Summer 2008
PropTrac H Case History

Specialty Wood JournalA Rocky Mountain operator was looking for a way to confirm the propped fracture height in their wells to help them improve their fracturing strategy. They were sensitive to the environmental concerns held by the public in the area along with the regulatory restrictions and political issues that come with pumping in the Rocky Mountains. The use of radioactive materials was prohibited, so the usual methods were not an option.

A three stage fracturing treatment was performed on a well. All three stages were treated with a 25# crosslinked fluid system at a maximum sand concentration of 4 PPG. The lower stage (shown in the accompanying log) perforations were from 9,365 feet to 9,563 feet. This stage utilized 81,000 lbs of 20/40 white sand followed by 40,000 lbs of PropTracSM PR6000 PT 20/40.

Hexion’s new advanced PropTrac analysis was performed. Data from the open hole and cased hole GR logs was utilized in combination with a production log survey. Data comparing proppant placement and water/gas production showed higher gas production at 9,365 feet (20.7%) and 9,484 feet (10.8%). Also, the shale below the 9,563 foot interval showed limited downward fracture growth.


The operator utilized the new PropTrac advanced analysis with a production log survey to improve perforating and fracturing design on the offset well. They used the data to optimize gas production and minimize water production which increased their revenue.

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