BLACKSTAR ELECTROMAGNETIC MEASUREMENT WHILE DRILLING (MWD) TOOLS

Transcription

1 BLACKSTAR ELECTROMAGNETIC MEASUREMENT WHILE DRILLING (MWD) TOOLS

2 BlackStar EM MWD National Oilwell Varco is a world leader in downhole tools, services, and technology. Our state-of-the-art BlackStar ElectroMagnetic Measurement While Drilling Tools (EM MWD) system sets the standard for downhole data acquisition. Combining the latest in EM technology with the most durable and efficient design on the market, the BlackStar system provides a cost-effective solution for EM MWD applications. BlackStar EM MWD Tools MWD systems transmit data measurements from the bottom of the hole back to the surface to allow the driller to control and monitor the location and orientation of the drill bit. Traditional mudpulse MWD systems transmit information via pressure pulses in the fluid column. EM systems send information to the surface through the earth s crust utilizing low frequency electromagnetic waves. Information is received at a surface antenna, decoded, and then processed by a computer and distributed to the driller s readout display without the encumbrance of mud or wire transmission. Features The BlackStar EM MWD offers many key advantages over more traditional MWD systems. Some of these include: Key data points including: - Magnetic/gravity tool faces - Near-bit inclination - Azimuth - High-side gamma - Low-side gamma - Total gamma (directional and 360 ) - Annulus pressure - Vibration - Downhole Revolutions Per Minute (RPM) Operate in a variety of fluid conditions, including: - Aerated mud - While pumping lost circulation material Configurable to meet local field conditions Variable data transmission speeds Separate steering, survey and rotation frames Compact and battery powered Electronic design eliminates mechanical parts Does not require pump pressure or flow Data output in industry standard Wellsite Information Transfer Standard (WITS) format Can be used with a variety of tubular sizes Certified Rig Floor Display (ATEX Zone 1) wireless capable Please scan this QR code to view the BlackStar tool video. EM systems are the preferred MWD strategy in many applications, including: Underbalanced drilling Underpressured formations Vertical control drilling Horizontal drilling Contaminated mud systems Coal Bed Methane (CBM) Lost circulation Directional drilling Re-entry wells Gamma Options: The Blackstar EM MWD system provides the user with three Gamma Module options for their logging and geosteering applications; a 360 Gamma Module, a Directional Gamma Module, and a Dynamic Rotational Gamma Module. The 360 Gamma Module or omni-directional Gamma Module is the better choice for correlation logging because it offers greater sensitivity than the Directional Gamma Module and is much less susceptible to damage due to shock and vibration. The 360 Gamma Module is normally used in the vertical or build section of a well. The Directional Gamma Module contains a gamma detector mounted within a tungsten shield. The shield substantially attenuates the naturally occurring gamma radiation emitted by the surrounding formations. A 2 inch (12.7 mm) wide by 5 inch (127 mm) long slot has been cut axially into the shield, allowing the gamma rays to enter the detector with minimum attenuation through a window centered on the long axis of the gamma detector. The slot in the tungsten shield is physically aligned with the highside of the MWD tool, allowing its position relative to the gravity highside of the hole to be controlled by the directional driller. This tool configuration is then used to determine bed boundary locations by measuring the amount of naturally occurring radioactive material contained in the formations of interest. Normally, a coal seam will contain fewer of the naturally occurring radioactive elements than adjacent shale or siltstone deposits. The Dynamic Rotation Gamma Sensor (DRG) provides the ability to accurately measure the naturally occurring radioactive materials to either the high-side or the low-side of the wellbore while rotating the drill string. The DRG technology allows the driller to make a rapid determination of approaching bed boundary changes and make corrections to adjust the drilling program to stay within the desired zone. This system provides an improved method of geosteering by adding the ability to record oriented gamma measurements while the drillstring is rotating or stationary.

3 Specifications Sensor Specifications Parameter Range Resolution Accuracy Inclination ±0.2 Azimuth ±0.5 Tool Face ±1.5 Dip Angle 0 - ± ±0.2 Mag Field 0 70,000 gamma 100 ±200 High-Side Gamma 2,000 cps - window size cps ±1 max RPM 120 Low-Side Gamma 2,000 cps - window size cps ±1 max RPM 120 Gamma Ray 2,000 cps 1 cps ±1 Annular Pressure 0-15,000 psi 1 to 8 psi depending upon selected full-scale range (6.89 to kpa) 1% Selected FSR Temperature C ( F) 0.07 C (1 F) ±1.0 Total Vibration 0 30 g rms 0.01 g rms ±0.5 g rms Downhole RPM RPM 1 RPM ±.5 RPM Near-Bit Inclination and ±0.1 ±0.5 Transmitter Rotary Speed 0-99 RPM 4 RPM ±2 RPM Radial Vibration 0-30 g rms 0.01 g rms ±0.5 g rms Axial Vibration 0-30 g rms 0.01 g rms ±0.5 g rms Gap Current 60-2,000 ma 60 ma ±30 ma General Tool Specifications Length 30 9 (9.4 m) Size 1d OD (48 mm) Pressure Rating 20,000 psi (137,895 kpa) Formation Parameters Formation Resistivity 3 ohm-meters to 1,000 ohm-meters depending upon formation lithology, and borehole conditions Power Lithium Battery Operating Temperature 80 to 130 operating hours depending upon borehole conditions and transmitter power selection. Dual Battery Option available, providing up to 260 hours of operation. -20 C to +150 C EM Signal Modeling EM signal modeling program available for pre-job planning Downhole Data Storage DRG 860 hrs 1-minute intervals Gamma, Highside Gamma, Low Side Gamma, Annular Pressure, Temperature, Vibration, RPM 360 and Focus Gamma 226 hrs 1-minute intervals Gamma, Annular Pressure, Temperature, Vibration Transmitter 291 hrs 1-minute intervals Battery Voltage, Battery Current, Gap Current, Vibration (Flow switch), Active Battery Downlinking (1) Rotational Down Linking (2) Pumps On/Off cycling sequence to change tool s mode of operation Operating Specifications and Limits Data Transmission Environmental Shock Operating-1,000 g, 0.5 msec, ½ sine Type Operating Frequency Data Rates Low frequency electromagnetic waves Field programmable, 2 Hz to 12 Hz 1, 1.5, 2, 2.4, 4, 4.8, and 6 bits per Second Survival-2,000 g, 0.5 msec, ½ sine Vibration Operating: Sine Vibration 15 g peak, 50 to 800 Hz Random Vibration 10 grms maximum Transmitted Parameters Field programmable Vibration Survival: Sine Vibration 30 g peak, 50 to 800 Hz Data Update Rates 18 1 baud baud Random Vibration 20 grms maximum

