Resistivity System determines presence of oil and gas.

Press Release Summary:

Centerfire(TM) Resistivity System provides formation evaluation data while hole is being drilled. MWD probe mounted above resistivity collar facilitates retrieval and data transmission to surface. Tool combines multiple transmitter spacings and separate frequencies for accurate and stable readings, and is available in sizes with 4.75, 6.75, and 8.25 in. OD. System operates at temperatures to 175°C in water and oil-based drilling fluids, and in flow rates to 1,200 gpm.

Original Press Release:

GE Energy Announces Resistivity Tool for Down Hole Drilling

CALGARY, CANADA-June 9, 2004-GE Energy introduced the Centerfire(TM) Resistivity System this week at the Global Petroleum Show. GE Energy also announced today that Drillog Petro-Dynamics Limited, a Nigeria-based energy company, would take delivery of the first Centerfire system in June 2004.

Down hole resistivity systems provide formation evaluation data while the hole is being drilled. Resistivity measurements are used to determine the possible existence of oil or gas and, when used in conjunction with gamma ray information, provide insight into the type of formation through which the hole is being drilled.

Centerfire complements GE's existing fleet of Measurement While Drilling (MWD) systems and enables independent service companies to extend technology offerings, service new markets and allow for future growth.

The Centerfire resistivity system, developed and tested leveraging Six Sigma methodology, has successfully completed full-system testing of more than 500 drilling hours and more than 1,200 circulating hours. GE's MWD probe, used in conjunction with the Centerfire resistivity tool, is mounted above the resistivity collar for easy retrieval and data transmission to the surface. Three different tool sizes will be available with outside diameters of 4.75, 6.75 and 8.25 inches, allowing the tool to be used in a wide range of hole sizes.

GE Energy's resistivity tool combines multiple transmitter spacings and separate frequencies to allow the tool to automatically compensate for the effects of down hole temperature and pressure, creating more accurate and stable readings and reducing time spent with temperature characterization.

"Our new Centerfire product enables oil field service providers to deliver world-class directional and formation evaluation services to their customers, saving time and money," said Ricardo Artigas, president, energy services, GE Energy. "Our partnership with Drillog demonstrates the strength and confidence in GE Energy's formation evaluation offering and we look forward to continuing to our relationship with future projects."

"The operational flexibility and measurement precision of this tool makes Centerfire the right choice for Drillog," said Obi Ralph Ekezie, managing director, Drillog Petrodynamics Ltd. "We anticipate enhanced efficiency and a more profitable offering by upgrading our services capabilities with Centerfire."

The system operates at temperatures up to 175 degrees Celsius in water and oil-based drilling fluids and in flow rates up to 1200gpm. The Centerfire Resistivity tool utilizes its own battery power and can be run independently of the the MWD Probe to produce recorded measurements from a wiper trip.

The MWD system is designed for easy and efficient transportation to the jobsite. The system's modular design provides MWD services in a single, flexible system with a variety of collar diameters, from 3.5" to 9.5", to accommodate flow ranges from 75 to 1200 gpm. Additionally, GE Energy's MWD solution is fully retrievable, minimizing rig downtime and financial risk.

Drillog Petro-Dynamics Limited (PDL) is registered in Nigeria and works to progressively provide a full range of high quality drilling services to the Nigerian oil and gas industry.

About GE Energy

GE Energy ( is one of the world's leading suppliers of power generation and energy delivery technology, with 2003 revenues of nearly $18.5 billion. Based in Atlanta, Georgia, GE Energy provides equipment, service and management solutions across the power generation, oil and gas, transmission and distribution, distributed power and energy rental industries.


For more information, contact:

Dennis Murphy

GE Energy

(770) 859-6948

Gina DeRossi or Howard Masto

Masto Public Relations

(518) 786-6488

More from Sensors, Monitors & Transducers

All Topics

COVID-19 Response Suppliers COVID-19 Response:
Can Your Company Help Provide Critical Supplies?

We are using the power of our platform to aid in the mass shortage of critical supplies. If your company can help provide supplies, capabilities, or materials for products such as N-95 Masks and Tyvek SuitsPlease let us know.

COVID-19 Response Suppliers