The article discusses the results of studies of new types of geocomposite materials used for anti-filtration and drainage purposes in hydraulic engineering and environmental protection construction. As the main elements, the presented geocomposite materials include various types of synthetic materials – bentonite mats and profiled geomembrane. A distinctive feature of these materials is the inclusion of additional elements of geotextile material or polymer geomembrane in their design, these elements are connected to the main element by thermal bonding. As a result, the combined geocomposite materials acquire new properties: they become more waterproof and durable. At the same time, waterproof materials are used for anti-filtration systems (as screens and coverings for canals, ponds, dams and various types of waste collectors), and previous material are used for drainage systems (as drainage in hydraulic and civil engineering). New types of geocomposite materials have improved properties on water resistance and water permeability (filtration coefficient), durability and strength.

The article deals with the «GP» geo-composite drainage material, which is used in hydro-technical, civil, as well as environmental, industrial and landscape construction. This material is intended for complex application, as a separating, filtering and reinforcing layer in the structures of protective dams on rivers, reservoirs, channels, an earth work of linear transport constructions (automobile and railway facilities) and other hydraulic engineering constructions. It is a combined geo-synthetic material, including a rigid geo-grid of the lattice structure and a filtering geotextile element. As a result of the carried out researches, its basic physical and mechanical characteristics have been established: tensile strength, surface density of geotextile and the material, relative elongation at maximum load, filtration coefficient normal to the material level.

Определяющим показателем качества капельного полива является формируемая в подкапельном почвенном пространстве область (зона) увлажнения почвы, форма и параметры которой должны соответствовать биологическим потребностям культивируемых растений. Задача определения граничного очертания контуров увлажнения и внутриконтурного распределения изоплет с определенным уровнем влажности почвы до настоящего времени остается неразрешенной в связи с многофакторным влиянием среды и условий капельного полива на процесс формирования геометрических параметров и влажностных характеристик увлажняемого подкапельного пространства. Системно накапливаемая база экспериментального материала по исследованию единичных контуров увлажнения почвы и внутриконтурного распределения изоплет влажности позволяет получить уравнение, описывающее очертание ограничивающих контур линий, а афинность расположения изоплет влажности почвы позволяет построить очертания «изоплетных» разновлажностных контуров, расположенных в пределах области увлажнения почвогрунтового пространства. Полученное экспериментальное уравнение, описывающее очертание зон увлажнения подкапельного почвенного пространства, позволяет не только прогнозировать и определять очертание капельных контуров влажности, их геометрические параметры и влажностные характеристики, но и управлять их формированием в соответствии с биологическими особенностями и потребностями возделываемых при капельном орошении сельскохозяйственных культур с соответствующим повышением их продуктивности.

The sustained annular pressure (SAP) related issues are always actual and especially in oil and gas wells with high GOR. The presence of SAP may have a negative effect and cause numerous issues such as uncontrollable gas seepage to the surface (gryphons), well performance impairment, and increased risk of accident occurrence. To prevent accident occurrence risks increase it is necessary to perform specific downhole logging operations in order to identify SAP sources in wells located in a green oil and gas fields. The precise SAP sources localization requires the use of highly sensitive logging techniques as measurable physical filed perturbations caused by completion integrity damages are small-scale. This paper describes the logging methodology of the spectral acoustic and high precision temperature techniques in combination with pulsed electromagnetic defectoscope. The key requirement of the successful operations using the above-mentioned techniques was to select and maintain special well operation conditions to ensure the optimal survey conditions for solving the particular issue without pulling out of the downhole equipment.

Studies of local moisture contours were carried out on landscape formations with surface slopes of 0, 3, 5, 6, 7, and 9 °, the soil cover of which is represented by medium southern chernozems. As a result of the analysis, the facts of the local asymmetric moisture contours formation on the slope lands with an excess of the boundary surface in the slope direction and along-slope of the contour axis displacement have been found. In the process of experimental material processing the experimental dependences that make it possible to evaluate the influence of the slopes steepness on the contour geometric parameters are established. A generalization of the experimental material and well-known recommendations for determining the local moisture contours parameters made it possible to develop a methodology for predicting the shape of drip moistening  contours in soils formed on slope lands.