X-ray fluorescence element well logging technology-based salt bottom clamp taking method

An element logging and X-ray technology, which is used in material analysis, instruments, and measuring devices using wave/particle radiation. The risk of drilling, improving the success rate, and the effect of strong on-site operability

Active Publication Date: 2015-11-11
BEIJING AOYIER ENG TECH
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Problems solved by technology

However, with the development of drilling technology, such as the application of PDC drill bits, the difference in drilling speed becomes less obvious; the cuttings returned from the bottom of the well are also very fine, making it difficult to identify lithology by cuttings logging; it is also not conducive to formation Contrast, so it is still difficult to get the salt bottom interface

Method used

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  • X-ray fluorescence element well logging technology-based salt bottom clamp taking method
  • X-ray fluorescence element well logging technology-based salt bottom clamp taking method
  • X-ray fluorescence element well logging technology-based salt bottom clamp taking method

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Experimental program
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Embodiment

[0024] Embodiment: a kind of salt bottom sticking method based on X-ray fluorescence element mud logging technology, comprises the following steps:

[0025] Step 1: Analyze the chemical elements in mudstone by X-ray fluorescence element logging technology, and use X-ray element logging technology to analyze Na, Mg, Al, Si, P, S, Cl, K, Ca, Ba, Ti, Mn, Fe, V, Ni, Sr, Zr, these 17 kinds of elements, so as to obtain the content of each element in the mudstone, and use the major elements to name the lithology; the X-ray fluorescence element logging technology is through the element geochemical Compositional analysis for lithology identification. The main component of sandstone is SiO2, so Si element is enriched in sandstone; the content of Al, Fe and other elements is very high in mudstone rich in clay minerals. The chemical composition of pure limestone is CaCO3, and Ca is enriched in limestone; the chemical composition of pure dolomite (dolomite) is MgCa(CO3)2, and Mg and Ca ar...

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Abstract

The invention discloses an X-ray fluorescence element well logging technology-based salt bottom clamp taking method. The method comprises the following steps: 1, carrying out lithology naming by using a major element; 2, determining an element marker layer by using a trace element; 3, carrying out data analysis on mud rocks above and under the marker layer; 4, discriminating by using a plate. The method is mainly used for clamp taking of the bottom interface of gypsum-salt rocks of Eogene Kumugeliemu Group in Kuqa Depression of Tarim Basin, can reduce the gypsum-salt rock drilling risk, guarantees the safe drilling of the oil gas layer of a drilling well, plays an important role in realization of geologic purposes, and belongs to the field of geology research of petroleum exploration.

Description

technical field [0001] The invention relates to a layer-stuck method of mud logging technology, in particular to a salt-bottom stuck method based on X-ray fluorescence element mud logging technology. Background technique [0002] At present, in the Dabei-Keshen block of the Kuqa Depression in the Tarim Basin, there are huge thick gypsum-salt formations. The characteristics of tight lithology, high breakthrough pressure and high formation pressure firmly seal the lower ultra-high pressure gas reservoir. There is a huge difference in pressure system between it and the underlying formation (target layer), which brings a very large construction risk to the drilling project. At present, when drilling in the gypsum-salt rock formation in the piedmont wells of the Kuqa Depression, saturated brine drilling fluid or oil-based drilling fluid is mainly used for drilling, and the technical casing is used to seal the gypsum-salt rock formation. If the salt layer is not drilled and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/223
Inventor 冯国民何华姬月凤魏超峰李小龙
Owner BEIJING AOYIER ENG TECH
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