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Table of Contents:
- How do you calculate borehole yield?
- How do you calculate water yield?
- How do you calculate the specific capacity of a well?
- How is well recovery rate calculated?
- What is well efficiency?
- What is well loss and formation loss?
- What is yield of a well?
- What is a drawdown test?
- What does a well test consist of?
- How is a well test conducted?
- What is a step rate test?
- What is the purpose of drill stem test?
- What is well testing services?
- What is the purpose of well testing?
- What are four phases of well planned test?
- What is STLC and SDLC?
- What is retesting with example?
- What is testing and its types?
- What is a Type 3 test?
- What are the basic testing concepts?
- What are the tools of testing?
- What is manual testing example?
- What are the different types of manual testing?
How do you calculate borehole yield?
Briefly, a yield test is done by pumping a measured flow rate from the hole while monitoring the drawdown in water level. This will be done over a defined period of time. While a genuine yield test brings with it extra costs, the money is worth every cent.
How do you calculate water yield?
How do you calculate the specific capacity of a well?
A well's specific capacity equals the discharge rate (in gpm) divided by the water level drawdown (in feet). For example a well with a pumping rate of 200gpm with a 10foot drawdown has a specific capacity of 20gpm/ft of drawdown.
How is well recovery rate calculated?
Determine the volume in gallons per foot of well bore based on the well diameter (Table 1). Multiply the gallons per foot of well bore times the footage of water level rebound during the recovery. Then divide the result by the time of this recovery to a yield estimated rate of gallons per minute.
What is well efficiency?
The efficiency of a pumping well expresses the ratio of aquifer loss (theoretical drawdown) to total (measured) drawdown in the well. ( Kruseman and de Ridder, 1990) A well efficiency of 70% or more is usually considered acceptable, with 65% being accepted as the minimum efficiency (Kresic, 1997).
What is well loss and formation loss?
When water is pumped out of a well, the total drawdown caused includes not only that of the logarithmic drawdown curve at the well face, but also drawdown caused by flow through well screen and axial movement within the well. The latter drawdown is called well loss.
What is yield of a well?
Well yield is defined as the amount of water that can be pumped from a given well per unit of time.
What is a drawdown test?
A pressure drawdown test is simply a series of bottom-hole pressure measurements made during a period of flow at constant production rate. Usually the well is closed prior to the flow test for a period of time sufficient to allow the pressure to stabilize throughout the formation, i.e., to reach static pressure.
What does a well test consist of?
Standard water tests will typically check for such things as PH, hardness, alkalinity, and turbidity. Standard mineral testing will often include things like iron, calcium, manganese, copper, fluoride, Chloride and others. Coliform bacteria is also typically checked in most well tests, especially in rural areas.
How is a well test conducted?
Overview. Most well tests consist of changing the rate, and observing the change in pressure caused by this change in rate. To perform a well test successfully one must be able to measure the time, the rate, the pressure, and control the rate.
What is a step rate test?
Step-rate tests are run on injection wells to determine the maximum injection rate possible without fracturing the reservoir. The test is conducted by recording the injection pressure and injection rate at several increasing injection rates.
What is the purpose of drill stem test?
A drill stem test (DST) is a procedure for isolating and testing the pressure, permeability and productive capacity of a geological formation during the drilling of a well.
What is well testing services?
In the petroleum industry, a well test is the execution of a set of planned data acquisition activities. The acquired data is analyzed to broaden the knowledge and increase the understanding of the hydrocarbon properties therein and characteristics of the underground reservoir where the hydrocarbons are trapped.
What is the purpose of well testing?
Exploration well: On initial wells, well testing is used to confirm the exploration hypothesis and to establish a first production forecast: nature and rate of produced fluids, initial pressure and well and reservoir properties. Tests may be limited to drill stem testing only.
What are four phases of well planned test?
There are four main stages of testing that need to be completed before a program can be cleared for use: unit testing, integration testing, system testing, and acceptance testing.
What is STLC and SDLC?
Software Development Life Cycle (SDLC) is a sequence of different activities performed during the software development process. Software Testing Life Cycle (STLC) is a sequence of different activities performed during the software testing process.
What is retesting with example?
In simple words, Retesting is testing a specific bug after it was fixed. Example: Say, Build 1.
What is testing and its types?
There are different stages for manual testing such as unit testing, integration testing, system testing, and user acceptance testing. Testers use test plans, test cases, or test scenarios to test a software to ensure the completeness of testing.
What is a Type 3 test?
Type III tests examine the significance of each partial effect, that is, the significance of an effect with all the other effects in the model. They are computed by constructing a type III hypothesis matrix L and then computing statistics associated with the hypothesis L. = 0.
What are the basic testing concepts?
Testing is the process of evaluating a system or its component(s) with the intent to find whether it satisfies the specified requirements or not. Testing is executing a system in order to identify any gaps, errors, or missing requirements in contrary to the actual requirements.
What are the tools of testing?
Types of Tools:
- Test Management Tool. Test Managing, scheduling, defect logging, tracking and analysis. ...
- Configuration management tool. For Implementation, execution, tracking changes. ...
- Static Analysis Tools. ...
- Test data Preparation Tools. ...
- Test Execution Tools. ...
- Test Comparators. ...
- Coverage measurement tools. ...
- Performance Testing tools.
What is manual testing example?
Manual testing is a testing process that is carried out manually in order to find defects without the usage of tools or automation scripting. A test plan document is prepared that acts as a guide to the testing process in order to have the complete test coverage.
What are the different types of manual testing?
Different Types of Manual Testing
- Smoke Testing. Smoke testing is a high-level type of manual testing used to assess whether the software conforms to its primary objectives without critical defects. ...
- Cross Browser Testing. ...
- Acceptance Testing. ...
- Beta Testing. ...
- Exploratory Testing. ...
- Negative Testing. ...
- Usability Testing.
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