Surface Reactive Fluid’s Effect onShale

Abstract

Surface Reactive Fluid's Effect on Shale Bill Grieser; Bill Grieser Halliburton Search for other works by this author on: This Site Google Scholar Bill Wheaton; Bill Wheaton Devon Energy Production Co., LP Search for other works by this author on: This Site Google Scholar Bill Magness; Bill Magness Williams Energy Services Co. Search for other works by this author on: This Site Google Scholar Matt Blauch; Matt Blauch Halliburton Search for other works by this author on: This Site Google Scholar Ray Loghry Ray Loghry Halliburton Search for other works by this author on: This Site Google Scholar Paper presented at the Production and Operations Symposium, Oklahoma City, Oklahoma, U.S.A., March 2007. Paper Number: SPE-106815-MS https://doi.org/10.2118/106815-MS Published: March 31 2007 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Grieser, Bill, Wheaton, Bill, Magness, Bill, Blauch, Matt, and Ray Loghry. "Surface Reactive Fluid's Effect on Shale." Paper presented at the Production and Operations Symposium, Oklahoma City, Oklahoma, U.S.A., March 2007. doi: https://doi.org/10.2118/106815-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 Oklahoma City Oil and Gas Symposium / Production and Operations Symposium Search Advanced Search Abstract In general shale is thought to be relatively nonreactive to low pH or acidic fluids. This is because of the general belief the clay, silt, and organic materials comprising the major components of shale formations exhibit insignificant bulk solubility in acid. What we find however is that shale units are highly laminated and contain acid-soluble minerals homogenized in the shale bulk matrix and natural fractures. XRD analysis and SEM images of shale samples show a great diversity and distribution of soluble material in the shale producing unit. SEM images of the shale fracture face before and after exposure to certain reactive fluids show a remarkable amount of surface texture disruption and micro-etching of the fractured surface. Based on these observations, it is concluded that reactive fluids are capable of (1) enhancing gas diffusion into and through narrow-aperture induced fractures, and (2) increasing surface area for flow of gas from the shale matrix. Such fluids are also capable of enhancing flow through mineral-filled microcracks or other secondary porosity. Initial production response from wells treated with reactive low pH fluids has been promising.This paper documents X-ray and SEM analyses of many shale plays in Oklahoma. Production enhancement mechanisms are proposed to explain the observed physical effects of these fluids on shale. Keywords: hydraulic fracturing, complex reservoir, shale gas, Artificial Intelligence, surface area, shale, sand slug 14, stimulation fluid, society of petroleum engineers, immersion Subjects: Hydraulic Fracturing, Reservoir Characterization, Formation Evaluation & Management, Unconventional and Complex Reservoirs, Exploration, development, structural geology, Shale gas, Shale oil Copyright 2007, Society of Petroleum Engineers You can access this article if you purchase or spend a download.