4 Specifications System Size Pressure Drop at Maximum Flow Rate with 8 ppg mud (95 mm) OD X (58.7 mm) ID 180psi 160 gpm (0.60m 3 /min) (121 mm) OD X (68.3 mm) ID 76psi 370 gpm (1.40m 3 /min) (165 mm) OD X (82.6 mm) ID 39psi 700 gpm (2.65m 3 /min) (203 mm) OD X (101.6 mm) ID 21psi 1200 gpm (4.54m 3 /min) System Size Hole Size Maximum Dog Leg - Degree/100 ft (Degree/ 30m) Sliding Rotating (95 mm) to ID (121 to 149mm) (121 mm) to ID (149 to 200 mm) (165 mm) to ID (191 to 251 mm) (203 mm) to ID (251 to 311 mm) 12 7 Mud or Fluid Parameters Conventional Drilling Underbalanced/Air Drilling Mud Flow Rate: Maximum dependant on NMDC ID, Fluid velocity flowing past tool not to exceed 40 ft/sec (12 m/sec) Mud Sand Content: Maximum 0.5% for continuous operation at maximum flow rate/higher content tolerable at low flow rates Minimum fluid injection rates: 30 gpm (114 liters/min) BlackStar EM MWD Computer and Surface Amplifier Computer Requirements RAM - Minimum: 2GB RAM - Recommended: 4GB or more Hard Disk Space: 3GB or more Processor Speed: Minimum: x86 Processor: 1.0 GHz / x64 Processor: 1.4 GHz Recommended: 2.0 GHz or faster Processor Type: x64 Processor: AMD Opteron *, AMD Athlon * 64, Intel Xeon * with Intel EM64T support, Intel Pentium * IV with EM64T support x86 Processor: Pentium * III-compatible processor or faster Operating Systems: Microsoft Windows * 7 SP1 64-bit Ultimate, Microsoft Windows * 7 SP1 64-bit Enterprise Microsoft Windows * 7 SP1 64-bit Professional, Microsoft Windows Vista * SP2 64-bit Ultimate Drive: A DVD drive or CD-ROM, as appropriate, is required for installation from disc. Monitor: Super-VGA (1366 x 768) or higher resolution monitor USB Port: 2 or more USB 2.0 or higher *AMD Athlon and AMD Opteron are a trademarks of Advanced Micro Devices Inc. in the United States and other countries *Xeon and Pentium are trademarks of Intel Corporation in the United States and/or other countries *Windows is a registered trademark of Microsoft Corporation in the United States and other countries

5 At NOV, our focus is taking technology downhole. We are comitted to providing BHA solutions that are rugged and reliable, from design through repair and maintenance. Combined with our responsive customer service and support, this translates into increased BHA performance and reduced drilling costs for our clients Contact Spring Transmitter Battery Our Quality Assurance/Quality Control and product testing procedures ensure the delivery of a structurally sound and reliable tool kit for every application. Tool Gap Transmitter Contact Spring Directional Module All tools are manufactured and assembled in our state-of-the-art facility by the most experienced and knowledgeable technicians in the business. Gamma Ray Battery Manufacturing / Service The BlackStar EM MWD tool is manufactured, assembled and tested in NOV s facility in Houston, Texas. The system is carefully packed in sturdy shipping containers and ready for delivery at a moment s notice. This compact packaging allows for ease of handling and the assurance that all parts arrive in an orderly and in reliable condition. Gamma and Pressure Assembly Commitment As a worldwide leader in downhole drilling tools, NOV is dedicated to serving the oil and gas industry with quality equipment, reliable service and the most experienced and knowledgeable people in the business. Our commitment to leading edge technology, precision manufacturing and rigorous quality assurance allows us to focus on providing the most cost effective tools available, around the clock and all over the globe. Annular Pressure Port

6 Downhole Solutions Drilling Solutions Engineering and Project Management Solutions Corporate Headquarters 7909 Parkwood Circle Drive Houston, Texas United States Phone: Fax: Industrial Solutions For a complete list of NOV Downhole locations, visit us online: Lifting and Handling Solutions Production Solutions Supply Chain Solutions Tubular and Corrosion Control Solutions National Oilwell Varco has produced this brochure for general information only, and it is not intended for design purposes. Although every effort has been made to maintain the accuracy and reliability of its contents, National Oilwell Varco in no way assumes responsibility for liability for any loss, damage or injury resulting from the use of information and data herein. All applications for the material described are at the user s risk and are the user s responsibility. Well Service and Completion Solutions One Company... Unlimited Solutions downhole@nov.com National Oilwell Varco All Rights Reserved D MKT-001 Rev.08