# US 11,905,830 B2 · Identifying asphaltene precipitation and aggregation with a formation testing and sampling tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,905,830 B2 - Document ID: US11905830B2 - Status: Granted - Kind: B2 - Application number: 17/589,336 - Filed: 2022-01-31 - Published: 2022-10-06 - Granted: 2024-02-20 - Earliest claimed: 2021-04-01 - Assignees: Halliburton Energy Services, Inc. - Applicants: Halliburton Energy Services, Inc. - Inventors: Rohin Naveena-Chandran; Syed Muhammad Farrukh Hamza; Gibran Mushtaq Hashmi; Jason A. Rogers; Christopher Michael Jones; Anthony Herman VanZuilekom - Web page: https://patentgrep.com/patent/US11905830B2 ## CPC - E21B 49/08: Obtaining fluid samples or testing fluids, in boreholes or wells - E21B 47/06: Measuring temperature or pressure - E21B 49/087: {Well testing, e.g. testing for reservoir productivity or formation parameters} - E21B 49/10: using side-wall fluid samplers or testers - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract A system and method for a fluid sampling tool. The fluid sampling tool may include a probe section. The probe section may include one or more probes, one or more stabilizers, and a housing that houses a bi directional piston pump. The method may include disposing a fluid sampling tool into a wellbore at a first depth, pressing the one or more probes into a surface of the wellbore, drawing a reservoir fluid from the wellbore through the one or more probes, placing the reservoir fluid into the housing, isolating the housing from the one or more modules of the fluid sampling tool with one or more shut in valves, depressurizing the housing with the bi directional piston pump, and measuring the asphaltene precipitation of the reservoir fluid within the housing. ## Claims ### Claim 1 A fluid sampling tool comprising: a probe section comprising: one or more probes that are extendable from and attached to the probe section; at least two stabilizers that are extendable from and attached to the probe section; at least three valves; at least three pressures gauges; and a housing disposed in the probe section that houses a bi directional piston pump of 100 cc of capacity and a capability to operate up to 20000 psi below hydrostatic pressure, wherein the housing is configured to create asphaltene precipitation in a reservoir fluid with the bi directional piston pump. ### Claim 2 (depends on 1) The fluid sampling tool of claim 1, further comprising a pressure gauge is attached to the housing. ### Claim 3 (depends on 2) The fluid sampling tool of claim 2, wherein the pressure gauge measures the asphaltene precipitation in the housing. ### Claim 4 (depends on 1) The fluid sampling tool of claim 1, further comprising a fluid analysis module that is fluidly coupled to the probe section by a channel. ### Claim 5 (depends on 4) The fluid sampling tool of claim 4, further comprising one or more optical measurement tools disposed in the fluid analysis module. ### Claim 6 (depends on 5) The fluid sampling tool of claim 5, wherein the one or more optical measurement tools are configured to measure the asphaltene precipitation in the reservoir fluid in the channel. ### Claim 7 (depends on 1) The fluid sampling tool of claim 1, wherein the housing maintains a constant temperature. ### Claim 8 (depends on 1) The fluid sampling tool of claim 1, further comprising one or more probe channels connected to the one or more probes, the housing, and a channel. ### Claim 9 (depends on 8) The fluid sampling tool of claim 8, further comprising one or more shut in valves that are disposed in the one or more probe channels and the channel. ### Claim 10 (depends on 1) The fluid sampling tool of claim 1, wherein one or more shut in valves isolate the housing, the probe section, or a fluid analysis module. ### Claim 11 A method for measuring an asphaltene precipitation comprising: disposing a fluid sampling tool into a wellbore at a first depth, wherein the fluid sampling tool comprises: a probe section comprising: one or more probes that are extendable from and attached to the probe section; at least two stabilizers that are extendable from and attached to the probe section; and a housing disposed in the probe section that includes a bi directional piston pump of 100 cc of capacity and a capability to operate up to 20000 psi below hydrostatic pressure; pressing the one or more probes into a surface of the wellbore; drawing a reservoir fluid from the wellbore through the one or more probes; placing the reservoir fluid into the housing; isolating the housing of the fluid sampling tool with at least three shut in valves, wherein the isolated housing has at least one pressure gauge; depressurizing the housing with the bi directional piston pump; and measuring the asphaltene precipitation of the reservoir fluid within the housing. ### Claim 12 (depends on 11) The method of claim 11, wherein the measuring the asphaltene precipitation includes identifying an asphaltene precipitation onset, an upper asphaltene onset pressure, a bubble point, or a lower asphaltene onset pressure. ### Claim 13 (depends on 11) The method of claim 11, wherein the housing maintains a constant temperature. ### Claim 14 (depends on 11) The method of claim 11, wherein the pressure gauge measures the asphaltene precipitation in the housing. ### Claim 15 (depends on 11) The method of claim 11, wherein the fluid sampling tool further comprising a fluid analysis module that is fluidly coupled to the probe section by a channel. ### Claim 16 (depends on 15) The method of claim 15, wherein the fluid sampling tool comprises one or more optical measurement tools disposed in the fluid analysis module. ### Claim 17 (depends on 16) The method of claim 16, wherein the one or more optical measurement tools are configured to measure the asphaltene precipitation in the reservoir fluid in the channel. ### Claim 18 (depends on 11) The method of claim 11, further comprising moving the fluid sampling tool to a second depth in the wellbore. ### Claim 19 (depends on 18) The method of claim 18, further comprising identifying the asphaltene precipitation at the second depth.