NOV Tektonic钻头平台 量身定制 为你而来

Launched in January 2016, the Tektonic™ drill bit platform from NOV increases drilling efficiency at the cutter/rock interface, maximizing rate of penetration, stability, and cutting structure durability.

ReedHycalog™ Tektonic™ drill bit platform fuses cutting-edge bit body geometry, enhanced cutter layout coupled with superior hydraulic design methods, and the next generation of PDC mirrored cutter technology to boost drilling efficiency in your most challenging drilling environments. Offering unparalleled localized engineering support, our Regional Design Engineers (RDE) are equipped to design these bits more efficiently and provide bits specifically tailored for your application needs.

Core Components:

• Next-generation mirror finish cutter technology, Reflektor™ cutters, improve drilling proficiency with a sleek surface that reduces bit balling and increases ROP.
• Incremented cut profile along the blade creates a more efficient path for cuttings removal, and reduces the amount of energy required to fail the rock.
• Optimized blade spiral reduces localized confinement pressures at the cutter rock interaction; spirals are kept to a minimum to avoid the reduced hydraulics efficiency seen on many spiral designs.
• Cutter loading, work rates, and wear characteristics are optimized using our proprietary dynamic rotation bit modeling sofware, which accurately models eccentric bit motion conditions downhole.
• Advancements in fluid flow modeling quantify and improve hydraulic cleaning and cooling performance for all new designs, by examining cutter face fluid shear stress, cross-flow mitigation, and cuttings volume.

Tektonic™ drill bits are customized to overcome specific application requirements. Engineers formulated advanced diamond and substrate chemistries to increase thermal, abrasion, and impact resistance as a function of application demands. The polished front face of Reflektor™ cutters allows lower friction, higher rates of penetration, and lower mechanical specific energy compared to unpolished PDC cutters. This effect has been observed and quantified in multiple rock types in real-life applications. Improved numerical modeling tools and procedures are implemented into the Tektonic standard design process to enhance designs for specific applications. Cutter-rock interaction forces are now modeled based on a variety of non-symmetric rotation scenarios including bent housing motor with drill string rotation and specific rotary steerable tool systems. This process provides a cutting structure customized to specific drive system and bottom hole assembly geometries to improve force distribution, localized wear, and interaction between the bit body and complex bottom hole shapes. New computational fluid dynamics guidelines are supported through validation via pressurized drilling laboratory facilities and allow for optimized cleaning and cooling of the cutting structure without undue erosion of the bit body.

Several years of research and development led to encouraging results with initial experimental bits, and several designs were deployed to the field for final tests. The bits drilled in a variety of formations, including shales, limestone and interbedded formations in different regions and countries including USA, Oman, Iraq and China. All studied bits outperformed the competition, improving ROP by 24% to 108% compared to the offset average. A comprehensive and collaborative approach that included computer-aided simulation, PDC cutter selection, laboratory tests and field tests paved the path for these successful results. These high performance drill bits have the capacity to further reduce drilling costs for operating companies.

Case study

Tektonic™ drill bit platform breaks records in the Middle East

Operators in the Middle East have achieved record ROP’s since the launch of NOV’s new ReedHycalog™ Tektonic™ drill bits.

In Q1 2016, a major Middle East operator ran a 6 blade, 16mm cutter steel-bodied TK66 Tektonic bit fitted with Reflektor cutters to drill the 12 ¼” section. The bit successfully drilled the entire 2,480m interval in a single run through challenging limestone, dolomite, shale and highly abrasive sandstone formation, outperforming matrix bits which were standard in this section. The bit set a new field record of 23.4m/hr a 63% improvement on the field average.

In Q4 2015, a 12 ¼” TK59 Tektonic bit was run by a major operator through an extremely reactive formation in the Middle East. The bit drilled the vertical section to TD, 13% longer and 53% faster than the competition bit drilling through similar lithologies.

In Q4 2015, a major Middle East operator ran a 6-blade, 16 mm cutter matrix-bodied TK66 Tektonic bit fitted with Reflektor cutters in the 8 ⅜” section, reaching total depth after drilling 1,397 m at a rate of 11.5 m/h. The bit achieved 11% faster ROP than the best offset and was graded 1-1-WT-A-X-I-NO-TD.

Tektonic TK76 Drill Bits Go the Distance in Delaware Basin

Tektonic™ TK76 bits from NOV have contributed to two recent record runs in Lea County, New Mexico, helping operators achieve the fastest 9.875 in. runs over 7,000 ft in the Delaware Basin.

In Q2 2016, an operator used the 9.876 in. TK76 bit with Permian Series cutters to drill the vertical section of a well in Lea County. The bit drilled 7,731 ft in 43.5 hours for an average ROP of 177.7 ft. This run increased ROP by 97% over the Delaware Basin average.

The following quarter, an operator used the same bit to drill an interval of 7,032 ft in 37.5 hours for an average ROP of 187.5 ft/hr. This was the fastest recorded ROP for the Delaware Basin on runs exceeding 7,000 ft. The bit increased ROP by 104% over the Delaware Basin average and 32% over the top ten performers.