# US 11,898,436 B2 · Method and apparatus for downhole charging, initiation, and release of drilling micro sensing systems (microchips) > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,898,436 B2 - Document ID: US11898436B2 - Status: Granted - Kind: B2 - Application number: 17/644,302 - Filed: 2021-12-14 - Published: 2023-06-15 - Granted: 2024-02-13 - Earliest claimed: 2021-12-14 - Assignees: Saudi Arabian Oil Company - Applicants: Saudi Arabian Oil Company - Inventors: Abrar Alshaikh; Bodong Li; Jianhui Xu; Guodong Zhan - Web page: https://patentgrep.com/patent/US11898436B2 ## CPC - E21B 47/01: Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like - E21B 34/142: {unsupported or free-falling elements, e.g. balls, plugs, darts or pistons} - E21B 47/138: {Devices entrained in the flow of well-bore fluid for transmitting data, control or actuation signals} - E21B 41/0085: {Adaptations of electric power generating means for use in boreholes} - E21B 2200/06: Sleeve valves - E21B 2200/08: Down-hole devices using materials which decompose under well-bore conditions - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract A system includes a sliding sleeve, a ball landing seat, a plurality of microchips, a hydraulic piston, and a ball catcher. The sliding sleeve is installed within a tubular body having an exit groove. The ball landing seat is formed by the sliding sleeve. The plurality of microchips are housed in a microchip ring installed within the sliding sleeve. The hydraulic piston is installed within the microchip ring and triggered by reception of a ball in the ball landing seat. The ball reduces a cross sectional area of a flow path while in the ball landing seat. The hydraulic piston releases the plurality of microchips through the exit groove and into the well to gather data. The ball catcher is configured to receive and hold the ball after the plurality of microchips are released into the well. The ball catcher and the ball are made of a dissolvable material. ## Claims ### Claim 1 A system for a well comprising: a sliding sleeve installed within a tubular body having an exit groove; a ball landing seat formed by the sliding sleeve; a plurality of microchips housed in a microchip ring installed within the sliding sleeve; a hydraulic piston installed within the microchip ring, triggered by reception of a ball in the ball landing seat, the ball reducing a cross sectional area of a flow path, wherein the hydraulic piston releases the plurality of microchips through the exit groove and into the well to gather data; and a ball catcher configured to receive and hold the ball after the plurality of microchips are released into the well, wherein the ball catcher and the ball are made of a dissolvable material. ### Claim 2 (depends on 1) The system of claim 1, wherein a track is machined into the tubular body and the sliding sleeve is movably installed on the track. ### Claim 3 (depends on 2) The system of claim 2, wherein a pressure is applied to the ball, landed in the ball landing seat, by a fluid to trigger movement of the sliding sleeve along the track. ### Claim 4 (depends on 1) The system of claim 1, wherein movement of the sliding sleeve creates an opening in the microchip ring that allows a fluid to enter the hydraulic piston. ### Claim 5 (depends on 4) The system of claim 4, wherein the fluid applies a pressure against the hydraulic piston to move the hydraulic piston and push the plurality of microchips out of the exit groove. ### Claim 6 (depends on 5) The system of claim 5, wherein the hydraulic piston pushes the plurality of microchips in a clockwise direction. ### Claim 7 (depends on 1) The system of claim 1, further comprising a key seat installed within the tubular body, configured to receive a key installed on the sliding sleeve. ### Claim 8 (depends on 7) The system of claim 7, wherein reception of the key in the key seat allows the ball to pass through the sliding sleeve and land in the ball catcher. ### Claim 9 (depends on 1) The system of claim 1, wherein the tubular body comprises a pin end and a box end which mate with a corresponding box end and a corresponding pin end, respectively, of a drill string. ### Claim 10 (depends on 1) The system of claim 1, further comprising a plurality of microchip rings installed within the sliding sleeve. ### Claim 11 A method for a well, the method comprising: installing a sliding sleeve into a tubular body, the sliding sleeve having a ball landing seat, a microchip ring, a plurality of microchips, and a hydraulic piston; pumping a ball into the ball landing seat to move the sliding sleeve, the ball reducing a cross sectional area of a flow path; triggering the hydraulic piston through movement of the sliding sleeve; releasing the plurality of microchips from the microchip ring into the well through an exit groove in the tubular body using the hydraulic piston; receiving the ball in a ball catcher; dissolving the ball and the ball catcher using a fluid; and gathering data of the well using the plurality of microchips. ### Claim 12 (depends on 11) The method of claim 11, wherein installing the sliding sleeve into the tubular body comprises installing the sliding sleeve into a track machined into the tubular body. ### Claim 13 (depends on 12) The method of claim 12, wherein pumping the ball into the ball landing seat to move the sliding sleeve further comprises applying a pressure to the ball, landed in the ball landing seat, using the fluid to move the sliding sleeve along the track. ### Claim 14 (depends on 11) The method of claim 11, wherein triggering the hydraulic piston through movement of the sliding sleeve comprises creating an opening in the microchip ring. ### Claim 15 (depends on 14) The method of claim 14, wherein triggering the hydraulic piston through movement of the sliding sleeve further comprises pumping a fluid into the opening of the microchip ring to move the hydraulic piston and push the plurality of microchips out of the exit groove. ### Claim 16 (depends on 15) The method of claim 15, wherein the hydraulic piston pushes the plurality of microchips in a clockwise direction. ### Claim 17 (depends on 11) The method of claim 11, wherein receiving and holding the ball in the ball catcher comprises receiving a key, installed on the sliding sleeve, in a key seat, installed within the tubular body. ### Claim 18 (depends on 17) The method of claim 17, wherein receiving the key, installed on the sliding sleeve, in the key seat, installed within the tubular body, further comprises pumping the ball through the sliding sleeve to be landed in the ball catcher. ### Claim 19 (depends on 11) The method of claim 11, further comprising installing the tubular body in a drill string using a pin end and a box end. ### Claim 20 (depends on 11) The method of claim 11, further comprising installing a plurality of microchip rings within the sliding sleeve.