Geophysical hot spring exploration price

Geophysical hot spring exploration price

Geothermal exploration in China began in the mid-1950s, and the current situation of geothermal drilling in China has roughly gone through four main stages of development:

The period from 1956 to 1970 was the initial exploration stage of geothermal resource exploration and development. Due to limitations in equipment capabilities and related technologies, geothermal drilling technology has a single means, mainly using core drilling methods with small construction depths (500-600m). In addition, due to market environment constraints, there has been no market demand.

The period from 1971 to 1985 was a breakthrough and development stage for geothermal resource exploration and development. The funds for this stage were invested by both the state and society, and were basically able to achieve exploration as the main focus or mining as the main focus, combining exploration and mining. It can meet the needs of users while also obtaining rich geological data. Many places have discovered geothermal energy and drilled wells, such as in the Henan Provincial Sports Center, where Henan Geological Engineering Company implemented exploration and mining combined with drilling, resulting in a geothermal well of over 900 meters with a water temperature of 40 ℃

The period from 1986 to 1955 was a slow development stage for geothermal resource exploration and development. During this stage, the country and enterprises were in a period of economic transformation, and the country's investment in geothermal resource exploration decreased. In addition, the market investment was insufficient, resulting in a slow pace of geothermal resource exploration and development; However, construction technology is still undergoing innovation, and domestic equipment is gradually being matched. Construction techniques are gradually diversifying, and the depth of construction wells is constantly increasing due to the enhancement of equipment capabilities, some reaching over a kilometer.

From 1996 to the present, it has been a period of rapid development in geothermal resource exploration and development. This is due to the rapid development of the social economy, the continuous improvement of people's living standards, the increasing awareness of environmental protection in society, and the growing demand for geothermal resources in tourism, real estate, and modern agriculture. Especially in recent years, geothermal new areas have been opened up across the country. Except for Beijing, Tianjin, and Xi'an, other provinces, cities, and counties in China have shown strong momentum in developing geothermal resources, and their equipment supporting capabilities have been continuously enhanced. Many new processes, methods, and technologies continue to emerge. In terms of management methods, some regions have begun to adopt information management methods to make the exploration, development, and utilization of geothermal resources more reasonable and standardized. At present, China's geothermal engineering technology has made significant progress, and the utilization of resources has been increasing year by year. As of 2002, Tianjin had 219 geothermal wells, including 13 recharge wells and 8 operational wells, with good recharge conditions. By the year 2000, China's direct utilization of geothermal energy had reached 10531 GW · h, ranking first in the world, with over 2500 geothermal wells.

According to the different water flow conditions, it can be divided into intermittent springs and perennial springs. If there is no significant water flow after the groundwater is exposed to the surface, it is called seepage. According to the temperature of the water flow, springs can be divided into boiling springs, hot springs, cold springs, and ice springs. Springs can be divided into eight levels based on their flow rate. The flow rate of a first level spring exceeds 100 cubic feet per second (2800 liters), the flow rate of a second level spring ranges from 10 to 100 cubic feet per second, and the flow rate of an eighth level spring is less than 1 pint per minute (8 milliliters per second). Spring is a natural concentrated surface outcrop of groundwater, which is a phenomenon of groundwater gushing out in a point like manner from underground aquifers or channels, and is a form of concentrated discharge of groundwater. It is generated under a combination of certain terrain, geology, and hydrogeological conditions. Under suitable terrain and geological conditions, groundwater and confined water are concentrated and discharged into springs on the ground.

Springs often appear as a point like opening, sometimes as a line or a small area. Spring water is often exposed in the valleys and slopes of mountainous and hilly areas, in the front of mountains, on both sides of rivers, at the edges of alluvial fans, and near fault zones, while it is rarely seen in plain areas. Spring water is often the source of rivers. In mountainous areas, such as deep valleys, underground water is discharged, and many clear springs converge into streams. In limestone areas, many karst springs themselves are the source of rivers. Spring water continuously flows into rivers throughout the year and is an important part of river supply.

Geophysical hot spring exploration priceTypes of hot springs

Volcanic hot springs, when rainwater falls to the surface and penetrates deep into the earth's crust, are subjected to high heat and pressure, and rise up through cracks and emerge from the surface, the temperature is still higher than human body temperature, forming the so-called hot springs. There are many forms of water gushing out, some silently and slowly gushing out, some roaring and spraying out, and some hot water gushing out together with mud and natural gas.

Non volcanic hot springs, including deep city rock hot springs, metamorphic rock hot springs, and sedimentary rock hot springs. By means of physical exploration and geological analysis, the depth of the aquifer generated by geothermal energy can be calculated, and drilling can be carried out in geothermal areas with the possibility of hot spring development to extract hot spring water from deep fault zones.

Hot springs can be divided into three categories based on their temperature: those above 75 ℃ are high-temperature hot springs, those between 40 ℃ and 75 ℃ are medium temperature hot springs, and those below 40 ℃ are low-temperature hot springs.

