Image based system for drilling operations

1. A drilling rig site comprising:

at least one tubular configured to be inserted into a wellbore at the drilling rig;

at least one imaging device configured to detect a location of an end of the at least one tubular or a feature of the at least one tubular; and

a processor receiving an input from the at least one imaging device and configured to calculate a distance between the end of the at least one tubular and a second end of the at least one tubular,

wherein the processor is configured to determine a hook load based in part on the calculated distance.

2. The system of claim 1 , wherein the imaging device is a camera, a video camera, an ultrasonic imaging device, an electromagnetic imaging device, a thermal imaging device, a laser range finder, or triangulation device.

3. The system of claim 1 , wherein the imaging device is configured to capture multiple images over time and wherein the processor is configured to calculate the hook load of the at least one tubular based on each image.

4. The system of claim 1 , wherein the processor is connected to one or more control systems configured to control the operation of an iron roughneck, a top drive, drawwork, or rotary table to drive the at least one tubular based on the calculation.

5. A method for completing a drilling operation at a rig site, comprising:

capturing an image of a tubular at a rig site, the tubular configured to be inserted into a wellbore at the rig site;

detecting a location of an end of the tubular or a feature of the tubular from the image;

calculating a distance between the detected end of the tubular and a second end of the tubular;

attaching the tubular to a drive device, wherein the calculated distance comprises a first length of the tubular attached to the drive device;

joining the tubular to a second tubular held in a fixed position in a wellbore by a casing slip;

releasing the second tubular from the casing slip;

re-capturing an image of the tubular attached to the drive device after it is attached to the second tubular and after the second tubular is released;

determining a second length of the tubular from the re-captured image;

determining a change between the first length and the second length of the tubular; and

calculating a hook load of the wellbore system based on the change between the first length and the second length of the tubular.

6. The method of claim 5 , wherein the drive device comprises a kelly drive or a top drive.

7. The method of claim 5 , further comprising:

calculating a total length of a drill string including the first tubular and the second tubular;

determining a drilled depth based on the calculated total length; and

completing the wellbore in a reservoir section based on the determined drilled depth.

8. The method of claim 5 , further comprising detecting a property of threads of the tubular.

9. The method of claim 5 , further comprising capturing successive images of the tubular over time, and detecting changes in the tubular from the successive images.

10. The method of claim 9 , further comprising detecting vibrations in the tubular based on the successive images, and adjusting torque and/or rotational speed to the tubular based on the detected vibrations.

11. The method of claim 9 , further comprising determining, from the successive images, a rotational speed at which the tubular is moving.