IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0568680
(1984-01-06)
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발명자
/ 주소 |
- Davis, Jr., Lorne A.
- Haskin, Helen K.
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출원인 / 주소 |
|
대리인 / 주소 |
Kulason, Robert A.Gillespie, Ronald G.
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인용정보 |
피인용 횟수 :
2 인용 특허 :
2 |
초록
▼
A method of two dimensional chemical flood testing includes evacuating a porous medium contained in a test cell. The porous medium in the test cell is irradiated with a beam of microwave energy at a plurality of predetermined locations on said test cell. The microwave energy that has passed through
A method of two dimensional chemical flood testing includes evacuating a porous medium contained in a test cell. The porous medium in the test cell is irradiated with a beam of microwave energy at a plurality of predetermined locations on said test cell. The microwave energy that has passed through the porous medium at each location is detected at the location. The porous medium in the test cell is filled with brine. The irradiating and detecting steps are repeated, the porous medium is then flooded with crude oil, or a substitute, and again the irradiating and detecting steps are repeated. The porous medium is flooded with brine and again the irradiating and detecting steps are repeated. A calibration curve for each location is derived from the detected microwave energy at the location from the prior irradiating and detecting steps. The chemical flood system is tested by flooding the porous medium with the chemical flood system at a predetermined flow rate during which time the irradiating and detecting steps are repeated periodically so that the test cell is periodically scanned in two directions by microwave energy. A two dimensional pattern of the chemical flood is derived for each scan in accordance with the detected microwave energy at each location for the scan and the calibration curves.
대표청구항
▼
1. A method of two dimensional chemical flood testing comprising: evacuating a test cell having an entry port and an exit port and containing a porous medium, said test cell having side dimensions which are substantially greater than a thickness dimension of said test cell; providing different l
1. A method of two dimensional chemical flood testing comprising: evacuating a test cell having an entry port and an exit port and containing a porous medium, said test cell having side dimensions which are substantially greater than a thickness dimension of said test cell; providing different liquids to said entry port in a predetermined sequence; receiving the different liquids from said exit port; irradiating the porous medium with a beam of microwave energy using a microwave transmitter at a plurality of predetermined locations of said test cell defined by a two axis coordinate system, said irradiating step being conducted upon evacuation of said test cell and repeated for each type of liquid while it is in said test cell, detecting at each location, with a microwave receiver, the microwave energy that has passed through the porous medium at that location, deriving and storing a calibration curve for each predetermined location, and providing a graphical representation of the liquid content of said porous medium in said test cell in accordance with detected microwave energies, the stored calibration curves, and the predetermined locations on the test cell; said irradiating and detecting step includes: holding said test cell in a fixed position with a first mounting means, mounting said transmitter means and said receiver means on a second mounting means and on a third mounting means, respectively, in a manner so that they are aligned with each other and having sufficient space between them so that said test cell may be interposed between said transmitter means and said receiver means, moving said second and third mounting means in unison along an X axis with a first moving means, mounting said first moving means on fourth and fifth mounting means, moving said fourth and fifth mounting means along a Y axis, which is perpendicular to the X axis, with a second moving means, and controlling the movement of the second and third mounting means and the fourth and fifth mounting means so that the transmitter means and the receiver means will stop temporarily at predetermined locations on the test cell for the microwave irradiation through the porous medium at that location; and said liquid providing step which includes: containing liquids to be provided crude oil, or a substitute, a surfactant, a polymer and brine in an equal number of containers, pumping a non-corrosive liquid with pump means, controlling the liquid provided by said pump means to be provided to either the crude oil or substitute container, the surfactant container, the polymer container, or the brine container so as to displace crude oil from the crude oil container, surfactant from the surfactant container, polymer from the polymer container, or brine from the brine container with a valve means, directing the brine, the polymer, the surfactant, or the crude oil or its substitute, into said test cell with a second valve means acting in cooperation with said first valve means, said liquid receiving step includes: providing the liquid flowing from the sample cell to an appropriate receptacle means of a plurality of receptacle means with a third valve means acting in cooperation with said first and second valve means. 2. A test method as described in claim 1 in which the chemical flood system includes a slug of surfactant, a brine drive liquid, and a slug of polymer separating said surfactant and drive liquid. 3. A test method as described in claim 1 in which the chemical flood system includes a slug of surfactant, and a polymer drive liquid. 4. A test method as described in claim 1 in which the chemical flood system includes a slug of surfactant, and a brine liquid drive. 5. A test method as described in claim 1 in which the chemical flood system includes a slug of polymer, and a brine liquid drive. 6. A test method as described in claim 1 in which the microwave energy is provided at a frequency within the X-band of microwave frequencies. 7. A test method as described in claim 1 in which the microwave energy is provided at a frequency within the K-band of microwave frequencies. 8. A test method as described in claim 2 in which the porous medium is fabricated. 9. A test method as described in claim 3 in which the porous medium is fabricated. 10. A test method as described in claim 4 in which the porous medium is fabricated. 11. A test method as described in claim 5 in which the porous medium is fabricated. 12. A test method as described in claim 6 in which the porous medium is fabricated. 13. A test method as described in claim 7 in which the porous medium is fabricated.
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