Chapter 977: Huge "torch"

This is a gas well!
When mining, natural gas can be ejected from the wellhead!
Natural gas is also buried in underground closed geological structures like crude oil, some are stored in the same layer as crude oil, and some exist alone. For natural gas stored in the same layer as crude oil, it will be extracted together with crude oil. It does not exist alone, only natural gas is ejected from the wellhead.
The natural gas here exists alone, and no crude oil will be ejected with the same when it is ejected. This has been confirmed through early exploration.
The extraction method of natural gas is very similar to the extraction method of crude oil, but also has its own special features.
Due to the low density of natural gas, 0.75-0.8 kg/m3, the pressure of the wellbore gas column on the bottom of the well is small; the viscosity of natural gas is small, and the flow resistance in the formation and pipeline is also small; and because of the large expansion coefficient, its elastic energy is also large . Therefore, the self-injection method is generally used in natural gas extraction.
This is basically the same as the self-injection oil recovery method. However, because gas well pressures are generally high and natural gas is a flammable and explosive gas, the pressure-bearing capacity and sealing performance of gas production wellhead devices are much higher than those required for oil production wellhead devices.
Natural gas extraction also has its own characteristics. First, natural gas, like crude oil, is often a storage system with bottom water or edge water. With the development of natural gas, the elastic energy of water will drive water into the gas reservoir along the high permeability zone.
In this case, due to the hydrophilicity of the rock and the capillary pressure, the intrusion of water does not effectively displace the gas, but seals the undischarged gas in the fractures, caves or voids, forming a dead gas zone.
This part of the high-pressure gas trapped in the water invasion zone can be as high as 30% to 50% of the rock pore volume, which greatly reduces the ultimate recovery rate of the gas reservoir.
Secondly, after the gas well produces water, the percolation resistance of the gas flow into the bottom of the well will increase, and the total energy consumption of the gas-liquid two-phase flow along the oil well will increase significantly. With the increasing impact of water invasion, the gas recovery rate of gas reservoirs has decreased, the self-blowing capacity of gas wells has weakened, and the production of single wells has rapidly declined until the bottom of the well is seriously water accumulated and production is stopped.
At present, the treatment of gas reservoir flooding mainly starts from two aspects, one is drainage and the other is water blocking. Water blocking is the use of mechanical blocking, chemical blocking and other methods to separate the gas-producing layer from the water-producing layer or to build a water blocking barrier in the reservoir. At present, there are many drainage methods, the main principle is to eliminate the wellbore water, the professional term is called drainage gas recovery method.
It will not be so troublesome here. If it is not for the actual exploration data in front of you, the experts who are conducting exploration here cannot believe that there is no water in the natural gas reservoir here, there is no water at all, and there is only clean deep underground. natural gas.
It was impossible to explain this phenomenon for a while, and the experts had no choice but to attribute it to the drought and lack of rain in this area, and the lack of groundwater may also be the reason.
In fact, this is all the credit of the "God-Level Big Mine Owner" system. The natural gas is gathered, and after all gathered together, naturally there is only natural gas and no other miscellaneous things such as common groundwater.
Zhong Zhe took Wang Xudong to wait not far in front of the completed gas well, and said happily: "Boss, it's unbelievable. There is no water deep in the ground here, it's all dry and clean natural gas!"
Wang Xudong clicked a little bit, and all this is reasonable.
Everyone walked to the front of this well and looked at the completed gas well with joy. Liu Yu seemed to have discovered something and said loudly, "Brother Dong, why didn't you see the gas pipeline."
According to common sense, natural gas coming out of the wellhead will be connected to gas pipelines, gathered together into the storage area, where it undergoes a series of treatments, and then is pressurized to be transported into the main gas pipeline and sent to all parts of the country.
There is no gas pipeline here.
Wang Xudong said: "Our gas pipeline is still under construction, but it is almost finished. If you are interested, please take a look with me later."
A dozen kilometers away is the main pipeline of the West-East Gas Pipeline. The gas pipeline connecting this main pipeline has been constructed, but it has not been completed yet. The gas well has not been connected to the gas pipeline temporarily, but Has not hindered the exploitation of natural gas.
Looking at this gas well, Wang Xudong thought with joy, this is our first gas well, what will it look like when natural gas is extracted?
"Boss, everything is ready, are you going to mine!"
Zhong Zhe began to ask for instructions. This well has been built and no formal mining has been carried out. That is because it needs to wait for Wang Xudong's arrival. Now everyone has arrived and can start mining.
Wang Xudong waved his hand and said, "Go mining!"
The order was issued, and several workers started to work under the command of two technicians. Everything went in an orderly manner. After a lot of busyness, they finally used special equipment to penetrate the bottom of the well. The well pipe that went vertically deep into the ground finally Connecting gas reservoirs deep underground.
