What is Toolface in drilling?

1. n. [Drilling] The angle measured in a plane perpendicular to the drillstring axis that is between a reference direction on the drillstring and a fixed reference.

How is Toolface calculated?

The toolface can be found using the following formula:

1. – toolface angle, deg.
2. – azimuth change, deg;
3. The number of wedges (
4. is the angle of the blade of the wedge.
5. – length of deviation section, m (ft);
6. Input data:
7. Calculation of dogleg angle.
8. The Dogleg of the correction to reach the required direction is 6.7 deg.

What does spudded mean in drilling?

Spudding is the process of beginning to drill a well in the oil and gas industry. After the surface hole is completed, the main drill bit—which performs the task of drilling to the total depth—is inserted and this process can also be referred to as “spudding in.”

What is UBHO in drilling?

Universal Bottom Hole Orientation (UBHO) Sub. Used in a directional drilling BHA. It is often referred to as a mule. shoe sub. This device is typically run directly below a drill collar and.

What is a North Seeking Gyro?

gyrocompass, navigational instrument which makes use of a continuously driven gyroscope to accurately seek the direction of true (geographic) north. It operates by seeking an equilibrium direction under the combined effects of the force of gravity and the daily rotation of Earth.

What does Updip mean in drilling?

slope
1. prep. [Geology] Located up the slope of a dipping plane or surface. In a dipping (not flat-lying) hydrocarbon reservoir that contains gas, oil and water, the gas is updip, the gas-oil contact is downdip from the gas, and the oil-water contact is still farther downdip.

What does pitch mean in drilling?

Pitch indicates the inclination of the drilling direction relative to the horizontal plane. A 3-axis accelerometer is used to calculate the pitch and roll of the drilling bit which measures the three mutually orthogonal components of the acceleration of gravity for a stationary drill bit.