Resistance Array Tool

Resistance Array Tool (RAT)

Production logging in horizontal wells

The Resistance Array Tool (RAT) is a 12-sensor fluid identification tool determining water hold-up across the wellbore. Water is conductive, whereas hydrocarbons (oil and gas) are nonconductive. Each sensor measures the resistance of the fluid between probes at their tips.

Key Features

• Differentiates between water and hydrocarbons
• Cross-sectional water hold-up profile
• Identification of water entry points
• Water hold-up profile in any fluid regime
• Can detect very small and fast moving bubbles
• Independent of well deviation
• Internal orientation sensor
• Combinable with other GE Ultrawire™ tools
• Memory or surface read-out operation