A u-bolt or similar device used to fasten parts of a wire cable together.

A valve that permits flow in one direction only.

If the gas or liquid starts to reverse, the valve automatically closes, preventing reverse movement.

Commonly referred to as a one-way valve.

(oil well gas) is associated and dissolved gas produced along with crude oil from oil completions.

A heavy, flanged steel fitting connected to the first string of casing.

It provides a housing for slips and packing assemblies, allows suspension of intermediate and production strings of casing, and supplies the means for the annulus to be sealed off.

Also called a spool.

The pressure at which a tube, or vessel, will catastrophically deform as a result of differential pressure acting from outside to inside of the vessel or tube.

The collapse-pressure rating of perfectly round tubing is relatively high.

However, when the tubing is even slightly oval, the differential pressure at which the tube will collapse may be significantly reduced.

This is an important factor in determining the operating limits of coiled tubing strings since the action of spooling the string tends to induce some ovality.

The equipment included in the drilling fluid circulating system of a rotary rig.

Basically, the components consist of the mud pump, rotary hose, swivel, drill stem, bit, and mud return line.

A spool-shaped attachment on a winch around which rope is wound for hoisting and pulling.

1.

A bladed or bow spring tool that helps center tools or pipe in the wellbore.

2.

A mechanical device to position casing concentrically in the wellbore.

A centralizer is usually used during cementing operations to provide a constant annular space around the casing, rather than having the casing lying eccentrically against the borehole wall.

For straight holes, bow spring centralizers are sufficient and commonly used.

For deviated wellbores, where gravitational force pulls casing to the low side of the hole, more robust solid-bladed centralizers are better if hole conditions allow their use.

see also casing centralizer, bow spring centralizer, hydraulic centralizer, rigid centralizer, screen centralizer, solid body centralizer.

An electric or hydraulic pump on an accumulator that pumps hydraulic fluid under high pressure to the blowout preventers so that they may be closed or opened.

Various earth forces acting on the formation.

Includes overburden.

An explosive charge in a tool designed to sever very heavy bha tools such as drill string collars and stabilizers.

It latterly uses a focused explosive to blown the string apart.

A tool of last resort.

The pressure at which a fracture closes.

Related to the closure forces in a formation.

Material sus 316l stainlees steel with geotona ceramic lined and nobel rubber seal.

p/n : has-09bb-d, has-09bd-d, has-09co-d, has-09cd-d, has-09dd-d, has-09dh-d, has-09eb-d,
has-09ed-d, has-09ef-d, has-09fd-d.

note: ceramic chemical analysis report, stainless steel chemical analysis report, rubber seal chemical analysis report, product certificate.

The plugs above the flow t in a subsea wellhead.

See core.