BEGIN:VCALENDAR VERSION:2.0 METHOD:PUBLISH PRODID:-//Tendenci - The Open Source AMS for Associations//Tendenci Codeba se MIMEDIR//EN BEGIN:VEVENT DESCRIPTION:--- This iCal file does *NOT* confirm registration.\r\nEvent d etails subject to change. ---\r\nhttps://www.spegcs.org/events/3565/\r\n\r \nEvent Title: C&P Presents :" Assessment of Fracture Initiation from Mult i-Clustered Perforations and Impact of Geomechanics on Completion Efficien cy"\r\nStart Date / Time: Mar 22, 2017 11:30 AM US/Central\r\nLocation: No rris Conference Center – Houston/Westchase\r\nSpeaker: Xiaowei Weng\r\nG oogle\r\nhttp://maps.google.com/maps?q=9990+Richmond+Avenue,Houston,TX,770 42\r\n\r\nForecast\nhttp://www.weather.com/weather/monthly/77042\r\n\r\nTo maximize the formation contact in unconventional reservoirs, multi-stage horizontal well completion with multiple short perforation clusters is wid ely adopted to facilitate simultaneously initiating multiple fractures fro m the perforation clusters in each stage. Many previous field observations have shown that a significant percentage of perforation clusters are ofte n not effectively stimulated to contribute to the production. Efforts have been made to improve the effectiveness of horizontal completions by focus ing on using lateral measurements to place perforation clusters in rock of similar stress so they are more likely to be successfully stimulated. Whi le this has significantly improved the completion efficiency, the fundamen tal understanding of the fracture initiation process in a completion confi guration with multiple clusters of spiral perforations is still lacking an d hence unable to provide a quantitative means to predict and assess the c ompletion efficiency.\r\nTo address these issues a near-wellbore fracture initiation calculator based on analytical elastic solution for the cased a nd perforated completion configuration has been developed. It predicts fra cture initiation pressure from a perforation of any phase angle, the initi ation location and fracture orientation relative to the wellbore. For a mu ltiple clustered perforated completion, with many perforations oriented in different angles and possibly subjected to different local stresses, frac tures may initiate only from some of the perforations. The model predicts a breakdown pressure for a given pump rate and a subset of perforations th at are broken down. In this presentation, the fracture initiation model wi ll be described, along with some examples and comparison with 3D numerical simulations and experimental results. A series of sensitivities have been performed to quantify the impact of injection rate, tectonic setting, str ess variation between clusters, and perforation properties on hydraulic fr acture creation, orientation and complexity at each perf cluster. They dem onstrate that fractures may not initiate from some clusters and that withi n an active cluster some perforations may not be accepting fluid. Incorpor ating the results from the model can help engineers design completions tha t maximize effective stimulation of perforation clusters and reduce near-w ell fracture complexity.--- This iCal file does *NOT* confirm registration .Event details subject to change. ---\r\n\r\n--- By Tendenci - The Open So urce AMS for Associations ---\r\n UID:uid3565@spegcs.org SUMMARY:C&P Presents :" Assessment of Fracture Initiation from Multi-Clustered Perforations and Impact of Geomechanics on Completion Efficiency" DTSTART:20170322T163000Z DTEND:20170322T180000Z CLASS:PUBLIC PRIORITY:5 DTSTAMP:20240329T050618Z TRANSP:OPAQUE SEQUENCE:0 LOCATION:Norris Conference Center – Houston/Westchase X-ALT-DESC;FMTTYPE=text/html:
To maximize the formation contact in unconvent ional reservoirs, multi-stage horizontal well completion with multiple sho rt perforation clusters is widely adopted to facilitate simultaneously ini tiating multiple fractures from the perforation clusters in each stage. Ma ny previous field observations have shown that a significant percentage of perforation clusters are often not effectively stimulated to contribute t o the production. Efforts have been made to improve the effectiveness of h orizontal completions by focusing on using lateral measurements to place p erforation clusters in rock of similar stress so they are more likely to b e successfully stimulated. While this has significantly improved the compl etion efficiency, the fundamental understanding of the fracture initiation process in a completion configuration with multiple clusters of spiral pe rforations is still lacking and hence unable to provide a quantitative mea ns to predict and assess the completion efficiency.
To address thes e issues a near-wellbore fracture initiation calculator based on analytica l elastic solution for the cased and perforated completion configuration h as been developed. It predicts fracture initiation pressure from a perfora tion of any phase angle, the initiation location and fracture orientation relative to the wellbore. For a multiple clustered perforated completion, with many perforations oriented in different angles and possibly subjected to different local stresses, fractures may initiate only from some of the perforations. The model predicts a breakdown pressure for a given pump ra te and a subset of perforations that are broken down. In this presentation , the fracture initiation model will be described, along with some example s and comparison with 3D numerical simulations and experimental results. A series of sensitivities have been performed to quantify the impact of inj ection rate, tectonic setting, stress variation between clusters, and perf oration properties on hydraulic fracture creation, orientation and complex ity at each perf cluster. They demonstrate that fractures may not initiate from some clusters and that within an active cluster some perforations ma y not be accepting fluid. Incorporating the results from the model can hel p engineers design completions that maximize effective stimulation of perf oration clusters and reduce near-well fracture complexity.