Astronomy

 

Select an astronomical object. This may include a specific object (examples: the planet Venus, the Andromeda galaxy) or a class of objects (examples: black
holes, comets, dark matter). Create a discussion reply with the name of the object as the first line in the response. (Students may not post a reply for an
astronomical object that has already been posted by another student—so read the replies in the discussion carefully before posting.) In your post, compose a
paragraph or two and include the following:

The name of the object.
A description including such points as: origin, formation, composition, important related processes, etc.
Where it is found, and how it is that we know about it (how is it seen, sampled, detected, etc.)
A discussion of its value or significance to us. In other words—why should we care about your object.
Feel free to include an image of your object (not required).
Include the names and sources of the materials you used to find the information you used in your post.

and permeability, Formation Resistivity Factor ( capillary pressure) (appendix 2), permeability of fluids, flush cleaning using different solvents, and finally the dean stark which is about extraction of oil and water.

Consequently, the first week of training was about introduction to the company programs and services as well as the devices and process used in the laboratory.
Second week I started with the first task in CCA section which required the measurement of porosity by using DHP device (figure1). This task contain all the impotent measurements and calculation in porosity by using Boyle’s law (appendix, 1), also exporting the data in excel sheet to determine the capacity of core to hold fluids, and analyze the graphs with different behaviors (figure 1, appendix 2). Besides that, I also get a chance to use the VINCI device (figure 2) which is used for unsteady state process to get knowledge in how to determine several parameters in more accurate way such as porosity, permeability, pore volume, and bulk volume by sitting the pressure.

Moreover, the instrument calculate the pore volume and porosity by using the ideal gas law, also the pressure applied to the core is generated by high accurate hydraulic pump.
Nevertheless, in the same week I worked using DGP device (figure 3) which is specific for permeability measurement. The main factor of permeability is Darcy law (appendix 1), the important parameters of Darcy law are volume flow rate, 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

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