Schlumberger

Case Study: Ballistic Time-Delay Fuse Enables Single-Run Tubing-Conveyed Perforating and Cleanup Operations, Ecuador

Consortium Shushufindi increases production 51% from a low-pressure well, with deep and clean perforation tunnels

Challenge: Maximize productivity from a well with low reservoir pressure by achieving deep and clean perforations tunnels in rock, without compromising gun shot density and operating time.

Solution: Complete a single-run operation using a ballistic time delay fuse (BTDF) run between PowerJet Nova 4505 extradeep penetrating shaped charges and the P3 PURE postperforating controlled implosions.

Result:

  • Increased well productivity 51% over plan.
  • Completed the perforating and cleanup operations in a single run.
  • Maintained ideal operating time for job.

Maximize well productivity while minimizing operating time

Consortium Shushufindi in Ecuador wanted to maximize productivity from a well with low reservoir pressure by achieving the deepest and cleanest perforation tunnels possible. To achieve its objective, the operator planned for two separate runs in hole—one for the tubing-conveyed perforating (TCP) operation and another for postperforating controlled implosions to clean the holes. However, with two separate runs in hole, the operator would compromise valuable operating time and costs. It is also very challenging, in wells with low reservoir pressure, to obtain a considerable dynamic underbalance effect without compromising the shot density.

Complete a single-run operation using a ballistic time delay fuse

For this operation, Consortium Shushufindi ran a BTDF positioned between PowerJet Nova 4505 extradeep penetrating shaped charges and P3 PURE postperforating controlled implosions—enabling the perforating and cleanup operation to be completed in a single run.

The BTDF is a slow-burn, accurately timed ballistic transfer that maintains pressure integrity after transfer. The BTDF can be mounted between guns, enabling sequential firing with time delay. This provides the operator enough time to move guns from one target to another and requires only one initiation.

Increased well productivity 51% over plan

The guns loaded with PowerJet Nova charges were first activated to connect to the reservoir with no dynamic underbalance effect. Following a 6-minute delay for the BTDF fuse to actuate, the P3 implosions were activated to clean the recent perforations with 1,000-psi dynamic underbalance effect. After completing this operation, the well was tested at 512 bbl/d, exceeding the operator’s well productivity expectations by 51% over plan.


Download: Ballistic Time-Delay Fuse Enables Single-Run Tubing- Conveyed Perforating and Cleanup Operations, Ecuador (0.37 MB PDF)

Related services and products

 
Request More Information

Single-Run Perforating Operation Increased Well Productivity 51% Over Plan

The P3 implosions were activated to clean the recent perforations tunnels—maximizing the well’s production potential.
PrevNextZoom1 of 1

Deepest Penetrating Shaped Charge in the Industry

PowerJet Nova HNS shaped charge
PowerJet Nova charges deliver up to 50% more formation contact for more effective stimulation treatments and increased drainage contact.
Visit PowerJet Nova Charges page