What are the four types of oil traps?

The most common oil traps are: structural (anticlines, faults, salt dome) and stratigraphic traps (pichout, lens and unconformity traps -see Fig. 1). The poor quality, or lack of a cover- rock, allows the oil to escape and reach the surface (Macgregor, 1993).

What is trap in oil field?

1. n. [Geology] A configuration of rocks suitable for containing hydrocarbons and sealed by a relatively impermeable formation through which hydrocarbons will not migrate.

What is anticline and fault traps?

Sedimentation and Oil/Gas Formation 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 components to form oil trap?

1) Porous, permeable reservoir rock that will contain quantities of oil and gas that make it worth drilling. 2) Impermeable cap rock that traps oil and gas preventing it from escaping to the surface.

What are two structural traps examples?

Structural Trap Structural traps are the most important type of trap as they represent the majority of the world’s discovered petroleum resources. The three basic forms of structural traps are the anticline trap, the fault trap and the salt dome trap.

What is salt dome trap?

A salt dome trap is an area where oil has been trapped underground by salt pushing upward. A salt dome trap is where a mass of salt from deep in the Earth’s crust is pushed upward forming oil traps in a rock layer containing oil. Salt dome traps form where bodies of salt flow upward and pierce overlying rock layers.

Why are anticlines good oil traps?

Anticlines form a structural trap that can capture pockets of hydrocarbons in the bend of the arch. Impermeable rock beds, often referred to as seals or cap rock, trap hydrocarbons in the anticline peak. This causes oil and natural gas to build up in the pore spaces of the reservoir rock at the core of the arch.

What are the different types of traps?

Different types of Traps are as follow:

• Floor Trap or Nahni Trap. Floor trap or Nahni trap is provided in to the floor to collect waste water from bathroom, wash area, washbasin, and kitchen sink area etc.
• Gully Trap.
• P, Q and S-Trap.
• Intercepting Trap.
• Bottle Trap.

What are the two main types of petroleum traps?

There are two major categories of traps, and are classified based on how the petroleum accumulates. The two main groups are structural traps and stratigraphic traps. For a more in-depth description of the overall structure of oil and gas deposits, see oil and gas reservoir.

What does a typical salt dome look like?

A salt dome is a mound or column of salt that has intruded upwards into overlying sediments. Salt domes can form in a sedimentary basin where a thick layer of salt is overlain by younger sediments of significant thickness.

What lies at the top of a salt dome?

The caprock above the salt domes is sometimes the site of deposits of native sulfur, which is recovered by the Frasch process.

Are oil and gas always found together?

As a consequence, oil and natural gas are often found together. In common usage, deposits rich in oil are known as oil fields, and deposits rich in natural gas are called natural gas fields. The technology to extract and transport offshore natural gas is different from land-based fields.

What are the different types of oil and gas traps?

Oil and gas traps. There are two major categories of traps, and are classified based on how the petroleum accumulates. The two main groups are structural traps and stratigraphic traps. For a more in-depth description of the overall structure of oil and gas deposits, see oil and gas reservoir .

How are structural and stratigraphic petroleum traps formed?

Two types of petroleum traps are; structural and stratigraphic. Structural traps are formed by deformation of reservoir rock, such as by folding or faulting. Stratigraphic traps are formed by deposition of reservoir rock, such as river channel or reef, or by erosion of reservoir rock, such as an angular unconformity

What are the three types of structural traps?

The three basic forms of structural traps are the anticline trap, the fault trap and the salt dome trap. An anticline is an area of the subsurface where the strata have been pushed into forming a domed shape.

What causes an oil trap in a reservoir?

These types of traps are formed when reservoir rock is split along a fault line. Between the walls of the split reservoir, clay traps oil and prevents it from leaving the trap. Other times there exists a pressure differential across the two sides of the fault that prevents the fluids from migrating.