Geometrix™ 4D Shaped Cutters a new line of PDC cutters
Halliburton has announced the release of Geometrix 4D Shaped Cutters, a line of four distinct geometric profiles to help improve cutting efficiency and increase control to reduce drilling costs. Halliburton now offers the largest portfolio of shaped cutters in the oil and gas industry.
As industry standards lag behind the requirements of the market, end users and operators continue to push the boundaries of existing technology. Particularly the offshore oil and gas production industry, which must balance valve performance, space, weight, operability and maintenance, is pushing existing technology to its limit. Each new offshore development must contend with increasingly complex challenges such as higher pressures and higher content of H2S, CO2, sand or water.
Conventional ball valve solutions have sacrificed longevity for the sake of space and weight or have chosen leakage performance consideration over everything else. In an industry first, Cameron, a Schlumberger company, engineered a ball valve for both with an integrated seat technology.
“The launch of Geometrix cutters demonstrates our ability to collaborate with customers and translate knowledge into solutions that can help lower drilling costs,” said Scott Regimbald, V.P. of the Halliburton Drill Bits and Services business. “Each cutter is tailored for specific applications so operators now have the most complete portfolio to meet their drilling challenges.”
The family of geometrically shaped PDC cutters currently comes in four types，, described below..
Chisel™ Plowed Scribe Cutter
The Chisel Plowed Scribe Cutter utilizes a three dimensional pointed geometry to efficiently pre-fracture rock while also reducing friction from the chips flowing over the surface of the cutter. The reduced friction from chip flow allows more efficient drilling and less heat buildup at the cutter tip thus drilling faster with less wear and thermal degradation of the diamond.
Chopper™ Plowed Cylinder Cutter
The Chopper Plowed Chip Breaking Cutter utilizes a ridged diamond table surface to reduce friction from the chips flowing over the surface of the cutter. The reduced friction from chip flow allows more efficient drilling and less heat buildup at the cutter tip thus drilling faster with less wear and thermal degradation of the diamond.
Dagger™ Multi-Plowed Cutter
The Dagger Multi-Plowed Cutter utilizes several ridges on the cutter face to create a fluid boundary layer between the cutter and ribbon/chip reducing friction for more efficient chip evacuation. The ridges also increase the surface area of the cutter to help with thermal dissipation. The changed surface pattern allows for more efficient drilling and less heat buildup at the cutter tip thus drilling faster with less wear and thermal degradation of the diamond.
Machete™ Full Cylinder Scribe Cutter
The Machete Full Cylinder Scribe Cutter is a reconfiguration of the traditional Scribe cutter which helps to pre-fracture rock through point loading. The new geometry allows for thermal stability through the manufacturing process to retain a sharper point throughout the drilling process. The change offers less heat buildup at the cutter tip thus drilling faster with less wear and thermal degradation of the diamond.
Benefits
The combination of Halliburton’s bit design and application expertise has gone into creating this series of shaped cutters to deliver the highest performance possible. With different shapes for different purposes, each cutter ultimately delivers the same high-performance benefits:
Reduced friction from chip flow
Less heat buildup at the cutter tip
Faster drilling, with improved rate of penetration (ROP)
Minimal wear and degradation of the diamond
Improve drilling efficiency and lower drilling costs
Today’s drilling challenges call for innovative, precise cutting tools that save time and money at the wellsite. Geometrix™ 4D Shaped Cutters are designed to provide more efficient drilling by mitigating chip flow, friction, and thermal degradation issues. An assortment of unique geometries, added to the traditional cylinder cutter, supports the growing need for drill bit Design at the Customer Interface (DatCI) in specific applications, including the most demanding directional drilling projects.
Choose the right cutter for the right job
The Geometrix4D Shaped Cutters line of PDC cutters offer unique geometries to traditional cylinder cutter to help instigate more efficient drilling. The various shapes in this offering are customized to different application to better solve for things like chip flow, friction, and thermal degradation. This is one more way that Design at the Customer Interface (DatCI) is helping to bring custom solutions to specific applications around the World in an effort to reduce drilling costs.
In a recent offshore job in Mexico, where an operator was drilling a limestone-shale formation, the Geometrix bit doubled the rate of penetration over a 700-m section saving the operator three days of drilling time compared to offset wells.
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