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MacKenzie C.,LUX Assure | Rowley-Williams C.,LUX Assure | Achour M.,ConocoPhillips | Blumer D.,ConocoPhillips | And 2 more authors.
SPE Journal | Year: 2012

This paper discusses the principle and proof of concept of a novel corrosion-management tool based on maintaining optimum corrosion- inhibitor dose in an inhibited environment. Film-forming corrosion inhibitors typically contain active ionic surfactant molecules, which adsorb on surfaces and form a protective barrier against corrosion. Upon saturation of surfaces by the inhibitor, the molecules are found in the aqueous phase as micelles or in the oil phase as reverse micelles. The proposed technique is based on the hypothesis that the presence of these micelles in the water phase could be used to indicate the total surface coverage and, therefore, the optimum dose. The technique has been applied in the laboratory simulating an actual inhibited multiphase production system. Fluorescent markers, which are extremely sensitive to micelle presence, have been developed and used during the laboratory testing. Results were compared with those from standard laboratory techniques, including interfacial tension (IFT) and particle-size analyses (diffraction), in order to determine the efficacy for micelle detection. Corrosion bubble tests were also used to determine any link to inhibitor efficiency. IFT results showed complex events occurring with increasing inhibitor concentration. The IFT vs. inhibitor concentration curve was nonclassical, probably because of the multicomponent nature of inhibitor formulations, but suggested micelle formation at approximately 150 ppm. Fluorescence analysis suggested that micelles formed starting at a 150-ppm dose. Particle-size analysis was consistent with micelle presence beyond this concentration. Separate experiments comparing fluorescence with corrosion rates demonstrated an apparent nonlinear variance with inhibitor concentration, supporting the hypothesis. The analytical comparisons supported the underlying principles of this micelle-detection technology. Development of a portable device is under way and will provide an important new tool for proactive corrosion management in the oil field as well as a useful laboratory qualification method. copyright © 2012 Society of Petroleum Engineers.


Mackenzie C.,LUX Assure | Singh P.,ConocoPhillips | Achour M.,ConocoPhillips | Lane C.,ConocoPhillips | Blumer D.,ConocoPhillips
NACE - International Corrosion Conference Series | Year: 2014

Surfactant-based corrosion inhibitors are widely used in oilfield production systems. Ensuring that an appropriate dosage of inhibitor is present throughout a variable production network is very challenging and can present a serious risk in asset integrity.Using micelle detection for diagnosis of the presence of an adequate inhibitor dose has been demonstrated as a method which avoids some of the difficulties and potential inaccuracies of residual measurement whilst still providing a rapid measurement of functional dose content. In this study it was applied to the analysis of spot samples taken across a large onshore production system encompassing three different corrosion inhibitors in two nearby fields and a water injection system serving both.The results were quite different across the three systems. The larger onshore system was found to contain micelles in very few samples and showed that more performance could be sought by increasing dosage, the smaller production system contained micelles throughout indicating the possibility of decreasing dosage if required and the water injection system showed a depletion of micelles across the length of the system with some sub-optimal dosage towards the terminus. ©2014 by NACE International.


Mackenzie C.,LUX Assure | Rowley-Williams C.,LUX Assure | Mackay F.S.,LUX Assure | Lane C.,ConocoPhillips | And 2 more authors.
NACE - International Corrosion Conference Series | Year: 2013

Following our preceding papers on the theoretical underpinnings and laboratory development of the micelle detection method, this paper will describe a variety of case studies where it has been applied to systems to investigate the field-relevant functional dose of corrosion inhibitor. The relationship between the critical micelle concentration (CMC) of surfactant-based corrosion inhibitors and inhibitory efficacy has been recognized since the early 1980's. By coupling these academic findings with recent advances in analytical hardware and chemical markers which provide the ability to detect micelles rapidly within oilfield brines, useful information can be accessed in field conditions related to the physical action of the inhibitor rather than a chemical residual. The absence of micelles can be used to diagnose an under-dosed system in situ or the enumeration of present micelles can be used to fine-tune the inhibitor concentration for balancing inhibitor activity and oil-water separation. Case studies will be presented which demonstrate the use of the technology for 1) simulating field fluids (both production and water injection) over an inhibitor concentration range as an initial estimate for field dosage, in combination with other screening tools, 2) exploring the effect of different crude oils on inhibitor micelles, 3) the effect of solids within a fluid system on the availability of injected inhibitor, 4) field analysis of a MEG reclamation system to monitor rapid accumulation of surfactant CI components, 5) measurement of production brines in different fields for the presence of corrosion inhibitor micelles. The most prominent finding across these studies was the significant impact that changes in field conditions can have on available inhibitor and how such changes are often unpredictable or very difficult to simulate in lab conditions. The need for timely field data was emphasized from the results of field analysis. © 2013 by NACE International.


