Hole forming method for repeated utilization of main hole and casing pipe of curtain grouting cluster well drill hole

Hole forming method for repeated utilization of main hole and casing pipe of curtain grouting cluster well drill hole

The invention discloses a hole forming method for repeated utilization of a main hole and a casing pipe of a curtain grouting cluster well drill hole. The method comprises the following steps that a ground directional drilling machine is used for constructing a first layer curtain horizontal directi...

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Hauptverfasser: LI XIAOLONG, QIN YIPU, WEN PENGJUN, WANG XIAOGANG, FANG GANG, MA LIUZHU, HAN DINGFENG, ZHAI QIN
Format: Patent
Sprache:chi ; eng
Schlagworte:
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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creator LI XIAOLONG
QIN YIPU
WEN PENGJUN
WANG XIAOGANG
FANG GANG
MA LIUZHU
HAN DINGFENG
ZHAI QIN
description The invention discloses a hole forming method for repeated utilization of a main hole and a casing pipe of a curtain grouting cluster well drill hole. The method comprises the following steps that a ground directional drilling machine is used for constructing a first layer curtain horizontal directional drill hole; the technical casing is sealed in a positive circulation mode in a ground grouting mode; drilling a horizontal section, and carrying out grouting curtain operation; the hole is swept to the position, without cement, of an annulus of the deflecting section, the secondary-opening technical casing is cut open in the drilling deflecting section through a casing cutter, and the cut technical casing is pulled out to the ground through a drilling machine; thick cement grout is adopted to seal the drill hole to the hole opening, and solidification is reasonable for the first time; and deflecting construction is carried out again for curtain directional drilling at different layers, and the steps are circul
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subjects EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
title Hole forming method for repeated utilization of main hole and casing pipe of curtain grouting cluster well drill hole
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