Description
The hydraulic stage collar with first stage plug is a two-stage cementing tool designed for staged cement placement in highly deviated wells, horizontal wells, Extended-Reach Drilling (ERD wells, and pressure-sensitive formations.
In high-angle wells and horizontal wells, conventional free-fall opening plugs may fail to reach the stage collar because of well deviation, friction, debris, fluid drag, or long lateral sections. This creates serious risks such as failure to open, delayed second-stage cementing, poor cement placement, remedial cementing, and costly rig downtime.
This hydraulic cementing stage collar opens hydraulically through controlled differential pressure from the surface, eliminating dependence on a free-fall opening plug. The first stage plug system supports stage separation and controlled cementing sequence management during two-stage cementing operations.
A major risk during casing running and circulation is premature activation caused by transient surge pressure. This tool is designed with integrated hydraulic surge suppression and an adjustable shear pin system to defend against surge-pressure activation before the planned opening stage.
By separating cement placement into stages, the tool supports Equivalent Circulating Density (ECD management, mitigates lost circulation across weak formations, and improves cement placement control in narrow pressure windows. The anti-rotation PDC drillable design prevents spinning during drill-out and slashes post-cementing drill-out time.
Matched Landing Collars and Baffle Strings are available to ensure reliable plug landing, secure latching performance, and complete stage cementing system compatibility.
What Problem Does It Solve?
| Field Risk | Engineering Solution |
|---|---|
| The free-fall opening plug cannot reach the tool in horizontal wells | Hydraulic opening eliminates dependence on gravity-driven plug travel |
| Failure to open during the stage transition | Differential pressure firing ensures controlled hydraulic activation |
| Cementing sequence uncertainty | First-stage plug system supports staged cementing control |
| Surge pressure causes premature activation | Integrated hydraulic surge suppression defends against transient pressure spikes |
| Weak formations suffer from lost circulation | Two-stage cementing mitigates formation pressure load |
| Excessive ECD in long laterals or ERD wells | Staged cementing supports ECD management |
| The tool spins during drill-out | Anti-rotation PDC drillable design slashes drill-out time |
| Plug landing reliability is required | Matched Landing Collar and Baffle String ensure premium plug-latching performance |
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Hydraulic Stage Collar with First Stage Plug |
| Alternative Names | Hydraulic Cementing Stage Collar / First Stage Plug Stage Collar / Horizontal Well Stage Collar |
| Main Function | Two-Stage Cementing / Staged Cement Placement / ECD Management |
| Plug System | First Stage Plug System |
| Opening Method | Hydraulic Opening / Differential Pressure Firing |
| Opening Plug Requirement | No Free-Fall Opening Plug Required |
| Shear Pin System | Adjustable Shear Pins |
| Opening Pressure | Field-Calibrated According to Cementing Program |
| Premature Opening Control | Surge-Pressure Protection During Casing Running and Circulation |
| Running Compatibility | Standard API Casing Rig Practices / Integrated Hydraulic Surge Suppression |
| Drill-Out Design | Anti-Rotation / PDC Drillable Design |
| Matched Accessories | Landing Collar / Baffle String Available |
| Applicable Wells | Highly Deviated Wells / Horizontal Wells / ERD Wells |
| Recommended Deviation | Greater Than 30° from Vertical / Horizontal Applications |
| Application | Primary Cementing / Extended-Reach Cementing / Lost Circulation Mitigation |
| Material | High Strength Alloy Steel Optional |
| Customization | Available according to casing size, thread type, or Drawing |
Need a custom specification?
Send us your tool model, working condition, quantity, or technical drawing. Our team can help confirm the suitable product configuration and provide a quotation.
Email: info@shangshanpetro.com
Contact: Contact Us for a Quote
Product Features & Benefits
Hydraulic Opening Eliminates Free-Fall Plug Risk
The tool opens hydraulically through differential pressure firing, eliminating dependence on a free-fall opening plug. This prevents plug travel failure in highly deviated wells, horizontal wells, and ERD applications.
First Stage Plug Supports Controlled Cementing Sequence
The first stage plug system supports stage separation and cementing sequence control, allowing operators to manage the transition between cementing stages with greater reliability.
