Tool Configuration

Complete MWD tool with Gamma Detector is fully retrievable and replaceable via wireline. Pulser is located on lower end of tool and fits into special muleshoe/orientation sub. Remainder of tool is centered in standard nonmagnetic drill collar (NMDC). Flow rates allowable are based on collar inside diameter. Downhole tool life can be extended with use of optional dual batter package.

Downhole tool assembly - top to bottom consist of:	Surface computer/decode equipment is compact, easily installed and consists of:
Fishing Head Interconnect/Centralizer Battery Package (primary) Interconnect/Centralizer Batter Package (optional) Interconnect/Centralizer Orientation Module/microprocessor Interconnect/Centralizer Gamma Ray Detector (optional) Interconnect/Centralizer Pulser Driver	Driller's remote terminal w/ decoding processor Safe area power supply Depth tracking data box (optional) Laptop computer Dot matrix printer Thermal printer (optional) Standpipe pressure transducer Depth encoder (optional) Hookload sensor (optional) Cables