SPE Asia Pacific Oil and Gas Conference and Exhibition 2004
DOI: 10.2118/88637-ms
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Obtaining Formation Water Chemistry Using a Mud Tracer and Formation Tester in a North Sea Subsea Field Development

Abstract: Precipitation from and corrosion by formation water co-produced with target hydrocarbons can cause serious problems, and an early knowledge of water chemistry is important for completion and facilities design. Owing to the high cost of interventions, this knowledge is particularly important in deepwater developments and subsea completions. Samples of formation water are obtained by producing from the well completed in the water leg or sampling after water production occurs naturally. The form… Show more

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Cited by 8 publications
(2 citation statements)
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“…Three mud tracers were employed to quantify mud-filtrate contamination and cleanup progression: iodide and bromide tracers would allow a post-job chemical analysis to be performed on the recovered fluids to assess the level of filtrate contamination, and a water-soluble blue dye [Optitrak-600 1 (Hodder et al 2004)], having an optical absorption peak at approximately 600 nm, would allow the progress of cleanup to be monitored with the sampling-tool spectrometer during pumping. The concentrations of the tracers and blue dye in the mud were continuously monitored and adjusted during the SWD operations by an on-site mud engineer.…”
Section: Swd Experimentsmentioning
confidence: 99%
See 1 more Smart Citation
“…Three mud tracers were employed to quantify mud-filtrate contamination and cleanup progression: iodide and bromide tracers would allow a post-job chemical analysis to be performed on the recovered fluids to assess the level of filtrate contamination, and a water-soluble blue dye [Optitrak-600 1 (Hodder et al 2004)], having an optical absorption peak at approximately 600 nm, would allow the progress of cleanup to be monitored with the sampling-tool spectrometer during pumping. The concentrations of the tracers and blue dye in the mud were continuously monitored and adjusted during the SWD operations by an on-site mud engineer.…”
Section: Swd Experimentsmentioning
confidence: 99%
“…Let ⍀ represent the optical density (absorbance) at wavelength (Hodder et al 2004) of a binary mixture of fluids, the components of which have individual optical densities of ⍀ f and ⍀ w . According to the Beer-Lambert rule, the optical density of the mixture is a linear combination of the optical densities of the individual components at the same wavelength weighted by their concentrations.…”
Section: Appendix A-contamination Estimationmentioning
confidence: 99%