JPS5886296A - Pump noise filter for measuring device among bored well in oil well - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data transmitting device for an oil well well spacing measurement device. The present invention relates to an apparatus for transmitting data from wellbore equipment to the surface by means of pressure pulsations in a drill string in a drill-to-hole measuring device. The object of the present invention is to provide a filter system for removing data interfering pulsations caused by off-well liquid circulation pumps from the data sent to the surface by means of wellbore pressure pulsations from wellbore equipment.

In the petroleum drilling industry, there may be a need to transmit real-time data from the borehole measurement device from the bottom of the well between the boreholes.The ambient parameter conditions around the drill bit contain extremely valuable information and assist in drilling. In particular, this information is of great help in making the best use of the equipment and human power needed to drill a well.There are four basic techniques for transmitting this data from the bottom to the surface: electromagnetic; Transmission of data according to method (11), insulated conductor or hard conductor system, sonic method, Islamic pressure pulse modulation. Although these methods have advantages and disadvantages, this specification describes the valve number pressure coupler method.

In the inter-valve measuring device that utilizes the co-constituent pressure pulsations, the pressure pulsations are disturbed by other pressure pulsations in the inter-valve flow path. The main cause of this disturbance pressure pulsation is the circulation pump for drilling. This circulation pump has several mechanical parts such as pistons and valves, and as it sends the drilling into the drill string, it causes pressure pulsations. It represents the noise or disturbance to the pressure pulsations generated by the transmitter of the inter-valve measuring device. Since the gap measurement device uses the gap as a data transmission path, pressure interference and noise are undesirable. The value of the noise due to the pressure pulses produced by the external liquid circulation pump is so large that it completely covers the data from the inter-valve measuring device and must be removed by the data receiving device on the surface. Regarding this noise, the interference caused by the external liquid circulation pump in the drilling system is not uniform, and varies depending on the pump type and pump manufacturer (12), and there are also differences between pumps of the same type in a particular well drilling system. The characteristic pressure pulsations of each pump vary with pump operating speed. Therefore, the noise filter for removing or passing through this pulse pressure interference is compatible with the changing conditions between each piece of equipment and equipment, can be used under actual usage conditions, and can be adapted to the changing conditions of each well drilling equipment. It is necessary to do so.

It is therefore an object of the present invention to solve the above-mentioned problems and provide a filter device, which removes noise from the flow of the valve flow.

The pump noise filter device for a valve flow measuring device according to the invention is provided with an adapted estimating device having a memory device for taking samples as a sequence for repeated operation of the pump from the pressure velocity measurements obtained from the valve flow. do. A signal related to the pressure measurement is stored, subtracted from successive pressure signal measurements in a sequence correlated to the repetitive operation of the pump, and transmitted to the receiver, processor display after noise has been removed from the sensed data. The stored signal data is updated for each pump cycle to adjust the data to changing pump operating conditions (13).It is an object of the present invention to overcome the current difficulties and provide a pump noise cancellation device. .

It is another object of the present invention to provide a pump noise filtering device for a well drilling device, and to provide a matching estimation device for recognizing the characteristics and values of pressure pulses from an off-bore liquid circulation pump of a well drilling device; The purpose is to selectively remove the influence of the pump from the pressure modulation data collected from the flow rate of the flow rate, which is transmitted to the ground surface from the gap measurement device by another circuit.

Another object of the present invention is to provide a pump noise cancellation device that adapts to changing pump noise conditions and continuously processes data transmitted to the surface from a spall measurement device and provides it to a receiving and processing device. That's true.

Embodiments and drawings illustrating the present invention will be described. In each figure, like parts or structures are indicated by the same reference numerals. The embodiments and drawings are illustrative and do not limit the invention.

The present invention can be applied to the inter-valve measuring device shown in FIG. 1 (14). The valve gap measurement device is used for normal valve valve devices. A wellbore 14 is drilled in the formation 16 by a drill bit 12 attached to the bottom end of a drill string 10 consisting of multiple segments of drilled valve pipe.

The borehole gauging device includes at least one sensor 18 at the bottom of the drill string 10 to sense physical parameters of the geological environment of the wellbore. The sensor 18 may sense, for example, the direction and tilt near the bottom of the hole as an orientation device, or as other devices such as temperature, pressure, weight acting on the bit, etc.
Or measure various required parameters.

