Study on Rock Mechanic Characteristics and Fracturing Countermeasures of Glutenite Reservoirs in Mahu Depression

2018 ◽  
Vol 40 (04) ◽  
pp. 47-53 ◽  
Author(s):  
红永 郝
Keyword(s):  
Rock Mechanic

scholarly journals Integrated petrographic – rock mechanic borecore study from the metamorphic basement of the Pannonian Basin, Hungary

2015 ◽  
Vol 7 (1) ◽  
Author(s):  
László Molnár ◽  
Balázs Vásárhelyi ◽  
Tivadar M. Tóth ◽  
Félix Schubert
Keyword(s):  
Compressive Strength ◽  
Fault Zone ◽  
Uniaxial Compressive Strength ◽  
Pannonian Basin ◽  
Damage Zone ◽  
Rock Mechanic ◽  
Fault Rock ◽  
Hydrocarbon Reservoir ◽  
Migration Pathway ◽  
Metamorphic Basement

AbstractThe integrated evaluation of borecores from the Mezősas-Furta fractured metamorphic hydrocarbon reservoir suggests significantly distinct microstructural and rock mechanical features within the analysed fault rock samples. The statistical evaluation of the clast geometries revealed the dominantly cataclastic nature of the samples. Damage zone of the fault can be characterised by an extremely brittle nature and low uniaxial compressive strength, coupled with a predominately coarse fault breccia composition. In contrast, the microstructural manner of the increasing deformation coupled with higher uniaxial compressive strength, strain-hardening nature and low brittleness indicate a transitional interval between the weakly fragmented damage zone and strongly grinded fault core. Moreover, these attributes suggest this unit is mechanically the strongest part of the fault zone. Gougerich cataclasites mark the core zone of the fault, with their widespread plastic nature and locally pseudo-ductile microstructure. Strain localization tends to be strongly linked with the existence of fault gouge ribbons. The fault zone with ∼15 m total thickness can be defined as a significant migration pathway inside the fractured crystalline reservoir. Moreover, as a consequence of the distributed nature of the fault core, it may possibly have a key role in compartmentalisation of the local hydraulic system.

A Review of Soft Computing Methods Application in Rock Mechanic Engineering

2016 ◽  
pp. 1-70 ◽  
Author(s):  
Nurcihan Ceryan
Keyword(s):  
Rock Mass ◽  
Soft Computing ◽  
Rock Mechanics ◽  
Computing Methods ◽  
Rock Material ◽  
Rock Slope Stability ◽  
Rock Mechanic ◽  
Natural Rock ◽  
Soft Computing Techniques ◽  
Soft Computing Methods

Engineering behavior of rock mass is controlled by many factors, related to its nature and the environmental conditions. Determining all the parameters, ranking their weights, and clarifying their relative effects are very difficult tasks to accomplish. To overcome these difficulties, many researchers have employed soft computing methods in rock mechanics engineering. The soft computing methods have taken an important role in rock mechanics, and their abilities to address uncertainties, insufficient information and ambiguous linguistic expressions stand out in treating complex natural rock mass. This chapter briefly will review the development of soft computing techniques in rock mechanics engineering, especially in predicting of rock engineering classification system and mechanical properties of rock material and rock mass, determination weathering degree of rock material, evolution of rock performance, blasting and, rock slope stability. In addition, the future of the development and application of soft computing in rock mechanics engineering is discussed.

scholarly journals GROUND WATER IN GRANITE ROCKS AND TECTONIC MODELS

1972 ◽  
Vol 3 (3) ◽  
pp. 111-129 ◽  
Author(s):  
INGEMAR LARSSON
Keyword(s):  
Ground Water ◽  
Systematic Study ◽  
The Other ◽  
High Yield ◽  
Rock Mechanic ◽  
Granite Rock ◽  
Other Hand ◽  
Uniaxial Testing ◽  
Granite Rocks ◽  
Deformation Plane

A systematic study has been carried out concerning ground water in faults and fractures in a granite rock and the results are compared with those of uniaxial testing of granite specimens in rock mechanic laboratories. Dikes of diabase intersect the granite and indicate the plane of deformation syntectonic to the dikes. A collection of the tectonic data from the granite is statistically treated and the tectonic picture of the area fits very well into the deformation plane, indicated by the intrusion (Jotnian). The faults and fractures of the granite are, according to their position in relation to the plane of deformation, hypothetically interpreted as tension and shear faults. The faults in shear position are supposed to be tight and have very little ground water. The tension faults, on the other hand, are supposed to be open and to be capable of a high yield of ground water. This hypothesis is tested by core-drillings, percussion drillings and test pumping.

