There are many kinds of drill bits used in petroleum industry. According to different drilling methods, drills can be divided into diamond drills, roller bits and drag bit, which are the most basic drills.
Among these three kinds of bits, roller bit is the most common and widely used in oil drilling, and its application degree is also relatively deep. Comparing these three kinds of drills, drag bit has the smallest application range. This paper mainly introduces diamond bit and roller bit.
Extended data:
Bit is the main part of drilling equipment, and its main function is to break rocks and form holes. Rotary drill bit is commonly used in petroleum industry at present. Driven by machinery, the rotary drill bit will rotate, which will drive the whole drill bit to move centripetally, and crack and break the rock through cutting and grinding, thus playing the role of downward drilling.
Bit is one of the main drilling equipment. According to the different working environment and regional environment, the specifications and shapes of drill bits should also be different. When using diamond oil, the drill bit should be selected reasonably and scientifically according to the specific needs and specific design scheme.
Scientific selection of drill bit and reasonable determination of drilling fluid in specific drilling work can improve the efficiency and quality of oil drilling, make oil drilling play its own value better and make certain contributions to the development of petroleum industry.
Diamonds need to pay great attention to the following aspects:
First, the price of diamond bit is relatively high, so we should operate it carefully to reduce the damage;
Secondly, the diamond bit has some defects in thermal stability, so the cooling performance and clean conditions of the bit should be ensured when it is used;
Thirdly, its texture is brittle, so the impact resistance of diamond bit will be poor, and strict and standardized operation should be carried out in strict accordance with the relevant regulations of diamond bit.
When selecting roller bit as oil drilling tool, it is necessary to select roller bit according to the actual situation of drilling equipment, the actual situation of formation and the geological data and formation data of adjacent oil wells. When making a choice, you should consider the following questions:
First of all, we should consider whether there is soft and hard interleaving in the drilling formation; Secondly, it is necessary to consider whether deviation prevention drilling and curve operation are needed in oil drilling;
Thirdly, the actual depth of different drilling sections of the same oil well should be considered;
Finally, drilling geology, formation grindability and hardness should be considered.
References:
Baidu encyclopedia-drill