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Saturn 3D radial probe Saturn Fluid flow and pressure measurement where not previously possible Applications ■ Fluid sampling and DFA for – Low-permeability formations – Heavy oil – Fluids with a bubble- or dewpoint near reservoir pressure – Unconsolidated formations ■ Formation fluid sampling – Rugose boreholes ■ Downhole fluid analysis (DFA) ■ ■ Formation pressure measurement ■ Fluid-gradient determination ■ ■ 1 Benefits Far-field permeability measurem
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  Saturn 3D radial probe  Saturn Benefits ■ Fluid sampling and DFA for – Low-permeability formations – Heavy oil – Fluids with a bubble- or dewpoint near reservoir pressure – Unconsolidated formations – Rugose boreholes ■ Low-permeability formation pressure testing ■ Interval pressure transient testing (IPTT) with reduced storage for fast flow-regime identification Applications ■ Formation fluid sampling ■ Downhole fluid analysis (DFA) ■ Formation pressure measurement ■ Fluid-gradient determination ■ Far-field permeability measurement and anisotropy determination ■ Well testing design optimization Fluid flow and pressure measurement where not previously possible  Features ■ Combinable with all MDT* modular formation dynamics tester modules ■ High-temperature rated to 350 degF ■ 8,000-psi differential pressure rating between flowline and hydrostatic pressure ■ Low storage effect ■ No sump, eliminating fluids mixing with stationary mud ■ Four field-replaceable, elliptical ports ■ 79.44-in 2  total surface flow area ■ Individual port filters to prevent flowline plugging ■ Self-sealing drain assembly for excellent seal maintenance during sampling in any quality of borehole    Surface area open to flow and pressure drawdown Successful wireline fluid sampling and DFA begin with accessing a representative sample of the virgin reservoir fluid, ideally in a minimum amount of time. Formation pressure testing similarly requires fluid withdrawal.The fluid extraction is typically conducted with a probe module that includes a packer,  telescoping backup pistons, and a flowline. The pistons extend the probe and packer assembly against the borehole wall to provide a sealed fluid path from the reservoir  to the flowline. The governing principle behind flowing any fluid from a reservoir for formation testing is Darcy’s law, in which flow ( q ) is a function of permeability ( k  ), drawdown pressure ( dp ), surface area open  to flow (  A ), fluid viscosity (  μ ), and the length (  L ) over which the drawdown is applied. Flow from the formation to a conventional formation tester is narrowed to the intake of the single probe, not from the entire circumference of the borehole wall. A revolution in sampling and pressure-testing technology The self-sealing Saturn* 3D radial probe enables true 3D circumferential flow in the formation around the borehole, significantly reducing the time needed  to obtain representative formation fluids and extend fluid sampling and downhole fluid analysis (DFA) to what were previously challenging environments: - low-permeability formations- heavy oil- near-critical fluids - unconsolidated formations - rugose boreholes.The low storage volume of the Saturn probe’s design not only facilitates fluid sampling and DFA but also the efficient performance of complete pressure surveys in extremely low-permeability formations. The keys to fluid acquisition and pressure pretests  µ kA LdP    q
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