tailieunhanh - Calculating precise water saturation with hydraulic flow unit using leverett’s j-function. a case study of field a, Cuu Long basin, offshore Vietnam

Estimating water saturation is one of the main challenging aspects in reservoir characterisation. Good estimation of this parameter enables us to calculate reserve accurately. Hence, it is of great importance to estimate precisely water saturation based on hydraulic flow units of reservoir rocks. In this paper, a modified J-function was used and developed to determine the water saturation in the hydrocarbon reservoirs located in field A, Cuu Long basin. The capillary pressure data (Pc ) and water saturation (Sw ) as well as routine core sample analysis including porosity (φ) and permeability (K) were used to develop the J-function. First, the normalised porosity (Фz ), the rock quality index (RQI), and the flow zone indicator (FZI) factors were used to classify all data into discrete hydraulic flow units (HU) containing unique pore geometry and bedding characteristics. Subsequently, the modified J-function was used to normalise all capillary pressure curves corresponding to each of predetermined HUs. The results showed that the reservoir rock was classified into several separate rock types with definite HUs and reservoir pore geometry. Eventually, the water saturation was determined using a developed equation corresponding to each HU gained by normalised J-function. The equation is a function of rock characteristics including Фz , FZI, lithology (J’), and pore size distribution index (∂). The proposed technique can be applied to any reservoir to determine the water saturation in the reservoir, specially the ones with high range of heterogeneity in the reservoir rock properties. | Calculating precise water saturation with hydraulic flow unit using leverett s j-function. a case study of field a Cuu Long basin offshore Vietnam

• Hoá dầu
• Water saturation
• Rock quality index
• Hydraulic unit
• Flow zone index
• Cuu Long basin
• Soil texture
• Gravimetric water content
• Moisture depletion rate
• Drying pattern
• Soil moisture after saturation
• BMC Pediatrics
• Brain water content
• Regional cerebral oxygen saturation
• Near infrared spectroscopy
• Preterm infant
• Sandy beaches
• Pore water quality
• Benthic fauna
• Low dissolved oxygen saturation
• Coastal water
• Agricultural science
• Natural plants grown under macronutrients limitation
• North Sinai sand dunes
• Water saturation deficits
• Soil size particles
• Plant species
• Favorable factorscreatee oligocene formation
• A petroleum prospec
• South east area
• Lower Oligocene sandstone
• The tectonic evolution and new exploration
• The tectonic evolution
• Vietnam continental shelf
• Gas exploration for next stages
• Tạp chí Phát triển Khoa học và Công nghệ
• Applying seismic stratigraphy analysis
• Assessing upper Oligocene stratigraphic traps
• Southeastern Cuu Long Basin
• Minimize risks in exploration drilling
• The fan shaped distribution
• Seismic processing
• Seismic imaging
• Seismic diffraction
• Faults inside basement
• Oil field in Cuu Long basin
• Basement fault fracture prediction
• Tạp chí Khoa học
• Khoa học trái đất và môi trường
• Well log data
• The lithology physical parameters
• The artificial neural networks
• Artificial neural networks
• Hydrocarbon potential
• Stratigraphic trap
• Forming mechanism
• Reservoir quality
• Gender and fisheries
• the Lower Mekong Basin
• đồng bằng sông Cửu Long
• mekong evironment
• Environmental Issues
• Recent Infrastructure Development
• the Mekong Delta
• the Mekong Basin
• phát triển cơ sở hạ tầng
• Production technology designed
• Heavy oil recovery
• A marginal field offshore Vietnam
• The Field Development Plan
• Electric Submersible Pump
• Facies classification
• Cross recurrence plots
• Well log curves
• Recurrence plots
• Artificial neural network
• Bach Ho oil field
• Lower Miocene sediments
• Seismic attribute
• Depositional environment
• Diagenetic process
• Capillary pressure
• Scanning electron microscopy
• X ray diffraction
• 3D fault seal capacity
• Fault clay
• Fault permeability
• Fault thickness
• Fault transmissibility
• Vấn đề môi trường
• Khí tượng thủy văn
• Cân bằng nước
• Mike Hydro Basin
• Tài nguyên nước
• Quy hoạch tổng hợp lưu vực sông
• Xâm nhập mặn
• Xói lở bờ sông
• An approach to constrain maximum horizontal stress magnitude
• Wellbore Failure observations from image logs
• Wellbore Failure observations
• Velocity model
• Depth uncertainty analysis
• Machine learning