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Title: Fluid outlet at the bottom of an in situ oil shale retort

Abstract

Formation is excavated from within the boundaries of a retort site in formation containing oil shale for forming at least one retort level void extending horizontally across the retort site, leaving at least one remaining zone of unfragmented formation within the retort site. A production level drift is excavated below the retort level void, leaving a lower zone of unfragmented formation between the retort level void and the production level drift. A plurality of raises are formed between the production level drift and the retort level void for providing product withdrawal passages distributed generally uniformly across the horizontal cross section of the retort level void. The product withdrawal passages are backfilled with a permeable mass of particles. Explosive placed within the remaining zone of unfragmented formation above the retort level void is detonated for explosively expanding formation within the retort site toward at least the retort level void for forming a fragmented permeable mass of formation particles containing oil shale within the boundaries of the retort site. During retorting operations products of retorting are conducted from the fragmented mass in the retort through the product withdrawal passages to the production level void. The products are withdrawn from the production levelmore » void.« less

Inventors:
 [1]
  1. (Grand Junction, CO)
Issue Date:
Research Org.:
Occidental Oil Shale, Inc. (Grand Junction, CO)
OSTI Identifier:
864935
Patent Number(s):
4440445
Assignee:
Occidental Oil Shale, Inc. (Grand Junction, CO) OSTI
DOE Contract Number:  
FC20-78LC10036
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fluid; outlet; bottom; situ; oil; shale; retort; formation; excavated; boundaries; site; containing; forming; level; void; extending; horizontally; leaving; remaining; zone; unfragmented; production; drift; below; plurality; raises; formed; providing; product; withdrawal; passages; distributed; uniformly; horizontal; section; backfilled; permeable; mass; particles; explosive; placed; detonated; explosively; expanding; fragmented; retorting; operations; products; conducted; withdrawn; explosively expanding; expanding formation; permeable mass; formation particles; fragmented permeable; production level; particles containing; containing oil; retort site; fragmented mass; situ oil; shale retort; oil shale; unfragmented formation; level void; formation containing; level drift; retorting operations; fluid outlet; extending horizontally; retorting operation; particles contain; /299/

Citation Formats

Hutchins, Ned M. Fluid outlet at the bottom of an in situ oil shale retort. United States: N. p., 1984. Web.
Hutchins, Ned M. Fluid outlet at the bottom of an in situ oil shale retort. United States.
Hutchins, Ned M. Sun . "Fluid outlet at the bottom of an in situ oil shale retort". United States. https://www.osti.gov/servlets/purl/864935.
@article{osti_864935,
title = {Fluid outlet at the bottom of an in situ oil shale retort},
author = {Hutchins, Ned M.},
abstractNote = {Formation is excavated from within the boundaries of a retort site in formation containing oil shale for forming at least one retort level void extending horizontally across the retort site, leaving at least one remaining zone of unfragmented formation within the retort site. A production level drift is excavated below the retort level void, leaving a lower zone of unfragmented formation between the retort level void and the production level drift. A plurality of raises are formed between the production level drift and the retort level void for providing product withdrawal passages distributed generally uniformly across the horizontal cross section of the retort level void. The product withdrawal passages are backfilled with a permeable mass of particles. Explosive placed within the remaining zone of unfragmented formation above the retort level void is detonated for explosively expanding formation within the retort site toward at least the retort level void for forming a fragmented permeable mass of formation particles containing oil shale within the boundaries of the retort site. During retorting operations products of retorting are conducted from the fragmented mass in the retort through the product withdrawal passages to the production level void. The products are withdrawn from the production level void.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

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