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Salt bottom sticking method based on X-ray fluorescence element logging technology

A technology of element mud logging and X-ray, which is applied in the direction of material analysis, measuring devices and instruments using wave/particle radiation. Strong operability, reduced drilling risk, and improved success rate

Active Publication Date: 2018-03-16
BEIJING AOYIER ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Salt bottom sticking method based on X-ray fluorescence element logging technology
  • Salt bottom sticking method based on X-ray fluorescence element logging technology
  • Salt bottom sticking method based on X-ray fluorescence element logging technology

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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 a method for capturing salt bottom based on X-ray fluorescence element logging technology. : perform data analysis on the mudstone above and below the marker layer; step 4: discriminate by the chart; this method is mainly used for the card extraction of the bottom interface of the gypsum-salt rock of the Paleogene Kumugelimu Group in the Kuqa Depression of the Tarim Basin It plays a pivotal role in reducing the risk of drilling in gypsum-salt rock layers, ensuring the safety of drilling and drilling oil and gas layers, and achieving geological goals, and belongs to the field of geological research in 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 Patents(China)
IPC IPC(8): G01N23/223
Inventor 冯国民胡剑风何华王海姬月凤魏超峰李小龙
Owner BEIJING AOYIER ENG TECH
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