What is an active petroleum system?
A petroleum system encompasses a pod of active source rock and all genetically related oil and gas accumulations. It includes all the geologic elements and processes that are essential if an oil and gas accumulation is to exist.
What are the four basic components of a petroleum system?
The Petroleum System consists of a mature source rock, migration pathway,reservoir rock, trap and seal. Appropriate relative timing of formation of these elements and the processes of generation, migration and accumulation are necessary for hydrocarbons to accumulate and be preserved.
What are the petroleum system elements?
The petroleum system concepts links accumulations of hydrocarbons to a source rock, thus placing emphasis on the origin of the hydrocarbons. The elements of a petroleum system include a source rock, reservoir, trap and seal. Geological processes involved are trap formation and generation-migration-accumulation.
What is petroleum system chart?
A petroleum system events chart shows time on one axis and the essential elements and processes on the other. The time required for the generation–migration–accumulation process is the same as the age of the system. The chart also shows the preservation time and critical moment for the system.
What is a working conventional petroleum system?
The essential ingredients of a working petroleum system are: trap, reservoir, seal and charge. No hydrocarbon accumulation can be present if at the location of a prospect any of these is missing (Fig. In unconventional petroleum systems, hydrocarbons are not limited to conventional structural or stratigraphic traps.
What are anticlines and fault traps?
An anticline is a structural trap formed by the folding of rock strata into an arch-like shape. The rock layers in an anticlinal trap were originally laid down horizontally and then earth movement caused it to fold into an arch-like shape called an anticline.
What are the types of petroleum seals?
In the petroleum system, there are two important classes of seals: regional seals that roof migrating hydrocarbons and local seals that confine accumulations. Major roofing seals act to confine migrating hydrocarbons to particular stratigraphic units. Any lithology can serve as a seal for a hydrocarbon accumulation.
What are the four major components of a conventional hydrocarbon system?
Conventional hydrocarbon reservoirs consist of three main parts: the source rock, the reservoir rock, and the cap rock (Figure 1). The source rock is the rock that contains the kerogen that the oil and gas forms from. The reservoir rock is the porous, permeable rock layer or layers that hold the oil and gas.
What is petroleum system analysis?
The petroleum system is a unifying concept that encompasses all of the disparate geological or geochemical elements and processes of petroleum geology. Oil and gas fields will not be formed if any of the elements or processes of the petroleum system are missing.
What is the difference between conventional and unconventional wells?
The difference between the two is the cost of getting the barrel to the surface. The conventional oil drilling process includes the drilling of a well, a reservoir having pressure and oil flowing out of the ground. Unconventional oil drilling is a much more expensive process than conventional oil drilling.
What is the difference between conventional and unconventional?
By definition, the word conventional means to conform, or adhere to accepted standards. So unconventional would be to not conform to these standards or not be bound to the conventional rule.