In the oil and gas sector, it is crucial to rapidly expand exploration activities and maintain stable production levels in order to increase reserves of oil and gas. In the southwestern region of Turkmenistan, especially in the Gogerendag–Ekerem uplift zone, production growth can be achieved not only through exploration and drilling at new sites, but also by developing already known fields.

The oil and gas saturation of organic rock formations, their consistency, and the properties of core materials in the Chekishler field allow for the establishment of stratigraphic sequences, the determination of volume and biostratigraphic correlation, and the construction of complex stratigraphy.

The surface of the Chekishler field is overlain by recent and modern sediments. At their base lie deposits from the Neogene, Paleogene, and Mesozoic periods.

The structure of the region’s subsurface stratigraphy has been verified by exploration and appraisal wells of various depths. All fields in the Gogerendag–Ekerem tectonic zone are interconnected. Drilling has been conducted in the Porsy, Adamguduk, Keymir, Miyesser, Ekerem, Gamyshlyja, Akmaya, and similar fields. Additionally, several mud volcanoes have been identified in this zone.

In the oil and gas system of western Turkmenistan, the lower red-colored stratigraphic layer currently serves as a complex reservoir. Based on drilling results, gas and condensate reserves have been calculated for both the upper (Horizons VII, VIII, IX) and lower levels (Horizons AG1, AG1a, AG, AG3, AG4, AG5, and AG6).

As a result of drilling, restoration, industrial pilot operations, and delineation, the reserves were upgraded to higher categories. Gas reserves in the C2 category were delineated and reclassified as industrial. To explore new reservoirs in the unexplored part of the lower red-colored sediments within the Miocene complex, the drilling of several wells has been planned. An assessment of oil and gas resources in the C2 category has been carried out.

The studies confirm the high oil and gas potential of the Chekishler field and support the continuation of geological exploration and research in the Pliocene–Miocene horizons.

Bagtygül ANNAGELDIYEWA,
Head of Laboratory, “Nebitgazylmytaslama” Institute of “Türkmennebit” State Concern

Source: Türkmenmetbugat