Carbon dioxide recycle stream processing with ethylene glycol dehydrating in an enhanced oil recovery process

An enhanced oil recovery (EOR) process, comprising:

• receiving a wet carbon dioxide recycle stream from a recovery well, wherein the wet carbon dioxide recycle stream comprises water, carbon dioxide, methane, ethane, and C3+ hydrocarbons;
• dehydrating, by a glycol unit, the wet carbon dioxide recycle stream using ethylene glycol to produce a dry carbon dioxide recycle stream and a water stream, wherein the glycol unit comprises an absorber and is configured to use the ethylene glycol as a dehydration solvent to separate the water from the wet carbon dioxide recycle stream, wherein the dry carbon dioxide recycle stream comprises the carbon dioxide, the methane, the ethane, and the C3+ hydrocarbons, wherein a mole fraction of the carbon dioxide in the dry carbon dioxide recycle stream from the glycol unit is greater than mole fractions of the methane, the ethane, and the C3+ hydrocarbons in the dry carbon dioxide recycle stream from the glycol unit, and wherein the water stream comprises the water;
• separating the dry carbon dioxide recycle stream into a carbon dioxide reinjection stream and a natural gas liquids stream, wherein the carbon dioxide reinjection stream comprises the carbon dioxide, the methane, and the ethane, and wherein the natural gas liquids stream comprises the C3+ hydrocarbons;
• transferring the carbon dioxide reinjection stream to a reinjection well.

A set of process equipment for use in an enhanced oil recovery (EOR) process, comprising:

• a glycol unit configured to receive a wet carbon dioxide recycle stream from a recovery well and dehydrate the wet carbon dioxide recycle stream using ethylene glycol to produce a dry carbon dioxide recycle stream and a water stream, wherein the glycol unit comprises an absorber and is configured to use the ethylene glycol as a dehydration solvent to separate water from the wet carbon dioxide recycle stream, wherein the wet carbon dioxide recycle stream comprises water, carbon dioxide, methane, ethane, and C3+ hydrocarbons, wherein the dry carbon dioxide recycle stream comprises the carbon dioxide, the methane, the ethane, and the C3+ hydrocarbons, wherein a mole fraction of the carbon dioxide in the dry carbon dioxide recycle stream from the glycol unit is greater than mole fractions of the methane, the ethane, and the C3+ hydrocarbons in the dry carbon dioxide recycle stream from the glycol unit, and wherein the water stream comprises the water;
• and
• a natural gas liquids recovery column configured to receive the dry carbon dioxide recycle stream from the glycol unit and configured to separate the dry carbon dioxide recycle stream into a carbon dioxide reinjection stream and a natural gas liquids stream, wherein the carbon dioxide reinjection stream comprises the carbon dioxide, the methane, and the ethane, and wherein the natural gas liquids stream comprises the C3+ hydrocarbons.