1. An integrated fiber optic cable for a wellsite having a tubing positionable in a wellbore extending into a subterranean formation, the fiber optic cable comprising:
a tubular housing having at least one of either an internal longitudinal channel or a plurality of external longitudinal slots, the tubular housing positionable into the wellbore adjacent the tubing;
a plurality of optical fibers floatingly positionable in at least one of said channel or slots for measuring at least one first wellsite parameter; and
a plurality of optical fibers fixedly positionable in at least one of said channel or slots for measuring at least one second wellsite parameter.
2. The integrated fiber optic cable of claim 1, wherein said housing has an internal channel and external slots and wherein said floating fibers are disposed in said channel and said fixed fibers are disposed in said slots.
3. The integrated fiber optic cable of claim 1, wherein the tubular housing has at least one flat surface positionable adjacent the tubing whereby an orientation of the tubular housing against the tubing is maintained.
4. The integrated fiber optic cable of claim 1, wherein at least one of the plurality of floating optical fibers is coupled to a sensor for measuring the at least one wellsite parameter.
5. The integrated fiber optic cable of claim 1, wherein pairs of the plurality of fixed optical fibers and the plurality of floating optical fibers are selectively coupled whereby an optical loop is formed for transmitting therebetween.
6. The integrated fiber optic cable according to claim 1, wherein the plurality of fixed optical fibers measure at least one wellsite parameter using one of Stimulated Brillouin techniques, Fiber Bragg Gratings, DAS measurements and combinations thereof.
7. The integrated fiber optic cable of claim 1, wherein the floating optical fibers are disposed in a gel and the fixed optical fibers are adhered to the housing.
8. The integrated fiber optic cable of claim 1, wherein the first and second wellsite parameters are selected from the group consisting of pressure, temperature, acoustics, curvature, bend, strain and combinations thereof.
9. A fiber optic monitoring system for a wellsite, the fiber optic cable comprising:
a tubular housing having at least one of either an internal longitudinal channel or a plurality of external longitudinal slots, the tubular housing positionable at the wellsite;
a plurality of optical fibers floatingly positionable in at least one of said channel or slots for measuring at least one first wellsite parameter;
a plurality of optical fibers fixedly positionable in at least one of said channel or slots for measuring at least one second wellsite parameter; and
at least one surface interrogation unit operatively couplable to the fiber optic cable for sending optical signals into at least one of said floating and fixed optical fibers and receiving a return signal indicative of a measured wellsite parameter.
10. The integrated fiber optic monitoring system of claim 9, further comprising a plurality of splices for selectively splicing together pairs of the plurality of fixed optical fibers and the plurality of floating optical fibers.
11. A method of monitoring a wellsite, the method comprising:
a) positioning a fiber optic cable at the wellsite , the fiber optic cable comprising:
a tubular housing having at least one of either an internal longitudinal channel or a plurality of external longitudinal slots, the tubular housing positionable at the wellsite;
a plurality of optical fibers floatingly positionable in at least one of said channel or slots for measuring at least one first wellsite parameter;
a plurality of optical fibers fixedly positionable in at least one of said channel or slots for measuring at least one second wellsite parameter;
b) measuring at least one wellsite parameter by sending optical signals into at least one of said floating and fixed optical fibers and receiving a return signal indicative of a measured wellsite parameter; and
c) transmitting the measured wellsite parameter to a surface interrogation unit.
12. The method of claim 11, wherein the fiber optic cable includes an optical loop formed by selectively splicing pairs of the plurality of fixed optical fibers and the plurality of floating optical fibers.
13. The method of claim 11, further comprising determining a shape of the cable from the measured wellsite parameter.
14. The method of claim 11, wherein the fixed optical fibers and the floating optical fibers have different sensitivities to different types of acoustic modes and waves, further comprising the step of comparing the measurements taken by fixed optical fibers and the floating optical fibers.
15. The method of claim 11, further including the step of interrogating the fixed optical fibers and the floating optical fibers simultaneously, decoupling the optical signals received as a result of the interrogation, and using the decoupled signals to obtain a seismic profile.
16. The method of claim 11, further including the step of performing distributed acoustic sensing using one of the fixed fibers.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. Apparatus for determining the relative timing of a sequence of images and associated information, including in combination:
a). means for receiving image information conveying a plurality of images,
b). in response to said images means for identifying image mutual events in images of said image information,
c). means for receiving associated information,
d). in response to said associated information means for identifying associated mutual events in said associated information,
e). means for comparing said image mutual events and said associated mutual events to determine the relative timing therebetween.
2. The apparatus of claim 1 wherein said means for receiving associated information compromise means for receiving audio information.
3. The apparatus of claim 1 wherein the video mutual events are chosen from the group consisting of brightness, luminance, and chroma mutual events.
4. The apparatus of claim 1 wherein the means of receiving image information is chosen from the group consisting of video, video files, video clips, and video data.
5. The apparatus of claim 1 wherein the means for identifying image mutual events in images of said image information comprising generating mutual events by one or more of brightness changes within particular regions, changes in video signal envelope, changes in frequency of the video signal, and changes in the energy content of the video signal.
6. The apparatus of claim 1 wherein the means for identifying associated mutual events in said associated information and the means for comparing image mutual events and associated mutual events to determine the relative timing therebetween correlates the number of mutual events a time period to provide a measure of the synchronization between video signal and the associated signal.
7. The apparatus of claim 2 wherein the audio mutual event is a change of at least 30 percent in the audio envelope.
8. Apparatus for determining the relative timing of a video signal conveying a plurality of images and an associated audio signal comprising in combination:
a). means for receiving said video signal;
b). means in response to said video signal for identifying image mutual events in said images;
c). means for receiving said associated audio signal;
d). means in response to said audio signal identifying audio mutual events;
e). means for comparing said image mutual events and said audio mutual events to determine relative timing therebetween.
