Geolink

From Aberdeen, Scotland, Geolink (UK) Ltd has manufactured Orienteer MWD (Measurement While Drilling) systems for sale worldwide since 1990. Geolink Manufacturing and Customer Support work side by side to bring high quality products and support to customers worldwide.

The main design criteria of any Geolink product are:
• Reliability and accuracy
• Simplicity in form and design
• Ease of operation and maintenance
• Planned upgrade path for expansion options
• Wide operational envelope

The Orienteer System Features:
• A single tool can be used in all BHA sizes from the very largest down to 4-3/4" OD.
• Simple upgrades enable the same tool string to be attached to special transmitters for use in 3-1/2", 3-1/8" and 2-7/8" assemblies.
• Gamma Ray logging (real time and memory) is a simple plug in option.
• Non-specialists with the appropriate training can operate the system.
• The short tool length creates minimum restriction in the drilling string.
• The system is small and compact with all critical tool components being helicopter transportable.
• The system is very easy to assemble and test under wellsite conditions.

Directional Survey System
The Orienteer Directional Survey Electronics Assembly contains industry standard triaxial magnetometers and inclinometers and control electronics, which allow full directional survey and steering operations over the complete inclination, range of 0-180º. The tool is programmable both on surface and downhole in order to provide the following features:

• Full directional survey capability.
• Transmission of survey quality parameters.
• Choice of either standard or fast tool face updates.
• Automatic switching between magnetic and gravity tool face updates. The tool is set to convert from magnetic to gravity tool face updates when the well inclination exceeds the default value of 3º.

Gamma Ray Logging System
The downhole gamma tool is attached to the standard directional tool string below the Survey Electronic Assembly and is available in two types:

• Standard Gamma Tool: This tool is able to log gamma ray information in both real time and memory (at 16 second intervals) for in excess of 200 drilling hours.
• High Memory Gamma Tool: This tool is able to log gamma ray information in both real time and memory (at 8 second intervals) for in excess of 400 drilling hours.

Orienteer 3.5" Option Ultra-Slim System
• The Orienteer 3.5" Ultra-Slim Directional/Gamma system has been developed to meet the demands of the expanding slim-hole drilling sector.

Orienteer Ultra-Lite Tool (2-7/8" & 3-1/8") System Features:
• Dimensions: 2.88"OD x 2.2"ID and 3.125"OD x 2.5"ID
• 1 toolstring for both ODs
• Very low power consumption
• Directional and Gamma Ray Sensors
• Short Radius capability of 1.0º/ft sliding and 0.5º/ft. rotating
• Innovative thread design
• DP of 350-3000 psi (24-207 bar)
• Coiled tubing drilling use
• Proven sensors and batteries
• Modular construction
• Short overall tool length
• The transmitter design allows field servicing for quick turn-around

Orienteer MWD Systems Retrievable Option
• Entire tool retrievable down to 4-3/4" OD according to Jar ID
• Tool sizes 4-3/4"OD to 9-1/2" OD (3-1/2" and 2-7/8" future upgrades)
• Low power consumption, proven technology, high reliability
• Directional and Gamma Ray measurements are available
• Short Radius capability of 1.0º/foot
• Modular construction
• Compatible with standard Surface System
• Short overall tool length
• Pulser System compatible with existing Orienteer tool String

Resistivity
Trim Formation Resistivity Tool
• Deep Formation resistivity measurement; depth of investigation equivalent to wireline Deep Induction
• Bed resolution equivalent to wireline Medium Induction or better
• Ideally suited to Geo-steering applications
• Easy to operate, simple to maintain