Analytical method of X-ray fluorescence terrigenous clastic rock porosity in petroleum well drilling
A technology of fluorescence analysis and oil drilling, which is applied in the direction of earthwork drilling, wellbore/well components, etc.
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Embodiment 1
[0041] The method for analyzing the porosity of terrigenous clastic rocks in petroleum drilling by using X-ray fluorescence of the present invention includes performing X-ray fluorescence analysis on cores and cuttings at the drilling site, normalization processing of ferrosilicon element analysis data, porosity calculation, Data processing and technology of drawing rock porosity curve according to well depth. In this example, the X-ray fluorescence analysis data of Well A in the Ordos Basin are selected for illustration. The specific steps are as follows:
[0042] (1) X-ray fluorescence analysis of core and cuttings
[0043] The energy dispersive X-ray fluorescence analyzer is used to continuously analyze the chemical elements of the core and cuttings samples at the oil drilling site. During the analysis, the core and cuttings samples are crushed and tableted first, and then analyzed by X-ray fluorescence.
[0044] 1. Selection of analytical instruments
[0045] The analyt...
Embodiment 2
[0082] Such as figure 2 as shown, figure 2 It is a comprehensive analysis diagram of the X-ray fluorescence analysis interpretation results of drilling core samples from Well B in the Ordos Basin and the results of conventional mud logging, geophysical logging, laboratory analysis and testing.
[0083] figure 2 The contents include: 1. Formation; 2. Density—the density curve of geophysical well logging; 3. Neutron——the neutron curve of geophysical well logging; 4. Logging porosity——the density according to geophysical well logging Porosity curve calculated with neutron; 5. Well depth - drilling depth 2382-2448 meters; 6. Lithology profile - lithology profile based on comprehensive interpretation of conventional mud logging and geophysical logging; 7. Iron - X 8. Silicon—the pulse value of silicon element in X-ray fluorescence analysis; 9. X-ray porosity——the rock porosity value calculated based on the iron and silicon element values of X-ray fluorescence analysis; 10. ...
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