.... In such circumstances, the timing of gel removal could be completely controlled by the timing of the breaker addition. The gel was also evaluated for any formation damage issues if used in a high temperature gas reservoir by using regain permeability experiments with Berea sandstone cores. Necessary precautions were...

... several successful field applications of the new fluid system and present production data to demonstrate its real-world performance and effectiveness. proppant polymer fracturing materials Upstream Oil & Gas fracturing fluid regain permeability hydraulic fracturing fresh water viscosity...

..., the modified drilling fluids are developed by adding fibrous bridging agents and by decreasing pH value. Dynamic leakoff tests manifest that the modified drilling fluids are able to rapidly seal the micro fractures and pore throats and the percentage of regained permeability can reach more than 85%. Two...

... with vertical wells. The results of granularity analysis and dynamic damage evaluation experiments present that the original drill-in fluids can not protect the reservoir with permeability of more than 100 mD, while the percentage of regain permeability is less than 50%. The drilling fluids were modified...

... or eliminate the need for remedial treatments and can decrease damage from certain fluid additives such as lubricants and corrosion inhibitors. drilling fluid property water block lubricant formation damage drilling fluid chemistry drilling fluid formulation regain permeability surfactant package...

... Abstract Regained permeability studies with HEC polymer in high-permeability cores revealed that persulfate-type oxidizing breaker and enzyme breaker do not adequately degrade the polymer. Use of high concentrations of acid or peroxide breakers did show improved breaking, but additional work...