SU1190012A1 - Apparatus for processing logging data concurrently with drilling - Google Patents

Abstract

A DRESSING DATA PROCESSING DEVICE IN THE DRILLING PROCESS, containing readout devices from autonomous instrument recording media and a ground recorder, a memory element that is connected via a code-to-recorder to the recorder, input and output registers, a trigger trigger and a trigger trigger, different that, in order to increase the efficiency of obtaining an analog logging diagram as a function of well depth, it is equipped with two input multiplexers, an additional memory element, two IIIIIIIIII IIIII Methi burden address counters and two auxiliary counters, two decoders, four OR circuits and a differentiating chain, with two multiplexers connected by inputs to devices reading time stamps and depth marks, and outputs to address counters, switching trigger connected to the inputs "write / reading of memory elements and address inputs of multiplexers, trigger trigger is connected to the main address counter with the decoder for the main address counter, and through the differentiating chain and circuit for output OR with a switching trigger, and for each memory element the output of the auxiliary counter fill decoder is connected to the reset circuits of the address counters ig and through the OR circuit with one of the switch trigger inputs whose output / f is connected via the OR circuits to the reset circuit of the main address counter and with an auxiliary address counter feedback circuit. Code sc5a press; (; o paramegpro

Description

I III I I I I I II Depth Tags

I I I I I I I I I I I I I I I I Memxu Burden

b figure 1

The invention relates to field geophysics and can be used in well surveys with autonomous instruments in the drilling process, namely, the processing of log data.

The purpose of the invention is to increase the efficiency of obtaining an analog logging chart as a function of well depth, as well as saving memory space.

FIG. 1 shows the data recording formats in the well (a) -and on the surface (b); in fig. 2 - structural diagram of the equipment.

The proposed equipment contains a reader of 1 time stamps, a reader of 2 depth marks, input multiplexers 3 and 4, auxiliary counters 5 and 6, main counters

7 and 8 addresses, memory elements 9 and 10, descramblers 11-13 filling, OR circuits 14-17, switch trigger 18, trigger trigger 19, differentiation chain 20, input register 21, output register 22, analog-to-analog converter 23 the recorder (recorder) 24, the reader 25 parameter codes, the input 26 of the initial installation.

The equipment contains two identical storage nodes containing storage elements 9 and 10, counters 7 and 8 addresses, auxiliary counters 5 and 6, decryptors 11 and 12, and logic elements 14 and 15. Each of the storage nodes operates alternately in write and read mode. The setting of the mode "Record reading" is performed by trigger 18.

In the address meter input, the pulses are received from the reader of the 2 depth marks, and in the playback mode, from the reader 1 of the time stamps through multiplexers 3 and 4. Auxiliary counters 5 and 6 are used to control the switching of the storage elements together with the decipherors 11 and 12. from read to write. To this end, they provide the ability to install a reverse code. The counting of pulses in the main (7 and 8) and auxiliary (5 and 6) counters is carried out synchronously. Let the address A be recorded in the counters 5 and 7 when recording information in the storage element 9 ;. After element 9 is switched to the read mode by the signal from trigger 18, the contents of counter 7 are erased, and counter 5 forms the reverse AI code of the number AI. When reading information, when the address code in counter 7 reaches AI, the contents of counter 5 are Ai + Ai 1. Then, at the output of the decoder 11, a read out signal appears, the translating element 9 through the OR circuit 16 and the trigger 18 to the write mode and the counters 5 and 7.

When conducting field geophysical surveys of wells during drilling or when lifting drill pipes, the well information is recorded by an autonomous device as a function of time. In parallel with ground recorders, the movement of the drilling tool is recorded as a function of time.

Magnetic tapes, semiconductor integrated circuits, and others can be carriers of the recording both in the downhole tool and in the ground recorder.

0 After the end of logging and the lifting of an autonomous device to the surface, the well information is overwritten as a function of the depth of the well according to the movement data of the drilling tool. The rewriting process is that logging data codes from the recording medium of the self-contained instrument and depth marks from the recording medium of the ground recorder are reproduced synchronously with the time stamps. At the same time from the recording media

0 of the automatic instrument, the parameter codes (block 21) and time stamps (block 1) are read, and the ground recorder records corresponding to the same time stamps of the depth marks (block 2) from the recording medium of the ground recorder. Obviously, with a properly selected measurement mode, the number of time stamps is greater or equal to the number of depth marks. Moreover, since the speed of movement of the boring tool is not constant, then during synchronous reproduction of media

Records of depth marks are also not uniformly read over time. Therefore, codes of borehole parameters, after their attachment to the depth, form an unequal number of samples along the time axis.

In order to obtain an analog logging diagram, it is necessary that the recorder with a continuous flow of the chart tape receives the values of borehole parameters evenly.

