# US 2014/0196893 A1 · Equipment and Methods for Deploying Line in a Wellbore

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- Number: US 2014/0196893 A1
- Document ID: US20140196893A1
- Status: Published application
- Kind: A1
- Application number: 14/127,166
- Filed: 2012-07-20
- Published: 2014-07-17
- Earliest claimed: 2011-07-21
- Assignees: Schlumberger Technology Corporation
- Applicants: Services Petroliers Schlumberger
- Inventors: Pierre Vigneaux
- Web page: https://patentgrep.com/patent/US20140196893A1

## CPC

- E21B 23/14: for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
- C09K 8/72: Eroding chemicals, e.g. acids
- E21B 23/08: Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
- E21B 47/06: Measuring temperature or pressure
- E21B 47/12: Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B 47/135: using light waves, e.g. infrared or ultraviolet waves
- G02B 6/44: Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables (cables incorporating electric conductors and optical fibres {where features relating to the optical fibres are not of interest} H01B11/22)
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

Many wellbore service operations involve placing a line in the wellbore. The line may be used to transmit power to downhole tools, convey signals from downhole-measurement instruments, or both. A problem associated with such operations involves drag forces experienced by the line as process fluids flow through the well, particularly the interior of a tubular body such as casing. The drag forces may cause the line to fail. Magnetizing the line solves this problem. During deployment, the line will migrate and become attached to the casing. Drag forces are significantly reduced because the line is no longer surrounded by moving fluid.

## Claims

### Claim 1

A system for deploying a line in a subterranean wellbore, comprising:
(i) a tubular body;
(ii) a device that travels through the interior of the tubular body;
(iii) a first apparatus for dispensing line, comprising a first reel of line;
(iv) a second apparatus for dispensing line, comprising a second reel of line, wherein the line wound around both the first and second apparatuses is one continuous line, the line being a signal-conveyance medium comprising at least one electrical conductor or at least one optical fiber, or both;
(v) a protective jacket surrounding the line, comprising magnetizable particles; and
(vi) means for magnetizing the particles.

### Claim 2 (depends on 1)

The system of claim 1, wherein the magnetizable particles are ferromagnetic.

### Claim 3 (depends on 1)

The system of claim 1, wherein the magnetizable particles comprise chromium (IV) oxide, cobalt, dysprosium, ferrite, gadolinium, gallium manganese arsenide, iron, magnetite, neodymium-boron, nickel, permalloy, samarium-cobalt, suessite, yttrium iron garnet, or combinations thereof.

### Claim 4 (depends on 1)

The system of claim 1, wherein the magnetizable-particle concentration in the protective jacket is between about 5% and about 66% by volume.

### Claim 5 (depends on 1)

The system of claim 1, wherein the thickness of the protective layer is between about 30 and about 75 micrometers.

### Claim 6 (depends on 1)

The system of claim 1, further comprising sensors distributed along the length of the line.

### Claim 7

A method for deploying a line in a subterranean well, comprising:
(i) selecting a continuous line, wherein the line comprises:
(a) a signal-conveyance medium comprising at least one electrical conductor or at least one optical fiber, or both; and
(b) a protective jacket surrounding the conveyance medium, comprising magnetizable particles;
(ii) magnetizing the particles in the protective layer;
(iii) attaching the line to a device that travels through a tubular body in the wellbore, and inserting both inside the tubular body;
(iv) pumping a process fluid into the wellhead, releasing the device, and allowing the device to begin traveling through the tubular body; and
(v) continuing to pump process fluid, allowing the line to extend and become magnetically attached to the tubular body as the device travels through the tubular body.

### Claim 8 (depends on 7)

The method of claim 7, wherein the magnetizable particles are ferromagnetic.

### Claim 9 (depends on 7)

The method of claim 7, wherein the magnetizable particles comprise chromium (IV) oxide, cobalt, dysprosium, ferrite, gadolinium, gallium manganese arsenide, iron, magnetite, neodymium-boron, nickel, permalloy, samarium-cobalt, suessite, yttrium iron garnet, or combinations thereof.

### Claim 10 (depends on 7)

The method of claim 7 wherein the magnetizable-particle concentration in the protective jacket is between about 5% and about 66% by volume.

### Claim 11 (depends on 7)

The method of claim 7, wherein the thickness of the protective layer is between about 30 and about 75 micrometers.

### Claim 12 (depends on 7)

The method of claim 7, wherein the device is a plug, dart, ball, bomb, sonde or canister.

### Claim 13 (depends on 7)

The method of claim 7, wherein the line comprises one or more strands, each strand able to operate independently.

### Claim 14 (depends on 7)

The method of claim 7, wherein the device contains one or more instruments that measure one or more parameters in the group consisting of temperature, pressure, distance, pH, density, resistivity, conductivity, salinity, carbon dioxide concentration and asphaltene concentration.

### Claim 15 (depends on 7)

The method of claim 7, wherein the line delivers power to tools that emit energy in the form of one or more types in the group consisting of electricity, heat, acoustic waves, magnetic fields, microwaves, gamma rays, x-rays and neutrons.

### Claim 16

A method for performing measurements in a subterranean well, comprising:
(i) selecting a continuous line, wherein the line comprises:
(a) a signal-conveyance medium comprising at least one electrical conductor or at least one optical fiber, or both; and
(b) a protective jacket surrounding the conveyance medium, comprising magnetizable particles;
(ii) magnetizing the particles in the protective layer;
(iii) attaching the line to a device that travels through a tubular body in the wellbore, and inserting both inside the tubular body;
(iv) pumping a process fluid into the wellhead, releasing the device, and allowing the device to begin traveling through the tubular body;
(v) continuing to pump process fluid, allowing the line to extend and become magnetically attached to the tubular body as the device travels through the tubular body;
(vi) measuring one or more parameters selected from the group consisting of temperature, pressure, distance, pH, density, resistivity, conductivity, salinity, carbon dioxide concentration and asphaltene concentration; and
(vii) transmitting the measurements through the line.

### Claim 17 (depends on 16)

The method of claim 16, wherein the magnetizable particles are ferromagnetic.

### Claim 18 (depends on 16)

The method of claim 16, wherein the device is a plug, dart, ball, bomb, sonde or canister.

### Claim 19 (depends on 16)

The method of claim 16, wherein the device contains one or more instruments that measure one or more parameters in the group consisting of temperature, pressure, distance, pH, density, resistivity, conductivity, salinity, carbon dioxide concentration and asphaltene concentration.

### Claim 20 (depends on 16)

The method of claim 16, wherein the line delivers power to tools that emit energy in the form of one or more types in the group consisting of electricity, heat, acoustic waves, magnetic fields, microwaves, gamma rays, x-rays and neutrons.