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Natural gas hydrate heat injection-replacement combined simulation mining device and method

A technology for simulating production and hydrates, applied in the direction of production fluid, earthwork drilling, wellbore/well components, etc., which can solve the problems of low replacement efficiency and high cost of heat injection

Pending Publication Date: 2021-01-19
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the replacement method is a high-quality method for sequestering gas and extracting energy at the same time in the single mining method, but its replacement efficiency is low, while the heat injection method has quick effect and high cost. Combining the two for joint mining can improve the replacement mining efficiency

Method used

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  • Natural gas hydrate heat injection-replacement combined simulation mining device and method
  • Natural gas hydrate heat injection-replacement combined simulation mining device and method
  • Natural gas hydrate heat injection-replacement combined simulation mining device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Such as figure 1 The experimental device for the combined simulation of natural gas hydrate heat injection-displacement production is shown, including the displacement gas (CO 2 / N 2 ) cylinder 1, CH 4 Gas cylinder 25, first gas flowmeter 3, wet gas flowmeter 17, air heater 4, constant temperature water tank 13, reaction kettle 11, data acquisition instrument 15 and computer 16; reaction kettle 11 and air heater 4, gas flowmeter 3. The replacement gas cylinders 1 are connected in sequence; the constant temperature water tank 13 is arranged outside the reactor 11; the CH 4 The gas cylinder 25 is connected with the wet gas flow meter 17 and the reaction kettle 11 in sequence. The reaction kettle 11 is as figure 2 As shown, it includes a kettle body 29, a kettle cover 28 arranged on the top of the kettle body 29, a gas inlet and outlet 9 on the kettle cover 28, a bracket 30 supporting the bottom of the kettle body 29, and a sand outlet 14 placed at the bottom of the k...

Embodiment 2

[0072] The device is the same as in Example 1.

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Abstract

The invention provides a natural gas hydrate heat injection-replacement combined simulation mining device and method. The mining device comprises a replacement gas cylinder (1), a CH4 gas cylinder (25), a first gas flow meter (3), a second gas flow meter (17), a heater (4), a temperature control device (13), a reaction kettle (11), a data acquisition instrument (15) and a computer (16), wherein the reaction kettle (11) is arranged in the temperature control device (13) so as to control the temperature in a reaction container through the temperature control device, the replacement gas cylinder(1), the first gas flow meter (3), the heater (4) and the reaction kettle (11) are sequentially connected through a first pipeline (26), the CH4 gas cylinder (25), the second gas flow meter (17) and the reaction kettle (11) are sequentially connected through a second pipeline (27), and the data acquisition instrument (15) is electrically connected with the reaction kettle (11) and the computer (16) respectively.

Description

technical field [0001] The present invention relates to the development field of natural gas hydrate, in particular, the present invention relates to a natural gas hydrate heat injection-replacement joint simulated production device and method. Background technique [0002] As a clean energy resource, natural gas hydrate has twice the carbon content of conventional fossil fuels around the world. In today's energy shortage, the exploitation of natural gas hydrate has important economic and environmental benefits. At present, the traditional natural gas exploitation methods mainly include depressurization method, heat injection method, chemical reagent method or a combination of the above two methods. Compared with the single exploitation method, the combined exploitation method can benefit the exploitation of gas hydrate to a certain extent. [0003] The existing methods of combined exploitation of natural gas hydrate mainly include heat injection + depressurization method, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24E21B43/16
CPCE21B43/24E21B43/168
Inventor 王燕鸿樊栓狮朗雪梅
Owner PETROCHINA CO LTD
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