Halliburton recently participated in the drilling of what is believed to be one of the world’s most extreme inclination wells - at an angle of 164.7 degrees - offshore South East Asia. That’s so far beyond horizontal that the bit was traveling nearly vertically upwards!
As you might imagine, this represented a ‘deviation’ from the initial well program following a mid-well change of objective. The technical challenge was handled by the Halliburton Energy Services team, using Baroid’s DFG+ Hydraulics and Downhole Rheology modeling package. This matched surface rheology data with downhole requirements for hole cleaning and cuttings transport. The maximum total vertical depth of the well was 2,918 meters (9,571 feet) - starting at 2,900 meters (9,512 feet) measured depth, the team drilled the well at 90 degrees or higher. At a total depth of 5,730 meters (18,794 feet), the hole was circulated until the shakers cleaned up and the bit was pulled without pumping or back reaming. Had the angle been increased another 15 degrees it would have drilled vertically upwards towards the surface!
Halliburton Energy Services’ president Jody Powers said "We are thrilled to be involved in the success of this world record well. This accomplishment further exemplifies how cooperation and communication between partners, the use of technologically advanced and environmentally friendly products, and the ability to make real time changes can optimize our customers’ reservoir performance."
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