A recuperation test was carried out on a 1.5-meter diameter clay open well. Calculate the yield in m3 /hr of the said well at a specific point in time when the depression head is 0.75 m. Show your solution.
Q: A tubewell of 30 cm diameter penetrates fully into an artesian aquifer. The strainer length is 15 m.…
A:
Q: Estimate the seepage under the concrete dam shown in the figure below in cubic feet per day using…
A: The given data is: Length of dam (L) = 400 ft Flow length (B) = 200 ft Permeability of soil (k) =…
Q: 1- calculate the critical oil flow rate at different vertical permeabilities. 2- Draw and discuss…
A: The solution is attached below
Q: observe the head and drawdown of the groundwater. Calculate the steady flow pumping required for the…
A: Given: Confined depth = 40 mh1 = 85.3 mh2 = 90.6 mr1 = 30 mr2 = 100 m
Q: (c) A well fully penetrated in a 30 m thick confined aquifer. After a long period of pumping at a…
A: The flow rate is Q=3250 m3/day or Q=0.04 m3/s. The distances are, r1=50 mr2=125 m The drawdowns are,…
Q: Based on observations of the rate of travel between two observation wells of a tracer element having…
A:
Q: A pumping test was carried out in a soil bed of thickness 15 m and the following measurements were…
A:
Q: The discharge from a fully penetrating well under steady state pumping in a confined aquifer is…
A: Given Discharge Q=1000 liter/minute =1.0 m3/min=0.0166 m3/sec Thickness of Aquifer, B =20m r1=6m…
Q: A 1,000-foot-long horizontal well is drilled in a reservoir with the following characteristics: k, =…
A: Joshi equation states that the fluid flows through a multi media and it is divided into two…
Q: A well in a confined aquifer pumped at rate of (220 gallon/min) for (500min), the aquifer has (48…
A: Given Datawu=11u=1∆s=2.4 feet=h0-h t=4.1 min =4.1 min ×11440d/min =2.9×10-3 d Pumping…
Q: In a recuperation test, the static water level in an open well was depressed by pumping by 3 and it…
A: Recuperation test use to calculate the discharge or yield
Q: An earth dam is shown in the figure below Determine the seepage rate, q, in m^3/day/m length. Given:…
A: Using Scaffernak's method FInd the value of…
Q: Compute the stock tank oil initially in place (STOIIP) for a reservoir with the following properties…
A: Area=40acres=40×43,560ft3thicknessh=18ftporosityφ=18%=0.18S=25%=0.25Oil formation…
Q: A well 12‐in in diameter penetrates 108 ft below the static water table. After a long period of…
A: Data - h1=108-12=96 fth2=108-7.4=100.6 ftr1=57 ftr2=148 ft
Q: A permeability test is inducted with a sample of soil that is 60 mm in diameter and 120 mm long .…
A:
Q: A well is pumped for 20 minutes at a rate of Q=2599 cubic meters per day. After the pumping stopped…
A:
Q: The results of flow net analysis for a particular dam are as follows: • Number of flow channels = 6…
A:
Q: Q- In fine sand aquifer region, design a well to get 10 litres/s yield under depression head of 2.5…
A: Given data- Discharge Q=10 litres/s=10×10-3 m3×3600 /hrQ=36 m3/hrDepression head H=2.5 mconstant…
Q: 3.1 Construct IPR of a vertical well in an oil reservoir. Consider (1) transient flow at 1 month,…
A: We have to Construct IPR of a vertical well in an oil reservoir by Consider ing (1) transient flow…
Q: A 30 cm well is pumped at the rate of 1000 1pm. The transmissibility of the aquifer is o.015 m²/s.…
A: The given data is: Q=1000 Lps Q=1/60 m3/s x=120 m a=120 m T=0.015 m2/s r=80 m
Q: Example 4.7 A field pumping test was conducted from an aquifer of sandy soil of 4 m thickness…
A:
Q: Problem # 2. A pumping test was made in a sand layer extending to a depth of 15m. The initial…
A: Given data: Sand depth = 15 m G.W.T =2 m below ground surface. r1=3m r2=7.5 m S1=1.5 m S2=0.35 m…
Q: QUESTION 4 A settling analysis is run on a Type 1 suspension in a laboratory column with a port of…
A: Given- Type 1 suspension overflow = 440 m2/m.day
Q: A recuperation test was carried out on a 1.5-meter diameter clay open well. Calculate the yield in…
A: Given data- Recuperation Test Diameter of the clay open well (D) = 1.5 m Depression Head = 1 m To…
Q: 3.0 Q2: Determine the three parameters of the 25 Horton model represents in the following…
A:
Q: Problem 3 - A 20 cm-diameter extraction well is drilled in an unconfined aquifer. The elevation of…
A: The given data is: h1=65 m h2=? R1=0.2 m R2=40 m K=1*10-2 cm/sec Q=500 m3/d=500/(24*60*60) m3/s
Q: Hydrometeorology (Ground Water) Recuperation Test A recuperation test was carried out on a 1-meter…
A:
Q: DETERMINE: B. Specific yield of the soil and specific capacity of the well
A: In the question, the given values are Dimensions of the well= 6.60x4.05m Depth= 4.7m Normal water…
