Quality factor — a dimensionless measure of how little energy a wave loses per cycle, so a high Q means low attenuation.
A Love wave — a surface wave whose particle motion is horizontal and transverse to the direction of travel.
Quality assurance — the systematic planning and documentation that gives confidence a process will meet its standards.
A formation density curve recorded over one of the four quadrants an azimuthal LWD tool divides the borehole into.
The mode of operation in which a drive is driven in reverse while being braked; commonly expressed as reverse rotation with forward torque.
The mode of operation in which a drive is driven forward without being braked; commonly expressed as forward rotation with forward torque.
The mode of operation in which a drive is driven in reverse without being braked; commonly expressed as reverse rotation with reverse torque.
The mode of operation in which a drive is driven forward while being braked; commonly expressed as forward rotation with reverse torque.
A format for the output of encoders and resolvers in which signal channels are offset by 90 degrees in order to indicate the direction of shaft rotation.
Quadrupole is a distribution of four equal monopoles, or two equal dipoles.
A pass-fail test based on an individual's ability to detect the presence of a test agent while wearing a respirator.
Descriptive information against numerical measurement.
Operationally, the excellence or superiority of a product, as judged by customers.
All actions taken to ensure that standards and procedures are adhered to and that project deliverables meet requirements.
Detecting defects in output against designing the process so they do not occur.
The coordinated activities directing an organization on quality.
The measures by which quality performance is tracked.
Any document that is generated from information in a quality manual or procedure.
The platform's rating of ad relevance, which affects both cost and position.
Service that reliably meets the expectation it set.
The measured limits a product must meet to be sold.
Putting a number on something previously described only qualitatively.
A map showing where each value falls in the distribution of the data rather than showing the value itself.
A test that provides a ratio that compares the concentration of contaminants outside of a respirator's facepiece to the concentration of contaminants inside the facepiece.
Assessing risk in monetary terms against assessing it on ranked scales.
Loop response characterized by a series of overshoots, each of which has an amplitude equal to one quarter the amplitude of the previous overshoot.
One of the three values that divide ranked data into four equal parts, at the 25th, 50th and 75th percentiles.
The second most abundant mineral, with a crystal structure of continuous SiO4 silicon-oxygen tetrahedra, giving an overall chemical formula of SiO2.
A quartz crystal gauge is a dual-mode, thickness-shear, quartz pressure sensor that is used in oilfield services, with high accuracy, resolution, and fast response time.
The two dominant framework minerals of sandstone.
Funding ranking below senior debt but above shares, counted partly as equity by lenders.
Quasi-planar means having some characteristics of a planar system.
Field shorthand for a quaternary amine.
A quaternary amine salt whose nitrogen carries four groups and a permanent positive charge.
The most recent geological period, whose shallow sediments overlie most producing basins.
A permanently charged cationic surfactant in which nitrogen carries four organic groups.
A tannin extract from quebracho bark, used as a deflocculant in high-pH and lime muds.
Used to verify whether employees understand why they are doing something, as well being able to do it, including how to perform in unusual or unexpected situations. Can be written or oral.
A crimp-on connector in which a male terminal is inserted into a female terminal to make the connection.
Calcium oxide, CaO, made by roasting limestone, and used to supply calcium ion to a lime mud.
A fast, simplified processing of newly acquired seismic data, giving an interpretable image within days rather than months.
The state of a transistor when it is properly biased and the circuit is conducting without a signal applied.
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