The lifting system must be matched to the actual well environment, including fluid viscosity, bottomhole temperature, sand, gas, well trajectory and the operating requirements of the production process.

For heavy oil and thermal recovery wells, the pump should be assessed as part of a complete artificial lift system. Downhole pumping performance, surface drive control, rotor-stator clearance, wellhead protection and operating data are closely connected. A technically sound selection starts with the well condition and continues through commissioning, optimization and long-term operation.

Why Does Heavy Oil Production Require a Specialized Conical Screw Pump Solution?

Heavy oil wells often operate under conditions that place sustained demands on artificial lift equipment. High fluid viscosity increases flow resistance, while sand, temperature cycling, gas and changing loads can affect pump efficiency, torque and intervention frequency.

Thermal recovery introduces an additional layer of complexity. During CSS or SAGD operations, repeated heating and cooling can influence tubing movement, fluid behavior and wellhead sealing requirements. In highly deviated or horizontal wells, rod-tubing contact and axial loading must also be considered during system design.

For this reason, the starting point should not be a standard pump model. The selection should begin with production targets, well geometry, fluid characteristics and the operating risks that must be managed throughout the production cycle.

What Well Conditions Should Be Evaluated Before Selecting a Conical Screw Pump?

Before defining the pump and surface equipment configuration, several well conditions should be reviewed together.

Fluid Viscosity and Temperature

Viscosity changes with temperature, particularly in thermal recovery and extra-heavy oil applications. This affects flow resistance inside the pump and determines how the rotor-stator clearance should be managed during operation.

Sand, Gas and Corrosive Components

Sand can accelerate wear and contribute to pump sticking. Associated gas can affect intake behavior and volumetric performance. H₂S and CO₂ content should also be evaluated when selecting materials and defining operating limits.

Well Depth and Trajectory

Well depth, casing size, deviation and dogleg severity influence pump setting, rod-string behavior and the mechanical loads transmitted through the system. These factors become particularly important in highly deviated and horizontal wells.

Production Method and Operational Objective

A well operated under CSS, SAGD, CHOP, cold production or electrical heating has different process requirements. The system design should account for whether the priority is improved fluid intake, stable cyclic production, reduced intervention frequency, integrated injection-production or a combination of these objectives.

How Does Conical Clearance Control Support Heavy Oil Lifting?

The FERROXIS™ all-metal conical pump assembly uses conical geometry for both the rotor and stator. Unlike a fixed-diameter pumping profile, this structure provides variable radial clearance between the rotor and stator.

That clearance directly affects pump behavior. When the clearance is reduced, volumetric efficiency can increase under lower-viscosity conditions. When the clearance is increased, flow resistance can be reduced so that higher-viscosity media can pass through the pump more smoothly.

This is why the IntelliCPCP® intelligent conical PCP system combines the FERROXIS™ downhole pump with the DynaRL™ synchronous rotation and lifting assembly. The surface drive supports rotor rotation and lifting control, allowing the system to manage clearance in response to operating requirements.

Depending on the selected model and well conditions, IntelliCPCP® is designed for fluid viscosities from 1 to 20,000 mPa·s, bottomhole temperatures from −10°C to 380°C, casing sizes of 5.5 in. and above, and wellbore deviations up to 80°.

Why Should the Pump Be Evaluated as Part of an Integrated Artificial Lift System?

A conical screw pump is only one element of the production system. Pump performance is also shaped by the surface drive, wellhead assembly, downhole positioning, control logic and operating data available to the production team.

Surface Rotation and Lifting Control

The DynaRL™ drive system combines synchronous rotation with lifting control. This provides the mechanical basis for managing the axial position of the conical rotor and, therefore, the operating clearance between the rotor and stator.

Wellhead Protection for Thermal Operations

The IntelliCPCP® wellhead cross assembly incorporates THERMOLOCK™ surface protection components. In thermal recovery applications, this supports integrated injection-production processes and sealing requirements associated with high-temperature operations.

