Crossed-dipole sonic tool with four monopoles delivers high-resolution, elastic properties
Talk to an expertThe Halliburton Xaminer® Sonic Imager (XSI™) service delivers a new standard in acoustic formation evaluation. Designed for both open- and cased-hole environments, the XSI service provides high-resolution data that helps operators better understand formation properties, reduce uncertainty, and improve well planning.
The XSI service is engineered to perform in a wide range of reservoir conditions—from high-porosity, gas-saturated sandstones to tight carbonates. It captures compressional and shear-wave velocities in real time, without the need for dispersion correction, and delivers accurate formation measurements beyond the altered zone. These capabilities support more reliable seismic processing, geomechanical modeling, and completion design.
The XSI service integrates Halliburton’s advanced acoustic components into a single tool string. It features four broadband monopole sources and crossed-dipole receivers that enable precise measurement of fast and slow shear-wave velocities. The tool’s onboard memory ensures data integrity at high wireline speeds, while in-hole programmability allows quick configuration changes between logging programs.
Operators can use the XSI service for a range of applications, including cement bond evaluation, radial profiling, altered zone detection, and acoustic imaging. It also supports Stoneley wave analysis for fracture identification and vertical transverse isotropy measurement using Thomsen gamma (γ).
The XSI service minimizes the need for additional tools or post-processing corrections. It delivers continuous sampling from 1 to 20 feet, enabling near- and far-field formation analysis in a single run. Real-time telemetry provides compressional, dipole shear, and Stoneley slowness data, helping teams make faster, more informed decisions at the wellsite.
The tool’s rugged design supports high-pressure, high-temperature environments—up to 350°F (177°C) and 20,000 psi (138 MPa). It operates in boreholes ranging from 4.5 to 22 inches and extends logging capabilities in formations with slownesses up to 1,500 µs/ft.
CASE STUDY
In Ghana’s ultradeepwater, Halliburton used the Xaminer® Sonic Imager tool (XSI) to help Aker Energy complete a highly deviated sidetrack and confirm additional reserves—saving 80 rig hours and $3.3 million. See how XSI delivered results in one of West Africa’s most complex wells.
READ case studyMinimum hole size
Downhole memory
us/ft Shear slowness
Monopole transmitter spacing
The XSI service helps operators make better decisions across the well lifecycle by delivering high-resolution data that improves seismic processing and supports 3D formation stiffness modeling. It enhances geomechanical analysis, enabling more accurate wellbore stability assessments and optimized completion designs.
The service also supports fracture identification and anisotropy evaluation, providing deeper insight into reservoir behavior. By minimizing the need for additional tools or post-processing corrections, the XSI service reduces operational time and cost. Its high data integrity ensures confidence in both real-time decision-making and post-job analysis, even in complex or high-risk environments.
The XSI service is part of Halliburton’s comprehensive formation evaluation portfolio, which helps operators fully characterize and assess a reservoir’s production potential. By integrating high-resolution data with geoscience software and real-time analytics, Halliburton enables better well placement, improved wellbore stability, and optimized completions. These solutions are tailored to meet the specific requirements of each reservoir, supporting better decisions throughout the life of the well.
StrataXaminer™ provides more accurate well data to better evaluate production potential and increase return on investment.
The XRMI provides high resolution formation images in conductive, water-based mud systems.
