viscosity, length, pressure difference, and area. Before starting the measurement of permeability we should determine the length and diameter of the samples in order to get the Area by using Fractional Caliper device.
7.
During the third week of training, I have been placed in SCAl section. This section is responsible for measuring the Formation resistivity factor (capillary pressure), permeability of fluids (K_W), MICP, and CT scan
I stared the third week by measuring the permeability of fluids (K_W) this process is done by particular device which called PCRI, by using this device we can set the value of volumetric flow rate until we get satiable value of pressure with constant temperature. On the other hand, the viscosity of the fluids is measure using the Viscometer. After that Darcy law is applied to calculate the value of permeability. The Darcy law has certain limitations which have to be considered for example laminar flow, and homogenous. The idea behind this process is to determine the water and oil initial saturation.
Similarly, during the same week I also get a chance to work in MICP (mercury injection and capillary pressure), this task deal with high and low pressure (figure 2, appendix 2) also using the Archimedes principle which state that the body immersed in a fluid and buoyed up by a force. In order to get the whole volume of the sample using mercury, this process is used with a small size of samples.
Nevertheless, CT scan also was one of the tasks that assigned to me while working in SCAL section. The task include making videos of core sample, analyze the fractures, and the flow of fluids.
Another key thing to remember is flush cleaning which is also a part of SCAL section and one of the highlights task given to me during the internship. The flush cleaning is about using different solvents such as methanol (‘CH’_3 OH) and toluene ( C_7 H_8) to dissolve many organic compounds.
This process contain of two parts first to clean the sample from hydrocarbons using toluene and methanol, when the solvent is discolor that mean the sample is free of hydrocarbons, second part is to check the present
Of any salts in the sample by adding a drops of Silver Nitrate (‘AgNO’_3) if there is precipitation the sample is not clean properly.
For week four of this training another task was arranged for me, dean stark is one of the processes I worked on in fourth week. This process mainly talk about the percentage of oil and water present in the sample and how to extract it (figure 3, appendix 2).
Dean stark is one of the devices used specially to extract oil and water from samples. The solvent that is used for this process is pure toluene that has a boiling point of 110 C ”.
