RU2296218C1 - Drilling parameter recorder - Google Patents

Abstract

FIELD: automatic control systems specially adapted for well drilling operations used for drilling and operation of wells, blast-holes and for other procedures.

SUBSTANCE: recorder comprises body with electronic unit and power supply unit arranged in the body. Electronic unit includes microprocessor with executive program, x and y plane accelerometer, nonvolatile memory microcircuit, calendar time timing means, temperature sensor and data input-output port, which provides data output and input in computer with the use of communication interface. Microprocessor output is connected to the first input of nonvolatile memory microcircuit. X and y plane accelerometer is linked to the first microprocessor input, calendar time timing means is communicated with the second microprocessor input and temperature sensor output is connected to the third microprocessor input. Temperature sensor input is connected to power supply unit. Input and output of data input-output port are linked to microprocessor. Input of data input-output port is connected to power supply unit. Calendar time timing means input, the forth microprocessor input and accelerometer input are linked to the second nonvolatile memory microcircuit input.

EFFECT: increased accuracy and information content due to recording of new parameters, hydraulic downhole motor rotation speed, vertical tool vibration, temperature measurement and data binding to calendar time with high accuracy and decreased size.

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Description

The invention relates to control and measuring systems of modes of drilling wells and can be used in drilling, operation of wells, pits, as well as in other processes and mechanisms outside drilling, operated in remote places having a certain temporary service life.

Well-known ground-based systems for monitoring the regime of well drilling, consisting of many sensors, communication lines, computer, software, feedback lines and mode indicators (see AS USSR No. 1273515, IPC E 21 V 44/00, bull. No. 44 , 1986 and US patent No. 5226332, NCI 73/151, 73/493, 73/650, 175/40, publ. 07/13/93).

The disadvantage of this ground-based recorder system is that they are bulky and do not measure the necessary parameters, such as the bottomhole temperature and the bit speed when using hydraulic downhole motors.

Closest to the proposed is an autonomous downhole recorder of power parameters according to the patent of the Russian Federation No. 2131973, IPC E 21 V 44/00, 45/00, bull. No. 22, 1999 - a prototype.

A prototype is available from some of the above-mentioned shortcomings - an autonomous downhole logger consisting of a housing installed in the drill string, made in the form of an sub with the contents of an electronic unit and power container, a multi-channel power parameters element, an electronic block including a multi-channel amplifier, multi-channel analog-to-digital converter, processor random access memory (RAM).

This autonomous downhole logger during drilling records in the random access memory (RAM) only the axial load on the bit and does not register the most important downhole parameters such as speed, temperature and calendar time.

The autonomous downhole recorder for autonomous operation is launched via the hydraulic communication channel, it is installed only as part of the drill pipe string, the used RAM chips require constant power supply, in the absence of which all information is lost, when the data is read from the recorder RAM, the processor resets the memory. According to the power supply, the description does not say that it automatically turns off - therefore, the autonomous recorder is activated after activation, it is constantly in operation through the hydrochannel, which means that the power supply resource is limited, it is removed only after one run and after lifting the tool or change to a new one.

The objective of the invention is to develop a compact and reliable downhole parameters recorder, the design of which will expand the functionality of the device.

The present invention solves the problem of increasing the accuracy of information content by registering new parameters, the rotational speed of the rotor of the hydraulic downhole motor, vertical vibration of the instrument, temperature measurement and reference to the calendar time with great accuracy.

In addition, the proposed recorder has housing dimensions: diameter 20 mm and a height of 60 mm, including a power source, which is several times smaller than the analogue. This allows you to install it in various elements of the bottomhole layout.

The problem is solved using the features specified in the claims common to the prototype, such as a downhole recorder, including a housing with an electronic unit and a power supply installed in it, and distinctive, essential features, such as an electronic unit, equipped with a microprocessor, in which the control program is programmed, an accelerometer of the x and y planes, a non-volatile memory chip, a calendar time timer, a temperature meter, an input / output port for information on a computer with using the communication interface, while the microprocessor output is connected to the first input of the non-volatile memory chip, an x and y plane accelerometer is connected to the first input of the microprocessor, a calendar time timer is connected to the second input, and the third input is connected to the output of the temperature meter, the input of which is connected to the power supply, and the input / output port of the data input / output port is connected by its input / output to the microprocessor, the input / output port input is connected to the power supply, and the calendar time timer input, the fourth microprocess input pa and accelerometer input connected to a second input of non-volatile memory chips.

