FIELD: physics.
SUBSTANCE: apparatus has a transmitter which generates current pulses in water (2) through a submerged vertical or horizontal transmitting cable (7a, 7b), which ends with transmitting electrodes (8), and a recording subsystem (9) connected to electrodes (11) on vertical or horizontal receiving cables (10a, 10b). The transmitter generates a special sequence of electric current pulses having an abrupt ending, and the electric field in the water is measured in the periods between these pulses. Each line passing between receiving electrodes lies in the same vertical plane as the end of the transmitting cable (7a, 7b). Measurements are taken with distance between the transmitting cable (7a, 7b) and the receiving cables (10a, 10b) less than the depth of the target object (hydrocarbon reservoir) measured from the sea bed (3).
EFFECT: high sensitivity with respect to target objects containing hydrocarbons and possibility of survey on shallow water.
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MAPPING HYDROCARBON RESERVOIR AND DEVICE FOR REALISING SAID METHOD | 2006 |
|
RU2428719C2 |
| ELECTROMAGNETIC SURVEY FOR RESISTIVE OR CONDUCTING BODIES | 2006 |
|
RU2430387C2 |
| METHOD OF SURVEYING DEPOSITS | 2006 |
|
RU2410728C2 |
| HARDWARE SYSTEM FOR MARINE ELECTRICAL EXPLORATION OF OIL-GAS FIELDS AND MARINE ELECTRICAL EXPLORATION METHOD | 2012 |
|
RU2510052C1 |
| METHOD OF MARINE ELECTRICAL EXPLORATION OF OIL AND GAS FIELDS AND SYSTEM OF EQUIPMENT FOR ITS IMPLEMENTATION | 2006 |
|
RU2324956C2 |
| DATA COLLECTION SYSTEMS FOR MARITIME MODIFICATION WITH COSS AND RECEPTION MODULE | 2016 |
|
RU2639728C1 |
| METHOD FOR MARINE ELECTRICAL EXPLORATION | 2017 |
|
RU2642492C1 |
| SYSTEM AND METHOD OF IMAGING SUBSURFACE CONDUCTIVITY | 2003 |
|
RU2358293C2 |
| RESURVEY ANALYSIS BASED ON ELECTROMAGNETIC EXPLORATION DATA | 2007 |
|
RU2428720C2 |
| GEOELECTRIC SURVEY METHOD AND APPARATUS FOR REALISING SAID METHOD | 2011 |
|
RU2453872C1 |
