.... These additions appear to predominate the 2nd and 3rd treatment rounds where initial production response and treatment life have diminished. These treatments appear to mobilize plugging asphaltene solids, moving them deeper into the reservoir only to have them return and reagglomerate during flowback...

... Abstract Azeri-Chirag-Gunashli (ACG) is a giant field located in the Azerbaijan sector of the Caspian Sea. The major reservoir zones are multi layers sandstone formations with oil column up-to 1000m, and weakly consolidated where Open Hole Gravel Pack (OHGP) completions have become the standard...

... with traditional diagnostic Hall plots. The efficacy of the stimulation job was evaluated through Hall plots, calculated injectivity index, and skin. Pressure transient analysis (PTA) was used to determine kh products, reservoir pressures, and skin factors before and after the mud-acid stimulation. This paper...

... at the point of injection and fluid inflow into the reservoir follows the path of least resistance. Abstract Oil and gas production or water injection is sometimes hampered by wellbore scales and fills (i.e., inner well flow impediments) as well as formation damage (skin) that impedes flow. Formation...

... Abstract Kuwait heavy oil development target reservoir is a shallow, sub-hydrostatic and unconsolidated sandstone with relatively high porosity and permeability. Due to nature of this reservoir, well intervention operations in North Kuwait Heavy Oil Asset exhibit a higher risk of significant...

... that could impede hydrocarbon production from the reservoir after the fracturing process has been completed and the well is flowed back and put into production. Damage mechanisms caused by chemical-rock interactions have long been a concern for the industry. For Unconventional reservoirs...

... of formation brine, due to dissolved CO 2 gas, and reservoir pressure in oil fields is extremely important as they are linked to calcite scaling, which makes a large contribution to the inorganic elements. When the pressure declines, CO 2 will be stripped out of the solution, resulting in an increase...

... Abstract Radial Jet Drilling (RJD) is an unconventional drilling technique using the jet energy of high velocity fluids to drill laterals into the reservoir formation as an alternative to the traditional stimulation technique. In this subject case study, the productivity index in a Middle...

... Abstract Reservoir Conformance Control (RCC) methods may significantly improve IOR/EOR technologies through reduced water production and profile correction. In the past decades, polymer gel methods were predominantly applied with these goals. However, recently the silicates in oilfields...

... polymer gel system presents an efficient way for conformance control in the oil reservoirs. The emulsified polymer gel system was designed in such a way that it will separated into oleic and aqueous phase encountering higher reservoir temperature. The aqueous phase will become gel and provides...

... change. If precipitated, due to pressure decrease, asphaltene could deposit as a solid phase in the formation rock near wellbore becoming an obstruction to flow and inducing formation damage. Skin due to asphaltene deposition near wellbore was confirmed in several wells of a carbonate reservoir...

... perforation reservoir thermal method sand/solids control chemical flooding methods sagd completion installation and operations operation waterflooding wellbore design sand control particle wellbore integrity technical conference reservoir characterization fattahpour conformance improvement...

... Abstract A major operator in the Gulf of Mexico (GOM) desired to increase oil production to meet growing energy demand. To meet this challenge, the operator explored an alternate completion design to mitigate reservoir damage observed in previous producing wells and collaborated with the fluids...

... in the CT for telemetry. The approach leverages distributed temperature sensing (DTS) to evaluate the original water injection coverage across the reservoir. Results enable segmenting the open hole into intervals requiring different levels of stimulation. Each section benefits from a customized treatment...

... Abstract In tight reservoirs, the invasion of water-based fracturing fluids into the rock matrix may reduce hydrocarbon relative permeability and consequently oil production rate. This paper aims at investigating the change in oil effective-permeability ( k o e f ) during...

... model of time dependent skin factor measurement. Multiple field examples are analyzed and modelled comparatively to evaluate the magnitude of the time-lapse formation damage for specific reservoir rocks. Several mathematical models have been developed to model formation damage mechanisms. However...

... stability, and superior filtration required for long-term sand control and effective production inflow from reservoirs. Contrary to gravel packing that requires most of the wellbore length to be covered by screen to help dehydrate the slurry, the shape memory material may be placed selectively across...

... Abstract The design of lost circulation remediation strategies is complicated in naturally fractured reservoirs. It has been a great challenge for engineers to balance between fracture plugging and formation damage. In this study, experimental investigations and statistical analysis were...

... Abstract This paper describes field experience of designing a successful scale squeeze program for an oil well. This was done utilizing an adsorption isotherm derived from a core flood data from other reservoir. Correlation and reliability of the adsorption isotherm with actual field flow back...

... Abstract Water breakthrough (WBT) in the horizontal wells often leads to water flooding in the well, especially to those heavy oil reservoirs in reef limestone carbonate. The excessive water production from the hydrocarbon producing horizontal wells can adversely affect the economic life...