4ft 6ft 8ft Lightweight Lubricator Wireline And Slickline Tools
I. Introduction
lubricators are designed to act as a pressure chamber used to
either deploy
or recover tools from the wellbore
whilst under pressure. There are three different lubricators
manufactured by Hunting; integral single piece versions for
working pressures of 15K, conventional multi part assemblies,
and lightweight for 10K working pressures.
Lightweight Lubricators use specially designed quick union
connections,
however, this does not define the lubricator as lightweight. It is
the use
of a high strength Corrosion Resistant Alloy (CRA) as the main tube
that
greatly reduces the weight of the assembly due to the reduced wall
thickness compared to thick walled carbon steel lubricators.
Hunting also supply Lightweight Lubricators with traditional Otis
or
Bowen quick union connections should the client require, but with
the
advantage of the CRA lightweight tube.
The Lightweight Lubricator threaded connections where the CRA tube
is attached to the quick union end subs have a metal to metal
primary
seal and an elastomer o-ring as the secondary barrier. This
arrangement
keeps the secondary barrier elastomer seal in prime condition as it
is
never exposed to well fluids. Safety is also a prime consideration;
in the
event that both the primary and secondary seals fail, the
connection will
not expand and separate, maintaining structural integrity.
All lightweight lubricators have been fully temperature tested,
covering a
range from -29 to + 121°C.
Lightweight Lubricators are supplied in standard lengths of 4ft,
6ft, 8ft,
10ft and 12ft although bespoke lengths have been supplied to match
customer requests, and can be supplied with ports if required,
being
placed in the quick union connection end sub and not the CRA tube.
II. General Technical Parameters
OTIS Quick Union
Bore | Work Pressure | Service | Connection | Seal Dia. |
2.5＂ | 5K 10K | Std H2S | 5＂-4ACME | 3.5＂ |
3＂ | 5K | H2S | 5＂-4ACME | 3.5＂ |
3＂ | 10K | Std | 5＂-4ACME | 3.5＂ |
3＂ | 10K | Std H2S | 5-3/4＂-4ACME | 4＂ |
2.5＂ | 15K | H2S | 5-3/4＂-4ACME | 4＂ |
4＂ | 5K 10K | Std | 6-1/2＂-4ACME | 4.75＂ |
3＂ | 15K | Std H2S | 7-1/2＂-4ACME | 5.5＂ |
5＂ | 5K | Std H2S | 8-1/4＂-4ACME | 6.188＂ |
4＂ | 10K | Std H2S | 8-3/8＂-4ACME | 5.25＂ |
5＂ | 5K 10K | Std H2S | 9＂-4ACME | 6.75＂ |
4＂ | 15K | Std H2S | 9-1/2＂-4ACME | 6.25＂ |
6.38＂ | 10K | Std H2S | 11-1/2＂-4ACME | 8.25＂ |
BOWEN Quick Union
Bore | Work Pressure | Service | Connection | Seal Dia. |
2.5＂ | 5K 10K | Std H2S | 4-3/4＂-4ACME | 3.75＂ |
3＂ | 5K 10K | Std | 4-3/4＂-4ACME | 3.75＂ |
3＂ | 5K | H2S | 4-3/4＂-4ACME | 3.75＂ |
3＂ | 5K | Std H2S | 5-1/2＂-4ACME×2 | 4.375＂ |
3＂ | 10K | Std | 5-1/2＂-4ACME×2 | 4.375＂ |
2.5＂ | 15K | Std H2S | 6-5/16＂-4ACME | 4.375＂ |
3＂ | 10K | Std H2S | 6-5/16＂-4ACME | 4.375＂ |
3＂ | 15K | Std H2S | 7＂-5STUB ACME | 4.375＂ |
4＂ | 5K | H2S | 7＂-5STUB ACME | 4.375＂ |
4＂ | 10K | H2S | 8-1/4＂-4ACME×2 | 6.0＂ |
III. Structure Features
Lubricator is mainly consist of tube, nut and slips, etc.:
Tube is the main pressure-bearing part to accommodates toolstring
inside, it’s lubricator
body part;Seal ring is installed on the quick union part to ensure
the sealing connection
of the lubricators.Nut and slips are mainly for connection
function.
IV. Pressure Test
The lubricator should be tested for compressive strength
periodically, the test pressure
is 1.5 times of the working pressure.
1. Install the test sub and test pipeline.
2. Open the test pump for the pressure test and press the pressure
to test,
holding 15 minutes and fill the test record card.
V. Maintenance
1. Replace the seals after each time usage.
2. Install with the thread protector when in storage.
