# US 10,502,009 B2 · Smart selective drilling fluid system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,009 B2 - Document ID: US10502009B2 - Status: Granted - Kind: B2 - Application number: 15/434,575 - Filed: 2017-02-16 - Published: 2018-08-16 - Granted: 2019-12-10 - Earliest claimed: 2017-02-16 - Assignees: Saudi Arabian Oil Company - Applicants: Saudi Arabian Oil Company - Inventors: Ossama R. Sehsah - Web page: https://patentgrep.com/patent/US10502009B2 ## CPC - E21B 21/01: Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes - E21B 44/00: Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions - E21B 44/08: in response to the amplitude of the movement of the percussion tool, e.g. jump or recoil - G05D 7/0641: {using a plurality of throttling means (G05D7/067 takes precedence)} - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES ## Abstract A drilling fluid system and associated method for supplying drilling mud to a drilling operation includes a plurality of first sensors associated with a first mud pit, configured to measure a plurality of properties of the drilling mud in the first mud pit, a plurality of second sensors associated with a second mud pit, configured to measure the plurality of properties of the drilling mud in the second mud pit, and a control unit configured to receive measurements from the plurality of first sensors and the plurality of second sensors, determine which of the mud pits comprises drilling mud with a desired plurality of properties, and cause to operate a first valve associated with the first mud pit or a second valve associated with the second mud pit for selecting drilling mud from the first mud pit or the second mud pit based on the determination. ## Claims ### Claim 1 A drilling fluid system for supplying drilling mud to a drilling operation, the drilling fluid system comprising: a first mud pit for receiving drilling mud from a first mud input; a plurality of first sensors associated with the first mud pit, the plurality of first sensors configured to measure a plurality of properties of the drilling mud in the first mud pit; a second mud pit for receiving drilling mud from a second mud input; a plurality of second sensors associated with the second mud pit, the plurality of second sensors configured to measure the plurality of properties of the drilling mud in the second mud pit; and a control unit operatively coupled to the plurality of first sensors and the plurality of second sensors, the control unit further configure to: receive measurements from the plurality of first sensors and the plurality of second sensors in real time; compare measurements from the plurality of first sensors to the measurements from the plurality of second sensors; determine which of the mud pits comprises drilling mud with the most number of measurements that fall within predetermined threshold values predefined for each of the plurality of properties; and cause to operate a first valve associated with the first mud pit or a second valve associated with the second mud pit for selecting drilling mud from the first mud pit or the second mud pit based on the determination. ### Claim 2 (depends on 1) The system of claim 1, further comprising: a third mud pit for receiving drilling mud from a third mud input; a plurality of third sensors associated with the third mud pit, the plurality of third sensors configured to measure the plurality of properties of the drilling mud in the third mud pit; and the control unit operatively coupled to the plurality of third sensors, the control unit further configure to: receive measurements from the plurality of third sensors; determine which of the mud pits comprises drilling mud with the most number of measurements that fall within predetermined threshold values predefined for each of the plurality of properties; and cause to operate the first valve, the second valve, or a third valve associated with the third mud pit for selecting drilling mud from the first mud pit or the second mud pit or the third mud pit based on the determination. ### Claim 3 (depends on 2) The system of claim 2, further comprising: a mud suction manifold for receiving the drilling mud from the first mud pit, the second mud pit, or the third mud pit, and supplying the drilling mud to a well bore. ### Claim 4 (depends on 2) The system of claim 2, wherein the control unit is further configured to: trigger an alarm if the measurements from the plurality of first sensors or the plurality of second sensors or the plurality of third sensors are outside of a predetermined threshold, the predetermined threshold being predefined for each of the plurality of properties; and cause corrective action in one or more mud pits where the measurements are outside of the predetermined threshold. ### Claim 5 (depends on 4) The system according to claim 4, wherein the corrective action is notified in real time to a mud engineer in a control room located offshore or onshore. ### Claim 6 (depends on 2) The system of claim 2, wherein the plurality of first sensors, second sensors, and third sensors comprise at least one of a temperature sensor, conductivity sensor, density sensor, pH sensor, viscosity sensor, Rheometer, pressure sensor, chemical sensor, and a particle size analyzer. ### Claim 7 (depends on 6) The system according to claim 6, wherein the measurements are obtained in real time, and the plurality of first sensors, second sensors, and third sensors are capable of operating in hazardous environments. ### Claim 8 (depends on 2) The system of claim 2, wherein the plurality of properties comprise at least one of mud temperature, weight, density, viscosity, rheology, gel strength, pH, hardness, conductivity, sand content, particle size, pressure, Calcium content, Magnesium content, Chloride content, Potassium content, alkalinity or lime content, and clay content. ### Claim 9 A method for selectively supplying drilling mud to a drilling operation, the method comprising: measuring, by a plurality