Description
Product Description
The hydraulic stage collar with opening plug is a two-stage cementing tool used to control staged cement placement in highly deviated wells, horizontal wells, and pressure-sensitive formations. It allows cement slurry to be placed in separate stages, reducing pressure load on weak zones and mitigating lost circulation during casing cementing operations.
In high-angle wells and horizontal wells, stage collar activation must be predictable. If the tool opens too early, fails to open at the planned time, or cannot maintain flow control during second-stage cementing, the job may result in poor cement placement, remedial cementing, and costly rig downtime.
This hydraulic cementing stage collar is designed for hydraulic opening and controlled stage activation. It can be used in applications where an opening plug is part of the cementing program, while the hydraulic opening mechanism provides reliable activation under designed pressure conditions.
The adjustable shear pin system allows the operator to calibrate the opening pressure according to field requirements. This supports surge-pressure protection during casing running and circulation, helping prevent premature opening before the tool reaches the planned setting depth.
By dividing cementing into stages, the tool supports Equivalent Circulating Density (ECD management, mitigates lost circulation across weak formations, and improves cement placement control in pressure-sensitive zones. The anti-rotation design improves PDC drill-out efficiency after cementing and reduces post-job rig time.
What Problem Does It Solve?
| Field Risk | Engineering Solution |
|---|---|
| Weak formations suffer from lost circulation | Two-stage cementing mitigates pressure load on fragile zones |
| Excessive ECD during primary cementing | Staged cementing supports Equivalent Circulating Density management |
| Failure to open during the second-stage cementing | The hydraulic opening and opening plug program support controlled activation |
| Surge pressure causes premature opening | Adjustable shear pins defend against surge-pressure activation |
| High-deviation wells limit conventional operation | Hydraulic opening improves activation reliability in high-angle wells |
| The tool spins during drill-out | Anti-rotation design slashes PDC drill-out time |
| Field opening pressure varies by well condition | Shear pin calibration allows onsite pressure adjustment |
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Hydraulic Stage Collar with Opening Plug |
| Alternative Names | Hydraulic Cementing Stage Collar / Opening Plug Stage Collar / Horizontal Well Stage Collar |
| Main Function | Two-Stage Cementing / Staged Cement Placement / ECD Management |
| Opening Method | Hydraulic Opening / Differential Pressure Activation |
| Opening Plug | Opening Plug Available According to Cementing Program |
| Shear Pin System | Adjustable Shear Pins |
| Opening Pressure | Field-Calibrated According to Well Requirements |
| Premature Opening Control | Surge-Pressure Protection During Casing Running and Circulation |
| Drill-Out Design | Anti-Rotation / PDC Drillable Design |
| Applicable Wells | Highly Deviated Wells / Horizontal Wells / ERD Wells |
| Recommended Deviation | Greater Than 30° from Vertical / Horizontal Applications |
| Running Requirement | Slow and Smooth Casing Running to Prevent Premature Opening |
| 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 for Controlled Stage Activation
The tool opens hydraulically under designed pressure conditions, providing controlled activation for second-stage cementing operations.
Opening Plug Program Compatibility
This stage collar can be used with an opening plug program when required by the cementing design, supporting planned stage activation and operational confirmation.
Adjustable Shear Pins Prevent Premature Opening
The adjustable shear pin system allows the opening pressure to be calibrated according to the cementing program. This defends against surge-pressure activation while running casing or circulating before the planned opening stage.
Mitigates Lost Circulation in Weak Formations
By separating cement placement into stages, the tool mitigates pressure load on weak or fractured formations and reduces the risk of lost circulation during primary cementing.
Supports ECD Management in Horizontal Wells
For long laterals, high-deviation wells, and narrow pressure windows, staged cementing supports Equivalent Circulating Density management and improves cement placement control.
Anti-Rotation Design Slashes Drill-Out Time
The anti-rotation structure prevents internal components from spinning during drill-out. Combined with PDC drillable components, it reduces post-cementing drill-out time.
Optimized for High-Deviation and Horizontal Wells
The tool is suitable for highly deviated wells greater than 30° from vertical and horizontal well sections where predictable stage activation is required.
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 hydraulic opening mechanism function |
| Opening Plug Compatibility Check | Confirms matching with opening plug program when required |
| Shear-Pin Calibration Check | Confirms opening pressure setting according to design requirement |
| Surge-Pressure Risk Review | Checks 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 cementing operation |
FAQ
What is a hydraulic stage collar with opening plug used for?
A hydraulic stage collar with opening plug is used for two-stage cementing operations. It allows cement to be placed in separate stages to mitigate lost circulation and manage ECD in high-deviation or horizontal wells.
How does this stage collar open?
The tool opens hydraulically under designed pressure conditions. An opening plug can be used according to the cementing program for planned stage activation.
Why are adjustable shear pins important?
Adjustable shear pins allow operators to calibrate opening pressure onsite. This helps prevent premature opening caused by surge pressure during casing running or circulation.
How does the tool prevent premature opening?
Opening pressure can be set according to the cementing program, while slow and smooth casing running reduces surge pressure. This defends against premature activation before the planned stage.
What is the difference between opening plug and closing plug stage collars?
An opening plug stage collar focuses on planned opening activation, while a closing plug stage collar uses a closing plug to shut off stage ports after second-stage cementing.
Call to Action
If you need a reliable hydraulic stage collar with opening plug, hydraulic cementing stage collar, or opening plug 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.
Email: info@shangshanpetro.com
Contact: Contact Us for a Quote
