God-level Miner

Chapter 974 The Huge "Torch"

It's a gas well!
When mining, natural gas can be ejected from the wellhead!

Like crude oil, natural gas is also buried in underground closed geological structures, some of which 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.For those that exist alone, there will be no, only natural gas will be ejected from the wellhead.

The natural gas here exists alone, and there will be no crude oil when it is ejected. This has been confirmed through the previous exploration.

The extraction method of natural gas is very similar to that of crude oil, but also has its special features.

Due to the low density of natural gas, which is 0.75-0.8 kg/m[-], 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, self-injection is generally used in natural gas extraction.

This is basically the same as the self-spraying oil recovery method.However, because gas well pressure is 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 of oil production wellhead devices.

Natural gas extraction also has its own characteristics.First of all, 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 the water body will drive the water into the gas reservoir along the high permeability zone.

In this case, due to the hydrophilicity of the rock itself and the effect of capillary pressure, the intrusion of water does not effectively displace the gas, but seals the undischarged gas in the cracks, holes or gaps, 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, thus greatly reducing the ultimate recovery of the gas reservoir.

Secondly, after the gas well produces water, the seepage resistance of the gas flowing into the bottom of the well will increase, and the total energy consumption of the gas-liquid two-phase pipe flow upward along the oil well will increase significantly.With the increasing impact of water invasion, the gas production rate of gas reservoirs decreases, the self-spraying ability of gas wells weakens, and the production of a single well decreases rapidly until the bottom of the well is seriously waterlogged and production is shut down.

At present, there are two main ways to control the flooding of gas reservoirs, one is drainage and the other is water blocking.Water plugging is the use of mechanical plugging, chemical plugging 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, and the main principle is to remove the accumulated water in the wellbore. The technical term is called drainage and gas recovery method.

It wouldn’t be so troublesome here. If it weren’t for the real exploration data in front of them, the experts conducting exploration here would not be able to believe that there is no water in the natural gas reservoirs here, there is no water at all, and there is only clean water deep in the ground. natural gas.

This phenomenon could not be explained for a while, and experts had no choice but to attribute it to the drought and lack of rain in this area, and the possible lack of groundwater.

In fact, this is all due to the "God-level big mine owner" system. After all these natural gas are gathered together, there is naturally only natural gas, and there are no other miscellaneous things, such as common groundwater.

Zhong Zhe led Wang Xudong to wait not far from the completed gas well, and said happily, "Boss, it's unbelievable that there's no water in the depths of the ground here, and it's all dry and clean natural gas!"

Wang Xudong clicked, all of this is reasonable.

Everyone walked to the front of the 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 the gas transmission pipeline, gathered together into the storage area, where it will undergo a series of processing, and then pressurized and transported into the main gas transmission 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, come and take a look with me later."

More than ten kilometers away is the main pipeline of the West-East Gas Pipeline. The gas pipeline connecting this main pipeline is already under construction, but it has not yet been completed. This gas well has not been connected to the gas pipeline for the time being, but Has not hindered the extraction of natural gas.

Looking at this gas well, Wang Xudong thought happily, this is our first gas well, what will it look like when the natural gas is extracted later?

"Boss, everything is ready, whether to start mining!"

Zhong Zhe began to ask for instructions.This well has already been built, and no formal mining has been carried out because it is necessary to wait for Wang Xudong's arrival. Now that everyone has arrived, mining can begin.

Wang Xudong waved his hand and said, "Explore!"

After the order was issued, several workers began to work under the command of two technicians. Everything was carried out in an orderly manner. After a lot of busy work, they finally penetrated the bottom of the well with special equipment. Connected to gas reservoirs deep underground.

In the area of ​​tens of square kilometers in this area, 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 of each other. connected together.

"boom!"

There was a muffled sound, and then, everyone saw a very spectacular scene. A large amount of mud and rocks were ejected from the wellhead, like a small volcanic eruption. .

Wang Xudong and others put on their hard hats early on, and the distance was a little far away, so the mud and rocks could not fall on everyone.