Information from sensor 18 is sent to transmitter 20 within trill string 10. This data is sent to the earth's surface by a transmitter 20. The transmitter 20 of this inter-valve measuring device is the sensor 1
The data from 8 is encoded as the number of drills in the drill string 10, ie, the pressure pulsations in the mud. This pressure pulsation is transmitted from the transmitter 200 within the mat to one side by the surface equipment, and this pressure pulsation is detected by the pressure sensor 22, and the speed of the valve number is determined by the speed sensor (
15) Sensing by 2ro. Pressure sensor 22, speed sensor 2
3 are both connected to a conduit 24 through which the extra-cavage fluid passes. This conduit 24 is part of the well fluid flow loop between the well fluid mud pump 26 and the pivot connection 27 at the upper end of the trill string 10. Pressure sensor 22 and speed sensor 2 are electrically connected to receiver 28 . Receiver 28 extracts information-bearing data from measurements taken from the mat within valve flow conduit 24 . The pump noise filtering or cancellation device according to the invention is typically incorporated into the receiver 28 in this intervalve measurement device. The data from the receiver 28 is transmitted to a data processing and display device 60 for processing, such as mathematical calculations, into the desired usable format and display as a visual display, magnetic tape, or printed document.

The valve circulation pump 26 is a major source of noise, which is eliminated by the device of the present invention. Standard diaphragm pumps are reciprocating piston pumps, either of the duplex or two piston or duplex or three piston types. Most pumps are single-acting, but some are double-acting. In either case, fluid flow into and out of the pump is controlled by a check valve. During steady operation of the pump, steady drilling work is carried out by sending drilling liquid at a significantly high pressure at a large flow rate. Since the pump is reciprocating and uses a check valve, pressure pulsations occur in the flow through the valve.

The characteristics of this pulsation affect the mat pressure and velocity, and the extent of this effect varies depending on the physical construction of the pump. This pulsation of the overfill liquid has a periodicity related to the stroke of the pump, so that the pressure sensor in the spigot flow conduit 24 detects the periodic pressure pulsation pattern. This pulsation (l-1'-g< valve number affects the speed and is detected by the speed sensor 2, which has this influence.A pump stroke sensor is attached to the well liquid pump 26 to measure the pump stroke at a predetermined point for pump noise filtration. The pump stroke sensor has a pick-up device 29 which is mechanically attached to the pump and senses the pump position ti at regularly occurring intervals of the pump stroke cycle and correlates it with the pressure pulse cycle of the external fluid. The output of the pump stroke sensor picker (17) knob 29 is connected to a receiver 28.

FIG. 2 shows a pump noise filtering or cancellation circuit according to the invention as a block diagram. The waveforms shown in each part of FIG. 2 indicate the shapes of various signals in each part of the device. The output signal from the pump stroke sensor is a series of pulses spaced in a sequence corresponding to pump strokes 4 and 11, and the timing circuit 62 The signal is used to generate a signal in response to each stroke of the valve number circulation pop 26.The output from the timing circuit 2 is a rectangular wave as shown in the figure.Both the pressure sensor 22 and the speed sensor 23 are connected. The pressure and velocity pulsations of the external liquid are continuously sensed within the conduit 24. When the gap-valve measuring device is activated, the output signals from the pressure sensor 22 and speed sensor 23 are the same as the pressure pulsations of the gap-valve measuring device. The waveforms of these signals include peaks that are significantly higher than the others. The large peaks represent positive pressure pulses from the pump 26. (18) We estimate that the other peaks in the waveform probably came from the interstitial valve measuring device transmitter. However, determining the calibration by visual inspection alone is inaccurate. The signal from the pressure sensor 22 is the signal from the speed sensor 2. It is also sent to the synthesis circuit 25.Synthesis circuit 2
5 synthesizes the inner input signals to produce an output signal. That is, the synthesis circuit 25 subtracts the data signal of the speed sensor 22 from the data signal of the pressure sensor 26. Since the measured waveforms for both measurement parameters are similar in terms of data signals, the subtraction removes speed-related noise and results in a value that is representative of the pressure measurement. Generally, this combination or subtraction process improves the signal-to-noise ratio of the pressure data signal. The output from the synthesis circuit 25 is a noise-reduced pressure data signal and will henceforth be referred to as pressure sensor data or pressure sensor signal.

