|
Match
|
Document |
Document Title |
|
|
7350410 |
System and method for measurements of depth and velocity of instrumentation within a wellbore
A survey tool for use in a wellbore includes a downhole portion having an axis. The downhole portion is adapted to move within the wellbore with the axis generally parallel to the wellbore. The...
|
|
|
6915686 |
Downhole sub for instrumentation
A downhole sub for instrumentation, such as a fiber optic sensor. The sub is configured to be connected to a string of pipe, such as a string of tubing. The sub first comprises an essentially...
|
|
|
6854535 |
Bore location system and method of calibration
A method for calibrating a pitch measurement of a horizontal underground bore location system includes providing a probe having a pitch sensor that measures deviation between a predetermined...
|
|
|
6601658 |
Control method for use with a steerable drilling system
A control method for use with a steerable drilling system comprises the steps of inputting parametric model data representative of drilling conditions and using the data to determine achievable...
|
|
|
6405136 |
Data compression method for use in wellbore and formation characterization
A method is disclosed for compressing a frame of data representing parameter values, a time at which each parameter value was recorded, and an orientation of a sensor at the time each parameter...
|
|
|
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...
|
|
|
6324904 |
Miniature pump-through sensor modules
Sensor modules are provided which are pumped into a well by first being pumped downhole within a drill string, then passing through the drill bit and being circulated uphole in the annulus between...
|
|
|
6321596 |
System and method for measuring and controlling rotation of coiled tubing
The present invention, in certain embodiments, discloses an apparatus for determining characteristics of coiled tubing that is run in and out of a bore, e.g. a wellbore, for calculating fatigue...
|
|
|
6208265 |
Electromagnetic signal pickup apparatus and method for use of same
An electromagnetic pickup apparatus (46) and method for use of the same is disclosed. The apparatus (46) comprises a probe (60) that is insertable into a bore hole (64) or a trench (70) and a...
|
|
|
5896939 |
Downhole measurement of depth
The invention is a process and method for determination of the depth of a well during the process of drilling. A computer is housed in the drilling tool and pre-programmed with the data of the...
|
|
|
5852235 |
Method and system for real-time estimation of at least one parameter linked with the displacement of a drill bit
The present invention relates to a system and to a method designed to estimate the effective displacement of a drill bit fastened to the end of a drill string and driven into rotation in a well by...
|
|
|
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...
|
|
|
5551286 |
Determination of drill bit rate of penetration from surface measurements
A method of determining the rate of penetration Δd of a drill bit at the end of a drill string while drilling a well, comprising: (a) measuring the vertical displacement S of the drill string...
|
|
|
5415030 |
Method for evaluating formations and bit conditions
A method for evaluating formations and bit conditions is presented. The present invention processes signals indicative of downhole weight on bit (WOB), downhole torque (TOR), rate of penetration...
|
|
|
4976143 |
System and method for monitoring drill bit depth
Methods and apparatus for accurately determining drill bit depth are provided. A hook load is sampled at a rate of at least 4 Hz and is compared to a low threshold to establish a slips-in...
|
|
|
4951505 |
Block position sensor
A block position sensor which is responsive to rotation of a drawworks drum for indicating change in position of a traveling block in a drilling rig is disclosed. The sensor includes elements for...
|
|
|
4876886 |
Method for detecting drilling events from measurement while drilling sensors
Downhole Torque and Rate of Penetration are utilized to develop indications of formations having high porosity or of the development of an undergauge bit. Downhole torque is normalized by dividing...
|
|
|
4852399 |
Method for determining drilling conditions while drilling
Downhole torque and rate of penetration are utilized to develop indications of formations that are porous, argillaceous or tight. This information is useful as an aid in selecting drilling...
|
|
|
4852052 |
Kelly-to-riser position determining system with adjustment for uncompensated heave
A system for determining kelly-to-riser position on floating drilling platforms is presented. The system removes (e.g. filters) uncompensated heave from surface sensor measurements so that bit...
|
|
|
4843875 |
Procedure for measuring the rate of penetration of a drill bit
The invention relates to a procedure for measuring the rate of penetration V F of a drill bit fixed to the lower end of a drill string lowered into a well. During an initial period, the well is...
|
|
|
4831871 |
Process and apparatus for calculation of the instantaneous speed of a tool
The process consists of pre-positioning conserving a reversible counter with memory (9) in the maximum state, counting the positive pulses in such state, receiving and counting the positive pulses...
|
|
|
4773263 |
Method of analyzing vibrations from a drilling bit in a borehole
Information on tooth wear is obtained from the frequency distribution spectrum of a vibrational quantity influenced by the impact of cutter teeth on the bottom of a bore. For example, spectra may...
|
|
|
4736297 |
Continuous real time drilling penetration rate recorder
An apparatus for providing a real-time monitoring and readout of the drilling progress of a rotary drilled deep well or oil well is connected to the wire of a standard wire line measurement wire...
|
|
|
4647853 |
Mud turbine tachometer
In an MWD measurement system, the speed of rotation of a downhole turbine is measured by the interaction of a triaxial magnetometer in a sensor package and a permanent magnet attached to the...
|
|
|
4616321 |
Drilling rig monitoring system
In a drilling rig of drill depth conventional structure, parameters of interest (e.g. rate of penetration and drill bit location, number of stands, monkey board position) are calculated and...
|
|
|
4610005 |
Video borehole depth measuring system
A video system measures the position of the traveling block of a drilling rig to determine borehole depth and the rate of drill bit penetration. A television camera is arranged to track the...
