In order to get the correct value of drill pipe pressure, you need to have the correct floating bumping procedure. In this section, I will show you how to bump the float correctly.
These following procedures will demonstrate you how to bump the float correctly in order to get SDPP.
Drilling personnel need to fully understand about the lag time. Lag time is time delay from pressure adjustment made on a choke valve or a choke HCR to show up on the drill pipe pressure gauge.
Does it sound confuse? Let’s me explain more about it. When you adjust a choke position, you will not be able to see changes on the drill pipe gauge right away because drilling fluid is compressible so you need to be patient and wait a little bit until you see the changes on the drill pipe gauge.
Driller’s method is one of several methods to kill the well. The main idea of driller method is to kill the well with constant bottom hole pressure. The Driller’s Method of well control requires two complete and separate circulations of drilling fluid in the well.
The first circulation removes influx with original mud weight.
When starting to bring pumps up to speed, casing pressure must be held constant until kill rate is reached. Then drillpipe pressure is held constant to maintain constant bottomhole pressure which is normally equal to, or slightly greater than pore pressure. Drillpipe pressure will be held constant until influx is removed from annulus. If the wellbore influx is gas, it will expand when it comes close to surface therefore you will see an increase in pit volume and casing pressure. Continue reading
Shut-in procedures while wireline logging operation are very critical for all drillling crew working on the rig. Learn about two vital cases of the shut-in procedures.
Two cases of shut the well in while logging with wire line are as follows;
1. Shut the well in while wireline logging through open BOP without a lubricator.
2. Shut the well in while wireline logging through open BOP with a lubricator installed in the BOP.
After you complete shut in procedure while tripping, there is following information that must be recorded before making any decision on how to kill the well.
Shut-In Casing Pressure (SICP): Read and record the shut-in casing pressure (casing gauge).
In order to get the proper pressure reading, the casing gauge should be installed upstream of the closed choke.