... scanned to determine the presence of fractures. This was followed by micro-CT and SEM scanning for higher-resolution images of the larger pores. To improve understanding of the porosity and permeability of the mudrocks analysed, samples were milled by BIB and imaged by SEM producing high-resolution 2D...

... answers of the porosity, permeability, and pore structure of the reservoir. The LWD quadrupole sonic tool not only acquires formation compressional, shear, and Stoneley slowness, but also provides unique insight into high angle fracture identification. The integration of NMR and sonic measurements reveals...

... involves managing the equivalent circulating density (ECD) through adjustments in drilling fluid mud weight, hole cleaning, employing managed pressure drilling, implementing enhanced bridging strategies, modifying casing designs, or updating formation fracture gradients using open-hole logging data...

... development potential using unconventional hydraulically fractured producers following positive initial results from two proof-of-concept wells. This paper describes the results extending the proof of concept into further field development, to mature commercial volumes, and meets project’s value drivers...

... Abstract Hydraulic fracturing of horizontal wells is an effective development mode for low-permeability reservoirs, while new drilling can enhance reservoir recovery. The drilling, fracturing, and production processes all induce changes in reservoir stress, affecting the infill wells’ fracture...

... (2) C f D = k f w p k r x f (3) N o p t = 2 k f k r V p V r Where the penetration ratio (I- x ) and the dimensionless fracture conductivity are formed as follows: (4) I x = 2 x f x e...

... (6) g ( Δ t D , α = 1 ) = 4 3 [ ( 1 + Δ t D ) 1.5 − Δ t D 1.5 ] Note that g 0 in Eq. 1 is equal to g (0). By utilizing the surface area values, we can also evaluate fracture complexity. The surface area for fracturing...

... Abstract Proper characterization of fractures is critical for evaluating the effectiveness of fracturing jobs and optimizing well performance in geothermal energy production, unconventional reservoirs, and other areas. However, accurately determining the size, shape, and orientation...

... The general parameters used across all models are ECD and rock physical properties. For hydraulic fracture prediction, specific input data as outlined in Table 2 are employed. Subsequently, well-specific data in Table 3 , serves as the foundation for modeling the fracture width. Table 2...

....) in a flow field as well as the interaction with a continuous phase (gas or liquid). Round solid quartz sands with diameters of 0.2mm, 0.4mm, 0.6mm and 0.8mm were utilized to stand for field particles. Equivalent flow velocity of 0.64 m/s, 0.76 m/s, 0.89 m/s and 1.02 m/s were adopted to simulate fracturing...

... reservoir conformance improvement performance breakthrough permeability concentration waterflooding enhanced recovery producer deep penetrating cross-linked polymer gel injection injector fracture mature carbonate field Introduction Mumbai high is a mature carbonate field...

...-homogeneity of the reservoir and the distribution law of natural fractures. Based on the shale gas production well area of Changning Company, this project focuses on the research of different natural fracture prediction and the reliability evaluation method of the prediction results and explores the influence...

... the production rates were rapidly decreased after a short time because the near-wellbore basement was re-damaged of producer wells. To eliminate the above problems, this study has presented the optimal acid fracture treatment design with an acid HCl concentration of 15%. The program of acid fracture treatment...

... of the well in this block are vertical wells. This technology breaks the injection production relationship of the original well pattern. The injection wells and production wells are fractured at the same time. Fracturing fluid is not only used for fracturing, but also for supplementing formation energy...

... with the rapid development of computer technology [ 16 , 17 ] , so the fully coupled solution is highly recommended. The numerical simulation techniques of fractures are becoming increasingly popular. The cohesive zone method has a significant advantage because it can directly calculate the location...

... Abstract Naturally fractured reservoirs are more difficult, complex and expensive to evaluate using numerical simulation when compared to conventional reservoirs. There are well known approaches, dual porosity and dual permeability system in which two grids - one for the fractures and another...

... m are the matrix permeability, pressure and porosity, respectively; C t is the total compressibility; t is the production time; μ is the fluid viscosity. Fracture flow equation (4) ∂ p ∂ x Γ = 0 ∂ p ∂ x Γ = 0...

... Abstract Recently, many hydraulic fracturing has been executed in Sirikit oil field (S1), an onshore oil field in Thailand, to unlock the production from tight sands. However, production performances of each stimulated well were varied despite a similar fracturing technique. The variation may...

.... The development of micro-fractures is verified by core data, logging data and dynamic analysis. And the multiplicity of well test interpretation is obvious. The core, thin section, imaging logging and well test data ( Fig.1 ) of A oilfield all show that fractures are developed in Asmari formation...

... Abstract This paper develops a novel WFS model for transient pressure analysis in multi-stage fractured horizontal wells. In the WFS model, two concepts called WFS pressure and WFS index are introduced and an additional skin factor in the interface of inner and outer regions is applied based...