At high separator pressures the well can experience two modes of instabilities: casing heading and density-wave oscillations.
The model, designed to represent slugs generated by the casing heading and terrain/riser concomitantly, was evaluated by comparison with a traditional commercial simulator and was also implemented in two actual production systems.
This phenomenon is responsible for unsteady state in well string and also for loss of part of productivity of well both in gas and oil producers (Torre et al. 1987) which is known as casing heading and liquid loading in oil and gas wells, respectively.
Although a number of simplified models for the gas lift system can capture the main feature of the casing-heading phenomenon, most of them assume that the substances in the tubing are homogeneous, which ignores the propagation phenomenon.
My "bullet bucket challenge" video, in which I poured a few hundred shell casings over my head in memory of those who fought and died in the struggle for human rights, was intended as a shocking visual that would illustrate the realities of violence and how it is affecting our communities, our children and our future.
The second interesting design element of a Turtle pen is its extendable casing (or "Turtle Head" as it is otherwise known).
Still, the more fortunate fossicker among them might forage a piece of a porcelain whiskey jar from the beach at Anzac Cove, an old saddlery buckle, perhaps, or (most prized) a bullet head or casing.
Besides added cost and training needs, equipment sterilization may not address the potential for significant contamination from microbial contamination of the well head, well casing, well filter pack, or the aquifer in the immediate vicinity of the well due to the omnipresence of fecal matter and inadequate well construction.
After the haggis has been disembowelled, the sheep's stomach casing is placed on the head while the assembled company sing "I Love a cookie, A Co-Operative cookie, You can tell it's Co-Operative by the smell".
The Zagat team even strapped a GoPro camera in waterproof casing to the lobster's head to give you a lobster-eye view on the whole affair.
