Product Specification

Auto Density Control Mixing Skid – Precision Cement Mixing for Oil & Gas Well Cementing

Product Overview

An auto density control mixing skid is a self-contained, skid-mounted cement mixing unit designed to precisely blend dry cement, water, and chemical additives into a homogeneous cement slurry of consistent density. It is an essential component of modern oil and gas well cementing operations, where the quality and consistency of the cement slurry directly impact well integrity, zonal isolation, and long-term production performance.

Unlike traditional batch mixing methods that rely heavily on operator skill and manual adjustments, an auto density control mixing skid automates the entire mixing process. It continuously monitors slurry density and automatically adjusts the feed rates of dry cement and water to maintain the target density within a tight tolerance. This level of precision ensures that the cement slurry meets the exact specifications required for each stage of the well—from surface casing to production liner.

Our auto density control mixing skids are available in a range of configurations, from compact single-pump units suitable for smaller operations to high-capacity twin-pump skids designed for large-scale offshore and onshore projects. All units feature advanced ACM (Auto Control Mixing) systems—the latest in mixing and density control technology—and are built for reliable performance in demanding environments.

Key Features – Engineered for Precision, Safety, and Reliability

1. Advanced ACM Auto Density Control System

Our mixing skids are equipped with ACM-III.1 or ACM-IV.1 auto density control systems. The ACM-IV.1 system provides full-auto control of density and liquid level, making density feedback and control more timely and accurate. The system greatly simplifies equipment operation based on working habits in oilfields and optimized software algorithms.

2. High-Energy Recirculation Jet Mixing System

The skid utilizes advanced high-energy mixing technology. Through the combination of a high-energy mixer, recirculation between the recirculation pump and mixing tank, and blending by agitators, it ensures stable, high-quality slurry.

3. Dual-Tank Design for Superior Slurry Quality

The mixing tank is divided into mixing tub and averaging tub. This design improves slurry quality by allowing the slurry to remain in the averaging tank for additional mixing time, making the slurry more even and stable. The average tank volume ranges from 1.2 m³ to 3.2 m³ depending on the model.

4. Non-Radioactive Densitometer

The skid is equipped with a F300 non-radioactive densitometer. This type of densitometer is safe, reliable, and easy to wash—eliminating the regulatory and safety concerns associated with radioactive density measurement.

5. Off-Centre Dry Cement Valve

The skid features a new off-centre dry cement valve that effectively prevents bulk material from choking, ensuring smooth operation.

6. Independent Power and Pump Systems

The mixing power is supplied by an independent power unit, which increases the actual operation power of the main engine. The power source of the slurry recirculation pump and the triplex pump are independent, so slurry quality is not affected by fluctuations in triplex pump pressure or flow rate.

7. Friendly User Interface

The skid features a 10-inch operation screen for convenient monitoring of working data. The user interface is designed to adapt to working habits in oilfields, simplifying operation.

8. Comprehensive Safety Systems

Emergency killing system – Air inlet shutoff system for enhanced safety

Plunger pump over-pressure protection system

SPS non-leakage packing system

9. Portable Data Acquisition

The skid is equipped with a portable wireless/wired data acquisition system for real-time monitoring and recording of operation data.

10. Compact and Transportable Design

The skid features a logical layout and compact structure, with forklift holes and lift pins for easy transportation and hoisting.

Technical Specifications

ACS-III-180 – Compact Single-Pump Mixing Skid

ACS-IV-300 – High-Capacity Mixing Skid

PCS-611A – Single Pump Cementing Skid (Mixing + Pumping)

Applications

Our auto density control mixing skids are suitable for a wide range of cementing and pumping operations:

Primary Cementing – Securing surface casing, intermediate casing, and production casing in place

Secondary / Remedial Cementing – Squeeze cementing, plug cementing, and liner cementing

Acidizing Treatments – Pumping acid solutions for well stimulation

Pressure Testing – Hydrostatic testing of wellbore equipment

Other Fluid Pumping – Brine, mud, and other well service fluids

Onshore and Offshore Operations – Suitable for land, desert, and offshore environments

Why Choose Our Auto Density Control Mixing Skid

Precision density control – ±0.02 g/cm³ accuracy ensures consistent, high-quality slurry

Advanced ACM technology – ACM-III.1 and ACM-IV.1 systems for full-auto control

Non-radioactive densitometer – Safe, reliable, and easy to maintain

High-energy mixing – Superior slurry quality through advanced mixing technology

Compact and portable – Skid-mounted design with forklift holes for easy transport

Flexible configurations – Single-pump or twin-pump; 180 HP to 475 HP power options

All-weather capability – Designed for -25°C to +55°C operation

Proven performance – Successfully deployed in oilfields worldwide

Contact us to learn more about our auto density control mixing skid and how it can enhance the precision, reliability, and efficiency of your cementing operations.