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Fluids Sampling: The collection of fully representative samples is a critical phase
of any PVT/Fluids analysis study and well data gathering program. Core Lab works
with our clients to help design a fluids sampling campaign that collects the correct
type, quantity and volume of samples for onshore laboratory analyses. Core Lab provides
"PVT laboratory trained" sampling engineers for collection of single phase bottom-hole
samples, wellhead samples and separator gas and liquid samples for PVT studies.
Atmospheric oil/condensate samples and produced water samples are also collected
for Crude Assay, Production Chemistry and Flow Assurance studies. Core Lab provides
equipment for collection of pressurized and atmospheric samples in certified and
approved containers for safe transport to our test laboratory.
Onsite DST Gas & Liquid Analysis: A DST is the ideal opportunity to obtain critical
information on produced fluids for field development, process design and for pipeline
specification. It is not always possible or applicable to obtain this information in
a laboratory environment due to various factors such as trace concentrations,
reaction/losses to sampling cylinders, short half-life and sample volume requirements.
Onsite analysis during an extended flow period enables Core Lab to provide our clients
with the most accurate and reliable data for several key components such as Hydrogen
Sulphide (H2S), Total Mercaptans, Mercury and Radon.
Onsite Water Analysis: It is not uncommon to find produced water in the test separator
during a DST and the source can only be confirmed by performing some onsite analyses.
Core Lab provides a complete service to determine the physical properties and composition
of produced water sample. Additional services can be provided for water injection wells to
determine the particle counts and size distribution of any solids material.
Sampling Containers: Core Lab provides a complete range of sampling cylinders for collection
of pressurised gas and liquid samples and for long term sample storage purposes. The correct
type and quantity of equipment is agreed with the client during the planning and design phase
of the study. Core Lab also supplies a wide range of containers for collecting and storing
atmospheric samples. These are supplied in various sizes and materials, depending on the type
of fluids being sampled, as well as the type of analysis being performed. These include IATA
approved steel cans, glass bottles and HPDE plastic bottles and all container must adhere to
International transport regulations to allow them to be safely transported by air, sea or road
Specialised Sampling Containers: It is not practical to provide all analyses at the wellsite and
it is necessary to collect some samples in specialised containers for onshore laboratory testing.
Core Lab provides Sulfinert coated cylinders for collection of pressurised gas and liquid samples
for detailed sulphur speciation analysis. We also recommend pre-treated containers for collection
of atmospheric liquid samples for mercury and arsenic testing.
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