TOP 3 REASONS TO CONSIDER CO2 HUFF’N’PUFF RATHER THAN ABANDONING A HEAVY OIL WELL

Consider a CO2 Huff’n’Puff Rather than Abandoning a Heavy Oil Well

• Low primary recoveries (<10% of OOIP) in conventional heavy oil and CHOPS wells;

• Optimize the potential of existing assets at much lower capital cost than drilling new wells;

• Sequester CO2 while enhancing well productivity and oil recoveries.

Cyclic Solvent Injection (CSI) with CO2

Economic single-well enhance oil recovery alternative.

Candidate Wells

Depleted reservoirs

• Wells with good initial production

• Wells high residual hydrocarbon saturation

• Light oil and heavy oil

Lenticular or severely faulted reservoirs

Wells with suspected water-blocks or fracturing damage

Rock type and quality

• Sandstones

• Carbonates

• Shales

• Dolomites

Technical Benefits

Improves Hydrocarbon recovery by 3-8%.

Sources SPE 157823 / SPE 169575