Halliburton Energy Services has announced the global commercialization of its Energy Balanced Series of roller cone bits, which centers on three patented technologies: dynamic balancing, cutter orientation, and an anti-tracking feature. This product line has been developed to reduce well operators' drilling costs through the use of proprietary software that optimizes roller cone bit design to improve drilling performance and reduce vibration as the bit's cutting structure contacts the formation. "While it is the challenge for any bit designer to develop a roller cone bit which can increase its ROP and cutting structure life, Halliburton's mathematical approach to cutting structure improvement clearly differentiates us from the competition," said Randy Young, vice president, Halliburton Energy Services, Security DBS. "We believe the Energy Balanced Series' patented designs will deliver additional value to our customers through enhanced rate of penetration and longer bit life." Halliburton's Security DBS product service line has adapted balancing technology, originally introduced to improve PDC bit reliability, to enhance roller cone bit performance. This patented technology (U.S. patent 6,213,225) is designed to achieve a near balance condition of the three cones. The bit is said to be volume balanced when each of the three cones remove a similar volume of formation and force balanced when the forces applied to each of the three cones is near-equal. Bits from the Energy Balanced Series also use a patented cutter positioning algorithm (U.S. patent 6,095,262) to optimally position and orient cutters to improve drilling rates and reduce the risk of damage to the bit cutting structure. Security DBS' Computer Drilling Simulator calculates the direction that the cutter scrapes when it contacts formation. The bit designer then orients the cutter (whether tooth or insert) perpendicular to the direction of this scraping direction, to maximize penetration rate and minimize the wear to the cutter. The Energy Balanced Series bits may also incorporate an anti-tracking feature. Tracking is a phenomenon where cutting elements mesh with existing craters, causing low penetration rates and in some cases cone shell erosion. Security DBS can offset adjacent cutter crest angles by 10-15 percent to break up craters. This patented technology (patent pending) is optional and is intended for those drilling applications where tracking has shown to be detrimental to bit performance. The use of these three technologies allows bits to drill faster and further, at lower vibration levels, resulting in reduced drilling costs for our customers.
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