Geology Institute

Shengli, China

Geology Institute

Shengli, China
Time filter
Source Type

Vahabov V.G.,SOCAR | Johnson C.L.,University of Utah | Afandiyeva M.A.,Geology Institute
73rd European Association of Geoscientists and Engineers Conference and Exhibition 2011: Unconventional Resources and the Role of Technology. Incorporating SPE EUROPEC 2011 | Year: 2011

A better understanding of the shift of the eastern Paratethys from an open sea to a restricted estuarine system recorded in the Paleocene-Miocene interval of the eastern Paratethys is necessary for understanding the tectonic evolution of this area. Detailed geochemical characterization offers insights not available through traditional methods, and highlights the complicated history of these strata that is so often oversimplified. Additionally, there is substantial evidence for significant terrestrial input throughout the Oligocene-Early Miocene. All of these factors suggest that the Kura Depression underwent a different history than other parts of the Paratethys, including the South Caspian Basin to the east. This has important implications for the tectonic evolution of this area, which records the effects of the Arabian-Eurasian collision and, eventually, the separation of the Caspian Sea to the east from the Black Sea to the west. Additionally, the suspected differences between geochemical character of the source rock where it is exposed versus deeper in the basin where it is generating petroleum are highlighted, suggesting caution in the direct application of outcrop data to basinal petroleum generation models.

Liu X.,CAS Lanzhou Institute of Chemical Physics | Liu X.,Chinese Academy of Sciences | Ye Q.,CAS Lanzhou Institute of Chemical Physics | Song X.,Geology Institute | And 4 more authors.
Soft Matter | Year: 2011

We demonstrate here that surface wetting transitions and contact angle hysteresis can be significantly altered by manipulating the droplet-surface interaction, which has never been reported before. The dynamic wetting behavior of a pressed water droplet on responsive polymer brushes-modified anodized alumina with pre-modified dilute initiator is shown. The wetting transition between superhydrophobicity and hydrophilicity can or cannot be achieved depending on the responsiveness between droplets of different pH, the concentrations of electrolytes and the environmental temperature and surface grafted stimuli-responsive polymer brushes. The contact angle changes are rather apparent, giving the surface double-faced wetting characteristics. The responsive surface composition regulated wetting will be very useful in understanding wetting theory, and will be helpful experimentally in designing smart surfaces in, for example, microfluidic devices. © 2011 The Royal Society of Chemistry.

Liu J.,CAS Lanzhou Institute of Chemical Physics | Liu J.,Northwest Normal University | Li J.,CAS Lanzhou Institute of Chemical Physics | Yu B.,CAS Lanzhou Institute of Chemical Physics | And 6 more authors.
Langmuir | Year: 2011

A novel compound of an imidazolium type of ionic liquid (IL) containing a biomimetic catecholic functional group normally seen in mussel adhesive proteins was synthesized. The IL can be immobilized on a silicon surface and a variety of other engineering material surfaces via the catecholic anchor, allowing the tribological protection of these substrates for engineering applications. The surface wetting and adhesive properties and the tribological property of the synthesized self-assembled monolayers (SAMs) are successfully modulated by altering the counteranions. The chemical composition and wettability of the IL SAMs were characterized by means of X-ray photoelectron spectroscopy (XPS) and contact angle (CA) measurements. The adhesive and friction forces were measured with an atomic force microscope (AFM) on the nanometer scale. IL composite films were prepared by spin coating thin IL films on top of the SAMs. The macrotribological properties of these IL composite films were investigated with a pin-on-disk tribometer. The results indicate that the presence of IL SAMs on a surface can improve the wettability of spin-coated ionic liquids and thus the film quality and the tribological properties. These films registered a reduced friction coefficient and a significantly enhanced durability and load-carrying capacity. The tribological properties of the composite films are better than those of pure IL films because the presence of the monolayers improves the adhesion and compatibility of spin-coated IL films with substrates. © 2011 American Chemical Society.

Liu J.,Northwest Normal University | Liu J.,CAS Lanzhou Institute of Chemical Physics | Yu B.,CAS Lanzhou Institute of Chemical Physics | Ma B.,Geology Institute | And 5 more authors.
Colloids and Surfaces A: Physicochemical and Engineering Aspects | Year: 2011

Model surfaces with controllable wettability gradient are made by adjusting the feed mole ratio of 11-mercapto-1-undecanol and 1-octadecanethiol to form mixed self-assembled monolayers on gold. The surface adhesion spectra were obtained by force volume analysis at nanometer scale with atomic force microscopy and direct force measurement of droplets on surfaces with a microbalance. The results from direct measurement of liquid droplet-substrate adhesion are in good agreement with the measurements of force volume statistics and contact angle. It can thus be a useful supplement approach to understand surface wetting and adhesion property. © 2011 Elsevier B.V.

Aliyev F.,Geology Institute
76th European Association of Geoscientists and Engineers Conference and Exhibition 2014: Experience the Energy - Incorporating SPE EUROPEC 2014 | Year: 2014

As it is known, Caucasus is being a part of the Alpline-Himalaya orogenic belt is located between Eurasian and Arabian plate, which in its turn is acting toward north-west and making collision zone. This circumstance drives this area as earthquake-prone zone. A special interest is attracting southern slope of the Greater Caucasus. So that, there occurred strong and destructive earthquakes from historical time here, as well as the earthquakes with a strong enough magnitude were taking place in Instrumental period too. A series of strong earthquakes that occurred here in 2012 once more revealed the actuality of the problem of the seismic hazard assessment in this region. With this study the foci zones of the earthquakes that occurred here recently have been analyzed. Focal mechanisms of earthquakes in the separate groups reveal different, mainly close-to-vertical, planes of fault and fault-slip type movements in the earthquake focuses. Only in four cases established were strictly upthrust and upthrust-overthrust type movements.

Feyzullayev A.A.,Geology Institute
72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010: A New Spring for Geoscience. Incorporating SPE EUROPEC 2010 | Year: 2010

Two basic factors are identified in the South Caspian Basin (SCB) from well logs, downhole measurements up to depths of approximately 7 km and 2D basin modeling: tectonic stress (rapid subsiding and sedimentation) and temperature (hydrocarbon generation). Accordingly to this, two main overpressure zones are established in this basin: upper zone (depth interval 600-1200 m), conditioned by a disequilibrium rock compaction (undercompaction) of rocks and lower zone (zone of decompaction of rocks) resulted from hydrocarbon generation (depth below 5 km). The lower overpressure zone is the most intense and depends on the thickness of the shale sequence, content and type of organic matter and the temperature conditions of its transformation into hydrocarbons. In this zone the greatest risk may be associated with the gas generation at depths greater than 9 km, due to both more intense thermal breakdown of kerogen and the cracking of liquid hydrocarbons generated earlier. Overpressures arc a major cause of diapirism and mud volcanism in SCB. © 2010, European Association of Geoscientists and Engineers.

Loading Geology Institute collaborators
Loading Geology Institute collaborators