A common term for a rig weight indicator. martin-decker is the name of a company.

A mobile submersible drilling structure consisting of a barge hull that rests on bottom, steel posts that rise from the top of the barge hull, and a deck that is built on top of the posts, well above the waterline. it is used to drill wells in water no deeper than about 30-35 feet (9-10.7m). [...]

When the revenue from the produced fluids falls below the cost of operations set by the company.
each oil well has an “economic limit” to keep from losing money. the equation’s major parameters are taxes, oil price, operating costs, and royalty fraction. thus, raising
taxes on oil increases the economic limit, thereby shortening the life of the [...]

The breakdown of a compound or substance by temperature into simple substances or into constituent elements.

A tap with a gradually decreasing diameter from the top. it is used to retrieve a hollow fish such as a drill collar and is the male counterpart of a die collar. the taper tap is run into a hollow fish and rotated to cut enough threads to provide a finn grip and permit the [...]

Drilling in which the size of the hole is smaller than the conventional hole diameter for a given depth. this decrease in hole size enables the operator to run smaller casing, thereby lessening the cost of completion. see miniaturized completion.

An offshore drilling rig, usually with a large hull. it has a mat or legs that are lowered to the sea-floor and a main deck that is raised above the surface of the water to a distance where it will not be affected by the waves. also called a jackup drilling rig.

A floating offshore drilling unit that has pontoons and columns that when flooded cause the unit to submerge in the water to a predetermined depth. living quarters, storage space, and so forth a reassembled on the deck. semisubmersible rigs are either self-propelled or towed to a drilling site and either anchored or dynamically positioned over [...]

Determination of the relative percentages of substances, e.g., the suspended solids in a drilling fluid that pass through or are retained on a sequence of screens of decreasing mesh size. also called sieve analysis.

Having the capability of changing apparent viscosity with a change in shear rate. pseudoplastic fluids gain viscosity when subjected to a decrease in shear rate, and lose viscosity when the shear rate is increased. see shear.

The first stage of oil production in which natural reservoir drives are used to recover oil, although some form of artificial lift may be required to exploit declining reservoir drives.

A method of improved oil recovery in which chemicals dissolved in water are pumped into a reservoir through injection wells to mobilize off left behind after primary or secondary recovery and to move it toward production wells. the chemical solution includes surfactants or surfactant-forming chemicals that reduce the interfacial and capillary forces between oil and [...]

An additive used to retard undesirable chemical action in a product. it is added in small quantities to gasolines to prevent oxidation and gum formation, to lubricating oils to stop color change, and to corrosive environments to decrease corrosive action.

A mobile bottom-supported offshore drilling structure with columnar or open-truss legs that support the deck and hull. when positioned over the drilling site, the bottoms of the legs rest on the seafloor. a jackup rig is towed or propelled to a location w

An opening into a tank, usually through the top deck.