Linking Rock Mechanic Petrophysics to Proppant Selection in the Wolfcamp: Capitalizing on Log Based Value of Information

2014 ◽  
Author(s):  
Shane J Prochnow ◽  
Ronald Brown ◽  
Jarrad Paul Rexilius ◽  
Michael J Fields
Keyword(s):  
Value Of Information ◽  
Rock Mechanic

Rock mechanic research

Eos ◽  
1969 ◽  
Vol 50 (1) ◽  
pp. 12
Author(s):  
Anonymous
Keyword(s):  
Rock Mechanic

scholarly journals Investigation of Dynamic Mechanical Properties of Coal after Freeze-Thaw Cyclic Conditions

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Shuang Gong ◽  
Wen Wang ◽  
Furui Xi ◽  
Wenlong Shen
Keyword(s):  
Mechanical Properties ◽  
Rock Slope ◽  
Dynamic Mechanical Properties ◽  
Rock Mechanic ◽  
Cycle Times ◽  
Freeze Thaw ◽  
Dynamic Mechanical ◽  
Experimental Apparatus ◽  
Coal Rock ◽  
Water Saturated

Due to the extensive excavation of the mine pit, a special frozen rock slope is formed, which transforms the permafrost (coal rock) of certain thickness in the frozen state to the melting state. To evaluate the dynamic mechanical properties and deformation characteristics of coal under cyclic freeze-thaw conditions, freeze-thaw experiments with different cycle times were conducted. And the mechanical properties of coal under quasistatic and dynamic conditions were investigated by using GCTS multifunctional rock mechanic experimental apparatus and SHPB dynamic loading apparatus, respectively. The results show that with the increase of freeze-thawing times, mass of both water-saturated and dried coal samples gradually decreased, the postpeak becomes gentler, and the specimens show ductile damage characteristics. The damage of the coal samples changed more after 30 freeze-thaw cycles, when deterioration of the coal samples was highest. The elastic modulus of the coal sample after freeze-thawing decreases continuously with the increase of the number of freeze-thaw cycles, and its trend decreases approximately linearly. Dynamic compressive strength of the coal samples decreases after freeze-thaw cycles, and this trend is consistent with the quasistatic loading conditions.

scholarly journals Numerical Simulation and Experimental Studies of Karst Caves Collapse Mechanism in Fractured-Vuggy Reservoirs

Geofluids ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-21
Author(s):  
Liwen Guo ◽  
Shuoliang Wang ◽  
Liming Sun ◽  
Zhihong Kang ◽  
Chenjun Zhao
Keyword(s):  
Numerical Simulation ◽  
Rock Mechanics ◽  
Rock Mechanic ◽  
Collapse Mechanism ◽  
Karst Cave ◽  
Simulation Studies ◽  
Research Results ◽  
Karst Caves ◽  
Cave System ◽  
Main Factors

Karst cave collapse usually occurs during the process of drilling and reservoir development. Karst cave collapse increases drilling risk and seriously affects oil production. In order to reveal the collapse mechanism of karst caves in fractured-vuggy reservoirs in Tahe oil field, rock mechanic experiments and numerical simulation studies were conducted. In rock mechanic experiments, three types of rock mechanics tests (uniaxial compression, triaxial compression, and Brazilian splitting) were carried out to obtain the basic rock mechanics parameters. In numerical simulation studies, the collapse conditions of a single karst cave and a cave system were studied. Numerical simulation results indicate that for a single karst cave, the size and geometrical features of karst caves are the main factors influencing collapse condition. For a cave system, a combination pattern and distance between caves are two main factors affecting collapse condition. In order to facilitate the application of these research results, the authors present formulas for calculating the critical conditions of karst cave collapse by means of multivariate linear regression method. The calculation formulas and prediction chart were verified as consistent with actual field results. The research results in this paper have great theoretical and practical value for revealing the mechanism of karst cave collapse in fractured-vuggy carbonate reservoirs.

Geophysics and rock‐mechanic test for dredging in the Arthur Kill Channel, New York

2010 ◽  
Author(s):  
William F. Murphy ◽  
W. Bruce Ward ◽  
Beckett Boyd ◽  
William Murphy ◽  
Richard Nolen‐Hoeksema ◽  
...  
Keyword(s):  
New York ◽  
Rock Mechanic
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