Petroleum Traps part 1

In addition to the requirement that source rock exists for the generation of hydrocarbons, and that reservoir rock exists for the storage and production of the generated hydrocarbons, traps must also exist to trap, or seal, the hydrocarbon in place forming a hydrocarbon reservoir. The fluids of the subsurface migrate according to density. As previously …

Well Logs

by Ahmed Imad   Well log is a continuous record of measurement made in bore hole respond to variation in some physical properties of rocks through which the bore hole is drilled. Traditionally Logs are display on girded papers shown in figure1. Now a days the log may be taken as films, images, and in digital …

Completion Techniques

completion

    by Abass Radhi Abbas 1.General Communication between the formation and the wellbore will directly affect the productivity of the well. Factors such as hydrocarbon saturation, porosity, permeability, fluid properties and geometry can be measured or inferred from the measurements but they cannot usually be controlled. By contrast, completion can be controlled and thus …

Effective and Relative Permeability

Porosity

Mustafa AbdulSattar           When there is only one type of fluid flowing through porous media, the permeability for this case is called “absolute permeability.” However, when there is more than one type of fluids present in a rock, a permeability of each fluid to flow is decreased because another fluid will be moving in …

HSE in Drilling

HSE

An effective HSE program is characterized by no injury to people, no loss of property, and no harm to the environment. Great HSE performance is anindication of great leadership. It is much more than statistics, although measurements are necessary to facilitate performance improvement. HSE must be considered a core responsibility for all business participants, operators, …

Well Pressure Control

oil well

    Basically all formations penetrated during drilling are porous and permeable to some degree. Fluids contained in pore spaces are under pressure that is overbalanced by the drilling fluid pressure in the well bore. The borehole pressure is equal to the hydrostatic pressure plus the friction pressure loss in the annulus. If for some …

What is Crude Oil

crude oil

      Petroleum, meaning literally “rock oil,” is the term used to describe a myriad of hydrocarbon-rich fluids that have accumulated in subterranean reservoirs. (also called crude oil) varies dramatically in color, odor, and flow properties that reflect the diversity of its origin. Petroleum products are any petroleum-based products that can be obtained by …

Oil Well Drilling Pipe

    The major portion of drill string is composed of drill pipe. Drill pipe consists of three components: a tube with a pin tool joint welded to one end and a box tool joint welded to the other.       Before the tool joints are welded to the tube, the tube is upset, or forged, …