Working Principles of Oil Drilling Rig Braking Systems and Brake Pad Functions

2025-09-22 20:01:36

Working Principles of Oil Drilling Rig Braking Systems and Brake Pad Functions

Introduction

Oil drilling rig brake pads are core safety components of the rig's drawworks system, and their performance directly impacts well control safety and operational efficiency. This article analyzes the critical role of brake pads in drilling rig braking from the perspective of mechanical transfer.

Main Text

Dynamic Principles

Drilling rig brake systems convert kinetic energy into heat through hydraulic/mechanical devices. The friction coefficient between the brake pad and the brake hub must be stable within the range of 0.35-0.45 (API SPEC 7K standard). When braking a typical 3000 horsepower rig, a single pad can withstand instantaneous pressures up to 5 MPa.

Special Operating Requirements

High-temperature resistance: During deep-well operations, friction surface temperatures can reach 600°C.

Anti-adhesive wear: Prevents brake failure caused by metal transfer.

Stability in humid environments: Offshore platforms must pass NACE MR0175 corrosion testing.

Failure Warning Signs

Replacement is required when thickness wear exceeds one-third of the original design value or radial cracks appear to prevent a drop in braking torque and the resulting drill slip.