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Title: Electrophilic acid gas-reactive fluid, proppant, and process for enhanced fracturing and recovery of energy producing materials

Abstract

An electrophilic acid gas-reactive fracturing fluid, proppant, and process are detailed. The fluid expands in volume to provide rapid and controlled increases in pressure that enhances fracturing in subterranean bedrock for recovery of energy-producing materials. The proppant stabilizes fracture openings in the bedrock to enhance recovery of energy-producing materials.

Inventors:
; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1417893
Patent Number(s):
9,873,828
Application Number:
15/239,637
Assignee:
BATTELLE MEMORIAL INSTITUTE (Richland, WA) PNNL
DOE Contract Number:
AC05-76RL01830
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Aug 17
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; 58 GEOSCIENCES

Citation Formats

Fernandez, Carlos A., Heldebrant, David J., Bonneville, Alain, Jung, Hun Bok, and Carroll, Kenneth C. Electrophilic acid gas-reactive fluid, proppant, and process for enhanced fracturing and recovery of energy producing materials. United States: N. p., 2018. Web.
Fernandez, Carlos A., Heldebrant, David J., Bonneville, Alain, Jung, Hun Bok, & Carroll, Kenneth C. Electrophilic acid gas-reactive fluid, proppant, and process for enhanced fracturing and recovery of energy producing materials. United States.
Fernandez, Carlos A., Heldebrant, David J., Bonneville, Alain, Jung, Hun Bok, and Carroll, Kenneth C. 2018. "Electrophilic acid gas-reactive fluid, proppant, and process for enhanced fracturing and recovery of energy producing materials". United States. doi:. https://www.osti.gov/servlets/purl/1417893.
@article{osti_1417893,
title = {Electrophilic acid gas-reactive fluid, proppant, and process for enhanced fracturing and recovery of energy producing materials},
author = {Fernandez, Carlos A. and Heldebrant, David J. and Bonneville, Alain and Jung, Hun Bok and Carroll, Kenneth C.},
abstractNote = {An electrophilic acid gas-reactive fracturing fluid, proppant, and process are detailed. The fluid expands in volume to provide rapid and controlled increases in pressure that enhances fracturing in subterranean bedrock for recovery of energy-producing materials. The proppant stabilizes fracture openings in the bedrock to enhance recovery of energy-producing materials.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2018,
month = 1
}

Patent:

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  • An electrophilic acid gas-reactive fracturing and recovery fluid, proppant, and process are detailed. The fluid expands in volume to provide rapid and controlled increases in pressure that enhances fracturing in subterranean bedrock for recovery of energy-producing materials. Proppants stabilize openings in fractures and fissures following fracturing.
  • A method is described for producing hydrocarbon fluids from a subterranean formation into which at least one injection well and one production well have been drilled, respectively, the method comprising the steps of: injecting water into the formation through the injection well to form a flood front progressing through the formation, the injection of water being at a temperature and pressure such as to preclude significant fracturing of the formation; injecting a fluid into the formation after the injection of the water at a temperature substantially lower than the ambient temperature of the formation so as to reduce the inmore » situ stresses in the formation, the fluid being injected at a pressure which will propagate fractures through a region of the formation flooded by the water so as to increase the permeability thereof and the injectivity rate of the fluid for driving the flood front of the water and oil toward at least one production well.« less
  • This patent describes a method for producing hydrocarbon fluids from a subterranean formation into which at least one injection well and at least one production well have been drilled, respectively, the method comprising the steps of: injecting fluid into the formation through the injection well to form a flood front extending toward at least one production well; terminating injection of the fluid; placing gas generating means in the injection well and generating a relatively high pressure pulse of gas in the injection well to create multiple fractures in the formation extending substantially radially from the injection well but not beyondmore » the flood front; injecting a surfactant into the injection well after creating the multiple fractures to form a generally uniformly expanding flood front in the formation extending toward at least one production well; and injecting a drive fluid into the injection well to drive the slug of surfactant and hydrocarbon fluids toward at least one production well for the production of the hydrocarbon fluids.« less
  • This document describes the results that were achieved in a program to develop and evaluate a new rock-fracturing method for increasing the productivity of oil and gas reservoirs. This method, called DYNAFRAC, is based on generating and extending multiple fractures in an oil or gas formation by using a small, downhole explosive source in a very controlled manner. The almost instantaneous borehole pressurization causes multiple vertical fractures to occur in the formation before stress relief can occur from the failure of the weakest plane of fracture. The salient features of the DYNAFRAC process are compared with those of other rock-fracturingmore » methods in Section 2. Prior field tests of this process resulted in the formation of five vertical fractures in the open-hole sections of shallow, dry wells. Based on the amount of fluid displaced in these tests, it is estimated that each fracture extended approximately 5 feet into the formation and was limited only by the duration of the pressure pulse in the borehole. The results of these tests are described. The current program consisted of three principal tasks. The first task was to apply the DYNAFRAC process to at least five marginal (stripper) oil and/or gas wells to determine the productivity improvement that can be obtained using the short-radii, multiple fractures to overcome wellbore damage. The second task was to develop a method using a downhole propellant to increase the duration of the pressure and thereby extend the fracture radii further into the formation. The third task was to apply the improved DYNAFRAC process to a gas-bearing reservoir and compare the productivity improvement with that obtained by more conventional fracturing methods. The results of these tasks are described in Sections 4 to 6. Section 7 contains the conclusions and recommendations that have emerged from the tests and evaluations that were performed during the program. 72 figures, 5 tables.« less
  • This paper describes a system for controlling at a well site an apparatus, including at least one sand crew, for moving a proppant into a mixing container into which a fluid is flowed for obtaining a blend having a desired concentration of the proppant in the fluid. The blend is to be pumped into the well and the apparatus and mixing container are mounted on a trailer.