WorldWide Drilling Resource

21 OCTOBER 2022 WorldWide Drilling Resource® Time for a Little Fun! Place the four-letter word of four of the images into the grid in the horizontal boxes from left to right. The fifth image’s name will read in the boldly marked diagonal spaces from top left to bottom right. Win a prize! Send completed puzzle to: WWDR PO Box 660 Bonifay, FL 32425 fax: 850-547-0329 or e-mail: michele@ September Puzzle Solution: DO NOT BURN BRIDGES ON THE ROAD TO SUCCESS Bore-Wrap®: An Added Layer of Protection for HDD Weld Joints Adapted from Information by Denso® As is common practice these days, a road crossing for a new 18-inch pipeline was being installed by horizontal directional drilling (HDD). It was approximately 1000 feet long and took place beneath a major road in the Houston Metropolitan area. Using an abundance of caution, the pipeline operator specified weld joints be protected by a fiber-reinforced abrasion-resistant overlay coating system. The contractor was using Denso Protal 7200TM as the anticorrosion coating on the field joint and chose to use Bore-Wrap, the complementary product also made by Denso. Bore-Wrap was applied to each field joint area to protect the coating over the elevated profile as the pipe was dragged in. The contractor performed pipe stringing and coating over a span of three days and pulled the pipe in on the fourth day. The project was going as planned until the point when pipe was being lifted into position for pullback to begin. Unfortunately, during the lifting process one of the pipe rollers could not handle the load shifting and forced the pipe over the edge of the roller. Although this happens from time to time, it can be frustrating because it typically causes damage to anticorrosion coating and sometimes even gouges the steel pipe which requires a cut out or repair. In this instance, it happened to occur as the Bore-Wrap was just above the roller. When the pipe dropped, Bore-Wrap took the initial impact from hitting the bearing, and as the load continued to roll, the bearing housing broke while struggling to pass through the Bore-Wrap. Once the pipe had stopped shifting and was safe to inspect, the contractor found the Bore-Wrap had absorbed all of the damage and none of the joint coating was harmed. Both the point of impact and the gouge from the point of the bearing breakage had failed to penetrate Bore-Wrap. The contractor was able to lift the pipe and proceed installation as planned without any further repair or mitigation needed. Upon completion of the installation, the first joint of pipe was pulled out and inspected. Bore-Wrap had protected the coating on the joint and exited the borehole with very little sign of wear. The circumstances of this HDD pull showed the product’s successful performance in terms of impact, gouge, abrasion, and flexibility. Bore-Wrap was applied over Denso Protal 7200 to help protect weld joints. The first weld joint after exiting the borehole. Bore-Wrap protected the underlying coating after bearing failure. DIR