BOREHOLE GEOPHYSICAL: BOREHOLE SEISMIC

• Slim Hole Receiver (SHR)
  Baker Atlas performs downhole seismic services in environments ranging from slim- to large-diameter boreholes, vertical to horizontal wellbores, open and cased holes, and high-pressure and high-temperature well conditions.
• Single Level Receiver (SLR)
  Baker Atlas performs downhole seismic services in environments ranging from slim- to large-diameter boreholes, vertical to horizontal wellbores, open and cased holes, and high-pressure and high-temperature well conditions.
• Digital Multi Level Receiver (GEOCHAIN)
  Baker Atlas performs downhole seismic services in environments ranging from slim- to large-diameter boreholes, vertical to horizontal wellbores, open and cased holes, and high-pressure and high-temperature well conditions.
• Digital Multi Level Receiver (SST-500)
  Baker Atlas performs downhole seismic services in environments ranging from slim- to large-diameter boreholes, vertical to horizontal wellbores, open and cased holes, and high-pressure and high-temperature well conditions.
• Slim Single/Dual Analog Receiver (SSR)
  Baker Atlas performs downhole seismic services in environments ranging from slim- to large-diameter boreholes, vertical to horizontal wellbores, open and cased holes, and high-pressure and high-temperature well conditions.
• Slim Single 3C Gimballed Receiver (ESR)
  Baker Atlas performs downhole seismic services in environments ranging from slim- to large-diameter boreholes, vertical to horizontal wellbores, open and cased holes, and high-pressure and high-temperature well conditions.
• Single/Dual Analog Receiver (BSR)
  Baker Atlas performs downhole seismic services in environments ranging from slim- to large-diameter boreholes, vertical to horizontal wellbores, open and cased holes, and high-pressure and high-temperature well conditions.
• MLR Multi Level Receiver (MLR)
  Nautilus is Baker Atlas' range of high pressure and high temperature logging instruments, designed for performance and reliability in the most extreme conditions. New exploration horizons are extending the limits of borehole depths. As these limits are extended, the pressures and temperatures encountered become more challenging. Nautilus Hostile instrumentation is available for conditions up to 500 degrees F (260 deg C) and up to 30,000 psi (206 MPa). Nautilus delivers high-pressure, high-temperature reliability and performance, coupled with the measurement integrity and accuracy already delivered by our standard range of instrumentation. To qualify for the NAUTILUS signature, instruments must be rated above 400 deg F (204 deg C) and/or 20,000 psi (137.9 MPa). To find out if Nautilus HP, HT or HPHT instrumentation will meet the challenge of your next ultra hostile well, speak to a Baker Atlas representative.
• Single/Dual Analog Receiver (ASR)
  Baker Atlas performs downhole seismic services in environments ranging from slim- to large-diameter boreholes, vertical to horizontal wellbores, open and cased holes, and high-pressure and high-temperature well conditions.
• Slim Digital Multi Level Receiver (MSR)
  Baker Atlas performs downhole seismic services in environments ranging from slim- to large-diameter boreholes, vertical to horizontal wellbores, open and cased holes, and high-pressure and high-temperature well conditions.
• Downhole Seismic Equipment (SEISMIC EQUIPMENT)
  Flexible downhole equipment ? powerful surface systems and energy sources.On every survey, from a checkshot to a 4-D VSP, seismic specialists are equipped with precisiondownhole seismic sensors, a variety of energy sources, and the latest in digital data acquisitionsystems to deliver superior data quality. Surveys are conducted using Single Level Receivers (SLR)and Multi-Level Receivers (MLR) in vertical, deviated, andhorizontal wells to efficiently tie surface seismic data topetrophysical parameters, improving reservoir characterization.Baker Atlas utilizes a purpose-built, integrated borehole seismicdata acquisition system. This system combines powerful surfacerecording computers and multiple 3-component downholereceivers with integrated energy source controller and navigationsystems to provide the most accurate information in less time.
• Zero Offset VSP (ZVSP)
  The unique geometry of a zero offset VSP allows for multiples, recorded above the depth of the deepest receiver, to be identified and removed. The end result is a zerophase, primaries-only dataset. This dataset can be used to identify residual multiple reflections on the surface seismic data, as well as to phase and frequency match the surface seismic data to the zero-phase VSP.
• Velocity Survey (CHECKSHOT)
  Travel-time measurements are acquired with receivers placed at known depths in a well. These measurements produce accurate time-depth and seismic velocity results that can be used to calibrate well log data. Velocity survey information is presented as time-depth correlation plots and detailed velocity tables. Borehole seismic-generated velocity information is used to calibrate acoustic well log data and produce accurate synthetic seismograms. Synthetic seismograms link surface seismic time-domain information with high-resolution, depth-domain well log data.
• Vertical Incidence (VIVSP)
  In a deviated well, the sources are moved to a position vertically above the center of the receiver array. As the receivers are moved, the source is also moved. This provides accurate velocity profiling for deviated wells, plus 2D imaging beneath the well.
• Offset VSP (OVSP)
  An Offset VSP describes a survey where the surface source is laterally offset some distance from the receiver in the well . This extends the subsurface data coverage to some distance from the well, improving the resolution of the seismic image in that area.
• Walkaway VSP (WVSP)
  Walkaway VSPs, where the receiver array is fixed in the well and the source is moved along the surface can be used for a variety of purposes. These include 2D imaging, AVO calibration, Anisotropy studies, tomography studies and shear wave analysis.
• 3D VSP (3DVSP)
  3D VSP is an extension of the Walkaway VSP into the third dimension, extending coverage to a 3D volume around the well. These can be used for detailed reservoir characterization, 3D AVO and anisotropy studies, 3D tomography, time lapse studies and geosteering. When simultaneously acquired with surface seismic data, the 3DVSP provides a powerful multicomponent calibration AVO for many surface seismic problems.
• 3D Salt Proximity (SALT PROXIMITY)
  Salt proximity surveys measure seismic energy propagating through and reflected from salt structures. Data is used to map complex salt surfaces in areas where surface seismic data yield ambiguous results or are unavailable.
• Downhole Seismic Services (DSS)
  From simple time-depth data to imaging deep into the reservoir, Downhole Seismic Services provide the link between geophysics and geology. Our services can be used to enhance surface seismic resolution, provide depth correlation to logs , and image stratigraphic and structural anomalies. From a simple cased hole checkshot survey to multilevel 3-D and 4-D VSPs, Baker Atlas has the acquisition solution for every need.