Immediate Open Hole Toe Valve
“Quick Start” Design
Product Overview
The Immediate Open Hole Toe Valve is a hydraulically actuated toe initiation solution engineered to eliminate TCP-related risks while enabling a clean, reliable first-stage injection path. Designed for pressure integrity, it allows multiple low-pressure tests prior to activation and provides a large, debris-tolerant flow area for dependable frac initiation.
Key Features
- Multiple low-pressure casing tests allowed prior to opening
- Opens upward and is held open by snap ring, hydraulic pressure, and Morse taper
- Adjustable activation pressure with rupture discs accurate to ±2%
- Large-area flow ports reduce debris accumulation and plugging risks
- Optional ball seat enables DFIT prior to stimulation
Applications & Drilling Scenarios
- Multistage hydraulic fracturing programs
- Horizontal shale and tight reservoir developments
- Wells requiring TCP-free toe initiation
- Wells where high pressure integrity prior to first-stage frac is essential
Advantages
- Eliminates TCP and wireline operations in the toe
- Allows pressure tests below activation without jeopardizing integrity
- Configurable for various casing programs and stimulation designs
- Large flow-area design enhances reliability in debris-prone environments
Compatibility
- Standard cemented and open-hole liner systems
- Completions requiring DFIT capability (optional ball seat)
- Multistage plug-and-perf or ball-drop systems
Certifications & Quality Assurance
Manufactured to Frontier Oil Tools’ quality program with API-compliant materials and traceability. (Additional certifications available on request.)
Technical Specifications
Operational Parameters
| Parameter | Value |
|---|---|
| Activation Pressure | Adjustable |
| Pressure Testing | Multiple low-pressure tests allowed |
| Opening Mechanism | Hydraulic actuation (upward), snap ring, Morse taper |
| Optional Features | Ball seat for DFIT |
| Absolute Pressure Rating | 22,000 psi |
Mechanical Specifications
| Liner Size | OD (in) | ID (in) | Length (in) | Flow Port Area (in²) | Rupture Disc Increments | Threads | Material | Tensile (lbs) |
|---|---|---|---|---|---|---|---|---|
| 3.5" | 4.250 | 2.450 | 35.3 | 45664 | 500 psi | As requested | 110 ksi | 183 |
| 4.5" | 5.875 | 3.755 | 37.8 | 45826 | 500 psi | As requested | 140 ksi | 248,75 |
| 4.5" | 5.500 | 3.250 | 37.5 | 45732 | 500 psi | As requested | 125 ksi | 285 |
| 5.5" | 7.250 | 4.015 | 38.4 | 45831 | 500 psi | As requested | 140 ksi | 459,375 |
| 5.5" | 7.250 | 4.776 | 38.4 | 45831 | 500 psi | As requested | 140 ksi | 459,375 |
| 5.5" | 6.875 | 4.270 | 38.4 | 45831 | 500 psi | As requested | 140 ksi | 387,5 |
Survivability / Limits
| Parameter | Value |
|---|---|
| Absolute Pressure Limit | 22,000 psi |
| Accuracy of Rupture Disc | ±2% |
| Flow Assurance | Large-area injection ports designed to reduce plugging |