Explorer Emphasis Article
By Barry Friedman
Lucia Torrado, had been here before – the AAPG Student Poster Competition, held yearly at the AAPG Annual Convention and Exhibition. But this year had a “vibe” to it.
American Association of Petroleum Geologists (AAPG)
Added on 01 June, 2017
Explorer Historical Highlights
By Raymond Pierson
The present day Cretaceous Codell oil and gas development in the central portion of the Denver Basin of Colorado can be attributed to an earlier effort in bringing the Codell to the attention of the industry.
American Association of Petroleum Geologists (AAPG)
Added on 01 May, 2017
Explorer Emphasis Article
By Emily Llinás
Offshore opportunities from Aruba to the Falkand Islands have national and independent companies keeping their eye on Latin America.
American Association of Petroleum Geologists (AAPG)
Added on 01 May, 2017
Middle East Blog
By Anastasia Kuzmenko
Mark your calendars! Don't miss out on this exciting GTW, which builds on the success of the first Carbonate Reservoirs of the Middle East GTW held in Abu Dhabi, UAE in 2015..
American Association of Petroleum Geologists (AAPG)
Added on 03 April, 2017
Explorer Historical Highlights
By Richard Bain
A few months after the founding of AAPG in early 1917, the first description of the Wolfcamp Formation was published in the University of Texas Bulletin No. 1753 titled “Notes on the Geology of the Glass Mountains” by J. A. Udden, on Sept. 20, 1917.
American Association of Petroleum Geologists (AAPG)
Added on 01 April, 2017
Explorer Emphasis Article
By David Brown
The Next 100 Years: Data management is a crucial component of oil exploration. What does the century ahead look like for Big Data in the oil field?
American Association of Petroleum Geologists (AAPG)
Added on 01 April, 2017
Middle East Blog
By Anastasia Kuzmenko
The GEO 2018 committee welcomes your abstracts for oral and poster presentations at the 13th Middle Geosciences Conference and Exhibition (GEO 2018) which will take place from 5 — 8 March in Bahrain. Submit today and join the largest gathering of geoscience professionals in the Middle East.
American Association of Petroleum Geologists (AAPG)
Added on 16 March, 2017
Explorer Emphasis Article
By Ken Milam
Last year, the extraordinarily high quality of the technical program was the talk of the AAPG Annual Convention and Exhibition in Calgary, and this was at an ACE with plenty of high points to talk about. The technical program for the 2017 ACE in Houston promises to be even better than last year’s.
American Association of Petroleum Geologists (AAPG)
Added on 01 March, 2017
Search and Discovery Article
By Cat Campbell,Mark H. Tobey
Rock-Eval hydrogen index (HI) is often used to compare relative maturities of a source horizon across a basin. Usually, there are
several
measurements from the source horizon at a single well, and the mean
hydrogen index is calculated, or the S2 is plotted against TOC. The slope
of the best fit line through that data is used as the representative HI for that well (sometimes referred to as the ‘slope HI
’ methodology). There
is a potential flaw in both these
methodologies; however, that renders the calculated HI as misleading if the source horizon being examined is
not relatively uniform in source quality, vertically in the stratigraphic column. From a geologic perspective, it would be unusual for the source
rock quality not to vary vertically in the stratigraphic column. Organic matter input, preservation, dilution, and sediment accumulation rate
typically vary in many depositional environments over the millions of years required to create a thick source rock
package. Nevertheless, there
are source rocks which do display remarkable source-quality uniformity from top to bottom of the stratigraphic package. We have examined
source rocks from several basins where the source quality is relatively uniform over the stratigraphic column, and source rocks where the
source quality varies greatly over the stratigraphic column. Methodologies to assess hydrogen index at specific wells for the
se two scenarios
differ. Most geoscientists may not be familiar with why a single technique is not suitable for both these scenarios, or how to correctly use
hydrogen index as a relative maturation proxy in the case where source rock quality is not uniform. We will demonstrate how to determine if
your source rock quality is uniform or varied relative to HI over the stratigraphic column, and how to assign a hydrogen index to the different
source facies when that source rock quality is not uniform. Further we will illustrate how to estimate the original hydrogen
index of the
different source facies and assign each a transformation ratio. The transformation ratio is a better proxy for relative maturity, since different
source facies may have different present-day hydrogen indices, but their present-day transformation ratio should be quite similar.
Show more
American Association of Petroleum Geologists (AAPG)
Added on 17 February, 2017