Horizontal geological survey equipment adopting coiled tubing and coring method

Abstract

The invention discloses horizontal geological survey equipment adopting a continuous pipe and a coring method. The equipment comprises a chassis, a drilling rig, a power head, the continuous pipe, a conveying mechanism, an outer drilling rod, coring equipment and a winding drum assembly. A guide drilling tool and an inner flat and hollow outer drilling rod are used for conducting guide drilling; the coiled tubing is conveyed in an area needing coring or geological exploration; the continuous pipe can carry the coring cylinder or other geological exploration equipment to be conveyed to a drilling position; the high-pressure fluid conveyed by the continuous pipe drives the coring equipment so as to drive the drilling machine to carry out horizontal coring or other geological exploration requirements. Different from a rope used in a traditional rope coring process, the continuous pipe is dragged, conveyed and corrected through the power head assembly and the conveying mechanism winding drum assembly, so that high-pressure fluid in the continuous pipe drives coring equipment, and a coring drilling tool in the coring equipment is efficiently conveyed; the problem that a coring drilling tool is difficult to convey in a horizontal hole is effectively solved, and the horizontal coring drilling efficiency of equipment is improved.

Description

technical field [0001] The invention belongs to the technical field of horizontal drilling equipment, and in particular relates to a horizontal geological survey equipment and a coring method using a coiled pipe. Background technique [0002] With the continuous investment in national infrastructure construction, the demand for the construction of road and railway tunnels, subways and cross-sea tunnels continues to surge. Detailed and accurate geological data are required for the determination of route planning, construction, and support schemes of tunnel engineering, and it is essential to explore underground engineering geology and underground resources. Compared with vertical drilling, horizontal geological exploration methods have gradually replaced vertical drilling in terms of drilling efficiency and construction cost in recent years, and have played a very important role in geological exploration. [0003] The existing horizontal rope coring technology utilizes a cor...

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Problems solved by technology

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a horizontal geological survey equipment and a coring method using coiled tubing. Coiled tubing is used for traction, transmission and straightening, so that the high-pressure fluid in the coiled tubing drives the coring equipment, thereby efficiently transporting the core drilling tools in the coring equipment, effectively solving the difficult problem of conveying the core drilling tools in horizontal holes , which greatly improves the horizontal core drilling efficiency of the equipment and reduces the comprehensive construction cost

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