of first sensors associated with a first mud pit, a plurality of properties of the drilling mud in the first mud pit; measuring, by a plurality of second sensors associated with a second mud pit, the plurality of properties of the drilling mud in the second mud pit; receiving, by a control unit operatively coupled to the plurality of first sensors and the plurality of second sensors, measurements from the plurality of first sensors and the plurality of second sensors in real time; comparing, by the control unit, measurements from the plurality of first sensors and to the measurements from the plurality of second sensors; determining, by the control unit, which of the mud pits comprises drilling mud with the most number of measurements that fall within predetermined threshold values predefined for each of the plurality of properties; and causing, by the control unit, to operate a first valve associated with the first mud pit or a second valve associated with the second mud pit for selecting drilling mud from the first mud pit or the second mud pit based on the determining step. ### Claim 10 (depends on 9) The method of claim 9, further comprising: measuring, by a plurality of third sensors associated with a third mud pit, the plurality of properties of the drilling mud in the third mud pit; receiving, by the control unit, measurements from the plurality of third sensors; determining, by the control unit, which of the mud pits comprises drilling mud with the most number of measurements that fall within predetermined threshold values predefined for each of the plurality of properties; and causing, by the control unit, to operate the first valve, the second valve, or a third valve associated with the third mud pit for selecting drilling mud from the first mud pit or the second mud pit or the third mud pit based on the determining step. ### Claim 11 (depends on 10) The method of claim 10, further comprising: receiving the drilling mud from the first mud pit, the second mud pit, or the third mud pit in a mud suction manifold; and supplying the drilling mud from the mud suction manifold to a well bore. ### Claim 12 (depends on 10) The method of claim 10, further comprising: triggering an alarm, by the control unit, if the measurements from the plurality of first sensors or the plurality of second sensors or the plurality of third sensors are outside of a predetermined threshold, the predetermined threshold being predefined for each of the plurality of properties; and causing, by the control unit, corrective action in one or more mud pits where the measurements are outside of the predetermined threshold. ### Claim 13 (depends on 12) The method of claim 12, wherein the corrective action is notified in real time to a mud engineer in a control room located offshore or onshore. ### Claim 14 (depends on 10) The method of claim 10, wherein the plurality of first sensors, second sensors, and third sensors comprise at least one of a temperature sensor, conductivity sensor, density sensor, pH sensor, viscosity sensor, Rheometer, pressure sensor, chemical sensor, and a particle size analyzer. ### Claim 15 (depends on 10) The method of claim 10, wherein the plurality of properties comprise at least one of mud temperature, weight, density, viscosity, rheology, gel strength, pH, hardness, conductivity, sand content, particle size, pressure, Calcium content, Magnesium content, Chloride content, Potassium content, alkalinity or lime content, and clay content. ### Claim 16 (depends on 10) The method of claim 10, wherein the measurements are obtained in real time, and the plurality of first sensors, second sensors, and third sensors are capable of operating in hazardous environments. ### Claim 17 A control unit in a drilling fluid system, the control unit configured to: receive measurements of a plurality of mud properties from a plurality of first sensors associated with a first mud pit, in real time; receive measurements of the plurality of mud properties from a plurality of second sensors associated with a second mud pit, in real time; compare measurements from the plurality of first sensors to the measurements from the plurality of second sensors; determine which of the mud pits comprises drilling mud with the most number of measurements that fall within predetermined threshold values predefined for each of the plurality of properties; and cause to operate a first valve associated with the first mud pit or a second valve associated with the second mud pit for selecting drilling mud from the first mud pit or the second mud pit based on the determination. ### Claim 18 (depends on 17) The control unit of claim 17, further configured to: receive measurements of the plurality of mud properties from a plurality of third sensors associated with a third mud pit; determine which of the mud pits comprises drilling mud with the most number of measurements that fall within predetermined threshold values predefined for each of the plurality of properties; and cause to operate the first valve, the second valve, or a third valve associated with the third mud pit for selecting drilling mud from the first mud pit or the second mud pit or the third mud pit based on the determination. ### Claim 19 (depends on 18) The control unit of claim 18, further configured to: trigger an alarm if the measurements from the plurality of first sensors or the plurality of second sensors or the plurality of third sensors are outside of a predetermined threshold, the predetermined threshold being predefined for each of the plurality of properties; and cause corrective action in one or more mud pits where the measurements are outside of the predetermined threshold. ### Claim 20 (depends on 19) The control unit of claim 19, wherein the determining step further comprises comparing measurements from the first mud pit, the second mud pit, and the third mud pit, and selecting the mud pit with the most number of measurements that fall within the predetermined threshold values.