Project Overview
On November 30, 2024, KTK Energy successfully delivered two sets of 6-3/4″ × 4″ × 60 ft Core Barrel Systems to a key oilfield service client in Indonesia. These systems were deployed in a newly developed exploration block, where high-precision coring operations were required to support reservoir evaluation and geological analysis.
The project objective was to provide a high-reliability coring solution capable of operating under complex downhole conditions, while maximizing core recovery rate, formation integrity, and operational efficiency.
Product Configuration and Engineering Design
The delivered systems were engineered based on API-compliant standards, ensuring compatibility with international drilling operations and rig systems.
Core Technical Specifications:
- Outer Diameter: 6-3/4″
- Core Diameter: 4″
- Core Length: 60 ft
- Connection Type: API standard thread
- Material: High-strength alloy steel with heat treatment
- Application: Conventional and wireline coring in directional and vertical wells
Key Components Included:
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- Core Barrel Assembly (Outer & Inner Barrel)
- Core Catcher System
- Stabilized Coring Bit Interface
- Heavy-Duty Drill Collar Integration Section
Solution Advantages in Field Operations
KTK Energy designed this solution with a strong focus on downhole stability, core preservation, and operational reliability.
Enhanced Core Recovery Rate
The optimized inner barrel anti-jamming design and precision-machined core catcher significantly improved core retention performance. This resulted in:
- Minimal core loss
- Reduced mechanical disturbance to formation samples
- Higher geological data accuracy
Superior Structural Strength
Using high-grade alloy steel and advanced heat treatment processes, the system ensures:
- High resistance to torsion and compression
- Stability in extended 60 ft coring runs
- Reduced tool failure risk in deep formations
Compatibility with Complex Well Profiles
The system is suitable for:
- Directional drilling environments
- High-temperature and high-pressure (HTHP) conditions
- Variable lithology formations
Field Performance Feedback (August 2025)
During a client visit in August 2025, KTK Energy conducted an in-depth technical exchange with two on-site drilling engineers.
Key Performance Feedback:
- Core sample satisfaction rate reached 98%
- Performance exceeded competing products by approximately 10%
- Achieved Top 1 ranking in coring performance within the Indonesian market
Engineers specifically highlighted:
- Excellent core integrity preservation
- Smooth tool run-in and retrieval
- Reduced non-productive time (NPT)
“KTK Energy’s core barrel system delivered exceptional stability and recovery performance. The quality of retrieved core samples is among the best we have seen in this region.”
Application Value for Oil & Gas Operators
Reservoir Characterization
High-quality core samples enable:
- Accurate porosity and permeability analysis
- Reliable lithology identification
- Improved reservoir modeling
Drilling Optimization
- Reduced need for repeat coring runs
- Lower operational risks
- Improved drilling efficiency
Cost Efficiency
- Lower tool replacement frequency
- Reduced downtime
- Higher return on investment (ROI)
Manufacturing and Quality Assurance
KTK Energy operates under a strict quality control system aligned with API standards, ensuring every product meets international oilfield requirements.
Quality Highlights:
- Full material traceability
- Non-destructive testing (NDT)
- Precision CNC machining
- Assembly verification and functional testing
KTK Energy: Trusted Supplier & Engineering Partner
As a hybrid supplier and manufacturing partner, KTK Energy combines:
- In-depth engineering expertise
- Strong supply chain integration in China
- Global project experience in Asia, Middle East, and Africa
We specialize in:
- Core Barrel Systems
- Directional Drilling Tools
- MWD/LWD Components
- Downhole Drilling Equipment
Conclusion
The successful application of KTK Energy’s 6-3/4″ × 4″ × 60 ft Core Barrel Systems in Indonesia highlights our commitment to delivering high-performance, API-compliant drilling solutions tailored for complex oilfield environments.
With a 98% customer satisfaction rate and industry-leading performance, KTK Energy continues to support global clients in achieving efficient, reliable, and data-driven drilling operations.
Contact KTK Energy
For technical specifications, quotations, or customized coring solutions:
KTK Energy – Your Reliable Oilfield Equipment Partner
- Email: sales@ktkenergy.com
- Website: www.ktkenergy.com