The pressure sensor data from the synthesis circuit 25 is sent to the conformity estimation circuit 3.
4. Supply to the subtraction circuit 66. The output of the estimation circuit 34 is also supplied to the autumn calculation circuit 36.

The adaptation estimation circuit 64 is connected to receive the output of the timing circuit 32, receives the corrected pressure (19) sensor signal from the synthesis circuit 25, and supplies the output to the subtraction circuit 66. The estimation circuit 4 has a circuit that stores data representative of a specific portion of the pressure sensor output signal from the synthesis circuit 25 in correlation with the output signal from the timing circuit 62. The human power for the adaptive estimation circuit 34 is divided into multiple pressure data sample portions during each pump stroke interval. During each pressure data sample portion, pressure sensor data is sampled and stored by estimation circuit 34. Thus, multiple samples of pressure sensor data are obtained for each stroke of the pump. This data is one for each pressure sample portion; these pressure data samples are collected to modify the representative value stored in the estimation circuit for each pump stroke. Thereby, the data stored in the estimating circuit follows the pump operation, and adapting to changing pump operating conditions, this adaptive estimating circuit 64 acts as a tracking rectifying filter, remembering the sum of previous partial values. A memory circuit is provided in the fitting estimation circuit 64 to store the representative value of the data from the pressure sensor (20). adapts or changes the retained data to accommodate changes in the data based on well operating conditions. In summary, the adaptation estimation circuit 34 is the adaptation function of a filter called a tracking rectification filter. As an example of this change in operating conditions, changes in pump operating speed affect the pulse rate from the pump stroke sensor. Another change that affects the pressure pulse characteristics of the pump is raising the drill string from the drilling valve position, and the drill bit 1
2 is not at the bottom of the oil well, but is located above the well bottom by a short distance.This condition is sometimes used for temporary circulation of the number of well holes.

The memory circuit of the suitability estimation circuit 34 can be an analog type memory circuit or a digital type memory circuit,
Determined according to the designer's wishes. Regardless of the type of storage circuit used, the operating parameters will be the same in terms of the required functionality of this part of the device. As an example of a specific memory circuit,
Figures 6 and 5 (21) illustrate an analog storage circuit for use in the apparatus and method of the present invention. The circuit of FIG. 5 will be described in detail after the description of FIGS. 1-3.

1 and 2, the subtraction circuit 36 receives the human power from the synthesis circuit 25 and the human power from the adaptation estimation circuit 64. The subtraction circuit 66 has the function of removing a portion of the pressure sensor signal corresponding to pressure pulsations caused by the syngeneic circulation pump 26.

Selected portions of the data signal are removed from the pressure sensor data and correlated to pump stroke by timing circuit 62. Removal of this portion of the pressure sensor signal involves repeatedly subtracting from the pressure sensor data a value representative of a portion of the pressure sensor signal that occurs in a sequence correlated to the pump stroke. The signal obtained by this subtraction process includes information data from the transmitter of the inter-valve spacing measurement device since the influence of the co-circulation pump 26 has been removed. A representative waveform of this signal is shown in FIG. 2 between circuits 36 and 38.

The comparator 8 compares the output signal from the subtraction circuit 66 with a predetermined signal value to remove the external portion of the data signal (22) and sends this signal to a receiver, processing circuit, and display device to eliminate the possibility of erroneous data. Reduce. The circuitry included in the comparator 68 compares the value of the data signal with a predetermined value or a predetermined range of values, from which the output signal produced by the comparator determines the data conforming to the criteria of being greater than or within the predetermined range value. A data signal that represents a portion of a signal and is a temporally correlated signal. A waveform representative of the output of comparator 68 is shown in FIG.

The data signal from the comparator 38 can be used with digital circuitry or encoding circuitry to extract information data from the signal and display it. Depending on the device used, the output of comparator 38 may be sent to a receiver or to a complex part of processing circuitry for processing the data.

