Saudi Arabian Oil Company

Ali Abdullah Al-Yousef

Salah Hamad Al-Saleh

Ahmed Gmira

Subhash Chandrabose Ayirala

Hyung Tae Kwak

Ming Han

Dong Kyu Cha

A method for determining interfacial tension of a hydrocarbon in a brine fluid, the method including injecting a first brine fluid into a test cell, the first brine fluid having an initial ionic composition, injecting a hydrocarbon fluid into the test cell, contacting the hydrocarbon fluid with the first brine fluid, forming a droplet, measuring the interfacial tension of the hydrocarbon fluid in contact with the first brine fluid, at least partially displacing the first brine fluid with an inert gas, measuring a ionic composition salinity of the displaced first brine fluid in an ionic chromatograph, and comparing the measured ionic composition salinity to the initial ionic composition.

Method of measurement of interfacial tension (IFT) of two immiscible fluids at reservoir conditions: an in situ gas buffered injection

A method for determining a contact angle of a hydrocarbon on a rock surface, the method including injecting a first brine fluid into a test cell, the first brine fluid having an initial ionic composition, injecting a hydrocarbon fluid into the test cell, contacting the hydrocarbon fluid with the first brine fluid, forming a droplet, measuring the contact angle of the hydrocarbon fluid, at least partially displacing the first brine fluid with an inert gas, measuring a ionic composition of the displaced first brine fluid in an ionic chromatograph, and comparing the measured ionic composition to the initial ionic composition.

Method for screening EOR agents effects on reservoir rock wettability: an in-situ contact angle measurement

A system to measure a streaming potential of a core plug includes a measurement cell having a chamber to hold the core plug and an inlet fluid line connected to an inlet port of the measurement cell. A filtration device is arranged to control a salinity and ionic strength of a liquid medium received in the chamber through the inlet fluid line. The filtration device has membrane filters with different ion rejection rates and is controllable to selectively dispose each of the membrane filters in the inlet fluid line.

System and method for dynamic measurement of streaming potential in a core plug

The connectivity between different pore types in porous media is measured by using low-field nuclear magnetic (NMR) and fast field cycling NMR techniques. Due to the fluid exchange between connected pores, T(T) NMR relaxation times of proton nuclei of fluids in the different pore types are shifted. By comparing the T(T) NMR relaxation times of porous media samples which are 100% brine saturated with relaxation times for the samples containing brine and hydrocarbon in the different pore systems of the samples, the connectivity between the pores can be measured.

Measuring connectivity between different pore types in porous media

A method for increasing oil production in a carbonate reservoir by incorporating a diluted surfactant injection in conjunction with conducting a step-wise reduction of salinity of the injected salt water that is injected into the carbonate reservoir. The method provides for increased oil production as compared to conventional waterflooding techniques.

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Dhahran, Saudi Arabia

Ali Abdullah Al-Yousef