What does pinch-out mean in geology?

1. n. [Geology] The termination by thinning or tapering out (“pinching out”) of a reservoir against a nonporous sealing rock creates a favorable geometry to trap hydrocarbons, particularly if the adjacent sealing rock is a source rock such as a shale.

What are the four types of oil traps?

Structural Traps

  • Anticline Traps. These types of traps are formed by a folding of rock.
  • Fault Traps. These types of traps are formed when reservoir rock is split along a fault line.
  • Salt Domes. Salt dome traps are formed as a result of below ground salt – which is less dense than the rock above it – moving upwards slowly.

How is Pinchout trap formed?

Pinch-out traps These trap styles are also common in extensional basins. Unlike fault traps, these traps are purely the result of deposition processes rather than structural ones. They form as a reservoir rock layer simply tapers off into a cap rock. Water will then force hydrocarbons into these traps from below.

What are the two types of hydrocarbon traps?

Traps can be of two types: stratigraphic or structural.

What is a pinch out gesture?

The pinch out (zoom in) gesture, which moves the two pointers away from each other, changes the target element’s background color to pink .

What is spill point?

In the context of a reservoir, spill point is in a trap, the low point under which hydrocarbons will escape when the trap is full.

What are anticlines and fault traps?

2.15. An anticline is a structural trap created through the folding of rock strata into an arch-like shape. The rock deposits in an anticlinal trap were formerly located down horizontally and then Earth movement created it to fold into an arch-like shape termed as an anticline.

What are the three types of petroleum traps?

Traps can be divided into three broad categories: structural traps, stratigraphic traps, and combination traps, which exhibit both structural and stratigraphic elements.

What is pinch in and pinch out?

pinch in/out. ​to place the thumb and a finger of one hand on the screen of a device such as a mobile phone or small computer and move them together or apart, to make the image or text on the screen appear smaller or larger. Pinch in on the home page. You can pinch out to zoom in on the map.

How do you do a pinch gesture?

Pinch-to-zoom refers to the multi-touch gesture that zooms in or out of the displayed content on a device with a touch screen. These devices include a smartphones and tablets. To use pinch-to-zoom, touch two fingers on the touch screen, and move them apart to zoom in, or together to zoom out.

What is reservoir trap?

A reservoir rock is created if a trapping mechanism is present and creates a place to contain the accumulated hydrocarbons. The trap consists of a roof rock, an impervious stratum, that overlies the reservoir rock and prohibits hydrocarbons from escaping upward or laterally.

What is fault trap?

A fault trap is a geological formation in which oil or gas in a porous section of rock is sealed off by a displaced, nonporous layer. A fault trap occurs when formations on either side of the fault move and lie in such a way that, when petroleum migrates into one of the formations, it becomes trapped there.

What are anticlines and synclines?

An anticline is a fold that is convex upward, and a syncline is a fold that is concave upward. An anticlinorium is a large anticline on which minor folds are superimposed, and a synclinorium is a large syncline on which minor folds are superimposed.

What does pinch up mean?

vb. 1 compress, grasp, nip, press, squeeze, tweak. 2 chafe, confine, cramp, crush, hurt, pain. 3 afflict, be stingy, distress, economize, oppress, pinch pennies, press, scrimp, skimp, spare, stint, tighten one’s belt.

What is Pan gesture?

A pan gesture occurs any time the user moves one or more fingers around the screen. A screen-edge pan gesture is a specialized pan gesture that originates from the edge of the screen. Use the UIPanGestureRecognizer class for pan gestures and the UIScreenEdgePanGestureRecognizer class for screen-edge pan gestures.

What is pinch and zoom?

What is an upward fold?

An upward fold is called an anticline, while a downward fold is called a syncline. In many areas it’s common to find a series of anticlines and synclines (as in Figure 12.5), although some sequences of rocks are folded into a single anticline or syncline.

What is synclines in geography?

Definition of syncline : a trough of stratified rock in which the beds dip toward each other from either side — compare anticline.

What does daft mean in British?

silly, foolish
Definition of daft 1 chiefly British, informal : silly, foolish Don’t do anything daft. 2 chiefly British, informal : mad, insane … he looks at me as if I were daft.— Johanna McGeary. 3 Scotland : frivolously merry.