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Experimental method and experimental device for comprehensive simulation of cuttings migration in horizontal directional drilling annular space

A technology for simulating experimental devices and horizontal directional drilling, which is applied in teaching models, educational appliances, instruments, etc., can solve the problems of simulation methods and devices that have not yet appeared, and achieve the effects of saving mixing and preparing devices, saving experimental expenses, and facilitating preparation.

Active Publication Date: 2018-08-10
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

At present, there is no simulation method and device with this function

Method used

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  • Experimental method and experimental device for comprehensive simulation of cuttings migration in horizontal directional drilling annular space
  • Experimental method and experimental device for comprehensive simulation of cuttings migration in horizontal directional drilling annular space
  • Experimental method and experimental device for comprehensive simulation of cuttings migration in horizontal directional drilling annular space

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with drawings and embodiments.

[0044] The invention provides a comprehensive simulation experiment method for cuttings migration in the horizontal directional drilling annular space, which comprises the following steps:

[0045] (1) Initialization:

[0046] Put the transparent pipe horizontally, inject cuttings into the mud at a steady speed, input the mud at a steady flow rate into the injection end of the transparent pipe, observe the formation of the cuttings bed in the transparent pipe, take horizontal photos and vertical photos of the cuttings bed in the transparent pipe Take photos, measure the mud pressure and mud flow of the transparent pipeline, and record the total amount of cuttings added;

[0047] (2) Adjust the mud input speed:

[0048] Adjust the speed of mud input into the transparent pipe, observe the change of the cuttings bed in the transparent pipe, take horizontal and vertical p...

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Abstract

The invention provides a horizontal directional drilling annular rock debris migration integration simulation experiment method. The method comprises processes of initializing an apparatus, adjusting a slurry input speed, adjusting a rock debris injection speed, inclining a transparent pipeline, changing the debris with different grain sizes, vertically placing the pipeline and the like. The method is characterized by observing formation of a rock debris bed in the transparent pipeline; shooting a horizontal photograph and a vertical photograph of the rock debris bed in the transparent pipeline; measuring slurry pressure and a slurry flow in the transparent pipeline; and recording a total addition amount of the rock debris so as to analyze rock debris migration. The invention simultaneously provides an experiment apparatus based on the above method. The apparatus comprises the transparent pipeline used for observation, a slurry feeding system connected to the transparent pipeline, a rock debris injection system connected to the slurry feeding system and an inclination control system arranged outside the transparent pipeline. A motion state of the rock debris under different penetrating angle and unearthed angle conditions can be simulated, and migration simulation of the rock debris bed and single rock debris motion simulation are completed in a same set of system and experiment cost is saved.

Description

technical field [0001] The invention relates to a comprehensive simulation experiment method and an experiment device for cuttings migration in a horizontal directional drilling annular space, belonging to the field of non-excavation engineering. Background technique [0002] Horizontal Directional Drilling technology (Horizontal Directional Drilling) is to use the drilling equipment installed on the surface to drill into the stratum with a small incident angle relative to the ground to form a pilot hole, and then expand the pilot hole to the required size and lay the pipeline (line ) of a technology. At present, horizontal directional drilling technology has been widely used in municipal pipelines and large-diameter long-distance oil and gas pipelines crossing rivers. With the rapid development of my country's economy, the demand for energy continues to increase, and the size of pipes constructed by horizontal directional drilling (HDD) is also increasing. According to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B25/00
CPCG09B25/00
Inventor 闫雪峰马保松王福芝曾聪杨善
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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