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Determining a rock formation content

A technology of siliceous rock and underground formations, applied in geophysical surveying, data processing applications, boreholes/well components, etc., can solve problems such as increasing the difficulty of drilling and completion operations, and achieve the effect of saving time and money

Active Publication Date: 2019-12-20
SAUDI ARABIAN OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, siliceous rock has high rock strength relative to many other rocks in hydrocarbon-bearing formations, and its presence in subsurface formations can make drilling and completion operations more difficult

Method used

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  • Determining a rock formation content
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  • Determining a rock formation content

Examples

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Embodiment Construction

[0027] figure 1 is a schematic diagram of an example system 100 for determining the amount of silicalite in a geological formation. Generally speaking, figure 1 A portion of one embodiment of the system 100 is shown in which a logging tool, eg, logging tool 118, may generate or record logging data for determining the amount of silicalite in a particular portion of a subterranean region. In some cases, such as figure 1 As shown, the logging tool 118 is part of or coupled to a bottom hole assembly (BHA) 120 that includes a drill bit or other borehole formation tool (eg, a laser or other instrument). In this example, the generated or recorded well log data is used by the control system 122 to calculate the amount of silicalite based at least in part on data describing the amount of quartz and zircon within a particular geological formation.

[0028] In some aspects, the system 100 can be used to derive data based at least in part on well log data collected from another borehol...

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Abstract

Techniques for determining an amount of chert in a rock formation include identifying first logging data for a selected zone of a first subterranean formation that includes chert, quartz, and zircon;identifying second logging data for a second subterranean formation that is different than the first subterranean formation, the second subterranean formation including chert, quartz, and zircon; determining a first volumetric ratio of quartz to zircon in the selected zone based on the first logging data; determining a second volumetric ratio of quartz to zircon based on the second logging data; determining a maximum value of the second volumetric ratio; and calculating, based on the first and second volumetric ratios and the maximum value of the second volumetric ratio, a volumetric percentage of chert in the selected zone.

Description

[0001] claim priority [0002] This application claims priority to US Patent Application No. 15 / 450,821, filed March 6, 2017, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates to determining the content of a rock formation, and more particularly to determining the amount of silicalite in a rock formation including quartz. Background technique [0004] Silicet is a rock with the same or similar elemental composition as quartz. As a result, conventional logging tools that measure density, neutrons, and resistivity can only identify silicalite as quartz on a subsurface formation, not the silicalite itself. However, silicalite has high rock strength relative to many other rocks in hydrocarbon-bearing formations, and its presence in subsurface formations can make drilling and completion operations more difficult. Contents of the invention [0005] The present disclosure describes implementations of metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00G01V11/00G06Q50/02
CPCG06Q50/02G06Q10/063E21B49/00G01V11/00
Inventor 阿纳斯·阿尔马佐克
Owner SAUDI ARABIAN OIL CO
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