The annulus of an oil well or water well is any void between any piping, tubing or casing and the piping, tubing, or casing immediately surrounding it...
3 KB (391 words) - 18:58, 1 January 2024
Look up annulus in Wiktionary, the free dictionary. Annulus (or anulus) or annular indicates a ring- or donut-shaped area or structure. It may refer to:...
2 KB (241 words) - 18:06, 30 December 2022
shaped like a ring or a hardware washer. The word "annulus" is borrowed from the Latin word anulus or annulus meaning 'little ring'. The adjectival form is...
4 KB (567 words) - 07:43, 13 February 2024
Mitral valve (redirect from Mitral annulus)
ring known as the mitral annulus.[citation needed] The anterior cusp attaches to one third of the circumverence of the annulus, and the posterior cusp...
20 KB (2,337 words) - 21:31, 18 July 2024
the formation pressure and the HSP in the annulus when a kick occurs. The pressures encountered in the annulus can be estimated using the following mathematical...
40 KB (5,641 words) - 15:41, 5 August 2024
constructed casing seal, contaminated fluid can travel into the well through the casing annulus. Centering devices are important (usually one per length of...
48 KB (6,094 words) - 16:12, 27 May 2024
weight of brine on either side. To protect well integrity, each annulus will have a Maximum Allowable Annulus Surface Pressure. This refers to the integrity...
3 KB (373 words) - 04:49, 24 February 2023
formation fluids to enter the annulus uncontrollably. The drill string to which the bit is attached is gradually lengthened as the well gets deeper by screwing...
38 KB (5,193 words) - 09:04, 27 May 2024
often the tidiest way of making a planned well kill. It involves pumping kill fluid down the 'A' annulus of the well, through a point of communication between...
10 KB (1,530 words) - 07:11, 22 March 2024
the annulus ring, eventually rupturing the sporangial wall by ripping apart thin-walled lip cells on the opposite side of the sporangium. The annulus slowly...
4 KB (499 words) - 16:48, 2 December 2023
natural gas, and/or water) can begin to flow into the wellbore and up the annulus (the space between the outside of the drill string and the wall of the...
46 KB (4,771 words) - 18:25, 13 May 2024
mathematics, the annulus theorem (formerly called the annulus conjecture) states roughly that the region between two well-behaved spheres is an annulus. It is closely...
6 KB (671 words) - 06:14, 12 January 2024
and the 'A' annulus. They are often used in multiple reservoir wells to regulate flow to and from the zones. The packer isolates the annulus between the...
22 KB (3,309 words) - 12:47, 13 February 2024
Casing (borehole) (redirect from Casing (oil well))
tubing is therefore installed inside the last casing string and the tubing annulus is usually sealed at the bottom of the tubing by a packer. Tubing is easier...
10 KB (1,282 words) - 17:50, 19 June 2024
z ) {\displaystyle f(z)} will then be valid anywhere inside the annulus. The annulus is shown in red in the figure on the right, along with an example...
16 KB (2,710 words) - 16:18, 14 August 2024
Cardiac skeleton (redirect from Aortic annulus)
The right fibrous ring is known as the annulus fibrosus dexter cordis, and the left is known as the annulus fibrosus sinister cordis. The right fibrous...
13 KB (1,529 words) - 17:26, 6 July 2024
Drilling fluid (redirect from Well drilling fluid)
regions of the annulus. Increased rotation speed is one of the best methods for increasing hole cleaning in high-angle and horizontal wells. One of the functions...
34 KB (4,505 words) - 16:52, 26 July 2024
Blowout preventer (category Oil wells)
the annulus to stop the flow of fluids out of the wellbore. Denser mud is then circulated into the wellbore down the drill string, up the annulus and...
32 KB (4,243 words) - 01:36, 23 March 2024
the pipe and annulus. Atmospheric pressure can be omitted since it works the same on both columns. If the fluid in both the pipe and annulus are of the...
26 KB (4,155 words) - 11:55, 4 July 2023
MAASP (category Oil wells)
Maximum Allowable Annulus Surface Pressure is an absolute upper limit for the pressure in the annulus of an oil and gas well as measured at the wellhead...
3 KB (465 words) - 23:21, 24 March 2024
Pumpjack (section Water well pumpjacks)
perforations. As the gas-laden fluid enters the well bore through the perforations, the gas bubbles up the annulus (the space between the casing and the tubing)...
10 KB (1,513 words) - 01:05, 13 June 2024
Fossa ovalis (heart) (redirect from Annulus ovalis)
completely asymptomatic, or may require surgery. The limbus of fossa ovalis (annulus ovalis) is the prominent oval margin of the fossa ovalis in the right atrium...
7 KB (907 words) - 15:30, 18 January 2024
{bh^{3}}{12}}+{\frac {hb^{3}}{12}}={\frac {bh}{12}}\left(b^{2}+h^{2}\right)} Consider an annulus whose center is at the origin, outside radius is r 2 {\displaystyle r_{2}}...
16 KB (2,736 words) - 00:04, 5 July 2024
machine gun as vehicle armament. It could be fired in semi-automatic mode as well as fully automatic. It was introduced in British service in June 1940 and...
11 KB (1,118 words) - 18:23, 10 March 2024
is transferred to the annulus, which may then develop fissures as a result. If the fissures reach the periphery of the annulus, the nuclear material can...
56 KB (6,595 words) - 10:28, 13 August 2024
Elliptic operator (redirect from Well-posed boundary conditions for elliptic systems)
solution u might not have enough derivatives for the expression Lu to be well-defined in the classical sense. The elliptic regularity theorem guarantees...
10 KB (1,499 words) - 08:41, 12 July 2024
defined as the flow of gas and/or liquid along the surface casing/casing annulus. GM is defined as a flow of gas that is detectable at the outer surface...
108 KB (12,151 words) - 12:41, 29 July 2024
jade annulus") or Héshìzhībì (Chinese: 和氏之璧) using the Classical Chinese grammatical possessive affix zhī (之) was a Bì (Chinese: 璧, "jade annulus") or...
36 KB (5,411 words) - 03:35, 26 July 2024
gilding-metal jacket. It had a plain tip and red lacquer around the primer annulus to indicate that it was standard Ball ammunition. The other was an armour...
36 KB (3,990 words) - 15:27, 16 August 2024
with the sun gear as the output, and the annulus normally locked. A series of ball detents act on the annulus to lock it, allowing power to be transmitted...
5 KB (690 words) - 00:20, 22 November 2023