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Natural gas hydrate gas sampling device

A gas sampling and natural gas technology, applied in sampling devices, sampling, measuring devices, etc., can solve problems such as wellbore flow field flow changes, blowout accidents, natural gas hydrate exploration and development risks, etc., and achieve a compact and complete structure with reduced kinetic energy Effect

Inactive Publication Date: 2021-01-12
SOUTHWEST PETROLEUM UNIV +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the drilling process, the decomposition of subsea natural gas hydrates is likely to cause changes in the flow field in the wellbore, and in severe cases, blowout accidents may occur, bringing huge risks to the exploration and development of natural gas hydrates

Method used

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  • Natural gas hydrate gas sampling device
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Embodiment Construction

[0027] The present invention is further described below according to the accompanying drawings, so as to facilitate the understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, they are protected within the scope of the present invention. List.

[0028] see figure 1 , figure 2 , image 3 .

[0029] A gas sampling device for natural gas hydrate, consisting of a simulated casing 16, a simulated drill pipe 17, a motor 10, a reducer 11, a cuttings storage chamber 7, a liquid flow meter 3, a water pump 2, a water storage tank 1, a gas-liquid-solid It consists of a three-phase separator 35, a fluidized bed dryer 36, a nylon collection barrel 37, a cuttings collection barrel 38, an air inlet, an air ...

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Abstract

The invention relates to a natural gas hydrate gas sampling device, and the device is composed of a simulation sleeve 16, a simulation drill rod 17, a motor 10, a rock debris storage chamber 7, a liquid flow meter 3, a water pump 2, a water storage tank 1, a gas-liquid-solid three-phase separator 35, a gas filling port, an air pump 13 and a natural gas sampler. The simulation drill rod is disposedin the simulation sleeve, and is connected with the motor; a mixture inlet and a mixture outlet are formed in two ends of the simulation sleeve; the mixture inlet is connected with the rock debris storage chamber, the liquid flowmeter, the water pump and the water storage tank, the outlet is connected with the gas-liquid-solid three-phase separator, and the three-phase separator is connected withthe water storage tank; the simulation sleeve is provided with three gas filling ports; an arc-shaped baffle, a sliding rail and an adjustable screw are arranged at an inlet of the natural gas sampler, fixed baffles, adjustable baffles and adjustable bolts are arranged at two ends, parallel baffles are arranged in the sampler, and an outlet is connected with a gas flowmeter. Basic data and theoretical support are provided for solving the drilling risk caused by flow change of a flow field in a shaft due to natural gas hydrate decomposition.

Description

technical field [0001] The invention relates to a gas sampling device for natural gas hydrate in the drilling process of natural gas hydrate. Background technique [0002] Natural gas hydrate, also known as "flammable ice", is an ice-like clathrate compound formed by light hydrocarbon molecules such as methane molecules and water molecules under high pressure and low temperature conditions. Most of them are light-colored crystals, which can be ignited like alcohol. . As a clean energy with huge resource potential, natural gas hydrate has received extensive attention from all over the world since the 1980s. Natural gas is distributed all over the world, mainly in the seabed and in the permafrost areas, continental slopes, land-based and so on in the Arctic. However, in the process of drilling, the decomposition of submarine natural gas hydrates can easily cause changes in the flow field in the wellbore, and in severe cases, blowout accidents will occur, which brings huge ri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22
CPCG01N1/2294
Inventor 魏纳邱彤赵金洲张烈辉周守为付强庞维新姚海元
Owner SOUTHWEST PETROLEUM UNIV
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