.... Additionally, the inherent long polymer chains with a broad chain density distribution appear to interact well with C30+ waxy compounds, effectively lowering pour point, reducing wax appearance temperature (WAT) and suppressing wax deposition. A gradual reduction of WATs in polymer treated waxy deposit...

... Abstract A new method has been developed to differentiate and quantify the amount of primary amines through a simple chemical process. Colored cyclic adduct compounds are formed by reaction of selective chemicals with primary amine. This adduct formation is preferential to the primary amine...

... concentrations in flowback samples were 90,000-120,000 mg/L. Moreover, solid precipitates were found in flowback samples associated with pH values of 4.7-5.5. Gypsum was the dominant compound in the samples analyzed while the other compounds such as Lepidocrocite, Magnetite, Quartz, and Barite were detected...

.... Disadvantages of conventional NPG surfactants are their toxicity to the environment and their poor biodegradability. Because cationic alkylamines do not breakdown readily in the environment, they tend to accumulate. Alkylamine quaternary compounds are also toxic to many life forms, so they can have...

... cake gel breaker fracturing fluid residue filtrate USA breaker permeability breakdown pressure range lignosulfonate gel characterization Compound polysuccinimide spe 164116 Introduction Permeability damage caused by formation invasion and filter cake deposition by polymers used...

... Abstract Polymers are being applied increasingly in the field as more environmentally acceptable alternatives to phosphonates for inhibition of common mineral scales. However, the systematic design and optimization of these compounds by traditional experimental methodologies can be complicated...

... temperatures and for different reaction times, and the resultant reaction mixtures were tested as fluids. The best result was obtained from PEI with average molecular weight of 800 and N/B ratio of 4:5. Fluids in which 20-ppt guar was crosslinked with this compound (crosslinker D) exihibit apparent viscosity...

... and hemiacetal and carbazide derivatives which make them easier to handle. Ketones may also be functionalized. These compounds react directly with hydrogen sulfide thus a minimum of a mole of scavenger is required. As the molecular weight of the aldehyde or ketone increases, the weight required to scavenge...

... of the lower viscosity agent. Also suitable viscosifier has been used for better hole-cleaning and suspension of solids. PHPA is another shale inhibition agent which its mechanism of inhibition was described before. The amine compound that was used as the main inhibitor in this study was from poly-ethoxylated...

... are a class of compounds in crude oils, defined in solubility terms that under certain conditions are known to precipitate and deposit. This may lead to very expensive remediation and treatment operations. Over the years much research has been carried out on asphaltenes. Yet the exact chemical nature...

... inhibitors is by using some organic compounds containing oxygen, sulfur and nitrogen. This paper gives a complete vision of what the corrosion inhibitor is. How the structure of corrosion inhibitor molecule can affect the functionality of these molecules. This work discusses the effect of factors like chain...

... unfamiliar QAS compounds, calculated molar equivalents of surfactant near the CEC of the clay and ten percent above that threshold can be used for initial performance trials (see Calculations section below). For further optimization, several different concentrations of QAS can be used to establish...

... hydrocarbon asphaltene oil soluble catalyst composition heavy oil Compound catalyst viscosity reaction Steam Stimulation asphaltene remediation oilfield chemistry scale remediation asphaltene inhibition scale inhibition sagd production chemistry wax inhibition hydrate remediation wax...

... seawater supersaturation fresh water hydrate crystallizer process water clathrate clathrate formation Compound water harvesting petroleum engineer osegovic Upstream Oil & Gas society of petroleum engineers natural ga offshore facility natural gas clathrate desalination desalination...

... (ESI FT-ICR MS) was used to further characterize the two different crudes and their associated asphaltenes. Substantial differences between the relative abundance of heteroatom-containing compound classes were found for the two oils. The relationship between these findings and asphaltene inhibitor...

.... The results allowed implementation of targeted syntheses of new advanced paraffin inhibitors. The physical properties and performance of these new paraffin inhibitors were successfully predicted by the molecular-mechanical modeling. production chemistry polymer compound upstream oil & gas scale...

... or anti-agglomerates inhibitors, are more than timely even today. The new and efficient compounds may retard hydrate formation for longer time than the residence time of the gas within the hydrate-prone section of pipelines and the low dosage inhibitors can also offer significant economic...

... of ferrous sulfides may be reduced significantly using chemicals at mg/L levels. asphaltene remediation ppm oxy2 200 ferrous sulfide solid formation wax remediation oxidation potential ppm oxy 100 compound spe 80260 iron sulfide asphaltene inhibition riser corrosion upstream oil & gas...

... compound chemical treatment ppm rock/fluid interaction carboxylic acid carboxylate mineral acid concentration upstream oil & gas partition spe 80250 molecule subsurface corrosion enhanced recovery removal sga-hem organic pipeline corrosion clarifier polymer water management aha...

... Abstract The paper demonstrates both converging and controversial laboratory results in potential application of silicone compounds (silanes, siloxanes and silicone oils and resins) to be used for restriction of water production in gas wells. The research program was extended to determination...