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Keywords: precipitation
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Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 25–26, 2022
Paper Number: SPE-209510-MS
... 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...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 25–26, 2022
Paper Number: SPE-209492-MS
... monitoring scale remediation wax inhibition upstream oil & gas precipitation co 2 reaction international symposium remediation of hydrates calcium carbonate international conference heath social responsibility scale inhibition asphaltene inhibition scale control scale inhibitor inhibitor...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 25–26, 2022
Paper Number: SPE-209517-MS
... 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...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 25–26, 2022
Paper Number: SPE-209507-MS
... 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...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 25–26, 2022
Paper Number: SPE-209509-MS
..., 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...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, May 25–26, 2022
Paper Number: SPE-209501-MS
... remediation of hydrates scale remediation production chemistry upstream oil & gas dhsv simulation operation injection precipitation intervention application reservoir concentration pressure drop gaslift valve downhole pressure hose intervention calcium carbonate scale management acid...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200712-MS
... years we have used RTM to make scale predictions for several waterflooding projects around the globe. In this paper we will show results from these field cases and highlight the most important findings. In brief, these are: Enabling mineral precipitation reactions in flow calculations improves...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200714-MS
... concentration pipe scale formation production chemistry upstream oil & gas deposition pressure drop pressure distribution valve orifice particle size distribution scale inhibition precipitation flow rate experiment orifice reynolds number valve Introduction In the oil industry...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200705-MS
... hydrate inhibition asphaltene inhibition deposition inhibitor concentration ppm ppca concentration minimum inhibitor concentration bottle test scale deposition concentration tube-blocking test kaolinite differential pressure precipitation inhibitor barium sulfate ba 2 Introduction...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200690-MS
... the impact of the in situ chemical and geochemical interactions on the scale precipitation risk when the fluids reach the wellbore, and their inhibition during Alkaline-Surfactant (AS) and ASP flooding processes. Reservoir simulation is used to model the geochemical interactions and chemical flood flow...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200679-MS
... of these wells to avoid scaling are presented. water management oilfield chemistry paraffin remediation scale inhibition wax remediation wax inhibition asphaltene remediation scale remediation production chemistry upstream oil & gas concentration precipitation scale inhibitor remediation...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200664-MS
... 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...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200657-MS
... Abstract Monoethylene glycol (MEG) regeneration systems often have a pre-treatment unit for controlled precipitation and subsequent removal of carbonates and hydroxides. The purpose is to avoid scaling in downstream process system. CaCO 3 is often the main solid removed in the pre-treatment...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200666-MS
... 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...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200667-MS
... 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...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200707-MS
... surveillance drilling fluid property upstream oil & gas fluid loss control calcite precipitation precipitation equilibrium formation water sample drilling fluid formulation drawdown concentration production monitoring production chemistry complex reservoir high pressure high temperature...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200695-MS
... 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...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190715-MS
... overflush stage enhancer return profile spe international symposium Symposium fracture precipitation Introduction Scale formation within the oilfield continues to be a significant challenge to the energy sector. Typically scale formation issues are caused by deposition of insoluble salt from...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190746-MS
... of the asset. Based on these risks, appropriate scale mitigation and monitoring measures have been selected. drilling fluid selection and formulation wax inhibition wax remediation drilling fluid property Hydrate Remediation scale inhibition hydrate inhibition precipitation model 2 drilling...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 20–21, 2018
Paper Number: SPE-190735-MS
... significantly impaired by Fe(II). It is proposed that the formation of insoluble precipitates between Fe(II) and phosphonate is very likely the reason behind the observed significant impairment. Further, two methods to reverse the detrimental effect of Fe(II) on barite scale inhibitor performance...

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