Q

Quadrant Bearing
SEE: Bearing.

Quadratic Method
A borehole survey calculation method. In modeling a wellbore as a curve, it is a method in mathmatical modeling. The projections into three vertical planes are quadratic functions.

Qualified Part
A part manufactured under an authorized quality assurance program and, in the case of replacement, produced to meet or exceed the performance of the original part.

Qualifying Well
SEE: OCS Qualifying Well.

Quality
Conformance to specified requirements.

Quality Assurance
Those planned, systematic, and preventive actions which are required to ensure that materials, products, or services will meet specified requirements.

Quality Control
Inspection, test, or examination to ensure that materials, products, or services conform to specified requirements.

Quality Program
An established documented system to ensure quality.

Quarter Quarter Quarter Quarter Section Identifier Identifies A Subdivision Of A Quarter Quarter Section Divided Through Its Center, Which Is Generally 2.5 Acres In Area. A Quarter Of A Quarter Quarter Section Refers To A 1/256th Of A Section.

Quarter Quarter Quarter Section Identifier
Identifies a subdivision of a quarter quarter section divided through its center, which is generally ten acreas in area. A quarter of a quarter quarter section refers to one-sixty-fourthth of a section.

Quarter Quarter Section Identifier
The quarter-quarter area within a quarter section divided through its center. A quarter of a quarter section refers to one sixteenth of a section.

Quarter Quarter Spot Location
The geographic location within a section of the Congressional Survey. This value defines a portion of a Section. Each section is divided into quarters (SE, SW, NE, NW). Each quarter can also be quartered and can be quartered again. The final division equals a ten acre parcel. Any of these divisions can then be halved or centered creating a spot which can be used in locating a well.

Quarter Section Identifier
A quarter section identifies a 160 acre area within a section. The quarter section is one-fourth of each section divided north to south and east to west through its center.

Quarter Unit
Quarter unit (Canadian).

Quebracho
A drilling fluid additive used for thinning or dispersing to control viscosity and thixotropy. It is a crystalline extract of the quebracho tree consisting essentially of tannic acid.

Quick Union
A union with coarse threads that employs an O-Ring seal for a quick lock.