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Opportunity

Mature Fields

Opportunity
Specific Challenge

Maximize reservior contact in 5,226-foot (1,593-meter) lateral well

REGION - AFRICA

Northern Africa

Challenge

  • Provide a reliable slickline-deployed V0-grade high-expansion retrievable bridge plug (RBP) with a capability to pass tight restrictions and to set within larger tubing IDs 
  • Provide shut-in pressure integrity to enable gauge data recordings

Solution

  • HERO™ high-expansion V0-grade RBP: 
    • Helps ensure reliable slickline deployment and retrievability 
    • Provides shut-in pressure integrity

Result

  • Achieved repeatable success in setting and retrieving the HERO RBP 
  • Enabled Sonatrach to use a single HERO bridge plug in multiple wells, due to the plug’s redressability 
  • Provided repeatable pressure integrity performance to enable gauge data recordings 
  • Saved Sonatrach 38 total days of pressure integrity over the course of three jobs, and realized retrievable success on each job

Overview

Sonatrach needed a high-expansion retrievable bridge plug (RBP) to provide reliable performance for well shut-in purposes. The shut-in would allow well data to be collected from as close to the formation as possible; however, tubing restrictions prevented access to the lower-most casing depth. 

Challenge 

Sonatrach required a low-cost, slickline-deployed retrievable mechanical barrier. The wells contained landing nipple restrictions above the target setting depth. A mechanical barrier was needed to provide pressure integrity for well shut-ins with up to 18 days duration down hole. Due to remote conditions, the RBP was also required to have a field-friendly redress for multi-well use. 

In this oil-producing land-well in northern Africa, the RBP had a tight restriction to pass through before setting within a larger tubing size and providing pressure integrity to enable gauge data recordings. 

Solution 

Standard RBP or packer options are typically suited to 3.688-inch restrictions, making them unable to pass through the 3.452-inch restriction and set within the required tubing size. 

The HERO™ high-expansion RBP provides the capability to pass a 3.452-inch restriction and to set within 4½-inch, 13.5-lb/ft tubing. The HERO RBP has been qualified as an API 11D1/ISO 14310 (grades V3 and V0) mechanical barrier.

3

post-redress occasions

3

day operational turnaround

38

days of pressure integrity

Result 

A single HERO RBP was utilized on three separate post-redress occasions at this location, with sustained performance levels on each installation and retrieval operation. Over these three jobs, Sonatrach achieved 38 total days of pressure integrity, along with retrievable success. This quick three-day operational turnaround saved Sonatrach valuable standby time and costs.

Contributing to the success of the high-expansion HERO bridge plug is its ability to pass through tight restrictions, and then to set at target depth and provide pressure integrity in larger tubing IDs. In addition to being slickline deployable, this RBP offers repeated and reliable performance, and is debris tolerant for ease of retrievability after multiple days down hole.