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Bypass type gas-liquid separation type geothermal energy productivity testing system

A testing system, gas-liquid separation technology, applied in geothermal energy systems, geothermal energy prediction/simulation, geothermal energy, etc., can solve problems such as uncertainty, large differences in thermophysical parameters and thermodynamic properties, etc.

Active Publication Date: 2020-12-04
HEBEI UNIV OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

Since the thermophysical parameters and thermodynamic properties of non-condensable gas, water vapor, and geothermal water are quite different, if the composition of the geothermal fluid produced by the hot dry rock wellhead cannot be determined, it will be very difficult to use it as a heat source for power generation at this time. uncertainty

Method used

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  • Bypass type gas-liquid separation type geothermal energy productivity testing system

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Experimental program
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Embodiment

[0027] Taking the Yangyidi thermal power station in Tibet as an example, the heat-carrying fluid of dry hot rock produced at the wellhead of production well 1 is tested by adjusting the opening of the wellhead valve 2 and reducing the total flow rate by 10% each time. Adjust the time interval according to the on-site test situation, and reduce it in turn until it reaches 30% of the total flow, and complete the variable working condition test.

[0028] Through the test results of different flow rates, it is finally calculated that the temperature of the hot dry rock heat-carrying fluid produced at the wellhead of production well 1 is 168°C, and the pressure is 0.76PMa. The geothermal water, geothermal water steam and The flow rates of non-condensable gases are 581.3m 3 / s, 42.74m 3 / s and 0.96m 3 / s, and then the proportions of geothermal water, geothermal steam and non-condensable gas are 93%, 6.846% and 0.154%, respectively.

[0029] What is not mentioned in the present in...

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Abstract

The invention discloses a bypass type gas-liquid separation type geothermal energy productivity testing system. The bypass type gas-liquid separation type geothermal energy productivity testing systemcomprises a production well, a wellhead valve, a gas-liquid separator, a condenser, a cooling tower, a cooling pump, a pressure pump and a recharge well, wherein an inlet of the wellhead valve communicates with a heat source outlet of the production well, and the tail end is provided with a tee joint; one outlet of the tee joint communicates with an inlet of the gas-liquid separator, and anotheroutlet of the tee joint communicates with the recharge well; a liquid outlet of the gas-liquid separator communicates with an inlet of the pressure pump; a gas outlet of the gas-liquid separator communicates with an inlet of the condenser; a gas outlet of the condenser communicates with the atmosphere; a condensed water outlet of the condenser communicates with an inlet of the cooling tower; an outlet of the cooling tower communicates with an inlet of the cooling pump; an outlet of the cooling pump communicates with a condensate water inlet of the condenser; a liquid outlet of the condenser communicates with an inlet of the pressure pump; and an outlet of the pressure pump communicates with the recharge well. The bypass type gas-liquid separation type geothermal energy productivity testingsystem is provided with the wellhead valve, the outlet flow rate is adjusted, and the flow and the composition of the geothermal fluid at the wellhead and the geothermal energy productivity value areobtained.

Description

technical field [0001] The invention belongs to the technical field of geothermal energy production testing, in particular to a bypass type gas-liquid separation geothermal energy production testing system. Background technique [0002] In recent years, geothermal resources have gradually entered our field of vision with a series of advantages such as abundant reserves, low environmental pollution, and renewable. Geothermal resources are mainly divided into hydrothermal resources and hot dry rocks. At present, the development of geothermal resources mainly focuses on hot dry rocks. Hot dry rock is a high-temperature rock mass buried 3-10 km underground, with a temperature generally greater than 200 °C, and has economic development value. Hot dry rock resources have the characteristics of wide distribution, low pollution emissions, renewable, good thermal energy continuity, and are not restricted by seasons and climatic conditions. Studies have shown that the energy in shall...

Claims

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Application Information

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IPC IPC(8): E21B47/06E21B47/07E21B47/00E21B43/34E21B34/02F24T50/00
CPCE21B47/06E21B47/00E21B43/34E21B34/02F24T50/00F24T2201/00Y02E10/10
Inventor 李太禄刘青华孔祥飞孟楠高翔贾亚楠
Owner HEBEI UNIV OF TECH
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