China 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.
The Roller Reamer is consisting of a body, cutter, bearing pin, upper block, lower block, secondary lock block, saver washer, cross pin, washer, and lock bolt. The body of the Rotary reamer is made of high-quality alloy steel and heated up to the Brinell hardness 285~341, and the minimum impact strength is up to 54 J. The ultrasonic sound flaw detection is made at the overall length of the body. The thread is phosphate, greased, and equipped with a thread protector as per API specification.
The roller reamer body is connected to the drill pipe by a threaded connection and uses drilling fluid to cool and lubricate the roller cutters. The roller knives are mounted on bearings that allow them to spin freely as they come into contact with the hole wall. The body of the Roller Reamer is made of high-quality alloy steel. After heat treatment, Brinell Hardness is 285-341, impact energy is 54J. Threads cold rolled, phosphate, and protected with Thread protectors which comply with API Specification. Ultrasonic inspection is carried out on each part of the whole body, Heat treated and machined with precise dimensional control roller reamer parts are inspected in the pre-and post-manufacturing process phases and checked
again for conformance to interchangeability needs and requirements. An improved combination of rollers and pressure blocks allows cutters can easily be replaced with enhanced lubricant.
