The fourth of oil and gas exploration -why do you need an anatomy belt and throw away the drilling?

The practical experience of my country's oil exploration shows that oil and gas fields often do not exist in an oil -containing area, but under the control of a structure zone, they are distributed in groups and bands (oil geological science is called "structure belt oil" To. Why do oil and gas collection be in groups and distribution?
turns out to be formed in the same geological history period in the same geological history. They have the same geological causes and common development history. Therefore, when the oil is moved out of the deep transport, it does not enter a certain structure alone, but in a certain area, from near to far, from low to high, entering each structure. In this way, when a structure belt is in a deep stamped with deep oil sources, the oil and gas can be transported to various structures, so that the local structures on the structure of the structure may fill the oil and gas. In oil exploration, it is often the beginning of a series of oil and gas fields that found oil and gas fields on a structure belt. Therefore, it is necessary to effectively detect the area of ​​the oil field, and we should use the target of discovering the overall oil content of the structure belt to comprehensively deploy drilling.
The comprehensive deployment, overall anatomy, drilling structure zone.
First of all, when you determine the position, you must throw away the drilling. The well must not only hit the high point of the structure, but also at the low part of the structure. In this way, you can use less wells to understand the entire situation of the entire structure. This is because it has not only grasped the commonality of the oil and gas in the structure -the main distribution of oil and gas is mainly distributed in a higher part of the structure; it also seizes its personality -oil and gas can also be enriched in a lower constructor. For example, the first batch of well -exploring wells in Daqing Oilfield hit the local structure high. After seeing oil, he did not turn around around these isolated highs. It was found that there was also abundant oil on the low parts, which confirmed that the entire structure belt was full of oil, and it quickly won the large oil field. On the contrary, after seeing the oil, those who have a short vision are often surrounded by oil wells to make a well step by step to determine the rough range of the oil field. This method is a blind exploration method, often throwing off the large oil fields that are distributed in groups.
Secondly, on the target layer of the exploration, we must pay attention to the known goal layer, but also pay attention to the possible target layer of the non -oil. We must pay attention to the depth and the shallow layer. This is because most of my country's deposit basins deposit in the turbulent geological environment. A large number of land -phase sediments have been deposited, and the oil storage layers have repeatedly appeared. There are many types of oil storage layers. For example, limestone's wind shell can also store oil. Therefore, the target layer and oil storage layer that has been discovered is not necessarily the only oil storage layer in the basin. Essence
In the drilling structure belt, while looking for the back oblique oil gase, it is also necessary to further explorate the stratigraphic oil storage oil and the rocky tubes.
In the constructor's drilling, it is an important principle to always put the large oil field first. Because there are tens of thousands of oil and gas fields in the world, 75%of the oil output are adopted in some large oil fields, and these oil fields account for only 3%of the total number of known oil fields. The United States and Venezuela's deposition basins have been made in many wells. Dozens or even hundreds of oil and gas fields were found in a basin, but the reserves and output of oil were only concentrated in a few large oil gas fields. Therefore, the reasonable deployment of drilling work and putting the rapid discovery of large oil fields first are very important to accelerate the development of the oil industry. Because of the significant increase in oil production, the key is to discover new high -yield oil and gas fields.
Is when looking for large oil fields, do not ignore the small oil fields and low -yield oil fields. For low -yield oil fields, we must make a hundred and low yields to make low yields high. For some small oil fields distributed in large areas, they should not look at them in isolation. The oil layers at different levels of oil fields are connected to different levels on a large area to form a large oil field.
Is when deploying drilling for the structure belt, you must not abandon the overall drilling deployment due to the failure of one or two wells; nor can it be eager to circulate the oil field area in a small area because of the high yield of one or two wells.
Only by adhering to the overall drilling work of the structure zone can we achieve the purpose of finding a large oil field.
In Daqing Oilfield No. 3 Exploring Oil and found the oil field, it is not limited to a structured structure that is limited to oil, but on the basis of finding the overall characteristics of the Daqing structure band A series of explorations, drilling away, only took more than a year to win Daqing's land -phase oil field in one fell swoop.
Mort oil and gas fields such as Dagang Oilfield and Shengli Oilfield are discovered. Although the geological conditions are more complicated, they have adhered to comprehensive evaluation and the overall deployment of exploration work. Great oil field.