Oil Drilling Calculator – Handyman Calculator

Oil Drilling Buoyancy Factor

Waheed Akhtar — Thu, 07 Oct 2021 18:54:19 +0000

The Buoyancy Factor is a weight loss compensation factor used to adjust for immersion in drilling fluid.

You would weigh less if you stood on a scale at the bottom of a swimming pool than if you weighed yourself on dry ground. The upward force that keeps things floating is known as buoyancy. The amount of fluid weight displaced by the body volume determines the net upward buoyancy force. When things are immersed in the fluid, this force causes them to become lighter.

Buoyancy Factor Formula

Let’s learn how do you calculate buoyancy weight? Three different units are used to calculate the buoyancy factor.

Buoyancy Factor using mud weight in ppg (pounds-per-gallon)

Buoyancy Factor (BF) = (65.5 – mud weight in ppg) ÷ 65.5

The density of steel is 65.5 ppg.

Buoyancy Factor using mud weight in lb/ft3 (pounds per cubic foot)

Buoyancy Factor (BF) = (489 – mud weight in lb/ft³) ÷ 489

The density of steel is 489 lb/ft³.

Buoyancy Factor using mud weight in kg/l (kilogram per liter)

Buoyancy Factor (BF) = (7.85 – mud weight in kg/l) ÷ 7.85

7.85 kg/l is the density of steel.

Buoyancy Factor Calculator

The buoyancy factor can be calculated in ppg, lb/ft³, and kg/l using our online calculator. We offer a free offline application that allows you to calculate buoyancy factors. Using this application will increase your productivity.

Buoyancy Factor Example

Let’s assume mud weight in ppg were 60 lbs. BF = 0.084 in ppg

Buoyancy Factor Table

Here is the complete buoyancy factor table.

Other interesting online oil drilling calculators can be found here.

Oil Drilling Maximum Allowable Mud Weight

Waheed Akhtar — Thu, 23 Sep 2021 05:53:03 +0000

To answer your question, How do you calculate maximum allowable mud weight? We’ve created an online calculator to help you determine your answer. For better understanding, a formula and an example are provided.

Oil Drilling Maximum Allowable Mud Weight Calculator

The online maximum allowable mud calculator allows you to calculate the Max Mud Weight. Enter the leaf of pressure, TVD and mud weight.

The Oil Drilling Maximum Allowable Mud Weight can be calculated using this free and offline application. You can also find dozens of other useful calculators.

Maximum allowable mud weight formula

Maximum Allowable Mud Weight is estimated in pounds per gallon (ppg). The formula is

ppg= (Leak of pressure) ÷ 0.052 ÷ (TVD) + (mud weight)

Pounds per square inch (psi) is the unit of Leak of pressure.
TVD is the true vertical depth and it’s unit is feet.
The unit of mud weight is ppg.

Maximum allowable mud weight example

Let’s consider.

Leak of pressure = 1140 psi
TVD = 4000 ft
Mud Weight = 10.0 ppg

Max Mud Weight (ppg) = 1140 psi ÷ 0.052 ÷ 4000 ft + 10.0 ppg

Max Mud Weight (ppg) = 15.52

Consider other useful oil drilling calculators.

Oil Drilling Hydraulic Horsepower

Waheed Akhtar — Sun, 19 Sep 2021 08:32:23 +0000

Hydraulic horsepower (HHP) is a measurement of the amount of energy expended per unit of time across the bit nozzles. Hydraulic horsepower is a useful notion for sizing equipment and calculating operating requirements, as well as one of the two main approaches to reducing the pressure drop across bit nozzles.

Hydraulic horsepower formula

Hydraulic horsepower is calculated using the formula: HHP= (P x Q) ÷1714

P stands for pressure in pounds per square in (psi).
Q stands for flow rate in gallons per minute (gpm) and
1714 is a conversion factor necessary to yield HHP in terms of horsepower.

Fluid hydraulics energy across the bit nozzles should be in a certain HHP range, according to bit manufacturers. For example, an HHP of 2.0 to 7.0 is required to enable proper bit tooth and bottom-of-hole cleaning (the minimum HHP) and to prevent early bit erosion (the maximum HHP).

Hydraulic horsepower calculator

As we already know the formula of the hydraulic horsepower calculator is HHP= (P x Q) ÷1714. Enter the pressure and flow rate in our hydraulic horsepower calculator to find out the final HHP.

This application allows you to calculate Oil Drilling Hydraulic Horsepower for free and offline.

Example of oil drilling hydraulic horsepower

The output hydraulic horsepower of a rig-pumping system delivering 1500 GPM flow rate at 4500 pressure would be simply: 3938.156

List of our other oil drilling calculators.

Oil Drilling Formation Temperature

Waheed Akhtar — Tue, 14 Sep 2021 07:10:47 +0000

Let’s start by defining what is formation temperature? One of the most important characteristics in drilling and workover operations is formation temperature, which fluctuates depending on the true vertical depth of the wellbore.

Formation Temperature Formula

The oil drilling formation temperature formula is pretty simple.

Formation Temperature = ambient surface temperature + (true vertical depth * temperature increase)

Where:

Ambient surface temperature in F (Fahrenheit)
Temperature increase in F/ft (Fahrenheit / ft)
Formation temperature in F (Fahrenheit)
and true vertical depth in ft

Formation Temperature Calculation

Use our online oil drilling formation temperature calculator to find out the formation temperature. By the way, Our free and offline application can be used to calculate Oil Drilling Formation Temperature formulas.

Formation Temperature Example

Let’s find out the formation temperature with the help of an example. Suppose these values.

Ambient Surf. Temp(°F) =90
True Vertical Depth(ft)=12000 and
Temp.Increase=0.015

The final formation temperature is 270.0 °F

If you want to find out Annular Velocity, use our Oil Drilling Annular Velocity Calculator.

Oil Drilling Annular Velocity

Waheed Akhtar — Sun, 12 Sep 2021 17:25:15 +0000

Find out what is Oil Drilling Annular Velocity and how to calculate it. The speed at which a fluid moves in the annulus of a well-drilled using circulating drilling fluid is known as annular velocity. The speed is usually expressed in feet per minute (ft/min) or metres per minute (m/min). The abbreviation AV stands for Annular Velocity.

The size of the hole, the size of the drill pipe, and the pump rate are the three key variables that determine annular velocity.

Table Of Contents

Annular velocity drilling formula

Annular velocity drilling formula

The oil drilling annular velocity formula is pretty simple.

Annular velocity = Pump Output (Flow Rate) ÷ Annular Capacity
Where,
Pump Output in bbl/min
Annular capacity in bbl/ft

and

Annular velocity in ft/min

Oil drilling annular velocity calculator

If you are wondering, How do you calculate annular velocity? Enter the values in our online calculator and get the results. Additionally, you can download our handyman calculator app for iOS and Android devices to calculate any oil drilling formula.

Annular Velocity Example

Pump Output = 20 bbl/min
Annular capacity = 0.26 bbl/ft
AV = 20 bbl/min ÷ 0.26 bbl/ft
AV = 76.92 ft/min