LACT & ACT Units
Automated Custody Transfer systems for fiscal crude oil metering
Automated Custody Transfer
Zelentech supplies LACT (Lease Automatic Custody Transfer) and ACT (Automatic Custody Transfer) units designed for fiscal metering of crude oil at production facilities, pipeline entry points, and storage terminals. Design and key components are sourced from Louisiana, USA, with skids and piping built locally for larger units — ensuring high quality, rapid deliveries, and systems that work reliably year in and year out.
Each unit is a complete, skid-mounted metering system that includes positive displacement meters, water cut analyzers, static mixers, iso-kinetic sampling systems, and flow computers. All measurement is fully traceable to national standards.
Field-Proven Systems
Our LACT units are used throughout the Gulf of Mexico by major oil companies and pipeline operators. Each system is designed to meet the specific requirements of the installation, including flow rates, line sizes, pressure ratings, and local regulations.
Units can be supplied in a range of configurations from simple single-meter skids to complex multi-stream systems with integrated provers, chemical injection, and redundant instrumentation.
Key Components
Positive Displacement Meters
High-accuracy PD meters for fiscal-grade volume measurement of crude oil and refined products.
ZT-100 Water Cut Analyzers
Integrated Zelentech ZT-100 water cut analyzers for continuous BS&W determination and net oil calculation.
ZTMX Static Mixers
Pipeline mixing elements upstream of sampling and measurement points to ensure representative readings.
Sampling Systems
Iso-kinetic sampling systems and sample pots for laboratory analysis per API MPMS Chapter 8.
Flow Computers
Custody transfer flow computers with volume correction, net oil calculation, and ticket generation.
Bi-Directional Provers
Optional integrated provers for on-site meter calibration traceable to national standards.
Applications
Pipeline Entry Points
Fiscal metering at the point where crude oil enters a common carrier pipeline, establishing custody transfer between producer and transporter.
Production Leases
Automated lease metering replacing manual tank gauging with continuous, traceable measurement for production accounting.
Storage Terminals
Metering at tank farm inlets and outlets for inventory management, blending control, and custody transfer at loading/unloading facilities.
Offshore Platforms
Compact LACT skids for offshore installations where space and weight are constrained but fiscal accuracy is required.
Specify Your LACT System
Provide your flow rates, line sizes, pressure ratings, and measurement requirements and we will design a complete custody transfer solution.
