Matrix acidization had limited and short-lived effects on this mature well. We delivered a 96% production increase, with a 40% average uplift sustained for a year.
96% immediate oil production uplift, with lasting effect
Matrix acidization had limited and short-lived effects on this mature well. We delivered a 96% production increase, with a 40% average uplift sustained for a year.
Challenge
Their wells were originally hydraulically fractured, and subsequently had matrix acidizing done on them, but this generally had minimal success and was short-lived. The client required the additional remediation to be cost- effective and to be done efficiently together with re-perforating and acidizing.
Well Conditions
- Depth: 2100 m (7000 ft)
- Cardium Sandstone
- Light oil (44 API)
Solution
Improve connectivity to the reservoir using electro-hydraulic stimulation technology combined with re-perforation and matrix acidization
- Three wells were treated with BLUESPARK® to improve production
- The wells were re-perforated, then stimulated with BLUESPARK® and lastly were acidized
- An average of 8 m (26 ft) of perforated interval per well was treated with our wireline conveyed tool
- Production rates and fluid levels were both monitored for comparison to pretreatment values
Outcome
- The client data showed an immediate increase of 96% in the 3 wells combined.
- Public data showed an increase from 53 to 78 BOPD in a 3-month comparison (47% increase).
- Sustained production over one year averaged 74 BOPD, a 40% increase over the 3-month period prior to the workovers.