The invention relates to a guide and injection integrated structure, an
electric field enhanced oil extraction method and a deployment well pattern. The guide and injection integrated structure comprises a shell, an
electrode device and a water injection
pipe. Holes are formed in the shell wall of the shell to serve as injection points for water to flow into a target oil layer; the
electrode device at least comprises an
electrode and is arranged in the shell; the water injection
pipe penetrates into the shell, and a water injection hole is formed in the
pipe wall of the water injection pipe and right faces the
injection point. The guide and injection integrated structure can realize simultaneous conduction and water injection of an underground electrode, an electrochemical effect and
Joule heat are applied to an underground oil reservoir, and a stratum direct-
current electric field is established to influence a rock medium of saturated fluid, so that the electrochemical effect is generated in a stratum; and meanwhile, the direct-
current electric field can generate
Coulomb force and
electric field force which are far greater than
differential pressure force in the immediate vicinity of a
wellbore, so that the effects of electroosmotic flow,
electrowetting,
Joule heat,
electromigration and the like are generated in a stratum, and the aims of improving the
physical property of a reservoir, changing the property of fluid and improving the
recovery ratio of the oil reservoir are achieved.