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Title: Tall oil as additive in gas drive hydrocarbon oil recovery

Abstract

A miscible displacement process for recovering oil from a subterranean, oil-containing formation penetrated by at least one injection well and at least one spaced-apart production well and having fluid communication between the injection and the production wells is described comprising: (a) injecting a slug of til oil into the formation through the injection well; (b) injecting a slug of a displacing fluid into the formation through the injection well, the displacing fluid being selected from the group consisting of carbon monoxide, carbon dioxide, methane, nitrogen, air, flue gas, combustion gas and mixtures thereof, the injection of the tall oil lowering the minimum miscibility pressure of the displacing fluid in the formation oil; and (c) recovering the oil through the production well.

Inventors:
Publication Date:
OSTI Identifier:
5075756
Patent Number(s):
US 4736793
Assignee:
Mobil Oil Corp., New York, NY NOV; NOV-88-013277; EDB-88-111329
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 31 Dec 1985
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; DISPLACEMENT FLUIDS; CHEMICAL COMPOSITION; OIL WELLS; GAS INJECTION; MISCIBLE-PHASE DISPLACEMENT; TALL OIL; ADDITIVES; AIR; CARBON DIOXIDE; CARBON MONOXIDE; ENHANCED RECOVERY; FLUE GAS; METHANE; NITROGEN; PETROLEUM; WELL STIMULATION; ALKANES; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; ELEMENTS; ENERGY SOURCES; FLUID INJECTION; FLUIDS; FOSSIL FUELS; FUELS; GASEOUS WASTES; GASES; HYDROCARBONS; NONMETALS; OILS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; RECOVERY; STIMULATION; WASTES; WELLS; 020300* - Petroleum- Drilling & Production

Citation Formats

Djabbarah, N.F.. Tall oil as additive in gas drive hydrocarbon oil recovery. United States: N. p., 1988. Web.
Djabbarah, N.F.. Tall oil as additive in gas drive hydrocarbon oil recovery. United States.
Djabbarah, N.F.. Tue . "Tall oil as additive in gas drive hydrocarbon oil recovery". United States. doi:.
@article{osti_5075756,
title = {Tall oil as additive in gas drive hydrocarbon oil recovery},
author = {Djabbarah, N.F.},
abstractNote = {A miscible displacement process for recovering oil from a subterranean, oil-containing formation penetrated by at least one injection well and at least one spaced-apart production well and having fluid communication between the injection and the production wells is described comprising: (a) injecting a slug of til oil into the formation through the injection well; (b) injecting a slug of a displacing fluid into the formation through the injection well, the displacing fluid being selected from the group consisting of carbon monoxide, carbon dioxide, methane, nitrogen, air, flue gas, combustion gas and mixtures thereof, the injection of the tall oil lowering the minimum miscibility pressure of the displacing fluid in the formation oil; and (c) recovering the oil through the production well.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 12 00:00:00 EDT 1988},
month = {Tue Apr 12 00:00:00 EDT 1988}
}
  • A method of recovering oil using an oil solvent mixture is described. The oil-solvent mixture has the unique quality of changing solubility characteristics between its forward and trailing edges. At the forward edge of the mixture, it is soluble with reservoir oil and is substantially insoluble with the connate water. At the trailing edge of mixture, it attains very high solubility with displacing low-salinity water. The changing solubility characteristics of the oil-solvent mixture are a result of a change in its composition between its leading and trailing edges. The essential components of the oil-solvent mixture are a polar organic compound,more » such as tertiary butyl alcohol, and a tall oil additive, such as tall oil pitch. (8 claims)« less
  • A method is disclosed for the economic recovery of significant additional quantities of oil and gas from a geo-pressured water-drive oil reservoir where oil production has ceased by conventional production techniques and equipment. The method increases the recovery from this type of reservoir, after primary depletion by conventional techniques, by producing the water (and a quantity of oil) from the wells at an abnormally high rate of flow and thereby induces a significant pressure drop in the reservoir remote from the well. This will then induce a significant release of solution gas from the oil through the reservoir. Since themore » residual hydrocarbon saturation in a water-wet porous media is a constant value for a given reservoir rock, a part of the gas released from solution will increase the hydrocarbon saturation and allow a portion of the oil and gas to become mobile and migrate to the producing wells to be recovered.« less
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  • A method for the recovery of hydrocarbons from a subterranean hydrocarbon-bearing reservoir by an enriched gas drive is described wherein lean gas, evolved from the miscible transition zone, is produced ahead of the miscible transition zone and reinjected behind the solvent injection point whereby excessive gas production is utilized and a drive agent miscible with the solvent is provided to displace the reservoir fluids through the reservoir to a production well from which they are produced.
  • This patent describes a process for recovering crude oil from a subterranean formation at a temperature above about 200/sup 0/F and having at least one injection means in fluid communication with at least one production means comprising: (a) injecting into the formation a liquid solution consisting essentially of at least one surfactant and an aqueous medium wherein the surfactant is selected from the group consisting of substantially hydrocarbon sulfonates, substantially hydrocarbon sulfonate derivatives and mixtures thereof and the surfactant is present in an amount at least equal to the critical micelle concentration and in the range of about 0.10% tomore » 1.0%, on a weight basis, of the liquid solution; (b) injection a gas to urge the solution toward the production means, provided that the surfactant is present in an amount effective to reduce the mobility of the mixture of the gas and the solution through the formation; and (c) recovering crude oil from the formation through the production means.« less