In this connection, the equipment uses the principle of intermediate accumulation

0 parameters associated with the depth of the codes in the storage element of a small capacity. This capacitance is selected from the condition of the longest time interval between the depth marks, expressed in the number of months. For example, in the event of a breakdown in the process of lifting the drill string, during the unscrewing of the candles, there is no movement of the tool and an anomalous time interval between the depth marks is formed. The value of this interval, expressed in the number of time stamps, and can make up the capacity of the storage element. The equipment works as follows.

In the initial state, the input signal 26 sets up the triggers 18

5 and 19. At the same time, element 10 is transferred to the “Record” position, and element 9 is transferred to the “Read” position, but so far there is no information in it. Output levels “1 and

"About multiplexers 3 and 4 take such a position that the depth marks are applied to counters b and 8, and time stamps are sent to counters 5 and 7. When the depth marks are received on it, the address counter 8 changes its contents and, at the selected addresses from register 21, the current parameter codes read by device 25 are stored in the memory. Thus, the depth is linked. The accumulation of codes continues until the counter 8 is filled (code 1 ... 1). Then, at the output of the decoder 13, a signal appears, tilting the trigger 19, which is fixed by the differentiating chain 20 in the form of a pulse, tilting the trigger 18.

This completes the first stage of preliminary accumulation of data and begins its output. Since trigger 18 overturns, element 10 is switched to read mode, and element 9 is set to write mode. By the voltage drop from the output of the trigger 18, the counter 8 is set to " O, and in the counter 6 a reverse code is formed. But since the code 11 ... 1 is recorded there, this counter is also reset. The inputs of counters 6 and 8 now receive time stamps from the output of multiplexer 3, the readable codes from element 10 are transferred to register 22 and from there, converted to an analog signal by block 23, to recorder 24.

At the same time, codes are recorded for depth marks in element 9, as they were previously recorded in element 10. Obviously, the readings of counters 5 and 7 are smaller than those of counters 6 and 8, since the number of time stamps is always greater than the number of depth marks. Consequently, the reading process from any element 9 (or 10) is completed earlier than the process of writing information to another block 10 or 9.

Since in this case we are considering reading information from element 10, as soon as all the information is derived from it, the recorder in counter 6 (in this case, 8) sets the code 11 ... 1, by which the decoder again triggers trigger 18 through the circuit OR 17 and zeroed counters 6 and 8.

Now the codes accumulated in element 9 are output. Let the number of these codes be less than the capacity of element 9, i.e. counters 5 and 7 are not filled.

When the flip-flop 18 flips through the OR circuit 14, the counter 7 is set to " O, and in the counter 5 a reverse code is generated. The time stamps from the output of multi5 plexer 4 begin to arrive at the input of both counters until the number of incoming pulses matches the number of filled memory cells of element 9. Indeed, let the number of filled cells be Aj, then the inverse code of the number in counter 5 is em A2 and upon receipt of this counter Yes pulses in it set the code A2 + A2 1.

Then the decoder 11 is triggered again, the trigger 18 overturns and the counters 5 and 7 reset to zero.

5 Thus, all the time while the time and depth marks from reading devices 1 and 2 arrive, elements 9 and 10 work in parallel, one of them accumulates information related to the depth, and the other at this time gives information to the recorder. As soon as the memory, the issuer of the parameter codes is cleared, it is immediately transferred to the recording mode, and the memory, which previously accumulates the parameter codes, works to issue them, i.e. Parameter codes converted to an analog signal are continuously and uniformly transmitted to the recorder. The capacity of the storage elements used is substantially less.

FIG. g

Claims (1)

HORIZONTAL DATA PROCESSING EQUIPMENT IN THE DRILLING PROCESS, containing devices for reading information from the recording media of a stand-alone device and a ground recorder, a memory element that is connected via a code-to-analog converter to a recorder, input and output registers, a switching trigger and a launch trigger, characterized in that , in order to increase the efficiency of obtaining an analog well log as a function of well depth, it is equipped with two input multiplexers, an additional memory element, two Parameter Codes I I I I I I I I I I I I I I I I I Marks of burden a. there are address counters and two auxiliary counters, two decoders, four OR circuits and a differentiating circuit, with two multiplexers connected by inputs to time stamp and depth mark readers, and outputs to address counters, a switching trigger connected to the “write / read” inputs of elements memory and address inputs of multiplexers, the trigger trigger is connected at the input to the decoder filling the main address counter, and at the output - through the differentiating chain and the OR circuit with the trigger switch moreover, for each memory element, the output of the auxiliary counter fill decoder is connected to the address counter reset circuits addresses. SU ... 1190012 | II II | | | I II ^{Metrics of the} depths I I I I I I I I I I I I I I I I I I Burden marks b FIG. 1