... in several occasions reached up to 1.5 feets in length, too big to pass by annular space between inner diameter of liner and outer diameter of coiled tubing (CT) and the debris were too heavy to be lifted using fluids energized with nitrogen. It is important to highlight that during the first run of well...

...-deploying, easily retrievable", without elastomeric components. The tool "works on a principle similar to piston rings in a combustion engine". Because of the RSP being made of an alloy steel, it was naturally more resistant to high temperatures. Additionally, the rings had a slightly larger diameter than...

.... The porosity ɛ of the medium is assumed to be constant throughout the bed. Wall effects are considered in the model although they are not significant for D/d >10, D corresponding to the tube inner diameter and d to a single solid sphere nominal diameter. The specific surface area S is calculated using...

... rates using big hole perforations in vertical wells without sand control. By letting the sand be produced in conjunction with the oil, the so called “wormholes” can be created within the reservoir. These wormholes are structures of about 1 inch diameter that can reach several meters of length beyond...