MX2014007293A - An electrical power distribution method for a wireline tool string downhole. - Google Patents

Abstract

The present invention relates to an electrical power distribution method for distributing power between two or more operating units of a wireline tool string downhole performing at least one operation. The electrical power distribution method comprises the steps of recording information (10) indicative of at least one operating condition (15) using one or more sensors comprised in the tool string, comparing the recorded information (20) to a set of predefined intervals (25) of the at least one operating condition (15), defining a power distribution (30) between the two or more operating units based on the comparison of the recorded information (20) and a predefined interval (25) of the at least one operating condition, classifying the set of predetermined intervals (27) in order to ensure a safe operation, such as classifying whether different operating units are classified as no risk, moderate risk or high risk, and controlling the electrical power distribution (40) of the operating units based on the definition of the power distribution and the classification of the set of predetermined intervals. Furthermore, the present invention relates to a wireline system for carrying out the method according to the invention.

Description

METHOD OF DISTRIBUTION OF ELECTRIC POWER FOR A COLUMN OF TOOLS OF LINE OF STEEL OF THE FUND OF A PERFORATION FIELD OF THE INVENTION The present invention relates to a method of distributing electric power between two or more operating units of a column of steel line tools of the bottom of a hole that perform at least one operation. In addition, the present invention relates to a steel line system for carrying out the method according to the invention.

BACKGROUND OF THE INVENTION The columns of steel line tools in the bottom of a hole are becoming increasingly complex, as they typically consist of several specialized operational tools to perform more complex operations in the bottom of the hole, for example operations involving different types of operations such as drilling, closing valves, installing patches, recording training or tubing characteristics, etc.

By increasing the complexity and number of tools, the amount of electrical energy required 52-1021-14 in the column of steel line tools also increases. In order to supply significant amounts of energy at the bottom of the borehole, the voltage applied to the steel line is generally increased to overcome the large voltage drop across the long length of a steel line. However, increasing the voltage can lead to dangerous situations such as electrical failure or electric shock, and is therefore limited. Likewise, the possible transmitted energy through the steel line is limited due to the ordinary heat dissipation in a long wire. Therefore, the energy transmitted through a steel line to supply power to the operating tools of the bottom of the bore is inherently limited.

A commonly used way to handle the growing need for electrical power is to increase the number of conducting wires in the steel line, and therefore increase the total thickness of the conductive part of the steel line that supplies the electrical power. Also, many attempts have been made to develop tools with a lower consumption of electrical energy, while maintaining their ability to perform the same tasks.

Use a thicker steel line, or a line 52-1021-14 Steel that contains more conductors, increases the weight and cost of the steel line. In addition, it increases the energy required to transport the steel line, for example when using a tractor, in horizontal parts of a well. This again increases the electrical energy required by the tool column, thereby consuming a part of, or even more than, the additional energy supplied by the thicker steel line. Minimizing the energy consumption of the electrical components of the bottom of the drilling can be a long and expensive process, since the components used in the bottom of the drilling in themselves represent the latest technology with respect to the minimization of energy consumption due to the inherent limitation of energy to feed tools and components at the bottom of the hole.

SUMMARY OF THE INVENTION An object of the present invention is to overcome all or part of said disadvantages and drawbacks of the prior art. More specifically, one objective is to provide an improved system capable of performing several operations at the bottom of a bore by a normal cable and an improved method for a boundary controller system of the borehole. 52-1021-14 perforation The above objects, together with various other objectives, advantages and features, which will become apparent from the following description, are achieved by a solution in accordance with the present invention by means of a method of distributing electrical energy to distribute energy between two or more operative units of a column of steel line tools of the bottom of a hole that perform at least one operation, the method comprises the steps of: record information indicating at least one operation condition, using one or more sensors included in the tool column, - compare the recorded information with a set of predefined intervals of the at least one operation condition, defining an energy distribution between the two or more operating units based on the comparison of the recorded information and a predefined interval of the at least one operation condition, control the distribution of electrical energy of the operating units.

By having a method to distribute the energy 52-1021-14 Electricity between two or more operating units in the steel line tool based on one operation, it is possible to use the limited electric power available for, and in, the steel line tool column. By comparing the operating condition with a predefined interval, the registered operating condition can be detected to determine whether the operating condition falls within a dangerous range for an operating unit and if so affects the electrical power supplied to the operating unit.

The method of distributing electrical energy according to the above description may further comprise a step of classifying the set of predefined intervals.

By classifying the predefined intervals of the at least one operating condition according to classification parameters with the same level of importance independent of the predefined intervals, the classification parameter can be related to the operation condition, and therefore the distribution Electric power according to the most important classification parameter of the operating condition is performed more intelligently than just by comparing the operating condition with an individual interval.

Moreover, the step of comparing information 52-1021-14 Registered may comprise comparing the recorded information with at least one additional predefined interval.

Likewise, the electric power distribution method according to the above description may further comprise the step of prioritizing the operating conditions of two or more operating units and to base the step of defining the appropriate distribution of electric power on the priority assigned to the Operating conditions.

In addition, by comparing the classification parameters, a better decision can be made about what operation condition is to be considered and how to distribute the electrical energy to the operating unit comprising the operating condition.

By using the information concerning which operating unit performs an operation, the information can be useful in deciding how to distribute the electric power if two or more classification parameters of two or more operating units are equal.

Additionally, the operating unit may comprise a plurality of operating conditions.

