# US 12,006,822 B2 · High flowrate formation tester

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,006,822 B2
- Document ID: US12006822B2
- Status: Granted
- Kind: B2
- Application number: 17/888,756
- Filed: 2022-08-16
- Published: 2022-12-08
- Granted: 2024-06-11
- Earliest claimed: 2020-07-16
- Assignees: Halliburton Energy Services, Inc.
- Applicants: Halliburton Energy Services, Inc.
- Inventors: Edward Harrigan; Matthew L. Lee; Ameet B. Agnihotri; Charles Wilton Seckar; Christopher Michael Jones; Nestor Javier Rodriguez; Darren George Gascooke
- Web page: https://patentgrep.com/patent/US12006822B2

## CPC

- E21B 49/088: {combined with sampling}
- E21B 49/10: using side-wall fluid samplers or testers
- E21B 47/008: Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions
- E21B 47/06: Measuring temperature or pressure
- E21B 47/10: Locating fluid leaks, intrusions or movements
- E21B 49/008: {by injection test; by analysing pressure variations in an injection or production test, e.g. for estimating the skin factor (measuring pressure E21B47/06)}
- E21B 49/081: {with down-hole means for trapping a fluid sample (E21B49/10 takes precedence)}
- E21B 49/0875: {determining specific fluid parameters}
- 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 pipe string; a wireline cable run through the pipe string; and a downhole tool for formation testing, wherein the downhole tool comprises, an upper assembly, an impeller unit connected to a downhole end of the upper assembly, wherein the impeller unit comprises a first impeller coupled to a second impeller by a shaft, a first flowline having a first end that is open to the formation, a packer unit that isolates a portion of a borehole surrounding the first end of the first flowline from the rest of the borehole, and a tool string connected to the first flowline, wherein the tool string hydraulically connects the packing device to the upper assembly.

## Claims

### Claim 1

A system comprising:
a pipe string;
a wireline cable run through the pipe string; and
a downhole tool for formation testing, wherein the downhole tool comprises,
an upper assembly,
an impeller unit connected to a downhole end of the upper assembly, wherein the impeller unit comprises a first impeller coupled to a second impeller by a shaft,
a first flowline having a first end that is open to the formation,
a packer unit that isolates a portion of a borehole surrounding the first end of the first flowline from the rest of the borehole, and
a tool string connected to the first flowline, wherein the tool string hydraulically connects the packing device to the upper assembly.

### Claim 2 (depends on 1)

The system of claim 1, wherein the tool string further comprises modules for analyzing the formation fluid properties, wherein the modules comprise at least one of a pump, a fluid identification module, a module for storing and retrieving fluid samples, a reservoir description module, a power and telemetry module, and an inverted wireline logging head.

### Claim 3 (depends on 1)

The system of claim 1, wherein the wireline cable is connected to the upper assembly through a wet-connect latch.

### Claim 4 (depends on 1)

The system of claim 1, wherein the impeller unit comprises electrical connections suitable for routing the wireline cable to the tool string.

### Claim 5 (depends on 1)

The system of claim 1, wherein the first impeller transfers the mechanical power to operate the second impeller through the shaft which is located longitudinally within the downhole tool.

### Claim 6 (depends on 1)

The system of claim 1, further comprising a valve along the first flowline between the first end and the second impeller to control a flow rate of the formation fluid based on the mechanical power.

### Claim 7 (depends on 1)

The system of claim 1, wherein the tool string further comprises valves to inflate the packer unit to isolate the portion of the borehole surrounding the first end of the first flowline from the rest of the borehole.

### Claim 8 (depends on 1)

The system of claim 1, further comprising a gauge for monitoring pressure of the formation fluid from the isolated portion of the borehole.

### Claim 9 (depends on 1)

The system of claim 1, further comprising a valve along a second flowline connected to the first flowline to isolate the packer unit from the rest of the downhole tool and from the wellbore.

### Claim 10 (depends on 9)

The system of claim 9, wherein the first flowline has a larger diameter than the second flowline, and wherein the larger diameter produces a lower pressure drop to enable increased fluid circulation.

### Claim 11 (depends on 9)

The system of claim 9, further comprising a third flowline connected to the packer unit via a valve to inflate the packer unit, wherein a diameter of the third flowline is less than a diameter of the first flowline, and wherein the third flowline branches off the first flowline.