Drop In Type Check Valve - Chinaprice: contact company for price
controlling back flow through the drill pipe during a kick
or when tripping pipe into the hole against pressure.
The landing sub is installed in the drilling string, usually
just above the drill collars. The valve is kept on the
surface until protection from back flow is required. The
valve is introduced into the drill string and pumped down
the drill string to the landing sub where it locks into
Features: Pressure from below the landed valve energizes
the packer, lock dogs and check valve. The check valve will
open to allow circulation through the valve and
automatically close when circulation is stopped. After use,
the back pressure valve can be retrieved from the string
with the retrieval tool run in on wire line.
The landing sub body is manufactured from 4145 heat-treated
and stress relieved material. Sizes not listed available on
How to Order:Specify:
Minimum drill string I.D.
Non-Retrievable Drop-In Check Valve operates in a similar
manner as the retrievable valve, with the exception that
once the valve is landed in the sub, it is not possible to
retrieve it on wire line. The valve must be removed on the
Features: Pressure from below the landed valve energizes the
packer, lock dogs and check valve. The check valve will open
to allow circulation through the valve and automatically
close when circulation is stopped.
How to Order:
- Posted By: Mudanjiang Dongxu Machinery Co.,Ltd
- Phone: 8613614631909
- Address: Dongxu 2st, No.5, Aimin Dis, Mudanjiang , China
Published date: February 10, 2014 -
- Business Description: Mudanjiang Dongxu Machinery Co.,Ltd has been honored with API spec 7 1
certificate by America Petroleum Institute. Our factory covers an area
of 20000square meters with a very strong team of technicians and
researchers, possesses reliable production lines and advanced
Our products: drilling tools,fishing tools,coring tools, diamond core bit, milling tools and so on. Our team will manufacture from existing designs or collaborate with the customer to design and manufacture to their specifications.
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