Device and method for measuring ground stress by using core of oil well

Abstract

The invention relates to a device and a method for measuring ground stress by using a core of an oil well. According to the technical scheme, an adjustable screw seat is arranged on the bottom of an experimental flat plate; a leveller, a laser transmitter, a light filter, a single-slit structure, a double-slit structure, a light shading barrel, a light screen and a micrometering eyepiece are sequentially arranged on the upper portion of the experimental flat plate; the leveller detects whether the experimental flat plate is horizontal or not through air bubbles in the leveller; the laser transmitter transmits monochromatic light with the wavelength of lambda; red light with the long wavelength is used; the single-slit structure is used for forming a line light source; and the micrometering eyepiece is used for measuring distances among a plurality of bright rays. The device for measuring the ground stress by using the core of the oil well has the advantages that the device is reasonable in design, simple in structure, easy to operate, easy to machine and manufacture, convenient to carry and low in cost and can measure strain of rock accurately, the magnitude of the ground stress can be determined through petrophysics parameters, and the device has an important guidance significance on high-efficiency development of an oilfield. Moreover, the device is convenient to carry and high in practicality, and can be used in a drill core store of the oilfield.

Description

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AI Technical Summary

Benefits of technology

In this new technology, there's an improved way that helps predict how well rocks will break down under different conditions during their formation or use time period. By measuring these changes over time, scientists may make informed decisions about developing more efficient ways of producing hydrocarbons from shale formations.

Problems solved by technology

This patented describes different ways to improve understanding how pressure from underground formations changes over time during petroleum exploitation or development processes. By studying this change through analysis of its effects on fluid flow dynamics, we aim to creating detailed layers called stresses along which the movement of fluids occurs. These strands are then analyzed by means like sonication techniques, density measurements, and other tools to determine their properties. Overall, these technical problem addressed involves accurately measuring the strength (pressure) at specific locations within the rock mass without requiring expensive equipment or complicated procedures.

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