Shale reservoir ground stress prediction and modeling method

Abstract

The invention discloses a shale reservoir ground stress prediction and modeling system, which comprises a single chip microcomputer controller and an integrated data collector, wherein the single chip microcomputer controller is electrically connected with the integrated data collector, a data processor, an RAM memory, an ROM memory, a database, a timer and a wireless radio frequency transceiver respectively; the output end of the single chip microcomputer controller is electrically connected with the input end of a stress simulator; the wireless radio frequency transceiver is connected with an external device through a GPRS network; the input end of the first data collector is electrically connected with the output end of a distance sensor; the input end of the second data collector is electrically connected with the output end of a pore pressure sensor; the input end of the third data collector is electrically connected with the output end of a stress sensor; and the input end of the fourth data collector is electrically connected with the output end of a strain sensor. the intelligent degree is high, and modeling and analysis on the shale reservoir ground stress can be effectively carried out.

Description

technical field [0001] The invention belongs to the technical field of shale gas exploitation, and in particular relates to a shale reservoir ground stress prediction modeling method. Background technique [0002] At present, the development and utilization of conventional energy has gradually failed to meet the development needs of modern industry, and the focus of exploration and development is on shale gas, which is difficult to exploit. Shale is a kind of sedimentary rock with complex composition, but all have thin sheet-like or thin-sheet joints. It is mainly a rock formed by clay deposition under pressure and temperature, but it is mixed with quartz, feldspar debris and other minerals. Shale reservoir is a kind of tight reservoir with low porosity and ultra-low permeability, and its production depends entirely on the effect of fracturing. For shale fracturing construction, it is necessary to have sufficient understanding of the law of shale crack initiation, and the i...

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Problems solved by technology

Therefore, the calculation results are not very accurate, and the description of the in-situ stress is not comprehensive. The reading and measurement of hole data are mostly operated by st

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