OmniSphere Slimhole Petrophysics Evaluation-While-Drilling Service
The OmniSphere service provides customers with a family of advanced, all-inclusive petrophysical formation evaluation offerings to reduce drilling risks while drilling, particularly in slimhole horizontal sections. Included with the OmniSphere service is an unmatched domain expertise locally implanted to provide sound interpretation of the widest range of measurements to enable improved completion strategies.
OmniSphere RGM* slimhole petrophysics evalution-while-drilling service
The OmniSphere RGM* slimhole petrophysics evalution-while-drilling service was developed for directional drilling and formation evaluation applications in slim holes—onshore or offshore. Capable of both continuous and static direction and inclination surveying, gamma ray, and resistivity measurements for 5¾-in hole sizes and larger, the OmniSphere service measures formation resistivities at multiple depths of investigation using an electromagnetic antenna array of five transmitters and two receivers. Measured data is transmitted at physical rates up to 6 bps with the contingency frame set list feature.
Compatible with Schlumberger RSS and LWD services for complete real-time formation evaluation services, the OmniSphere RGM service incorporates the QuikSurvey service that streamlines the well construction process. This patented service acquires surveys while the mud continues circulation because it triggers a survey when pipe rotation ends rather than when mud pumps cease. The QuikSurvey service eliminates the need to alter the flow rate in order to take a stationary direction and inclination survey.
In combination with the QuikSurvey service, shared power through batteries of the VPWD* collar-mounted verified pressure-while-drilling service enables pumps-off direction and inclination surveys to further minimize surveying time. As a result, the OmniSphere RGM service significantly reduces borehole instability risks and stuck pipe incidents while increasing the efficiency in survey time—especially in highly permeable formations.
The OmniSphere RGM service features mechanical and electronic components that improve survey acquisition methodology while further reducing failure rates. Corrosion- and shock-resistant features further extend service reliability in challenging drilling environments, including hightemperature applications.
APPLICATIONS
Directional drilling and formation evaluation in slim holes
Harsh and complex drilling environments
Casing while drilling (CWD)
BENEFITS
Reduces surveying time
Improves the reliability of the integrated MWD
Mitigates borehole instability risk and stuck pipe
Endures severe shock and corrosive muds
Eliminates need to alter flow rate to enable static direction and inclination survey
FEATURES
Real-time continuous and static direction and inclination surveying
Azimuthal gamma ray
Ten multidepth resistivities
Corrosion-resistant drill collar option
Reinforced mechanical and electronic firmware for enhanced durability
The QuikSurvey* continuous-circulation directional survey service and pumps-off surveying
Optional shock resistance feature with enhanced electronics packaging
OmniSphere SGR service
OmniSphere SGR service uses spectral gamma ray (SGR) to provide while-drilling insight into the mineral composition of formations, enabling petrophysical decisions through clay typing and lithology in complex formations—particularly where sand-shale sequences are present.
Evaluate complex lithologies in real-time
Real-time SGR eliminates missing reservoir layers in the presence of nonclay clastics or carbonates with radioactive minerals. The total gamma ray spectrum is resolved into three most common naturally occurring radioactive elements—potassium, thorium, and uranium.
Place the well accurately and geosteer in unconventional pay
With real-time identification of thorium and potassium, OmniSphere SGR service guides well-to-well correlation through clay typing in unconventional wells. Using uranium content, OmniSphere SGR service aids geosteering through the identification of organic carbon–rich zones.
Perform automated environmental corrections in real time
OmniSphere SGR service measurements are environmentally corrected for borehole size, eccentricity, mud type, and mud weight. It detects the potassium content in the mud and automatically corrects for ensuring an accurate measurements of formation potassium.
Reduce HSE risks and improve efficiency with sourceless and batteryless operation
The detector design of OmniSphere SGR service eliminates the chemical source for gain regulation. Powered by MWD tools, OmniSphere SGR service can be used in back-to-back runs, eliminating the need for changing batteries at the wellsite.
APPLICATIONS
Conventional and unconventional reservoir drilling
High-angle horizontal drilling
Clay typing and lithology
BENEFITS
Aids formation evaluation and completion decisions in real time in complex reservoirs
Enhances reservoir evaluation by correctly identifying clay volume in pay containing radioactive nonclay minerals
Guides and geosteering in unconventional pay
Saves rig time through early formation evaluation
FEATURES
Real-time uranium, thorium, potassium, total gamma ray, and uranium-free gamma ray
Total organic carbon
Automated environmental corrections in real time (for borehole potassium)
Sourceless and batteryless operations
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