# US 2016/0356154 A1 · System and Method for Sensing Fluids Downhole

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- Number: US 2016/0356154 A1
- Document ID: US20160356154A1
- Status: Published application
- Kind: A1
- Application number: 14/732,192
- Filed: 2015-06-05
- Published: 2016-12-08
- Earliest claimed: 2015-06-05
- Assignees: Baker Hughes Incorporated
- Applicants: Baker Hughes Incorporated
- Inventors: Muhammad A. Manzar; David M. Chace; Datong Sun
- Web page: https://patentgrep.com/patent/US20160356154A1

## CPC

- E21B 47/10: Locating fluid leaks, intrusions or movements
- E21B 49/08: Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B 49/10: using side-wall fluid samplers or testers
- G01F 1/10: using rotating vanes with axial admission
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME

## Abstract

A system and method of sensing fluid in a wellbore, where fluid along a range of radial locations in the wellbore is diverted along a flow path that runs adjacent a fluid sensor. Diverting the fluid from the range of radial locations provides a representative sample of the fluid flowing in the wellbore. Further, the diverted fluid forms a continuous volumetric flow past the fluid sensor to avoid fluid stagnation adjacent the fluid sensor. Diverting the fluid flow can be accomplished by elongate diverter wings attached at discrete circumferential locations around an outer surface of a fluid sensor and that project at oblique angles to the direction of flow. Elongate members can be used for diverting flow, where the distal ends of the elongate members attach to a downhole tool, and vane members span across selected adjacent members for directing flow to the sensor.

## Claims

### Claim 1

A downhole tool for monitoring fluid in a wellbore comprising;
a housing;
a fluid sensor in the housing;
a fluid diverter having a surface that extends along, a path that intersects the fluid sensor and which extends along a portion of a circumference of the housing.

### Claim 2 (depends on 1)

The downhole tool of claim 1, wherein the fluid diverter comprises an elongate member oriented generally oblique to an axis of the housing.

### Claim 3 (depends on 1)

The downhole tool of claim 1, further comprising additional fluid diverters that are spaced around the circumference of the housing, wherein the additional fluid diverters have surfaces that extend along paths that intersect with the fluid sensor.

### Claim 4 (depends on 3)

The downhole tool of claim 3, wherein the fluid diverters project radially outward into an annular space circumscribing the housing and at angularly spaced locations from one another, so that when a volume of fluid flows in the annular space, a representative potion of the volume of fluid is diverted to the fluid sensor by the fluid diverters.

### Claim 5 (depends on 1)

The downhole tool of claim 1, further comprising elongate spring members having ends that couple with the housing, and wherein the fluid diverter mounts between the spring members.

### Claim 6 (depends on 1)

The downhole tool of claim 1, wherein the sensor is disposed in a cavity within the housing.

### Claim 7 (depends on 6)

The downhole tool of claim 6, wherein an inlet is formed through a side of the housing and adjacent a downstream end of the fluid diverter, and wherein an outlet is formed through a side of The housing on an end of the cavity distal from the inlet.

### Claim 8 (depends on 7)

The downhole tool of claim 7, wherein the fluid sensor is disposed proximate the outlet.

### Claim 9 (depends on 6)

The downhole tool of claim 6, further comprising a strainer in the cavity and upstream of the fluid sensor.

### Claim 10

A downhole tool for monitoring fluid in a wellbore comprising:
a housing having a sidewall, an inlet formed in the sidewall, and an outlet formed in the sidewall and spaced axially away from the inlet;
a cavity in the housing in communication with the inlet and the outlet;
a fluid sensor in the cavity disposed proximate the outlet;
a planar fluid diverter having an upstream end spaced radially outward from the housing,
a downstream end disposed proximate the inlet, and a diverter surface that faces the housing, so that when the downhole tool is disposed in the wellbore and a volume of wellbore fluid flows past the housing, at least some of the volume of wellbore fluid flows along the diverter surface and to the fluid sensor.

### Claim 11 (depends on 10)

The downhole tool of claim 10, further comprising elongate spring members having ends coupled to the housing at axially spaced apart locations, and wherein lateral sides of the fluid diverter mount to the spring members.

### Claim 12 (depends on 10)

The downhole tool of claim 10, further comprising additional fluid diverters that each have an upstream end spaced radially outward from the housing, a downstream end disposed proximate the inlet, and a diverter surface facing the housing, so that when the downhole tool is disposed in the wellbore and a volume of wellbore fluid flows past the housing, at least some of the volume of wellbore fluid flows along the diverter surface and to the fluid sensor, and wherein the fluid diverters are angularly spaced around the housing so that the fluid being diverted to the fluid sensor is representative of the volume of fluid flowing in the wellbore.

### Claim 13 (depends on 10)

The downhole tool of claim 10, wherein the upstream end of the fluid diverter is disposed adjacent an outer radius of an annulus that circumscribes the housing.

### Claim 14

A method of sampling fluid within a wellbore comprising:
a. disposing a fluid sensor in the wellbore and in the path of a volume of flowing fluid;
b. diverting an amount of the volume of flowing fluid to the fluid sensor from a space that extends along a portion of the circumference of the wellbore; and
c. sensing the amount of the volume of the flowing fluid with the fluid sensor.

### Claim 15 (depends on 14)

The method of claim 14 wherein the amount of the volume of the flowing fluid is representative of the volume of flowing fluid in the wellbore.

### Claim 16 (depends on 14)

The method of claim 14 wherein the sensor is provided in a cavity of a downhole tool, the method further comprising directing the amount of the volume of the flowing fluid to an inlet on the downhole tool that is in fluid communication with the cavity and the fluid sensor.

### Claim 17 (depends on 14)

The method of claim 14, wherein the amount of the volume of the Bowing fluid is taken at multiple locations in the wellbore and that are angularly spaced apart from one another.

### Claim 18 (depends on 14)

The method of claim 14, wherein the fluid sensor is disposed in a horizontal portion of the wellbore.
