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Keywords: scale inhibitor
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Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200710-MS
... and not simply delayed. A product and dose rate is considered effective if the increase in differential pressure during the test period is less than 1 psi from the baseline (obtained during the blank run). To evaluate the scale inhibitor with its MIC, scale inhibitor is injected with the brines...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200655-MS
...) deposition to also occur in these environments as well. The elevated iron content present in these brines not only introduces the potential for deposition of iron-related scales but is also known to have a negative impact on scale inhibitor performance against calcium carbonate and barium sulfate scales...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200669-MS
... to variable production parameters, especially Hexs temperatures. Scale inhibitor efficacy is strongly influenced by overall scaling conditions including water chemistry, temperature, pressure, and presence of incompatible chemicals. In this study, scale precipitates collected from Hexs were characterized...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200686-MS
... conductivity lwp 16 20 chemical carrier 1 base proppant machine learning oilfield chemistry fracturing fluid chemical carrier scale inhibitor application society of petroleum engineers The second proppant blend design assessment was completed by the pumping service company. This involved...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200706-MS
... sulfide retention while maintaining isolation from atmospheric oxygen. Testing was performed over a sulfide concentration range from 100 to 1,000 mg/L. Higher levels of sulfide required higher loadings of scale inhibitor, essentially as a result of particle size increase. In addition, varying...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200685-MS
... Abstract Diethylenetriamine penta(methylenephosphonicacid) (DTPMP) is a commonly used phosphonate scale inhibitor for CaCO 3 and BaSO 4. Even though DTPMP can be squeezed into the reservoir, the duration of the flow back could be improved. Therefore, frequent injection is needed to maintain...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200701-MS
... Figure 5 A schematic of the mechanism of scale inhibitor retention adsorption to precipitation for common scale inhibitors Abstract The control of inorganic scale deposition within production wells by deployment of scale squeeze treatments is a well-established method for both...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200692-MS
... when performing waterfloods, especially with the injection of sulphate rich seawater into the often barium rich formation water present in the reservoir ( Jordan et al., 2008 ). To combat this issue, a scale inhibitor may be applied to the production well as a "squeeze" treatment where the inhibitor...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200656-MS
... of formation water and injection seawater. Sample location Degasser Vessel mixed well fluids Scale inhibitor applied yes, continual injection, inhibitor concentration > minimum inhibitor concentration (MIC) Sample location Test Separator single well flowing Scale inhibitor applied yes...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200679-MS
... There are less field experience data from the low temperature ranges. Low temperature often correlates with low pressure conditions, e.g. in the topside process system of the field. Scale inhibitor is usually injected continuously into these systems since the general scaling risk is higher...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200702-MS
... that may have interfered with the gold-chemical interactions and the spectra analysis. The produced water contains a mixture of different hydrocarbons without any scale inhibitor presence. Brine samples with scale inhibitor concentration varying from 0.25 ppm to 100 ppm were prepared usinga 500-ppm scale...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200687-MS
... The application of a scale inhibitor (SI) squeeze treatment is one of the most common techniques to prevent scale deposition in the oil industry ( Sorbie et al ., 1994 ; Mackay and Jordan, 2003 ). In this method, the chemical inhibitor is pumped down into the production well, where the SI...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200709-MS
... The scale inhibitor FeS efficacy laboratory tests used in this paper are either standard or slightly modified accepted industry test procedures. A series of lower molecular weight copolymers were prepared containing different Type B amine functionalised monomers. The new polymers were...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200693-MS
... adjust pH to designed values. Concentrated Na 2 S stock solution (100x) was also made. Anion brine pH was adjusted by purging CO 2 and N 2 . Bottle preparations used 49 mLs of anion brine with the desired amount of scale inhibitor added. 49 mLs of cation brine was added to the homogenized anion brine...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200675-MS
... and fluid viscosity have been applied to improve placement of scale inhibitor in the higher-pressure layers connected to the water injector. Chemical vendor simulations indicated that for a pressure variation below 5 bar adequate placement could be achieved with non-Newtonian fluids, however for higher...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200682-MS
... excitation, compared to most standard fluorescent molecules that emit within a few nanoseconds of being excited. Two approaches were considered for the ability of on site detection of polymeric scale inhibitors at low MIC (1-2ppm), namely, the development of F tagged sulphonated polymeric scale...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200694-MS
... Industry standard performance testing of scale inhibitors includes the static bottle and dynamic scale loop tests. These methods are well documented in literature ( Graham et al., 2002 and references therein; NACE TM0197-2010), as well as their modification to test under anaerobic conditions so...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200703-MS
...% choke before the treatments and 1.2MSm 3 at 6-7% choke after. Laboratory work combined with field experience from this first well that was treated, forms the basis for possible future treatments. Being able to treat wells through pro-active and efficient scale inhibitor squeeze treatments will allow...
Proceedings Papers

Paper presented at the SPE International Oilfield Scale Conference and Exhibition, June 24–25, 2020
Paper Number: SPE-200683-MS
... , Graham, Dyer et al, 2001 , Graham, Mackay et al, 2001 , Graham et al, 2002, Jordan et al, 2011 , Sørhaug et al, 2014 ,). When assessing potential alternative suppliers for active components used in scale inhibitors, a similar program should be used, and is summarized below: C B = cation...
Proceedings Papers

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

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