rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    non sort: An
    title: Innovative Closed Fracture Acidizing Technique for Deep Carbonate Reservoirs Using GLDA
  name:
    name part: He, Jia
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: Nasr-El-Din, Hisham
    role:
      role term: thesis advisor.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2015
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: The closed fracture acidizing (CFA) technique is designed to overcome inadequate conductivity development in traditional acid fracturing treatments. However, achieving adequate fracture length is challenging due to the fast acid spending rates and the high corrosion rate to well tubular, especially at high temperatures. This study developed a new closed fracture acidizing (CFA) technique using glutamic acid-N,N-diacetic acid (GLDA) to overcome the limitations of conventional acid fracturing systems and achieve significant length and final fracture conductivity. In this study, a tensile fracture was created across a low permeability Indiana limestone core of 6 in. in length and 1.5 in. in diameter, using an Instron electric compression test machine. The rough fracture surfaces created were scanned using a profilometer to characterize the etched fracture faces before and after the CFA tests. CFA tests were then conducted using a specially designed coreflood setup with the injection of 20 wt% GLDA and 15 wt% HCl at various temperature conditions. CT scans were used to characterize the grooves or channels developed in the CFA tests. The concentrations of the dissolved calcium ions were measured using Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES), and the effluent samples were titrated to determine the acid concentration. Results show that closed fractures substantially increased the core permeability under low closure stress, with limited increase under high closure stress (>1,500 psi). Surface topography of natural tensile fractures was highly correlated with initial permeability of tensile fractures and had little correlation with the changing rate of fracture permeability with closure stress; while rock embedment strength was found to be mostly associated with permeability change. 20 wt% GLDA was effective in creating a sufficient amount of flow channels to obtain substantial fracture conductivity at various closure stress conditions. Rock embedm…
  note: by Jia He.
  note: "Major Subject: Petroleum Engineering"
  note: Includes vita.
  note: Doctor of Philosophy Texas A & M University 2015 http://hdl.handle.net/1969.1/155672
  note: Includes bibliographical references.
  note: Text (Dissertation)
  subject:
    topic: Major Petroleum Engineering
  subject:
    topic: Acid fracturing
  subject:
    topic: GLDA
  subject:
    topic: Fracture conductivity
  subject:
    topic: Carbonate reservoir
  subject:
    topic: Tensile fracture
  identifier: http://hdl.handle.net/1969.1/155672
  record info:
    record content source: TXA
    record creation date: 161104
    record change date: 20170926150456.0
    record identifier: in00003724753
    language of cataloging:
      language term: eng