Stratigraphic modeling device and method for suspended state hydrates

A hydrate and synthesis device technology, which is applied in the field of artificially simulating geological bodies, can solve the problems of small sample diameter and unusability, and achieve the effect of uniform heating and uniformity

Inactive Publication Date: 2014-05-07
JILIN UNIV
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Problems solved by technology

Due to the limitation of microwave penetration ability, only suspended hydrate samples with a diameter of less than 120mm can be prepared, and the sa

Method used

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  • Stratigraphic modeling device and method for suspended state hydrates
  • Stratigraphic modeling device and method for suspended state hydrates
  • Stratigraphic modeling device and method for suspended state hydrates

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and embodiment for further detailed description:

[0034] Sample vacuum saturation device: first plug the drain hole 46 provided on the bottom plate of the sample box 5, then install the sample box 3 on the bottom plate 5 of the sample box, and seal it with a rubber gasket 4, fill it with formation samples 10 and put it into a vacuum saturation cylinder 1, put in deionized water 7 and put it higher than the sample box 3, turn on the vacuum pump 8 to discharge the air in the vacuum saturation cylinder 1 through the exhaust joint 9 and the throttle valve 6 to form a negative pressure, so as to promote the discharge of the air in the formation sample 10, and accelerate Formation sample 10 reaches saturation.

[0035] Sample circulation freezing device: the low-temperature alcohol 19 cooled by the refrigeration circulation pump 12 respectively passes through the refrigeration circulation pump discharge pipeline 13, the throttle...

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Abstract

The invention relates to a stratigraphic modeling device and method for suspended state hydrates. The stratigraphic modeling device is composed of a vacuum saturation device, a freezing device, a microwave heating device, an air compression water drainage device and a hydrate synthesis device in a combined mode. A stratigraphic sample is heated evenly, the relative height of a waveguide tube and the stratigraphic sample can be adjusted, and the entire stratigraphic sample can be placed in a relatively even electromagnetic field. Rock ore particles with the microwave absorption capacity far higher than that of ice are used as the stratigraphic modeling sample. The microwave heating power and the heating time are adjusted to control the saturability of natural gas hydrates. Surface treatment is conducted on the stratigraphic sample of porous media, so that the stratigraphic sample has hydrophobicity, the hydrates only exist in the gap of the stratigraphic sample, and the fact that the surfaces of the stratigraphic sample particles are wrapped with a hydrate layer is avoided. A multilayer stacking mode is used for acquiring the suspended state hydrate stratigraphic sample with large diameter and high thickness, and a simulated stratum is provided for simulating well drilling, well measuring and hydrate mining.

Description

Technical field: [0001] The invention relates to a device and a simulation method for artificially simulating geological bodies, in particular to a simulation device for simulating a suspended natural gas hydrate formation and a simulation method for a suspended formation. technical background: [0002] Natural Gas Hydrate, commonly known as "combustible ice", is mainly composed of water molecules and methane (CH 4 ) is a snow-like crystalline compound with a cage structure composed mainly of gas molecules. Christine Ecker of Stanford University believes that the form of hydrate in nature can be divided into three forms, namely suspended state, contact state and cemented state. Due to the existence of the armor effect and the wall-climbing effect, there is a phenomenon of uneven distribution of hydrates when the hydrates are synthesized in porous media by conventional synthetic hydrate methods, and the prepared hydrates are all cemented or contacted. . However, the prepar...

Claims

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Application Information

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IPC IPC(8): E21B49/00
Inventor 何将福彭枧明张鑫鑫李莉佳罗永江甘心张强
Owner JILIN UNIV
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