Pain-Point Scenario: Cold Heavy Oil, Strong Sand Control, Weak Production

Many unconsolidated heavy oil reservoirs enter development with strict sand-control strategies: heavy screens, tight completions, and conservative drawdowns. Equipment stays cleaner, but near‑wellbore permeability remains low, fluid entry is restricted, and cold heavy oil wells often fail to reach economic production rates.

Under these conditions, fields pay for protective completions and repeated workovers while still facing low production and poor recovery. The underlying pain point is that the development concept treats all formation sand as a problem, even in reservoirs where sand is actually part of the path to higher productivity.

Using CHOPS to Unlock Reservoir-Side Potential

To address this, some heavy oil projects adopt CHOPS, Cold Heavy Oil Production with Sand, as a production technology. CHOPS deliberately allows controlled sand influx under cold production so that permeability‑damaging fines are removed from the near‑wellbore region and high‑permeability flow channels can develop around the wellbore.

As CHOPS progresses, the near‑wellbore environment changes. Flow paths open, wormhole-like channels extend, and cold heavy oil can move more easily toward the wellbore. In some designs, multilateral flow guidance is also used: additional laterals or branches increase contact area, while controlled sand output helps enlarge and maintain high‑permeability zones along these flow paths.

At this stage, the original sand-control pain point is eased on the reservoir side: wells can flow better, and cold heavy oil projects that were marginal under strict sand exclusion may become viable.

New Lift-Side Problems Under CHOPS-Based Conditions

Once CHOPS is in place, the well conditions that artificial lift must handle are very different from strict sand‑control cold production. Wells operate with cold heavy oil, continuous sand inflow within controlled limits, evolving flow channels, and unstable gas‑liquid behavior near the pump intake.

In many of these wells, lift is provided by progressing cavity pumps with metallic rotors and elastomer stators. These PCPs were selected for heavy oil capability, but their elastomer sealing surfaces were not designed for long-term sand-bearing cold production as defined by CHOPS.

The result is a new pain point on the lifting side:

• accelerated wear of elastomer stators under continuous solids

• loss of sealing and efficiency as surfaces degrade

• torque spikes and sticking events when sand accumulates or inflow shifts

• short, repeated PCP run cycles and rising workover frequency

In other words, CHOPS has addressed the reservoir-side problem, but the artificial lift design has not yet been updated to match CHOPS-driven well conditions.

Oil & Gas All-Metal PCP Work as the Lift-Side Solution

At this point, the development decision is no longer about whether CHOPS is an appropriate production technology. The decision is how to redesign artificial lift so it can work under the cold heavy oil and sand regime created by CHOPS.

Oil & gas all‑metal PCP work addresses this by changing the pump architecture:

• replacing the elastomer stator with a machined metallic stator

• pairing it with a metallic rotor in a precisely engineered cavity

• using conical geometry to control clearance behavior along the pump

• applying surface hardening to improve wear resistance in sand-bearing flow

In CHOPS-based development, this all‑metal structure is better suited to sustained sand-bearing cold production. The pump is built to work in the environment that CHOPS creates, rather than assuming a clean, sand‑free stream.

HXBS implements this all‑metal PCP working concept through the FERROXIS® all‑metal conical PCP at the core of the IntelliCPCP® system. The system is designed specifically for heavy oil and solids-bearing service, making it a relevant second-step solution after CHOPS has been chosen at the reservoir level.

How All-Metal PCP Work Under CHOPS-Driven Conditions

Under CHOPS-driven conditions, oil & gas all‑metal PCP work can be understood through three practical behaviors.

Working against long-term abrasive loading

In CHOPS-based wells, sand is present for long periods. Metallic stators and rotors with hardened surfaces are better suited to this environment than elastomer surfaces. The pump keeps working because its sealing function relies on metal geometry and clearance rather than on an elastomer layer that gradually erodes under sand.

Working across evolving inflow and solids patterns

As CHOPS progresses, flow channels and inflow distribution around the wellbore change. Conical all‑metal PCP geometry allows radial clearance to vary along the pump and, when integrated with appropriate surface control, supports different operating points for different stages of CHOPS development. This helps the pump maintain workable performance as conditions shift instead of quickly moving into failure.

Working as part of an integrated lift system

In practice, the pump must work alongside drive, wellhead, and monitoring components. HXBS wraps the FERROXIS® pump into IntelliCPCP®, a complete rod-driven artificial lift system with DynaRL® surface drive, THERMOLOCK® wellhead, Graspos balancing, RodSavior® wear control, and Synergix® intelligent monitoring. In CHOPS-based wells, this system-level integration allows surface control of speed, torque, and operational sequences that support all‑metal PCP work under the real sand-bearing conditions.

