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Unionlever Oilfield Equipment Co., Ltd. (Unionlever OFS) is a core subsidiary of Unionlever International Group Ltd. (Hong Kong), established as the Group’s dedicated division for oilfield equipment manufacturing, technical support, and global supply services.
In-Depth Analysis of Petroleum Drilling Equipment: Integrated Application of Technology and Safety
Release Date:
2025-10-24
Summary
Overview of Drilling Equipment
Drilling equipment encompasses numerous components, including complete surface facilities designed specifically for drilling, specialized drilling tools, and precision drilling instruments. Drilling equipment can be categorized into the rotary system, hoisting system, circulation system, power and transmission system, and control system, collectively forming the drilling operation system. These components can be systematically classified based on their functions, including the rotary system, hoisting system, circulation system, power and transmission system, and control system, which together constitute a complete drilling operation system.
Primary Systems of Drilling Equipment
Rotary System
The core component of the rotary system is the rotary table at the wellhead of the derrick. It drives the drill string and bit to rotate for drilling while resisting back torque. During drilling, the rotary table drives the drill string and bit to rotate via square drill pipes, simultaneously withstanding back torque.
Hoisting System
The hoisting system comprises a set of lifting equipment including the winch, derrick, crown block, traveling block, hook, and wireline. The hoisting system, including the winch and derrick, handles raising and lowering drill string, controlling drilling pressure, and supporting tubulars. The winch primarily manages raising/lowering drill string, running casing, and regulating drilling pressure. The derrick supports the crown block and suspends hoisting equipment/tools while providing structural support for raising/lowering and storing tubulars.
Mud Circulation System
The mud circulation system maintains mud flow, flushes the wellbore bottom, and transmits the energy of injected high-pressure mud to the wellbore bottom. It uses equipment like mud pumps to sustain circulation, transfer energy, and remove cuttings. This system comprises mud pumps, high-pressure mud lines, hoses, swivels, drill strings, and mud solids control equipment. The mud pump is the critical component, drawing mud from the mud pit, injecting it through surface lines into the drill string, propelling it through the drill bit to the wellbore bottom, and carrying cuttings back to the wellhead.
Power and Transmission System
The power and transmission system is another vital component of drilling equipment. It utilizes diesel engines or gas turbines to generate power, which is mechanically transmitted to various working machines. This system includes power units and transmission units, with power units typically employing diesel engines, electric motors, or gas turbines. Transmission units then distribute power to working machines like winches, rotary tables, and mud pumps via mechanical means such as chains, belts, or gears.
Control System
The control system is critical during drilling operations, coordinating all units to meet drilling requirements. It regulates drilling equipment operation to ensure process compliance, with increasing reliance on computerized control in the future. The control system enables precise operations—starting, stopping, speed adjustment, synchronized operation, and direction reversal—for prime movers, winches, rotary tables, mud pumps, and other components via mechanical, pneumatic, hydraulic, or electrical means. Technological advancements have positioned computerized control as the future standard.
Special Equipment and Technologies
Electric Drive Drilling Rigs and Technical Advantages
Electric drive drilling rigs have found extensive application in deep well and offshore drilling operations. Utilizing either DC-to-DC or AC-to-DC drive configurations, these rigs deliver superior power performance and significant economic benefits. Their drive systems primarily fall into two categories: one involves diesel engines or gas turbines generating electricity via DC generators to power DC motors (DC-to-DC drive); The other involves rectifying AC power via thyristors to drive DC motors, known as AC-DC drive. Both systems deliver outstanding power performance. Particularly the latter offers advantages such as flexible power distribution, high installed power utilization, grid-based power supply eliminating the need for auxiliary AC generators, and significant economic benefits, making it the primary development direction today.
Well Control Equipment and Safety
Well control equipment is also an indispensable safety safeguard in oil and gas drilling. It includes devices such as blowout preventers, choke manifolds, kill manifolds, and mud-gas separators. Well control equipment ensures drilling safety, with the blowout preventer at its core. Different combinations of these devices address various drilling scenarios. The blowout preventer (BOP) is the core component, designed to prevent the uncontrolled discharge of drilling mud, oil, gas, or water from the wellbore. Depending on operational requirements, various BOP types exist—including gate-type, rotary, and universal BOPs—installed at the wellhead beneath the derrick to seal the annulus between the drill string and casing or the entire wellhead. Additionally, downhole BOPs are specifically designed to seal the internal space within the drill string. Modern drilling rigs typically incorporate multiple types of blowout preventers to form a wellhead blowout preventer assembly, enabling effective response to diverse drilling scenarios.
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Unionlever Oilfield Equipment Co., Ltd.
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Unionlever International Group Ltd.
(Established Since 2008)
"To be a globally trusted leader in oilfield equipment and integrated supply solutions."
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