JFE set plug at surface while guns/plug were at surface. Check fire was already conducted by the engineer already but the JFE out there did not know this. JFE checked fire again with the plug and guns connected to the cable/head. The JFE sent polarity which went to the plug and thus set the plug at surface. If the JFE had sent the opposite polarity gun 1 would have detonated at surface.Failure to follow explosive safety procedures.

Newspaper report : 2 employees were severely injured in an oil field accident. Sheriff David Soward reported that the men, who were employed by Company, were injured in an accident involving a perforating gun used in drilling operations

Crew was preparing the gun run for stage 8. The Engineer was ?Checking Fire? through the collar locator. Operator during the ?Check Fire? procedure installed the collar locator on the gun string. The current initiated the setting tool and the plug was set on surface. After the setting tool stroked, the plug fell off. No blasting cap was installed in the bottom gun. Failure to follow ?Explosive Safe Arming Procedures?.

The ?Explosive User in Charge? must lead the task and be physically involved in connecting the wireline tool string to the unarmed explosive device so that an electrical circuit is completed from the wireline unit to the point where the detonator will be attached. ?Explosive User In Charge? must verbally confirm and physically present the Safety Key to the operator prior to installing the wireline tool string to the unarmed explosive device

Set a plug at surface. Engineer was performing a check fire and had a CCL error. The engineer went out of the logging truck to get the JFE and show the JFE the problem. When the engineer went outside of the truck, the operators assumed the check fire was completed. The operators connected the head to the setting tool. The engineer (not knowing that the head was connected to the setting tool) did another check fire to show the JFE the CCL error. When he did this, the plug set at surface.Failure to follow explosive safety procedures:
1. Failure to have safety key outside of the logging unit when the head is attached to the explosive device.
2. Failure to ensure that nothing is connected to the head when performing a check fire.

Guns fired in lubricator
Coiled Tubing job with ball drop firing head. Using Nitrogen to pump ball down. False indication of guns firing due to N2 pressure pumping profile. Pulled live guns into lubricator, when bleeding N2 off of lubricator created enough differential to fire the guns. Unfamiliar with using Nitrogen to pump ball down. Did not take appropriate safety measures. Added additional safety procedures for all ball drop firing head jobs. Jobs using N2 to pump ball down require approval and review by TCP Technology Dept.

Confirming that there is communication between coil and annulus while pulling out of the well.

OSHA Report. US Public Record
Accident Investigation Summary
The Rosel Company
Summary Nr: 200643302 Event: 09/12/2005 Perforating Gun Kills Employee And Injures Another

On September 12, 2005, Employees #1 and #2 were conducting oil and gas well wire line activities in the conversion of a well into an injection disposal well. They had logged the well, set an explosive bridge plug, and cemented the plug. They prepared an electrically initiated perforating gun that consisted of 36 shape charges in an 11-ft-long steel tube that was to be lowered into the well. The gun accidently discharged, and Employee #1 was hit with at least one charge on the upper thighs, which nearly severed both legs. Employee #2 was blown back onto the service rig floor and wellhead area. He had shrapnel wounds over his entire body and sustained nerve damage to a leg. Both employees were airlifted to a hospital. Employee #1 died upon arrival, and Employee #2 was treated and hospitalized until the next day. After he was released he required further medical treatment. The wire line was still energized from the prior logging activity and a check for the presence of electrical energy on the wire line was not conducted. This test would have shown electrical energy present on the wire line center conductor, and in all likelihood would have prevented the accident.

lack of procedures or following procedures: The wire line was still energized from the prior logging activity and a check for the presence of electrical energy on the wire line was not conducted. This test would have shown electrical energy present on the wire line center conductor, and in all likelihood would have prevented the accident.
OSHA Violations were for provision of a safe workplace, Training, use of explosives and blastiong agents, and selection and use of work practices.

hot fire check with setting tool. Power was on. - Less than 5 year experience engineer. Operator thought the engineer was finished with hot check. Failed to follow procedures and plugged in

Miscommunication. Operator thought engineer was done with hot-fire check

surface detonation after attaching gun to the line without powering down - Did it again on job one week later. After running logging tool, toot was not powered down and the gun was attached to the line

applied power

deto when off in safety loading tube from static discharge - Deto fired while in the safety loading tube. Wire shunted

suspected faulty deto

Gun fired during pressure check with TCP on coil tubing prior to well entry. - TCP head was not correctly pinned and fired 1-11/16" HSC inside riser on surface. Two employees, not seen by observers, came up on riser at time of detonation. Two B-B sized perforations into one person, hearing injury to both (one temporary). 12+ yrs experienced engineer.

Absolute PSI head pinned to wrong pressure setting

Charge auto detonated during heat test -

Failure to follow SOP

18" coiled-up 80 gr cord was thrown in burning 55 gal drum. Detonated. - Experienced (14+ yrs) gunloader decided to burn boxes that had been used to hold explosives. Burned small (2") cord pieces okay. Last box held about bunched up 18" of cord. High order detonation destroyed the drum and severely burned the employee.

incorrect burning procedure

"safe" detonator fired downhole -

used standard shooting panel instead of special firing panel