As part of WWT’s commitment to providing superior services, we provide a comprehensive and complimentary well analysis to recognize adverse wellbore conditions and offer solutions with an NRP placement recommendation. Client-provided well data is maintained in a confidential manner. WWT’s engineers analyze the anticipated downhole side forces to offer a placement recommendation based on the areas of the wellbore where critical contact forces are calculated, and plot predicted torque and drag with versus without NRPs for benefit comparison. Typically, our placement recommendation allows the full objectives of our clients to be achieved by identifying and providing protection for only the most problematic areas in the well

In addition to torque & drag modeling, WWT offers other analytical services, including incremental ECD due to NRPs, and casing wear modeling

Contact WWT to discuss your application further. Download and complete WWT’s well data sheet, which details the information required for a complimentary analysis

WWT Non-Rotating Protectors™ OD is larger than a tool joint, thereby preventing casing wear and heat checking by isolating contact between the tool joint and casing. Without NRPs deployed, rotating tool joints risk severely wearing the casing, resulting in damage, expensive repairs, tiebacks, and downtime. Installing WWT NRPs on each joint of pipe in the high contact areas of the wellbore provides optimal casing protection for every hole section where applied

WWT Non-Rotating Protectors™ reduce rotational friction between the drill string and casing by creating a standoff between the two surfaces. The unique, patented inner sleeve geometry allows the drilling fluid to flow through the annulus into the interior of the sleeve. Rotation of the drill pipe draws fluid across the sleeve flats, creating a hydrodynamic fluid bearing within the stationary non-rotating sleeve, reducing rotating friction up to 90% even at low RPMs and in almost any drilling or completion fluid. The result is that string torque is significantly reduced, allowing more energy transfer to the bit, thereby improving drilling performance

WWT Super Slider Protectors™ (Model SS and SS3) feature low-friction materials on the OD to reduce sliding friction “drag” between the drill string and casing. The sleeve slides easily along the casing while the drill pipe rotates within the sleeve, isolated from contact with the casing. As a result, slack-off weight is increased, while pick-up weight is decreased at the surface

WWT Non-Rotating Protectors are proven to reduce drill string buckling by reducing the effective column length of the drill pipe, while at the same time reducing sliding friction. Finite element analysis and field experience have shown that reducing the unsupported length by placing a WWT NRP mid-span in the middle of each joint can mitigate parasitic effects of buckling such as increased torque, drag, vibration, and drill string lockup, resulting in efficient weight transfer to the bit

WWT Non-Rotating Protectors™ are ideal for riser, wellhead, and lower marine riser package (LMRP) protection in deepwater operations. WWT NRPs are proven to extend the operating window in adverse ocean currents. Operators have been able to continue drilling operations when they would have been otherwise shut down waiting for currents to subside. The WWT NRP provides adequate standoff between the drill string and the riser, flex joint, wellhead, and blowout preventer, thereby preventing wear and damage

WWT Non-Rotating Protectors™ are a clamp-on tool designed and installed directly onto the joint of drill pipe, offering greater placement flexibility. Unlike sub-type protectors, there are no additional drill pipe connections or added stand length that inhibits derrick racking capacity. In addition, NRPs add negligible weight to the drill string versus heavy sub-type protectors. Deployment is simple, and each NRP can be installed in just over one minute. Once NRPs are installed, there is no need to remove and store NRPs each time you pull out of a hole. Simply manipulate the protected joints of the drill pipe to maintain continued placement in the critical zones of the well. WWT’s qualified Field Application Specialist manages the installation, trip inspections, placement depths, and removal of NRPs

WWT Non-Rotating Protectors™ have been tested and qualified with many rotating control devices (RCDs) for Managed Pressure Drilling (MPD) applications. Likewise, NRPs have been tested and stripped through closed BOP annular. WWT offers customized solutions such as reduced max OD of NRPs or modifications to the collar configuration to ensure compatibility for each RCD. Contact us to discuss more

Each NRP assembly consists of a hinged elastomer or low-friction polymer non-rotating sleeve bonded to an internal metal reinforcement cage. One hinged aluminum "collar" acting as a thrust bearing is installed on each side of the sleeve, inverted with respect to the other. The collars generally consist of 3 to 6 bolts each depending on the model and torqued to specification using a calibrated torque wrench. Each NRP can be installed in just over one minute, watch our installation video for more details