<
 
 
 
 
×
>
hide You are viewing an archived web page, collected at the request of University of Alberta using Archive-It. This page was captured on 16:24:49 Dec 08, 2010, and is part of the HCF Alberta Online Encyclopedia collection. The information on this web page may be out of date. See All versions of this archived page. Loading media information
Heritage Community Foundation Presents
Alberta Online Encyclopedia
SitemapSearchHelpContactPartnersEdukitsHome
Resource Inventory
History of Development
Innovation and New Technology Visit Alberta Source! Heritage Community Foundation
Heritage Trails presented courtesy of CKUA Radio Network Canada's Digital Collections

Home > Alberta's Resource Inventory > Hydrocarbons > Exploration > Oil and Gas Traps 

Resource Inventory

Oil and Gas Traps

Rock sample from the Canadian Petroleum Interpretive CentreIn a typical trap, gas accumulates on top of the reservoir as a gas cap over the oil leg which in turn overlies the water-saturated zone in the reservoir. This occurs because natural gas is lighter than oil which is lighter than water. However, all three fluids are often intermingled in parts of the reservoir. Porosity is the ability of a rock to hold oil and gas like water in a sponge. Permeability indicates how easily fluids can flow through the rock.

A trap requires three elements:

  • a porous reservoir rock to accumulate the oil and gas—typically sandstones, limestones and dolomites

  • an overlying impermeable rock to prevent the oil and gas from escaping

  • a source for the oil and gas, typically black waxy shales.

Petroleum Communication Foundation. Our Petroleum Challenge: Exploring Canada's Oil and Gas Industry, Sixth Edition. Calgary: Petroleum Communication Foundation, 1999. With permission from the Centre for Energy.

previous

   


Soil and AgricultureHydrocarbonsForests


Albertasource.ca | Contact Us | Partnerships
            For more on natural resources in Alberta, visit Peel’s Prairie Provinces.
Copyright © Heritage Community Foundation All Rights Reserved