TECHSHORE INSPECTION SERVICES : SHUT_IN PROCESS

Introduction

Shut in is the process of closing the well in a controlled manner, in case of positive kick signs are observed. Shut in well can be carried out in two ways in case of self flow. They are:-

Soft shut – in

Hard shut – in

Shut in well can be done while drilling and also at the time of tripping, when a positive kick sign is found. Shut in is carried until pressure of shut-in drill pipe pressure (SIDPP), shut-in casing pressure (SICP) get stabilize.

Soft shut-in

During the time of drilling

As the first step rotary table should be stop.
Clear the tool joint by picking up Kelly above rotary table.
As the next step mud pump should be stopped. Check if there is any self flow to the shale shaker, if there is self flow. Close the well by following steps:-
Open HCR (hydraulic control) valve or manual valve on chock line.
As the next step close blow out preventer (mostly annular preventer)
Monitor casing pressure, by gradually closing adjustable choke valve
Make pressure to stable and note SIDPP, SICP record and pit gain

During the time of tripping

As the first step tool joint should be lifted above rotary table and set drill pipe or BHA on slips.
Full opening safety valve (FOSV) should install in open position and close the valve of FOSV. After that close the well by following steps:-
Open HCR (hydraulic control) valve or manual valve on chock line.
As the next step close blow out preventer (mostly annular preventer)
Adjustable choke should be closed gradually, and note down the casing pressure.
Kelly should make up with pipe joint and FOSV should be open.
Make pressure to stabiles and note SIDPP, SICP record and pit gain

Hard shut-in

During the time of drilling

As the first step rotary table should be stop.
Clear the tool joint by picking up Kelly above rotary table.
As the next step mud pump should be stopped. Check if there is any self flow to the shale shaker, if there is self flow. Close the well by following steps:-
In this blow out preventer is closed first (mostly annular preventer)
Open HCR (hydraulic control) valve or manual valve on chock line when the choke is in fully closed condition.
Make pressure to stabilize and note SIDPP, SICP record and pit gain

During the time of tripping

As the first step tool joint should be lifted above rotary table and set drill pipe or BHA on slips.
Full opening safety valve (FOSV) should install in open position and close the valve of FOSV. After that close the well by following steps:-
Open HCR (hydraulic control) valve or manual valve on chock line.
As the next step close blow out preventer (mostly annular preventer)
Adjustable choke should be closed gradually, and note down the casing pressure.
Kelly should make up with pipe joint and FOSV should be open.
Make pressure to stable and note SIDPP, SICP record and pit gain


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