# US 11,905,828 B1 · Monitoring drilling conditions and estimating rock properties > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,905,828 B1 - Document ID: US11905828B1 - Status: Granted - Kind: B1 - Application number: 17/875,107 - Filed: 2022-07-27 - Published: 2024-02-01 - Granted: 2024-02-20 - Earliest claimed: 2022-07-27 - Assignees: Halliburton Energy Services, Inc. - Applicants: Halliburton Energy Services, Inc. - Inventors: Shilin Chen; Van Jordan Brackin; Jonathan Kollar - Web page: https://patentgrep.com/patent/US11905828B1 ## CPC - E21B 49/003: {by analysing drilling variables or conditions (E21B49/005 takes precedence; systems specially adapted for monitoring a plurality of drilling variables or conditions E21B44/00)} - E21B 21/08: Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure (valve arrangements therefor E21B21/10) - E21B 47/04: Measuring depth or liquid level - E21B 47/013: Devices specially adapted for supporting measuring instruments on drill bits - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract A method and a system for a confined compressive strength (CCS) and an unconfined compressive strength (UCS) for one or more bedding layers. The method may include identifying a depth interval during a drilling operation as a distance between a first depth and a second depth, measuring one or more drill bit responses within the depth interval using a sensor package disposed on the drill bit, identifying one or more torsional bit vibrations, and identifying one or more bedding layers of the formation within the depth interval from the one or more torsional bit vibrations. The method may further include identifying the (CCS) and the (UCS) for each of the one or more bedding layers and identifying a bit wear of the drill bit within each of the one or more bedding layers using the one or more drill bit responses and the one or more torsional bit vibrations. ## Claims ### Claim 1 A method comprising: identifying a depth interval during a drilling operation as a distance between a first depth and a second depth; measuring one or more drill bit responses within the depth interval using a sensor package disposed on a drill bit, wherein the drill bit comprises a shank, and wherein the sensor package is disposed in a recessed area of the shank in an exterior of the drill bit; identifying one or more torsional bit vibrations within the depth interval from the one or more drill bit responses; determining one or more bedding layers of the formation within the depth interval from the one or more torsional bit vibrations; and identifying a confined compressive strength (CCS) for each of the one or more bedding layers using the one or more drill bit responses and the one or more torsional bit vibrations. ### Claim 2 (depends on 1) The method of claim 1, wherein the one or more drill bit responses are revolutions per minute (RPM), rate of penetration (ROP), weight on bit (WOB), or toque on bit (TOB). ### Claim 3 (depends on 1) The method of claim 1, wherein the one or more torsional bit vibrations are stick-slip vibration (SS), low frequency torsional oscillation (LFTO), high frequency torsional oscillation (HFTO), high frequency torsional noise (HFTN), or non-vibration along the depth interval. ### Claim 4 (depends on 1) The method of claim 1, further comprising applying one or more constraints to the one or more drill bit responses. ### Claim 5 (depends on 4) The method of claim 4, wherein the one or more constraints are a minimal specific energy, a maximal specific energy, and a minimal and a maximal drilling strength. ### Claim 6 (depends on 1) The method of claim 1, further comprising calculating one or more drill bit constants. ### Claim 7 (depends on 6) The method of claim 6, wherein the one or more drill bit constants are a cutting force inclination coefficient, a bit constant 7, and a critical depth of cut. ### Claim 8 (depends on 1) The method of claim 1, further comprising, calculating a pore pressure. ### Claim 9 (depends on 8) The method of claim 8, further comprising identifying an unconfined compressive strength (UCS) for each of the one or more bedding layers using the one or more drill bit responses and the one or more torsional bit vibrations and using the pore pressure to identify the UCS. ### Claim 10 (depends on 1) The method of claim 1, further comprising measuring a downhole mud pressure with the sensor package. ### Claim 11 (depends on 10) The method of claim 10, further comprising identifying an unconfined compressive strength (UCS) for each of the one or more bedding layers using the one or more drill bit responses and the one or more torsional bit vibrations and using the downhole mud pressure to identify the UCS. ### Claim 12 (depends on 1) The method of claim 1, wherein the sensor package is an insert that is disposed in the shank of the drill bit. ### Claim 13 (depends on 1) The method of claim 1, further comprising identifying a bit wear of the drill bit within each of the one or more bedding layers using the one or more drill bit responses and the one or more torsional bit vibrations. ### Claim 14 A system comprising: a drill bit comprising: a shank; a bit body connected to the shank; and one or more blades connected to the bit body; a sensor package disposed on the drill bit, wherein the sensor package is disposed in a recessed area of the shank in an exterior of the drill bit, wherein the sensor package is configured to: measure one or more drill bit responses within a depth interval; and an information handling system in communication with the sensor package, wherein the information handling system is configured to: identify one or more torsional bit vibrations within the depth interval from the one or more drill bit responses; determine one or more bedding layers of a formation within the depth interval from the one or more torsional bit vibrations; and identify a confined compressive strength (CCS) for each of the one or more bedding layer using the one or more drill bit responses and the one or more torsional bit vibrations. ### Claim 15 (depends on 14) The system of claim 14, wherein the one or more drill bit responses are revolutions per minute (RPM), rate of penetration (ROP), weight on bit (WOB), or toque on bit (TOB). ### Claim 16 (depends on 14) The system of claim 14, wherein the one or more torsional bit vibrations are stick-slip vibration (SS), low frequency torsional oscillation (LFTO), high frequency torsional oscillation (HFTO), high frequency torsional noise (HFTN), or non-vibration along the depth interval. ### Claim 17 (depends on 14) The system of claim 14, wherein the information handling system further configured to apply one or more constraints to the one or more drill bit responses, wherein the one or more constraints are a minimal specific energy, a maximal specific energy, and a drilling strength. ### Claim 18 (depends on 14) The system of claim 14, wherein the sensor package is an insert that is disposed in the shank of the drill bit. ### Claim 19 (depends on 14) The system of claim 14, wherein the sensor package is further configured measure a downhole mud pressure with the sensor package and the information handling system is further configured identify an unconfined compressive strength (UCS) for each of the one or more bedding layer using the one or more drill bit responses and the one or more torsional bit vibrations and to use the downhole mud pressure to identify the UCS. ### Claim 20 (depends on 14) The system of claim 14, wherein the information handling system is further configured to identify a bit wear of the drill bit within each of the one or more bedding layers using the one or more drill bit responses and the one or more torsional bit vibrations. ### Claim 21 A system comprising: a drill bit comprising: a shank; a bit body connected to the shank; and one or more blades connected to the bit body; a sensor package, wherein the sensor package includes at least one insert that is secured, via threading and/or compression, within a recessed area formed in the drill bit, wherein the sensor package is configured to: measure one or more drill bit responses within a depth interval; and an information handling system in communication with the sensor package, wherein the information handling system is configured to: identify one or more torsional bit vibrations within the depth interval from the one or more drill bit responses; determine one or more bedding layers of a formation within the depth interval from the one or more torsional bit vibrations; and identify a confined compressive strength (CCS) for each of the one or more bedding layers using the one or more drill bit responses and the one or more torsional bit vibrations. ### Claim 22 (depends on 21) The system of claim 21, wherein the sensor package is configured to identify a bit wear of the drill bit within each of the one or more bedding layers using the one or more drill bit responses and the one or more torsional bit vibrations.