Mechanical property measuring device for natural gas hydrates

A natural gas and hydrate technology, which is applied in the direction of applying stable shear force to test the strength of materials and the preparation of test samples, and can solve problems such as threats to the safety of offshore engineering, platform tilt, and uneven bearing capacity of natural gas hydrate formations

Active Publication Date: 2015-03-11
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The harmfulness of gas hydrate is also manifested in that its decomposition will lead to uneven bearing capacity of the formation. This uneven bearing capacity will th...

Method used

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  • Mechanical property measuring device for natural gas hydrates
  • Mechanical property measuring device for natural gas hydrates

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Embodiment

[0020] The embodiment of the natural gas hydrate mechanical property measurement device of the present invention includes a hydrate reaction kettle, a sediment sample preparation and molding system, a constant temperature control system, a natural gas pressurized intake system, a vacuum system and a data acquisition system.

[0021] see figure 1 , figure 1 It is a structural schematic diagram of the device for measuring the mechanical properties of natural gas hydrate in this embodiment.

[0022] The above-mentioned hydrate reaction kettle includes a reaction kettle base 17 , a rubber membrane 19 , an end cover 20 , a booster rod 22 , a built-in heat exchanger 23 , a reaction kettle shell 24 and a reaction force frame 25 .

[0023] The reactor shell 24 and the reactor base 17 are connected by bolts and sealed by a sealing ring. The end cap 20 is connected with the reactor base 17 through a spiral stainless steel pipeline. The afterburner rod 22 penetrates from the top of th...

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Abstract

The invention discloses a mechanical property measuring device for natural gas hydrates. The device comprises a data collecting system, a vacuum pumping system, a natural gas pressurization air inlet system and a hydrate reaction still, wherein the hydrate reaction still comprises a reaction still base, an end cover, a force applying rod, a reaction still casing and a reaction bracket, the reaction still casing and the reaction still base are connected through a bolt and are sealed through a sealing ring, the end cover is connected with the reaction still base through a spiral stainless steel pipeline, the force applying rod penetrates in from the top part of the reaction still casing and is sealed through a sealing ring, one end of the force applying rod is propped against the end cover, the other end of the force applying rod is propped against the reaction bracket, a first inlet/outlet and a second inlet/outlet are formed in the end cover, a third inlet/outlet and a fourth inlet/outlet which penetrate through the center of a boss of the reaction still base are formed in the reaction still base, and the four inlets/outlets are connected with the vacuum pumping system and the natural gas pressurization air inlet system. The measuring device can be used for measuring the mechanical property of solids in situ under the conditions of high pressure and low temperature, the usage range of the existing device is expanded, and the measurement accuracy is improved.

Description

technical field [0001] The invention relates to a test device for the mechanical properties of natural gas hydrate, in particular to a device for measuring the mechanical properties of solids in situ under high pressure and low temperature. Background technique [0002] Gas hydrate is an ice-like solid formed by gas (or volatile liquid) and water under certain temperature and pressure conditions, commonly known as combustible ice, widely distributed in the sediments below the surface of the tundra and under the seabed at the continental margin middle. Natural gas hydrate has huge natural gas storage capacity. The ideal structure type I methane hydrate contains 164 times the methane gas in the standard state, and the type II structure gas hydrate contains 184 times the natural gas in the standard state. The natural gas hydrate reserves in the world are very huge, and the natural gas resources in hydrates are estimated to be 2×10 16 m 3 , equivalent to 2×10 5 100 million t...

Claims

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Application Information

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IPC IPC(8): G01N3/24G01N1/28
Inventor 李栋梁梁德青卢静生
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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