Schlumberger’s PathFinder introduced its iPZIG at-bit inclination, gamma ray and imaging service, which utilizes its technology to optimize well placement in target zones through early, bed-boundary detection.

Developed specifically for unconventional oil and gas markets and high-efficiency drilling applications, the iPZIG service offers greater directional control and accuracy while drilling versus conventional technologies with sensors placed directly behind the drill bit, according to PathFinder.

Using data from the service, changes in lithology and bottomhole assembly orientation are quickly identified and rapid steering decisions are made to stay in the production zone longer, the company noted.

“The iPZIG service provides the closest to-the-bit sensor offsets available in the industry. It is the only tool to provide total and imaged natural gamma ray data with dynamic inclination measurements at the bit,” said Derek Normore, president, PathFinder. “Geosteering adjustments in the well trajectory can be made quickly, which reduces directional drilling risks and allows for optimal well placement in critical hole sections.”

The service has been successfully field tested in coal-bed methane, heavy oil and shale plays in North America and Australia. One North American, shale-play operator drilled a 5,000-ft, 8½-in lateral section in an abrasive formation using the at-bit measurements to control well trajectory to stay in the target zone 100% of the time. Geological features identified from the real-time images aided in the geosteering interpretation, the company stated.