Contact
us / Quote
Do you want a quote?
If your requirement is for a replacement packer
elements please go to the Replace
/ Rebuild page and complete the form there.
If you require one of the ancillary piece of equipment
(eg a valve or surface equipment) please go straight to the quote request
If your requirement is for casing repair by swaging,
please read the notes on
swage repair first.
If you require a complete packer system and you have
not done this before, please review the following information before
submitting a quote request.
The following details some of the factors that affect
inflatable packer design. Although not all of this information is
always required the more that can be provided, the quicker we can
respond and the better the solution we’ll be able to offer.
- Hole size – and included
in this is any restrictions of diameter through which the packer
must run. Obviously this is fundamental to sizing of the packer
and to determining (along with pressure rating) the reinforcement
required in the rubber element.
- Operating depth – In a fluid
filled hole, the operating or setting depth of the packer is significant
in determining surface pressure requirements for a gas inflation
system. It is also significant for determining ancillary equipment
requirements e.g. the length of inflation hose required. In deep,
deviated wells this may also have a bearing on the rubber type
chosen for the element.
- Fluid level in the hole(SWL) – This
is significant for liquid inflated packers where there exists the
possibility that a packer won’t be able to deflate back through
the inflation hose if the head of liquid in the hose significantly
exceeds the SWL. In this case, alternate arrangements must be made
for deflation.
- Differential pressure rating – this
is fundamental to the packer’s design and construction but
to be useful it must be specified in conjunction with the maximum
hole diameter for the required pressure. The direction in which
the differential pressure acts may also be important in certain
circumstances.
- Borehole fluid conditions – specifically,
the type and condition of the fluids which are either in the hole
or are to be introduced into the hole. The main items of concern
are potential temperature and chemical effects on the rubber and
metal parts of the packer.
- Borehole conditions – including
whether or not the packer is to be set in open-hole or in casing.
If in open-hole then any characteristics of the ground conditions
that may be adverse to the packer’s setting should be investigated.
For example, setting gas inflated fixed end packers in soft clays
is not to be recommended.
- Deployment method – There
are several possible deployment methods for inflatable packers,
including pipe, wireline, hose and pump-down. Each of these obviously
has it’s own special requirements and thus the proposed deployment
method must be determined.
- Inflation method – As with
deployment there are several possible inflation methods available,
(e.g. small bore tube, through the string, via a straddle packer
system, etc) as well as a number of choices of inflation fluid
e.g. gas (which one?), water, mud, brine, cement, epoxy, etc. As
previously there are special considerations and requirements for
each case and early identification of the customer’s intentions
is essential.
Depending on the application and, to some extent,
the Customer, some of these criteria may be irrelevant but in order
to make that decision it is necessary to at least briefly consider
them. The bottom line is that the more information that can be gained
for any particular quotation the more likely it is that a successful
quotation will be submitted. We look forward to receiving your
request for a quote. Thank
You. |