How to Calculate the Distance between the Real Well Path and Planned Well Path? 1

[Marior87]

Hi Everyone!

I was wondering how can I calculate the distance between a certain point in the real well path and the planned well path. Frequently the directional drilling contractor reports a distance ¨Center to Center¨ between the real and planned well path but I don´t know how their software calculates that. They also reports ¨distance above/below¨ and ¨distance right/left¨.

I have tried the formula of distance in 3D space (SQRT(DX^2+DY^2+DZ^2)) and calculating a ¨plane¨ that pass between two points in the planned well path and calculate the distance between that plane and the survey station point (in many points in order to find the minimum value) but it didn´t work...

Probably it needs some kind of iterative calculation, I just need the theory...

Thanks in advance for your help!

 

[LittleInch]

Why don't you just take a cross section plane and the forget the z term?

Not sure why you want to know this.

My motto: Learn something new every day

Also: There's usually a good reason why everyone does it that way

 

[Artisi]

Is this of any use:

http://www.makinhole.com/hole_deviation.htm

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)

 

[Marior87]

Thanks everyone!

Artisi that link was everything I needed...

LittleInch thanks for your interest, I want that because I don´t like to work with something and don´t know what it exactly is...

I really Appreciate your help! Thanks!