Method for the isobaric transfer of a fluid from a deposit and device for implementing such a method

Patent metadata

Field	Value
Publication number	US-10132766-B2
Application number	US-201314390480-A
Country	US
Kind code	B2
Filing date	Apr 8, 2013
Priority date	Apr 6, 2012
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

The invention relates to method for transferring under pressure a fluid extracted from the deposit by means of a sampling vessel ( 5 ) wherein the fluid sample is maintained at the reservoir pressure or extraction pressure, as well as to the method for determining at least one thermodynamic characteristic of this fluid, particularly a method for determining phase transition envelops. The invention also refers to a method combining the implementation of the scanning thansitiometry with spectroscopic or analytical techniques, eventually in the presence of a fluid in a supercritical state. The invention similarly refers to a device for implementation of the above-referred methods.

First claim

The invention claimed is:

1. A method for transferring under pressure a fluid from a deposit, by means of a sampling vessel wherein a fluid sample is maintained at a reservoir pressure (RP) and said method comprising the following steps:
a) measuring by a measuring device, in the absence of contact with the fluid sample, the pressure of the fluid sample maintained at reservoir pressure (RP) in the sampling vessel;
b) connecting the sampling vessel to the measuring device, maintained closed and at the reservoir pressure of the measuring device;
c) filling the measuring device with a second neutral liquid fluid with a known density and greater than the density of the fluid from the deposit;
d) increasing the pressure in the measuring device and the pressure of the second neutral liquid fluid, up to a pressure equal to the pressure of the fluid sample from the deposit determined during the step (a);
e) increasing the pressure of the fluid sample from the deposit contained in the sampling vessel to a pressure greater than the pressure of the second neutral liquid fluid contained in the measuring device;
f) transferring simultaneously, all or part, of the fluid sample from the deposit from the sampling vessel to a measuring cell, by balancing the pressures of the sampling vessel and the measuring cell; and a volume equivalent to the second neutral liquid fluid, of the measuring cell to the sampling vessel;
g) disconnecting the sampling vessel, measuring the density of the second neutral liquid fluid transferred into the sampling vessel, to a constant pressure in the absence of contact with the fluid sample from the deposit; and
h) calculating the volume of the sample of the fluid from the deposit, displaced and introduced in the measuring cell.

2. The method according to claim 1 , wherein the fluid from the deposit is crude oil comprising an asphaltene phase.

3. The method according to claim 1 , comprising step (e) for increasing the pressure of the sample extracted from the deposit contained in the sampling vessel up to a pressure greater than 5 MPa to 7 MPa of the pressure of the second neutral liquid fluid contained in the measuring device.

4. The method according to claim 1 , comprising heating the fluid sample from the deposit in the sampling vessel or in the measuring cell at the reservoir temperature (RT) of the deposit.

5. A method for determining at least one thermodynamic characteristic of said fluid from the deposit comprising the transfer of a sample of the fluid from the deposit according to claim 1 and step (i) for determining at least one thermodynamic characteristic of the fluid extracted from the deposit by means of a measuring cell adapted to carry out the determination of at least one such thermodynamic characteristics.

6. The method according to claim 5 , for determining at least one thermodynamic characteristics selected among a thermophysical or thermomechanic characteristic, a phase transition envelope, bubble pressure, titration, compressibility and thermal expansion.

7. The method according to claim 5 , during which the thermodynamic characteristic is determined by a variation of a first parameter selected among pressure (P), temperature (T) or volume (V), based on a second parameter, maintaining constant a third parameter.

8. The method according to claim 1 , comprising the implementation of
one or various elements selected from the group consisting of probes, optical fibers or other means for connecting spectroscopic measure or analytical sensors and a plurality of said sensors, such as infrared sensors, ultra-violet spectroscopic sensors or mass spectroscopy sensors; or
miniature capillaries or micro-capillaries and the injection of at least a fluid of an alkane (particularly pentane, hexane or heptane) or the injection of at least one fluid in a supercritical state selected from the group consisting of nitrogen in supercritical state, CO 2 in a supercritical state, and methane in a supercritical state; or
an inside stirring system of the measuring cell.

