... precipitation of sulfates, electrodialysis, or any other means. Sulfate removal techniques were investigated, but currently they are not deemed practical for stimulation vessel use due to the extra equipment requirements and associated processing times. asphaltene inhibition geologist asphaltene...

... which in combination with decreasing temperatures seriously increases the risk of precipitation of barium sulfate. This eventually resulted in a complete blockage of the well. For the second well, barium scale samples were tested in the laboratory to select the best dissolvent. This dissolvent had been...

... throughout the system. In addition to this analysis, a large volume of data that had been stored in various databases was also transferred to Power BI to improve data visualisation and allow faster detection of solids precipitation, easier root cause analysis and ultimately more effective scale management...

... of issues related to mineral scale deposition can be encountered that impact the efficiency of CO 2 injection and utilisation/storage. These can include calcium carbonate deposition during CO 2 capture in a calcium looping process, halite (NaCl) precipitation during supercritical dry CO 2 injection...

... by adsorption and precipitation mechanisms, which will depend on temperature, pH, and divalent ions concentration such as Ca and Mg. Recent experiments concluded that adsorption is more dominant than precipitation at low concentrations. Traditionally, adsorption/precipitation experiments have been performed...

... under shut-in conditions. The water in this brine will evaporate, causing precipitation of salts. A numerical model is used to evaluate the risk of loss of injectivity in a North Sea candidate Carbon, Capture and Storage (CCS) aquifer. The objectives of the study presented in this paper are to use...

... the produced brine is extracted, the cooled brine is reinjected in the reservoir. Due to the dramatic changes in pressure and temperature occurring in water dominated reservoirs, binary and flash cycle geothermal systems results in the precipitation of scale minerals. Scaling may occur at different locations...

... to be highly reactive, where the SI retention is driven by both adsorption and precipitation of SI and SI-Ca/Mg complexes. To design and carry out this type of squeeze treatment, a comprehensive model capable of simulating SI retention in carbonate formations is required. In this study, a model has been...

..., dilution volume and saturation index have been calculated using BCC ScaleSoftPitzer software. The induction time (t ind ) and mass of precipitated salts are considered for data analyses. Various experimentations to simulate the water dilution at ∆T were conducted and data suggest that in some cases 5...

... development reservoir surveillance oilfield chemistry hydraulic fracturing upstream oil & gas precipitation co 2 spe international oilfield scale conference enhanced recovery symposium aberdeen reaction hydrate remediation hydrate inhibition sustainability remediation of hydrates calcium...

... of a well 2 months before the fouling incident, or (ii) dissolution of previously deposited calcium carbonate scale (and/or conceivably, traces of this mineral in the formation) by the acid phosphonate inhibitor (most likely the well squeezed just before the incident), followed by re-precipitation of the Ca...

... of the BSA did not indicate any significant amounts of CaSO 4 scale on the filters indicating stable produced water. Scale and 1D reservoir simulations also showed that to match the produced water composition with the correct FW:SW ratio, CaSO 4 should have precipitated in the reservoir...

... in the injected and formation brines. The goal of this manuscript was to investigate the effect of calcium concentration and calcium/magnesium ratio in precipitation of the SI-divalent cation complex using a microfluidic chip. The microfluidic setup consists of a glass chip, where a solution containing CaCl2...

... intervention coil hose intervention calcium carbonate scale management concentration dhsv simulation wax remediation wax inhibition asphaltene remediation remediation of hydrates precipitation intervention acid reduction operation injection application reservoir pressure drop gaslift valve...

... and Thermally Activated Polymer (TAP), for in-depth conformance control, on oil recovery and BaSO 4 scale deposition. A reactive transport reservoir simulator was used to evaluate the impact of three EOR techniques in the mixing profiles of injected seawater and formation brine, resulting in the precipitation...

... solution, less deposit was collected in the test apparatus itself. The precipitate in the effluent samples (which had passed through the apparatus) was found to have a mean particle size in the region of 10 microns, with a significant proportion of the distribution of particles below 1 micron...

... 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...

... surveillance drilling fluid property fluid loss control calcite precipitation equilibrium upstream oil & gas precipitation formation water sample drilling fluid formulation drawdown concentration production monitoring production chemistry complex reservoir high pressure high temperature...

... of these wells to avoid scaling are presented. water management oilfield chemistry paraffin remediation hydrate remediation wax remediation wax inhibition scale inhibition precipitation scale inhibitor asphaltene remediation hydrate inhibition remediation of hydrates calculation asphaltene...

... drop below a certain threshold. Such a trigger value could be estimated from the BaSO 4 precipitation tendency. Relaxation of requirements for the Sulphate Reduction Plant (SRP) can significantly reduce operational costs. This study investigates the impact of several parameters on the timing...