Chapter 461 (1/2)

”It seems that this is not the first time someone has thrown you a note?” Asked Guo Xiang.

”Well, no!” Gu Zhennan nodded.

”Ah?” Guo Xiang stared.

”But I've never seen it.” Gu Zhennan replied, ”I don't have that spare time.”

Guo Xiang puffed a smile, you are self-conscious.

After a class in the library, Gu Zhennan took Guo Xiang to class. They sat together.

Zhou Qing was surprised to see Guo Xiang. Just now she thought she was only sitting with Gu Zhennan occasionally in the library. Now why did she come again? Were they together?

What class is she in? Why haven't you seen it before?

At this time, the teacher began to call the roll. Guo Xiang looked, isn't this Mr. Zhu? In his previous life, he lived next door to his house. When he was a child, he often visited his house.

But at that time, his father was a teacher of everyone in petroleum. In this world, he changed to his mother. I don't know whether he was a neighbor or not. Anyway, his mother was a teacher of Petroleum University. Should he know him?

When teacher Zhu called the roll, Zhou Qing always paid attention to Guo Xiang and found that she didn't arrive. Isn't she a student of the school?

Mr. Zhu began his class. In this class is petrochemical.

When it comes to some low-grade oil wells, the output is not much after one exploitation, and secondary and tertiary exploitation can also be carried out.

There is not only oil, but also water and gas in the oil well. Gas is natural gas. If there is enough natural gas, it will be ejected into a flowing well.

This is the first oil recovery. After the blowout, the reservoir enters the secondary oil recovery stage. Because there is insufficient oil, water and gas inside, the oil is very thick and cannot be pumped up, so water injection and gas replenishment operation must be carried out before it can be pumped out.

The remaining water injection and gas replenishment are useless. The oil is as thick as asphalt and is about to reach the solidification state. At this time, chemical reagent must be added for polymer flooding, and the heavy oil can be extracted only after softening it with chemical polymer.

Guo Xiang thought it was quite interesting to hear this. In his previous life, he seemed to have heard from his father.

Zhou Qing has been staring at Guo Xiang. Seeing that she and Gu Zhennan whisper a word from time to time, Gu Zhennan also smiles and nods. He can't help being jealous.

How tall and cold he is at ordinary times. She thought he was the same to others. Why is he so special to this girl?

And what he said just now was too hurtful. He didn't know himself after being in his class for so long? I'm also known as the class flower by my classmates, okay?

Doesn't that woman dress more westerly? What's the big deal?

Zhou Qing thought more and more angrily, and suddenly stood up.

”This classmate, do you have any questions?” Teacher Zhu looks at Zhou Qing.

”I......” Zhou Qing was a little flustered and suddenly pointed to Guo Xiang. ”Miss Zhu, she's not from our class. No, she's not even a student in our school. I don't know how to get in.”

Everyone looked at Guo Xiang curiously. What's going on?

Guo Xiang rolled his eyes. What's your business if I come in?

”Mr. Zhu...” Gu Zhennan just wanted to stand up and explain. Guo Xiang pulled him, smiled and said, ”why can't students who are not Mr. Zhu come to the class? I think Mr. Zhu's class is very interesting. I have admired it for a long time. Can't you come to sit in? ”

”Nonsense, you are not a student of our school at all. How can you come to attend? You just come, you just come... ”Zhou Qing couldn't tell. She said she came to talk to Gu Zhennan about the object? Doesn't everyone know he has a date?

”Excuse me, Miss Zhu, can't your students come to your class?” Guo Xiang looks at teacher Zhu.

”Of course.” Mr. Zhu nodded. He was naturally very happy to have students choose his class.

But I haven't seen this student before.

”You said you came to my class specially? Let me test you. What chemical reagent is used for polymer flooding? ” Miss Zhu looked at Guo Xiang.

Gu Zhennan's heart lifted up. Doesn't his daughter-in-law understand this?