select fire gun detonated - caused by the use of electric soldering iron to make connections

single shaped charge detonated while technician setting for test shot - No alarm warning available on shooting panel. Miscommunication.

Non-SOP

Lead azide detonator - Detonator went off in loader's hand

static spark

Open-face perforator - Low order, dumping shaped charges from box

Impact

Det cord - Explosion of det cord burning in a barrel

Burn to explosion

Massive explosion of a slurry propellant - Explosive detonated during well equipment makeup and loading of propellant into well

Pinch-explosive in threads

killed company man -

lead-azide detonator fired - 20 incidents of this kind

static friction caused detonation

Conducting a DST wtih TCP guns which were auto-released to allow through tubing perforating later with capsule charges. RIH with 3 m capsule charge gun system, indication that detonator was initiated and POOH missing gun system (sheared at Firing Head). RIH with 2nd 3 m gun and fired gun with no indication, POOH and complete gun was left in hole. PLT's indiacted no perforations were added with either perf run. RIH with 5 m capsule gun and successfully added the perforation. Complete the DST and R/D the Co-Flex Hose off Surface Test Tree and found 1st gun at the Choke Manifold; it had exited the wing valve on surface test tree. Pick up hose to look for 2nd gun and it wasn't located (assumed downhole). When Co-Flex reached contractor base used crane to P/U Co-Flex and 2nd Gun drops out of hose with detonator still attached to det cord.Design of Surface Test Tree with +/- 45 deg angled down wing valves allowed the flexible strip gun to enter the co-flex flowline hose. Wireline operators were having difficulty getting the well and were working the wire to get tool string to fall. Apparently while manipulating the wire they sheared off the guns allowing them to enter the co-flex hose.Care should be taken when utilizing the STT Design with these types of wing valve configuations and look at more stiffer toolstring assy.

Close Wing Valves if possible or use different design of STT with wing valves at 90 deg angle to flow. Alternative is to use stiffer gun assembly or close the wing valves while attempting to RIH if a static well condition is possible.

RF initiation of deto from large transmitter -

Surface detonation when putting head on gun after hotcheck? -

Non-SOP

Surface detonation of gun. No details - Cause is undocumented but results in ban on use of Low Impedance EEDs by UK DOE

Well Site

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