HXBS IntelliCPCP® in a CHOPS-Based Heavy Oil Block

Field pain-point scenario

A shallow unconsolidated heavy oil block initially followed a strict sand-control cold production strategy but saw weak productivity and high operating costs. The operator then adopted CHOPS as a production technology: completions were adjusted to allow controlled sand influx, and cold heavy oil with sand was produced to improve near‑wellbore permeability and flow channels.

CHOPS improved inflow and raised liquid and oil rates, but the PCPs installed before CHOPS were selected for cleaner conditions. Their elastomer stators experienced accelerated wear and sticking events under the new CHOPS-driven cold production with sand, resulting in short run life and frequent pump-related workovers.

HXBS all-metal PCP solution

Without changing the CHOPS production technology, the field upgraded the lifting side to HXBS IntelliCPCP® in selected wells. FERROXIS® all‑metal conical PCPs were installed as the downhole core, paired with DynaRL® surface drives, THERMOLOCK® wellhead assemblies, and Synergix® intelligent monitoring and control.

Under CHOPS-driven conditions, the all‑metal PCP worked by:

• tolerating continuous sand-bearing cold heavy oil better than elastomer stators

• maintaining more stable lifting behavior as sand cuts and inflow patterns changed

• enabling surface-driven adjustments to speed and loading when monitoring indicated higher risk of sticking or instability

Results

After adopting IntelliCPCP®, wells in the pilot block showed reduced pump-sticking events, longer operating periods between interventions, and more stable production under sustained CHOPS conditions. The combination of CHOPS on the reservoir side and all‑metal PCP on the lifting side produced a more balanced development, helping the block achieve the intended benefits of CHOPS with a lifting system capable of working in the environment CHOPS created.

CHOPS Conditions and All-Metal PCP Work Requirements

FAQs

When is it necessary to reconsider PCP architecture after moving a field to CHOPS?

When CHOPS improves inflow but PCP run life drops, sticking and wear become frequent, and pump-related workovers consume a significant share of OPEX, PCP architecture needs to be reconsidered.

How does oil & gas all‑metal PCP work differently from conventional PCP in CHOPS-driven service?

All‑metal PCP work relies on metallic stator‑rotor geometry and hardened surfaces rather than elastomer sealing, making the pump more tolerant of long-term sand-bearing cold production and evolving CHOPS-driven well conditions.

Does adopting CHOPS automatically require all-metal PCP systems?

Not automatically. The need depends on sand volume, well geometry, workover cost, and the observed failure pattern of existing PCPs. All‑metal PCP systems become more attractive when elastomer stators show short run life under CHOPS-based cold heavy oil and sand conditions.

What operating data are most important for managing all-metal PCP work in CHOPS wells?

Torque, speed, pressure trends, and short-term load spikes are especially important, because they indicate sand surges, early sticking trends, and changes in lifting stability that can be addressed through surface control and operating point adjustments.

Why focus on HXBS IntelliCPCP® in this context?

Because IntelliCPCP® combines all‑metal conical PCP design with surface drive, wellhead sealing, balancing, and digital monitoring, forming a coordinated artificial lift system that is better suited to CHOPS-driven cold heavy oil and sand than pump-only upgrades.

Conclusion and Next Steps

In unconsolidated heavy oil reservoirs, strict sand-control cold production can limit productivity and keep projects marginal. CHOPS offers a reservoir-side solution by using cold production with controlled sand output to improve near‑wellbore permeability and open high‑permeability flow channels. Once CHOPS is adopted, however, artificial lift must be redesigned so it can work under the cold heavy oil and sand conditions that CHOPS creates.

Oil & gas all‑metal PCP work, implemented through HXBS FERROXIS® all‑metal conical PCP and the IntelliCPCP® artificial lift system, provides that lifting solution. By aligning pump structure, surface drive, wellhead, and monitoring with CHOPS-driven well conditions, this combination helps cold heavy oil projects cut sticking events, extend run life, and stabilize production under controlled sand production. For teams evaluating CHOPS-based development or upgrading lift systems in existing CHOPS blocks, a practical next step is to review HXBS artificial lift solutions and the IntelliCPCP® all‑metal conical PCP system as the starting point for a CHOPS‑compatible all‑metal PCP configuration.