Monday, April 10, 2017

TECHSHORE INSPECTION SERVICES :MANIFOLDS USED IN RIG

INTRODUCTION

Manifolds are used to control the flow of drilling fluids in a rig.manifolds is nothing, but combination of gate valves.by adjusting this gate valves we can adjust the pressure of fluid and also can direct the path of fluid entering and leaving the manifold.

TYPES OF MANIFOLD


MUD MANIFOLD


Mud manifold is used to control the pressure of the mud coming from the mud pump and also to give path for the mud to flow smoothly.the mud manifold consist of two inlet one from mud pump-1 and other from mud pump-2,it has to outlet also one to the discharge line and other to the kill line.if mud is used for drilling or tripping action the manifold give path to the outlet to the discharge line by closing all other valves.if the mud is used for killing of the well the manifold give path to the outlet of mud manifold to the kill line.




KILL MANIFOLD

Kill manifold is used to give pressurized or mud with heavy mud weight to the well for killing action of the well.it has an inlet to receive mud from the mud pump through mud manifold and outlet to pressurized the received mud to the well for killing purpose.the pressure and quantity of mud can be controlled by adjusting the gate valves present in the manifold.

H-MANIFOLD

As the name indicates it has a shape of english alphabet h.it is used to give mud to the well for drilling action and for circulation while tripping in and tripping out process.it has a single inlet to receive mud from mup pump through nud manifold.but it has two outlet one for giving mud to the swivel through stand pipe and other for circulating mud while tripping in and tripping out process.

CHOKE MANIFOLD
Choke manifold is used mainly during shut in process for bleeding high pressure kick mud coming from the well bore.it consist of one inlet for receiving kick mud from the choke line.if it the pressure is to high the choke line allows mud to flow through longest path through the choke manifold by adjusting the gate valves of the choke manifold.this manifold has more number of gate valves.choke manifold has two outlet for bleeding out high pressure return mud through it.the gate valve of choke manifold is of size 2 13/16”.



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