Views: 60 Author: Site Editor Publish Time: 2022-07-14 Origin: Site
In the exploration and development of petroleum resources, the core is the most basic stratigraphic data. A comprehensive and detailed analysis of the core can provide a reference for the formulation of oil resource development plans, and at the same time, it can also explore oilfield reserves and production stimulation plans, and reasonably predict the development efficiency of oil and gas fields beneficial. In core exploration, drilling coring technology is required. In the drilling process, the gyration phenomenon is common, which will adversely affect the core quality. So what are the factors that affect the rotation of the wheel trencher bit? Let's take a look at it next.
Here is the content list:
l Drill bit structure
l Rock properties
l Operating parameters
Several factors can cause lateral movement of the drill bit, and these factors can also cause the drill bit to spin. As the shark chain bit cutting unbalance force gradually increases. The gyration phenomenon is getting more and more serious.
During the drilling process of the shark chain bit, if the formation hardness is relatively small, the drilling speed is relatively fast, it is difficult to have sufficient time to expand the good diameter, and the probability of the shark chain bit gyration is relatively low. However, during the drilling process, if the formation hardness is relatively large, the drilling speed will gradually slow down, and the wheel trencher bit is prone to whirling. In addition, the viscous formation is easy to cause the mud bag of the drill bit, which can effectively reduce the tendency of gyration. During the drilling process of the loose formation, it is easy to cause the expansion of the good diameter, and it is very easy to cause the gyration of the bit.
As the rotational speed continues to increase, the centrifugal force of the shark chain bit will also continue to increase, causing the wheel trencher bit to be prone to whirling. The main reason is that the relative unbalanced force increases significantly and the weight-on-bit resistance decreases, so the occurrence rate of wheel trencher bit gyration is relatively high.
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