Borehole Size Monitoring

Measurements of borehole diameter are made using acoustic pulse-echo sensors. The sensors measure the transit time of acoustic waves between the sensor and the borehole wall and transmit the results to the surface in real time. The surface computer system uses this information to derive the corresponding stand-off distance and borehole diameter, based on the calculated acoustic velocity of the borehole fluid under downhole conditions. The acoustic sensors also record detailed data in memory, which is processed after the run to derive measures of borehole shape, ellipticity and ellipse orientation.

9½-inch ALD™ Azimuthal Lithodensity Logging-While-Drilling (LWD) Service
The 9-1/2-inch ALD™ Azimuthal Lithodensity Logging-While-Drilling (LWD) service from Halliburton is the industry’s first and only service that delivers high-quality azimuthal density and ultrasonic caliper measurements in real-time for deepwater boreholes ranging from 14-1/2 inches to 17-1/2 inches.
CTN™ Compensated Thermal Neutron Sensor
LWD neutron porosity tool provides accurate formation porosity, fluid typing and lithology (in combination with density). Larger tools also feature an acoustic caliper, used to correct the neutron porosity measurement for borehole effects and to provide measurements of borehole size.
XBAT™ Azimuthal Sonic and Ultrasonic LWD Service
LWD sonic tool with multipole transmitters and four azimuthal receiver arrays along with a 4-pinger acoustic caliper.

Borehole Size Monitoring

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Summary Summary Gulf of Mexico: Sperry Combines ALD™ and DGR™ Sensor Data for Innovative Solution in Difficult GOM Deepwater Well Sign in required
In this deepwater well in the Gulf of Mexico, the customer began experiencing problems with the borehole after successfully drilling to the conventional core point of the main reservoir.
Summary Summary Norway: Operator saves at least two days by running XCAL™ LWD caliper tool to determine hole quality and proper cement calculations Sign in required
To develop an offshore well in Norway, an operator needed to perform proper cement calculations, confirm that the hole was properly reamed, and evaluate packer placement for completion.
Summary Summary ALD™ Azimuthal Lithodensity Sensor Datasheet
Providing High-Quality Density Measurements and Formation Images
Summary Summary XBAT™ Azimuthal Sonic and Ultrasonic LWD Service
The XBAT LWD service delivers accurate acoustic measurements in a wide range of formations via sensors and electronics.
Summary Summary CTN™ Compensated Thermal Neutron Sensor
Identifying Complex Lithologies and Gas
Summary Summary 9½-inch ALD™ Azimuthal Lithodensity Logging-While-Drilling (LWD) Service
The 9-1/2-inch ALD™ Azimuthal Lithodensity Logging-While-Drilling (LWD) service from Halliburton is the industry’s first and only service that delivers high-quality azimuthal density and ultrasonic caliper measurements in real-time for deepwater boreholes ranging from 14-1/2 inches to 17-1/2 inches.
Summary Summary CTN™ Compensated Thermal Neutron Sensor
LWD neutron porosity tool provides accurate formation porosity, fluid typing and lithology (in combination with density). Larger tools also feature an acoustic caliper, used to correct the neutron porosity measurement for borehole effects and to provide measurements of borehole size.
Summary Summary XBAT™ Azimuthal Sonic and Ultrasonic LWD Service
LWD sonic tool with multipole transmitters and four azimuthal receiver arrays along with a 4-pinger acoustic caliper.
Summary Summary Borehole Size Monitoring
Borehole size monitoring
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