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Title: Method and apparatus for in situ determination of permeability and porosity

Abstract

A method and apparatus for in situ measurement of flow characteristics in boreholes or the like is disclosed for determining various formation characteristics such as permeability, particularly in the range of approximately 100-1,000 microdarcies and lower. One embodiment of the method and apparatus contemplates formation of a test interval in the borehole by a pair of expandable packers, additional guard zones being formed in the borehole at either end of the test interval by two additional guard packers, suitable flow conditions being simultaneously and separately measured within the test interval and each of the guard zones in order to permit determination of multidirectional components of permeability, porosity and other characteristics of the particular formation. Another embodiment contemplates whole hole testing where similar data is developed for a test interval formed between a single packer and the end of the borehole and one guard zone formed by a single additional guard packer. The method and apparatus of this invention are particularly contemplated for obtaining unambiguous measurements of multidirectional flow in low permeability formations.

Inventors:
 [1];  [2]
  1. (Olivehain, CA)
  2. (Del Mar, CA)
Issue Date:
OSTI Identifier:
864358
Patent Number(s):
4353249
Application Number:
06/202,076
Assignee:
Systems, Science and Software (San Diego, CA) OSTI
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; situ; determination; permeability; porosity; measurement; flow; characteristics; boreholes; disclosed; determining; various; formation; particularly; range; approximately; 100-1; 000; microdarcies; embodiment; contemplates; interval; borehole; pair; expandable; packers; additional; guard; zones; formed; suitable; conditions; simultaneously; separately; measured; permit; multidirectional; components; particular; testing; similar; data; developed; single; packer; zone; contemplated; obtaining; unambiguous; measurements; formations; flow conditions; situ measurement; situ determination; flow characteristics; /73/

Citation Formats

Lagus, Peter L., and Peterson, Edward W. Method and apparatus for in situ determination of permeability and porosity. United States: N. p., 1982. Web.
Lagus, Peter L., & Peterson, Edward W. Method and apparatus for in situ determination of permeability and porosity. United States.
Lagus, Peter L., and Peterson, Edward W. Tue . "Method and apparatus for in situ determination of permeability and porosity". United States. https://www.osti.gov/servlets/purl/864358.
@article{osti_864358,
title = {Method and apparatus for in situ determination of permeability and porosity},
author = {Lagus, Peter L. and Peterson, Edward W.},
abstractNote = {A method and apparatus for in situ measurement of flow characteristics in boreholes or the like is disclosed for determining various formation characteristics such as permeability, particularly in the range of approximately 100-1,000 microdarcies and lower. One embodiment of the method and apparatus contemplates formation of a test interval in the borehole by a pair of expandable packers, additional guard zones being formed in the borehole at either end of the test interval by two additional guard packers, suitable flow conditions being simultaneously and separately measured within the test interval and each of the guard zones in order to permit determination of multidirectional components of permeability, porosity and other characteristics of the particular formation. Another embodiment contemplates whole hole testing where similar data is developed for a test interval formed between a single packer and the end of the borehole and one guard zone formed by a single additional guard packer. The method and apparatus of this invention are particularly contemplated for obtaining unambiguous measurements of multidirectional flow in low permeability formations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {10}
}

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