Alert 21 Dec 2021 Pulsation dampener failure During well displacement, a sudden loss in standpipe pressure was observed. (Max circulation pressure at time of the incident was 1750psi). The Driller immediately shut down all mud pumps. The Derrickman confirmed that the discharge dampener on Mud Pump # 3, had separated from the flange area and wa… View Alert
Alert 21 Dec 2021 Disabled and non functional safety devices leads to destruction of derrick board Recently a directional driller was having trouble keeping a tool face and told the driller to work the pipe all the way up and back down again. The stand had been drilled almost all the way down and the elevators had been kicked out over the mousehole. The driller picked up off bottom and hit the li… View Alert
Alert 21 Dec 2021 Rig floor plate falls to production deck The drill crew had completed cleaning the pollution pans and were in the process of installing the pollution pan covers (see Figure 1, Green Boxes) when a Floorhand stepped on a floor plate that was still in its original position (See Figure 1, Orange Box), causing it to tilt. The plate subsequently… View Alert
Alert 21 Dec 2021 Pressure release after ice plug removal results in injury A snubbing crew rigged up on location. Set-up operations were completed for the wellhead stabiliser, snubbing jack, catwalk, pipe racks, pumping unit and primary accumulator. The crew was in the process of installing the snubbing unit equaliser line and the pumping unit flow line. The snubbing unit … View Alert
Alert 21 Dec 2021 Internal explosion ruptures mounted compensator piping Two employees were in the derrick equalising the internal pressure between Composite Air Pressure Vessels (CAPV) on the Crown Mounted Compensator (CMC) when an ignition occurred inside the system. Either heat generated by adiabatic compression or static generated by the air transfer led to ignition … View Alert
Alert 21 Dec 2021 Catastrophic failure of mud centrifuge While processing drilling fluids, a mud centrifuge (Fig. 1) experienced a catastrophic failure resulting in the ejection of the pillow block bearing assembly. The 65 lb. assembly travelled approximately 190 ft before striking the steps of a living quarter trailer (Fig. 2). The gearbox, back drive el… View Alert
Alert 21 Dec 2021 Blind shear door blown off BOP body During a high-pressure test of the Blow Out Preventer (BOP), one of the Blind Shear Ram (BSR) doors blew off the BOP body. The door was found resting on top of an adjacent equipment container, approximately 5 meters (16 feet) to the port side of the BOP. The pressure test took place using the cement… View Alert
Alert 21 Dec 2021 Sudden ice plug release results in struck-by injury While converting from air to mud, the employee was attempting to reinstall the pressure gauge on the standpipe manifold. When he removed the bull plug from the manifold, he noticed ice had accumulated inside the two-inch (5cm) line. He notified the Driller and then attempted to remove the ice using … View Alert
Alert 21 Dec 2021 Dropped object during lifting operations As the banksman was providing final instructions to the crane operator, the load handler looked up and observed the hoist rope very close to an antenna fixed to a handrail on the Heli-deck access platform. The load handler alerted the banksman of the hoist rope proximity to the antenna. Immediately … View Alert
Alert 17 Dec 2021 Foreign object in eye An Able-Bodied Seaman (AB) was carrying out a routine maintenance which changed to include paint chipping. A few hours after the job was completed, he reported a pain in his eye to the Master. Subsequent examination indicated that he had a small piece of debris in his left eye. Medical assistance … View Alert
Alert 15 Nov 2021 Do you consider how measures to prevent a leak could cause a leak? Sometimes the measures we put in place to prevent a release of flammable or toxic fluids can lead to other problems that just make the situation worse. A few weeks after the start-up of production on a platform in the North Sea several gas alarms suddenly sounded in the central control room. The ala… View Alert
Alert 15 Nov 2021 Aviation Security Alert - Mobile phone case holder with lighter Mobile phone case holders with a built- in cigarette lighter are available to purchase on the market at a cost of less than £5. These items do have a high heat exposure. Anyone found at Heliport Security with one of these items will have it removed and confiscated. View Alert