La description
the select test valve is used in the cased hole . the select valave
is operated by the annulus pressure. it can lock the ball valve at
any stage of the testing. And the ball valve can be locked at the
open position. it can be shifted from lock stage and standard model
freely.
Structure:
the select testing valve was formed by four parts: ball valve
mechanism, up hydralic part, nitrogen power mechanism and oil
metering part
power case and selector work together to realize standard model and
lock model
spring finger can prevent the tools acting early cased by fluid
fluction
nitrogen power mechnism gets more power when the pressure
increasing. After the pressure was discharged , the tools can be
operated also.
oil chamber mechanism delays the nitrogen pressure and nitrogen
discharge, it ensures the the reliabilty of the open and close of
the well
the metering case can be selected by differnt delay time
operation:
 Standard model:Apply operation pressure to open the well ,
discharge pressure to close the well
lock model:Â Apply operation pressure to open the well ,
discharge pressure to lock open well statu.
Apply operation pressure again, discharge pressure to close the
well.
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| Pays: |
China |
| N ° de modèle: |
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(Negotiable)
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