FIG. 6 shows, as a block diagram, an embodiment of the invention of a fitness estimation circuit and a subtraction circuit. A pump stroke sensor 40 is coupled to the syncyclic circulation pump 26 to generate the pulsed output signal shown. This output signal is the flip-flop circuit 4
2 to make the signal the rectangular wave shown. A phase-locked loop circuit 44 receives the output of the flip-flop circuit 42 and synchronizes the (23) output timing pulses to the timing pulse signal from the pump stroke sensor 40 such that each timing pulse from the flip-flop circuit 42 is synchronized with respect to a pump stroke cycle. to occupy a predetermined, constant amount of time. The output from the phase-locked loop circuit 44 is connected to the input of the matching estimation circuit 4.

The output signal of the synthesis circuit 25 is connected to the input of the buffer amplifier 46 to make the value of the pressure signal data available to the fit estimation circuit 64 and other parts of the circuit. The typical waveform of this data signal is shown in Figure 6 for the circuit 25 and buffer 4.
Shown between 6 and 6.

This waveform only provides an overview of the waveforms that occur here.

The actual waveform that occurs will vary depending on the operating speed of the co-circulation pump and the static pressure and velocity of the fluid in the flow conduit 24.

Since this waveform has a change in shape, it affects the waveform output of the adder circuit 50. The waveforms shown in Figure 2.3 give an overview of the waveforms that actually occur.

The fit estimation circuit 64 is as previously described and processes the data signal received from the buffer circuit 46 during the pressure sample time portion defined by the tie (24) mink circuit.

The circuit 34 includes a phase-locked loop 44 and a buffer amplifier 4.
In this circuit, which receives an input from 6 and supplies a data signal to the input of an inverter 48, the subtracter portion is performed by an inverting amplifier 48 and a summing amplifier circuit or adder 50.

The inverting amplifier 48 reverses the sign of the data signal from the circuit 34 and when added to the data signal from the buffer amplifier 46 the pressure signal data output of the buffer circuit 46 is stored in the storage circuit of the estimating circuit 64. This is the result excluding the selected pressure pulse characteristics.

The data signal output from the adder 50 is as shown in FIG.
The result is a waveform with multiple clear peaks.

This data signal is supplied to a comparator 38, which compares the received data signal with a predetermined reference value to select output data.

FIG. 4 shows an analog conformity estimation circuit. The circuit shown in FIG. 4 includes an analog storage circuit and other analog devices and connects (25) to other connections of the device circuit. Identical elements in FIGS. 6 and 4 are designated by the same reference numerals.

A pressure pulse-related data signal is provided from the synthesis circuit 25 to an input of a buffer circuit 46 . The output of the buffer circuit 46 is divided and one part is supplied to the power of the inverter 48, and the other part is supplied to the power of the adaptive storage circuit. An adaptive storage circuit or tracking rectification filter connects a plurality of capacitors 52 in parallel between buffer 46 and multiplex circuit 54 and bus bar 55 . The multiplex circuit 54 is essentially a function of multiple switches, connecting multiple capacitors 52 to the phase-locked loop circuit 44.
The multiplex circuit 54, which connects the busbar 55 to ground one at a time in synchronization with a timing signal from the circuit, can be a conventional integrated circuit and has a number of circuits corresponding to the number of pressure sample segments dividing the pump stroke time. has a multiplexing portion of The clock or timing sequence input for multiplex circuit 54 is provided by a plurality of connections from phase locked loop circuit 44. For each pump stroke time, a plurality of capacitors are connected sequentially between respective portions of the pump stroke time or predetermined pressure sample segments (26). The capacitor is charged to a value y corresponding to the value of the data signal during each connected time. By charging the capacitor in this manner, we obtain a long-term average of the data signal values during the pressure sample segment time, similar to a rectifying filter.

The output from this adaptive storage circuit is provided via bus 55 to gain amplifier 56. The output of the gain amplifier 56 and the output of the inverter 48 are added by an adder 50, and this output signal is amplified by another gain amplifier 58. The output of amplifier 58 is connected to the input of comparator 38, which compares the processed data signal to a predetermined value as described above.

When multiple off-bore liquid circulation pumps are used in a well drilling system and a well valve gap measurement device is used, multiple cascaded pump noise filters are used to eliminate noise, i.e. pulsations in the pressure and speed of each pump. Remove effects.

