Definition - What does Cold Production mean?
Cold Production, also known as Cold Heavy Oil Production with Sand (CHOPS), is a process which involves the use of sand to extract heavy crude oil. In this nonthermal primary production process, the heavy crude oil is produced because the sand enhances the productivity of the well. A necessary sand influx is maintained during the production of oil from well.
Petropedia explains Cold Production
Cold production or Cold Heavy Oil Production with Sand (CHOPS) is a quasi primary or nonthermal primary production approach for heavy crude oil. The factors on which CHOPS depends are as follows:
- In a new well, there is a large sand influx ranging from 10% to 40% of the volume of liquids produced.
- After few months of production in the same well, a steady state decay of sand rate is observed because of oil viscosity and the range reaches to 0.5% to 10%.
- The rate of crude oil production increases for several months and slowly declines.
- Now in CHOPS, production of heavy crude oil is done along with gas production where gas to oil ratio remains constant for years of production.
- Sand influx and oil production rates fluctuate around the mean value.