As soon as Wang Xudong walked over, he saw that the drilling rig that was supposed to be drilling under rotation stopped, and it seemed that there was really a big problem, otherwise, they would not have stopped for no reason, and would definitely continue to drill. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

In terms of oil exploitation, Wang Xudong doesn't know much about it, and he doesn't need to understand it very well.

Lei Ziyuan understands, he is not only an expert in oil field planning, but also an authority in the field of oil exploitation, as soon as he came over, as soon as he saw this situation, his face immediately became a little solemn.

There is no need to ask these drillers what the problem is, but it is obvious at a glance. He walked over, crouched down, and looked carefully.

Those were cuttings, mud and other things drilled out of the borehole, and he picked some of them up with his hands, looked at them carefully, and even put them under his nose and smelled them.

Lei Ziyuan said slowly: "It seems that there is no need to continue drilling, it is much shallower than I expected." ”

Wang Xudong knows why there is no need to continue drilling, because if the reservoir is drilled through at this time, it will be a big problem. Under the action of strong well pressure, the oil below will be sprayed out, and it is estimated that the pressure will not be suppressed.

All the oil here was gathered together by Wang Xudong using the "god-level big mine" system, which was more than 600 million tons, forming a huge oil layer, and he also knew the depth of this oil layer, which was not deep in order to facilitate exploitation.

But not everyone can be as clear as Wang Xudong, there is a person in the drilling team who looks like an engineer and technician, and he has a different opinion, suggesting: "Professor Lei, I think we can drill some more distance and drill this wellbore deeper." ”

Lei Ziyuan waved his hand firmly: "There is no need, if you drill any further, there will really be a big problem, stop it, we need logging operations in the next step, and then put down the casing." ”

If you don't continue drilling, you can log the well, can you put down the casing?

Many knowledgeable people thought in their hearts, this speed is too fast, could it be that the oil burial here is really shallow, well, it must be like this, Professor Lei is an expert, he will definitely not make a mistake.

Just now, through the rock cuttings, mud and other things drilled out, Lei Ziyuan has judged that the position of the drill bit is not far from the oil reservoir, and it can not be drilled again, and the next step is to put down the casing.

Here, by the way, about the process of extraction of oil.

After the development of oil exploitation from the most primitive artificial drilling to rotary drilling, the exploitation technology has gradually matured, and the current oil drilling and exploitation technology is roughly as follows.

After the oil and gas field development plan is determined, the development process begins, which includes two main links: drilling and production. Now the Bucheon oil field has just entered the drilling process and is ready for production.

Before drilling, it is first necessary to determine the location of the drilling well (i.e., the drilling well location) on the ground, and then lay the foundation for the installation of the drilling rig and install the derrick and drilling rig at the well location. During the drilling operation, the power of the drilling rig is used to drive the drill pipe and drill bit to rotate, and the drill bit is gradually broken down to form a wellbore (also known as a wellbore). The size of the drilling borehole size is determined by the size of the drill bit.

At the same time as the drill bit breaks the rock formation, it injects drilling fluid (commonly known as drilling mud) into the ground through the hollow drill pipe, and brings a large amount of cuttings generated by the drill bit to the surface by the circulating drilling fluid in the broken formation. After the solid control device on the ground removes the cuttings in the drilling fluid, the drilling fluid is driven into the well again through the drilling pump

The drilling fluid is through the inner hole of the drill pipe to the water hole of the drill bit, and then returns to the surface from the annular space between the borehole wall and the drill string. The process of drilling is the process in which the drill bit breaks the rock and the drilling fluid continuously carries out the drill cuttings and forms the wellbore through circulation.

After drilling to the design depth, special instruments should be inserted into the wellbore for logging operations, the purpose of which is to determine the lithology of the downhole formation and the location of each oil, gas and water layer, and then enter the seamless steel pipe (also known as casing) smaller than the drilling wellbore, and inject cement slurry into the annular space between the casing and the borehole wall to fix the casing on the borehole.

The well had reached the desired depth and was unnecessary, and workers started to start the rig and exit the drill pipe from the borehole.

The long drill pipes, one by one, were withdrawn, and after all of them were withdrawn, what appeared in front of everyone was a black hole, vertically down the borehole.

Without Lei Ziyuan's personal command, the workers of the drilling team, under the command of several technicians, put professional instruments into the borehole of this black hole and began to detect the situation inside the borehole, especially the location of the oil, gas, and water layers.

All kinds of data were also detected one by one, and the technicians glanced at Lei Ziyuan with admiration, and thought in their hearts, they are worthy of being experts, their eyes are more powerful than professional instruments, and there is really an oil-bearing layer underneath, and if they continue to drill, they will really have to drill through.