Along with the mud and rocks, there was also a large amount of natural gas that spewed out spectacularly. When these gases spewed out, they made a sharp and piercing sound, just like a small hole in a large balloon, and the gas inside escaped from this small hole.

How spectacular!
Everyone was shocked at first, and then heard a loud and clear voice, "Light on the fire!"

"Oh!"

As the sound sounded, the jet of natural gas was ignited, and the high flame was at least ten meters high, like a huge torch.

Liu Yu said: "Brother Dong, it's so spectacular!"

Wang Xudong nodded slightly. This was also the first time he had seen the exploitation of natural gas. He never thought that the natural gas erupting from the ground would bring such a shock to everyone.

Immediately, Wang Xudong's heart became happy. This is his first gas well, and there will be a second well, and a third well...
In a few months, gas wells will be dotted across the area of ​​dozens of square kilometers like heavenly maidens scattering flowers.

Regardless of whether it is District 1 or District 2, the natural gas in these two places is highly dense, each containing trillions of cubic meters. The total natural gas in these two places alone accounts for about 9% to [-]% of the [-] trillion cubic meters of natural gas.

With such abundant natural gas resources, dozens or even hundreds of natural gas wells will be built in each of these two places.

Two technicians, began to take another sample.During the exploration process before, samples were also taken. This time the natural gas was officially mined, and samples were taken for analysis again.

The main components of natural gas are alkanes, of which methane accounts for the vast majority, and a small amount of ethane, propane and butane. In addition, there are generally hydrogen sulfide, carbon dioxide, nitrogen and water vapor, a small amount of carbon monoxide and trace amounts of rare gases, such as helium and argon. wait.

Liu Yu sniffed his nose, and said curiously, "Brother Dong, why don't you smell anything else?"

In general, natural gas contains other gas components, especially hydrogen sulfide and sulfur dioxide.The natural gas spewed out from the wellhead just now. Before it was ignited, part of the natural gas spread in all directions. You should be able to smell some smells, but in fact there is no.

Wang Xudong smiled and said: "It may be that the quality of our natural gas is very good. Without those miscellaneous gases, naturally there will be no abnormal smell."

This is the natural gas gathered by the "God-level mine owner" system, and the quality must be excellent. Wang Xudong didn't think there was anything strange about it.But after sampling and analysis, many experts were surprised. Of course, this is something to say later.

Standing not far in front of the gas well, Wang Xudong watched it with great interest for about ten minutes, and Liu Yu even took out his mobile phone to take a video.

Zheng Xiaotong also had a happy face, "Brother Dong, congratulations on successfully producing natural gas from your first gas well. I will call my dad later to make him happy too."

Zheng Ming is one of the members of the negotiating team, representing the country in negotiating the import of natural gas with a certain country. He naturally hopes that Wang Xudong can produce natural gas as soon as possible. If he receives a call from Zheng Xiaotong, Zheng Ming will definitely be very happy.

After looking here for a long time, Wang Xudong waved his hand and said, "Let's go and see the progress of our gas pipeline construction."

Everyone got on the off-road vehicle and saw some personnel and construction equipment after driving for several kilometers.There are thick super stainless steel pipes, large cranes, excavators, and some other construction machinery, and some workers are busy.

A construction manager is directing. The exploration of the line has been completed. The line has been marked with wooden piles and white lime. The excavator excavated and dug a ditch on the Gobi, which is about one meter deep and wide. Then Put in a gas pipeline with a diameter of more than one meter, weld each pipe together, extend all the way, and then cover it with soil and sand.

Driven by Lin Hu, Wang Xudong took a general look along the route for the construction of the gas pipeline. The construction of this gas pipeline adopts the mode of multi-stage construction, and it will not take too long to complete the construction.

In the evening, the sky was slightly dark.

After watching the situation of No. 1 and No. 2 lands, Wang Xudong also saw the construction of the gas pipeline. At this time, he started to drive back to the county.

"Brother Dong, look!"

Liu Yu, who was in the co-pilot, suddenly shouted excitedly and pointed into the distance.

..........
The first one is delivered! ! !

(End of this chapter)