March 2010 – Wheeler County Texas

 

Text Box: Explosion Eminent (In a Good Way) – Great White Pressure Control’s new 1-3/4” E-coil string is pictured left rigging up a five stage, multi shot perforating gun. Today, more and more wells are being drilled in the horizontal. To perforate these wells, the shots must be ran in on coiled tubing in order to get the gun through the curve and out to the pay zone. This particular well had a kick off point near 14,000 feet and ran in the horizontal to total depth. Great White Pressure Control ran the guns to a depth of 20,200 feet where the first of four perforations were shot. The coiled tubing was pulled up and the second perforation was shot. They continued to pull and shot through the four required stages. The well was logged as the tubing was pulled out with a CCL/gamma logger. Engineers on site and experienced operators had a good feeling after each shot. The noticeable change in circulating pressure inside the coiled tubing unit was a good sign the casing had been shot through cleanly.

 

Text Box: Even with a rig up of over 50 feet and a brand new E-Coil head, the experience and training Great White Pressure Control provides paid off. After the guns were pulled out and inspected, the four shots fire went off perfectly. A compliment from the customer noting quicker rig up time compared to competitors was the icing on the cake for this job and a great start to a new service line – Great White Pressure Control E-Coil. Pictured right is the perforating gun after it was pulled from the well showing the fired shots.   

 

November 2009 – Near Geary, OK

 

 Text Box: An Old Well Goes Down Fighting – This was the case in mid-November when Great White Well Control was called upon to assist with a troubled well. The well was old. It was discovered to be bridged off while running wireline and attempting to clean out the well with coil tubing. While pumping fluids down hole, the well started to return fluids and gas outside of the tubing and casing strings washing around the well head as picture at left. It was decided the best option was to P&A (plug and abandon) the well. However, due to the breech in the tubing and/or .

Text Box: casing, the well needed to be diagnosed for possible leaks or charged zones. This is where Great White Well Control came into the picture. In order to diagnose where the breech(s) were, the well would need to be pressurized with fluids. This option could possibly cause another blowout around the casing. In an attempt to control the possible blowout, Great White Well Control installed a 20” diversion line fabricated by the Great White Pressure Control manufacturing facility in Oklahoma City. The line was buried several feet down next to the casing and out to a safe point on location to vent the gas and fluids if necessary. Pumping mud down hole did, as expected, create flow from around the casing, venting gas and mud. While Great White Well Control did monitor the situation, and manned 2,000 GPM fire suppression pumps and lines, the diversion line did its job. The mud and gas was vented safely. With the assistance of the well control specialist, pumping continued in an attempt to circulate out any remaining gas, while calculating a possible position of the breech. The pumping was successful and the estimated breech location was determined. The well was now able to be properly cemented in, and the well head removed at the customer’s discretion.  

     Text Box: Pictured far left is the installation of the 20” diversion line. The next photo shows the diversion line working as designed, flowing the mud and gas in a safe location while stopping it from washing around the well head at surface.

 

 

July 2009 – Northeast British Columbia, Canada

 

could be removed. While the tree was off, special service personnel removed the tool string and made up a short pup joint above what was left. This allowed for a BOP stack to be stripped on and locked on the pup joint. The pup and the remaining tools could then be snubbed out once the master valve thawed.

 
 

 
  

 

 

 

    

 

 

 

May 2009 – Oklahoma City, OK – Manufacturing Facility

 

 

 

 

April 2008 – Sylvan Lake, Alberta, Canada

 

    

 

 

December 2007 - Calgary, Alberta Canada

 

          

 

July 2007 – Near Watonga, OK

 

    

 

Text Box: Great White Pressure Control President, Ronnie Roles, rolls up his sleeves. The founders of the company believe in being out, teaching, and training, utilizing their decades of experience to help build a truly sound, knowledgeable company.