The unique way involves the construction of 1-3-4D geomechanical models
Today, many emergencies while drilling are connected with rock instability. Collapse leads to large time and financial expenses.
The problem is that most of the existing models for assessing sustainability include several parameters that are most often included in the list of difficult-to-obtain data, - explains Associate Professor, Candidate of Technical Sciences Alexey Podyachev.
These include, for example, the mechanical properties of the rock, which are determined by the core salvage (the rock column extracted from the well). And this core is difficult-to-obtain material.
Most often it is taken from potentially productive formations, and the problem of wall instability arises on overlying horizons, the core of which is missing or lost its original properties as a result of long-term storage and irreversible processes.
The new methodology of the scientists of the Samara Polytech is based on an additional, deeper interpretation of the standard set of geophysica and seismic data.
It involves the construction of 1-3-4D geomechanical models. The 1D model helps assess the stability of the borehole wall, the 3D model shows the stress field in the entire area of the field, the 4D model reflects the change in the stress field over time.
All this allows us to qualitatively and quantitatively assess the stability of the borehole wall throughout the section and in each geographical point of the studied area. Currently, a specialized 3D Modeling Center is creating at the university that will conduct a full range of such research.
The Polytech scientists method has already been tested on the territory of the Samara region in JSC "Samaraneftegaz" and in the territory of Western Siberia in LLC "RN-Purneftegaz".
Also, a number of experiments and comparisons were carried out on one of the most difficult in terms of geology shelf of the North Sea, where a huge number of faults, thinnings away and other anomalies.
Olga Naumova | EurekAlert!
Geochemists measure new composition of Earth’s mantle
17.09.2019 | Westfälische Wilhelms-Universität Münster
Low sea-ice cover in the Arctic
13.09.2019 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Researchers from the Department of Atomically Resolved Dynamics of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg, the University of Hamburg and the European Molecular Biology Laboratory (EMBL) outstation in the city have developed a new method to watch biomolecules at work. This method dramatically simplifies starting enzymatic reactions by mixing a cocktail of small amounts of liquids with protein crystals. Determination of the protein structures at different times after mixing can be assembled into a time-lapse sequence that shows the molecular foundations of biology.
The functions of biomolecules are determined by their motions and structural changes. Yet it is a formidable challenge to understand these dynamic motions.
At the International Symposium on Automotive Lighting 2019 (ISAL) in Darmstadt from September 23 to 25, 2019, the Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, a provider of research and development services in the field of organic electronics, will present OLED light strips of any length with additional functionalities for the first time at booth no. 37.
Almost everyone is familiar with light strips for interior design. LED strips are available by the metre in DIY stores around the corner and are just as often...
Later during this century, around 2060, a paradigm shift in global energy consumption is expected: we will spend more energy for cooling than for heating....
Researchers from the Department of Atomically Resolved Dynamics of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg, the University of Potsdam (both in Germany) and the University of Toronto (Canada) have pieced together a detailed time-lapse movie revealing all the major steps during the catalytic cycle of an enzyme. Surprisingly, the communication between the protein units is accomplished via a water-network akin to a string telephone. This communication is aligned with a ‘breathing’ motion, that is the expansion and contraction of the protein.
This time-lapse sequence of structures reveals dynamic motions as a fundamental element in the molecular foundations of biology.
Two research teams have succeeded simultaneously in measuring the long-sought Thorium nuclear transition, which enables extremely precise nuclear clocks. TU Wien (Vienna) is part of both teams.
If you want to build the most accurate clock in the world, you need something that "ticks" very fast and extremely precise. In an atomic clock, electrons are...
10.09.2019 | Event News
04.09.2019 | Event News
29.08.2019 | Event News
17.09.2019 | Materials Sciences
17.09.2019 | Health and Medicine
17.09.2019 | Ecology, The Environment and Conservation