Kelly Saver Sub

Kelly Saver Sub

A Kelly Saver Sub is a heavy-duty drilling accessory installed between the Kelly and the drill string swivel or drill pipe to protect the Kelly's threaded connections from excessive wear and damage caused by repeated make-up and break-out operations. By acting as a sacrificial connection, the Kelly Saver Sub extends the service life of the Kelly, reduces maintenance costs, and improves drilling efficiency in rotary drilling operations.

Our Kelly Saver Subs are available for sale and lease, providing reliable performance for onshore and offshore drilling contractors, exploration companies, and oilfield service providers.

Applications

Rotary drilling operations

Oil and gas exploration wells

Onshore drilling rigs

Offshore drilling platforms

Water well drilling

Geothermal drilling

Mining exploration drilling

Directional drilling operations

Drill string protection

Drill pipe connection management

Technical Features

Manufactured from premium forged alloy steel.

Precision-machined API pin and box threaded connections.

Heat-treated for superior strength and wear resistance.

High torsional strength for demanding drilling conditions.

Protects Kelly threads from repeated wear.

Corrosion-resistant surface treatment.

Suitable for high-torque drilling applications.

Excellent fatigue and impact resistance.

Compatible with standard rotary drilling systems.

Designed for long service life and easy replacement.

Available Types

Standard Kelly Saver Sub

Heavy-Duty Kelly Saver Sub

API Regular Kelly Saver Sub

API IF Kelly Saver Sub

Custom Thread Kelly Saver Sub

High-Torque Kelly Saver Sub

Sour Service Kelly Saver Sub

Typical Specifications

Parameter Specification

Outside Diameter (OD) 3½" – 8"

Length 24" – 60"

Connection API REG, IF, FH, NC Series

Material High-strength alloy steel

Heat Treatment Quenched and Tempered

Torque Capacity High-torque drilling applications

Standard API Spec 7-1

Service Standard and Sour Service (NACE compliant options)

Key Benefits

Protects expensive Kelly threads from wear.

Extends the service life of the Kelly.

Reduces maintenance and replacement costs.

Improves drilling efficiency.

Provides reliable high-torque performance.

Minimises downtime during drilling operations.

Enhances drill string reliability.

Suitable for harsh drilling environments.

Easy to install and replace.

Long operational lifespan.

Industries Served

Oil & Gas Exploration

Offshore Drilling

Onshore Drilling

Geothermal Drilling

Water Well Drilling

Mining Exploration

Energy Service Companies

Drilling Contractors

Petroleum Engineering Firms

National Oil Companies (NOCs)

Kelly Saver Sub Sales and Lease

We supply new and refurbished Kelly Saver Subs from leading global manufacturers for both sale and short- or long-term lease. Every unit undergoes rigorous dimensional inspection, thread gauging, non-destructive testing (NDT), and quality assurance to ensure compliance with API standards before delivery.

Our Sales & Leasing Services Include

New and refurbished Kelly Saver Subs.

Short-term, long-term, and project-based rental options.

API-certified inspection and quality assurance.

Thread inspection and recertification.

Refurbishment and repair services.

Technical consultation for equipment selection.

Fast mobilisation for offshore and onshore operations.

Worldwide logistics and delivery.

Complete documentation, inspection reports, and test certificates.

Our Kelly Saver Subs are engineered to provide exceptional durability, thread protection, and dependable performance in demanding drilling environments. Designed to reduce wear on valuable Kelly connections, they help operators lower operating costs, minimise non-productive time (NPT), and improve overall drilling efficiency.