Mackenzie C.,LUX Assure | Perfect E.,LUX Assure
Corrosion Management | Year: 2012

This paper builds on the evidence for the optimum dose of organic film-forming corrosion inhibitor (FCCI) being at the critical micelle concentration (CMC) of the surfactant components, and the concept of micelle detection as a tool for understanding the effectiveness of the inhibitor dose in the field. It extends the underlying principles from laboratory testing, to the rapid analysis of field fluids and explores the different results available from alternative instrumentation.


Grant
Agency: GTR | Branch: Innovate UK | Program: | Phase: Feasibility Study | Award Amount: 73.28K | Year: 2012

Awaiting Public Project Summary


Trademark
LUX Assure | Date: 2014-10-17

Chemicals for use in testing kits to analyze the concentration of hydrate inhibitors; diagnostic preparations; diagnostic reagents in kit form; reagents in kit form; analytical preparations; analytical preparations in kit form; chemical test reagents; test kits consisting of reagents used for determining the concentration of hydrate inhibitors in water, crude oil and condensate. Scientific, measuring, analytical and detecting apparatus and instruments; laser diffraction apparatus; interferometry and imaging apparatus; hyperspectral imaging apparatus; flow cytometry apparatus; electronic analysis apparatus; laboratory apparatus; data processing equipment; parts and fittings for all the aforesaid good. Industrial analysis and research services; flow assurance; scientific, analytical and diagnostic services, for others; chemical analysis; laboratory services; laboratory services relating to the production of industrial and diagnostic analysis and test kits; consultancy services relating to chemical research; technical support services; analytical and diagnostic services; hire, leasing or rental of apparatus or instruments, installations or components for use in the provision of the aforementioned services; hire, leasing or rental of laboratory apparatus or instrument.


Trademark
LUX Assure | Date: 2014-10-24

Scientific, measuring, analytical and detecting apparatus and instruments, namely, light measuring equipment, namely, flurometers, spectrophotometers and flow cytometers; laser diffraction apparatus, namely, a laser diffraction particle size analyzer; interferometry and imaging apparatus, namely, interferometer and optical microscopes, CCD cameras, CMOS cameras, photographic film, fibre optic devices and single photon detector; hyperspectral imaging apparatus, namely, sensors for chemical and spectral analysis; Flow cytometers and flow-based analyzers providing cell and particle analysis, detection, or counting for scientific, laboratory, and general research uses OR laboratory instrument, namely, flow cytometer; laboratory apparatus, namely, centrifuges, incubators, heat blocks, ovens, rotators, pipettes, mixers, and filtration systems; data processing equipment, namely, computers; Laboratory apparatus being chemical injection pumps; biological monitoring apparatus, namely, viability screeners and ATP testing apparatus; corrosion monitoring apparatus, namely, electrical impendence spectroscopes, rotating cylinder electrodes, rotating cylinder autoclaves, ecoclaves, jet impingement equipment, corrosion rate coupons, linear polarization resistance probes, electrical resistance probes, acoustic sensors and automated pipeline inspection device, namely, intelligent pigs; parts and fittings for all the aforesaid goods. Industrial analysis and research services in the field of the oil and gas industry; scientific, research, industrial and analytical research and diagnostic services in the field of the oil and gas industry; chemical analysis; scientific laboratory services; consultancy services relating to chemical research; technical support services, namely, trouble-shooting, maintenance, and optimization of industrial processes; analytical and diagnostic services in the field of the oil and gas industry via a computer; preparation and analysis of scientific reports, namely, providing information on the subject of scientific research in the oil and gas industry; Technical consulting services and preparation and analysis of technical reports in the field of trouble-shooting, maintenance, optimization of industrial processes in the oil and gas industry; monitoring of corrosion of oil and water production and transportation systems including upstream, midstream and downstream assets; biological monitoring, namely, microbial monitoring in oil and water production and transportation systems including upstream, midstream and downstream assets; process optimization, namely, providing information on fluid content enabling optimization of production in the oil and gas industry; fluid content analysis; asset integrity, namely, testing of hardware for the oil and gas industry; corrosion management, namely, measuring and monitoring components and fluids in the oil and gas industry to prevent corrosive attack.


