Schlumberger, Partner Complete Largest Bakken Monitoring Effort

By The Bakken magazine staff | February 10, 2014

Two of the Bakken’s biggest name companies have teamed up on the industry’s largest downhole microseismic monitoring operation ever, according to Schlumberger, the global energy services provider. The company provided a brief summary of its work with Continental Resources in its fourth quarter earnings update. Schlumberger worked with Continental Resources on the project. Deploying a combination of monitoring tools and techniques to acquire downhole data related to hydraulic fracturing growth and optimum well spacing in three of Continental’s Bakken and Three Forks wells. 

Schlumberger used three wireline versatile seismic imager receiver arrays in combination with its trademarked TuffTRAC cased hole services technology. The versatile seismic imaging was able to acquire data more than 3,000 feet from the location of the microseismic events, the company said. The operation was completed in 63 days and included 293 fracturing stages, in which the wireline monitoring services gathered information on over 300,000 lateral feet.

The TuffTRAC technology allows Schlumberger to acquire downhole data in cased wells using a wireline deployment system instead of housing the monitoring instrumentation on drill pipe or coiled tubing. The TuffTRAC technology utilizes electromechanically driven wheels that are deployed from the downhole tool’s main body. The wheels are able to move the tool down and through the wellbore in vertical and horizontal sections. Radial arms connected to the wheels are extended from the main body, and if the wheels begin to slip on the surface of the casing resulting in traction loss, the TuffTRAC system can increase the radial arm tension to decrease the amount of wheel slippage. The system can also move forward and backwards.