Saudi Arabian Oil Company

Anas S Rushaid

Turki A Al-Khaldi

Xiangyang Zhu

Radwan Bakor

Naim M Dakwar

Ebadul Z Al Haque

Balasubramani Bakthavatchalu

Abduljalil Al-Rasheed

Mohammed A Alrudayni

An apparatus for in-situ monitoring and measuring of general corrosion and localized microbiologically influenced corrosion (MIC) in a simulated environment is provided. The apparatus includes a chamber containing an electrolyte solution and a microbe specimen. The chamber includes a pair of electrical resistance (ER) probes that measure a current flowing through the electrolyte solution and a general corrosion rate on the surface of the ER probes. The chamber also includes a pair of electrochemical noise (EN) probes. The EN probes are aligned to face one another such that the EN probes measure a localized corrosion rate on the surface of the EN probes and measure the influence of gravity on MIC. The apparatus measures the general and localized corrosion rates simultaneously without polarizing the surface of the ER and EN probes.

Apparatus for in-situ monitoring of general corrosion and localized microbiologically influenced corrosion (MIC)

A method and a system for creating a reference standard for hydrogen sulfide concentrations in crude oil are described. The method includes receiving a volume of crude oil in a vessel. A hydrogen sulfide gas is flowed from a pressurized gas cylinder to the vessel to form a hydrogen sulfide gas-crude oil mixture. The hydrogen sulfide gas continues to flow from the pressurized gas cylinder to the vessel at a set pressure for a predetermined time to adjust the hydrogen sulfide concentration in the hydrogen sulfide gas-crude oil mixture to a hydrogen sulfide threshold concentration. The flow of the hydrogen sulfide gas into the vessel is stopped.

Creating a hydrogen sulfide crude oil reference standard

A system, apparatus, and method for analyzing cathodic protection (CP) current shielding of a coating are provided. The system includes: a test cell configured to have a coating film disposed therein and to be filled with electrically conductive solution surrounding the coating film; an electrical resistance (ER) probe mounted through a port of the test cell; and a potentiostat configured to: apply potential to the test cell to thereby polarize a sensing element of the ER probe such that the ER probe is configured to measure data indicative of a corrosion rate of the sensing element when the coating film is disposed within the test cell and while a CP current flows through the sensing element; and measure a current density through the sensing element in order to indicate an extent of CP current shielding of the coating film.

System and method for analyzing cathodic protection current shielding of a coating

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Khobar, Saudi Arabia

Anas S Rushaid