Trademark
LUX Assure | Date: 2015-01-23

Chemicals used in industry and science; Chemicals, namely, oxidizing agents and detection reagents producing optical signals for use in testing kits to analyze the concentration of hydrate inhibitors; diagnostic preparations for scientific use; diagnostic kits consisting primarily of diagnostic reagents for scientific use; diagnostic reagents for scientific use; analytical preparations, namely, chemicals, namely, buffer and standard solutions used in analytical chemistry; analytical preparations in kit form comprised of chemicals, namely, detection chemicals, buffer and standard solutions used in analytical chemistry; chemical test reagents, namely, diagnostic reagents for scientific use; test kits consisting of reagents used for determining the concentration of hydrate inhibitors in water, crude oil and condensate; reagents for use in fluorescent based analysis; biomolecular reagent. Scientific, measuring, analytical and detecting apparatus and instruments, namely, optical detectors, namely, fluorescence detectors, luminescence detectors, Raman detectors, optical microscopes, CCD cameras, photographic film, fibre-optic devices, photometric detectors, MEMS devices, single photon detectors, spectrophotometers, chromatography systems, inferometers, scanning spectrometers, hyperspectral images and flow cytometers; laser diffraction apparatus, namely, a laser diffraction particle size analyzer; interferometry and imaging apparatus, namely, interferometers, optical microscopes, CCD cameras, CMOS cameras, photographic film, fibre optic devices and single photon detectors; hyperspectral imaging apparatus, namely, sensors for chemical and spectral analysis; flow cytometry apparatus, namely, analyzers and sorters; laboratory apparatus, namely, centrifuges, incubators, heat blocks, ovens, rotators, pipettes, and mixers; process control apparatus; field apparatus; Laboratory apparatus being chemical injection pumps; telemetry apparatus; biological monitoring apparatus; corrosion monitoring apparatus; data processing equipment, namely, computers; parts and fittings for all the aforesaid goods. Retail services in the field of chemicals used in industry and science, chemicals for use in testing kits to analyze the concentration of hydrate inhibitors, diagnostic preparations, diagnostic reagents in kit form, reagents in kit form, analytical preparations, analytical preparations in kit form, chemical test reagents, test kits consisting of reagents used for determining the concentration of hydrate inhibitors in water, crude oil and condensate, reagents for use in fluorescent based analysis, biomolecular reagents, scientific, measuring, analytical and detecting apparatus and instruments, laser diffraction apparatus, interferometry and imaging apparatus, hyperspectral imaging apparatus, flow cytometry apparatus, electronic analysis apparatus, laboratory apparatus, data processing equipment. Industrial analysis and research services in the field of flow assurance; scientific research, industrial analytical research and diagnostic services in the field of the oil and gas industry for others; chemical analysis and testing; scientific laboratory services; laboratory services relating to the production of industrial and diagnostic analysis and test kits; consultancy services relating to chemical research; technical support services, namely, troubleshooting of industrial process control problems in the field of oil and gas; analytical and diagnostic services in the field of industrial testing; preparation and analysis of scientific reports; provision of expert reporting services; flow assurance; corrosion monitoring; biological monitoring; process optimization; process analysis; asset integrity; corrosion management.


Patent
LUX Assure | Date: 2016-04-21

A method of monitoring water-soluble treatment chemicals in a fluid that is immiscible with water and which may or may not contain some aqueous fluid, the method using at least one reagent that produces an optically detectable product, the detection step can take place without separation of the aqueous phase containing the treatment chemicals from the fluid immiscible with water.


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