... of the carbonate dissolver and the sulfate dissolver in removing, respectively, calcium carbonate and barium sulfate was evaluated. The results showed that neither dissolver product caused formation damage to the sandstone core under the conditions tested. The dissolution capacity tests suggested...

...) and display good efficiency against calcium carbonate and silica/silicate scales. Geothermal brines contain dissolved CO 2 and H 2 S and this can make fluids corrosive so the interaction between scale and corrosion inhibitors will also need to be considered as part of any scale or corrosion management...

... with calcium carbonate, barium sulfate, calcium sulfate and organic compounds suggest that the technology of magnetic treatment of fluids can be applicable in the prevention of scale and/or organic deposits in oil producing fields. Colic and Morse (1999) suggested that the effects caused...

... and are becoming more common over the last few years especially for calcium carbonate control. Scale management is clearly still a very important factor for the good health of existing oil and gas wells and the trend towards net zero will only increase this reliance as the need for maximum production from...

... were found of calcium carbonate, the scale mineral against which the squeeze treatment had been performed. The paper presents a review of the timeline of events that led up to the incident and describes key observations that point to its cause, including the treatment design, well-performance...

... deepwater wells where workover jobs are very expensive. This strategy is being considered as a good option for downhole applications where portions of the wellbore are not assisted by chemical injection or even as a redundancy which can attenuate effects of chemical injection failure. The calcium carbonate...

... inhibition asphaltene inhibition inhibitor vaterite abundance caco 3 polymorphic abundance fraction calcium carbonate scale formation calcium carbonate aragonite mass gain multiphase system transformation emulsion polymorph calcite dissolution Introduction In the petroleum industry...

... Abstract Calcium carbonate scale formation is one of the most critical challenges of the oil and gas industry in Brazil. The high content of CO 2 , the formation brine and the types of rock reservoir observed in the Brazilian Pre-salt favor the occurrence of inorganic scaling throughout...

... in the mixing point at the wellhead and in the production pipeline. Scale calculations gives calcium carbonate saturation ratios at a level where scale formation is expected in produced water systems which indicate a need for scale inhibitor. It is assumed that precipitation of salts in MEG systems is slower...

... rate experiment orifice reynolds number deposition pressure drop pressure distribution valve orifice particle size distribution remediation of hydrates calcium carbonate saturation index procedure sleeve valve pipe scale formation valve Introduction In the oil industry...

... scale loop tests to assess scale inhibition efficiency, a wide variety of scale inhibitor chemistries containing different functional groups were screened. The aim was to identify an inhibitor which would give the best performance against calcium carbonate scale in the presence of up to 100ppm Fe 2...

... are calcium carbonate, calcium sulfate, and barium sulfate. Scales can occur in both production and injection wells, if water is present. Water-formed scale deposits are among the most troublesome for deterioration of the ESP; therefore, the understanding of scaling and fouling allowed the operator together...

... for downhole chemical treatments. enhanced recovery Modeling & Simulation hydrate inhibition scale remediation asphaltene inhibition wax inhibition scale control asphaltene remediation remediation of hydrates scale management Brine sulphate calcium carbonate coating seawater squeeze...

...+ and SO 4 2− ions were studied as function of supersaturation with respect to calcite. The experimental results show that crystallization fouling, rather than particulate fouling, is the dominating mechanism controlling the formation of calcium carbonate scale in MEG pre-treatment. The supersaturation...

... The treatment approach chosen was to select a more cost effective chemistry to inhibit the calcium carbonate and calcium sulfate scale causing failures in the area, while maintaining performance in the presence of iron sulfide solids and having a tolerance for dissolved iron in produced fluids...

... Continuous injection of low-salinity water ( Lu 2014 ). Periodic water washes to remove deposits. These may include acid treatments to remove associated acid-soluble scales, such as calcium carbonate ( Wat 2010 ). Continuous injection of halite inhibitors ( Frigo 2000 ). Limiting...

... passed through the process ( Ferraz, 2008 ). Precipitation of calcium carbonate, which is a common scale, can occur as a result of increased temperature and / or pressure decrease ( Rosa, 2007 ). The most convenient and economical method to prevent scale problems is the use of scale inhibitors which...

... remediation remediation of hydrates supply vessel scale inhibition dissolver Well Productivity Hydrate Remediation hydrate inhibition asphaltene inhibition intervention FPSO Upstream Oil & Gas calcium carbonate formation damage operation Symposium dissolver treatment application seawater...

... Here, β 0 is the aggregation rate, G the growth rate and f is a proportionality factor that depends on geometrical factors and hydrodynamics. Aggregation of calcium carbonate is thus directly proportional to the growth rate and therefor also the supersaturation. In a similar manner...

... strategy for HP/HT fields. paraffin remediation wax remediation wax inhibition asphaltene remediation oilfield chemistry scale inhibition Hydrate Remediation hydrate inhibition scale remediation Production Chemistry organic acid calcium carbonate application barite dissolution...