High pressure / high temperature dynamic multiphase corrosion-erosion simulator

Patent metadata

Field	Value
Publication number	US-10539498-B2
Application number	US-201715680769-A
Country	US
Kind code	B2
Filing date	Aug 18, 2017
Priority date	Aug 18, 2017
Publication date	Jan 21, 2020
Grant date	Jan 21, 2020

Abstract

A system for measuring corrosion and corrosion-erosion rates in a high temperature, high pressure multiphase dynamic environment includes a plurality of ring-shaped test coupons disposed within a test vessel in a vertical arrangement relative to one another. A test fluid mixture is added to the vessel and the temperature and pressure are maintained such that the mixture exists in a multiphase condition that has a vertical stratification such that each test coupon is exposed to a different phase and/or combination of phases of the fluid. Impellers can be used to stir the fluid to provide a dynamic environment. The fluid can include particulate matter to simulate real world test conditions. Separator plates can be disposed at different vertical locations within the vessel to maintain separation between various phases of the fluids and further restrict particulate matter from migrating between sections of the test system.

First claim

What is claimed:

1. A high pressure, high temperature dynamic multi-phase testing system for testing corrosive and corrosive-erosive environments by providing a test fluid mixture that is at a different phase at different locations within the system and which is in surrounding relation to a plurality of ring-shaped test coupons, comprising:
a casing defining an inner section;
a plurality of spacer rings disposed vertically relative to one another and supported by the casing;
wherein at least a first, second, and third ring-shaped test coupons among the plurality of ring-shaped test coupons are each disposed between at least two of the plurality of spacer rings, wherein the first, second, and third ring-shaped test coupons are disposed at a respective an upper section, middle section, and lower section of the casing;
a plurality of separator plates, wherein one of the plurality of separator plates is disposed between the upper and middle section of the casing and another of the plurality of the separator plates is disposed between the middle and lower section of the casing;
a rotor shaft disposed within the housing and arranged to turn within the test fluids;
first and second impellers supported by the rotor shaft and positioned to stir the test fluids within the housing,
wherein the separator plates are configured to maintain a separation between each of the phases of the multi-phase test fluids so that each of the ring-shaped test coupons is exposed to a different phase or combination of phases of the test fluids.

2. The test system according to claim 1 , wherein one of the first and second impellers is disposed at the lower section of the casing to stir one phase of the test fluids, and wherein the other of the first and second impellers is disposed at the middle section of the casing to stir another phase of the test fluids.

3. The test system according to claim 1 , further comprising baffles supported by the casing and extending into the fluid, wherein the baffles are shaped and arranged to reduce vortex formation in the fluid within the casing.

4. The test system according to claim 1 , further comprising particulate matter disposed within the test fluid to simulate additional corrosion and corrosion-erosion conditions.

5. The test system according to claim 1 , further comprising a first particulate matter disposed within one phase of the test fluid and second particulate matter disposed within another phase of the test fluid.

6. The test system according to claim 5 , wherein the first particulate matter is sand and the second particulate matter is sulfur.

7. The test system according to claim 5 , wherein the separator plates are positioned to restrict migration of the first and second particulate matter from migrating between respective sections of the casing.

8. A method of performing high pressure, high temperature dynamic multi-phase testing system for testing corrosive and corrosive-erosive environments in a test vessel, comprising the steps of:
preparing a test system, the test system including:
a plurality of ring-shaped test coupons;
a casing defining an inner section;
a plurality of spacer rings disposed vertically relative to one another and supported by the casing;
wherein at least a first, second, and third ring-shaped test coupons among the plurality of ring-shaped test coupons are each disposed between at least two of the plurality of spacer rings, wherein the first, second, and third ring-shaped test coupons are disposed at a respective an upper section, middle section, and lower section of the casing; and
a plurality of separator plates, wherein one of the plurality of separator plates is disposed between the upper and middle section of the casing and another of the plurality of the separator plates is disposed between the middle and lower section of the casing;
a rotor shaft disposed within the housing and arranged to turn within the test fluids;
first and second impellers supported by the rotor shaft and positioned to stir the test fluids within the housing,

providing a test fluid mixture that is at a different phase at different locations within the system and which is in surrounding relation to the plurality of ring-shaped test coupons, wherein the separator plates are configured to maintain a separation between each of the phases of the multi-phase test fluids so that each of the ring-shaped test coupons is exposed to a different phase or combination of phases of the test fluids;
maintaining, for a period of time, a temperature and pressure within the test vessel, wherein the temperature and pressure simulate a severe environment; and
inspecting the plurality of ring-shaped test coupons for corrosive and corrosive-erosive effects.

Assignees

• Saudi Arabian Oil Co

Inventors

• Aljanabi Yahya T
• Al-Khaldi Turki A

Classifications

• G01N17/043

  Coupons · CPC title

• G01N17/04

  Corrosion probes · CPC title

• G01N17/002 Primary

  Test chambers · CPC title

• G01N17/046 Primary

  Means for supporting or introducing coupons · CPC title

• G01N2203/0226

  High temperature; Heating means · CPC title