# US 12,371,956 B2 · Hydrodynamic down-hole anchors and related methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,371,956 B2 - Document ID: US12371956B2 - Status: Granted - Kind: B2 - Application number: 18/815,732 - Filed: 2024-08-26 - Published: 2025-03-20 - Granted: 2025-07-29 - Earliest claimed: 2023-08-24 - Assignees: Tech Tac Company, Inc. - Applicants: Tech Tac Company, Inc. - Inventors: James Baker; Luke Reary - Web page: https://patentgrep.com/patent/US12371956B2 ## CPC - E21B 23/01: for anchoring the tools or the like (E21B23/02 - E21B23/06 take precedence; anchoring of drives in the borehole E21B4/18) - E21B 17/0423: {with plural threaded sections, e.g. with two-step threads} - E21B 19/10: Slips; Spiders {; Catching devices (rotary tables with master bushing or kelly bushing E21B3/04)} - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract Tubing anchor catchers that include a mandrel having a first end portion and a second end portion, each end portion having threading with multiple starts, a first cone, a second cone, and a slip that is at least partially disposed between the first cone and the second cone. The first cone and second cone are coupled to the mandrel via the threading with multiple starts such that when the mandrel is rotated in a first direction with respect to at least one of the first cone and the second cone, the at least one of the first cone and the second cone is configured to move to reduce a distance between the first cone and the second cone to force the slip to move laterally from the tubing anchor catcher. Furthermore, the slip engages with a well bore or casing following between less than six rotations of the mandrel. ## Claims ### Claim 1 A tubing anchor catcher, comprising: a mandrel having a first end portion and a second end portion, each end portion having threading with multiple starts; a first cone; a second cone; and a slip that is at least partially disposed between the first cone and the second cone; wherein the first cone and the second cone are coupled to the mandrel via the threading with multiple starts such that when the mandrel is rotated in a first direction with respect to at least one of the first cone and the second cone, the at least one of the first cone and the second cone is configured to move to reduce a distance between the first cone and the second cone to force the slip to move laterally from the tubing anchor catcher, and wherein the slip engages with a well bore or casing following less than six rotations of the mandrel. ### Claim 2 (depends on 1) The tubing anchor catcher of claim 1, wherein each of the first cone and the second cone comprises threading with multiple starts. ### Claim 3 (depends on 1) The tubing anchor catcher of claim 1, wherein each of the first end portion and the second end portion of the mandrel has threading with two starts. ### Claim 4 (depends on 1) The tubing anchor catcher of claim 1, wherein each of the first end portion and the second end portion of the mandrel has threading with three starts. ### Claim 5 (depends on 1) The tubing anchor catcher of claim 1, wherein each of the first end portion and the second end portion of the mandrel has threading with four starts. ### Claim 6 (depends on 1) The tubing anchor catcher of claim 1, wherein the slip engages with the well bore or casing following between one and four rotations of the mandrel. ### Claim 7 (depends on 1) The tubing anchor catcher of claim 1, wherein the slip engages with the well bore or casing following between one and three rotations of the mandrel. ### Claim 8 A mandrel comprising: a proximal end comprising a single-start threading configured to couple to a first coupler that connects the proximal end to a first section of downhole tubing; a distal end comprising a single-start threading configured to couple to a second coupler that connects the distal end to a second section of downhole tubing; a proximal threaded portion comprising a multi-start threading configured to couple to a first cone; and a distal threaded portion comprising a multi-start threading configured to couple to a second cone; wherein when the mandrel is rotated in a first direction with respect to at least one of the first cone and the second cone, the at least one of the first cone and the second cone is configured to move to reduce a distance between the first cone and the second cone to force a slip to move laterally away from the mandrel, and wherein the slip engages with a well bore or casing following less than six rotations of the mandrel. ### Claim 9 (depends on 8) The mandrel of claim 8, wherein the proximal threaded portion is longer than the distal threaded portion. ### Claim 10 (depends on 8) The mandrel of claim 8, wherein each of the proximal threaded portion and the distal threaded portion comprises a dual-start threading. ### Claim 11 (depends on 8) The mandrel of claim 8, wherein each of the proximal threaded portion and the distal threaded portion comprises a three-start threading. ### Claim 12 (depends on 8) The mandrel of claim 8, wherein the slip engages with the well bore or casing following between one and four rotations of the mandrel. ### Claim 13 (depends on 8) The mandrel of claim 8, wherein the slip engages with the well bore or casing following between one and three rotations of the mandrel. ### Claim 14 (depends on 8) The mandrel of claim 8, wherein the multi-start threading of the proximal threaded portion comprises a thread direction that opposes a thread direction of the multi-start threading of the distal threaded portion. ### Claim 15 (depends on 14) The mandrel of claim 14, wherein the multi-start threading of the proximal threaded portion comprises right-hand threads, and wherein the multi-start threading of the distal threaded portion comprises left-hand threads. ### Claim 16 A tubing anchor catcher, comprising: a first coupler configured to couple the tubing anchor catcher to a first section of downhole tubing; a second coupler configured to couple the tubing anchor catcher to a second section of downhole tubing; a first cone; a second cone; a mandrel having a proximal end, a distal end, a proximal threaded portion, and a distal threaded portion, wherein the proximal end comprises a single-start threading configured to couple to the first coupler, wherein the distal end comprises a single-start threading configured to couple to the second coupler; wherein the proximal threaded portion comprises multi-start threads configured to couple to the first cone, and wherein the distal threaded portion comprises multi-start threads configured to couple to the second cone; and a slip that is at least partially disposed between the first cone and the second cone; wherein the first cone and the second cone are coupled to the mandrel via the proximal threaded portion and the distal threaded portion such that when the mandrel is rotated in a first direction with respect to at least one of the first cone and the second cone, the at least one of the first cone and the second cone is configured to move to reduce a distance between the first cone and the second cone to force the slip to move laterally from the tubing anchor catcher, and wherein the slip engages with a well bore or casing following less than six rotations of the mandrel. ### Claim 17 (depends on 16) The tubing anchor catcher of claim 16, wherein each of the proximal threaded portion and the distal threaded portion comprises a dual-start threading. ### Claim 18 (depends on 16) The tubing anchor catcher of claim 16, wherein the slip engages with the well bore or casing following less than four rotations of the mandrel. ### Claim 19 (depends on 16) The tubing anchor catcher of claim 16, wherein the multi-start threads of the proximal threaded portion comprises a thread direction that opposes a thread direction of the multi-start threads of the distal threaded portion. ### Claim 20 (depends on 16) The tubing anchor catcher of claim 16, wherein a number of rotations of the mandrel required for the slip to engage with the well bore or casing is proportional to a number of starts within the multi-start threads of the proximal threaded portion and the distal threaded portion.