Centrifugal Oil Extractor W0602

Overview

The Centrifugal Oil Extractor W0602 is a purpose-built laboratory instrument engineered for the quantitative recovery of hydrocarbons, formation water, and soluble salts from consolidated geological core samples—primarily used in petroleum geology, reservoir characterization, and upstream geochemical analysis. It operates on the principle of high-speed centrifugal force-assisted solvent extraction, where rotational acceleration (up to 3,000 rpm) drives immiscible phase separation under controlled thermal and mechanical conditions. Unlike conventional Soxhlet or reflux-based methods, this system enables rapid, non-destructive extraction with minimal thermal degradation of volatile fractions, preserving compositional integrity for subsequent GC, GC-MS, or ion chromatography analysis. Designed specifically for geological and metallurgical laboratories, the W0602 integrates mechanical stability, solvent containment, and process repeatability required for ASTM D2797, ISO 10375, and API RP 40-compliant core analysis workflows.

Key Features

• Robust vibration-free chassis with precision-balanced rotor assembly ensures stable operation at sustained high rotational speeds (up to 3,000 rpm), minimizing sample disturbance and enhancing reproducibility across replicate extractions.
• Custom rotor geometry accommodates standard cylindrical core plugs (up to 1.5″ diameter × 3″ length) and accommodates multiple samples simultaneously without cross-contamination risk.
• Dual-path solvent handling system featuring dedicated inlet and outlet ports, enabling closed-loop solvent circulation and reducing exposure to volatile organic compounds (VOCs).
• Integrated solvent recovery still with heated solvent flask (temperature range: ambient to 120 °C), water-cooled condenser, and transparent solvent level windows for real-time monitoring of distillate volume and reflux efficiency.
• Independent temperature controller for both extraction chamber and distillation unit, supporting method-specific thermal profiles (e.g., 60 °C for n-hexane extraction; 85 °C for chloroform-methanol mixtures) in accordance with USP residual solvent guidelines.
• CE-marked electrical architecture with over-temperature and over-pressure safety interlocks, compliant with IEC 61010-1 for laboratory equipment.

Sample Compatibility & Compliance

The W0602 accepts consolidated rock cores—including sandstone, limestone, dolomite, and shale—with porosities ranging from 5% to 35% and permeabilities down to 0.1 mD. Samples are placed in inert, chemically resistant extraction thimbles or stainless-steel baskets compatible with common solvents such as n-hexane, toluene, chloroform/methanol (2:1 v/v), and deionized water for salt leaching. All wetted components are constructed from borosilicate glass, PTFE-lined stainless steel, or anodized aluminum to prevent metal ion leaching during aqueous extractions. The system supports GLP-compliant documentation when paired with external data loggers and satisfies audit requirements for ISO/IEC 17025-accredited testing laboratories conducting routine core flood and saturation analysis.

Software & Data Management

While the W0602 operates via analog front-panel controls (rotary speed selector, dual digital temperature displays, and manual solvent flow valves), it is fully compatible with third-party laboratory information management systems (LIMS) through optional RS-485 or 4–20 mA analog output modules. Users may record extraction duration, rotational speed, solvent temperature, and distillate volume manually into standardized ASTM D2797 reporting templates. For regulated environments, integration with electronic lab notebooks (ELNs) supporting 21 CFR Part 11 audit trails is achievable via external USB data acquisition units and time-stamped CSV export functionality.

Applications

• Determination of original oil-in-place (OOIP) and residual oil saturation (S_or) in reservoir core evaluation studies.
• Quantitative analysis of water saturation (S_w) and dissolved ion content (Na⁺, Ca²⁺, Cl⁻) for formation water chemistry modeling.
• Preparatory extraction prior to Rock-Eval pyrolysis, XRD mineralogical analysis, or SEM-EDS imaging to avoid hydrocarbon interference.
• Method validation and inter-laboratory comparison studies under API RP 40 and ISO 10375 protocols.
• Metallurgical applications involving solvent leaching of oil-contaminated ore concentrates or flotation tailings prior to elemental assay.

FAQ

What solvents are compatible with the W0602?
Commonly used solvents include n-hexane, toluene, chloroform/methanol mixtures, and deionized water—provided they fall within the thermal and chemical resistance limits of borosilicate glass and PTFE components.
Can the W0602 be used for unconsolidated sediments?
Not directly; unconsolidated samples require pre-consolidation or containment in porous ceramic holders to prevent migration during centrifugation. Optional accessory kits for loose sediment stabilization are available upon request.
Is the solvent recovery still capable of fractional distillation?
No—the still is designed for single-component or azeotropic mixture recovery only; it does not support multi-stage fractionation. For complex solvent blends, post-recovery separation requires external fractional distillation apparatus.
Does the system meet explosion-proof requirements for Class I, Division 1 environments?
The base W0602 is not intrinsically safe; however, ATEX-certified variants with purged enclosures and spark-resistant motors can be supplied under custom order.
What maintenance intervals are recommended for long-term reliability?
Rotor balance verification every 200 operating hours, O-ring replacement every 12 months, and condenser coil descaling every 6 months—per manufacturer’s service manual (Revision 3.1, 2023).