Chapter 331: Deep geothermal

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Deep geothermal is an emerging energy technology that only began to be studied

in the Commonwealth around the 1970s.

The main principle is to guide the heat contained in the dense and impermeable

high-temperature rock mass at a depth of 2000 to 3000 meters underground to

the surface by means of drilling, water injection, etc., and use it for

heating, power generation and other fields.

This technology is favored due to its low cost, clean and recyclable

advantages, and has been quickly promoted and applied in many countries with

rich geothermal resources. However, it is limited by the speed of

technological development. This technology has not been until this century.

Only then formed a more mature utilization system.

"The use of deep geothermal energy in my country started late, and it has only

formed a considerable scale after the technology has matured in recent years."

The person in charge seems to know a lot about this area, and when talking to

Chen Xin, he is also eloquent: "The first few A new national area in Chang'an

adopted this deep geothermal well as a heating method. This is a successful

case of my country's deep geothermal resource utilization. Afterwards, high-

temperature dry hot rocks were produced in Qinghai. my country is in the

forefront of this area. "

"Did my country only begin to use deep geothermal heat in these years? But I

remember when I was still in elementary school, the Yangbajing in Tibet should

have been built for geothermal power generation, right? Isn't that a 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 problem, the person in charge shook his head with a smile, and

then explained: “Yangbajing in Tibet is a medium-temperature shallow

geothermal field. The geothermal resources there are basically readily

available, and there is no need to drill deep wells. Utilization. However, the

geothermal power generation in Yangbajing is indeed quite early. Megawatt-

level geothermal power generation was realized in the 1990s, which is a famous

case of geothermal development."

"It turns out that shallow geothermal and deep geothermal are really not the

same thing." Chen Xin nodded clearly, feeling quite suddenly realized, but he

went on to ask: "The high-temperature dry-hot rock produced by Qinghai, this

Is the available value high? Is the country's technology mature in this

regard?"

Chen Xin is very concerned about this issue. If the country has ready-made

technology, then his idea of building an energy tower to build a greenhouse

or even a district heating field will be easier to realize.

"Haha, you can just ask the idea!" For this question, the person in charge

seemed to be scratched to the itch. The whole person became excited, adjusted

his sitting posture, and took a sip of wine, obviously intending to meet Chen

Xin. Speak well.

Upon seeing this, Chen Xin also made a gesture of listening carefully, wanting

to get a good understanding of this knowledge.

"The total amount of geothermal utilization in China has been the largest in

the world for many years, but it is mainly concentrated on the utilization of

shallow, medium and low temperature geothermal. 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. The country made a lot of

breakthroughs in this area only in the last year.” At this point, the person

in charge was a little bit sorrowful, not only exclaimed: “Geothermal

resources are a good thing! Its application cost is much lower than solar and

wind energy. And it is clean and environmentally friendly, with huge reserves!

Especially in my country, the resources of dry hot rock at a depth of 3 to 10

kilometers in the mainland are about 856 trillion tons of standard coal,

accounting for about 1/6 of the world's resources. It is a pity that my

country has not studied this energy before. It was not until the discovery of

hot dry rock resources on the Qinghai-Tibet Plateau that my country had not

found any hot dry rock resources through exploration. "

"If this is the case, why didn't the country consider large-scale mining of

hot dry rock and use deep geothermal heat to build shelters to avoid this

crisis?" Chen Xin felt strange. According to the person in charge, the mining

of hot dry rock resources Easy and low application cost. It stands to reason

that the country should mine on a large scale. Why is it still burning coal?

Regarding this question, the person in charge smiled bitterly: “Don’t you want

to be a country? The southern Qinghai-Tibet Plateau accounts for about one-

fifth of the total dry-hot rock resources in mainland China. The state plans

to build planting and breeding areas on the Qinghai-Tibet Plateau. The use of

geothermal heat for heating and power generation, but now the construction

environment on the plateau is too harsh, and the progress of this plan is very

slow.

Moreover, the hot dry rock resources of Guowo are mainly distributed in the

Qinghai-Tibet Plateau, Songliao Basin, Bohai Bay Basin, Southeast Coast and

other places. Now in addition to the Qinghai-Tibet Plateau, the Songliao

Basin, Bohai Bay Basin and the Southeast Coast are all rising. The sea level

is sealed by ice. Under such circumstances, it is difficult to develop and

apply deep geothermal resources on a large scale. "

Hearing what the person in charge said, Chen Xin nodded clearly. The sea water

was poured into Dongting Lake, and Shandong Peninsula became Shandong Island.

It is obviously impractical to develop geothermal resources in coastal areas

under these circumstances. of.

Although there are many difficulties in this regard, the prospects for the use

of deep geothermal energy are still broad.

Chen Xin thought about it for a while and then said: "Since the country has

the technology in this area, there shouldn't be any problem if I want to use

geothermal resources to build a greenhouse?

"This is really hard to say." The person in charge shook his head and filled

Chen Xin's glass with wine, before continuing: "The deep geothermal technology

currently applied in the country is mainly used for the development of dry hot

rock. An impermeable rock formation that does not contain fluid or contains a

small amount of fluid.

Specifically, it is to open up the fissures by injecting water into deep

wells, UU Reading www.uukanshu. com thus forms a planar artificial dry hot

rock heat storage structure, which extracts heat by recovering high

temperature water and steam. This technology is required by the geological

structure. In places like Hunan Province, groundwater resources are too rich.

If you want to exploit deep geothermal resources, technical changes must be

made. There are many problems! "

"Leave it to me to solve the technical problem. As long as I can set up the

shelf, I can make it practical." Chen Xin didn't think it was a problem.

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

geothermal.

"I forgot that Mr. Chen, what you are best at is technical improvement!" The

person in charge laughed and patted his head for fear. This was a guarantee:

"Since you have such an idea, Mr. Chen, I am naturally willing to support it.

.After that, I will reflect this situation with the higher-level departments,

and strive to establish a pilot here. At that time, I will still need 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 benefit the country and the

people! "

"Then I will wait and see!" Chen Xin raised his glass and touched the person

in charge again.