Chapter 755: 1st well

As soon as Wang Xudong walked over, he saw that the drilling rig that was supposed to be rotating down had stopped. It seemed that there was a serious problem. Otherwise, they would not stop for no reason, and would definitely continue drilling.
Wang Xudong doesn’t know much about oil exploration, and he doesn’t need to know much about it.
Lei Ziyuan understood that he is not only an expert in oilfield planning, but also an authority in the field of oil exploration. When he came over, his expression immediately became serious when he saw the situation.
There is no need to ask these drilling workers what problems they encountered, but they can tell at a glance. He walked over, squatted down, and looked carefully.
Those were cuttings, mud and other things drilled out of the borehole. He picked up some of them with his hands, looked at them carefully, and even smelled them under his nose.
Lei Ziyuan said slowly: "It seems that there is no need to continue drilling. The drilling depth is much shallower than I expected."
Wang Xudong knows why there is no need to drill down any more, because if the oil 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 ejected, and it is estimated that the pressure will not be suppressed.
The oil here is all gathered together by Wang Xudong using the "God-level big mine owner" system. It is more than 600 million tons to form a huge oil layer. He also knows the depth of this oil layer. It's deep.
But not everyone is as clear as Wang Xudong. There is a person who looks like an engineer and technician in the drilling team. He has different opinions and suggested: "Professor Lei, I think we can drill a little further. Drill this hole deeper."
Lei Ziyuan waved his hand firmly: "It is not necessary. If you drill down again, there will be a big problem. Let's stop here. Next we need to log operations and then lower the casing."
If you don’t continue drilling, you can log well. Can you lower the casing?
Many knowledgeable people thought in their hearts that 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, and he will definitely not make a mistake.
Just now, based on the cuttings, mud and other things that were drilled out, Lei Ziyuan has already judged that the position of the drill bit is not far from the oil reservoir and can no longer drill. The next step is to lower the casing.
Here, by the way, let’s talk about the oil extraction process.
After the development of oil extraction from the most primitive manual digging to rotary drilling, the extraction technology has gradually matured. The current oil drilling and extraction technology is roughly as follows.
After the oil and gas field development plan is determined, it enters the development process, which includes the two main links of drilling and production. The current Fuchuan Oilfield has just entered the drilling process to prepare for production.
Before drilling, first determine the location of the drilling on the ground (ie, drilling well location), and then lay the foundation for installing the drilling rig at the well location and install the derrick and drilling rig. During drilling operations, relying on the power of the drilling rig to drive the drill pipe and the drill bit to rotate, the drill bit successively breaks down the strata encountered and forms a wellbore (also called a wellbore). The size of the drilling hole is determined by the size of the drill bit.
While the drill bit is breaking the rock formation, it injects drilling fluid (commonly known as drilling mud) into the ground through a hollow drill pipe, and the large amount of cuttings generated by the drill bit in the broken formation is brought to the ground by the circulating drilling fluid. After the ground solids control device removes the cuttings in the drilling fluid, the drilling fluid is pumped into the well again through the drilling pump
The drilling fluid passes through the inner hole of the drill pipe to the water hole of the drill bit, and then flows back to the ground from the annular space between the well wall and the drill string. The drilling process is the process in which the drill bit breaks the rock and the drilling fluid continuously carries out the drill cuttings through circulation and forms the wellbore.
After drilling to the designed depth, special instruments must be run in the wellbore for logging operations. The purpose is to determine the lithology of the downhole formation and the positions of various oil, gas, and water layers, and then run seamless steel pipes smaller than the wellbore ( Also called casing), and inject cement slurry into the annular space between the casing and the well wall to fix the casing on the well wall.
The drilling depth at this point has reached the ideal position, and it is unnecessary to continue drilling. The workers start the drilling rig and withdraw the drill pipe from the wellbore.
The long drill pipes were withdrawn one by one. After all of them were withdrawn, what appeared in front of everyone was a black hole, a borehole that went down vertically.
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 conditions in the borehole, especially oil, gas, and gas. The location of the water layer.
Various data were also detected one by one. The technicians looked at Lei Ziyuan in admiration, thinking in their hearts, they are worthy of experts, their eyes are better than professional instruments, and oil-bearing layers really appeared below them, so continue drilling. Going down, you really have to drill through.
No one wants to see the crude oil underneath being sprayed out at this time under immense pressure, even if it is to be sprayed, if the oil is officially exploited.
