Ice layer pore wall coring system and method

Abstract

The invention discloses an ice layer pore wall coring system and method. The ice layer pore wall coring system comprises an electric generator, an earth surface control system and a pore wall coring drilling tool, wherein the electric generator is connected with the earth surface control system, and the earth surface control system is connected with the pore wall coring drilling tool through an armored cable. The coring method comprises the steps that step one, the pore wall coring drilling tool is lowered to a pore inner designated position; step two, the earth surface control system gives aninstruction to a pore inner electrical unit to stop power supply to a supporting electric push rod; step three, the earth surface control system stops power supply to a coring electric push rod through the pore inner electrical unit; step four, a hot melting drill bit is driven to descend in an ice layer for hot melting and coring; step five, power of the hot melting drill bit is cut to enable the hot melting drill bit to stop working; step six, a push rod in the supporting electric push rod is taken back into a sleeve; and step seven, the coring work is finished. The ice layer pore wall coring system and method have the beneficial effects that the structure is simple and compact, the weight is light, the size is small and transportation is convenient, no pollution to the environment is achieved, and earth equipment can be shared with existing drilling equipment.

Description

technical field [0001] The invention relates to a coring system and a coring method, in particular to a coring system and a coring method for an ice hole wall. Background technique [0002] At present, the polar ice contains a large number of microorganisms, tiny animal and plant limbs, volcanic ash particles, and various dust particles wrapped in the atmosphere, which record the composition of the atmosphere in ancient times and are usually used to study past climate changes. Deep ice cores can provide accurate ancient climate information, and many problems of paleoclimate environment can be solved through ice core research. Therefore, ice core data is an important basis for studying past climate change and predicting future climate change. [0003] With the rapid development of polar scientific research, the demand for ice cores is increasing, especially to obtain extra ice cores in a certain well section, which has attracted widespread attention of scientists. First, fo...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of abnormal difficulty in directional drilling of ice hole wall and extremely inconvenient field operation in conventional oil and gas well deflection method, and provide a kind of ice layer hole wall coring system and coring method

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