Multi-stage Hydraulically Fractured Horizontal Shale Gas Well Rate Transient Analysis

Abstract

Multi-Stage Hydraulically Fractured Shale Gas Rate Transient Analysis Rasheed O. Bello; Rasheed O. Bello Texas A&M University Search for other works by this author on: This Site Google Scholar Robert A. Wattenbarger Robert A. Wattenbarger Texas A&M University Search for other works by this author on: This Site Google Scholar Paper presented at the North Africa Technical Conference and Exhibition, Cairo, Egypt, February 2010. Paper Number: SPE-126754-MS https://doi.org/10.2118/126754-MS Published: February 14 2010 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Bello, Rasheed O., and Robert A. Wattenbarger. "Multi-Stage Hydraulically Fractured Shale Gas Rate Transient Analysis." Paper presented at the North Africa Technical Conference and Exhibition, Cairo, Egypt, February 2010. doi: https://doi.org/10.2118/126754-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 North Africa Technical Conference and Exhibition Search Advanced Search Abstract The common completion technique in horizontal shale gas wells is by hydraulically fracturing in multi-stages. In this paper, a linear dual porosity model is used to approximate the shale gas completions with a horizontal well and multiple hydraulic fractures. Five flow regions are identified with this model. Region 1 is transient drainage in the fractures, Region 2 is simulataneous drainage from matrix and fractures or bilinear flow, Region 3 is the infinite-acting case, Region 4 is transient drainage from the matrix and Region 5 is the boundary-dominated flow case. Derived equations are presented for each of the flow regions.It appears that field production data exhibit Region 4. This transient flow regime is the only flow regime available for analysis in many wells. A skin effect for Region 4 is observed in many wells and described in this paper. A procedure is presented in this paper to analyze field data and is illustrated with a sample case.. Keywords: gas reservoir, complex reservoir, slab matrix, region 4, hydraulic fracturing, equation, dual porosity model, log-log plot, reservoir, transient response Subjects: Hydraulic Fracturing, Formation Evaluation & Management, Unconventional and Complex Reservoirs, Shale gas Copyright 2010, Society of Petroleum Engineers You can access this article if you purchase or spend a download.