Schlumberger

Productivity Analysis

Meet your production objectives in small-, intermediate-, or large-scale test operations

Reservoir properties like permeability can be measured at a small scale through laboratory tests on cores and at a large scale via well tests and production data. Bridging the gap between these scales are several formation testing procedures that can be performed to measure formation properties at the intermediate scale.

Schlumberger reservoir domain experts can help you decide which type of formation test meets your requirements. For instance, the modern MDT modular formation dynamics tester has many possible probe and packer configurations; our domain experts can design the appropriate test and configure the tool to meet the test requirements. We provide real-time support during testing operations and then perform detailed data analysis to determine the desired reservoir parameters.

Mini-DST

A mini-DST includes a dual-packer formation flow test for fractured, vuggy, or dual porosity reservoirs. It can also be used when a larger flow area is desired. Schlumberger productivity experts can plan the test and analyze data to estimate reservoir properties such as permeability, skin, and radial extrapolated pressure. Under certain conditions, we can perform a single well simulation and estimate the absolute open flow potential for a given reservoir. 

Vertical interference testing

A vertical interference test is a two-probe test used to determine vertical permeability and identify flow barriers in a reservoir. After petrophysical analysis and an investigation of layering, often done vie borehole images, our domain experts can help you decide where to conduct the test and design an appropriate test procedure. Interpretation of the pressure response at the two probes allows us to determine the permeability of the interval between the probes. 

Interval pressure transient testing

An interval pressure transient test uses three or more probes. Horizontal and vertical permeability can be determined as well as storativity. Schlumberger specialists use unique customized software for analysis in vertical or deviated wells, including uncertainty analysis depending on system complexity and available fluid and formation information. Interval pressure transient testing results are valuable for reservoir modeling and field-development planning such as comparing the advantages of slanted wells versus horizontal wells on reservoir productivity and drainage area.

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