... underbalance and acidizing bypass damage by using propellants or employing new process such as hydraulic fracturing. Dynamic underbalance is an effective method to stimulate productivity when it is accurately applied using the right conditions at the initial perforation event. Some wells, however, face...

... Abstract We present perforating on wireline with dynamic underbalance (DUB) to simultaneously maximize productivity and minimize gunshock. We focus on perforating on wireline with DUB because, when compared with other approaches, perforating with DUB is probably the best method to deliver lower...

... Abstract Dynamic Underbalance perforating is a completion technique which uses a perforating system engineered to create a rapid underbalance immediately upon formation perforation. This technique – properly applied – improves well deliverability by effectively cleaning the newly-created...

... suspending the well as well as have the ability to bring back samples of the scale for further testing. This paper presents a case history of the successful removal of barium sulfate (BaSO4) without killing the well or costly chemical intervention. The method harnesses the effects of dynamic underbalance...

... installation and operations well xx3 wellbore implosion show perforation permeability upstream oil & gas spe 144080 contribution increase production bopd dynamic underbalance stimulation wellbore damage society of petroleum engineers Overview Perforating is a highly destructive event...

... liner charges produced characteristic "dynamic overbalance" conditions in the wellbore, in a system configuration which produced dynamic underbalance for the conventional charge. We conclude that the reactive liner charges tested are detrimental to productivity in naturally perforated completions...

... perforation tunnel fractal dimension dynamic underbalance experiment perforation cleanup cleanup Introduction Shaped-charge perforating subjects the rock to extensive pressures and impact stresses which fracture sand grains in the vicinity of the perforation tunnel and thus create a zone...

... not only in better wells, but also in increased completion efficiency. In August 2003 a closed-chamber, dynamic underbalance shoot and pull operation was performed on Ninian North—a world first. The well came in at 50% higher production than expected. Since then, several other wells have been perforated...

... perforation tunnel fluid loss formation damage upstream oil & gas completion installation and operations clear fluid open well perforation kill pill wellbore pressure pressure dynamic dynamic underbalance fluid loss control reservoir characterization drilling operation spe 94596 drilling...