A reservoir-rock sample has a porosity of 0. 18 measured at 14.7 psis. The rock compressibility is0.77 X 10 5psi *.What would the rock porosity be at 2,000 and at 3,000 psis? Plot the relationship be tween ¢ and p in a pressure range of 14.7 to 5,000 psis

Q: 1- A soil profile consisting of three layers is shown in Figure below. 1. Calculate the values of o,…

A: Step 1: At D point, σ =110 x 3 + 120 x 5+118 x 2.5 = 1225 lb/ft2 U =7.5 X 62.4 =468 LB/FT2 σ' = σ –…

Q: corresponding val- of y1. (y = 27 kN/m') (b) Crystalline igneous rocks like granite, gneiss, and…

A: a.)  The Mullers equation can be written as: ηγ=γ-γ1 Substitute the value of n as '0.35' in above…

Q: data are given from the laboratory consolidation test. e₁ = 1.10 σ= 65.0 kN/m² e₂ = σ₂=240.0 kN/m²…

A: The Compression Index (Cc) is equal to the slope of the graph of pressure versus void ratio (log…

Q: 6. A large piece of dry rock has a mass of 2,350 kg. and a volume of 0.925 m³. The specific gravity…

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Q: 17 A soil profile consists of sand (7-m thick) which overlies a layer of clay (6-m thick). Ground…

A: Given data in question  Void ratio Degree of saturation Specific gravity  Water table To find out…

Q: A vertical stress of 100 kPa is applied to a saturated clay, the excess pore water pressure (kPa) at…

A: Given  Vertical stress=100kPa

Q: The effective stress failure envelope of a sand can be given as σ3= σ1tan 41.  A drained triaxial…

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Q: A soil profile consists of sand (9-m thick) which overlies a layer of clay (5-m thick). Ground water…

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Q: A sample was obtained from point A in the submerged clay layer shown below. It was determined that…

A: A )  Given Data : w = 54 % Gs = 2.78  To Find : Effective vertical stress at A ? A problem of Soil…

Q: The friction angle, d', of a normally consolidated clay specimen collected during field exploration…

A: Unconfined compressive strength is  a special case of the Tri axial test in which the cell or…

Q: The upstream pressure on a rock sample is 0.113MPa and the downstream pressure is 0.1MPa. Under this…

A: Darcy's law : Darcy's law is a mathematical formula that defines how fluid flows through a porous…

Q: A consolidated un-drained triaxial test was performed on a specimen of saturated clay with a kg…

A: Given : σ3 = 2.0 kg/cm2 σ1 - σ3 = 2.8 kg/cm2 u = 1.8 kg/cm2 θ = 57 o This is a problem of Soil where…

Q: Permeability tests were carried out on the samples collected from two different layers as shown in…

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Q: A 3 m saturated clay layer is covered by 1 m-thick sand and is underlain by sand as well. The water…

A: The given data is shown below: Thickness of clay layer=3 mThickness of sand layer=1 mDepth of water…

Q: Table 1 given below presents the results of a conventional oedometer consolidation test conducted on…

A: The compressibility of the soil takes place in two different methods namely consolidation and…

Q: consolidated clay specimen, the results o 10 lb/ft², Deviator stress at failure = 3,65:

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Q: A soil profile consists of sand (6-m thick) which overlies a layer of clay (6-m thick). Ground water…

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Q: A saturated rock specimen has unit weight of 22.00 kN/m3 and dry unit weight of 20.50 kN/m3.…

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Q: The time for 65% consolidation of a 19-mm clay specimen (drained at top and bottom) in the…

A: The coefficient of clay is : Cv=TvHdr2tFor the clay in laboratory and field the coeff. of…

Q: 1. A Sample of Clay is isotropically normally consolidated was then sheared (standard) in a drained…

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Q: Shear stress kN/m² 100 200 Normal stress kN/m²

A: Given that :- Normal stress σ1= 200 kN/m2  σ3=100 kN/m2 we have to calculate the angle of internal…

Q: a. Calculate the variation of o,u ,and o' with depth. b. If the water table is rises to the top of…

A: The given figure shows the soil profile. It is required to calculate the variation of effective…

Q: Consider the upward flow of water through a layer of kaolinite in a tank. The total thickness of the…

A: Note- Since we only answer up to 3 sub-parts, we’ll answer the first3. Please resubmit the question…

Q: =) For the soil deposit shown below, determine the maghltu following total stress pore water…

A: Total stress :⇒at z=0σ=0⇒at z=4σ=1.924=7.68tm3⇒at z=11σ=1.924+2.111-4=22.38tm3

Q: Q3: Refer to the soil profile shown in the figure below: a) Calculate the variation in vertical…

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Q: Problem 3) Shown below is a cross-section through a soil layer. A Shelby tube sample was taken from…

A: Ko = 0.5  Ā = -0.1 To find- Effective stress of the sample after extrusion Skempton (1954) and Ladd…

Q: Calculate the consolidated-undrained friction angle and the drained friction angle.

A: Consolidated undrained test

Q: 12m 4m 12m 6m Sm 9m 14m

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Q: A soil profile consists of sand (7-m thick) which overlies a layer of clay (9-m thick). Ground water…

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Q: The following compres: specimen (G, 2.73) wh. TABLE G Time (min) Gauge (mm) Time (min) 5.00 36 Gauge…

A: Saturated clay specimen Gs=2.73 H=13.6 mm TV time factor for 90% consolidation=0.848 t90=time…

Q: Question attached

A: Final settlement is calculated as:  ΔH= ΔeH/(1+e) In an oedometer test: dh=de*h/(1+eo) The change in…

Q: Q3) A consolidated un drained triaxial test was performed on a specimen of saturated clay with a…

A: Given data  Confining stress = 20 kpa  Deviator stress = 28 kpa  Failure angle = 50°

Q: A sandy soil has a drained angle of friction of 38degrees. In a drained triaxial test on the same…

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Q: 1. Triaxial tests were carried out on 54-mm-diameter (NX co. intact rock specimens. The applied…

A: It is given that :

Q: An unaisturbed sample of clay, 24 mm in thickness, consolidometer. The total change in the thickness…

A: Given- T=24mmt1=4.74mmP1=200 Kn/m2P2=400Kn/m2t2=6.13mmW=32.6%G=2.72H=1m

Q: Problem 2. A certain soil sample with cohesion of A kPa, and angle of internal friction is B degrees…

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Q: A large piece of dry rock has a mass of 2450 kg and volume of 0.925 m³. The specific gravity of the…

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Q: A soil profile consisting of three layers is shown in Table and Figure below i. Calculate the values…

A: Total stress=σ=γzPore water stress=u=γwzEffecrive stress=σ=σ-u

Field applications of hydraulic conductivity

Hydraulic conductivity is one of the hydraulic properties of soil defined as a measurement of the ability of a porous medium to permit water movement or fluid flow through it. It is denoted by the letter K. It is influenced by the density and viscosity of the fluid. It is also called permeability. Hydraulic conductivity is defined as the ratio of velocity to the hydraulic gradient. The different methods used to determine the hydraulic conductivity are laboratory methods (constant head permeability tests and falling head tests), in-situ field methods (pumping in and pumping out tests), small scale field tests (infiltration tests and slug tests), and indirect methods such as estimation from grain size, consolidation test data, and horizontal capillary test. The pedotransfer function (PTF) method is a specific empirical estimating approach employed in the soil sciences is also used to determine the hydraulic conductivity of the soil.