High-Capacity, Multi-Tank Configuration
The fully automatic LAS features a total of 8 liquid storage tanks, enabling the system to handle multiple additive types simultaneously. This multi-tank configuration provides:
Uninterrupted operation – Switch between tanks without stopping the cementing job
Flexible formulation – Handle complex additive recipes with multiple components
Extended run time – Large total storage capacity for long-duration cementing operations
| Parameter | LAS-H350 Explosion-Proof Configuration | Full-Automatic LAS Configuration |
|---|---|---|
| Additive Delivery | Continuous, Automatic | Continuous, Automatic |
| Number of Liquid Storage Tanks | 4 × 350gal | Up to 8 tanks |
| Motor | Explosion-proof frequency converter, 55KW / 460V / 60HZ | Customizable |
| Hydraulic System | Integrated | Integrated |
| Control Accuracy | ±0.02 g/cm³ (1.3~2.5 g/cm³ range) | ±0.02 g/cm³ |
| Conveying Accuracy | — | Up to 99.5% |
| Overall Dimensions (L×W×H) | 4,600 × 2,000 × 3,000 mm | Customizable |
| Dry Weight | 5,000 kg | Customizable |
| Operating Temperature | -20°C ~ +50°C | -20°C ~ +50°C |
| Certification | DNV, Explosion-Proof (Zone II) | DNV (optional) |
| Viscosity Suitability | — | Suitable for slurries with viscosity over 95% |
| Control System | Flow automatic control, mass flowmeter | Flow automatic control, data acquisition |
The Continuous Liquid Additive System is deployed across a broad spectrum of cementing operations:
Offshore Platform Cementing – The system is specifically designed for offshore oilfield cementing operations, with DNV certification and explosion-proof configurations available
Deep Water Cementing – Precision dosing is critical in deepwater operations where slurry performance margins are narrow
Onshore Cementing Operations – The system can be deployed on land-based wellsites with appropriate configurations
Hazardous Area Operations – Explosion-proof configuration (Zone II) enables safe operation in potentially explosive atmospheres
High-Viscosity Slurry Cementing – Suitable for cement slurry systems with viscosity over 95%
Complex Formulation Cementing – Multi-tank configuration enables handling of complex additive recipes
Long-Duration Cementing Jobs – Continuous operation capability ensures consistent additive delivery throughout extended jobs
SJ Petro offers continuous liquid additive systems in a variety of configurations:
By Configuration Type:
1. Full-Automatic Continuous LAS – Complete system with up to 8 liquid storage tanks, automatic flow control, data acquisition, and conveying accuracy up to 99.5%
2. LAS-H350 Explosion-Proof System – Compact system with 4 × 350gal tanks, explosion-proof motor (55KW), DNV certification, and Zone II certification
By Mounting Configuration:
3. Skid-Mounted LAS – Compact, portable package for offshore and onshore deployment
4. Containerized LAS – Standard shipping container configuration for easy transport
5. Truck-Mounted LAS – Integrated into truck-mounted cementing units
By Tank Configuration:
6. Multi-Tank LAS – Up to 8 tanks for handling multiple additive types simultaneously
7. Single-Tank LAS – Compact configuration for simple additive requirements
By Control System:
8. Basic LAS – Manual control with flow monitoring
9. Automatic LAS – Full closed-loop automatic flow control with data acquisition
10. Intelligent LAS – Fully automatic with unmanned operation capability
Every operation presents unique challenges, and SJ Petro's engineering team delivers tailored solutions through comprehensive OEM and customization capabilities:
Custom Tank Configuration – Choose the number and size of liquid storage tanks to match your additive requirements
Explosion-Proof Certification – Zone II or other hazardous area certifications available
Offshore Certification – DNV, ABS, or other marine certifications
Control System Customization – Manual, automatic, or fully intelligent control systems
Flowmeter Selection – High-precision mass flowmeters or other flow measurement technologies
Module Design – Custom module configurations for transport and installation constraints
Integration with Existing Cementing Units – Design the LAS to interface seamlessly with your existing equipment
Climate Engineering – Customize for extreme temperature, humidity, or environmental conditions
Data Acquisition – Custom reporting, logging, and remote monitoring capabilities
Pioneer in Continuous Liquid Additive Technology
SJ Petro, in collaboration with CNOOC, developed the first fully automatic continuous liquid injection equipment in China to successfully achieve industrial application. We have fully mastered the key core technology of fully automatic cementing equipment application.
