Skip to main content

Posts

Showing posts with the label Marcellus

Papers by Patzek et al. on US shale plays

I've been receiving recurring requests for the links to our publications on shales.  Thus, I have decided to put our shale story together, and update it in the future as the new papers are published. So far, this story consists of 29 papers and one patent published, and eight papers are pending.  Our goal is to describe the well-by-well histories and possible futures of all major US shale plays, starting from the earliest one, the Barnett. To achieve this goal, we have been using a physics-based scaling of individual well production and the generalized extreme value (GEV) statistics for spatio-temporal cohorts of wells.   As an aside, out of 15 or so, only  three of our paper submissions to the Society of Petroleum Engineers (SPE) conferences have been accepted since 2017, and we have given up on the SPE, of which I am a Distinguished Member with 38 years in the Society under my belt.  It is quite sad for me personally, but SPE has been in disarray for sev...

Is U.S. Shale Oil & Gas Production Peaking? Part I: Gas Production

Part I of this post shows my calculations of ultimate gas recovery from the Barnett, Fayetteville, Haynesville and Marcellus shales.  They might deliver 6-7 years of natural gas consumption in the U.S. in 2015, or might deliver only 3 years worth of U.S. gas consumption.  In Part II, I will show my calculations of ultimate recovery of oil and gas in the Eagle Ford and Bakken shales that ultimately might deliver 6-12 months of additional gas consumption.  I will also discuss the physical reasons for the negative impact oil production from these two shales has had on global oil prices. As Asjylyn Loder and others at Bloomberg have noted , another 19 billion dollars of debt of shale oil and gas producers is going into default as of the second week of March, 2016: Since the start of 2015, 48 oil and gas producers have gone bankrupt owing more than $17 billion, according to law firm Haynes and Boone. Fitch Ratings Ltd. predicts $70 billion of energy, metal and mining defa...

Natural gas versus coal

You and I use a lot of energy. Every second of each day and night we devour 100 times more energy than we need to live.  If I were to eat that much energy as food, I would be a 50-foot long bull sperm whale, weighing 40 tons.  There are 300,000 sperm whales worldwide, half of them bulls (females are much smaller), and 300,000,000 Americans (females are about the same in size).  Our Earth cannot feed and protect 300,000,000 male sperm whales.  She is simply too small. Our voracious appetite for energy must be either extinguished or quenched with local sources of energy (and, no, wind turbines and PV cells are too small to provide even single ample energy meal per day). So here are some of the choices we have:  We can drill and hydrofracture deep gas wells, and produce natural gas closer to where we live, or we can go after coal leftovers. We can also opt not to use fossil fuels and live differently, more Amish-like. For example, we can opt to live in the well-i...

Radioactivity in water and natural gas fracing

In this post I attempt to provide a context for an article in NYT, Drilling Down: Regulation Lax as Gas Wells’ Tainted Water Hits Rivers by IAN URBINA, published on February 26, 2011.  The article seems to imply that much of the potentially deadly radioactive contamination of drinking water supply in Pennsylvania comes from "frac water" produced after hydrofracturing the deep natural gas wells there.  Such an assertion is not supported by facts, and here is why. The raw data from the NYT spreadsheet, emailed to me by Mr. Urbina, are plotted here .  In the spreadsheet, there are up to five different measurements of radioactivity in the water produced from each of 212 natural gas wells in Pennsylvania.  Total alpha radiation refers to all alpha-particle-emitting radioisotopes present in the produced water.  In some wells there were additional measurements of alpha-radioactivity from two isotopes of radium and two isotopes of uranium.  By subtraction, the d...