Results 31 to 40 of about 1,982,142 (272)

Integrated microanatomy and microstructure of the maxillary tooth plate reveal a reinforced feeding system and tougher diet in Late Triassic Hyperodapedontinae (Rhynchosauria, Archosauromorpha)

The Anatomical Record, EarlyView.
Abstract Hyperodapedontine rhynchosaurs possessed a unique oral apparatus, long interpreted as an adaptation for processing abrasive and resistant plant material. However, the microanatomical and histological evidence supporting this interpretation remains poorly documented.
Caio A. Scartezini, Pedro L. B. Pruciano, Brodsky D. M. Farias, Marina B. Soares   +3 more
wiley   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

The heat flow, thermal history of the oil source Lower Jurassic Togurskaya suite and oil-and-gas potential of the Paleozoic of the Koltogor mezodepression(southern segment of the Koltogor-Urengoy paleorift)

Геофизический журнал, 2019
Input of the pre-Jurassic («Paleozoic») oil is important to the reproduction of the in-situ resources base of Western Siberian oil and gas extraction.
G. A. Lobova, T. E. Luneva, V. I. Isaev, A. N. Fomin, Ju. V. Korzhov, M. F. Galieva, D. S. Krutenko   +6 more
doaj   +1 more source

Updating a reservoir geological model in order to optimize waterflooding when extracting residual oil reserves from stagnant zones

Proceedings of higher educational establishments. Geology and Exploration, 2021
Background. In the Russian Federation, as well as in many other oil and gas producing countries, waterflooding technology is frequently used as a secondary method of oil production. This technology is aimed, on the one hand, at reservoir pressure maintenance (RPM), and, on the other, at enhancing oil recovery and intensifying oil production.
A. Kh. Shakhverdiev, S. V. Arefyev, A. A. Polishchuk, B. P. Vaynerman, R. R. Yunusov, A. V. Denisov   +5 more
openaire   +3 more sources

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

Deep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley   +1 more source

Formation conditions and evolution of oil and gas source strata of the Laptev sea shelf ore and gas province

Известия высших учебных заведений: Геология и разведка, 2021
Introduction. To date, no unified well-established concepts have been developed regarding the oil and gas geological zoning of the Laptev Sea shelf, as well as other seas of the Eastern Arctic. Different groups of researchers define this region either as
V. Yu. Kerimov, Yu. V. Shcherbina, A. A. Ivanov   +2 more
doaj   +1 more source

Relations of the Oil Production to the Geological Structure of the 3rd Oil Zone of the Okha Oil Field, North Saghalin

Journal of the Japanese Association for Petroleum Technology, 1940
以上説明し來つた要點を摘記すれば次の如くである I. オハ第3層,第9, 15號區に於る原油埋藏量は約2,200,000屯と推定し得る。而して埋藏量の分布を見るに,コントール線+5m～-5mに包まれた區域が最も多量で,この兩側は共に減少する。之は油層の表面積が狹くなる許りでなく,端水を含まぬ所の,油層の有効層厚が減少するからである。 II. 原油の回收量の最大なのは-15m～-25mの區域である。昭和12年度末迄の回收率は同區域では37.3%に達するが油層全體として見れば約20%である。 III. 産油減退率は-5m～-35m附近は急であるが, +15m～-5m附近は緩である。年毎に區域別に産油率を比較すると,最大率を示す區域は年々背斜頂部に移動し來る。 IV.
openaire   +2 more sources

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

Deep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

Express zoning of the parent suite on density of generated oil resources (by the example of Nyurol'ka megadepression)

Известия Томского политехнического университета: Инжиниринг георесурсов, 2017
The relevance of the research is caused by the need to develop the criteria and to improve the technique of assessing hard-to-produced reserves of shale oil (accumulated in situ) of Bazhenov suite in West Siberian oil-and-gas province.
Valery Ivanovich Isaev, Olga Stepanovna Isaeva, Galina Anatolyevna Lobova, Vitaly Ivanovich Starostenko, Aleksandr Nikolaevich Fomin   +4 more
doaj   +2 more sources