【每日一词】【4.28】之gas drive——摘自斯伦贝谢网站的Oilfield Glossary [复制链接]

                                                                                                                                            gas drive 气驱
A primary recovery mechanism for oil wells containing dissolved and free gas, whereby the energy of the expanding gas is used to drive the oil from the reservoir formation into the wellbore.

大家可以从驱替机理的范围如，溶解气驱，水驱等方面跟帖

【每日一词】【4.28】之驱替——摘自斯伦贝谢网站的Oilfield Glossary


alkaline flooding


An enhanced oil recovery technique in which an alkaline chemical such as sodium hydroxide, sodium orthosilicate or sodium carbonate is injected during polymer flooding or waterflooding operations. The alkaline chemical reacts with certain types of oils, forming surfactants inside the reservoir. Eventually, the surfactants reduce the interfacial tension between oil and water and trigger an increase in oil production.

Alkaline flooding is not recommended for carbonate reservoirs because of the abundance of calcium: the mixture between the alkaline chemical and the calcium ions can produce hydroxide precipitation that may damage the formation.

Alkaline flooding is also known as caustic flooding.

【每日一词】【4.28】之驱替——摘自斯伦贝谢网站的Oilfield Glossary

solution gas drive    溶解气驱
A type of reservoir-drive system in which the energy for the transport and production of reservoir fluids is derived from the gas dissolved in the fluid. As reservoir fluids enter the wellbore, changing pressure conditions cause the gas to break from solution to create a commingled flow of gas and liquid that aids production.

【每日一词】【4.28】之驱替——摘自斯伦贝谢网站的Oilfield Glossary
waterdrive
1 well completion
A reservoir-drive mechanism whereby the oil is driven through the reservoir by an active aquifer. As the reservoir depletes, the water moving in from the aquifer below displaces the oil until the aquifer energy is expended or the well eventually produces too much water to be viable.
2 Production Enhancement
A primary recovery mechanism in which the pressure from free water is sufficient to move hydrocarbons out of the reservoir, into the wellbore and up to surface.

Waterdrive reservoirs can have bottomwater drive or edgewater drive. In a bottomwater-drive reservoir, water is located beneath the oil accumulation, while in an edgewater-drive reservoir, water is located only on the edges of the reservoir.