Production from new drainage points from subsea wells, by means of sidetracking through existing completions into new reservoirs, has traditionally been time consuming and costly. The development of a Through Tubing Rotary Drilling (TTRD) technology provides a more cost effective method to increase the production from subsea wells, compared to drilling and completing new wells.
TTRD technology enables:
- Safer operation (no additional tree required and less tubular handling)
- No pulling of the tubing or subsea tree saving time and cost
- Deeper kick off point (saves drilling and completion costs)
TTRD benefits:
- Lower cost than conventional drilling operation
- Increases income from each well
- Extends the life of the well
- May enable production from marginal fields
- Maximizes production from mature fields
- Decreases operational time (typical operation 3 weeks 1000 – 1500m horizontal reservoir drilling)