- Industry: Oil & gas
- Number of terms: 8814
- Number of blossaries: 0
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A procedure for estimating the reservoir characteristics between data points. Based on the idea of iterating from a first guess and refining through reduction of errors, the procedure generally transforms the model to normality, simulating the normally distributed transform, and then back-transforming to the original variable of interest.
Industry:Oil & gas
A procedure for correcting pressure measurements in a reservoir to a common datum level. This is not required for calculating kh, permeability thickness, and s, skin effect, but is required for determining average reservoir pressures or for any comparison of pressures in one area of the reservoir to those in another area. The correction is done by determining the average pressure for a given well test in which the pressure gauge is at a known level, and then adding or subtracting the calculated weight of the column of reservoir fluid in pounds per square inch from the difference in elevation between the pressure gauge and the datum level.
Industry:Oil & gas
A procedure conducted to establish the rate and pressure at which fluids can be pumped into the treatment target without fracturing the formation. Most stimulation treatments and remedial repairs, such as squeeze cementing, are performed following an injection test to help determine the key treatment parameters and operating limits. Likewise, injection tests are also conducted when pumping secondary recovery fluids such as water, nitrogen (N<sub>2</sub>), carbon dioxide (CO<sub>2</sub>), natural gas and steam.
Industry:Oil & gas
A procedure conducted to establish the rate and pressure at which fluids can be pumped into the treatment target without fracturing the formation. Most stimulation treatments and remedial repairs, such as squeeze cementing, are performed following an injection test to help determine the key treatment parameters and operating limits.
Industry:Oil & gas
A principle of physics stating that the product of pressure and volume divided by the temperature is a constant for an ideal gas. It is a good approximation for many real gases, such as helium, over reasonable ranges of temperature and pressure.
Industry:Oil & gas
A probability based on Bayes' theorem of interdependent events occurring interdependently.
Industry:Oil & gas
A probability distribution in which the mean and the variance are identical. This distribution was first described by S. D. Poisson, a French mathematician and physicist (1781-1840).
Industry:Oil & gas
A primary recovery mechanism for oil wells containing dissolved and free gas, whereby the energy of the expanding gas is used to drive the oil from the reservoir formation into the wellbore.
Industry:Oil & gas
A pressure phenomenon caused in a wellbore by rise of gas and fall of liquids trapped in a wellbore after a surface shut-in. This phenomenon can cause a "hump" in the buildup curve, and frequently leads to incorrect analysis of buildup test results because the entire early portion of the transient is adversely affected by this pressure response.
Industry:Oil & gas
A pressure test applied to the formation directly below a casing shoe. The test is generally conducted soon after drilling resumes after an intermediate casing string has been set. The purpose of the test is to determine the maximum pressures that may be safely applied without the risk of formation breakdown. The results of the test are used to design the mud program for the subsequent hole section and to set safe limits on casing shut-in or choke pressures for well-control purposes.
Industry:Oil & gas
