Reservoir Pressure While Logging Services | Schlumberger

PressureXpress

Reservoir pressure while logging service

Fast, accurate pressure and mobility measurements on the first logging run

PressureXpress reservoir pressure while logging service reduces the pressure testing process to less than a minute in most cases. During the first logging run, you’ll get accurate real-time data measured in a fraction of the acquisition time required by conventional multifunction formation testers that also collect fluid samples. By focusing on pressure measurement, operations are reliable and efficient. Minimized setting and retracting times streamline survey cycles.

The dynamically controlled enhanced pretest system incorporated in PressureXpress service gives precise control of volume and drawdown rates. You’ll achieve drawdown and buildup profiles with greater precision than possible with conventional hydraulic technology.

300-degF temperature rating
20,000-psi pressure rating
<1-min typical measurement time
PressureXpress service required a fraction of the time necessary for conventional testing tools to acquire the pressure reading.
PressureXpress service required a fraction of the time necessary for conventional testing tools to acquire the pressure reading.
PressureXpress service required a fraction of the time necessary for conventional testing tools to acquire the pressure reading.

Data you can use right away

PressureXpress service quickly generates a reservoir pressure survey for connectivity analysis, the pressure gradient for fluid density and fluid contact information, and mobility and permeability data to aid in sampling-point selection. 

And throughout the life of the reservoir

Data from PressureXpress service is the basis for accurate pressure profiles and mobility measurements that you can integrate with petrophysical, seismic, and conventional log data for a more complete reservoir picture. The more comprehensive your model is, the better you can design your completion and ultimately improve productivity.

Minimize sticking risk

The slim OD and profile of PressureXpress pressure while logging service greatly reduce the risk of sticking. The eccentered tool shape, combined with a slight overbalance in setting force by the backup anchoring pistons, ensures an integral 1/2-in standoff from the formation during pretesting.

The smooth exterior profile also minimizes mudcake scraping during conveyance of PressureXpress service. There are no external tool angles over 20°.

The smooth profile and small OD of the PressureXpress tool minimize the risk of sticking.
The smooth profile and small OD of the PressureXpress service minimize the risk of sticking.

Interpretation

Compatible with most openhole services, including the Platform Express integrated wireline logging tool and its foundational measurements for formation evaluation, PressureXpress reservoir pressure while logging service specifically conducts pressure and mobility testing. On the first logging run, a reservoir pressure survey can be quickly generated for connectivity analysis, along with the pressure gradient for fluid density and fluid contact information and fluid mobility determination to aid in sampling-point selection.

These data are the basis for accurate pressure profiles and mobility measurements that you can integrate with petrophysical, seismic, and conventional log data for a more complete reservoir picture. Our expert, multidisciplinary geoscientists and engineers work with you as needed to achieve an integrated interpretation, employing advanced workflows and software such as the Techlog wellbore software platform to maximize the value of your logging data and achieve the fullest possible understanding.

Interpretation Services for PressureXpress Reservoir Pressure While Logging
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