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Congressional Location - usually referred to as "Township and Range", based on a government system developed to mark off vast areas of the Great Plains. "Townships" are 36 miles square, containing 36 "sections", or square miles of land. Each section contains 640 acres. Locations are given in reference to "meridians", which are north-south lines corresponding to certain longitudes on the globe, and to arbitrary "Base Lines". For example, Township 14 North, Range 23W is 23 townships west of the "Indian" meridian in Oklahoma, and 14 townships north of the base line. Section 11 is found within that township. For a complete explanation, click HERE.

Spot Location - Read this line backwards. It tells you that the well is located in the Northeast quarter of the section, and in the west half of that quarter section, then in the west half of that piece, THEN in the west half of THAT piece. Look at the "Section Grid" to plot the well location

Section Grid - The "Section Grid" square shows a small pencil mark. The mark indicates where the well is located within the 1-mile square area, called a "Section"

Operator - or driller, of this well is Grace Petroleum.

Well Name - the well is normally named for the person who owns the surface rights, such as the farmer or rancher upon whose property it sits. For example, Carrel #1-11 (the first well in section 11).

Footage Location - distance in feet to the well from the north and south sides of the section. Sometimes given in reference to the quarter-section as in the case of the Carrel #1-11. This well is located 1320 feet from the south line and 300 feet from the west line of the northeast quarter. For more on locating wells, click HERE.

Field Name - Often the field is named for the nearest town or city, but the name can be anything the discoverer of the field wishes.

Elevations - The distance above sea level at the well location. "GL" refers to "ground level" and is the height of the land above sea level. "DF" means "derrick floor", the part of the rig the crew stands on while drilling, usually 10-25 feet above GL for land rigs. "KB" is part of the rig, usually 1 foot above the DF.

API Number - A unique number assigned to all oil and gas wells by the API (American Petroleum Institute).

Spud Date - The date the well was "spudded" (began drilling)

Completion Date - The date the well started producing oil or gas commercially.

Total Depth - The depth in feet to which the well was drilled.

Producing Formation and Footage of the Completed Interval - The geologic formation the well was completed in, such as "Springer sand", "Morrow Formation", or "Wilcox". In this particular case, the Carrel #1-11 was completed in the Red Fork sand.

Completed Interval - The exact depth the well is producing from.

Inital Potential (IP) - The amounts of oil, gas , or both that the well made when completed. In the case of the Carrel, the well made 1,285 thousand cubic feet of gas per day (or 1.285 million cubic feet), plus 26 barrels of oil, and no water. These measurements were taken after the oil and gas flowed through an 11/64 inch "choke", or restrictor. The "FTP" (flowing tubing pressure, measured at the wellhead) was 950 pounds per square inch. The "GOR", or gas to oil ratio, was 49,423 units of gas to one equivalent unit of oil. A ratio this high means that the Carrel 1-11 is considered a gas well.

Casings - Metal pipe set in the newly-drilled well to stabilize it. The Carrel had 10 3/4 inch pipe set to a depth of 4873 feet. Then drilling continued with a smaller bit and 7 5/8" pipe was lowered to a depth of 11,845 feet. Then a 4 1/2" pipe was set from 11,522' to 12,903'.

Tops - A list of all the important formation tops picked in the well by the petroleum geologist.

Chronology - a highly-abbreviated summary of the drilling and completion operations on the well. A full chronology would consist of dozens of pages.

Scout Ticket Definitions/Glossary Oil On My Shoes

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Revised: 05 May 2010 23:32:12 -0400 .

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