SYSTEM DESIGNGyrodata’s rate-gyroscopic systemsrepresent a major advancement indirectional surveying—meeting today’srequirement for more precise well-bore positioning and reservoir delin-eation. Incorporating the latest aero-space guidance technology providesapproximately ten times the accuracyof conventional surveying methods.

FEATURES■ Inertial grade sensors and onsite

quality assurance provide thehighest proven survey accuracyavailable.

■ Downhole probes 1.75-3.6” in O.D.provide versatility to run in all pipesizes, temperatures and pressures.

■ Unique temperature modelingallows the highest heat resistanceversus time in the industry.

■ All-angle operation, pump downcapability and continuoussurveying allow opera-tions in the most difficulthigh angle wells tohorizontal.

■ One basic system per-forms multiple applica-tions for optimumversatility and economics.

Rate-Gyroscopic Wellbore Surveying

Advanced gyroscopic survey systems employing state-of-the-art

aerospace guidance sensors for a major increase in precision.

SPECIFICATIONS■ 1.75-inch diameter downhole probe–300°F (150°C); 10,000 psi■ 1.80-inch diameter downhole probe–300°F (150°C); 15,000 psi■ 2.25-inch diameter downhole probe–190°F (87°C); 5,000 psi■ 2.5-inch diameter downhole probe–190°F (87°C); 15,000 psi■ 3-inch diameter heatshield probe–320°F (160°C); 15,000 psi■ 3.5-inch diameter heatshield probe–320°F (160°C); 15,000 psi■ 3.6-inch diameter high pressure probe–500°F (260°C); 20,000 psi■ Transportable by auto, boat, plane or helicopter■ Readings: azimuth, inclination, tool face, measured and vertical

depth, wellbore temperature

APPLICATIONS■ Single/multishot surveys in drillpipe, casing, tubing,

open hole■ Orientation/steering of directional drilling assemblies,

whipstocks, packers, perforating guns, logging tools■ Wellhead/template orientation, leveling

■ Tri-axis geophone orientation in borehole seismicoperations

■ Tandem operation with logging tools, casingcollar locators for added correlation and

rigtime savings

RGS™: Rate-Gyro Surveyor, a trademark of Gyrodata Inc.,has the following run configurations for casing, drillpipe/tubing and open hole surveys:

• RGS-WL: Wireline • RGS-CT: Continuous• RGS-BT: Battery Powered • RGS-DP: Drop Battery• RGS-OR: Orientation • RGS-ST: Steering• RGS-TD: Tandem Operation • RGS-HT: High Heat

Running gear: Centralizers, decentralizers, high-anglerollers, shock sub, muleshoe stinger, heatshield.

DECENTRALIZEDCASINGSURVEYOR

DRILLPIPETUBINGSURVEYOR

MULESHOE

STINGER

SYSTEM DESIGNGyrodata’s GEMS survey systemprovides a vast improvement in theaccuracy and reliability of magneticsurvey instrumentation by employ-ing the latest technology, including:■ Tri-axial magnetic and gravity

force-field sensors.■ Solid-state electronic data acquisi-

tion and processing.■ Special data verification and

performance modeling proceduresand techniques.

GEMS consists of a downhole sensorand electronics package, powered bya battery pack in the single or multi-shot mode, or electric wireline forsteering tool operation. Data is down-loaded at surface to a laptop comput-er, or read real-time with a Driller’sConsole during steering.

FEATURES■ Saves time and eliminates reliability

problems of film-based mechanicalsystems.

■ Provides continuous orientation ofcore barrels without stops to takedata.

■ Provides real-time reliable outputat surface with a Driller’s Console insteering operations.

■ Steering operation with a wirelinewet-connect eliminates side-entry subs.

■ Provides short-radius horizontalguidance with gamma logging andpressure detection.

■ Provides reliable guidance inair/underbalanced drilling andmud-loss situations.

SPECIFICATIONS■ Single/multishot probe:

1.75” O.D.x 8´ long■ Standard magnetic single/multishot

running gear■ Pressure rating: 20,000 psi■ Temperature: 300°F/150°C■ 2.125-inch dia. heatshield probe—

500°F/260°C■ Memory storage; 1020 survey records■ Readings: inclination, azimuth,

toolface, magnetic field strength,dip angle, gravity field strength,temperature

■ Resolution: azimuth, inclination,toolface - 0.01°

■ Programmable delay: 1-530 minutes■ Programmable shot—

interval setting: 5 sec-530 minutes■ Steering probe: 1.75” OD x 76” long■ Gamma probe: 1.75” OD x 27” long■ Pressure section: 1.75” OD x 37” long

APPLICATIONS■ Singleshot surveys in drillstring■ Multishot surveys in drillstring■ Wireline steering tool operation■ Horizontal drilling guidance with

optional gamma/pressure detection■ Continuous core orientation■ Coiled tubing guidance.

CORPORATIONGyrodata was found-ed in 1980 withfunding from severalmajor oil companiesto adapt modernaerospace guidancesystems for applica-tions in wellbore sur-veying. The companyaccomplished that challenge provid-ing the industry with the mostadvanced precision instrumentationavailable. Since that time, Gyrodatahas expanded worldwide offering avariety of high-technology productsand services.Corporate headquarters in Houston,Texas and Aberdeen, Scotland containhighly sophisticated research, devel-opment, and manufacturing facilitiesfor state-of-the-art electronics andnavigation instrumentation. Gyrodatahas an ongoing commitment toimprove and expand its products andservices with specialized design andinnovation. For more information,please call one of the centers listedbelow.

www.gyrodata.com

Electronic Magnetic Survey Systems

Fully electronic magnetic systems offering enhanced accuracy, speedand reliability – plus all-angle operation for single/multishot surveysand steering tool/logging operations.

Headquarters1682 W. Sam Houston Pkwy,N.Houston, Texas 77043Phone: 713/461-3146Fax: 713/461-0920

Campus Three-AberdeenScience & Technology ParkBalgownie Drive, Bridge of DonAberdeen, Scotland,UK AB22 8GWPhone: 44-1224-823060Fax: 44-1224-826021

Regional OfficesNew Orleans, LATel. 504-394-3853Lafayette, LATel. 318-981-4436Anchorage, AlaskaTel: 907-522-5972Midland, TexasTel: 915-561-8458CanadaCalgary, AlbertaTel: 403-640-7755

MexicoCd. Del Carmen, CampecheTel/Fax: 52-938-24321, 90807TrinidadMarabelle, TrinidadTel: 809-653-4431Fax: 809-632-3863VenezuelaAnaco, Edo. Anzoategui VenezuelaTel/Fax: 58-82-242394, 242145, 242902Cuidad Ojeda, VenezuelaTel: 58-65-22649, 22744, 24703Fax: 58-65-27731

ArgentinaNeuquen, ArgentinaTel: 54-299-4430031BoliviaSanta Cruz, BoliviaTel: 591-3-536262EcuadorQuito, EcuadorTel: 593-2-431-222NorwayBergen, NorwayTel: 4755-984030Fax: 4755-984031

NetherlandsTel: (31) 251-226715AustraliaPerth, AustraliaTel: 619-3850162Fax: 619-3851620Middle EastAbuDhabi, United Arab EmiratesTel: 971-0-2546282Fax: 971-0-2546268

SERVICE CENTER LOCATIONS