Synchronous measurement reactor for dynamic-static mechanical parameters of hydrate sediment and measurement method

Abstract

The invention discloses a synchronous measurement reactor for dynamic-static mechanical parameters of a hydrate sediment and a measurement method and relates to the field of testing of basic physicalproperties of natural gas hydrates. The synchronous measurement reactor comprises a shell, and further comprises a body component arranged in the shell, two opposite side components arranged on sidesof the shell, an upper cover component arranged at the top of the shell, and a lower cover component arranged at the bottom of the shell. The synchronous measurement reactor for dynamic-static mechanical parameters of the hydrate sediment has the beneficial effects of integrating TDR testing, soundwave testing and stress strain testing and eliminating estimation errors cause by the fact that the existing mechanical parameter testing method estimates saturation of a sediment by using water content directly; and jointly applying an ultrasonic detection technology to a triaxial test and acquiringsaturations of different hydrates and soundwave parameters of a sedimentary system under different shear failure conditions in real time, so as to provide powerful support data for a triaxial mechanical property test and better provide explanation basis for dynamic changes of a hydrate-containing sedimentary system.

Description

technical field [0001] The invention relates to the field of natural gas hydrate basic physical property testing, in particular to synchronous acquisition of dynamic strength parameters and static strength parameters of hydrate-containing sediments through indoor triaxial tests, in particular to a reactor for synchronous measurement of dynamic-static mechanical parameters of hydrate sediments and measurement methods. Background technique [0002] The mechanical properties of gas hydrate reservoirs are the basic information needed to explain and solve the engineering geological problems involved in the energy extraction of gas hydrates. At present, there are three main methods for studying the mechanical properties of gas hydrate reservoirs: indoor triaxial / uniaxial Axial compression test, estimation by empirical formula based on well logging data, and prediction by numerical simulation methods such as discrete element method, among which the reservoir mechanical data obtaine...

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Problems solved by technology

[0005] Theoretically speaking, an integrated method for obtaining dynamic and static mechanical parameters of hydrate-containing sediments can be established by means of laboratory test simulation. However, due to the limitation of sample preparation conditions, it is impossible to simultaneously synthesize completely consistent hydrate-containing sediment samples in different test systems. Therefore, it is necessary to establish a natural gas hydrate sediment animal. -Integrated test system for static mechanical properties and corresponding evaluation methods

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