Centerfire™ – Smart Drilling Solutions for Formation Evaluation

Built for Performance GE Energy offers the latest in propagation resistivity systems. Centerfire™ is built to deliver the unique performance advantages demanded by today’s drilling operators. Leading performance advantages integrated into the system include:

• Retrievable MWD Probe—GE Energy Centerfire uses the field-proven GE Energy MWD probe, which is strategically mounted above the resistivity collar for easy retrieval and reduction of costly rig downtime. The product continues to leverage the universally sized Tensor MWD probe for transmitting data to the surface. The resistivity collar will be offered in three nominal O.D. sizes: 4.75, 6.75 and 8.25 inches.

• Multiple Depths of Investigation—Eight different depths of investigation are possible-with two frequencies, 2 MHz and 400 kHz, and two sets of transmitter spacings-ensuring a more complete formation evaluation. All raw data is saved in the 14 MB downhole system memory in addition to the GE Energy MWD probe’s 8 MB memory. The realtime telemetry is rigsite configurable.

• Performance Reliability and Measurement Quality—Centerfire ensures optimal performance and measurement quality through several distinctive design features:

§         Compensation: The system is designed around a dual receiver/quadruple transmitter array, symmetrically oriented to eliminate downhole temperature and pressure effects. As a reliability enhancement, the array provides measurement redundancy in having two frequencies and two independent sets of transmitter-receiver spacings.

§         Vertical Resolution: The system provides a leading 6-inch thin bed resolution.

§         Measurement Range: Wireline quality measurements are made up to 2000 ohmms in all mud types.

§         Antenna Design: Patented design to optimize measurement quality and performance reliability.

• Higher Operating Temperatures—Mirroring the high-performance GE Energy MWD Probe, the Centerfire Resistivity System can operate at temperatures up to 175°C, adding increased depths of service into your portfolio.

• Complements the GE Gamma Module—The GE Centerfire is complemented by GE’s industry leading probe based Gamma Module, which can be run below the resistivity sub or above it in the MWD tool string, in accordance with operators requirements. This flexibility allows the sensor to be placed closer to the bit or in the MWD string for easy retrieval in problematic hole conditions.

Commitment to Quality

Centerfire’s design process leverages GE Energy’s commitment to quality—a goal of eliminating defects to enhance performance and measurement accuracy. The rigorous design milestones and the extensive field tests this innovation has undergone ensures that we deliver the quality our customers have come to expect from GE.

Independently Manage Your MWD Program

Centerfire is available for direct purchase, allowing customers to optimize their MWD program with resistivity-gamma logging capability.

Performance Benefits

• Greater Operating Flexibility—Add the system to your toolkit to meet specific project requirements.

• Multiple Depths of Investigation—400 kHz and 2 MHz propagating wave technology enables comprehensive formation evaluation for accurate measurements over a broad formations and borehole fluid types.

• Optimal Measurement Quality and Performance Reliability—Designed for Optimal Measurement Quality and Performance Reliability.

• Operates to 175ºC—The system operates at temperatures up to 175°C in water and oil-based drilling fluids, and flow rates up to 1200 gpm.

• Reduction in Costly Rig Downtime—The probe based MWD is seated in a muleshoe above the resistivity sub and is fully retrievable, reducing costly rig time and reducing potential ‘lost in hole’ cost to the operator.

Performance Enhancers

• Tripping Application—The resistivity system can be run independently, under its own battery power to produce recorded measurements from wiper trips or tripping in and out of the hole. Centerfire is deployed with its own 14 MB memory.

 

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For the current status of this product please visit http://www.gepower.com/prod_serv/products/oc/en/reuter_stokes/oil_expl_sys/centerfire.htm

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