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Hydrogen Sulphide and Denver City- Danger in the Oilfield

Updated on January 20, 2013

Arco's Willard Unit Well No. 66

Source

A Real Killer

Hydrogen Sulphide or H2S is a common oil field chemical problem. When you are drilling a well in certain areas this common chemical, not restricted to oil wells, may be encountered at any time so certain procedures are now followed to mitigate its impact. What is that impact you ask? Death! At 10 ppm (parts per million) this gas will begin to irritate the nasal passages and at 500 ppm one breath and you are dead.

On Sunday, February 2, 1975 in Denver City Texas a terrible tragedy occurred. In a peaceful neighborhood, Arco's Willard Unit Well No. 66 stood about 200 feet behind the Patton house. The morning was chilly, damp, foggy and nearly windless. At approximately 2:16 am and without warning H2S began to seep from the experimental gas injection well pipe connection on the well head. Being windless, this heavy gas stayed close to the ground and flowed out into the neighborhood heading a bit to the south. In its path lay nine people that would all find they had something in common that morning, very bad luck.

By 5:15 a.m.Sunday, Seven victims - Glenda Patton; her daughter Delores “Dee Dee”; their relatives, Edith and Alma Lee “Pete” Amerson, Evelyn and J.R. May; and Delores’ friend, Clara Peevy were dead. Five were in a running car and two were in a running pickup; Glenda’s husband, J.C., was lying on the ground nearby.

Their neighbor, Tom Merrill, had called to warn them of the chemical cloud that had made his wife ill and might be heading their way, but they suffocated seconds after rushing outside and straight into the cloud.

A ninth victim, 19 year old Steve Sparger, was an Atlantic Richfield Company pumper, who had gone to check on the well after hearing the alarm of a gas leak. He was found in his pickup in a ditch along County Road 330 suggesting that Sparger had driven into the cloud and was trying to turn around when he died.

By 1975, oil field workers had known for several generations about this "rotten-egg" gas and how it was possible to smother you in just a couple of breaths if concentrations were high enough. Oddly enough it could make you do crazy things like a raging drunk might do – if it didn't outright kill you.Hydrogen sulfide kills as it is uniquely lethal because it gets into your lungs and turns into a concrete-like substance, and the only treatment is for the victim to be treated in a hyperbaric chamber.

The public, however, seemed oblivious to this hydrogen sulfide until the "white hell" (as the Press depicted the cloud) killed nine innocent people in this small town just on the Texas - New Mexico Border.

Why did this happen? It was caused by a misapplication of 1 stainless steel nipple that was unsuitable for use on a well with 40,000 ppm of highly corrosive H2S.

So what has been the result? This disaster paved the way for many changes in Oil Field Safety Requirements and in public awareness of this silent killer.

Today the U.S. Environmental Protection Agency has identified 14 "major H2S-prone areas" in 20 states. Four of these areas are inTexas.

In 1975, there were no signs saying “Poison gas”. Today, Denver City is awash with warning signs, even some on lawns of fashionable homes. While the signs are so plentiful that it may be easy to start ignoring them and to grow complacent about this naturally occurring chemical, one can’t do that. Only Vigilance and Common Sense will save your life.

As a representative of my company T.I.H. Environmental, LLC, when I am out in the oil field I have to be constantly aware of my surroundings and the wind direction as I always want to park upwind. I must look for telltale signs that maybe this well or that well is an H2S site but the signs or socks are down or missing. I have to be aware of the smell, that strange rotten egg smell that mat be my only signal that I need to evacuate the premises. I have to wear my air monitor at all times. There is always the possibility for a problem.

Oil Field work is extremely hazardous, even for people like me who just have to do environmental reports.

For more information go to www.tihenvironmental.com and read the training article "Are You Prepared for an SPCC Plan Inspection?" http://tihenvironmental.com/Training.html



H2S gas being flared off in Texas

Source

H2S Flare in Eagleforde Shale

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    • profile image

      John Faulkner 

      4 years ago

      My father , Mike Faulkner and mother Beverly were going but we're delayed. I was 3 and my brother Steven Faulkner was 1. We talk of this often however I have not been to the memorial nor did I have the chance to get to know any of the victims. It is on my heart to learn more of them. So because our family is so small i don't have much information. So if there is anything anyone could share with me I would appreciate it.

    • profile image

      Apa-Guy 

      4 years ago

      So sorry to hear about this tragedy. I have pictures of the Willard Unit No. 66 well that did this to your family. This well is still being used as a C02 Injection well just outside of Denver City. I have recent pictures of what was left of the home and of the well. If you would like them email me at: riverag_769@msn.com

    • royblizzard profile imageAUTHOR

      royblizzard 

      6 years ago from Austin / Leander, Texas

      Hi oreo22cj, I grew up in Lovington NM and always hated going to Denver City because it smelled so bad. I had no idea then of the danger of H2S. I'm really sorry about your family. If more of these Oil companies would operate as if every life was worth more than $1.00, maybe there would be less tragedy in the Oilfield. Glad to hear about the memorial. We shouldn't forget.

    • profile image

      oreo22cj 

      6 years ago

      My Mother , Stepfather , Two Sisters , Two Brother n Laws and my Niece were killed in the Denver City , Tx H2S . A Memorial has since been set due to the efforts of Danice Pruitt in 2010 . Feb.2,1975 also my brothers birthday is a day we Will never forget !

    • Eiddwen profile image

      Eiddwen 

      7 years ago from Wales

      Interesting hub and I now look forward to reading more from you.

      Take care

      Eiddwen.

    • royblizzard profile imageAUTHOR

      royblizzard 

      7 years ago from Austin / Leander, Texas

      Absolutely Catherine. Over about 100ppm it becomes to toxic that it immediately becomes unsmellable as your nose sensors are paralyzed.

    • profile image

      Catherine French 

      7 years ago

      There are some concentrations of H2S that humans cannot smell it, but it will certainly knock them out. So smell is not always reliable.

    • Dave Mathews profile image

      Dave Mathews 

      7 years ago from NORTH YORK,ONTARIO,CANADA

      royblizzard: This sounds like something to stay far away from. Thank you for the warning.

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