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The [[Single_well_chemical_tracer_test|single well chemical tracer (SWCT) test]] can be used to evaluate an Improved oil recovery (IOR) process quickly and inexpensively. The one-spot procedure takes advantage of the nondestructive nature of the SWCT method. | The [[Single_well_chemical_tracer_test|single well chemical tracer (SWCT) test]] can be used to evaluate an Improved oil recovery (IOR) process quickly and inexpensively. The one-spot procedure takes advantage of the nondestructive nature of the SWCT method. | ||
== Testing reduction in residual oil saturation == | ==Testing reduction in residual oil saturation== | ||
The single-well (one-spot) pilot is carried out in three steps. First, ''S''<sub>''or''</sub> for the target interval is measured (see [[Residual_oil_evaluation_using_single_well_chemical_tracer_test|Residual oil evaluation using single well chemical tracer test]]. Then an appropriate volume of the IOR fluid is injected into the test interval and pushed away from the well with water. Finally, the SWCT test is repeated within the treated region. Typically, the entire process is completed in a few weeks, as compared to the much longer duration of pilot programs, even small-patterned ones. | The single-well (one-spot) pilot is carried out in three steps. First, ''S''<sub>''or''</sub> for the target interval is measured (see [[Residual_oil_evaluation_using_single_well_chemical_tracer_test|Residual oil evaluation using single well chemical tracer test]]. Then an appropriate volume of the IOR fluid is injected into the test interval and pushed away from the well with water. Finally, the SWCT test is repeated within the treated region. Typically, the entire process is completed in a few weeks, as compared to the much longer duration of pilot programs, even small-patterned ones. | ||
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In every case, the process was evaluated successfully using the [[Single_well_chemical_tracer_test|SWCT]] test. In most of these sequences, the IOR fluid injection and push steps were carried out by the [[Single_well_chemical_tracer_test|SWCT]] test field group as a part of the field test program. A typical single-well pilot evaluation of an IOR process requires four to six weeks to complete. | In every case, the process was evaluated successfully using the [[Single_well_chemical_tracer_test|SWCT]] test. In most of these sequences, the IOR fluid injection and push steps were carried out by the [[Single_well_chemical_tracer_test|SWCT]] test field group as a part of the field test program. A typical single-well pilot evaluation of an IOR process requires four to six weeks to complete. | ||
== | {{NumBlk|2=2-2=0|3=1}} | ||
=== In-situ evaluation of hydrocarbon-miscible IOR === | ==Case study== | ||
===In-situ evaluation of hydrocarbon-miscible IOR=== | |||
A series of SWCT tests was performed in the Aurora Field on the Alaska North Slope,<ref name="r5">Carlisle, C.T. et al. 2002. Aurora Single Well Tracer Test (SWTT) Results. Poster presented at the SPE Western North American Region/Pacific Section AAPG Joint Meeting, Anchorage, 20–22 May.</ref> US, to provide an in-situ formation evaluation and to evaluate hydrocarbon-miscible IOR. The target well produced 100% oil. | A series of SWCT tests was performed in the Aurora Field on the Alaska North Slope,<ref name="r5">Carlisle, C.T. et al. 2002. Aurora Single Well Tracer Test (SWTT) Results. Poster presented at the SPE Western North American Region/Pacific Section AAPG Joint Meeting, Anchorage, 20–22 May.</ref> US, to provide an in-situ formation evaluation and to evaluate hydrocarbon-miscible IOR. The target well produced 100% oil. | ||
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<gallery widths="300px" heights="200px"> | <gallery widths="300px" heights="200px"> | ||
File: | File:Vol5 Page 0642 Image 0001.png|'''Fig. 1 – One-spot pilot evaluation of hydrocarbon-miscible IOR before IOR bank.''' | ||
</gallery> | </gallery> | ||
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<gallery widths="300px" heights="200px"> | <gallery widths="300px" heights="200px"> | ||
File: | File:Vol5 Page 0643 Image 0001.png|'''Fig. 2 – One-spot pilot evaluation of hydrocarbon-miscible IOR after IOR bank.''' | ||
</gallery> | </gallery> | ||
== References == | ==References== | ||
<references /> | <references /> | ||
== Noteworthy papers in OnePetro == | ==Noteworthy papers in OnePetro== | ||
Use this section to list papers in OnePetro that a reader who wants to learn more should definitely read | Use this section to list papers in OnePetro that a reader who wants to learn more should definitely read | ||
== External links == | ==External links== | ||
Use this section to provide links to relevant material on websites other than PetroWiki and OnePetro | Use this section to provide links to relevant material on websites other than PetroWiki and OnePetro | ||
== See also == | ==See also== | ||
[[Single_well_chemical_tracer_test|Single well chemical tracer test]] | [[Single_well_chemical_tracer_test|Single well chemical tracer test]] | ||
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==Category== | ==Category== | ||
[[Category:5.6.5 Tracer test analysis]] [[Category:5.3.4 Reduction of residual oil saturation]] [[Category:YR]] | [[Category:5.6.5 Tracer test analysis]] | ||
[[Category:5.3.4 Reduction of residual oil saturation]] | |||
[[Category:YR]] | |||
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