API 7K rotary drilling hose resists high pressure 7500PSI
In petroleum drilling operations, API 7K rotary drilling hose, as a key connection component of the riser system, has become an indispensable safety guarantee in drilling operations due to its excellent high-pressure tolerance (7500PSI) and excellent flexible connection characteristics. This article, written by LETONE Industrial Pipe Division, will explain in detail the technical characteristics, structural advantages and key points of field application of this special hose.
I. Core Features of the Product
1. Authoritative Certification Guarantee
Strictly complies with API Specification 7K standards and has passed ISO9001 quality management system certification to ensure reliability under extreme working conditions.
2. Ultra-high pressure working capacity
Pressure range covers 15007500PSI (10.351.7MPa)
Burst pressure is more than 4 times the working pressure
Specially designed pulse fatigue performance, can withstand more than 200,000 pressure cycles
3. Dynamic flexible connection
Patented corrugated structure design can absorb:
±15° angular displacement of the riser system
Axial compensation of 5% of the hose length
Effectively alleviate the vibration harmonics generated by the mud pump
II. Innovative structural analysis
Intelligent end connection system Using forged alloy steel flange Integrated pressure sensor interface Anti-loosening double insurance locking mechanism
III. Typical application scenarios
1. Deep well/ultra-deep well operation
Successfully solve the vibration fracture problem of traditional metal manifolds in well operations above 8000m.
2. Offshore drilling platform
DNV certified, withstanding 16-level typhoon conditions in South China Sea operations.
3. Shale gas fracturing operations
Continuously withstand pressure fluctuations of 20 fracturing operations, with a service life of 3 times that of conventional products.
IV. Usage and maintenance specifications
1. Installation technical requirements
Bending radius ≥ 8 times the nominal diameter
Pre-tightening torque control ±5% error range
100% pressure test record required
2. Intelligent monitoring solution
Suggested supporting installation:
Real-time pressure monitoring system
Wire layer integrity detection device
Three-dimensional motion trajectory recorder
3. Failure warning standard
Must be replaced when the following conditions occur:
Snake-shaped distortion of the outer layer
Joint displacement exceeds the design value by 10%
Inner diameter deformation>3%
Surface temperature abnormally rises by 20℃
API 7K rotary drilling hose perfectly solves the contradictory needs of high pressure and flexibility through material innovation and structural optimization. With the integration and application of intelligent technology, this product will continue to provide more reliable connection guarantee for the safe and efficient development of oil and gas fields. It is recommended that users establish a full life cycle management system to maximize the performance advantages of the product.
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