|
|
|
4570234 |
Oilfield monitor and recorder
An oilfield monitor and recorder system providing marker positioning using a leadscrew, a stepper motor, a position sensor, driver and control. The control provides zero, span, slew and range...
|
|
|
4512186 |
Drill rate and gas monitoring system
Method and apparatus for logging a well during drilling operations to record drilling fluid gas and rate of penetration as a function of depth. The system comprises elements for producing a...
|
|
|
4387295 |
Pneumatic penetration sensor for oil drilling
A device for accurately measuring the position of a traveling block in a drilling rig or the like which is supported by means of a cable wrapped around a drum winch assembly. A pneumatic sensor...
|
|
|
4354233 |
Rotary drill automatic control system
A system for automatic control of a rotary drill comprises a unit for computing the value of drilling tool penetration per single revolution, said unit connected with its inputs to respective...
|
|
|
4195699 |
Drilling optimization searching and control method
A searching method for optimizing the rate of penetration of a drill into a given medium based upon the two drilling parameters of thrust and speed of revolution. Preset base values of both...
|
|
|
4156467 |
Well drilling system
In a well drilling system, a drill bit is raised or lowered through formations surrounding a borehole in response to the movement of a cable onto and off of a drawworks drum. Magnetic markings are...
|
|
|
4099410 |
Rate of penetration recorder
A latching control circuit for a rate of penetration recorder providing an output indication in response to the vertically downward movement of a drilling swivel a predetermined penetration distance.
|
|
|
3982432 |
Well monitoring and analyzing system
Described is a system for automatically recording information about the physical condition, content and location of earth formations penetrated during drilling of a well, the rate of drilling the...
|
|
|
3931735 |
Methods and apparatus for measuring the rate of penetration in well drilling from floating platforms
New and improved methods and apparatus exemplifying the present invention are disclosed herein for measuring the changes in total elongation of a drill string due to variations in the tensional...
|
|
|
3916684 |
Method and apparatus for developing a surface well-drilling log
Method or system for developing a surface drilling log indicative of one or more parameters of the formation being drilled. Measurements include the bit revolutions, the depth of the bit in the...
|
|
|
3898880 |
Electronic supervisory monitoring method for drilling wells
An electronic supervisory control system is disclosed herein wherein rotary power, rotary speed, bit weight, hole size, penetration rate and mud weight ratio are utilized in conjunction with analog...
|
|
|
3891039 |
Method and device for drilling to a predetermined surface
A method and a device for rock-drilling and/or earth boring of a number of drill-holes to a predetermined bottom surface are disclosed in which a reference surface defined by electro-magnetic...
|
|
|
3891038 |
Device for measuring the position and speed of a boring tool
Device making it possible to know, at the time of boring an oil well at sea, the depth of the hole, the position of the tool and its advancing speed; these characteristics are calculated according...
|
|
|
3881695 |
Device for measuring the rate of penetration of the drill bit during drilling operations performed from a floating installation
This device comprises means for detecting the instantaneous position of the drill pipe relative to the floating installation, said means generating a first signal representative of this position....
|
|
|
3876016 |
Method and system for determining the position of an acoustic generator in a borehole
The specification discloses a method and system for determining the position of a drill bit employed in drilling a borehole in the formations through employment of an acoustic vibration oscillator...
|
|
|
3853004 |
METHODS AND SYSTEMS FOR MEASURING, DISPLAYING AND RECORDING TIME-RATE OF PENETRATION
The provision of means to measure, display and record the rate of a boring bit penetration during a drilling process by measuring the movement of the bit supporting cable and interpreting said...
|
|
|
3785202 |
ELECTRONIC SUPERVISORY CONTROL SYSTEM FOR DRILLING WELLS
An electronic supervisory control system is disclosed herein wherein rotary power, rotary speed, bit weight, hole size, penetration rate and mud weight ratio are utilized in conjunction with analog...
|
|
|
3777560 |
METHODS AND APPARATUS FOR MEASURING THE RATE OF PENETRATION IN WELL DRILLING
New and improved methods and apparatus exemplifying the present invention are disclosed herein for measuring at the surface the changes in total elongation of a drill string due to variations in...
|
|
|
3761701 |
DRILLING COST INDICATOR
In drilling oil and gas wells, particularly by the rotary drilling technique, it is necessary periodically to pull the drill string from the well in order to replace a worn bit. The most economic...
|
|
|
3752966 |
DRILL BIT UTILIZATION OPTIMIZER
Disclosed is a special purpose digital data processor to generate information for optimizing the utilization time of a drilling bit for oil wells, etc. The system includes a series of registers for...
|
|
|
3660649 |
APPARATUS AND METHOD FOR COMPUTING DRILLING COSTS
Apparatus and method for computing the cost per unit length of borehole drilled by a drilling apparatus, as for example, the cost per foot of borehole drilled. First signals representative of...
|
|
|
3581564 |
METHOD FOR DETECTING ROLLER BIT BEARING FAILURE
A method for detecting failure of bearings in roller drill bits used in rotary drilling. Two drilling parameters--rotary torque and drilling rate--are measured and plotted with a third parameter...
|
|
|
3541852 |
ELECTRONIC SYSTEM FOR MONITORING DRILLING CONDITIONS RELATING TO OIL AND GAS WELLS
|
|
|
3522727 |
MEASURING APPARATUS FOR DRILLING RIGS
|