Saudi Arabian Oil Company

Saudi Arabian Oli Company

Xiangyang Zhu

Mazen A Al-Saleh

Turki A Al-Khaldi

Anas S Rushaid

Mohammed A Al-Moniee

Mohammed A Moniee

Qurban Ali

An apparatus to simulate biocide performance in crude oil pipeline conditions is disclosed. The apparatus includes: a reactor to simulate a two-phase crude oil pipeline which includes a crude oil phase above a water phase. The reactor has an agitator to control a flow of the water phase in the reactor in response to a motor that drives an agitation rate of the agitator. A crude oil inlet supplies crude oil to the reactor for the crude oil phase. A water inlet supplies water to the reactor for the water phase. A control circuit is configured by code to control a proportion of the water to the crude oil supplied to the reactor and to control the motor to drive a desired agitation rate of the agitator. A biocide inlet supplies biocide to the reactor. A water sample outlet enables sampling of the water phase of the reactor.

Apparatus to simulate biocide performance in crude pipeline conditions

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 for detecting glutaraldehyde in a water sample in which Au-BSA nanoclusters have been introduced is provided. In the method, the water sample is mixed with the Au-BSA nanoclusters to form a mixture. The mixture is incubated for 2 to 10 minutes, and the glutaraldehyde present in the mixture reacts with the Au-BSA nanoclusters and causes fluorescence quenching of the Au-BSA nanoclusters. Then a fluorescence intensity of the quenched Au-BSA nanoclusters in the mixture is measured at an emission wavelength of 675 nm. A presence and concentration of glutaraldehyde in the water sample is then determined by comparing the measured fluorescence intensity of the quenched Au-BSA nanoclusters at the emission wavelength of 675 nm with fluorescence intensity values of calibration samples comprising Au-BSA nanoclusters and known glutaraldehyde concentrations.

Methods for detecting and quantifying glutaraldehyde-based products in water

The present application discloses methods for detecting and quantifying tetrakis(hydroxymethyl) phosphonium sulfate (THPS) in a water sample. In the methods, a water sample is mixed with a KMnOsolution to form a mixture. An intensity of KMnOabsorption in the mixture is then measured at a wavelength of 525 nm. The measured intensity is normalized by subtracting a background intensity at a wavelength of 650 nm. The presence and concentration of THPS in the water sample can then be determined by comparing the normalized intensity with intensity values of KMnOabsorption of calibration samples comprising KMnOand known THPS concentrations.

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Dhahran, Saudi Arabia

Xiangyang Zhu