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Chapter 330 Deep Geothermal (1st update)

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    Deep geothermal is an emerging energy technology that was only started to be studied in the federal government around the 1970s.

    Its main principle is to guide the heat contained in the dense, impermeable, high-temperature rock mass at a depth of 2,000 to 3,000 meters underground to the surface through drilling, water injection, etc., and use it in heating, power generation and other fields.

    This technology was favored for its many advantages such as low cost, cleanness and recyclability, and was quickly promoted and applied in many countries with abundant geothermal resources. However, due to limitations in the speed of technical development, this technology did not exist until this century.  Only then has a relatively mature utilization system been formed.

    "The utilization of deep geothermal heat in our country started relatively late, and it has only reached a considerable scale after the technology matured in recent years." The person in charge seemed to know a lot about this area, and he was also gushing when talking to Chen Xin: "In the past few years, A national new district in Chang'an used this kind of deep geothermal well as a heating method. It is considered a successful case of my country's utilization of deep geothermal resources. Later, high-temperature dry hot rocks were drilled in Qinghai. my country is at the forefront of the world in this area. "

    "Has our country only begun to utilize deep geothermal heat in recent years? But I remember when I was still in elementary school, geothermal power generation should have been built in Yangpajing, Tibet Province? Doesn't that count as deep geothermal resource development?" Chen Xin was a little surprised.  , in his impression, Yangbajing was already very famous when he was still in elementary school.

    Faced with this question, the person in charge smiled and shook his head, and then explained: "Yangbajing in Tibet Province belongs to medium-temperature shallow geothermal heat. The geothermal resources there are basically ready-made, and there is no need to dig deep wells or anything like that."  Utilization. However, the geothermal power generation in Yangbajing is indeed very early. In the 1990s, megawatt-level geothermal power generation was achieved, which can be regarded as a famous case of geothermal development."

    "I see, shallow geothermal heat and deep geothermal heat are indeed not the same thing." Chen Xin nodded clearly, with a feeling of sudden realization, but he then asked: "The high-temperature dry hot rocks produced in Qinghai, this  Is the usability value high? Is the country¡¯s technology mature in this area?¡±

    Chen Xin is very concerned about this issue. If the country has ready-made technology, then his idea of ??building energy towers to build greenhouses or even district heating fields will be easier to realize.

    "Haha, you've got the right idea!" Regarding this question, the person in charge seemed to be scratched, and he became excited. He adjusted his sitting posture and took a sip of wine. He was obviously planning to talk to Chen Xin.  Speak well.

    When Chen Xin saw this, he also made a gesture of listening carefully, wanting to learn more about this aspect.

    "For many years, my country's total geothermal utilization has ranked first in the world, but it has mainly focused on the utilization of shallow, medium and low-temperature geothermal resources. On the one hand, there is a lack of relevant technology for deep geothermal resources, and on the other hand, there is insufficient resource exploration. Until recently, these The country has made many breakthroughs in this area only in the year." At this point, the person in charge felt a little sad on his face. He not only sighed: "Geothermal resources are a good thing! Its application cost is much lower than that of solar energy and wind energy. It¡¯s clean, environmentally friendly and has huge reserves!

    Especially in our country, the hot dry rock resources in the mainland area at a depth of 3 to 10 kilometers are equivalent to approximately 856 trillion tons of standard coal, accounting for about 16% of the world's resources. It is a pity that our country has not conducted research and development on this energy before.  , until the discovery of hot dry rock resources in the Qinghai-Tibet Plateau filled the gap of no exploration and discovery of hot dry rock resources in our country.  "

    "If that's the case, why didn't the country consider large-scale mining of hot dry rocks and use deep geothermal heat to build shelters to avoid this crisis?" Chen Xin found it strange. According to what the person in charge said, hot dry rock resource mining  It is easy and the application cost is low. It stands to reason that the country should mine it on a large scale. Why is it still burning coal now?

    Regarding this question, the person in charge had a wry smile on his face: "Don't you want to be a country? The southern part of the Qinghai-Tibet Plateau accounts for about 15% of the total hot dry rock resources in mainland my country. The country plans to build planting and breeding areas on the Qinghai-Tibet Plateau using geothermal energy. to heat and generate electricity, but the current construction environment on the plateau is too harsh, so this plan is progressing very slowly.

    Moreover, my dry hot rock resources are mainly distributed in the Qinghai-Tibet Plateau, Songliao Basin, Bohai Bay Basin, southeastern coast and other places. Now, in addition to the Qinghai-Tibet Plateau, the Songliao Basin, Bohai Bay Basin and the southeastern coast have all been raised.  The sea level is frozen. In this case, it is very difficult to develop and apply deep geothermal resources on a large scale.  "

    Hearing what the person in charge said, Chen Xin nodded with understanding. The seawater has poured into Dongting Lake, and the Shandong Peninsula has become Shandong Island. Under such circumstances, it is obviously not practical to develop geothermal resources in coastal areas.  of.

    But although thisThere are many difficulties, but the prospects for the utilization of deep geothermal energy are still broad.

    Chen Xin thought for a moment and then said, "Since the country has the technology in this area, it shouldn't be a problem if I want to use geothermal resources to build a greenhouse, right?"

    "It's really hard to say." The person in charge shook his head, refilled Chen Xin's wine glass, and then continued: "The deep geothermal technology currently used in the country is mainly used for the development of dry hot rocks, that is,  An impermeable rock formation that contains no fluids or a small amount of fluids.

    ??Specifically, water is injected into deep wells to open up cracks, thereby forming a planar artificial hot dry rock heat storage structure, and heat is extracted through the recovery of high-temperature water and steam.  This technology has certain requirements on the geological structure. In places like Hunan Province, groundwater resources are too abundant. If you want to exploit deep geothermal resources, you have to make technical changes. There are many problems!  "

    "Leave it to me to solve the technical problems. As long as the shelf can be put up, I will have a way to make it practical." Chen Xin did not find this problem a problem.

    With the backing of the system, it is not difficult to exploit deep geothermal energy.

    "I forgot that Mr. Chen, what you are best at is technical improvement!" The person in charge laughed, patted his head, and then made a promise: "Since Mr. Chen has such an idea, I am naturally willing to fully support it.  . Later, I will report this situation to the superior department and strive to set up a pilot here. When the time comes, I will need you, Mr. Chen, to improve the technology.

    If this can be done, the development technology of deep geothermal resources can be promoted on a large scale, which will be a great thing for the benefit of the country and the people!  "

    "Then I'll wait and see!" Chen Xin raised his glass and clinked it with the person in charge again.  (Remember the website address: www.hlnovel.com
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