Method for rapidly recognizing mineral volume content of shale formation

A volume content and shale technology, which is applied in the field of rapid identification of mineral volume content in shale formations, can solve problems such as the inability to identify mineral volume content in shale formations, and achieve the effect of accurate identification data

Inactive Publication Date: 2016-07-27
CHENGDU CHUANGYUAN OIL & GAS TECH DEV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a method for quickly identifying the volume content of minerals in shale formations, and solve the problem that the volume content of minerals in shale formations cannot be identified

Method used

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Embodiment Construction

[0014] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail in conjunction with the following examples. The schematic embodiments of the present invention and their descriptions are only used to explain the present invention, and are not intended as a guideline for the present invention. limit.

[0015] A method for quickly identifying the volume content of minerals in shale formations of the present invention comprises the following steps:

[0016] (1) Moderate the neutron source according to the neutron capture cross-section of the mineral sample in the shale formation; the thermal neutron flux that interacts with the nucleus of the sample to be tested after the moderated neutron source reaches The position of the predetermined value is measured to obtain the standard capture gamma energy spectrum of the sample to be tested, and the mineral content of the target shale form...

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Abstract

The invention discloses a method for quickly identifying the mineral volume content of a shale formation, which comprises the following steps: 1. Obtaining the mineral content of the target shale formation; 2. Establishing a volume model of the target shale formation and constructing the described The logging response equation of the objective shale formation under different volume content parameters, and determine the error and measurement error of the logging response equation; 3. Based on the actual logging curve, logging response equation, error and measurement error of the response equation, establish a log The objective function of well interpretation; 4. Obtain the optimal volume content parameter corresponding to the minimum value, and draw the logging response forward modeling result curve and the confidence interval of the forward modeling curve corresponding to the optimal volume content parameter; 5. Check the measured Whether the well response forward modeling result curve matches the actual logging curve, the mineral volume content in the volume content parameter corresponding to the matching forward modeling result curve is taken as the determination result.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration and development, in particular to a method for quickly identifying the volume content of minerals in shale formations. Background technique [0002] The types and contents of minerals in the strata are of great significance to correctly evaluate the strata, but under the current conditions, it is difficult to accurately determine the types and contents of minerals in the strata. Chemical elements are the material basis of mineral formation, and the abundance of chemical elements in the earth's crust is closely related to the formation of minerals and their chemical composition. [0003] Although there are more than 100 kinds of elements found in the formation, studies have confirmed that the distribution of each element in the crust is extremely uneven, and only a few elements are relatively concentrated, among which O, Si, Al, Fe, Ca, Na, Mg Nine elements such as , K, and H account...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V5/10G01N23/00
CPCG01V5/10G01N23/005
Inventor 刘欢金涛
Owner CHENGDU CHUANGYUAN OIL & GAS TECH DEV
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