FIG. 5 shows as a block diagram the pump noise filter device described above, which is used to remove pump noise or interference with pressure pulse data when the well drilling system has two or more (27) external liquid circulation pumps. represents a circuit that The circuit shown in FIG. 5 includes a pressure sensor 60,
The speed sensor 61a1 includes a combination circuit 66 and senses pressure signal data at a position where a plurality of flow pump flow conduits join and the combined flow reaches the drill string. In the illustrated circuit, a first pump 62 and a second pump 64 are shown as external fluid circulation pumps. In this circuit, the first
The effect of the second pump 62 is first removed from the data signal, and then the effect of the second pump 64 is removed from the data signal. The first pump 62 has a pump stroke counter circuit,
A pump stroke timing signal is provided to the first timing circuit. The data from the first timing circuit 66 and the valve number pressure signal data from the synthesis circuit 63 are
is supplied to the suitability estimation circuit 68 of. This hydraulic data signal is supplied to a first adaptation estimation circuit 68. The output of the first adaptation estimation circuit 68 is supplied to the first subtraction circuit 70 along with the pressure sensor signal from the synthesis circuit 6 (28).
This is data obtained by removing the influence of the first pump 62 from the pressure signal data from. This data is used for the next second pump 6
It becomes the input of the circuit that removes the influence of 4.

The second pump 64 has a pump stroke counter circuit whose output becomes the second timing circuit 720 manual power as pump stroke data.

The output of the second timing circuit 72 is transmitted to the second subtraction circuit 70.
It is supplied to the second suitability estimation circuit 74 along with the output of. Second
The output from the fitness estimation circuit 76 is supplied to a second subtraction circuit 76.The output from the first subtraction circuit 70 is supplied to a second subtraction circuit 76.

The output from the second subtraction circuit 76 is data with pressure velocity pulse interference removed from both pumps 62 and 64, and this data is provided to a comparator 78 for comparison with a predetermined range of values in the same manner as described above. The output from comparator 78 is provided to a data receiver, processing device, and display device in the same manner as described above.

Use of the Pump Noise Filter Device According to the Invention (29) In operation, this device eliminates the noise or interference caused by the extra-drilling fluid circulation pump of a well drilling system, and enables the use of a pressure caballus modulator in the intervalve measuring device. do. The present invention is used in a valve number pressure modulation communication device, using positive or negative signal pressure and continuous wave or pulse modulation. Although the present invention has been exemplified as a pressure pulse modulated data transmission device, other modulation devices may also be used. The suitability estimation system of the present invention system automatically matches the pump noise requirements of each pump and well drilling system. Furthermore, the storage device used in the suitability estimation device can be of an analog type or a digital type, depending on the user's wishes. The device according to the invention can be used both in the case of one pump and in installations using several pumps. The sequence of the adaptive estimator is determined by the stroke of the pump and stores representative values of the data signal spectrum including the pressure data signal. If we remove the stored signal associated with the pump stroke from the entire spectrum, we have removed a representative of the pump noise.

This noise is the main cause of noise in the pressure medium (30
) Now that the unnecessary parts of the pressure pulse data signal have been removed, the data signal can be filtered and processed easily and accurately in a usable digital or analog format. Send to recording device.

Although the present invention has been described with reference to preferred embodiments, the present invention can be modified in various ways, and the embodiments and drawings are merely illustrative and do not limit the invention. For example, the analog storage circuit being described can be converted into a digital circuit by inserting an analog-to-digital converter. The pressure, speed sensor, and pump sensor signals can also be converted from analog to digital for use.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of a gap valve distance measurement device that is installed at the bottom of an oil well and uses the valve number pressure modulation method.
FIG. 6 is a block diagram of the noise filtering device of the circuit of FIG. 2, and FIG. 4 is a block diagram of the suitability estimation circuit of the noise filtering device of the present invention. (31) FIG. 5 is a block diagram of the noise filtering device in the case of two well liquid pumps. 10 nitrile string, 12 nitrile bits, 18.
22.2, 60: sensor, 20: transmitter,
25,63: Synthesis circuit, 26.62,64: Synthetic pump, 28: Receiver, 32.66.72: Timing circuit, 4,68,7
4: Compatibility estimation circuit, 36.70.76: Subtraction circuit, 38.78: Comparator, 44: Phase-locked loop circuit, 46: Buffer amplifier, 52: Capacitor, 54:
Multiple Circuits, Patent Applicant Dresser Industries, Inc. (32)

