## How do you calculate static bottom hole pressure?

Static bottomhole pressure is found from Eq. (6.18) as: p ws = 450 + 63 + 560 = 1,073 psi .

**What is the hydrostatic pressure at the bottom hole?**

The bottom hole pressure (BHP) is equal to the hydrostatic pressure (HP) on the annular side. If shut in on a kick, bottom hole pressure is equal to the hydrostatic pressure in the annulus plus the casing (wellhead or surface pressure) pressure.

**How is static BHP psi calculated?**

Well Control Course Equations Part 1

- Pressure (psi) = Force (lb) / Area in Square Inch (in 2)
- Mud Gradient ( Psi/ft ) = Mud weight ( PPG) x 0.052.
- Hydrostatic Pressure (HP) = Mud weight (PPG) x 0.052 x TVD (ft)
- Bottom Hole Pressure (BHP) = Hydrostatic Pressure (HP) + Surface Pressure (SP)

### How do you calculate hydrostatic pressure?

The pressure in a liquid at a given depth is called the hydrostatic pressure. This can be calculated using the hydrostatic equation: P = rho * g * d, where P is the pressure, rho is the density of the liquid, g is gravity (9.8 m/s^2) and d is the depth (or height) of the liquid.

**How is static BHP calculated?**

Bottom Hole Pressure Relationship

- Bottom Hole Pressure (BHP) = Surface Pressure (SP) + Hydrostatic Pressure (HP)
- The first case: Hydrostatic column is water which is equal to formation pressure gradient so SP is equal to 0 psi.

**What is static bottomhole pressure?**

1. n. [Drilling] The pressure, usually measured in pounds per square inch (psi), at the bottom of the hole. This pressure may be calculated in a static, fluid-filled wellbore with the equation: BHP = MW * Depth * 0.052.

## What is static pressure on a gas well?

The pressure measured in a well after the well has been closed in for a period of time, often after 24 or 72 hours. When a reservoir is first discovered, the static pressure equals the initial pressure. After production begins, the static pressure approaches the average reservoir pressure.

**How do you calculate static water pressure?**

An example would be a 150-foot measured water height in a municipal water tower. You would divide 150-feet by 2.31 to obtain the value of static pressure at ground level of about 65-psi. This pressure turns out to be ideal for water companies supplying domestic water at constant pressure assuming flat terrain.

**How is Bottoms Up calculated?**

“Bottoms Up” Strokes = Annular Volume bbls / Pump Output in bbls-stk. The first thing we must to do in order to calculate “Bottoms Up” or Bit to Surface” strokes is to find the Annular Volume. Annular Volume bbls = (Dh^2 – OD^2) / 1029.4 x Length in feet, where Dh is the hole diameter.

### How is drilling formation pressure calculated?

The pressure is usually measured at the bottom of the hole. This pressure may be calculated in a static, fluid-filled wellbore with the equation: BHP = D × ρ × C, (or, in the English system, BHP = D × MWD × 0.052).

**How do you calculate hydrostatic pressure in a well?**

Hydrostatic pressure is calculated from mud weight and true vertical depth as follows: Hydrostatic pressure, psi = 0.052 x Mud Weight, lbm/gal x True Vertical Depth, ft. (To convert to SI units, 1.0 psi = 6.9 kPa.)

**What is bottom up in drilling?**

1. n. [Drilling] The sample obtained at the bottoms-up time or a volume of fluid to pump, as in “pump bottoms-up before drilling ahead.” 2. adj. [Drilling] Pertaining to the mud and cuttings that are calculated or measured to come from the bottom of the hole since the start of circulation.

## How do you calculate top down?

Top down and bottom up analyses are two basic ways to evaluate that market.

- A top down analysis is calculated by determining the total market, then estimating your share of that market.
- A bottom up analysis is calculated by estimating potential sales in order to determine a total sales figure.