Flow loop experiments to study gas hydrate formation in gas-water-oil systems

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Flow loop experiments to study gas hydrate formation

in gas-water-oil systems

Vinicius R. de Almeida, Ana Cameirao, Jean-Michel Herri, Emilie Abadie,

Philippe Glenat

To cite this version:

Vinicius R. de Almeida, Ana Cameirao, Jean-Michel Herri, Emilie Abadie, Philippe Glenat. Flow loop experiments to study gas hydrate formation in gas-water-oil systems. Journée Scientifique 2019 du Codegepra, Nov 2019, Villeurbane, France. Journée scientifique CODEGEPRA SFGP SudEst -Le Génie des Procédés en Auvergne-Rhône-Alpes et Provence-Alpes-Côte d’Azur, pp.21 / P10., 2019. �hal-03188092�

Flow loop experiments to study gas hydrate formation in gas-water-oil

systems

V. Almeida

1

, A. Cameirão

1

, J-M. Herri

1

, E. Abadie

2

and P. Glenat

2

1

_{Mines Saint-Etienne, Univ. Lyon, CNRS, UMR 5307 LGF, Centre SPIN, Departement PEG, F - 42023 Saint-Etienne France}

2

_{TOTAL S.A., CSTJF, Avenue Larribau, Pau Cedex 64018, France}

Introduction

Objectives:

 Study the influence of GLL flow pattern on

hydrate formation and plugging

 Detect agglomeration and deposition over

time and space

 Test an anti-agglomerant additives

Conclusions

Experimental methodology and results

Operational conditions:

 100-500 L/h

 Up to 75 bar

 0-30 °C

 ~53m

 Water, oil, gas, salt, AA

Perspectives

 Compare acoustic emission and permittivity measurements

with high speed imaging to identify flow patterns.

 Test an AA additive at high water cuts.

 Understand

better

the

mechanisms

of

hydrates

transportability and plugging tendencies.

Context

 Formation of gas hydrates in oil and gas

pipelines

 Acoustic emission may help characterize the flow pattern and track

growth and deposition.

 For systems with well dispersed hydrates, some indications confirm

that the absolute energy is proportional to the hydrates fraction.

 Evidence that phase inversion may partially occurs (tests with 50%

and 80% water cut).

Gas

Water

Oil

Hydrate

Acoustic Emission

Detection Instrument

Sensor

Signal

Acoustic emission

Figure 3 - Hydrate particles morphology.

Figure 4 - Typical hydrate formation pressures and

temperatures in subsea flow line (Sloan et al. 2011).

Figure 2 – Hydrates removed from a

pipeline during a cleaning operation.

Figure 1 - Cage S1

(WordPress, 2018).

Particle video microscopy

Focused beam reflectance measurement

Figure 8 - Detection of hydrate particles flowing in the pipe using

acoustic emission measurement

(30% water cut, 200 L/h, 30 g/L of NaCl).

Temperature (K)

Pr

essur

e (MPa)

1050 µm

8

50

µm

High speed imaging

Archimedes flowloop

Figure 5 – Overview of a experiment with hydrate formation

(30% water cut, 200 L/h, 30 g/L of NaCl).

Figure 6 – Pressure drops measurements for a crystallization test

(30% water cut, 200 L/h, 30 g/L of NaCl).

Figure 9 - Detection of continuous phase using dielectric measurement

(30% water cut, 200 L/h, 30 g/L of NaCl).

Figure 7 - Detection of hydrate chord length distribution using the FBRM

(30% water cut, 200 L/h, 30 g/L of NaCl).

Real part (dielectric)

Imaginary part (conductivity)

Frequency [Hz]

Re

la

ti

ve perm

it

ti

vity

[

-]

Permittivity probe