9. A transfer device at a reservoir pressure (RP) of a sample of fluid extracted from a deposit comprising:
a measuring device with thermodynamic characteristics comprising at least a measuring cell, a reference cell, heating devices and devices to increase or decrease the pressure in the measuring and reference cells;
an immobile sampling vessel connected to said measuring cell, and comprising a compression liquid and placed at a height less than the height of the measuring cell;
a first reservoir (R 1 ) of a liquid and neutral compression fluid compared with the fluid sample extracted from the deposit, said first reservoir connected to said measuring cell;
a means to increase the pressure in the sampling vessel;
a pressure equilibrium device in the measuring cell and in the sampling vessel;
a second reservoir (R 2 ) of liquid and neutral fluid compared with the sample of fluid extracted from the deposit, said liquid and neutral fluid is placed at a height greater than the height of the first reservoir (R 1 ) of the compression fluid, said second reservoir connected to said measuring cell; and
ducts connecting the sampling vessel, the reservoirs (R 1 , R 2 ) and the measuring cell.

10. The device according to claim 9 , comprising a heating device of the sampling vessel.

11. The device according to claim 9 , wherein the sampling vessel comprises
a compartment connected by a duct to the measuring cell being able to receive the sample of the fluid extracted from the deposit and that will be transferred; and
a compartment connected by a duct to a weighing member that is able to receive the compression liquid.

12. The device according to claim 9 , wherein the sampling vessel comprises two compartments divided by a mobile wall in translation along a longitudinal axis (X) of the sampling vessel.

13. The device according to claim 9 , wherein the measuring cell is a transitiometer.

14. The device according to claim 9 , further comprising:
one or various elements selected from the group consisting of probes, optical fibers or other devices for connecting spectroscopic measure or analytical sensors and a plurality of said sensors, such as infrared sensors, ultra-violet spectroscopic sensors or mass spectroscopy sensors; or
miniature capillaries or micro-capillaries and the injection of at least a fluid of an alkane selected from the group consisting of pentane, hexane and heptane or the injection of at least one fluid in a supercritical state selected from the group consisting of nitrogen in supercritical state, CO 2 in a supercritical state and methane in a supercritical state; or
an inside stirring system of the measuring cell.

15. The device according to claim 9 , wherein the sampling vessel comprises a first compartment provided with an exit connected by a duct to the measuring cell and a second compartment provided with an exit connected by a duct to a weighing member.

16. The device according to claim 15 , wherein the weighing member is connected by a duct only to a compartment of a compression liquid of the sampling vessel.

17. The device according to claim 9 , wherein the neutral fluid and a compression fluid are identical.

18. The device according to claim 17 , wherein the neutral fluid and the compression fluid are identical and are made of mercury.

19. The device according to claim 9 , further comprising:
a titration device of the fluid extracted from deposit;
ducts connecting this titration device to the measuring device.

Assignees

• Mexicano Inst Petrol
• Univ Blaise Pascal—Clermont Ii

Inventors

• Grolier Jean-Pierre
• Randzio Stanislaw
• Aquino-Olivos Marco Antonio

Classifications

• H01J49/0027

  Methods for using particle spectrometers · CPC title

• E21B49/083

  Samplers adapted to be lowered into or retrieved from a landing nipple, e.g. for testing a well without removing the drill string · CPC title

• G01L9/00

  Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements {(G01L11/004 takes precedence)}; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means (measuring differences of two or more pressure values G01L13/00; measuring two or more pressure values simultaneously G01L15/00) · CPC title

• G01N33/2823

  Raw oil, drilling fluid or polyphasic mixtures · CPC title

• G01F17/00

  Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies (measuring linear dimensions to determine volume G01B) · CPC title