Juru Bor (Driller) case studies
Juru Bor (Driller) · Put your knowledge to work in context.
The Juru Bor (Driller) credential is a workplace certification for people who operate or supervise drilling equipment - typically on mineral exploration, water-well, geotechnical or construction rigs. "Juru Bor" is the Malay term for driller, so the exam is delivered in Malay and assumes you already work around a rig rather than learning the job from scratch. The Juru Bor (Driller) case studies are 5 cases and about 4,049 words.
1Pit Gain at 2,450 m: Confirming a Kick and Building a Kill Sheet
At 06:40 the well is being drilled at 2,450 m TVD (vertical) with 1.22 sg water-based mud when return flow at the shakers increases and the active pit total rises by 4.5 m³ in eight minutes. The driller stops the top drive, picks up off bottom and closes the annular preventer.
872 words, about 4 min2Drilling Line Inspection: Five Broken Wires Before the Trip Is Finished
During a trip out of hole at 2,100 m, the derrickman reports a rhythmic popping from the drilling line. Inspection of the 1½ in 6×19 IWRC line finds five broken wires spread over one rope lay about 12 m above the deadline anchor, one broken wire at the poured socket, and a measured diameter 1/16 in below nominal at the worst point.
803 words, about 4 min3Crane Lift of a Fluid End: Sling Angle and Off-Centre Centre of Gravity
At 14:00 a 4.8 t mud pump fluid end is to be lifted from the pipe rack to the pump skid, a 9 m lift at 18 m radius. The crane is a 25 t truck crane with current certification.
822 words, about 4 min4Losses at 2,900 m: ECD Above the Leak-Off Pressure
At 04:20 the 8½ in hole is at 2,900 m MD and 2,750 m TVD with 1.46 sg water-based mud at 1,150 L/min. The MWD reports an ECD of 1.58 sg.
778 words, about 4 min5H2S Alarm at the Shale Shaker: Evacuation and Rescue
At 22:15 the fixed H2S detector at the shale shaker reads 18 ppm and rising, and the shaker hand's personal monitor alarms. The well is at 3,350 m and offset wells produced up to 40 ppm H2S.
774 words, about 4 min