... The concept of “fault-karst” reservoirs has been proposed based on the studies of fault deformation, karstification, and dissolution processes within fault zones in the Tarim Basin. Particularly, the strike-slip faults play a significant role in modifying the Ordovician carbonate reservoirs...

... At present, some scholars have proposed numerical simulation methods for wettability combined with digital core technology, but most of them are related to uniform wettability state, which is obviously unfavorable to unconventional reservoirs whose real conditions are more in line with non...

... We introduce a pressure-dependent rock physics model for shales and sands to analyze the effects of pore pressure and diagenesis on high-impedance reservoirs. With datasets at multiple scales (plugs, logs, and seismic) we show how diagenesis and composition combination impacts the seismic...

... The sequence and migration path of charge fluids in reservoirs are major concerns for both exploration and for understanding individual reservoirs. Reservoirs in the Neogene in the Gulf of Mexico often possess both biogenic gas and oil thereby providing a test to understand both charge sequence...

... of all the basin, including the Ixachi reservoir. The Tithonian section is transitionally overlain by Lower Cretaceous platform and basin carbonates which consist of dolomites, limestones and evaporites. In the Albian-Cenomanian, a massive platform carbonate sequence was deposited, named the Cordoba...

... Seismic interpretation is the main method to identify and characterize the ultra-deep Ordovician fracture-cavity reservoirs in the Tarim Basin. Due to the diverse scales of fracture-cavity reservoirs, it is difficult to clearly image all scales of fracture-cavity reservoirs only by conventional...

... Fault-controlled fracture-cavity body is a new reservoir type since discovered in Tarim basin, China. However, fracture-cavity body is the main hydrocarbon storage space. Conventional methods including seismic inversion can’t predict the internal small-scale reservoir structure of fracture...

... of the five penetrated amplitude anomalies are mainly a response of fluid (∼30 API & 800-1500 scf/bbl GOR) on high porosity (∼33% avg) unconsolidated Miocene reservoirs. Our modelling shows that substituting the fluid from brine to oil in these reservoirs causes approximately a ∼15% reduction...

... Permeability is the important property controlling fluid transport in fractured porous reservoirs. Since spatial variations and anisotropy in permeability are the intrinsic characteristics due to the heterogeneous and anisotropic structures fluid flow through in actual gas-bearing fractured...

... and amplitude variations are implemented to track movement of both reservoir gas and water associated with production. Spectral attributes are used to indicate facies discrepancies throughout the reservoir that may affect fluid flow behavior. Geometric attributes are used to elucidate any previously overlooked...

... This study investigates the impacts of reservoir pressure increase on gas leakage and oil spill from the Brent reservoirs of the Brent field in the northern North Sea. Our analyses show: 1) a rapid increase in reservoir pressure, attributed to recent deep burial of the Brent reservoirs based...

... The key to the development and utilization of enhanced geothermal systems (EGS) lies in reservoir fracturing and modification. Therefore, effective monitoring that assesses the effectiveness of fracturing operations is crucial. Traditional electromagnetic methods lack the capability to detect...

... The Cambrian marginal reef-shoal reservoirs of the Tarim Basin represent crucial zones for hydrocarbon exploration, exhibiting promising exploration potential. However, the complexity and significant heterogeneity within and between reef-shoal reservoirs from different phases make...

... Mass transport complexes (MTCs) are widespread within the Thunder Horse field in the Gulf of Mexico and hampers the interpretation of the top of the producing Brown reservoir. The chaotic seismic character of the MTC section can often be identified, but the low resolution of the subsalt seismic...

... This study describes the challenges of oil rim development such as water and gas coning and high development costs and propose methods to optimize their exploitation. Through a mechanistic examination, the paper proposes strategies to boost oil recovery factors in such reservoirs, particularly...

... Strike-slip fault is well-developed in Tarim basin, faults together with karst caves developed along the faults in deeply buried Ordovician carbonate is main reservoir in this area. Accurate prediction of these faults and karst caves is crucial for petroleum exploration. Different seismic...

... A deepwater Gulf of Mexico reservoir exhibits a simple geologic structure of a tilted sheet reservoir, three-way seal against salt. However, the (well-connected) oil column is complex and bimodal. The top half of the oil column exhibits an enormous gradient of gas-oil ratio (GOR) of 8000 scf/bbl...

... With the advent of dedicated OBN we routinely achieve excellent repeatability and low 4D noise levels in the Deepwater GoM. Clear 4D signals for reservoirs at depths down to 25000’ are regularly observed. For the field we select here, which is part-subsalt, we observe clear 4D signals at 23000...

... Modular Dynamic Tester (Mdt) data from previous drill, logs, mud logs and petrophysical approach to see the potential of low resistivity reservoirs. To overcome the sand problem, fractpack stimulation was carried out. upstream oil & gas indonesia government sedimentary rock clastic rock...

... Groundwater undergoes dissolution along carbonate rock fault zones, leading to the development of different types of caves, pores, and fractured reservoirs along these fault zones, depending on the strength of the dissolution process. These different reservoir types exhibit different seismic...