Automatic testing method of wire line coring drilling hoisting-free pressurized water test

Abstract

The invention relates to an automatic testing method of a wire line coring drilling hoisting-free pressurized water test. The method effectively solves the problems of accurately measuring the pressure in a pressurized water test section and fully exerting the advantages of automatic testing of the wire line coring drilling hoisting-free and pressurized water test. The method comprises the following steps of: drilling a rock by using a drilling tool, taking out the rock core when the drilled hole reaches the test length, uplifting a hollow drill rod, hoisting a pressurized water test embolismby using an inflatable rubber tube, filling the pressurized water test embolism into the hollow drill rod, making the pressurized water test embolism extend out of a drill bit at the lower part of the hollow drill rod, communicating the inflatable rubber tube and a nitrogen cylinder, charging air to the embolism, closing the hollow drill rod and the drilled hole, connecting a pressure sensor of the test section and a flow sensor outside the drilled hole to a pressurized water test comprehensive tester through cables, sealing with an orifice sealer, pressurizing water to the drilled hole section by using a water pump through the orifice sealer and the hollow drill rod, and acquiring data. According to the automatic testing method disclosed by the invention, wire line coring, pressurized water test and automatic testing are fused together, therefore the exploration quality and the exploration efficiency of deep holes in water conservancy and water electricity are greatly improved, and the labor intensity is effectively reduced.

Description

technical field [0001] The invention relates to an engineering investigation method, in particular to an automatic testing method for rope core drilling without drilling pressure water test. Background technique [0002] In engineering survey work, wireline core drilling is a very efficient drilling technology. During the drilling process, when the core is filled with the core tube, there is no need to lift the big drill, but the drill pipe is used as a channel, and by means of special fishing tools such as ropes, the material stored in the inner core tube during the drilling process is removed. The core is lifted out of the hole. Because this method does not need to lift all the drill pipes out of the hole, the time for tripping and unloading the drilling tool is greatly reduced, and the labor intensity is also greatly reduced. This technology has been widely used in mining, coal, petroleum and other industries, and has achieved remarkable results. [0003] However, due ...

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Problems solved by technology

[0003]However, due to its own particularity in water conservancy and hydropower engineering exploration, wireline core drilling technology has not been well promoted. Water conservancy and hydropower exploration usually requires various Physical and mechanical property test and hydrogeological test, among which pressure water test (5m is a test section) is a commonly used in-situ test method to obtain hydrogeological data

Usually, the pressure water test method is to lower the pressure water plug and the water injection conduit after the drilling of the hole section is completed and all the drill pipes are lifted out, and then conduct the test; this test procedure is difficult to take advantage of wireline core drilling, This test technology cannot accurately reflect the pressure in the pressurized water test section. If it can be combined with the characteristics of water conservancy and hydropower exploration, and the automatic test technology for the pressurized water test without mentioning large drills can be designed, the high-efficiency rope coring can be well realized. Drilling technology is transplanted and applied to water conservancy and hydropower exploration projects, and high-precision test data can be obtained at the same time

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