Motorized Free Point Tool

The Motorized Free Point Tool is an advanced wireline-deployed downhole diagnostic instrument developed to accurately and efficiently determine the free point in drill pipe, tubing, or casing strings - the critical depth at which a tubular string transitions from free-moving to stuck. This electrically driven solution integrates motorized anchoring, real-time data acquisition, and precise sensor measurements to support optimized pipe recovery operations in drilling, workover, and fishing environments.

By delivering high-resolution stuck-point data and actionable insights, the Motorized Free Point Tool enhances decision-making on recovery strategies and minimizes costly rig time and operational risks.

What Is a Free Point and Why It Matters?

In downhole operations, tubular strings can become stuck due to a variety of mechanisms including borehole collapse, differential sticking, formation swelling, tool joint hang-up, or build-up of cuttings. Identifying the free point - where the tubular can still move or rotate-is essential for:

Planning effective fishing or milling operations

Minimizing unnecessary cutting below the stuck interval

Reducing rig hours and overall operational cost

Improving safety and success rates for recovery interventions

Free-point determination is traditionally based on pipe stretch or torque measurements recorded while applying controlled pull or rotational loads from surface. The Motorized Free Point Tool enhances this classic methodology with motorized anchoring and high-precision sensing to deliver clearer, more reliable outcomes.

 

A-One Oil Motorized Free Point Tool

 

A cased-hole logging solutions provider.

1. Motorized Anchoring and Depth Correlation

At the core of the tool is a motorized anchor system that expands downhole to form a secure contact with the inside diameter (ID) of the pipe. The anchors are controlled electronically to position and hold the tool at a precise station for measurement - eliminating reliance on passive springs or magnets that can slip or bind in challenging conditions.

A built-in Casing Collar Locator (CCL) provides accurate depth indexing, enabling measurements to be tightly correlated with the true depth of the stuck section. The combination of motor control and CCL allows precise depth positioning even in horizontal or deviated wells where traditional anchoring is difficult.

2. Multi-Parameter Sensor Measurements

Once anchored, the tool's high-stability sensors monitor axial tension, compression, and torque responses when controlled loads are applied at the surface. These physical responses are converted into electrical AC signals using a temperature-stable Hall sensor, which are transmitted to a surface acquisition system (e.g., Free Point Panel) for logging, visualization, and interpretation.

The tool's ability to detect relative motion changes between free and stuck sections provides a reliable indicator of where the pipe stops deforming under load- the true free point.

The Motorized Free Point Tool is widely utilized in:

◆ Drill Pipe and Collar Stuck Situations

◆ Tubing and Casing Workovers

◆ Horizontal and Deviated Well Situations
Motorized anchoring provides superior stability in wells where gravity-based or passive anchor tools may fail.

◆ High-Pressure High-Temperature (HPHT) Conditions

◆ Pipe Recovery Planning and Execution

◆ FME / Fishing Strategy Optimization

◆ Reliable Performance in harsh downhole environments with robust sensor and motor systems.

◆ High-Resolution Data that support critical operational decisions.

◆ Flexible Anchoring for diverse pipe diameters and well configurations.

◆ Enhanced Operational Efficiency by reducing rig time and avoiding unnecessary milling.

The Motorized Free Point Tool represents a scientifically based, operationally effective solution for pipe recovery diagnostics in drilling and well intervention. Its motorized anchoring system, high-precision Hall sensors, and real-time data processing provide critical insight into stuck vs. free pipe behavior-enabling well-engineers to plan and execute recovery operations confidently and cost-effectively.

If you would like to download the datasheet, request a quote, or discuss custom configurations for your well profile, contact our technical sales team today.

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