Submit an Article
Become a reviewer
Eldar R. Gasumov
Eldar R. Gasumov
Associate Professor, Ph.D.
Azerbaijan State Oil Academy
Associate Professor, Ph.D.
Azerbaijan State Oil Academy
Baku
Russia

Articles

Modern Trends in Hydrocarbon Resources Development
  • Date submitted
    2022-04-12
  • Date accepted
    2022-11-17
  • Date published
    2022-12-29

Development of technological solutions for reliable killing of wells by temporarily blocking a productive formation under ALRP conditions (on the example of the Cenomanian gas deposits)

Article preview

Modern field operation conditions are characterized by a decline in gas production due to the depletion of its reserves, a decrease in reservoir pressure, an increase in water cut, as well as due to the depreciation of the operating well stock. These problems are especially specific at the late stage of development of the Cenomanian deposits of Western Siberia fields, where the anomaly factor below 0.2 prevails, while gas-bearing formations are represented mainly by complex reservoirs with high-permeability areas. When killing such wells, the classical reduction of overbalance by reducing the density of the process fluid does not provide the necessary efficiency, which requires the search for new technical and technological solutions. In order to prevent the destruction of the reservoir and preserve its reservoir properties during repair work in wells with abnormally low reservoir pressure, AO “SevKavNIPIgaz” developed compositions of special process fluids. A quantitative description of the process of blocking the bottomhole formation zone is proposed by means of mathematical modeling of injection of a gel-forming solution into a productive horizon. The well killing technology includes three main stages of work: leveling the injectivity profile of the productive strata using three-phase foam, pumping the blocking composition and its displacement with the creation of a calculated repression. Solutions obtained on the basis of a mathematical model allow optimizing technological parameters to minimize negative consequences in the well killing process.

How to cite: Gasumov R.А., Minchenko Y.S., Gasumov E.R. Development of technological solutions for reliable killing of wells by temporarily blocking a productive formation under ALRP conditions (on the example of the Cenomanian gas deposits) // Journal of Mining Institute. 2022. Vol. 258. p. 895-905. DOI: 10.31897/PMI.2022.99
Oil and gas
  • Date submitted
    2019-12-20
  • Date accepted
    2020-09-01
  • Date published
    2020-10-13

Features of the underground storages construction in depleted oil and gas condensate fields

Article preview

The paper considers the features of the underground storages (US) construction in depleted oil and gas condensate fields (DOGCFs). The requirements for the structure of the formation, corresponding to the parameters of the object for possible US creation are presented. The influence of geological, hydrogeological, mining and technical rock formation conditions on the reliability and tightness of underground storages, including underground gas storages, has been evaluated. The necessary conditions for the US design are analyzed at the example of the Ach-Su oil and gas condensate field, in the presence of a well-explored trap with acceptable parameters for the construction of an underground storage. An important aspect is the geological conditions that meet the criteria for selecting the object: the required structure, the absence of fracturing faults, high reservoir properties of the formation, a sufficient volume of the deposit for the storage. Geological conditions lay the basis for determining the individual characteristics of the US construction technology at each DOGCF. The refined results for the current gas-saturated pore volume and the rate of pressure drop in the formation are presented, which makes it possible to select improved technological indicators in the course of operation of the created US. In order to select the optimal option for the design and construction of the US, the results of economic and geological scenarios analysis were studied concurrently with the capabilities of the technological operation of the object and transport system, which can ensure the maximum daily production of the storage.

How to cite: Gasumov R.A., Gasumov E.R., Minchenko Y.S. Features of the underground storages construction in depleted oil and gas condensate fields // Journal of Mining Institute. 2020. Vol. 244. p. 418-427. DOI: 10.31897/PMI.2020.4.4