9. The apparatus of claim 8 wherein the video mutual events are chosen from the group consisting of brightness, luminance, and chroma mutual events.
10. The apparatus of claim 8 wherein the means of receiving image information is chosen from the group consisting of video, video files, video clips, and video data.
11. The apparatus of claim 8 wherein the means for identifying image mutual events in images of said image information comprising generating mutual events by one or more of brightness changes within particular regions, changes in video signal envelope, changes in frequency of the video signal, and changes in the energy content of the video signal.
12. The apparatus of claim 8 wherein the means for identifying audio mutual events in said associated information and the means for comparing image mutual events and audio mutual events to determine the relative timing therebetween correlates the number of mutual events a time period to provide a measure of the synchronization between video signal and the associated signal.
13. The apparatus of claim 8 wherein the audio mutual event is a change of at least 30 percent in the audio envelope.
14. A method for determining the relative timing of a sequence of images and associated information comprising the steps of:
a). receiving image information conveying a plurality of images,
b). identifying image mutual events in images of said image information,
c). receiving associated information,
d). identifying associated mutual events in said associated information,
e). comparing said image mutual events and said associated mutual events to determine the relative timing therebetween.
15. The method of claim 14 wherein said means for receiving associated information compromise means for receiving audio information.
16. The method of claim 14 wherein the video mutual events are chosen from the group consisting of brightness, luminance, and chroma mutual events.
17. The method of claim 14 wherein the means of receiving image information is chosen from the group consisting of video, video files, video clips, and video data.
18. The method of claim 14 wherein the means for identifying image mutual events in images of said image information comprising generating mutual events by one or more of brightness changes within particular regions, changes in video signal envelope, changes in frequency of the video signal, and changes in the energy content of the video signal.
19. The method of claim 14 wherein the means for identifying associated mutual events in said associated information and the means for comparing image mutual events and associated mutual events to determine the relative timing therebetween correlates the number of mutual events in a time period to provide a measure of the synchronization between video signal and the associated signal.
20. The method of claim 15 wherein the audio mutual event is a change of at least 30 percent in the audio envelope.
21. The method of claim 15 comprising receiving audio information as associated information.
22. A method for determining the relative timing of a video signal conveying a plurality of images and an associated audio signal comprising in combination:
a). receiving said video signal;
b). identifying video mutual events in images of said video signal;
c). receiving said associated audio signal;
d). identifying audio mutual events in said audio signal; and
e). comparing said video mutual events and said audio mutual events to determine the relative timing therebetween.
23. The method of claim 22 wherein said means for receiving associated information compromise means for receiving audio information.
24. The method of claim 22 wherein the video mutual events are chosen from the group consisting of brightness, luminance, and chroma mutual events.
25. The method of claim 22 wherein the means of receiving image information is chosen from the group consisting of video, video files, video clips, and video data.
26. The method of claim 22 wherein the means for identifying image mutual events in images of said image information comprising generating mutual events by one or more of brightness changes within particular regions, changes in video signal envelope, changes in frequency of the video signal, and changes in the energy content of the video signal.
27. The method of claim 22 wherein the means for identifying associated mutual events in said associated information and the means for comparing image mutual events and associated mutual events to determine the relative timing therebetween correlates the number of mutual events a time period to provide a measure of the synchronization between video signal and the associated signal.
28. The method of claim 23 wherein the audio mutual event is a change of at least 30 percent in the audio envelope.
29. A method for synchronizing a video signal conveying a plurality of images and an associated audio signal, said method comprising:
a). receiving said video signal;
b). searching for a face in a frame of the video signal;
c). if a face is not found in the frame, going to a next frame;
d). if a face is found, detecting a lip in the face, and marking the face and lip contour in the frame;
b). identifying video mutual events in images of said video signal;
c). receiving said associated audio signal;
d). identifying audio mutual events in said audio signal; and
e). comparing said video mutual events and said audio mutual events to determine the relative timing therebetween.
30. The method of claim 29 wherein detecting a lip in the face, and marking the face and lip contour in the frame comprises
a). selecting a first area of the face that includes a portion of an eye and of the lips;
b). vertically flipping the selected area and calculating a correlation of the area and areas on the opposite side of the face;
c). selecting a second area on the opposite side of the face that has the highest correlation with the first area;
d). defining a search area for the lips;
e). isolate the lips; and
f). determine the curl of the lips.
31. The method of claim 30 comprising correlating a sequence of lip curls with words to identify video mutual events in the images of the video signal.
32. A program product comprising a storage medium carrying program code for a method of synchronizing a video signal conveying a plurality of images and an associated audio signal, said method comprising:
a). receiving said video signal;
b). searching for a face in a frame of the video signal;
c). if a face is not found in the frame, going to a next frame;
d). if a face is found, detecting a lip in the face, and marking the face and lip contour in the frame;
b). identifying video mutual events in images of said video signal;
c). receiving said associated audio signal;
d). identifying audio mutual events in said audio signal; and
e). comparing said video mutual events and said audio mutual events to determine the relative timing therebetween.
33. The program product of claim 32 wherein detecting a lip in the face, and marking the face and lip contour in the frame comprises
a). selecting a first area of the face that includes a portion of an eye and of the lips;
b). vertically flipping the selected area and calculating a correlation of the area and areas on the opposite side of the face;
c). selecting a second area on the opposite side of the face that has the highest correlation with the first area;
d). defining a search area for the lips;
e). isolate the lips; and
f). determine the curl of the lips.
34. The program product of claim 33 wherein the method comprises correlating a sequence of lip curls with words to identify video mutual events in the images of the video signal.