The following illustrates the causal relationship of the distinguishing features of the proposed solution with the achieved technical result. Due to the presence of the accelerometer of the X and Y planes, the signals of which are fed to the microprocessor for processing according to the specified control program algorithm, the values of the frequency of revolutions and vertical vibration of the instrument are recorded in the non-volatile memory microcircuit, and it also allows automatic activation and deactivation of the recorder (gas microcontroller) in the active (working) and passive (sleep mode to save power supply resource and non-volatile memory chip). Thus, the registration of parameters occurs only when the registrar (microcontroller HDD) is active, i.e. when drilling wells. In the period of downtime, build-up, hoisting operations, transportation of gas discharges, the microcontroller is in a passive state. Thanks to this algorithm of the control program, the working resource of the recorder (hydraulic microcontroller) is comparable to the entire period of operation of the drilling tool, taking into account the overhaul period without changing the power source and the need to reset the non-volatile memory chip. In addition, the program allows you to assign an individual identification number to the registrar (GZD controller) to track its work at various facilities. Due to the presence of a calendar timer chip, each registration in the controller's memory is recorded with a real-time date accurate to seconds, which is important when examining the different nature of the tool, as well as for linking to data from other information available on the drilling sources. Due to the presence of a temperature meter, a recorder (microcontroller) records the temperature at the bottom, which is important for determining the working life of the tool when drilling at the bottom and choosing a drilling tool for further drilling. Thanks to the use of a non-volatile memory chip, all recorded information by the recorder (microcontroller) is stored indefinitely, even with a completely discharged power source. The control program algorithm makes it possible to read stored data from memory, at any time without resetting it. Thus, in the memory of the registrar (microcontroller), data is stored by accumulation, which gives a complete picture of the parameters of the registrar (microcontroller) at various wells and during the overhaul period.

The above distinguishing features, each separately and all together, are aimed at solving the problem - the creation of a compact and reliable downhole parameters recorder, the design of which will expand the functionality of the device, and are essential. The use of the proposed combination of significant distinguishing features in the prior art is not found, therefore, the proposed solution meets the patentability criterion of "novelty."

A single set of new essential features with common, well-known provides a solution to the problem, is not obvious to specialists in this field of technology and indicates that the claimed technical solution meets the patentability criterion of "inventive step". The proposed registrar downhole parameters is illustrated in the block diagram, figure 1

The downhole parameters recorder includes a housing (not shown in the drawing) with an electronic unit 1 and a power supply 2 installed in it (Fig. 1). The electronic unit 1 is equipped with a microprocessor 3, in which the control program is programmed, an accelerometer 4 x and y planes, a non-volatile memory chip 5, a calendar time timer 6, a temperature meter 7, an information input / output port 8 to the computer using the communication interface (in the diagram shown).

The output of microprocessor 3 is connected to the first input of the non-volatile memory chip 5, the accelerometer 4 of the x and y planes is connected to the first input of microprocessor 3, the calendar time timer 6 is connected to the second input, and the third input is connected to the output of the temperature meter 7, the input of which is connected to the power supply 2, and the input / output of the input / output port of data 8 is connected by its input / output to the microprocessor 3, the input of the input / output port 8 is connected to the power supply 2, and the input of the calendar time timer 6, the fourth input of the microprocessor 3 and the input by the accelerator tra 4 are connected to the second input of the nonvolatile memory chip 5. In addition, the proposed recorder housing has the dimensions: diameter 20 mm, height 60 mm, including a power supply, which is several times less than analog. This allows you to install it in various elements of the bottomhole layout. The device operates as follows. The registrar is placed in an element of the downhole tool, for example, in the rotor of the downhole motor (HGD) directly in the repair shop, in stationary conditions and the tool is sent, for example, HGD to the drilling site.

The microprocessor, according to the specified algorithm of a unique specially developed control program, processes the signal from the accelerometer and, upon detection of the launch of the drilling tool, registers data from the accelerometer separately on the X and Y plane, temperature meter data and date with the recording time from the calendar time timer. The discreteness of the request and signal processing is programmed by the operator in stationary conditions before installing the recorder in the instrument node. When the supply of flushing fluid is stopped, the hydraulic shutdown stops and the recorder goes into sleep mode. After working out the hydraulic circuit breaker at the well, it is lifted and sent for the next repair in stationary conditions, where during the disassembling the hydraulic breakdown the recorder is taken out and through the input / output port (designed to connect via the communication interface to the computer), registration data is read (see the graph of figure 2 ) and further data processing, as well as reset the memory chip and, if necessary, enter the individual identification number of the microcontroller. The use of high-temperature components and microcircuits makes the measurement parameters and the operation of the microcontroller stable over a wide temperature range and eliminates the influence of changes in ambient temperature.

Claims (1)

Downhole parameters recorder, comprising a housing with an electronic unit and a power supply installed in it, characterized in that the electronic unit is equipped with a microprocessor in which the control program is programmed, an x and y plane accelerometer, a non-volatile memory chip, a calendar time timer, temperature meter, input port - information output to the computer using the communication interface, while the microprocessor output is connected to the first input of the non-volatile memory chip, to the first input of the mic an accelerometer of the x and y planes is connected to the processor, a calendar time timer is connected to the second input, and the third input is connected to the output of the temperature meter, the input of which is connected to the power supply, and the input / output port of the data input / output port is connected to the microprocessor by its input / output, input the input-output port is connected to the power supply, and the calendar timer input, the fourth microprocessor input and the accelerometer input are connected to the second input of the non-volatile memory chip.

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