following Draw down test has been performed in a cylindrical reservoir assumed to have a drainage area equal to 5‚760‚000 sqft and the following data: Table 1: Reservoir Data Q h rw 90 stb/d 23 ft 0.401 ft φ μ ct B 0.14 1.5 cp 1.6 E-6 1/psi 1.15 Rb/stb 1. 2. 3. 4. Estimate Permeability Estimate the Skin factor S Estimate pressure drop due to skin Estimate flow efficiency Solution Part 1 In a drawdown test‚ plot of Pwf versus production time in a semi log plot‚ can give us the
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Formula Holland & Gaddy‚ Holland (1964) extended the work by Gaddy (1956) and proposed the following formula: Where‚ k is the Gaddy factor‚ w and h is pillar dimensions in.‚ and σp is pillar strength in psi. Holland specified a safety factor between 1.8 and 2.2 for the design of coal pillars‚ with a recommended value of 2.0. The width-to height ratio‚ for which the Holland formula is valid‚ ranges from 2 to 8. Although popular in the 1970s‚ the
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What limitations may legitimately be placed on prisoner’s communications under rule 24.1 of the European Prison Rules Deprivation of liberty does not mean a loss of contact with the outside world.1 Communication of prisoners with the outside world is essential as it serves the important purpose of preventing the prisoners from being isolated‚ decreases the likelihood of staff abuse and promotes reintegration into society.2 Maintaining links between prisoners and the outside world‚ especially with
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Women Contributions to Psychology Jovon Sutphin PSY/310 8 March 2013 Brandi Reynolds Abstract The essay is written about Margaret Flow Washburn. The essay speaks of her background from her early teenage years and progressing through her career as a psychologist‚ her battles of a woman
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Proppant Prospects for Bauxite Mike O’Driscoll Global Head of Research‚ Industrial Minerals Proppant Prospects for Bauxite Mike O’Driscoll Industrial Minerals Since 1967‚ from mine to market: global non-metallic minerals intelligence Proppant Prospects for Bauxite Mike O’Driscoll Outline 1. Proppants & hydraulic fracturing snapshot 2. Evolution of fracturing 3. Fracturing process 4. Proppant types 5. Ceramic proppants & raw material feedstock 6. Market demand trends 7. Summary
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Introduction A space suit is a garment worn to keep a human alive in the harsh environment of outer space‚ vacuum and temperature extremes. Space suits are often worn inside spacecraft as a safety precaution in case of loss of cabin pressure‚ and are necessary for extra-vehicular activity (EVA)‚ work done outside spacecraft. Space suits have been worn for such work in Earth orbit‚ on the surface of theMoon‚ and en route back to Earth from the Moon. Modern space suits augment the basic pressure garment
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Determining Conditions of Probation Simulation When working in the correction’s profession‚ not only do the correction officers need to be sure that criminals stay safe and are able to pay their debt to society‚ they also are responsible for the rehabilitation of the inmates. Once inmates are released from prison they may also have to serve probation or parole as part of their sentencing. Probation or parole is determined on the person’s background such as criminal history‚ family background‚
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Rosa Parks-A True Hero A hero is a person‚ typically a man‚ who is admired or idealized for courage‚ outstanding achievements‚ or noble qualities. Despite what some may argue‚ Rosa Parks is a perfect example of a Civil rights hero. This can be seen not only through the famous Montgomery Bus ride‚ but also through other examples where she showed courage‚ made achievements‚ or proved herself to have noble qualities.1 These include: Sparking the Montgomery bus boycott‚ helping the formation of the
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to a body to the strain those results in the body in response to it. The modulus of elasticity of a material is a measure of its stiffness and for most materials remains constant over a range of stress. . Material | Elastic Modulus | | MPa | psi | Steel | 200‚000 | 30‚000‚000 | Poisson ratio It is the negative ratio of transverse to axial strain. In fact‚ when a sample object is stretched (or squeezed)‚ to an extension (or contraction) in the direction of the applied load‚ it corresponds
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8.31.11 Basic Hydraulics-W @ 8:30 How to Read a Pressure gauge SI System-Metric-Pascals English System-psi kPa=Kilo Pascals 1 kPa=100 pascals 6.9 kPa=1 psi The range of a scale= 1->1000 psi(Range) A gauge could be off 50 lbs!!! The gauge could be wrong- but stated on each gauge 2 kinds of gauges 1. Pressure Gauge-a gauge that measures pressure 2. Flow System Study Guide 1 1. The power output device of a hydraulic system is known as the …ACTUATOR 2. The pressurized fluid used
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