Academic literature on the topic 'Euler Deconvolution and Hydrocarbon accumulation'

Aeromagnetic imaging over part of Niger Delta was carried out with a view to interpret the anomalies over the areand to equally delineate the structural features suitable for hydrocarbon accumulation within the study area.econd vertical derivative, first horizontal derivative and analytic signal were applied to enhance deep seated structures.The derivative maps revealed parallel to sub-parallel trending NE-SW fracture zones in the basement underlying the study area, coinciding with the landward extension of the deep oceanic Chain and Charcot fracture zones. Hence, the identified lineaments (faults or lithologic contacts) and structures in the area can be attributed to the tectonic setting of the area and probable migratory routes for hydrocarbon migration.

The study deals with the Geophysical investigation of Iwo and Ilesha, Osun State, using aeromagnetic data. Qualitative as well as quantitative interpretation of the aeromagnetic data were carried out to obtain more information about the thickness of sedimentary basins. Two methods were used in the interpretation; there are Euler deconvolution method and source parameter imaging (SPI). Oasis Montaj software was employed in the analysis, the Magnetic intensity ranges from a minimum value of -22.7 nT to a maximum value of 110.4 nT, this indicate that the area is characterised with low and high magnetic signature and could be as a result of difference in magnetic susceptibility, depth and the nature of the magnetic anomalous bodies present. The depth for magnetic source ranges from 187.6 to 1005.5 m using parameter imaging (SPI).Using Euler deconvolution method, the depth estimation for structural index (SI = 0.5, 1.0, 1.5) ranges from 300 m to 25481m, 262.9m to 1826.2m and 391.0m to 3243.6m respectively. The results obtained indicate shallow depths to magnetic anomalies which may not be suitable for hydrocarbon accumulation.

The main information provided by gravity maps is the geographical distribution of density heterogeneities in the subsurface. It is an important tool widely used for the mapping of geological structures, especially in the oil industry. Thus, this study based on the interpretation of aerogravity data has for objective, the qualitative description of the characteristics of the gravity anomalies of the study area, interpretation and mapping of the gravity lineaments as well as their depths, knowing that the lineaments constitute potential structural traps favorable to the accumulation of the hydrocarbons. Methods such as horizontal derivative, upward continuation and Euler deconvolution are used to give a geological signifiance to the different anomalies and to highlight deep structures. Thus, the analysis of the residual anomaly map revealed elongated negative and positive anomaly zones, oriented globally NW-SE, considered respectively as horst and graben zones. Gravity lineaments, considered as normal faults, are mapped using the horizontal gradient method. Finally, the depths of the density contrasts are estimated by the Euler deconvolution calculation using the value “1” as structural index. The depths thus determined are highly variable. The shallowest depths vary between 3000 m and 6000 m, while the deepest depths reach 18000 m.

Bir Fouad is a significant region in the Western Desert of Egypt. It includes El-Obaiyed Field, which is considered the main Jurassic gas and condensate asset for the Shell-BAPETCO organization in the north part of the Western Desert. This field is strategically important due to its major contribution to Egypt's oil production. The purpose of the gravity data is to use disturbances in earth's gravitational field at the surface to outline the subsurface structures (faults) and determine the depth of the basement as the base of the planning area. The Bouguer gravity anomaly map was separated into regional (deep sources) and residual (shallow sources). Additionally, mathematical edge enhancement filters such as total horizontal derivative, tilt angle, and analytic signal were applied to the Bouguer data utilizing the vertical and horizontal derivatives to delineate the structural framework. Euler deconvolution and source parameter imaging methods were employed to estimate the depth of gravity sources and trends of structural elements. The gravity interpretation indicates that the main tectonics affecting the study area have east–west, east-northeast–west-southwest, west-northwest–east-southeast, northeast–southwest, and northwest–southeast trends, whereas the minor structures are aligned in north–south, north-northeast–south-southwest, and north-northwest–south-southeast trends. The results of depth estimation from applying 2D and 3D modeling, along with the available geologic information (the total depth and density logs for the available wells) illustrate a detailed basement structure map showing the basement configuration. The map reveals that the central and northwestern parts of the investigated area have shallower basement rock depths (3100 m), while the eastern and southwestern parts exhibit a deep basement structure, reaching more than 7000 m. The interpretation of advanced well-log data (the OMRI dipmeter) confirmed the resultant structural trends from the Bouguer gravity map that influence production of the Upper Safa and Lower Safa reservoirs in El-Obaiyed Field.