ENHANCEMENT OF FLOW RATES THROUGH POROUS MEDIA

Especially in loose soils, driving a drive-point apparatus into the ground can create a leakage path in which liquid injected out into the ground tends not to spread laterally but to squirt upwards towards the surface; a packer is provided, to seal between the tube of the drive-point apparatus and t...

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Bibliographische Detailangaben
1. Verfasser:	DAVIDSON, BRETT CHARLES
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING DISPOSAL OF SOLID WASTE EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOWOF GASES OR LIQUIDS FLUID-PRESSURE ACTUATORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS RECLAMATION OF CONTAMINATED SOIL RECLAMATION OF CONTAMINED SOIL SOIL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	Especially in loose soils, driving a drive-point apparatus into the ground can create a leakage path in which liquid injected out into the ground tends not to spread laterally but to squirt upwards towards the surface; a packer is provided, to seal between the tube of the drive-point apparatus and the ground material. The prevention of such leakage is especially important when the injection is being done by cyclic pulsing, especially by out-and-back surge-pulsing. Tout particulièrement dans des sols meubles, linsertion dun appareil à pointe filtrante dans le sol peut créer une ligne de fuite dans laquelle du liquide injecté dans le sol a tendance à ne pas se répandre latéralement, mais plutôt à gicler vers le haut, vers la surface. De plus, une garniture détanchéité est prévue pour créer un joint entre le tube de lappareil à pointe filtrante et le sol. La prévention dune telle fuite est tout particulièrement importante lorsque linjection se fait par pulsion cyclique, spécialement par pulsion de pression aller-retour.