Over 30 Years of Cementing Expertise
SJ Petro began developing cementing equipment in the 1980s. With more than 30 years of continuous engineering and manufacturing experience, we have mastered the design and production of series plunger pumps, automatic mixing control systems, and complete cementing units.
Complete In-House Manufacturing
SJ Petro offers 200 models of products falling in four major categories and 12 series. We have established seven production lines for drawworks, gear boxes, cylinders, masts, high pressure manifolds, plunger pumps and post treatment, and three assembly lines for drilling rigs, workover rigs, and cementing and fracturing equipment.
Industry-Leading Quality & Innovation
SJ Petro has been successfully selected as a national industrial Internet innovation pilot application case and a national-level pilot demonstration enterprise for the integrated development of new generation information technology and manufacturing. Annual R&D investment accounts for more than 5% of total sales.
API-Certified Quality
SJ Petro holds API, ISO9001, and HSE management system certifications.
Proven in the Field
The fully automatic continuous liquid injection equipment successfully completed its first sea trial in the cementing operation of the "Nanhai 5” drilling platform, demonstrating its readiness for the most demanding offshore operations.
One-Stop Solution Provider
Beyond manufacturing, we offer equipment inspection, testing, and major overhaul services. From initial design to field service and spare parts supply, SJ Petro delivers complete oil and gas exploration and production equipment solutions.
Q: What is a Continuous Liquid Additive System (LAS)?
A: The Continuous LAS is an automated system designed to continuously add liquid additives into cement slurry during oilfield cementing operations. It replaces manual batch addition with automatic, continuous, unmanned intelligent operation.
Q: What is the dosing accuracy of the Continuous LAS?
A: The system delivers conveying accuracy as high as 99.5%, with density control accuracy of ±0.02 g/cm³ across a density range of 1.3–2.5 g/cm³.
Q: How many liquid storage tanks does the system have?
A: The fully automatic LAS features up to 8 liquid storage tanks. The LAS-H350 explosion-proof configuration features 4 × 350gal tanks.
Q: Is the system suitable for offshore operations?
A: Yes. The system is specifically designed for offshore oilfield cementing operations and is available with DNV certification and explosion-proof certification (Zone II) .
Q: What is the operating temperature range?
A: The system operates reliably from -20°C to +50°C.
Q: What types of additives can the system handle?
A: The system can handle cementing fluids such as retarders, fluid loss reducers, dispersants, and other liquid additives. It is suitable for cement slurry systems with a viscosity of over 95%.
Q: How does the system improve safety?
A: The Continuous LAS enables unmanned intelligent operation, eliminating the need for manual handling of potentially hazardous chemicals and reducing crew exposure to additives.
Q: What is the power requirement for the LAS-H350?
A: The LAS-H350 features an explosion-proof frequency converter motor rated at 55KW, 460V/60HZ.
Q: What is the weight and dimensions of the LAS-H350?
A: The LAS-H350 has overall dimensions of 4,600 × 2,000 × 3,000 mm and a dry weight of 5,000 kg.
Q: Are SJ Petro products API certified?
A: Yes. SJ Petro holds API, ISO9001, and HSE management system certifications.
Q: Do you offer OEM or customized solutions?
A: Absolutely. We offer comprehensive customization including tank configuration, explosion-proof certification, offshore certification, control systems, module design, and integration with existing cementing units.
Q: Has the system been proven in actual operations?
A: Yes. The fully automatic continuous liquid injection equipment successfully completed its first sea trial in the cementing operation of the "Nanhai 5” drilling platform, becoming the first such equipment in China to successfully achieve industrial application. After more than 200 performance and quality tests, the system has been validated for field operations.
Tag: Heavy duty cementing equipment | Cementing Equipment / Cementing Units | Cementing equipment manufacturers | Cementing equipment supplier
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