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Workers were changing drill bit at time of rig explosion

CSB report: Safety measures failed in deadly rig

Investigators concluded the cause of the blowout was the failure of hydrostatic pressure buildup in preparation to change a drill bit and the failure

Driller in Oklahoma explosion that killed Colorado man, four

Ten workers have died over the past decade at well sites linked to drilling contractor Patterson-UTI, the same driller involved in this week''s rig explosion in Oklahoma

Driller in Oklahoma explosion that killed Colorado

Ten workers have died over the past decade at well sites linked to drilling contractor Patterson-UTI, the same driller involved in this week''s rig

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Patterson-UTI Drilling Company, LLC

On January 22, 2018, a catastrophic blowout and explosion killed five people 1 on Respondent''s oil rig located at Section 17-7N-18E, Quinton, Oklahoma ("Worksite"). The explosion occurred

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Twenty-two workers were at the well site at the time of the blast. The fatalities, ranging in age from 26 to 60, made their homes in Oklahoma, Texas and Colorado.

Rig Explosion Driller Has History of Fatal Accidents

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CSB Discusses Early Stages of Investigation into Fatal Gas Well

Drilling of the well in question began on Jan. 11, 2018. CSB learned that the rig crew was preparing to change out the drill bit at the time of the explosion; the crew had recently pulled

Quinton Gas Rig Explosion: Animated Timeline Released By

A safety agency just released an update on its investigation into the explosion at a Quinton gas rig that killed five men on January 22, 2018.

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CSB Factual Update: Pryor Trust Gas Well Drilling Rig Explosion

On January 21, 2018, Patterson-UTI crew members stopped drilling the well so they could remove the drill pipe and change the drill bit – a process known as "tripping." Between 7:57 – 8:35 a.m.

Warning signs preceded deadly well blowout, fire near

Another sign there was about to be a problem, the investigation shows, is that a Patterson-UTI crew member observed mud flowing out of the

Chemical board: Workers were changing drill bit at time of rig

The U.S. Chemical Safety Board said workers were preparing to change a drill bit at the time of the deadly Patterson 219 explosion.

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Quinton Gas Rig Explosion: Animated Timeline

Crews were in the process of changing out a drill bit which involved removing a drill pipe from the gas well. 8/1/2018 Related Story:

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Investigation shows gas flowed into well before deadly gas rig

The U.S. Chemical Safety Board (CSB)on Thursday released a factual update into its ongoing investigation of the January 22, 2018, blowout and fire at the Pryor Trust Gas Well

CSB report: Safety measures failed in deadly rig

The immediate cause of an explosion and fire that killed five workers on an Oklahoma drilling rig in January 2018 stems from the failure of

Update on the CSB''s Ongoing Investigation into the Fatal Gas

Drilling of 1H-9 began on January 11, 2018, and currently the CSB is unaware of any deviations from the original well plan. At the time of the incident, the rig crew had recently

Patterson-UTI Gas Rig Explosion Came During Drill Bit Change

Workers at an Oklahoma natural gas drilling site were getting ready to change a drill bit when five people were killed in a Jan. 22 explosion, the Chemical Safety Board said

Quinton Gas Rig Explosion: Animated Timeline

A safety agency just released an update on its investigation into the explosion at a Quinton gas rig that killed five men on January 22, 2018.

Driller in Oklahoma explosion has history of fatal accidents

Ten workers have died over the past decade at well sites linked to drilling contractor Patterson-UTI, the same driller involved in this week''s rig explosion in Oklahoma

Workers were changing drill bit at time of rig explosion [PDF]

3 FAQs about [Workers were changing drill bit at time of rig explosion]

Why did RMO pull the drillpipe out of the well?

At the time of the incident, the rig crew had recently pulled the drillpipe and associated drilling tools out of the well in preparation to change out the drill bit. Both RMO and Patterson-UTI have cooperated with the CSB’s investigation and promptly provided the well plan, daily drilling reports, and electronic rig data.

Did Csb drill a 1h-9 well?

Drilling of 1H-9 began on January 11, 2018, and currently the CSB is unaware of any deviations from the original well plan. At the time of the incident, the rig crew had recently pulled the drillpipe and associated drilling tools out of the well in preparation to change out the drill bit.

What does a drilling contractor do?

The drilling contractor, in this case Patterson-UTI Drilling Company, LLC (Patterson-UTI), brings the infrastructure (drilling rig) and supplies the workforce (rig crew) which operates the drilling rig. Consequently, the drilling contractor also has more direct control over the primary operations (drilling) and emergency response (well control).

Mining Drilling Rigs Inc.