Calculation method of water saturation of variable rock electrical coupling index

A technology of coupling index and calculation method, which is applied in earthwork drilling, measurement, wellbore/well components, etc., can solve the problem of narrowing of calculation model adaptability, poor stability of calculation model calculation results, and inaccurate calculation accuracy of Archie's formula. Advanced problems, to achieve the effect of improving general adaptability, wide adaptability and improving accuracy
CN103527172BInactive Publication Date: 2016-07-06CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
Publication Date
2016-07-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a variable rock-electricity coupling index water saturation calculation method, comprising the following steps: a. establishing a new water saturation calculation model; b. establishing a saturation core database; c. information on the saturation core database Carry out excavation and establish the rock-electricity coupling index calculation chart; d. Process the newly input logging data to obtain the rock-electricity coupling index of the newly input logging data; e. Use the rock-electricity coupling index obtained in step d for step The calculation model in a, which calculates the water saturation of the new input log data. The present invention proposes the concept of rock-electric coupling index for the first time, finds a corresponding calculation method, and achieves the purpose of improving calculation accuracy.
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Description

technical field

[0001] The invention relates to a method for calculating water saturation of variable rock electrical coupling index, which is used for processing petroleum geological logging data. Background technique

[0002] An important content in the processing of petroleum geological logging data is the calculation of water saturation. At present, there are more than 30 calculation models, all of which are derived from the Archie formula. For different regions and different geological bodies, the evolution of these calculation models is generally inseparable from the following three points: Odd formula for shale correction; ② Archie formula for salinity correction; ③ Archie formula for temperature correction. For example, "Logging Technology" in the 05th issue of 2007 disclosed the calculation method of water saturation index n value, and studied the calculation method of water saturation index n value of different samples under different experimental conditions. Acc...

Claims

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