Q: Determine the minimum dimension of a particle that can be completely removed from a settling…
A: Given: Rate of overflow, v = 30 m3/d/m2 Specific gravity, G = 2.65 Dynamic viscosity = 1 x 10-5…
Q: A stratified aquifer consists of 2 ft of 200-md sand, 3 ft of 100-md sand, and 5 ft of 10-md sand.…
A:
Q: A recuperation test was carried out on a 1.2-meter diameter clay open well. Calculate the yield in m…
A: Given Dia of open well = 1.2 m H2. = 0.8 m
Q: Samples from monitoring wells indicate that a plume of contaminants migrate under a dump. The plume…
A: Given Maximum pumping Rate : 5000 M3/day
Q: Two monitoring wells are installed along the flow path with the following characteristics. If a…
A: Given: The porosity is 0.5. The hydraulic conductivity is 1000 m/day. The distance between two wells…
Q: A test was carried out on a 2-meter diameter clay open well. Calculate the yield in m 4 /hr of the…
A: Given, Diameter of open well=D= 2m A=π4×22=3.14 m2 head= H=2m For Clay, K/A =0.25
Q: QUESTION 4 A settling analysis is run on a Type 1 suspension in a laboratory column with a port of…
A: Solution; Given data; Type 1 suspension overflow=440 m2/m.day
Q: following data relate to a pump-out test: Diameter of well = 24 cm; Thickness of confined aquifer =…
A:
Q: A clay sample is 2.5 cm high and has a diameter of 6.5 cm. It is placed in an oedometer with a…
A: Given:- The height of the clay sample = 2.5 cm The diameter of the sample = 6.5 cm The inner…
Q: A well pumping test was carried out to determine the bulk permeability of a confined aquifer. The…
A: Given data in question Discharge Confined aquifer Depth Drawdown Radius of well To find out…
Q: Question 1 The discharge from a fully penetrating well under steady state pumping in a confined…
A: Given:- s1 = 3 m s2 = 2m r1 = 5m r2=12m B = 20 m Q = 1000 lpm To find :- K
Q: Assuming the data given in the following table, calculate turbulence effect in horizontal well for…
A: Solution- ln (y-33) =6 t y -33 = e6t y=e6t +33
Q: fer to the cross section of the earth dam shown in the figure. Calculate the rate of seepage through…
A: Casagrande's method is a method used to find soil's liquid limit. Darcy's law can be used to…
Q: Problem (4) The following results have been reported for field pumping test from a well, where the…
A: Given, Disharge (q) = 0.68 m³/min h1= 5.6m h2= 5m r1=60m r2= 30m Our aim is to determine the,…
Q: A 30 cm diameter well completely penetrates a confined aquifer of permeability 45 m/day. The length…
A:
Q: A pumping test was carried out in a soil bed of thickness 20m and the following measurements were…
A:
Q: ) A well of size 6.60 x 4.05 m and depth 4.7 m in the lateritic soil near Mangalore (west coast of…
A: Given Data Size of the well=6.60×4.05 mThe depth of the well=4.7 mNormal water level=3.825 mPumping…
Q: Charyeong wants to determine the permeability of an aquifer. The aquifer has a 300 mm diameter test…
A:
Q: Problem 1 - An unconfined aquifer is 10 m thick and is being pumped so that one observation well…
A: Thickness = 10 m Distance = 76m Drawdown = 0.5 m Coefficient of permeability= 50 m/day Distance from…
Q: A well is planned for pumping a confined aquifer at a rate of 40.51 L/s. The hydraulic conductivity…
A: Given data: The thickness of the confined aquifer is H=55 m. The hydraulic conductivity of the…
A recuperation test was carried out on a 1.5-meter diameter clay open well. Calculate the yield in m3 /hr of the said well at a specific point in time when the depression head is 0.75 m. Show your solution.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images
- A recuperation test was carried out on a 1.5-meter diameter clay open well. Calculate the yield in m/hr of the said well at a specific point in time when the depression head is 1 m.During the recuperating test, the water level was initially lowered by 2.65 m and is recuperated by 1.45 m in 1 hour. Determine the yield (in litre per sec) from an open well of diameter 3 m under a depression head of 3.45 m.Question 3 a. An oil well in the Nameless Field is producing at a stabilized rate of 600 STB/day at a stabilized bottom-hole flowing pressure of 1800 psi. Analysis of the pressure buildup test data indicates that the pay zone is characterized by a permeability of 120 md and a uniform thickness of 25 ft. The well drains an area of approximately 40 acres. The following additional data is available: w = 0.25 ft, A = 40 acres Bo = 1. 25 bbl/STB, Ho = 2. 5 cp Calculate the pressure profile (distribution) and list the pressure drop across 1 ft intervals from rw to 1.25 ft, 4 to 5 ft, 19 to 20 ft, 99 to 100 ft, and 744 to 745 ft.
