GB/T 39209-2020 in English

VALID

Offshore platform rig heave compensating drawworks

Issued on:2020-10-11
Implemented on:2021-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $250.00
$243.00

Standard No:	GB/T 39209-2020
Document status:	VALID
Title in English:	Offshore platform rig heave compensating drawworks
Title in Chinese:	海洋平台钻井升沉补偿绞车
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2020-10-11
Implemented on:	2021-05-01
ICS Classification:	47.020.20-Marine engines and propulsion systems
Chinese Classification:	U35-Special devices for ocean platform
Professional Classification:	GB-National Standard
Related Topics:	drilling compensate Pacific Ocean sedimented ocean offshore oil rig dose compensation Pacific Ocean Offshore platform detection Lift coastal drilling platform winch Ocean platform GBT39209 GB/T 39209-2020 Offshore platform underwater detection Ocean engineering platform Drawworks for oil drilling and workover Offshore platform electric box Offshore platform control cabinet Calcein-AM/PI Compensation Displacement platform standard Sea-to-sea horizontal directional drilling

《GB/T 39209-2020海洋平台钻井升沉补偿绞车》由TC137（全国船用机械标准化技术委员会）归口，主管部门为国家标准化管理委员会。

Introduction

Interpretation of the core content of the standard

Technical dimensions	GB/T39209 requirements	Industry comparison
Compensation accuracy	≥80%	International mainstream standard 75-85%
Compensation period	7-14 seconds	Deepwater equipment requires ≤10 seconds
Structural strength	1.25 times the maximum hook load	API standard 1.15 times

Key technical requirements

5.1 Design specifications

The compensation system shall include four parts: power source (hydraulic motor/variable frequency motor), energy storage unit (gas cylinder + pipeline), detection unit (MRU motion reference unit) and control device. The selection of hydraulic motor shall comply with JB/T10829 standard, and the control device shall have dual redundancy of overload protection and power failure protection.

5.5 Performance indicators

Typical working case: Under the compensation load of 2,200kN, the fast rope speed of 120-level winch shall reach 20m/s, and the matching motor power shall be ≥6,600kW. The cleanliness of the hydraulic system shall meet ISO4406 standard-/16/13, which is 2 levels higher than the ordinary industrial hydraulic system.

Standard Evolution Analysis

This standard includes electromagnetic compatibility (GB/T10250) and environmental adaptability (CB1146 series) as mandatory requirements for the first time, reflecting the stringent requirements of deep-sea operations on equipment reliability. Compared with SY/T5532-2016, the quantitative provisions for the set pressure of the accumulator safety valve (1.05-1.1 times the working pressure) are added.

Implementation suggestions

Material selection: Structural parts should preferably use DH32 grade marine steel of GB/T712-2011, and the piping system should use 022Cr19Ni10 stainless steel
FMEA analysis: GB/T7826 failure mode analysis must be performed on the load-bearing parts, and the stress should be controlled at 40% of the yield limit (rated working conditions)
Test verification: Type inspection should include 72-hour salt spray test (CB1146.12) and -20℃ low temperature start-up test

More samples: QC/T 942-2021 JGJ 94-2008 DL/T 5154-2012

Sample only — not a preview of GB/T 39209-2020