# US 2014/0196905 A1 · Downhole vibratory apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0196905 A1 - Document ID: US20140196905A1 - Status: Published application - Kind: A1 - Application number: 13/739,229 - Filed: 2013-01-11 - Published: 2014-07-17 - Earliest claimed: 2013-01-11 - Assignees: Thru Tubing Solutions, Inc. - Applicants: Thru Tubing Solutions, Inc. - Inventors: Roger Schultz; Brock Watson - Web page: https://patentgrep.com/patent/US20140196905A1 ## CPC - E21B 28/00: Vibration generating arrangements for boreholes or wells, e.g. for stimulating production ({for fishing for or freeing objects E21B31/005;} for transmitting measuring-signals E21B47/14; for geophysical measurements G01V1/02) - E21B 4/02: Fluid rotary type drives - E21B 7/24: Drilling using vibrating or oscillating means, e.g. out-of-balance masses (percussion drilling E21B1/00) - E21B 34/06: in wells - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract The present disclosure is for a vibratory downhole rotary apparatus. The apparatus includes a cylindrical hollow body, a stator disposed within the cylindrical hollow body and a rotor disposed within the stator. The apparatus also includes a flow resistance system to vary the resistance of fluid flow through the apparatus to increase and decrease backpressure across the apparatus. ## Claims ### Claim 1 A vibratory downhole rotary apparatus, the apparatus comprising: a cylindrical hollow body having a first end and a second end; a stator disposed within the cylindrical hollow body; a rotor rotatably disposed within the stator; and a flow resistance system to vary the resistance of fluid flow through the apparatus to increase and decrease backpressure across the apparatus. ### Claim 2 (depends on 1) The apparatus of claim 1 wherein the stator is constructed of substantially metallic materials. ### Claim 3 (depends on 1) The apparatus of claim 1 wherein the flow resistance system includes a fluid port in the rotor to permit fluid to flow from between the stator and rotor to an internal passageway of the rotor, the internal passageway of the rotor disposed in a second end of the rotor. ### Claim 4 (depends on 3) The apparatus of claim 3 wherein the rotor includes at least one lobe and the stator includes at least NL+1 number of cavities, the cavities sized to receive at least one lobe of the rotor. ### Claim 5 (depends on 4) The apparatus of claim 4 wherein the fluid port is disposed within a single lobe of the rotor and is positioned substantially perpendicular to the internal passageway of the rotor. ### Claim 6 (depends on 1) The apparatus of claim 1 wherein the flow resistance system further includes a bearing assembly positioned in the second end of the apparatus, the bearing assembly having an upper thrust bearing attached to the rotor that spins and rotates against a lower thrust bearing as the rotor rotates and orbits within the stator. ### Claim 7 (depends on 6) The apparatus of claim 6 wherein the upper thrust bearing and the lower thrust bearing include fluid passageways that permit fluid to flow from the internal passageway of the rotor into the second end of the apparatus and out of the apparatus. ### Claim 8 A vibratory downhole rotary apparatus, the apparatus comprising: a cylindrical hollow body having a first end and a second end; a stator disposed within the cylindrical hollow body; a rotor rotatably disposed within the stator, a portion of the rotor having an internal passageway in fluid communication with the second end of the cylindrical hollow body; and a fluid port in the rotor to permit fluid to flow from between the stator and rotor to the internal passageway of the rotor. ### Claim 9 (depends on 8) The apparatus of claim 8 wherein the rotor includes at least one lobe and the stator includes at least NL+1 number of cavities, the cavities sized to receive at least one lobe of the rotor. ### Claim 10 (depends on 9) The apparatus of claim 9 wherein the fluid port is disposed within a single lobe of the rotor and is positioned substantially perpendicular to the internal passageway of the rotor. ### Claim 11 (depends on 8) The apparatus of claim 8 wherein the apparatus further includes a bearing assembly positioned in the second end of the apparatus, the bearing assembly having an upper thrust bearing attached to the rotor that spins and rotates against a lower thrust bearing as the rotor rotates and orbits within the stator. ### Claim 12 (depends on 8) The apparatus of claim 8 wherein the upper thrust bearing and the lower thrust bearing include fluid passageways that permit fluid to flow from the internal passageway of the rotor into the second end of the apparatus and out of the apparatus. ### Claim 13 A vibratory downhole rotary apparatus having a fluid passage flow area, the apparatus comprising: a cylindrical hollow body having a first end and a second end; a stator disposed within the cylindrical hollow body; a rotor rotatably disposed within the stator; a rotatable fluid passage body attached to the rotor and disposed within the cylindrical hollow body, the rotatable fluid passage body having a fluid passage opening therein; a fluid flow restrictor positioned adjacent to the rotatable fluid passage body and disposed within the cylindrical hollow body, the fluid flow restrictor causing alternating increasing and decreasing flow resistance to fluid flowing through the apparatus; and wherein the fluid passage flow area of the apparatus is constant. ### Claim 14 (depends on 13) The apparatus of claim 13 wherein the fluid passage opening is cylindrically shaped and has a diameter that decreases in the direction from the first end towards the second end of the cylindrical hollow body. ### Claim 15 (depends on 13) The apparatus of claim 13 wherein the fluid flow restrictor comprises: a vortex chamber; a plurality of fluid inlet ports in fluid communication with the vortex chamber; and an outlet disposed in the vortex chamber to permit fluid to exit the vortex chamber and ultimately exit the second end of the cylindrical hollow body. ### Claim 16 (depends on 15) The apparatus of claim 15 wherein the fluid flow restrictor includes: a first inlet port in fluid communication with the vortex chamber, the first inlet port positioned such that during rotation of the rotatable fluid passage body, the fluid passage opening is temporarily aligned with the first inlet port which allows fluid to enter the vortex chamber and create a clockwise vortex therein and increase the backpressure across the apparatus; and a second inlet port in fluid communication with the vortex chamber, the first inlet port positioned such that during rotation of the rotatable fluid passage body, the fluid passage opening is temporarily aligned with the second inlet port which allows fluid to enter the vortex chamber and create a counter-clockwise vortex therein and increase the backpressure across the apparatus. ### Claim 17 (depends on 16) The apparatus of claim 16 wherein the first inlet port and the second inlet port are positioned relative to the vortex chamber such that fluid is directed substantially tangentially into the vortex chamber. ### Claim 18 (depends on 16) The apparatus of claim 16 wherein the second inlet port is positioned relative to the vortex chamber such that fluid is directed towards a center portion of the vortex chamber. ### Claim 19 (depends on 13) The apparatus of claim 13 wherein the stator is constructed of elastomeric materials or substantially metallic materials. ### Claim 20 (depends on 13) The apparatus of claim 13 wherein the fluid flow restrictor is disposed within a lower thrust bearing that is disposed within the second end of the cylindrical hollow body and adjacent to the rotatable fluid passage body, the lower thrust bearing sustaining rotational and sliding contact with the rotatable fluid passage body when the rotatable fluid passage body rotates.