IV. Auxiliary equipment in the drilling process
4.1 Mud circulation system
Mud pump: function and selection points
A mud pump is a device using to transport mud, which is widely using in industries such as petroleum, chemical industry, construction, metallurgy and environmental protection. Its main function is to transport a mixture of solid particles and liquids (such as mud) to the destination.
Mud pumps are a critical part of the drilling process, ensuring a continuous circulation of drilling fluid to cool and lubricate the drill bit. In the oil and gas industry, centrifugal pumps are commonly using in offshore drilling rigs where fluid viscosities are lower. Whereas plunger pumps are more often found in geothermal drilling operations, where high-viscosity mud is necessary to stabilize the borehole.
The following points need to be considered when choosing a suitable mud pump:
Type: Mud pumps are of two types: centrifugal pumps and plunger pumps. Centrifugal pumps are suitable for conveying mud with lower viscosity and are usually suitable for general construction occasions. Plunger pumps are suitable for conveying mud with higher viscosity and are suitable for complex construction environments.
Flow rate: The flow rate of a mud pump generally refers to the volume delivered per minute. When selecting, it is necessary to judge according to the specific usage.
Lift: Lift refers to the height to which the mud pump overcomes resistance to deliver the medium upward. It is selected according to factors such as the delivery distance and height.
Material: The material of a mud pump is generally divided into metal and non-metal materials. Which need to be selecting according to the corrosiveness of the use environment.
Power: The power of a mud pump refers to the power of its motor, which generally needs to be calculating based on the flow rate, lift, etc. of the pump.
4.2 Well control drilling equipment
4.2.1 Blowout preventer: working principle and classification
During oil drilling, it is installed on the wellhead casing head to control the parallel injection of high-pressure oil, gas, and water. When the oil and gas pressure in the well is very high. The blowout preventer can close the parallel port (close it). When heavy mud is pressing into the drill pipe, there is a four-way under the gate plate. Which can replace the mud invaded by gas and increase the pressure of the liquid column. In the parallel to suppress the ejection of high-pressure oil and gas.
BOPs are classified into common BOPs, universal BOPs and rotary BOPs.
Universal BOPs can be activating in an emergency to cope with drilling tools of any size and empty wells. Rotary BOPs can achieve drilling while blowing. In deep well drilling, in addition to two common BOPs, universal BOPs and rotary BOPs are often installing at the wellhead in combination with three or four types. Annular BOPs are usually equipping with a large gate of a gate-type BOP. When in operation, a sealed annular space is forming between the pipe string and the parallel barrel. When there is a pipe string in the well, it can also complete the well sealing alone.
But it will not work after a few uses, and it is not allowing to be closing and using for a long time. The well sealing device is a blowout preventer, which is placing on the four-way above the wellhead. A set of three single, double and ring units are connecting, and the ring is on top. When the pressure in the well is increasing or there is a risk of blowout, the blowout preventer is closed. And the well killing manifold and mud pump connected to the side of the four-way inject drilling fluid to reduce the well pressure. Many blowout accidents are related to the quality and improper use of blowout preventers.
Blowout preventers are using to close the wellhead during oil testing, well repair, completion. And other operations to prevent blowout accidents. They combine the functions of full sealing and semi-sealing into one. And have the characteristics of simple structure, easy operation, and high pressure resistance. They are safety sealing and parallel port devices commonly used in oil fields to prevent blowouts. Blowout preventers are important opening and control oil drilling equipment. Once overflow, gushing, and blowout occur during drilling and parallel operations, the blowout preventer needs to be quickly starting to shut down the well. Once the blowout preventer fails at this time, it will cause serious accidents such as blowouts.
V. Equipment maintenance and management
5.1 Daily inspection points and processes
In the early stage of drilling rig equipment operation, check at least once a day to prevent unexpected failures.
5.2 Planning and implementation of regular maintenance
The oil drilling equipment should be inspected or repairing every three months. The maintenance content includes: machine adjustment, replacement of accessories, line inspection, power switch inspection, and oil addition.
5.3 Common fault diagnosis and repair methods
5.3.1 Before starting
(1) Check whether there are any debris on the equipment production line
(2) Whether all parts are normal.
5.3.2 During starting
Pay attention to whether there are any abnormal noises or abnormal phenomena in each part.
5.3.3 After use
Clean and disinfect immediately after each use.
Check whether all parts of the machine body are damaging due to vibration. The parts that need lubrication must be lubricating.
With the advent of Industry 4.0, many drilling operations now incorporate predictive maintenance technologies. Such as IoT sensors that monitor the temperature, vibration, and wear of equipment components. These sensors can provide early warnings of potential failures, allowing for proactive maintenance and minimizing downtime.
VI. Conclusion
6.1 The key significance of oil drilling equipment to the success of drilling operations
Drilling equipment and technological innovation applications are of great significance to the exploration industry. By introducing new technologies and equipment. Tthe exploration efficiency can be greatly improving, the exploration cycle can be shortening, and resource points can be discovered quickly. The application of new technologies can significantly reduce exploration costs and improve the input-output ratio of resource exploration. The application of innovative technologies helps to promote resource development, tap more exploitable resources. And promote the development and progress of the energy industry. The application of drilling equipment and technological innovation can also effectively ensure engineering safety and reduce the probability of accidents. This innovative application also helps to promote industrial upgrading and improve industry competitiveness. The practical significance of drilling oil gas equipment. And technological innovation applications is multifaceted and helps promote the development and progress of the exploration industry.
6.2 Outlook on the development trend of drilling equipment in the future
With the rapid development of the country, the energy crisis is becoming more and more serious. So the development of drilling equipment and drilling technology has become a top priority. It is necessary to achieve independent production. And manufacturing in the development of oil drilling equipment and drilling technology.
So as to achieve the further development of equipment and technology. In order to achieve the innovative development of drilling rigs. We should first make breakthroughs in technology and achieve technological innovation to manufacture multifunctional and efficient drilling rigs. As China’s drilling technology continues to develop, the professional requirements for drilling drilling rig equipment and technology are getting higher. And higher. Not only in drilling engineering. But also in the exploitation of oil and gas and coal mine development, more advancing technology is needed. Take China’s advanced directional motion technology as an example. It can not only sample anytime and anywhere, but also can achieve directional motion inside hard rocks. This shows that China’s drilling technology has made a breakthrough and is moving towards a more professional direction.
Looking ahead, the future of drilling technology is likely to be shaping by developments in automation and AI. The integration of autonomous drilling systems and real-time data analytics could revolutionize the efficiency. And safety of drilling operations, allowing exploration teams to access previously unreachable reserves and respond to challenges in real-time. As such, the next decade promises to see significant advancements in drilling technology that will play a key role in addressing the world’s growing energy demands.