Claims (1)

[Scope of Claims] 1. A method for transmitting data in the form of a modulated data signal stream from a spall measurement device in an oil well to a spall number of a drill string in a drill string. 1. A circuit arrangement for eliminating pressure pulsations produced by a circulation pump, comprising: a) a device for generating a first signal responsive to repeated strokes of a circulation pump; a device for generating a second signal responsive to a fluid pressure within the valve number having a pressure pulse from a circulation pump;
C) a device for generating a sixth signal responsive to liquid velocity within a sluice number that includes a pulsed data stream; d) a signal synthesizer that receives a second and sixth signal and subtracts the sixth signal from the second signal to produce an amplified second signal as an output signal; f) a fitness estimation device and a second sixth signal generating device; f) a fitness estimation device and a second sixth signal generating device; and subtracting the stored signal from the second signal in a sequence associated with pumping), the resultant signal being transmitted from the gap measuring device to the gap valve. 1. A circuit device for a pump noise reduction device for a gap valve gap measuring device, characterized in that the circuit device comprises a subtraction device adapted to represent a data signal transmitted to a number. 2. The device for generating the first signal includes a pulse generator for generating a timing pulse signal showing a waveform that repeatedly occurs in correlation with the stroke of the circulation pump; 2. The apparatus of claim 1, comprising: an inverter circuit connected to receive a storage signal; and an adder circuit for combining the signal from the inverter circuit with a second signal to obtain a resultant signal. (2) 3. The device according to claim 1, comprising a comparator device that receives the resultant signal obtained by the subtraction, compares it with a predetermined value, and selectively generates an r output signal indicative of a pulse data signal. . 4. The fitting estimating device includes a tracking rectifier filter having an analog storage device for receiving as an analog signal each portion of the amplified second signal between each portion of the amplified second signal correlated to the first signal during repeated strokes of the pump. 2. Apparatus as claimed in claim 1, in which a representative of the two signals is retained and used for sampling in a later time portion. 5. The analog storage device comprises a multiplexing device connected to a plurality of capacitors for charging the capacitors to a value corresponding to the value of the amplified second signal occurring during each of the individual time portions. The device according to item 4. 6. The fitness estimating device includes a tracking rectifier filter having a digital storage device for receiving the first and second signals, and is digitally operated to store the stored signals for calculating the second signal occurring at each individual time portion correlated to the first signal. (3) A device according to claim 1 whose operation typically produces an output signal for a subtraction device. 7. The subtraction device includes a device for receiving a second signal and producing a digital equivalent value, and a device for generating a digital equivalent value by subtracting a stored signal from the digital equivalent value of the second signal corresponding to a repetitive pump stroke. 7. The device according to claim 6, comprising a device for: 8. The subtraction device comprises a device for subtracting the signal stored in the storage device from the digital equivalent value of the second signal during selected time segments corresponding to pump strokes to obtain a signal obtained. The device described. 9. To send data in the form of a modulated data signal from a wellbore-to-well measurement device through a number of drillholes in a drill string, removing the noise generated by the plurality of co-circulation pumps of the wellbore system from the data signal. A circuit arrangement comprising: a) a plurality of devices for generating a plurality of first signals, each responsive to a respective repetitive stroke of an individual co-circulation pump of a plurality of pumps; and b) pulsing data. C) an apparatus for generating a second signal responsive to a hydraulic pressure within the diaphragm having a signal and a noise pressure pulse from a plurality of diaphragm co-circulation pumps; d) a device for generating a third signal responsive to liquid velocity; and d) receiving the second and sixth signals and continuously subtracting the sixth signal from the second signal to output an amplified second signal. e) a signal synthesizing device for generating a respective first signal, and receiving the first signal and the other data signal, and e. f) a plurality of suitability estimators each coupled to one suitability estimator to receive said hold signal and receiving said hold signals; (5) a plurality of subtraction devices for subtracting the holding signal from the data signal in a sequence related to the stroke of each pump to produce a resultant signal that removes the influence of each pump; The sets are arranged in cascade, and the matching estimating device and the subtracting device are operated together with each pump.
