...-porosity zone near the tunnel edge in which the damage is dominated by porecompaction. Thickness axial location reduction Completion Installation and Operations radial variation geometry compacted zone perforation tunnel zone permeability debris porosity zone pressure drop thin section...

... Abstract All perforating operations cause debris, which can lead to wellbore restrictions, choked downhole hardware, plugged perforations, formation damage and operational problems throughout the installation of the completion. As a result, the industry has taken significant efforts to develop...

... are performed with shaped charges or jet perforators. A shaped charge consists of a liner, a main explosive load and primer charge all compressed within a metal case that is typically made out of steel or zinc. The zinc case charge is the low-debris option as it yields smaller (powdered) debris which can easily...

... Abstract Debris management is essential to successful completion operations. A High-Pressure Debris Unit (HPDU) was developed to maintain a solids-free environment during completion and workover operations. The HPDU protects downhole tools and equipment by keeping completion fluid and workover...

... (~20,000 psi). Under these conditions, the challenges are to create sufficiently large entrance holes in the casing, minimize the high-risk of equipment damage due to gunshock, and minimize the amount of perforating debris created. Perforating several intervals in a single run is required to complement...

... Abstract Potential damage to the formation and generation of destructive wellbore debris can occur during perforating operations with shaped charges. One type of damage is to the formation, which is related in part to the powdered metals and metal alloys incorporated into the metal casings...

... and Operations strength productivity perforation maximum value infinite porous medium maximum underbalance wellbore perforation radius Magnitude underbalance permeability equation Upstream Oil & Gas pore pressure skin factor surge flow perforation tunnel exhibition debris dynamic...

... Abstract A critical step toward the optimized well completion efficiency is to minimize perforating debris. Conventionally zinc-case shaped charges have been used in perforating for their perceived benefits of low cost, low-debris, and dissolvability by acid. The low-debris characteristic has...

... Abstract Completion of cased and cemented wells by shaped-charge perforation results in damage to the formation, which can significantly reduce well productivity. Typically, underbalanced conditions are imposed during perforation in an effort to remove damaged rock and shaped-charge debris from...

... primarily on radial flow. metal slug permeability upstream oil & gas perforation tunnel perforation limestone sample sandstone sample charge debris completion installation and operations tunnel formation damage perforation tip underbalance underbalance pressure sandstone open tunnel...

... Abstract During the course of normal perforating operations, special attention is paid to minimizing debris in order to prevent perforation tunnel plugging or other forms of formation damage. However, operational constraints, especially in high-temperature offshore wells, may result in freshly...

... internal phase fluid system. Simulated perforation formation damage tests with and without zinc debris were conducted on conventional brine-based and oil-based fluid systems. The tests showed the chemical reaction of the brine-based system to zinc debris had little effect on return flow efficiency...

... form naturally fractured carbonates, some wells begun to suffer of plugging across the perforated zone with unidentified debris, which was accompanied with water cut increase. This paper describes the laboratory evaluation of the actual environmental downhole impact (high reservoir temperature, BHST...

... Abstract An unexpected source of potential formation damage can be generated when controlled debris perforating systems are detonated in clear completion brines. This paper presents the results of a systematic laboratory study of this potential damage, previously unreported in the published...

... The explosive repair device has not been fully field tested in North America. Reports of repair overseas have been made, but documentation is not available. It was reported that carrier guns for the explosive device should be used to eliminate debris and hardware damage. String shot devices...

... differential pressure used for wireline operation can result in having a lowered permeability zone and debris clogged perforation. Flow area then is greatly reduced. Reduced flow area can result in excessive velocities that may cause water coning and/or sand flow. WIRELINE CASING GUN APPROACH Fig. 2...

... Installation and Operations emulsion sand control surfactant agent paraffin formation damage spe 4775 Texas reservoir permeability means debris particle Formation Damage Control perforation Stimulation Work SOCIETY OF PETROLEUM ENGINEERS OF AIME 6200 North Central Expressway Dallas, Texas...

... Upstream Oil & Gas Brine Completion Installation and Operations drilling fluid formulation debris flow in porous media drilling operation electron microscope picture drilling fluid selection and formulation drilling fluids and materials Fluid Dynamics check valve Increase Oil Production...