"Prepare the casing, put down the first casing!"
The person in charge of this professional drilling team came over and personally directed his workers to start putting down the first casing. This is a stainless steel casing made of super stainless steel.
Lei Ziyuan saw it too, and said with a smile: "Xudong, this is what you call super stainless steel. It is a bit extravagant to use such a material to make the casing."
Wang Xudong said: "This material is of good quality."
Others can't be so luxurious. 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. It is natural to ask for some super stainless steel.
Such casings are generally made of carbon steel, while Wang Xudong uses super stainless steel. The quality of such casings is naturally much better. The corrosion resistance alone is many times stronger than that of carbon steel.
Such wellbore casing can only be regarded as a small test. The entire oil pipeline from Fuchuan Oilfield to Qingyang Port is made of super stainless steel. This is the reason why Wang Xudong told Chen Sanlian that thousands of tons of super stainless steel should be prepared.
First prepare a few thousand tons and process them into oil pipelines with a diameter of 1200 mm. If thousands of tons are not enough, add a few thousand tons. The entire pipeline has a total length of 56 kilometers and is made of super stainless steel.
Generally speaking, the pipes used in oil pipelines are mainly carbon steel pipes, and the biggest problem facing them is anti-corrosion. Like Wang Xudong, the oil pipelines using super stainless steel have basically no corrosion problems.
The first super stainless steel casing was slowly put into the wellbore, slowly lowered, then the second, the third...
At this time, whether it is Wang Xudong and Zheng Xiaotong, or Liu Yu and Zheng Weiwei, they are all spectators. There is no need for them to worry about it. It is the technicians and drilling workers here.
Like Liu Yu and Zheng Weiwei, grown up, this is the first time to see casing running in an oil well at such a close distance. They watched with gusto. Liu Yu even took out his mobile phone and turned on the camera function to take pictures of the whole process. Take it back and appreciate it slowly when you have time.
The diameter of the casing is smaller than that of the borehole, and a reasonable gap is formed between the two, in the annular space between the casing and the borehole wall.
All the casings were put out. After inspection, there was no problem. 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 the whole mechanical operation, and the speed is very fast.
A lot of people surrounded this well. Everyone came here after hearing the news and watched the whole process of running the casing and injecting cement paddle with gusto.
"I didn't want to say this fast, I thought I would drill for several days!"
"Look, our first borehole is ready!"
Seeing that the cement paddle filled the space between the casing and the well wall, and the casing had been firmly fixed, many people were happy. Everyone knows that this is the first official oil well in this oil field.
"It's still a blowout well!"
"I really want to see a scene where oil will be ejected from this borehole in the future!"
This step has been completed, and only awaiting future oil extraction. When the construction of this large oil field is almost ready for oil extraction, it will be a self-injection well.
When it is necessary to extract oil, use professional equipment to perforate the casing to penetrate the oil layer below to artificially form a tunnel for downhole crude oil to flow into the casing. When the formation pressure of oil and gas is high, it can flow out of the ground by itself. This kind of well is called a self-injection well.
Here is the blowout well!
When testing with professional instruments just now, the data showed that this oil well is a self-blowing well. In the future, a large amount of crude oil can be ejected by perforating to penetrate the oil layer.
Now, when the oil is not being exploited yet, naturally, you don't need to shoot the well, but cover it first. No, a few drillers will lift the well cover, cover the well, and put warning signs on it.
The first oil well is basically ready. The other drillings have not stopped. They are still working there. The sound of drilling rigs can be heard clearly.
The well positions for these drillings are all personally selected by Lei Ziyuan~EbookFREE.me~, which is in full compliance with his planning and design. The first oil well has been basically drilled, and oil can be produced only after the well is shot. How many wells are there.
Lei Ziyuan was going to take a look at the other wells in person, and Wang Xudong was no exception. If there were no surprises, the other wells would be almost there.
Now, Wang Xudong looks at these wells with different feelings. It seems that they are no longer derricks, but oil wells.
"Hey, look at Dong Brother!"
Liu Yu was sharp-eyed, and seeing a drilling well not far away was very lively, surrounded by a lot of people, Wang Xudong also saw it, could not help speeding up his pace, and walked towards there.
Lei Ziyuan saw it too, he was slightly startled, and his pace quickened!
This time something really happened!
……………
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