supplying the signal generated after removing the effects of the pumps from the data signal to the next set of adaptation estimators and subtractors, and making the data signal supplied to the first adaptation estimator a second amplification signal; Pump noise suppression device for a gap gap measuring device, characterized in that the signal of the final subtraction device becomes a resultant data signal representative of the data signal transmitted into the drill string from the gap gap measuring device coupled to the drill string. circuit device. 10. A circuit arrangement for eliminating noise produced by a plurality of co-circulating circulation pumps of a well drilling system for transmitting data in the form of a modulated data signal through a number of well bores in a drill string from a well spacing measuring device. a) a device for generating a plurality of first signals, each responsive to the repetitive strokes of a separate comb circulation pump; and b) a plurality of comb circulation pumps supporting a modulated data stream. C) a second signal responsive to fluid pressure within the diaphragm including noise pressure pulses from the pump; and C) a third signal responsive to fluid velocity within the diaphragm supporting the hulled data flow. d) a signal synthesis device receiving the second filter signal and successively subtracting the sixth signal from the second signal to produce an amplified second signal as an output signal; ) cooperating with one of the devices for generating a first signal;
f) a first compatibility estimating device that receives the signal and the amplified second signal and holds a representative value of the amplified second signal in a sequence related to the first signal and the stroke of the first pump; 1 and receives the amplified second signal, and subtracts the retained representative value of the second signal from the amplified second signal in a sequence related to the stroke of the pump to subtract the influence of the pump. a first signal generating a removed first final signal;
g) another external liquid circulation pump and its first
(7) a device for generating a signal of the pump and receiving the first signal and the amplified second signal to generate the first signal and another pump; h) another compatibility estimating device that holds a representative value; another subtractor for subtracting in a stroke-related sequence to produce a second resultant value of the amplified second signal, the value having y removed the effects of noise between the first pump and the other pump; ) The second result signal is received and compared with a predetermined characteristic, and when the second result signal is within the characteristic, a second result signal having this characteristic is detected.
and a comparator device for generating an output signal correlated to the resultant signal. 11. An inter-well measurement device for a well-bore system having an extra-wellbore liquid circulation pump, which includes: a) inside the drill string [labeled 9 is a data signal that senses geological parameters in the oil wellbore and represents the sensed physical parameters; b) a transmitter that transmits the representative value of the data signal as a data signal (8) within the number of drill valves in the drill string using a hydraulic pressure modulation data transmission method; d) a receiver which receives the transmitted data by means of a pressure transducer in communication with the sensor and produces an output representative of the sensor data signal and which is representative of the sensed physical parameter; a filter device for obtaining a noise-free transmission data signal by removing the influence of pressure pulses of the external liquid circulation pump; a signal combining device coupled to the pressure transducer and the speed transducer to combine the signals from both transducers to produce an amplified pressure data representative signal; and a signal combining device for combining the timing signal and the amplified pressure data signal. an amplified pressure turntable (9), which temporarily stores a data signal correlated to the timing signal received from the input signal and makes the output signal correlated to the timing signal represent the amplified pressure data signal in a long-term relationship; Receiving the signal and correlating it with the timing signal
A subtraction device that subtracts the device output signal to reproduce a combined data signal representative of the sensor data signal, and a subtraction device that receives the combined data signal, compares the data signal with a predetermined value, and represents the sensor data signal when the data signal is within the predetermined value. and a comparator device for producing an output data signal related to the sensed geological parameter. 12. The timing signal of the timing circuit device represents the stroke speed of the external liquid circulation pump and its segment division; 12. The apparatus according to claim 11, further comprising a storage device for storing data segments of the amplified pressure data signal so that the stored representative values of the amplified pressure data signal can be retrieved. 16. The apparatus of claim 11, wherein said fit estimating device includes a tracking rectifier filter device to receive the timing signal and the amplified pressure data signal and to provide a filtered output signal to a subtraction device. (10) 14. The apparatus of claim 11, wherein the data signal transmitter uses pulse modulation to modulate and transmit the data signal within a pulse number.