According to the acidity or alkalinity of hot water, it can be divided into three categories: acidic hot springs with an acidity or alkalinity value below 6, and alkaline hot springs with a hydrogen ion concentration greater than 8; A neutral hot spring is one with a pH value between 6 and 8. The main components in hot springs include chloride ions, carbonate ions, and liusuan ions. According to the proportion of these three anions, they can be divided into chloride springs, bicarbonate springs, and liusuan salt springs.

In addition to these three anions, there are also hot springs mainly composed of other components, such as Chongcao Spring (mainly composed of sodium bicarbonate), Bicarbonate Soil Spring, Salt Spring (mainly composed of sodium chloride ions), Chloride Soil Salt Spring, * Spring (mainly composed of sodium chloride ions), Shigao Spring (mainly composed of calcium liusuan), Zhengbitter Spring (mainly composed of magnesium liusuan), Iron containing Spring (White Sulfonic Spring), Copper containing and Iron containing Spring (also known as Bronze Spring)

Salt springs, also known as salt springs, can be classified into weak salt springs and strong salt springs based on the amount of chloride containing salt. According to the physical properties such as temperature, activity, and shape of hot springs, hot springs can be divided into six categories: ordinary hot springs, intermittent hot springs, boiling springs, fountains, gas vents (or sulfur vents), and hot mud springs.

Although both deep well hot water and hot springs belong to underground water sources, their temperature properties and application ranges still have similarities and differences.

Deep well hot water belongs to artificial drilling, which only requires paying a small electricity fee for the water pump and does not need to pay any more water fees. It generally refers to wells that obtain deep groundwater, and is more common in arid areas such as northwest China. Drilling depth: 20-300 meters, water temperature around 17 degrees, widely used for production, daily life, and factory cooling.

Characteristics and functions of deep well water:

① The drilling depth ranges from 20 meters to 300 meters. ② The water intake is between 1-100 tons per hour. ③ The water temperature is around 17 degrees Celsius and is widely used for cooling in production, daily life, and factories. ④ Deep well concealment does not occupy space, the diameter of the wellhead (10-30 centimeters), and the construction conditions are not high. Using a deep well pump to lift water can provide frequent and annual water supply, and deep well water can replace expensive tap water.

The advantages and benefits of deep well water:

① Just pay less electricity for the water pump and you don't have to pay any more water bills;

② Not only can it be used as edible water, but it can also be used as industrial and commercial water;

③ Water from deep crustal rock layers, containing essential minerals for the human body, with pollution-free water quality and a sweet taste;

④ Groundwater can temporarily alleviate the dilemma of water shortage;

⑤ You can use your existing water pipeline to transport groundwater, and you can drink groundwater with just a twist of boiling water, which is as convenient as tap water;

⑥ In general, there is water within 40 meters of drilling underground, and the project cost is reasonable with a short construction period;

⑦ The wellhead is small, occupying only 3-4 square centimeters, which will not affect the beauty of the home and normal production operations;

⑧ Groundwater maintains a constant temperature of 24 ℃, warm in winter and cool in summer;

And hot springs are natural springs with a wide range of applications from all over the world. The temperature generally exceeds the range of about 20 ℃ or above. Distributed around the world, it is naturally formed underground mineral water that gushes out. Strictly speaking, it is natural water that emerges naturally from underground, with a spring mouth temperature significantly higher than the local annual average temperature but lower than (equal to) 45 degrees Celsius. The natural outcrop of underground water is called hot springs and contains trace elements beneficial to human health. The concept of spring water has two points. Firstly, the phenomenon of groundwater gushing out of the surface at the intersection of the aquifer or aquifer channel with the ground. This phenomenon is mainly distributed in valleys and foothills, and is an important discharge method of groundwater. The second is the natural outcrop point of confined water in underground aquifers, which is mostly distributed in the Pingchuan area. Volcanic hot springs

When rainwater falls to the surface and infiltrates deep into the earth's crust, it is subjected to high heat and pressure. When it rises through cracks and rushes out of the surface, the temperature is still higher than human body temperature, forming the so-called hot springs. There are many forms of water gushing out, some silently and slowly gushing out, some roaring and spraying out, and some hot water gushing out together with mud and natural gas.

Including Shencheng Rock Hot Springs, Metamorphic Rock Hot Springs, and Sedimentary Rock Hot Springs. By means of physical exploration and geological analysis, the depth of the aquifer generated by geothermal energy can be calculated, and drilling can be carried out in geothermal areas with the possibility of hot spring development to extract hot spring water from deep fault zones. The flow rate of spring water is mainly related to the area of the spring water supply area and the amount of precipitation. The larger the supply area and the more precipitation, the greater the spring water flow. The flow rate of spring water varies over time, usually reaching a peak at some point within one year, and gradually decreasing thereafter. Many large springs reach their maximum flow during the rainy season, often later than the rainy season. A spring with a large and stable flow can often become a good source of water supply,