# US 10,370,918 B2 · Downhole vibratory apparatus

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- Number: US 10,370,918 B2
- Document ID: US10370918B2
- Status: Granted
- Kind: B2
- Application number: 15/788,511
- Filed: 2017-10-19
- Published: 2018-02-08
- Granted: 2019-08-06
- 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/US10370918B2

## 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, the flow resistance system includes a fluid port in the rotor to permit fluid to flow from an internal passageway in the rotor to between the stator and the rotor.

### 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 internal passageway of the rotor is 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 one more cavity than the number of lobes on the rotor, the cavities sized to receive at least one lobe of the rotor.

### Claim 5 (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 6 (depends on 5)

The apparatus of claim 5 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 7

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 the internal passageway in the rotor to between the stator and the rotor.

### Claim 8 (depends on 7)

The apparatus of claim 7 wherein the rotor includes at least one lobe and the stator includes at least one more cavity than the number of lobes on the rotor, the cavities sized to receive at least one lobe of the rotor.

### Claim 9 (depends on 7)

The apparatus of claim 7 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 10 (depends on 7)

The apparatus of claim 7 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.