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6363780 |
Method and system for detecting the longitudinal displacement of a drill bit
The present invention is a system and method for generating an alarm relative to effective longitudinal behavior of a drill bit fastened to the end of a drill string driven in rotation in a well by...
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5844132 |
Method and system for real-time estimation of at least one parameter linked with the behavior of a downhole tool
The present invention relates to a system and to a method designed to estimate the effective behaviour of a drill bit fastened to the end of a drill string and driven into rotation in a well by...
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5794720 |
Method of assaying downhole occurrences and conditions
A method of assaying work of an earth boring bit of a given size and design comprises the steps of drilling a hole with the bit from an initial point to a terminal point and recording the distance...
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5581024 |
Downhole depth correlation and computation apparatus and methods for combining multiple borehole measurements
The current invention is directed toward the use of a downhole computer and downhole storage within a measurement-while-drilling (MWD) downhole subassembly to process data from the response of a...
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5398546 |
Determination of drill bit rate of penetration from surface measurements
A method of determining, from surface measurements, the rate of penetration Δd of a drill bit attached to a drill string suspended from a floating drilling rig by means of a suspension system and...
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5321982 |
Method for measuring the rate of penetration of an equipment progressing in a well
The method comprises using a transmitting unit and at least two receiving units (8,10) arranged in two different places along well equipment (2). Each receiving unit forms an image or signature of...
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5274552 |
Drill string motion detection for bit depth calculation
A motion detector is incorporated on a drilling rig for detection of drill string motion. An output of the motion detector provides an enabling signal for conversion of block height data to bit...
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4961343 |
Method for determining permeability in hydrocarbon wells
During oil and gas well drilling operations, at the wellsite surface the percentage by volume of hydrocarbon gas present in the return drilling fluid is monitored in order to determine the...
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4845628 |
Method for optimization of drilling costs
Disclosed is a real-time method for minimizing the expected, controllable unit cost over a future drilling interval by simulating the values of selected operating variables and lithologies.
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4794535 |
Method for determining economic drill bit utilization
Disclosed is a real-time method for determining when a drill bit that is being used in drilling operations should be replaced, given the objective of minimizing the total expected, controllable...
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4747303 |
Method determining formation dip
The inclination and slope of a bedding plane are determined from oriented measurements of the bending moment generated as a bit encounters and passes completely through the interface between two...
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4685329 |
Assessment of drilling conditions
In a method of assessing drilling conditions during a drilling operation measurements of torque applied (TOR), weight on bit (WOB), rate of penetration (ROP), and rotation speed (ROT) are gathered....
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4627276 |
Method for measuring bit wear during drilling
A method for measuring the wear of milled tooth bits during oilwell drilling uses surface and subsurface wellsite sensors to determine averaged values of penetration rate, rotation speed and MWD...
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4419886 |
Rate of penetration sensor for oil drilling rigs
Apparatus for indicating the change in position of a travelling block coupled to a wire line which is wrapped around a drum, comprising a motion pickup device responsive to the drum for providing a...
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4389885 |
Signal generator for a penetration rate measuring apparatus
To measure the penetration rate of a drill string, a signal generator includes a friction wheel that can be engaged with the side of a drum upon which is wrapped a cable used to lower the drill...
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4367477 |
Rate of penetration recorder
An apparatus for measuring the rate of movement of one object with respect to another, such as a drilling rate recorder used to measure the rate of penetration of a drill bit during drilling...
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4138886 |
Method and apparatus to measure the rate of advance of a drilling tool on a floating drilling installation
The disclosure relates to measurement of the rate of advance of a drill bit from a floating drilling installation. The process includes joining a point of the drilling system, fixed in translation...
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4085509 |
Apparatus for compensating for the heaving of a floating drilling platform for connection with apparatus for measuring the rate of penetration of pipe run into an offshore well
Apparatus adapted to compensate for the heaving of a floating offshore drilling platform, which heaves relative to the ocean bottom due to wave action of the water in which the platform is...
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4064749 |
Method and system for determining formation porosity
A method and/or system for measuring formation porosity from drilling response. It involves measuring a number of drilling parameters and includes determination of tooth dullness as well as...
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3842507 |
RECORDING INSTRUMENT FOR DETERMINING RATE OF PENETRATION IN A BOREHOLE
A measuring instrument for monitoring the rate of penetration of a borehole comprising a shaft having a drum thereon which is turned in proportion to movement of the drill string. The shaft has an...
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3750480 |
PNEUMATIC MEASUREMENT APPARATUS
A pneumatic apparatus and method for measuring a function. Pneumatic pulses representative of the function are generated, integrated and monitored as an indication of the function. The integrated...
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3739888 |
APPARATUS FOR DRIVING A RECORDING INSTRUMENT
Mechanism for driving an odometer for logging footage drilled by an oil well drill or the like, and including a clutch driven by a measuring line, a shaft driven through the clutch, a sleeve...
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3504370 |
APPARATUS FOR MEASURING AND RECORDING THE DEPTH AND PENETRATION SPEED OF A DRILLING BIT
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3420099 |
APPARATUS FOR AND METHOD OF LOGGING EARTH FORMATIONS
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3386286 |
Hydrocarbon well logging
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3379052 |
Soil penetrometer
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3364494 |
Drilling system recorder
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3220251 |
Drilling rate recorder
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3214762 |
Pneumatic penetration recorder
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3185997 |
Pipe collar locator
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3159448 |
Recording apparatus for use with well drilling equipment
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3154367 |
Drilling rate recording
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3129997 |
Well depth recorder and associated pen return
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3117445 |
Time recorder and comparator for drilling operations
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3017770 |
Drilling rate recorder
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3013856 |
Swab penetration recorder
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3010777 |
Recorder with selective five foot marker
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3009355 |
Drilling rate recorder
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3005525 |
Recording apparatus clutch for earth bore drilling equipment
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2981102 |
Well depth recorder
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2980486 |
Recorder
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2974523 |
Depth and operation recorder for earth bore drilling rigs
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2957346 |
Drilling rate measuring apparatus
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2935871 |
Well logging apparatus
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2932190 |
Tension apparatus for a cable used with recording apparatus for earth bore drilling
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2888309 |
Memorizing system
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2883256 |
Depth recorder
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2860509 |
Recording apparatus for earth bore drilling
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2860417 |
Depth measuring apparatus
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2856692 |
Measuring and recording various well drilling operations
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