Multi-pulse Stimulation Perforator
Description
Multi-pulse stimulation perforator is a collection of compound perforating and high energy gas fracturing. High temperature and high pressure gas are produced in sequence during perforation, which makes the perforation
channel extended, expanded and washed repeatedly.
To new well, this technology will help increase production; to old well with heavy pollution, this technology will help reduce near wellbore damage, improve near wellbore permeability
and enhance well completion, so as to improve production.
Features and Benefits
1. Optimizing perforator design.
2. Delay ignition technology.
3. Controlling burning rate technology.
4. Multi-powder sub-packaging technology.
Structure
Firing Head
Perforating Charge
Effect-increasing powder cake
Pre-Powder Cartridge
Septum Ignitor
Fracturing Powder(Rapid)
Seive Tube
Fracturing powder(Slow)
Tail Seive Tube
Technical Specification
| Item | Technical Specification |
| Pressure Pulse crest | >=3 |
| Temperature Resistance | 160oC/48h or 140oC/48h |
| Pressure Resistance | 80Mpa/11600psi |
| Baffle Ignition Delay Period | >=25 Seconds |
| Crest Pressure | 50-100Mpa/7250-14500psi |
| Crest Quantity | 4-8 |
| Fracture Length | >=3m/9.84ft |
Prefixing Powder Cake is a new kind of powder cake which is installed in front mouth of perforating charge. The cake's diameter is the same as the perforating charge, so the cake can be tightly installed on the carrier along the edge of the charge. The cake is ring shaped and the inner diameter is 20mm so that it will not influence jet flow.
A compacted zone is formed after perforating and permeability of formation declines. Prefixing powder cake is used to relieve the compacted zone, lowers damage and largely improve production.
The stimulation cake is installed between shaped charges. It is ignited by high tempereature, high pressure gas and high temperature debris produced by detonating cord and perforating charges.
It is good for improving production and reducing near wellbore damage.
