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Method, system, and composition for producing oil

A technology of composition and polymer, applied in drilling composition, chemical instrument and method, earthwork drilling and other directions, can solve problems such as infeasibility of oil production

Inactive Publication Date: 2015-08-26
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively large storage space required for alkali carbonate storage, the large space required for mixing facilities, and the relatively heavy weight of the alkali carbonate solution, offshore platform constraints on space and weight can make alkali Metal carbonate ASP enhanced oil recovery process is not feasible for oil recovery from seabed formations

Method used

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  • Method, system, and composition for producing oil
  • Method, system, and composition for producing oil
  • Method, system, and composition for producing oil

Examples

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example

[0087] Oil recovery flooding using the method and system according to the invention using the composition according to the invention is carried out. Experiments were conducted to determine the effect of using an ammonia-surfactant-polymer formulation on the recovery of residual oil from a formation. Sand packs were prepared by filling 2 inch diameter glass cylinders with 80 to 120 mesh sand. The sand pack is then placed under vacuum and driven with a synthetic reservoir brine solution. The sand pack was then set up vertically in an oven at 69°C and saturated with low viscosity (1.2 cp at 69°C) crude oil from the top of the sand pack until no more water was produced when further oil was introduced into the sand pack. To simulate oil production from a sand pack waterflood, the sand pack was driven from the bottom of the sand pack with a synthetic brine solution at a rate of 1.0 m / day until no more oil was produced from the sand pack. With these techniques, oil saturation and w...

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Abstract

A method, system, and composition for producing oil from a formation utilizing an oil recovery formulation comprising a surfactant, an ammonia liquid, a polymer, and water are provided.

Description

technical field [0001] The present invention relates to a method for producing oil from a formation, in particular the present invention relates to a method of enhanced oil recovery from a formation. Background technique [0002] In recovering oil from a subterranean formation, it is possible to recover only a portion of the oil in the formation using primary recovery methods that exploit natural formation pressures to produce the oil. A portion of the oil that cannot be produced from the formation using primary recovery methods can be produced by improved or enhanced oil recovery (EOR) methods. [0003] One enhanced oil recovery method uses alkali-surfactant-polymer ("ASP") flooding in oil-bearing formations to increase the amount of oil recovered from the formation. After primary recovery or after secondary recovery waterflood, an aqueous dispersion of alkali, surfactant, and polymer is injected into an oil-bearing formation to increase oil recovery from the formation. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/60C09K8/68
CPCC09K8/588E21B43/16C09K8/584C09K8/60C09K8/68E21B43/12
Inventor J·G·邵思维可G·T·沙因Y·斯威克
Owner SHELL INT RES MAATSCHAPPIJ BV
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