... that both cemented liner and open-hole with external packers completions wells have been used in shale gas developments. Plug and Perf and continuous pumping multi-stage hydraulic fracturing methods were respectively used. Low viscosity fracturing fluids are preferred to increase fracture complexity...

... of a manufactured proppant obtained for evaluation was taken from a well that had a sandstone-dolomite lithology, while natural sand (quartz) proppant samples were obtained from different fracture stimulated wells where shale was the dominant lithology (Barnett shale). Various evaluation techniques were used...

.... Most of the wells with the barefoot interval length of over 2000m or even about 3500m were drilled under underbalanced conditions to improve exploration success rate. The exploration results were disappointing. Shale sloughing and borehole enlargement frequently occurred during the process of previous...

... Abstract Many studies have been performed to identify chemical additives that will aid shale stability in large volume slick water fracturing treatments. Most of the targeted shale formations have a very low permeability, do not experience conventional leakoff and do not contain high amounts...

... with specific geometry and/or flow performance requirements and examples of their corresponding field performance. Tests have been performed with full simulation of single shot perforation, and simplified perforating simulations into stressed rock. Results are reported for shale, sandstone, and high...

... performed numerous experiments on microemulsion-assisted fluid recovery from columns packed with sand proppant and shale, using microemulsions of different chemical composition. Our results indicate that the extent to which microemulsion additives promote foaming is an important factor in achieving highest...

... a number of different scenarios, such as the effect of sand/shale layers, non-compliance in washouts, solids production and time dependent effects in shales. The model uses the actual structure of the ESS. The first stage of the simulation is to expand the ESS. This ensures that the proper work hardening...

... Abstract One of the major challenges in underground gas storage wells in Italy is to maximize the sand layers exposure by drilling slanted or sub-horizontal wells through several shale bodies to obtain high gas rate performances during the production and the injection cycles. This challenge has...

... drilling operation displacement completion formation damage drilling fluid property Upstream Oil & Gas Efficiency shale sequence gravel open hole reservoir permeability shunt tube packer SOBM OHGP completion Completion Fluid Introduction The Greater Plutonio Development is a 5...

... 3D data acquisition and interpretation, the Girassol/Jasmim architecture understanding was improved and each channel complex was subdivided into different sequences (or channel stories). These sequences were separated by decametric shale-prone abandonment phases, which are potentially good vertical...

... shale and mudstone packages. The well was designed with a long horizontal open hole section to cost-effectively access multiple sand bodies and maximise productivity while minimising drawdown across the sandface. Baker Oil Tools BetaBreaker technology was utilised for the completion to maintain...