The Rising Influence of Rising Affluence

[OakesCS]

This is outside my competency but dummies guide:

The holes r created by shaped charges: ~ a bunch of armor piercing rocket propelled grenades embedded on ~ a cylinder w varying geometries and numbers along and around the cylinder which is inserted into the well. The explosive penetrates the surrounding tubing thereby allowing fluid communication between the reservoir rock and production tubing. In order to best control flow into or from the rock, the well engineers will want to know the number of holes, hole locations and hole diameters. I don’t know if the hole in the outer tube is always or usually smaller or larger than the inner hole but I’m sure the engineer is more pleased with a regular distribution of known hole sizes and shapes rather than having a mish mash of different hole sizes and shapes. If there’s some unplanned asymmetry in hole sizes, shapes and distribution, then there will b unplanned asymmetry in fracture distribution and probably an undesirable heterogeneity in reservoir depletion. Circular holes are easier to model versus some raggedity irregular fried egg shaped holes and I suspect failure to penetrate both tubes is particularly unpleasant. I don’t know if that happens but I’d b surprised if it doesn’t. I also suspect that sometimes charges fail to fire which screws up hole distribution.