Integrated Hydraulic Surge Suppression
The tool is designed with integrated hydraulic surge suppression to withstand transient pressure fluctuations during casing running and circulation. This supports standard API casing rig practices and prevents premature activation caused by surge pressure.
Adjustable Shear Pins for Field-Calibrated Opening Pressure
The adjustable shear pin system allows the opening pressure to be calibrated according to the cementing program. This ensures predictable activation and supports controlled hydraulic opening at the planned stage.
Mitigates Lost Circulation in Weak Formations
By separating cement placement into stages, the tool mitigates pressure load on weak or fractured formations and prevents severe lost circulation during primary cementing.
Supports ECD Management in Extended-Reach Wells
For long laterals and narrow pressure windows, staged cementing supports Equivalent Circulating Density management and improves cement placement control in pressure-sensitive zones.
Anti-Rotation Design Slashes Drill-Out Time
The anti-rotation structure prevents internal components from spinning during drill-out. Combined with PDC drillable components and no free-fall opening plug requirement, it reduces post-cementing drill-out time.
Matched Landing Collar and Baffle String Available
We supply fully matched Landing Collars and Baffle Strings to ensure reliable plug landing, premium plug-latching performance, and smoother stage cementing operation. This allows customers to source the stage collar and matched plug landing components as a complete cementing solution.
Optimized for Horizontal and High-Deviation Wells
Because hydraulic activation does not rely on gravity-driven plug travel, the tool is suitable for highly deviated wells greater than 30° from vertical and horizontal well sections.
Quality Control
| Inspection Item | Description |
|---|---|
| Material Verification | Confirms material grade, heat number, and traceability when required |
| Dimensional Inspection | Ensures accurate fit of body assembly and internal components |
| Thread Inspection | Checks casing thread accuracy according to project requirements |
| Hydraulic Opening Check | Verifies the hydraulic opening mechanism function |
| First Stage Plug Compatibility Check | Confirms matching with the first-stage plug system |
| Landing Collar / Baffle String Matching | Confirms matched plug landing and latching compatibility when supplied as a system |
| Shear-Pin Calibration Check | Confirms the opening pressure setting according to the design requirement |
| Surge-Pressure Risk Review | Checks the opening pressure configuration against running and circulation conditions |
| Anti-Rotation Function Check | Confirms anti-rotation structure for drill-out support |
| Drill-Out Design Review | Verifies PDC drillable and anti-rotation design requirements |
| Final Inspection | Ensures the hydraulic stage collar is ready for the cementing operation |
FAQ
What is a hydraulic stage collar with a first-stage plug used for?
A hydraulic stage collar with a first-stage plug is used for two-stage cementing operations. It supports staged cement placement and controls the cementing sequence in high-deviation and horizontal wells.
How does this stage collar open?
The tool opens hydraulically through differential pressure firing from the surface. It does not depend on a free-fall opening plug to activate the opening mechanism.
Why is it suitable for horizontal wells?
In horizontal wells and ERD wells, free-fall plugs may not reliably reach the tool because of deviation, friction, debris, fluid drag, or long lateral sections. Hydraulic opening eliminates this plug travel risk.
What is the function of the first-stage plug?
The first stage plug supports stage control during the cementing program and helps manage the transition between cementing operations.
How does the tool prevent premature opening during casing running?
The adjustable shear pin system and integrated hydraulic surge suppression are designed to defend against transient surge-pressure activation during casing running and circulation. This allows the tool to support standard API casing rig practices while maintaining controlled opening pressure for the planned cementing stage.
Can you supply the matched landing collar or baffle string?
Yes. We supply fully matched Landing Collars and Baffle Strings for hydraulic stage collar systems. Matched components ensure reliable plug landing, secure latching performance, and stable cementing sequence control.
Call to Action
If you need a reliable hydraulic stage collar with a first-stage plug, a hydraulic cementing stage collar, or a horizontal well stage collar for two-stage cementing operations, please send us your tool model, working condition, quantity, or drawings.
Our team can provide customized hydraulic stage cementing tool solutions for highly deviated wells, horizontal wells, ERD wells, and pressure-sensitive cementing operations. Matched Landing Collars and Baffle Strings are also available for complete stage cementing systems.
Email: info@shangshanpetro.com
Contact: Contact Us for a Quote
