# US 11,306,556 B2 · Freeing stuck subterranean service tools > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,306,556 B2 - Document ID: US11306556B2 - Status: Granted - Kind: B2 - Application number: 16/879,872 - Filed: 2020-05-21 - Published: 2021-11-25 - Granted: 2022-04-19 - Earliest claimed: 2020-05-21 - Assignees: Chevron U.S.A. Inc. - Applicants: Chevron U.S.A. Inc. - Inventors: Paul Aaron Price - Web page: https://patentgrep.com/patent/US11306556B2 ## CPC - E21B 31/00: Fishing for or freeing objects in boreholes or wells - E21B 31/107: using impact means for releasing stuck parts, e.g. jars - E21B 29/00: Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground - E21B 31/03: Freeing by flushing - E21B 34/063: {Valve or closure with destructible element, e.g. frangible disc (E21B34/103 takes precedence)} - E21B 43/04: Gravelling of wells - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract An assembly disposed within a subterranean wellbore can include a first dislodging tool coupled to a bottom end of a tubing string, wherein the first dislodging tool, when enabled at a first time, performs a first action to free at least one service tool, disposed below the first dislodging tool in the subterranean wellbore, from being stuck. ## Claims ### Claim 1 An assembly disposed within a subterranean wellbore, the assembly comprising: a reverse circulating tool coupled to a service tool disposed below the reverse circulating tool, wherein the service tool comprises a gravel pack or frac pack that slides within a packer, and wherein the reverse circulating tool is configured, when enabled at a first time, to direct fluid from an annulus through a reversing port into a tubing string thereby permitting a flow of the fluid to free the service tool from being stuck; a jarring tool coupled to the reverse circulating tool and disposed above the reverse circulating tool, the jarring tool configured, when enabled at a second time, to cause a top portion of the jarring tool to slide against a bottom portion of the jarring tool thereby imparting a jarring force to the at least one service tool; and a disconnect tool comprising a top disconnect portion and a bottom disconnect portion, the top disconnect portion coupled to the tubing string and the bottom disconnect portion coupled to the jarring tool, the disconnect tool configured, when enabled at a third time, to cause the top disconnect portion to separate from the bottom disconnect portion. ### Claim 2 (depends on 1) The assembly of claim 1, wherein the reverse circulating tool comprises a piston mandrel and a ratcheting system that locks the piston mandrel in an upward position. ### Claim 3 (depends on 1) The assembly of claim 1, wherein the fluid is a pressurized fluid that enters into an aperture that results after a fracture disk ruptures, wherein the pressurized fluid opens at least one circulating port. ### Claim 4 (depends on 1) The assembly of claim 1, wherein the reverse circulating tool is enabled by increasing a pressure in the subterranean wellbore above a threshold value. ### Claim 5 (depends on 1) The assembly of claim 1, wherein the top portion is separated from the bottom portion when the tubing string is lifted toward a surface, and wherein the top portion falls against the bottom portion when the tubing string is subsequently released after being lifted toward the surface. ### Claim 6 (depends on 5) The assembly of claim 5, wherein the tubing string is lifted and subsequently released multiple times before determining whether the at least one service tool has been released. ### Claim 7 (depends on 1) The assembly of claim 1, wherein the service tool is utilized in a field operation, wherein the field operation causes the service tool to become stuck, wherein the field operation comprises at least one of a group consisting of a fracturing operation and a gravel packing operation. ### Claim 8 (depends on 1) The assembly of claim 1, wherein the second time is subsequent to the first time, and wherein the jarring tool is enabled when the reverse circulating tool, after being enabled, fails to free the service tool at the first time. ### Claim 9 (depends on 8) The assembly of claim 8, wherein the third time is subsequent to the second time, and wherein the disconnect tool is enabled when the reverse circulating tool and the jarring tool, after being enabled, fail to free the service tool at the first time or the second time. ### Claim 10 (depends on 9) The assembly of claim 9, wherein the disconnect tool comprises a shifting sleeve that engages a shear disc that severs the tubing string from the service tool. ### Claim 11 (depends on 1) A method of using the assembly of claim 1 for freeing a service tool from a subterranean wellbore, the method comprising: determining, after a service operation has been performed by the service tool, that the service tool is stuck within the subterranean wellbore; performing, using a first part of the assembly disposed in the subterranean wellbore between a tubing string and the service tool, a first action to free the service tool, disposed below the assembly in the subterranean wellbore, from being stuck; and retrieving, after performing the first action, the service tool by removing the tubing string from the subterranean formation. ### Claim 12 (depends on 11) The method of claim 11, wherein performing the first action comprises: rupturing a fracture disk of the first part of the assembly to allow for a flow of fluid from an annulus of the assembly into a cavity of the assembly; and reversing at least one circulation pump to draw the fluid toward a surface through the cavity. ### Claim 13 (depends on 11) The method of claim 11, wherein performing the first action comprises: lifting the tubing string upward out of the subterranean wellbore by a distance, wherein lifting the tubing string also lifts a top portion of the first part of the assembly; and releasing the tubing string, wherein the top portion falls the distance to collide with a bottom portion of the first part of the assembly. ### Claim 14 (depends on 13) The method of claim 13, wherein lifting the tubing string and subsequently releasing the tubing string is repeated multiple times. ### Claim 15 (depends on 11) The method of claim 11, further comprising: performing, after performing the first action and using a second part of the assembly, a second action to free the service tool from being stuck, wherein the service tool is retrieved after performing the first action and the second action. ### Claim 16 (depends on 15) The method of claim 15, wherein the first action performed by the first part of the assembly is different from the second action performed by the second part of the assembly. ### Claim 17 (depends on 15) The method of claim 15, further comprising: performing, after performing the first action and the second action and using a third part of the assembly, a third action; withdrawing the tubing string from the subterranean wellbore; inserting a fishing tool into the subterranean wellbore; and removing, using the fishing tool, the service tool from the subterranean wellbore.