Abstract: A protective case comprising; a housing having a front compartment and a rear surface, wherein the front compartment is sized to securely fit an electronic device; a first plurality of attachment points secured to the rear surface of the housing; a first plurality of securing means secured to the piece of elastic material; and a detachable compartment having—a front surface and a rear surface, wherein an opening to a compartment is formed between the front and rear surfaces and the compartment is accessible through an opening, a second plurality of attachment points are secured to the rear surface, wherein the second plurality of attachment points substantially align with the first plurality of attachment points, and a second plurality of securing means, wherein the second plurality of securing means substantially align with the first plurality of securing means.

Abstract: A protective case for electronic devices comprising; a housing having front compartment and a rear surface, wherein the front compartment is sized to securely fit an electronic device, a piece of elastic material secured to rear surface of the housing, wherein at least one edge of the piece of elastic material is unsecured, thereby creating a first compartment, a first portion of a securing means attached to the housing substantially along the secured edges of the piece of elastic material, a pocket having a second compartment having a front surface and a rear surface and a top edge, and a second portion of the attachment means secured to the rear surface to substantially align with the first portion of the attachment means secured to the housing.

Abstract: The device is based on the principle of downhole shut-in of oil producing wells that do not flow to surface self-powered but require the injection of gas to lighten the fluid column and thus enable the well to produce. This downhole shut-in device comprises a check valve, an anchoring system, a seal system; an untethering system, a shock absorber and a sleeve for the protection of pressure and temperature memory probes. The objective of the downhole shut-in device is to obtain characteristic information of the fluid-rock system from variations in the pressures recorded in order to obtain the dynamic characterization of the reservoir.