Downhole Stabilization

The Graspos™ balancing assembly provides bottom-set positioning and radial centralization for the conical progressive cavity pump. This is relevant where changes in axial load, temperature or well deviation can affect downhole component positioning.

Drive Control and Operating Visibility

The Synergix™ control system integrates sensors, frequency conversion, process control and a touchscreen interface. Its conical PCP-specific functions include real-time efficiency adjustment, sand management, anti-sticking and fluid-level management.

Which Operating Risks Should a Conical Screw Pump Partner Help Address?

Heavy oil production is often affected by recurring operational issues rather than a single equipment limitation. A complete technical evaluation should identify how the proposed system will address the risks most relevant to the well.

High Torque and Difficult Fluid Intake

As heavy oil cools or viscosity rises, the pumping system may face greater flow resistance and torque demand. Clearance management, pump speed and control strategy should be coordinated to maintain stable operation.

Sand-Induced Sticking and Wear

Sand can cause abrasion and pump sticking, especially when operating conditions change after steam injection or during late-stage production. Sand content, particle behavior and operating parameters should be reviewed before finalizing the system configuration.

Rod-Tubing Wear in Deviated Wells

In deviated and horizontal wells, rod-string contact can contribute to wear and mechanical loading. Downhole stabilization and load management should therefore be evaluated alongside the pump itself.

Intervention Frequency and Production Continuity

A reliable solution should be judged not only by initial production performance, but also by its ability to support stable run life, reduce unnecessary interventions and provide useful operating data for production decisions.

How Can Field Experience Inform the Selection Process?

Field experience is most useful when it reflects comparable well conditions and clearly identifies the operating problem being addressed. For heavy oil projects, relevant examples may include high-viscosity fluid intake, sand-induced sticking, rod-tubing wear, cyclic steam injection and highly deviated well geometry.

Our field applications in heavy oil, thermal recovery and CCUS operations include CSS in shallow highly deviated extra-heavy oil wells, CSS in medium-deep extra-heavy oil wells, cold production in conventional heavy oil wells and combined CCUS with electrical-heating lift in highly deviated wells.

Across the documented project portfolio, the reported results include a 45.63% increase in mean time between failures, cumulative cost savings and efficiency gains of USD 606,300, and a longest pump inspection cycle of 4,710 days. Project results should always be assessed alongside the fluid properties, well structure, production method and operating conditions of the specific well.

What Should Be Included in a Conical Screw Pump Technical Review?

A productive technical review should establish whether the lifting system is suitable for the target well and identify the configuration required for stable operation.

Prepare the Well and Fluid Data

Provide the well profile, casing and tubing specifications, pump setting depth, bottomhole temperature, oil viscosity at the stated test temperature, sand content, water cut, associated gas condition and production target.

Define the Current Operating Issue

Clarify whether the project is intended to address low fluid intake, high torque, frequent sand sticking, rod-tubing wear, steam-cycle limitations, high intervention frequency or another production constraint.

Set Measurable Operating Objectives

Targets may include stable production, improved pump efficiency, reduced workovers, lower energy use, improved thermal recovery performance or a longer pump inspection cycle. Defining these targets early creates a clearer basis for equipment selection and post-installation evaluation.

How Can HXBS Support a Heavy Oil Artificial Lift Project?

Our work in intelligent oil extraction equipment brings together equipment research and development, manufacturing and technical service for integrated surface-to-downhole artificial lift solutions. For conical PCP applications, the engineering review considers the pump, drive, wellhead components, balancing assembly and intelligent control system as one operating package.

This approach is particularly relevant when a heavy oil well requires more than a replacement pump. It supports projects that need a system configuration aligned with thermal recovery processes, high-viscosity fluid behavior, sand risk, complex well trajectories and production-management requirements.

Start with the Well Condition

Effective conical screw pump selection begins with the operating reality of the well. Fluid properties, thermal exposure, sand risk, mechanical loading and production objectives should define the system configuration before equipment is specified.

To begin a technical evaluation, contact us and share the operating conditions of your well, including the production method, fluid data, well geometry and current artificial lift challenge. This creates the basis for a focused discussion of system suitability and configuration.