Measuring and testing – Borehole or drilling – Fluid flow measuring or fluid analysis
Patent
1996-05-24
1997-08-26
Brock, Michael
Measuring and testing
Borehole or drilling
Fluid flow measuring or fluid analysis
7315231, 7315233, E21B 4710
Patent
active
056612362
ABSTRACT:
A production logging tool includes a plurality of pads affixed on a log tool so that the pads are located on the outer periphery of the well and are directed toward the borehole center. In the preferred embodiment, eight pads are used, with two groups of four pads, each group is spaced apart on the production log tool. Each set of four includes two pairs spaced opposite each other, all four being placed at ninety degree intervals along the circumference of the wellbore. The second set of four pads are also placed at ninety degree intervals along the circumference of the wellbore, however, the group of pads for the second set are displaced forty-five degrees along the circumference of the wellbore from the group of pads for the first set. Each pad contains two hot wire anemometers for temperature measurement, a capacitor plate and an ultrasonic transducer pointed toward reflective plates mounted on the center of the production log tool. The present invention may also include orientation measuring devices, pressure measuring devices, centralizing equipment, etc. as included in many types of prior art tools.
REFERENCES:
patent: 3076334 (1963-02-01), Wiley
patent: 3246145 (1966-04-01), Higgins
patent: 3511334 (1970-05-01), Zemanek, Jr.
patent: 4215567 (1980-08-01), Vlcek
patent: 4571693 (1986-02-01), Birchak et al.
patent: 4754839 (1988-07-01), Gold et al.
patent: 5509474 (1996-04-01), Cooke, Jr.
patent: 5551287 (1996-09-01), Maute et al.
Branagan, Paul et al., Tests Show Production Logging Problems in Horizontal Gas Wells, Jan. 10, 1994, Oil & Gas Journal, pp. 41-45.
Hill, A. D. et al., Production Logging Tool Behavior in Two-Phase Inclined Flow, Oct. 1982 Jrnl. of Pet. Tech., pp. 2432-2440.
Kelman, J. S., Biphasic Fluid Studies for Production Logging in Large-Diameter Deviated Wells, Nov. '93, The Log Analyst pp. 6-10.
Ding, Z. X., A Comparison of Predictive Oil/Water Holdup Models For Production Log Interpretation in Vertical and Deviated Wellbores, Jun. 19-22, 1994, SPWLA Logging Symposium, pp. 1-18.
Zhu, Ding et al., The Effect of Flow from Perforations on Two-Flow: Implications for Production Logging, Oct. '88, Society of Petroleum Engineers, pp. 267-275.
Brock Michael
Furr Jr. Robert B.
Keen Malcolm D.
Mobil Oil Corporation
LandOfFree
Pad production log tool does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pad production log tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pad production log tool will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1989388