Welcome

• Introduce Yourself (Example Post)May 20, 2021
  This is an example post, originally published as part of Blogging University. Enroll in one of our ten programs, and start your blog right. You’re going to publish a post today. Don’t worry about how your blog looks. Don’t worry if you haven’t given it a name yet, or you’re feeling overwhelmed. Just click theContinue reading “Introduce Yourself (Example Post)”
• Introduce Yourself (Example Post)May 20, 2021
  This is an example post, originally published as part of Blogging University. Enroll in one of our ten programs, and start your blog right. You’re going to publish a post today. Don’t worry about how your blog looks. Don’t worry if you haven’t given it a name yet, or you’re feeling overwhelmed. Just click theContinue reading “Introduce Yourself (Example Post)”

Two Types Of Rocks And Highlighting How Oil Is Accumulated In Them


INTRODUCTION

The term “reservoir” in general terms means a pool or an accumulation of petroleum in porous rock formations buried several feet underground or subsurface.

The term “rock” from the standpoint of a reservoir means the natural container that contains or holds the petroleum spread out in tiny pore spaces of the rocks.

The term “fluid” generally means anything that flows from point A (subsurface location) to B (surface location) under a certain gradient and includes gaseous or liquid hydrocarbons.

The petroleum reservoir rock together with fluids makes up a system, which has a certain areal extent and depth and exists at given pressure and temperature conditions, which is explored and exploited commercially for production of petroleum.

Oil and gas reservoir rocks, are porous and permeable. They passageways of microscopic pores or holes that occupy the areas between the mineral grains of the rock. When oil and gas have been naturally expelled from source rocks, they enter or migrate into adjacent reservoir rocks. Most oil and gas reservoir rocks are sandstones, limestones, or dolomites.

The porosity and permeability of deep hydrocarbon reservoirs in basins are usually low. The deeper the reservoirs are, the smaller the porosity and permeability will be. In actual geological conditions, the porosity and permeability of deep effective reservoirs vary significantly. Research results indicate that the formation of deep-buried high-porosity and high permeability reservoirs is closely related to structural changes and evolution as well as fluid activities. In general, more faults and disconformities are developed in regions with stronger structural activities. Faults not only serve as pathways for hydrocarbon migration, but also improve the reservoir quality. Fault developed regions generally have favorable porosity and permeability.