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Systems and methods for computing surface of fracture per volume of rock

A technology per unit surface area and unit volume, applied in the field of drilling boreholes

Inactive Publication Date: 2014-12-17
PRAD RES & DEV LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While borehole images provide measurements that contain a wealth of data about the subsurface, extracting the underlying geological and petrophysical knowledge remains a challenge

Method used

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  • Systems and methods for computing surface of fracture per volume of rock
  • Systems and methods for computing surface of fracture per volume of rock
  • Systems and methods for computing surface of fracture per volume of rock

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Embodiment Construction

[0018] Unless otherwise defined, all scientific and technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there are multiple definitions for a term herein, those in this section control unless otherwise stated.

[0019] All uses of "for example", "such as", "including" or similar phrases herein should be read as followed by the term "without limitation" unless expressly stated otherwise. Thus, "such as a mud turbine generator" means "such as and without limitation a mud turbine generator".

[0020] The terms "comprising" and "including" and "involving" are used interchangeably and mean the same. Specifically, each of said terms is defined to be consistent with the meaning of "comprising" as defined in U.S. Patent Law, and thus be interpreted as open-ended terms meaning "at least the following" and also interpreted as not excluding other Features, constraints, aspects, etc.

[0021] Th...

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PUM

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Abstract

Systems and methods for estimating surface of fracture per volume of rock are provided. The systems include a logging tool, such as a resistivity tool, for generating a borehole image representative of segments of fractures in one or more planes and a processor for estimating surface of fracture per volume of rock (P32) from the segments without the need for defining the one or more planes bearing the segments. The methods include using a downhole logging tool, such as a resistivity tool, to collect data corresponding to segments of fractures in one or more planes, and estimating surface of fracture per volume of rock (P32) by reconstructing theoretical elliptical fractures from the segment data, calculating length of fracture segment per surface of borehole (P21) for the theoretical elliptical fractures, and deriving P32 from P21.

Description

technical field [0001] This invention relates to drilling boreholes in subterranean formations. The present invention also relates to systems and methods for analyzing wellbore productivity. Background technique [0002] Oil prices continue to rise, in part because demand for oil continues to grow and there is a lack of steady sources of oil. Oil companies continue to develop new tools to generate data from wellbores, hoping to use this data to increase productivity, reduce costs, and / or streamline operations by converting this data into meaningful information. [0003] Borehole images are a key component of the wireline business (e.g., Schlumberger’s FMI TM , Formation Microscanner, OMBI TM tools), and logging-while-drilling services (such as Schlumberger's GeoVision TM , RAB drill bit resistivity, ARC5 array resistivity compensation tool) is an increasingly important part. While borehole images provide measurements that contain a wealth of data about the subsurface, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/20
CPCG01V3/20E21B47/0025E21B49/02
Inventor A·埃切科帕尔D·克萨达I·莱尼
Owner PRAD RES & DEV LTD