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Logging-While-Drilling (LWD)

The economics behind geosteering or high-cost drilling can cost-justify using logging-while-drilling (LWD) sensors to acquire data in real time. Halliburton uses LWD sensors to help direct high-angle and horizontal drilling, and to ensure efficient use of expensive rig time.

Sperry Drilling services leads the industry with the largest and most robust high pressure, high temperature offering, and invests in significant research and development in HP/HT technology. In HP or HT wells, equipment is required to withstand temperatures higher than 300°F/149°C and pressures above 18,000 psi/124 MPas. Today, the majority of Sperry Drilling's measurement/logging-while-drilling (M/LWD) tools are rated to 347°F/175°C and 25,000 psi/172 MPas.

Sperry now offers ExtremeHT-200™ M/LWD sensors (392°F/200°C and 20,000 psi/138 MPas) and UltraHT-230™ M/LWD sensors (446°F/230°C and 30,000 psi/207 MPas), making it possible to operate reliably at higher temperatures than ever before and gaining access to reservoirs that were previously uneconomical.

	eChartBook™ - Environmental Correction Chart Calculator
	An interactive application that includes charts for all of Halliburton's major LWD and wireline sensors, such as gamma ray, resistivity, density and neutron porosity.
	ExtremeHT-200™ MWD/LWD Sensors
	Extend the reach of current MWD/LWD sensors to temperatures of 175°C (347°F) to 200°C (392°F), providing reliable directional data and steering capabilities in the most extreme downhole environments.
	SOLAR® Suite of MWD/LWD Services
	Sperry Drilling's suite of SOLAR® MWD/LWD services allows for the delivery of exceptional performance even under the most extreme downhole conditions.
	UltraHT-230™ M/LWD Sensors
	MWD/LWD Sensor designed to function under the high shock and vibration encountered while drilling in temperatures of up to 230° C (446° F).

	ExtremeHT-200™ MWD/LWD Sensors Provide reliable performance in operations at temperatures from 347°F/175°C to 392°F/200°C.

	UltraHT-230™ MWD/LWD Sensors Developed with Total, Sperry’s Ultra230-HT sensors provide the industry’s only M/LWD capabilities rated to ultra-high temperatures of 446°F/230°C.