No one wants to see the crude oil underneath under tremendous pressure ejected at this time, even if it is spewed, if it is when the oil is actually extracted.

"Prepare the casing, put down the first cannula!"

The person in charge of this professional drilling team came over and personally instructed his workers to start putting down the first casing, which was a stainless steel casing, which was made of super stainless steel.

Lei Ziyuan also saw it, and said with a smile: "Xudong, this is what you call super stainless steel, using such a material to make a casing is too luxurious." ”

Wang Xudong said: "This kind of material is of good quality." ”

Others can't be so extravagant, and if you want to order super stainless steel from Sanlian Special Steel Group, you need to wait in line. Wang Xudong is the real boss of Sanlian Special Steel Group, and there is naturally no problem with some super stainless steel.

Like this casing, it is generally made of carbon steel, and Wang Xudong uses super stainless steel, which is naturally much better in quality, and the corrosion resistance alone is many times stronger than that of carbon steel casing.

The entire oil pipeline from the Buchuan Oilfield to Qingyang Port is made of super stainless steel, which is the reason why Wang Xudong said to Chen Sanlian that thousands of tons of super stainless steel should be prepared.

First prepare a few thousand tons, process into a diameter of 1200 mm oil pipeline, if thousands of tons are not enough, add a few thousand tons, the entire oil pipeline, a total length of 56 kilometers, all made of super stainless steel.

Generally speaking, the pipes used in oil pipelines are mainly carbon steel pipes, and the biggest problem faced is corrosion prevention.

The first super stainless steel casing was slowly put into the borehole, slowly lowered, then the second, and then the third......

At this time, whether it is Wang Xudong and Zheng Xiaotong, or Liu Yu and Zheng Weiwei, they are all spectators, and they don't have to worry about it, everything is up to the technicians and drilling workers here.

Like Liu Yu and Zheng Weiwei, who are so big, it is the first time to look at the casing in the oil well so closely, and they can see it with relish, Liu Yu even took out his mobile phone, turned on the camera function, and filmed the whole process, ready to take it back, and when he has time, he slowly appreciates it.

The casing is smaller than the diameter of the borehole, and a reasonable gap is formed between the two, in the annular space between the casing and the borehole.

After all the casings were put down, there was no problem after inspection, and the first cement pump truck came over, and injected cement slurry into the annular space between the casing and the well wall to fix the casing on the well wall. The whole process is basically a full mechanical operation, and the speed is very fast.

Next to this drilling well, there were a lot of people around, and everyone rushed to hear the news, watching the whole process of casing and injecting cement paddles with relish.

"I didn't think it was so fast, I thought it would take a few more days!"

"Look, our first borehole is ready!"

Seeing that the cement paddle was filled between the casing and the well wall, and the casing had been firmly fixed, many people were happy, and everyone knew that this was the first official oil well in this oilfield.

"It's still a self-blowing well!"

"I'd love to see oil ejected from this borehole in the future!"

This step has been completed, and only the oil will be extracted later. When this large oil field is almost built and ready for oil extraction, it will be a self-injection well.

When oil needs to be extracted, the casing is perforated through professional equipment to penetrate the oil layer below, artificially forming a hole where the downhole crude oil flows into the casing. When the formation pressure of oil and gas is high, it can flow out of the surface on its own, and this kind of well is called a self-injection well.

This is the self-blowing well!

When using professional instruments to test just now, the data shows that this oil well is a self-blowing well, and a large amount of crude oil can be sprayed out by perforating and penetrating the oil layer in the future.

Now, for the time being, it is not the time for oil extraction, so naturally there is no need to shoot the well, but to cover it first, no, several drillers will bring the manhole cover, cover the manhole, and then put a warning sign.

The first oil well is basically ready, and the other wells have not stopped, they are still working there, and the sound of the drilling rig working can be heard clearly.

The location of these wells was all selected by Lei Ziyuan himself, which was completely in line with his planning and design, and the first oil well had been basically drilled, and the oil could be produced only when the well was shot, and the other wells were.

Lei Ziyuan was going to go to several other wells to take a look in person, and Wang Xudong was no exception, if there were no accidents, the other wells would be almost the same.

Now, Wang Xudong looks at these wells differently, as if they are no longer derricks, but oil wells.

"Hey, Brother Dong, look!"

Liu Yu's eyes were sharp, and he saw that a drilling well not far away was very lively, and there were many people around, Wang Xudong also saw it, and couldn't help but speed up his steps and walked there.

Lei Ziyuan also saw it, was slightly stunned, and his pace accelerated!

This time it's really a big deal!

……………

The second one is sent!

The first two watches, continue to code words, and the third watch will be sent up at about nine o'clock in the evening to meet everyone.