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Data set: Logging engineering ; Natural gas hydrate ; Saturation logging method (00.01.005)

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Full name Logging engineering ; Natural gas hydrate ; Saturation logging method

Location GD-CN

Reference year 1989

Valid until

Reference flow(s) calcium chloride - 1.0E7 * 1.0 kg (Mass)

Type Unit process, single operation

Parameterized? no

LCIA results included? no

Category Unit processes / Other Services / Engineering and consulting

Synonyms

Use advice for data set When using the data set for assessing natural gas hydrate saturation, it is important to note that the derived formulas and saturation calculations are based on specific conditions such as rock porosity, hydrate distribution, and the presence of oil and gas within the pores. Users must consider the geological context and ensure that the experimental conditions used to derive the resistivity-saturation relationship are applicable to their assessment scenario. Careful interpretation of resistivity logs in line with the given methodology is required, and users should be aware of the implications of heterogeneous anisotropic pore volumes on the resistivity measurements.

Data set use approval

General comment Based on the analysis of experimental data of hydrate resistivity and the general relationship between resistivity and oil (gas) saturation, the optimum formula for calculating hydrate saturation is derived, and the physical meanings of three items in the formula are defined, which respectively represent the increase rate of resistivity when hydrate particles are completely distributed in the pores of formation rocks, supported by particles and existed in layers, and the corresponding quantitative evaluation method of hydrate saturation is established

LCI Method Principle Attributional

LCI Method Approaches No records found.

Completeness of product model No statement

Reviews Dependent internal review by Tiangong LCI Data Working Group

License and access conditions Copyright no License type Free of charge for all users and uses

Owner of data set Tiangong LCI Data Working Group

Technical purpose The saturation logging method described is used for the quantitative evaluation of hydrate saturation in natural gas hydrate exploration within geological formations, specifically in the South China Sea region. The method involves analyzing resistivity measurements to calculate the percentage of natural gas hydrates within porous rock formations. This process is crucial for determining the scale of natural gas reserves and can be applied during well-logging phases to assess potential extraction volumes.

Input Products No records found.

Co-Products No records found.

Data set version 00.01.005

Time stamp (last saved) 2024-03-20T12:54:05+08:00

Data set format

Compliance systems No records found.

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Registry name	Base URL	Status
GLAD	https://www.globallcadataaccess.org/

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