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Reservoir Fluids

Production and Analytical Chemistry


Water Analysis: It is critical for any field development to have a detailed composition of the formation water to assess the potential for inorganic scale to be formed during pressure depletion or water injection. Samples collected from exploration and appraisal wells are analysed for API 12 ion composition, sulphate content and volatile organic acid concentrations. The composition of produced water and residual scale inhibitor concentrations also measured on a regular basis to monitor changes to the produced water composition. Residual scale inhibitor concentrations are monitored to evaluate the effectiveness of continual chemical injection or periodic squeeze treatments.


Water Analysis Water Analysis


Crude Oil: The physical and chemical properties of stock tank crude/condensate must be measured as the information is essential for crude valuation, fluid processing, refineries, transportation and to assess flow assurance issues. A detailed crude oil assay is performed to determine boiling range distribution and cut point yields of stock tank liquids up to 575°C. Further chemical analysis is performed on the distillate fractions/residues and the results used for crude oil trading and refining purposes.


Crude Oil Crude Oil


Fluid Compatibility: Core Lab performs testing to investigate possible production problems caused by mixing two or more produced fluids. A wide range of tests can be performed including Emulsion studies (water / oil), Scaling studies (water / water), Fluid blending studies (oil / oil) and Gas injection studies (gas / oil).


Fluid Compatibility


Chemical Evaluation: Deployment of oilfield chemicals can be a significant cost during field development. Core Lab provides an Independent review of third party chemical products to evaluate performance and efficiency for optimal application. Testing can be performed on various products such as demulsifiers, wax inhibitors, asphaltene inhibitors and anti-foaming agents.


Chemical Evaluation Chemical Evaluation Chemical Evaluation


Mercury Analysis: Core Lab determines trace concentrations of mercury in hydrocarbon liquids, produced waters and solids by ASTM D6722 test method. Samples must be collected in specialised containers to provide accurate and reliable data


Mercury Analysis

Accurate determination of naturally occurring mercury in reservoir fluids is required to assist with facilities design which may require its removal. Mercury has a detrimental impact on corrosion, the environment and the refinery process.



Deposits: A comprehensive analysis of a deposit sample can provide critical information on the source and help our customers to decide on the most appropriate and cost effective remedial action. Core Lab provides a range of services to determine fluid nature, characteristics, composition, crystal structure using ICPAES, GC, SEM, EDX, XRD and FTIR techniques Typical deposits include corrosion products, inorganic scales, chemical residues, sand, mud solids etc.


Deposits Deposits

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