Oil and gas field chemicals

Details Oil and gas field chemicals Oil and gas field chemicals

1996-01-17

1997-11-25

Schoeppel, Roger J.

Wells

Processes

Distinct, separate injection and producing wells

166279, E21B 4316

Patent

active

056901747

ABSTRACT:
This invention relates to a process for increasing the effectiveness of production chemicals by reducing the number of squeezing and shut-in operations needed to increase the production rate from an oil well. The process includes injecting into an oil-bearing rock formation a water-miscible formulation including as components: (a) a water-miscible surfactant which is an alkyltriglycol ether and (b) at least one water-miscible oil field or gas field production chemical, said components of the formulation being introduced either as a pre-formed single composition, or simultaneously in parallel or sequentially in either order into the rock formation via the production well.

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patent: 4184549 (1980-01-01), Schievelbein
patent: 4192382 (1980-03-01), Schievelbein
patent: 4194563 (1980-03-01), Schievelbein
patent: 4457373 (1984-07-01), Balzer et al.
patent: 5002126 (1991-03-01), Carlberg

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