.... 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...

... 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...

... 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...

... hydraulic fracturing hydrophobe carbon atom proppant concentration tolerance surfactant fracturing fluid composition 1 functionality gel molecule sugar shear rate Compound sugar molecule KCl viscoelastic solution reaction sucrose solubility Introduction Non-polymeric gellants...

... fluid viscosity polymer concentration filter cake gel breaker characterization residue Compound filtrate USA breaker permeability lignosulfonate 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...

... acids were tested as model compounds in a series of guar solutions against boric acid. The results demonstrated that such chemistry could effectively reduce C* (critical overlap concentration for polymer chains), C** (critical entangle concentration for polymer chains) and Ccc (critical crosslinking...

... 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...

.... Besides shale inhibition, an important challenge when using amine compounds in HPWBM is to overcome the thermal instability. Such a system must be formulated to achieve the right concentration of each mud additive to satisfy the necessity of a system that provides proper thermal stability during...

... Abstract One of the most important issues in oilfield chemistry is the troublesome occurrence of organic and inorganic solids which may form downhole in the reservoir, wellbore, topsides and/or in pipelines. Asphaltenes are a class of compounds in crude oils, defined in solubility terms...

... corrosion inhibitor for a given environment is essential. There are enormous examples of chemical inhibitors, which are propriety mixtures of several chemicals to induce synergistic effect. But basic function of corrosion inhibitors is by using some organic compounds containing oxygen, sulfur and nitrogen...

... (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...

... 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...

..., product water from petroleum and gas production is usually fouled by dissolved hydrocarbons and other substances, particularly H 2 S. These contaminants must be removed from the peterolum stream to protect catalysts, but many of these compounds are poisonous and must be carefully handled. The lighter...

... of heavy oil production in puff-and-huff operation was improved by aquathermolytic technology. complex reservoir bitumen oil sand Upstream Oil & Gas molybdenum oleate oil sample catalyst enhanced recovery heavy crude oil composition heavy oil Compound asphaltene inhibition heavy oil...

.... 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 paraffin remediation upstream...

... 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...

... 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...

... to illustrate its effectiveness in the field. riser corrosion anionic polymer materials and corrosion brine desolubilizer emulsion well integrity oilfield chemistry fluid compatibility phosphorous acid production chemistry produced water discharge particle flowline corrosion compound...

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