- Problem (4) The following results have been reported for field pumping test from a well, where the top permeable layer is unconfined and underlain by an impermeable layer, for a steady state condition: m3 q = 0.68 min h, = 5.6m at r, = 60m h, = 5m at r, = 30m Calculate the hydraulic conductivity (cm/s) of the permeable layer.A saturated aquifer sample core of diameter 2.54 cm and length of 6 cm weighs 63 grams. After drying the sample weighs 53 grams. The core sample was placed into an permeameter and exposed to a unit hydraulic gradient. The measured flowrate was 25.4 milliliters/second. The water levels in three wells in the same aquifer were measured in meters above MSL. The levels were: Well MW-1: 83.1 m; Well MW-2: 84.6 m; Well MW-3: 83.9 m. Well MW-2 is located 1km due north of Well MW-1, and Well MW-3 is located 700 meters Northeast of Well MW-1. Determine: 1. Estimate the porosity of the aquifer. 2. Estimate the hydraulic conductivity of the aquifer. 3. Sketch the relative positions of the three wells. Use MW-1 as the origin of the local (your sketch) coordinate system, and North is to the top of your sketch. 4. Determine the magniture and direction of the hydraulic gradient in the aquifer monitored by the three wells. Indicate the hydraulic gradient on your sketch (direction and magnitude) 5.…PROBLEM NO. 3 SOIL PERMEABILITY A pump test was conducted on a test well drilled into a confined aquifer, with the results showr ** elow. If water was pumped at a steady flow of 205 gal/min, deter... the coefficient of permeability (k in ft/sec) of the permeable soil in the aquifer. 150 ft 75 ft IMPERMEABLE LAYER 20 ft: 12 ft TEST WELL IMPERMEABLE LAYER AQUIFER 16 ft OBSERVATION WELLS Lectures 5
- Answer both 1 (i) and (ii) 1) i) A 6 inch diameter well that fully penetrates a 40ft thick open aquifer is pumped at a rate of 100 gpm. The drawdown in the well is 22ft when a steady water level is established. The drawdown in a well 152ft distant is 12ft. Estimate the coefficient of permeabiliity of the soil deposit. ii) Discuss the validity of the answer obtained in 1( i ) and suggest how would you improve the test data obtained to produce a better value of k. Why?A field pumping test was conducted from an aquifer of sand soil of 4 m thickness confined between two impervious strata. When equilibrium was established, 90 liters of water was pumped out per hour. The water elevation in an observation well 3.0 m away from the test well was 2.1 m and another 6.0 m away was 2.7 m from the roof level of the impervious stratum of the aquifer. Find the value of k of the soil in m/sec.Q- In fine sand aquifer region, design a well to get 10 litres/s yield under depression head of 2.5 m. Assume value of C'/A=0.60 cu-m/hr.
- A pumping test was carried out in confined aquifer thickness 2 m and the following measurement was recorded. Rate of pumping was 10 m^3/s; drawdown in pumping well was 2.0 m while on the observation well located at 15 m and 20 m from the centre of the pumping well were 1.6 m and 1.4 m, respectively. Determine the hydraulic conductivity of soil.The permeameter in a perrneability test setup involves a soil sample 200 mm diameter and a length of 30 mm. The height of water is kept constant at 400 mm. In a duration of 4 min, water was collected in the graduated flask having a volume of 420 cu. cm. Determine the following. Flow Rate Hydraulic gradient Hydraulic conductivityAn unconfined aquifer is 100 feet thick was evaluated using a field pumping test. The depth to groundwater is 10 feet. At a distance of 1000 feet, the drawdown was 40 feet, and at a distance of 5000 feet it was 20 feet. Find the permeability of the aquifer assuming that a steady-state of 960 gal/minute during the test in ft/sec.