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[email protected] nov.com ©2016 National Oilwell Varco. All rights reserved. NOV-DDS-F-1362-001 Save rig time using electromagnetic telemetry to transmit data measurements, even while making a connection The BlackStar™ II electromagnetic (EM) MWD tool is the latest advancement in NOV’s BlackStar EM MWD system. Using lessons learned from more than 10 years of drilling oper- ations, the system has been reconceived to further enhance functionality and cost-effec- tiveness. The BlackStar II EM MWD tool uses the most advanced and up-to-date electronics and adds additional measurement capabilities to deliver increased performance. EM systems send information to the surface through the earth’s crust, utilizing low-fre- quency EM waves. Information is received at a surface antenna, decoded and processed by a computer, and distributed to the driller’s readout display without the encumbrance of mud or wire transmission. EM tools have no moving parts, allowing for use in air-drill- ing conditions or high lost-circulation material environments where mud-pulse tools are rendered inoperable. Our BlackStar II EM MWD tool transmits data measurements from the bottom of the hole back to the surface, allowing the driller to control and monitor the location and orientation of the drill bit. Surveys can be transmitted during connections, minimizing the nonproduc- tive time associated with conventional mud-pulse tools. EM systems are the preferred MWD strategy in many applications, including: • Underbalanced drilling • Underpressured formations • Vertical control drilling • Coalbed methane (CBM) • Lost circulation Features and Benefits Multiple downlinking options • EM downlinking • Conventional RPM mode Diverse power management capabilities • Enables increased power output (up to 40 watts) • Offers the ability to shut down the transmitter while rotating • Allows modules to operate from a single 28 V battery stack • Provides dual battery support User-configurable options • Offers multiple user-programmable frames: survey, steering, and rotation • Allows for multiple open-circuit voltages in step increments • Enables additional measurement channels: axial, radial, and total vibration Gamma and pressure modules • Integration of gamma (360° and DRG) module, with optional annular and internal pressure Onboard memory logging • Directional module – surveys stored in memory • Gamma module – gamma ray stored in memory BlackStar II EM MWD Tool To learn how our BlackStar II EM MWD tool can help you obtain fast and accurate downhole measurements, contact your local NOV representative or visit us online at www.nov.com.
