What is a whipstock in drilling?
A whipstock is a curved steel wedge which is put into the borehole to start off the drilling of a new branch. Lateral deflection of the wellbore has been achieved by placing a wedge or whipstock in the well.
What is a whipstock used for?
A long steel casing that uses an inclined plane to cause the bit to deflect from the original borehole at a slight angle. Whipstock are sometimes used in controlled directional drilling, in straightening crooked boreholes, and in sidetracking to avoid unretrieved fish.
What is whipstock system?
Designed as a one-trip system for sidetracking operations, the Cougar Drilling Solutions whipstock is an innovative product engineered to reduce the risk and cost of launching open hole sidetracks. After milling the window, the bi-mill can be tripped out of the wellbore and drilling operations can continue.
What is time drilling a sidetrack?
Sidetracking Wells is drilling a hole around unrecoverable junk, such as a stuck drill string ( Check also Pipe Sticking problem), it is necessary to place a cement plug above the junk at a required depth that will allow sufficient distance to kick off the cement plug and drill around, bypassing, the original hole and …
What is directional drilling used for?
Directional drilling is the practice of accessing an underground oil or gas reserve by drilling in a non-vertical direction. Directional drilling is also called directional boring. Directional drilling increases the efficiency of oil and gas extraction, and can also lessen the environmental impact of drilling.
What is a sidetrack well?
1. vb. [Drilling] To drill a secondary wellbore away from an original wellbore. A sidetracking operation may be done intentionally or may occur accidentally. Intentional sidetracks might bypass an unusable section of the original wellbore or explore a geologic feature nearby.
What is sidetracking in drilling?
Sidetracking is the drilling of a new lateral from an existing well that has poor or no productivity due to mechanical damage to the well or depleted hydrocarbons at that particular site.
What does sidetrack mean in oilfield?
How much money does a directional driller make?
Directional Driller Salary
| Annual Salary | Monthly Pay | |
|---|---|---|
| Top Earners | $70,500 | $5,875 |
| 75th Percentile | $60,000 | $5,000 |
| Average | $55,564 | $4,630 |
| 25th Percentile | $43,000 | $3,583 |
How much do horizontal drillers make?
While ZipRecruiter is seeing annual salaries as high as $119,000 and as low as $25,500, the majority of Horizontal Directional Driller salaries currently range between $43,500 (25th percentile) to $61,500 (75th percentile) with top earners (90th percentile) making $91,500 annually across the United States.
What are deviated wells?
Highly deviated wells may be described as those wells whose inclination exceeds 60° for most of their length. It is possible to extend directional drilling techniques to increase the inclination to 60-90°, although alterations may have to be made to drilling practices.