Deep-sea Heavy Equipment, Pressing Forward | Letone Technology API 7K/16C High-pressure Flexible Petroleum Pipelines Empower Offshore Drilling Platforms

As domestic offshore oil and gas development continues to advance into deep water, open sea and complex formations, various drilling platforms in the South China Sea keep exploring subsea oil and gas resources. The stable operation of a platform relies not only on its large steel structure main body, but also on an invisible yet vital "vascular system" — high-pressure flexible pipelines for offshore platforms. High-pressure delivery of drilling mud, cement pumping for cementing operations, emergency control of choke and kill operations... Every critical process imposes stringent requirements on the pressure resistance, corrosion resistance, temperature tolerance and safety reliability of high-pressure pipelines. The offshore operating environment is harsh, with combined challenges including salt spray corrosion, hydrogen sulfide attack, sharp temperature fluctuations, dynamic bending and vibration of equipment. Ordinary pipelines are simply not up to the task.

With over two decades of dedication to ultra-high-pressure fluid technology, Letone Technology's self-developed API 7K and API 16C series high-pressure flexible petroleum pipelines have been successfully deployed in multiple key domestic offshore drilling platform projects such as Wenchang, Wushi and Lufeng. Tailored for complex deep-sea operating scenarios, they deliver highly reliable flexible connection solutions for offshore drilling.

Adaptable to Five Extreme Marine Working Conditions with Full Coverage of Core Scenarios Compared with onshore operations, pipelines on offshore platforms operate long-term under extreme conditions featuring high pressure, corrosion and dynamic bending.

Targeting the pain points of deep-sea drilling, cementing and well control operations, Letone Technology has optimized product performance to precisely adapt to five harsh working conditions: superimposed high-pressure loads, hydrogen sulfide corrosion, marine salt spray erosion, continuous dynamic bending and emergency fire resistance protection, so as to fully guarantee operational safety.

Drilling Transportation Scenario: API 7K rotary drilling and vibration damping hoses serve as the primary transmission pipelines for drilling and cementing operations.

They can withstand continuous impact from high-pressure mud, and effectively offset displacement and vibration caused by top drive rotation and platform shaking. Suited for composite working conditions of superimposed high pressure and dynamic bending, they ensure stable drilling transportation.

Cementing Operation Scenario: API 7K High-pressure Cement Hoses Adapted to high-pressure operating environments, they stably convey various corrosive media such as water-based mud, oil-based mud and cement slurry, ensuring stable pressure and zero leakage throughout the cementing process. Resistant to medium corrosion and high-pressure loads, they support the reliable execution of cementing procedures.

Well Control Safety Scenario: API 16C Flexible Choke and Kill Hoses

As a critical component of the platform choke and kill manifold, it is specially designed to handle sudden hazards such as abnormal downhole high pressure, overflow and well kick, and undertakes kill fluid delivery tasks, serving as the core defense line for well control safety. The outer layer of the hose is equipped with a stainless steel armored protective structure, which can resist mechanical damage caused by offshore hoisting, dragging and equipment collision, and greatly improve salt spray corrosion resistance to adapt to harsh marine operating environments.

Three Core Values to Effectively Ensure Efficient and Safe Deep-sea Operations

The core requirement of offshore oil development for equipment is not basic usability, but stable performance under complex working conditions and reliability in emergency scenarios. Validated by multiple practical deep-sea projects, Letone Technology API 7K and API 16C series high-pressure flexible petroleum pipelines address the pain points of offshore drilling pipeline operations from three dimensions: safety, stability and compliance.

Consolidate the safety bottom line with multi-layer protection against extreme risks The product adopts a layered structural protection design, where each layer has clear responsibilities and works together for protection. For the API 16C flexible choke and kill hose, its inner rubber layer is made of HNBR/UPE material to resist corrosion from media such as hydrogen sulfide. The reinforcement layer features a multi-layer high-strength steel wire structure to bear ultra-high operating pressure. The outer rubber layer uses special fire-resistant and high-temperature resistant synthetic rubber, plus a stainless steel armored protective layer, delivering fire resistance, impact resistance and corrosion resistance. Benefiting from the sophisticated multi-layer protection design, this series of hoses can efficiently cope with various well-control emergencies. It can maintain stable and safe operation for 30 minutes even under an open flame environment of 704°C, firmly safeguarding the red line of safe operation.

Full working condition adaptability to greatly improve equipment operation stability Wide temperature range design of -29℃/-20℃ ~ +121℃, salt-spray resistant outer rubber, bending-fatigue resistant steel wire structure, sealing with integrally forged couplings… Every design is optimized targeting the pain points of marine working conditions. It ensures stable pipeline operation under combined effects of high pressure, corrosion, vibration and salt spray, effectively reducing equipment failures, unplanned shutdowns and pipeline replacement frequency, and cutting operation and maintenance costs.

Standardized compliance for compatibility with various platform products at home and abroad Manufactured in strict accordance with international industry standards API 7K and API 16C. It can provide authoritative certifications including API product certification from the American Petroleum Institute and ABS type approval from the American Bureau of Shipping, featuring outstanding compliance and versatility. The matched integral unions and flange couplings enjoy excellent compatibility, enabling seamless connection with manifold systems of offshore platforms at home and abroad. It reduces time and costs for equipment selection, adaptation and connection, and fits all types of offshore oil and gas development projects.

Domestic offshore oil and gas development is continuously upgrading toward deep water, low-permeability complex reservoirs and the joint development model of oilfield clusters. Operating scenarios are becoming more complex and equipment working conditions harsher, with rising requirements on the performance, stability and durability of core supporting pipeline equipment. Drawing on years of technical accumulation and project experience in the field of fluid transmission for oil drilling and production, Letone Technology API 7K and API 16C series high-pressure flexible petroleum pipelines feature standardized design, condition-based optimization and combat-proven reliability to deliver safe, stable and long-service-life flexible transmission solutions for deep-sea drilling platforms. Every meter of pipeline deployed in deep-sea operations serves as a critical guarantee for the safe operation of equipment.

Going forward, Letone Technology will continue to focus on the localization and intelligent development trend of offshore oil and gas equipment. Upholding the development strategy of "Original Innovation for Leadership, Altruism for Synergy", the company will rely on technological innovation and unwavering quality commitment to safeguard the safety of offshore oil and gas operations, and continuously empower national energy security and the development of a maritime power.