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Trip Tank and Its Importance to Well Control
Trip tank is a small tank which has a capacity of 20 – 50 bbl and its shape is tall and shallow because it can effectively detect volume changes. The trip tank system has the ability to continuously...
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Choke Line Friction – How Does It Affect Deepwater Well Control?
Choke line friction (CLF) is the frictional pressure which is generated while circulating mud through choke or kill line. For surface stack, the choke line friction is negligible because the choke line...
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Why Was This Well Control Situation Happened?
You need to watch the VDO below. It demonstrated the situation before the blowout was occurred. These are some possible root causes which contributes to this situation. Improper hole fill Lack of...
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How To Measure Choke Line Friction (CLF) for Deepwater Well Control
Choke Line Friction is one of critical figures that personnel on the rig need to know and this numbers can be determined. The procedures for the choke line friction determination are as follows; 1....
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How To Compensate Choke Line Friction For Deep Water Well Control
Choke line friction pressure will increase bottom hole pressure while circulating to kill the well therefore it must be compensated in order to maintain the bottom hole pressure relatively constant....
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Choke Line Friction Pressure as Kill Weight Mud Approaches the Surface
Choke Line Friction pressure (CLF) has directly affect on the bottom hole pressure while performing well kill operation in a deepwater operation. You may be able to circulate the kick out of the well...
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Understand about Formation Pressure in Drilling
Formation pressure is important information for well planning and operation because it impacts on several things as well control, casing design, drilling fluid program, pore pressure prediction, etc....
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Pore Pressure Evaluation While Drilling Is Important For Well Control
During a drill well on paper phase, wells might be planned based on available data from offset wells or nearby areas. This information may deviate from the actual drilling phase due to several reasons...
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Basic Understanding about Well Control with Pipe off Bottom
Well control with pipe off the bottom is one of the most serious well control situations because kick below a drillstring can create very complicated situations when compared to a normal well control....
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Shallow Gas Hazard in Well Control – Sedco 700 Shallow Gas Incident
Shallow gas is one of the most dangerous incidents in well control because you don’t have the BOP set to be able to control the well. Additionally, shallow gas always happens at the shallow depth as...
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Kick Penetration For Stripping Operation
Height of influx will increase when the drillstring penetrates a kick; therefore, hydrostatic pressure decreases and casing pressure increases in order to compensate this situation. If the casing is...
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Basic Understanding of Stripping Operation Well Control with Gas Influx
In the previous articles, we discuss about the stripping operation and techniques with non-migratable kicks as oil and water kick. This article will focus on the stripping operation with gas influx and...
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Stripping Procedure without Volumetric Control for Non-Migrating Influx
This article will teach you about the stripping procedure for non-migrating kick. This procedure is used to strip to desired depth but it won’t account for volumetric bleed therefore it is mainly...
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Stripping Procedure with Volumetric Control For Migrating Kick
With gas kick in the well, the conventional stripping method is not application because it won’t account for the gas migration and expansion; therefore, the special stripping procedure, Stripping with...
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Practical Considerations for Stripping Well Control Operation
This section will discuss some practical stand points of the stripping operation with and without volumetric control. Additionally, this will summarize some key points for both methods of stripping for...
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Stripping with Volumetric Control Steps and Example Calculations
This example demonstrates the calculations and the steps of the stripping with volumetric control so it will help you understand about what calculations required are and how to perform the stripping...
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Brine Density with Temperature Correction Calculation
Temperature has an effect on brine density so it is very critical to compensate loss of density due to temperature. Higher wellbore temperature will reduce the brine density more. The calculation...
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Determine Correct Initial Circulating Pressure (ICP)
Correct initial circulating pressure is very important for well control operation because the correct ICP figure will tell you about the balance point while circulating the influx out using Driller’s...
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Blow Through Situation in Mud Gas Separator (Well Control Equipment)
Mud leg provides hydrostatic pressure in order to prevent mud going through the separator into the rig. If the pressure in the mud gas separator exceeds hydrostatic pressure provided by mud leg, gas...
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Blow Out on The Rig Floor VDO
This short VDO will show you how fast of the kick blowing out to the surface. We don’t know detail about it why this was happened but we can learn from this incident. Always monitoring the well while...
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