This area has an area of ​​tens of square kilometers, and there are about trillions of cubic meters of high-quality natural gas. These natural gas form dense gas reservoirs deep underground, almost like peaks and nests. Each gas reservoir is independent and mutually exclusive. connected.
"boom!"
There was a muffled noise, and then everyone saw a very spectacular scene. I saw a large amount of debris ejected from the well, like a small volcanic eruption. These debris flew to a height of tens of meters and fell to the ground again. .
Wang Xudong and others put on their helmets early, and they were a little far away. These muds and rocks could not fall on everyone.
Along with the mud and rocks, a large amount of natural gas was spouting spectacularly. When the gas was spouted, it made a sharp and piercing sound, just like a big balloon was punctured by a small opening, and the gas inside came out of this small opening.
So spectacular!
Everyone was shocked at first, and then they heard a loud voice in their ears, "Ignite!"
"Boom!"
With the sound of this sound, the jetted natural gas was ignited, and the high flame was at least ten meters high, just like a huge torch.
Liu Yu said: "Brother Dong, it's so spectacular!"
Wang Xudong nodded slightly. This was the first time I saw the exploitation of natural gas. He didn't expect that the natural gas spurted from the ground would give everyone such a shock.
Immediately, Wang Xudong's heart was also happy. This is his first gas well, and then there will be a second, third...
A few months later, within this area of ​​tens of square kilometers, there will be gas wells scattered like a celestial flower.
Regardless of whether it is Area 1 or Area 2, the natural gas in these two places is highly dense, each with several trillion cubic meters. The total natural gas in these two places alone accounts for about 70 to 80% of the 9 trillion cubic meters of natural gas.
With such rich natural gas resources, dozens or even hundreds of natural gas wells will be built in these two places.
Two technicians started sampling again. Prior to this, during the exploration process, samples were taken. This time the natural gas was formally extracted and samples were taken for analysis.
The main component of natural gas is alkanes, of which methane accounts for the vast majority. There are also a small amount of ethane, propane and butane. In addition, there are generally hydrogen sulfide, carbon dioxide, nitrogen and water gas and a small amount of carbon monoxide and trace rare gases such as helium and argon. Wait.
Liu Yu sniffed his nose and said curiously: "Brother Dong, why didn't you smell any other smells."
Generally speaking, natural gas contains other gas components, especially hydrogen sulfide and sulfur dioxide. The natural gas spurted from the wellhead just now. Before it was ignited, part of the natural gas spread out, and there should be some odors, but in fact it is not.
Wang Xudong smiled and said: "It may be that our natural gas is of very good quality. Without the sloppy gas, naturally there will be no abnormal smell."
This is the natural gas gathered by the "God-level Big Miner" system. The quality must be excellent. Wang Xudong didn't think it was any strange. But after sampling and analysis, many experts were surprised. Of course, this is something to say~ EbookFREE.me~ Standing not far in front of this gas well, Wang Xudong watched vigorously for about ten minutes, and Liu Yu took it even more. Take a video out of his phone.
Zheng Xiaotong also looked happy. "Brother Dong, congratulations on the successful extraction of natural gas from your first gas well. I will call my dad later and make him happy too."
Zheng Ming is a member of the negotiating team, and he represents the country to conduct natural gas import negotiations with a certain country. He naturally hopes that Wang Xudong can extract natural gas as soon as possible. If he receives a call from Zheng Xiaotong, Zheng Ming will definitely be very happy.
After watching here for a long time, Wang Xudong waved his hand and said, "Go, let's take a look at the progress of our gas pipeline construction."
Everyone got on the off-road vehicle and saw some people and construction equipment after driving a few kilometers. There are thick super stainless steel pipes, large cranes, excavators, and some other construction machinery. Some workers are busy.
A construction manager is conducting command. The exploration of the line has been completed. The line has been marked with wooden stakes and white lime. The excavator excavated and dug a trench in the Gobi with a depth and width of more than one meter. Then Put them into a gas pipeline with a diameter of more than one meter, weld them together one by one, extend them all the way, and then cover them with mud and sand.
Driving by Lin Hu, Wang Xudong took a rough look along the route to build the gas pipeline. The construction of this gas pipeline took a multi-stage construction model, and it will not take too long to complete the construction.
In the evening, it was dark.
After watching the situation of No. 1 and No. 2, Wang Xudong also watched the construction of the gas pipeline. At this time, he started to drive back to the county.
"Brother Dong, look!"
Liu Yu who was riding in the co-pilot suddenly shouted in excitement and pointed to the distance.
……….
The first one is sent! ! !