Complications during Kill Operations /14 0 votes, 0 avg 1 Created on April 07, 2023 Complications during Kill Operations 1 / 14 During a well kill operation, the choke is closed regularly because both casing and drill pipe pressures are dropping without any changes in the pump rate. What could be the cause of the reduction in pressures? Bit nozzle washout Plugged drill string Choke washout Bit nozzle has plugged 2 / 14 What is the best way to monitor for BOP annular leaks? Ask someone to look down the rotary table to check for flow Line up the flow line on the trip tank to check for flow above the stack Line up the flow line on the active system and look for possible losses There is no way to monitor leaks through the BOP 3 / 14 After the well is shut-in and the casing pressure stabilized, the decision was made to bump the float: Well Information: SIDPP = 450 psi SICP = 600 psi MACP = 1450 psi The kill operation was delayed and, while waiting, the casing pressure increased to 700 psi. If the float was bumped again, at what pressure would the float open? 550 psi 450 psi 150 psi 600 psi 4 / 14 If the slow pump pressure (SPP) is unknown after the well is shut-in on a kick, how can the Initial Circulating Pressure (ICP) be obtained? Follow a proper pump start-up and switch to the drill pipe gauge to read the ICP Use the SIDPP as the ICP Use the SICP as the ICP There is no way to get the ICP 5 / 14 What happens to BHP if the choke is closed due to a nozzle washout? BHP will increase BHP will decrease BHP will stay the same There is no way to know 6 / 14 What happens to BHP if the choke is opened due to a bit nozzle plug? BHP will increase BHP will decrease BHP will stay the same There is no way to know 7 / 14 If the pop-off valve on the pump lows while killing a well, what will happen to the surface pressures? Drill pipe pressure will decrease slowly and casing pressure will increase rapidly Drill pipe pressure will decrease rapidly and casing pressure will increase slowly Drill pipe pressure will decrease rapidly and casing pressure will decrease as well Both pressures will increase rapidly 8 / 14 If the choke is closed due to a drill string washout below the BOP, what happens to the Bottom Hole Pressure (BHP)? BHP will decresase BHP will increase BHP will stay constant There is no way to know 9 / 14 Use the information below to answer the following questions: The well is shut-in on a kick. Well Depth = 10200 ft TV / 12500 ft MD MW = 10 ppg SIDPP = 0 psi SICP = 875 psi The decision to bump the float was made: SIDPP after bumping the float = 475 psi SICP after bumping the float = 950 psi What pressure should be used to calculate the Kill Weight Mud (KWM)? 475 psi 875 psi 950 psi 400 psi 10 / 14 What happens to BHP if the choke is closed due to a drill string washout? BHP will increase BHP will decrease BHP will stay the same There is no way to know 11 / 14 What is the reason for monitoring the well above the stack on the trip tank? In case the BOP annular leaks To ensure there is not a second kick in the well To make sure there is no losses while killing the well The ensure the proper manifold pressure is keeping the annular closed 12 / 14 Kill fluid has reached the bit on the second circulation of the Driller’s Method when the drill pipe pressure starts to rise and do not respond to choke adjustments while casing pressure is going down. What could be happening? Bit nozzle pluuged The annulus of the well is packing off Bit nozzle washout Bop annular leak 13 / 14 The drill string is slowly washing out below the BOP and the choke is closed to maintain the drill pipe pressure contanst. What is happening to the BHP? BHP is increasing BHP is decreasing BHP is staying the same There is no way to know 14 / 14 Use the information below to answer the following questions: The well is shut-in on a kick. Well Depth = 8200 ft TV / 10500 ft MD MW = 11.2 ppg SIDPP = 0 psi SICP = 800 psi The decision to bump the float was made: SIDPP after bumping the float = 425 psi SICP after bumping the float = 825 psi While waiting to start the kill operation, the casing pressure increased to 900 psi. What would be the drill pipe pressure? 425 psi 0 psi 500 psi 900 psi Your score is LinkedIn Facebook Twitter VKontakte 0% Restart quiz Please rate this quiz Send feedback
