Unlike fixed blade stabilisers, the Roller Reamer causes less hole wall damage. The stepped profile only opens the hole to the Reamer's dressed diameter and removes ledges and mini doglegs from the borehole. The smoother wall profile significantly aids the drilling, logging, coring, and casing running processes. The combined features of the Roller Reamer reduce risk throughout the drilling process.
Featuring a pressure equalised lubricated bearing system, the cutters ensure effective operation in high pressure, down hole environments. The cutters' seals prevent mud and cuttings from entering the bearings while retaining lubricant within the bearing faces meaning additional attainable revolutions.
Improved Bit Weight Transfer Assists
By improving the bit weight transfer, together with torque reduction and stick slip increases the constant energy available at the bit – the weight ratio factor. Removing the peaks from the constant energy adds life to tri cone bit bearings and reduces PDC cutter/TCI tooth breakage. As Stick slip release can result in high string RPM, reducing the spikes decreases incidents of cutter face damage and drill bit reverse rotation.
Reduce Trip Times Through Tight Sections and Ledge Removal
By removing tight sections and ledges in the reamed hole, the trip times in and out of the hole are significantly reduced. Patented bi-directional and back reaming cutters facilitate the reaming through tight spots when tripping out of the hole. Typically, this can be done only where rigs are equipped with top drive equipment. Improved borehole profile also reduces the frequency of stuck pipe incidents and thereby fishing operations.
Simple Access Through Ledge Removal
The removal of ledges assists wire line logging tools and casing/liner down hole, significantly reducing running times and instances of getting stuck. With LWD tools, stick slip vibration reduction allows noise reduction and improved MTBF.
Reduction of Stick Slip
Torque can be detrimental to quality core collection. The reduction of stick slip allows more constant barrel rotation and reduced vibrations increasing coring performance.
Optimised Cutting Action
The hard formation cutter profile optimises the cutting action for the opening of under gauge hole and the removal of stringers and ledges typically created by direction change in the borehole.
Roller Stabilisation
The stabilisers allow longer reamers with full gauge hole wall contact. Under gauge rollers to simulate fixed blade stabiliser dimensions are also available. A maintenance manual is included with each set of cutters. This manual gives full details on changing the cutter cartridges.
Vigor's Roller Reamer is an efficient bottom-hole assembly reaming and torque-reducing tool. It provides reaming action for improving borehole shape size and quality. It also provides stabilization action by centralizing the BHA, minimizing down-hole vibrations preventing the BHA from resting on the low side of the deviated hole, and minimizing BHA fatigue. Torque reduction results from touching the formation with a set of rollers spinning around their axes as a result of the rotation of the central body.
Please feel free to contact us if you have any questions or would like to learn more about Vigor's downhole drilling and completion logging tools. We are always happy to hear from you. For more information, you can write to our mailbox info@vigorpetroleum.com & mail@vigorpetroleum.com
