Published November 2025, Pg. 4-13

Section: Geology and geophysics

UOT: 551.14:550.83

DOI: 10.37474/0365-8554/2025-11-4-13

Results of gravity–magnetic and 3D seismic surveys conducted in the southeastern Muradkhanli and Jafarli fields

A.S. Hasanov PhD in Soil Sc. - “Oil Gas Scientific Research Project” Institute

A.F. Shakaraliyev - “Oil Gas Scientific Research Project” Institute

N.B. Ahmadli - “Oil Gas Scientific Research Project” Institute

K.R. Mammadov - “Oil Gas Scientific Research Project” Institute

The Muradkhanli structure was discovered in the late 1940 s to early 1950 s as a large-scale, high-intensity local gravity–magnetic anomaly covering the Zardab–Muradkhanli area as a result regional gravity–magnetic exploration works. In 1963–1965, several seismic profiles processed using the reflection wave method revealed that the anomalies were associated with a large buried uplift. Exploration drilling began in 1968. In 1973, during testing of the Upper Cretaceous effusive rocks in Well No. 5, which replaced Well No. 1, an oil fountain was obtained from the 3796–3761 m depth interval with a flow rate of 25 t/day. The oil-bearing nature of the effusive rocks was later confirmed by numerous wells. 
The Jafarli structure was first identified in 1977 through the gravimetric exploration method. The existence of the structure was confirmed as a result of seismic exploration conducted in 1981. At the same time, a reservoir-type anomaly (RTA), a direct indicator of oil and gas presence, was identified in the crest area of the structure.in 1983, drilling commenced, and in the same year the first exploration well discovered an oil reservoir in the Middle Eocene sediments. 
Due to the high interest in these areas, in subsequent years, geological mapping, exploratory drilling, and studies using geophysical methods (gravimetric, magnetic, electrical, and seismic exploration techniques) were carried out.
In 2023, gravimetric surveys were conducted in the areas where 3D seismic exploration had been carried out in the southeastern Muradkhanli and Jafarli fields, using the modern Canadian-made “Scintrex CG-6 Autograv” instruments.
Based on the results of the gravimetric studies conducted, the geological structures of these areas were clarified. Reservoir-type gravimetric anomalies associated with oil and gas were identified in the near-bedrock sections of the Jafarli structure and in the southeastern parts of the Muradkhanli structure. The hydrocarbon potential of the IIIb-SH and III-SH fault zones was investigated, and gravimetric data were analyzed in conjunction with information from deep wells drilled in the study area.

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