A5015362504- Methane Hydrates and Related Phenomena
- Hydrocarbon exploration and reservoir analysis
- earthquake and tectonic studies
- Seismic Imaging and Inversion Techniques
- Drilling and Well Engineering
- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- Hydraulic Fracturing and Reservoir Analysis
- CO2 Sequestration and Geologic Interactions
- Reservoir Engineering and Simulation Methods
- Seismic Waves and Analysis
- Geochemistry and Geologic Mapping
- Geological and Geophysical Studies
- Geothermal Energy Systems and Applications
- Geological Studies and Exploration
- Seismology and Earthquake Studies
- Atmospheric and Environmental Gas Dynamics
- Landslides and related hazards
- Earthquake Detection and Analysis
- Tunneling and Rock Mechanics
- Geotechnical and Geomechanical Engineering
- Advanced Chemical Sensor Technologies
- Geophysical and Geoelectrical Methods
- Enhanced Oil Recovery Techniques
- High-pressure geophysics and materials
GFZ Helmholtz Centre for Geosciences
2015-2024
Luleå University of Technology
2021
Japan External Trade Organization
2017
University of Potsdam
2010
A 1.6 km riser borehole was drilled at site C0009 of the NanTroSEIZE, in center Kumano forearc basin, as a landward extension previous drilling southwest Japan Nankai subduction zone. We determined principal horizontal stress orientations from analyses breakouts and drilling‐induced tensile fractures by using wireline logging formation microresistivity images caliper data. The maximum orientation is approximately parallel to convergence vector between Philippine Sea plate Japan, showing...
Abstract Fault rock assemblages reflect interaction between deformation, stress, temperature, fluid, and chemical regimes on distinct spatial temporal scales at various positions in the crust. Here we interpret measurements made hanging‐wall of Alpine during second stage Deep Drilling Project (DFDP‐2). We present observational evidence for extensive fracturing high hydraulic conductivity (∼10 −9 to 10 −7 m/s, corresponding permeability ∼10 −16 −14 m 2 ) extending several hundred meters from...
We have analyzed noble gas isotopes in 19 mud samples from 116–3943 m borehole depth of the San Andreas Fault Observatory at Depth (SAFOD) Main Hole context origin and spatial variability fluids occurring seismogenic depths. The measured 3 He/ 4 He ratios range between 0.40 1.02 Ra (Ra is atmospheric ratio 1.39 × 10 −6 ), with 20 Ne values 0.33 4.92, revealing a mixture three components to total helium: (1) helium, (2) helium crustal signature, (3) mantle‐derived helium. air‐corrected fall...
During the second phase of Alpine Fault, Deep Fault Drilling Project (DFDP) in Whataroa River, South Westland, New Zealand, bedrock was encountered DFDP-2B borehole from 238.5–893.2 m Measured Depth (MD). Continuous sampling and meso- to microscale characterisation whole rock cuttings established that, sequence, sampled amphibolite facies, Torlesse Composite Terrane-derived schists, protomylonites mylonites, terminating 200–400 above an Principal Slip Zone (PSZ) with a maximum dip 62°. The...
Abstract Obtaining in situ samples from active subduction systems is critical for assessing the material properties and geological evolution of rocks sediments that host plate boundary deformation, advancing our understanding processes lead to fault locking rupture. However, accessing coring these materials challenging, commonly requires riser drilling. The International Ocean Discovery Program (IODP) Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) project has successfully used...
Abstract Continuous mud gas loggings during drilling as well offline sampling are standard procedures in oil and operations, where they used to test reservoir rocks for hydrocarbons while drilling. Our research group has developed real‐time monitoring techniques scientific non‐hydrocarbon formations mainly sample study the composition of crustal gases. We describe detail this technique provide examples evaluation continuous logs, which not always easy interpret. Hydrocarbons, helium, radon...
Integrated Ocean Drilling Program Expedition 338 was the second scientific expedition with D/V Chikyu during which riser drilling conducted as part of Nankai Trough Seismogenic Zone Experiment. Riser enabled sampling and real-time monitoring mud gas an onboard system ("SciGas"). A second, independent provided by Geoservices, a commercial logging service. Both systems allowed determination (non-) hydrocarbon gas, while SciGas also monitored methane carbon isotope ratio (δ13CCH4). The...
Abstract. Fault slip is a complex natural phenomenon involving multiple spatiotemporal scales from seconds to days weeks. To understand the physical and chemical processes responsible for full fault spectrum, multidisciplinary approach highly recommended. The Near Observatories (NFOs) aim at providing high-precision spatiotemporally dense near-fault data, enabling generation of new original observations innovative scientific products. Alto Tiberina Observatory permanent monitoring...
The Kumano fore-arc basin overlies the Nankai accretionary prism, formed by subduction of Philippine Sea Plate beneath Eurasian plate offshore Kii Peninsula, SW Honshu, Japan.Seismic surveys and boreholes within framework Trough Seismogenic Zone Experiment (NanTroSEIZE) project show evidence gas hydrates free basin.Here we use high-quality borehole sonic data from Integrated Oceanic Drilling Program (IODP) Site C0009 to quantify distribution in landward part basin.The Brie theory is used...
A 3 km deep research borehole KFD1 was drilled in the Koyna reservoir-triggered seismicity region, Western India, between December 2016 and May 2017. The 1967<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mi>M</mml:mi></mml:math>6.3 earthquake had generated a NNE-SSW trending surface fissure zone Nanel-Donichawadi-Kadoli sector. is located ~5 south of Kadoli along trend Donichawadi fault zone. Online gas monitoring carried out during drilling from 1315 m to 2831 depth...
The real‐time mud gas monitoring during drilling of the 2.2 km deep SAFOD Pilot Hole has proved successful. A nearly complete depth profile was obtained for methane, radon, helium, and, with limitations, carbon dioxide. Within sedimentary section (0–768 m) yielded highest CH 4 , CO 2 and 222 Rn concentrations, whereas He comparably low. Four major gas‐rich zones were identified. Methane is a mixture microbial thermogenic origin. Mud concentrations are much lower in underlying granitic rocks...
Abstract. The Weihe Basin, enclosed by the Chinese Loess Plateau to north and Qinling Mountains south, is an outstanding, world-class continental site for obtaining high-resolution multi-proxy records that reflect environmental changes spanning most of Cenozoic. Previous geophysical sedimentary studies indicate basin hosts 6000–8000 m thick fluvial–lacustrine successions Eocene Holocene. This record provides excellent unique archive decipher long-term tectonic–climate interactions related...
Abstract The geological formation of the Muschelkalk is widespread in center North German Basin (NGB) and increasingly attracting interest for application geothermal energy extraction or high-temperature aquifer thermal storage (HT-ATES). This study investigates Middle Triassic “Rüdersdorfer Schaumkalk” , which was former injection horizon natural gas facility Berlin, Germany. For first time, detailed chemical microbiological analyses water this Lower limestone were conducted...
Noble gas abundance and isotope data from 12 drilling mud samples obtained during IODP Expeditions 338 348 provide new insights on fluid origin migration in the inner accretionary prism below Kumano forearc basin offshore SE Japan. The originate three adjoining boreholes (C0002F, C0002N C0002P) spanning depths between 950 3050 meters sea floor (mbsf) are composed of air variable contributions mantle-derived crustal fluids. Air-corrected 3He/4He ratios Exp. fall 0.44 ± 0.24 Ra 3.26 0.28 Ra....