Enhanced Fracture Entry Friction Analysis of the Rate Step-Down Test

Abstract

Enhanced Fracture Entry Friction Analysis of the Rate Step-Down Test Leon V. Massaras; Leon V. Massaras Synergy Technology Co. Search for other works by this author on: This Site Google Scholar Alexanndru Dragomir; Alexanndru Dragomir PETROM Search for other works by this author on: This Site Google Scholar Daniel Chiriac Daniel Chiriac PETROM Search for other works by this author on: This Site Google Scholar Paper presented at the SPE Hydraulic Fracturing Technology Conference, College Station, Texas, U.S.A., January 2007. Paper Number: SPE-106058-MS https://doi.org/10.2118/106058-MS Published: January 29 2007 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Get Permissions Search Site Citation Massaras, Leon V., Dragomir, Alexanndru, and Daniel Chiriac. "Enhanced Fracture Entry Friction Analysis of the Rate Step-Down Test." Paper presented at the SPE Hydraulic Fracturing Technology Conference, College Station, Texas, U.S.A., January 2007. doi: https://doi.org/10.2118/106058-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Hydraulic Fracturing Technology Conference and Exhibition Search Advanced Search Abstract The procedures of the Rate Step-down Test (RST) also referred to as "Step-Down Test" (SDT), and of Conventional Fracture Entry Friction (FEF) Analysis have been used worldwide for over 15 years to separate the Measured Total System Friction (MTSF) into constituent components. The magnitude of the FEF components has served as guidance to design and/or modify the placement procedure and treatment schedule, in order to reduce unplanned terminations (screenouts) of propped hydrofrac treatments.Conventional FEF Analysis has inherent limitations which produce non-unique (somewhat erroneous) results that can only be overcome with Enhanced FEF Analysis methodology; which bypasses these limitations with innovative methods: appropriately corrected fluid friction factors, non-uniform perforation discharge coefficient, application of Maximum Drag Reduction (MDR) asymptote, and, matching of MTSF with Calculated Total System Friction (CTSF) at all rates of the RST. Several RST examples are analyzed with FEF Analyzer to illustrate and document the success in placing safe and effective propped hydrofrac treatments.Real-world analogies are used as visual aids to explain the complex processes of FEF, along with RST design methodology, RST execution procedure, and detailed calculation procedures for performing Enhanced FEF Analysis.Net-pressure history matching is significantly improved, due to the increased accuracy of calculating the magnitudes of the wellbore friction and of the FEF components. Keywords: Upstream Oil & Gas, flow rate, real time system, friction, regime, procedure, Artificial Intelligence, FEF analysis, flowrate, RST Subjects: Hydraulic Fracturing, Well & Reservoir Surveillance and Monitoring, Formation Evaluation & Management, Perforating, Fracturing materials (fluids, proppant), Production logging, Drillstem/well testing, Completion Installation and Operations, Completion Operations Copyright 2007, Society of Petroleum Engineers You can access this article if you purchase or spend a download.