examining their action on aerobic and anaerobic bacteria, fungi, sulfate-reducing bacteria (SRB), and a consortium of microorganisms. Various chemicals have been considered, due to a constant and overriding goal to find the one with the highest activity, and above all, the ones that have not yet been tested. Particular attention was paid to substances that, apart from known biocidal properties, have also the ability to neutralize hydrogen sulfide, and to reduced sulfur compounds (H2S scavengers), and the so-called “green biocides”, i.e. those that are considered safe for the environment. Most of the tested biocidal agents were effective against aerobic and anaerobic bacteria, while 10 out of 12 showed good or very good activity against SRB (low MIC and MBC values), including 3 out of 4 H2S scavengers. On the other hand, only some biocidal agents proved to be effective against fungi and microbial consortium; among them were agents containing quaternary ammonium compounds (Bardac LF and Barquat CB-80), triazine derivatives (Biostat and Petrosweet HSW 82165) and DBNPA (Biopol C-103L). Bardac LF and Barquat CB-80, together with the mixture of Grotan OX and Preventol GDA 50, upon introduction to the drilling mud and fracturing fluid, were superior over other biocidal agents (Biostat, Petrosweet HSW 82165 and Biopol C-103L), showing the full activity at 800 ppm. Environmentally friendly biocide Aquacar THPS 75 appeared to be the least effective.

show abstract

“…Protection of human health by biocides also includes examples such as chlorination of drinking and swimming pool water as well as efficient disinfection of air humidifiers and air conditioning equipment (Ludensky 2005; Unhoch and Vore 2005). Biocides are also added to shampoos, cosmetics, creams, paints, polymer emulsions, foodstuffs, beverages, fuel, and oil (Gillat 2005; Lindner 2005; McIlvaine 2005; Raczek 2005; Robbins and Levy 2005; Scholtyssek 2005) as well as being used in the preservation of wood, leather, plastics, coating film, and textiles (Dylingowski 2005; Hauber 2005; Lindner 2005; Williams 2005; Wypkema 2005). Moreover, biocides are used for prevention of biofilms in products, such as pipelines; in processes, such as cooling; and in recreational waters (Ludensky 2005; Unhoch and Vore 2005), process waters, and metal‐working coolants (Siegert 2005).…”

Section: The Nontoxic Poison Dilemmamentioning

confidence: 99%

“…The removal of sulfate by reverse‐osmosis membranes from injection water aims at hindering the action of sulfate‐reducing bacteria. Similarly, ultraviolet treatment of injection water functions in the absence of biocides (McIlvaine 2005). It is, therefore, evident, that if biocide development does not push forth with new alternatives, alternative means for controlling biodeterioration will be developed.…”

Section: The Need For New Biocide Formulationmentioning

confidence: 99%

Toward a nontoxic poison: Current trends in (European union) biocides regulation

Kähkönen

Nordström

2008

Integr Envir Assess & Manag

View full text Add to dashboard Cite

The number of products containing biocides is increasing at the same time as the number of available biocides is decreasing. Biocides are biologically active chemicals with a vast area of applications where demands for maintaining product quality by use of biocides presents a major challenge for developers striving to meet emerging environmental concerns and fulfilling criteria for eco-labeled consumer products. Tightening regulations have, however, led to stagnation in the current development of new biocide chemistries, and the "nontoxic poison" has yet to be formulated. Accordingly, the present article presents a critical overview of European Union regulation of biocides and their usage and of some of the future challenges for meeting demands for environmentally safe products and processes in which biocides are used. The Biocidal Product Directive, which is presently implemented, is one focus in the present article. Regulations of environmental, health, and safety (EHS) risk classifications and their role in the future development of biocide-containing products are also discussed. Studying the biocide dilemma may provide tools for the chemical industry as whole for proactive anticipation of the effect of emerging regulatory demands on product development.

show abstract

Oilfield application for biocides

Cited by 7 publications

References 39 publications

Bacterial communities associated with hydraulic fracturing fluids in thermogenic natural gas wells in North Central Texas, USA

Bacterial communities associated with hydraulic fracturing fluids in thermogenic natural gas wells in North Central Texas, USA

Testy biocydów i neutralizatorów H2S jako dodatków do płuczek wiertniczych i płynów szczelinujących

Toward a nontoxic poison: Current trends in (European union) biocides regulation

Contact Info

Product

Resources

About