In addition, using the information of a predefined order of the operating units in the system can be useful in terms of how to distribute the energy 52-1021-14 electrical if two or more classification parameters are equal and two or more operating units are performing an operation.

Likewise, using the information of a predefined order of the range of the operating units in the system and having the operating conditions in an operating unit to also be ordered according to a predefined range can be useful in terms of how to distribute the electric power when it uses a plurality of operating units and a plurality of operating conditions comprised in the operating unit, if two or more classification parameters are equal and two or more operating units are performing an operation.

By having an operating unit comprising at least one operating condition and registering, evaluating, deciding and controlling according to the method, a master-slave relationship can be configured between the two or more operating units.

The steps of comparing the recorded information, defining the appropriate distribution of electrical energy and controlling the distribution of electrical energy from the column of steel line tools can be performed outside the drilling on a surface. 52-1021-14 The evaluation, decision and control can be done on the surface by a computer or through human interaction.

Moreover, the steps of comparing the recorded information, defining the appropriate distribution of electrical energy, controlling the distribution of electrical energy, evaluating, deciding and / or controlling the column of steel line tools can be performed at the bottom of the drilling in the column of steel line tools.

The evaluation, decision and control can be done in the bottom of the hole by a computer or by logic.

In the above-described electrical power distribution method, the operating condition can be a temperature, a pressure, a power, a vibration, a sound, a voltage, a current, a light, an angle, a speed or a frequency u Another operation condition during bottomhole operations.

Also, the sensor can be a temperature sensor, a pressure sensor, a wattmeter, an accelerometer, a microphone, a voltmeter, an ammeter, a light sensor, an angular measuring tool, a transducer, a laser or other 52-1021-14 sensors to measure operating conditions at the bottom of the borehole.

In addition, the operating unit can be a drilling bottom tractor, a milling tool, a cleaning tool, a percussion tool, a wrench tool, a capacitance tool, a laser tool, a laser, a computer, a sensor, a processing unit, an electric circuit or other operating units for use at the bottom of the borehole.

The present invention also relates to a steel line system for carrying out the method according to the previous description, wherein the steel line system comprises one power distribution unit, two or more operational tools and two or more more sensors to measure operating conditions.

BRIEF DESCRIPTION OF THE DRAWINGS The invention and its many advantages will be described in greater detail below, with reference to the attached schematic drawings, which for the purpose of illustration show some non-limiting modalities and in which: Figure 1 shows a schematic diagram of 52-1021-14 a method to distribute electrical energy in a steel line tool, Figure 2 shows a schematic diagram of another method for distributing electric power in a column of steel line tools, Figure 3 shows an example of a temperature range divided into predefined intervals, Figure 4 shows a schematic diagram of yet another method for distributing electrical power in a column of steel line tools, Figure 5 shows a schematic diagram of another method for distributing electric power in a steel line tool, and Figure 6 shows a cross-sectional view of a well comprising a column of steel line tools.

All the figures are quite schematic and are not necessarily to scale, and only show those parts that are necessary in order to explain the invention, omitting other parts or simply suggesting.

DETAILED DESCRIPTION OF THE INVENTION Figure 1 shows a schematic diagram of an electric power distribution method for 52-1021-14 distributing energy between two or more operating units of a column of steel line tools that perform at least one operation at the bottom of the borehole. The operating units can be used to perform operations such as milling, cleaning, measuring, percussion, etc. At the bottom of the drilling, the power supply is very limited due to the loss of energy in the long steel line when the column of steel line tools operates several thousand meters at the bottom of the drilling, and the method of Distribution of electrical energy intelligently distributes the available energy to ensure that operations that demand high amounts of electrical energy can be performed. By basing the distribution of energy between operating units on the recorded information by means of several sensor inputs, the energy available for a certain column of tools at the bottom of the hole can therefore always be distributed optimally. Also, depending on the type of operation, different distribution schemes can be established by the present method.

A first step 10 of the method involves the recording of information of at least one operation condition 15 of at least one operating unit. The 52-1021-14 Operating condition 15 is recorded by the use of one or more sensors included in the column of steel line tools in order to control the distribution of electrical energy. The operating condition 15 can be, for example, a temperature in the borehole, a pressure in the borehole, an energy use in an electric motor, a vibration during drilling, a sound during drilling, a magnitude of a voltage of supply, a current, a light, an angle, a frequency or a speed. The sensor can be, for example, a temperature sensor, a pressure sensor, a wattmeter, an accelerometer, a microphone, a gyroscope, a voltmeter, an ammeter, a light sensor, an angular measuring tool, a transducer, a laser or other suitable sensor. The operating unit can be a drive unit, such as a drilling bottom tractor, a milling tool, a drilling tool, a cleaning tool, a stripping tool, a wrench tool, a capacitance tool, a laser tool, a laser, a computer, a sensor, a processing unit, an electrical circuit or another operating tool for use at the bottom of the hole. Thus, the step of recording information can be to measure a temperature in a 52-1021-14 milling tool. The step of recording information 10 of the operation condition 15 can be performed by the sensor itself or by sending the information to a computing unit. By separating the sensor and the counting unit, the sensor can, for example, become more resistant to vibrations compared to sensors comprising means for recording the information.

A second step 20 of the method, as shown in Figure 1, involves comparing the recorded information with a set of predefined intervals 25, for example comparing a temperature of a milling tool during operating condition 15 with a predefined temperature range. 25 to obtain an optimum operating temperature.

When the recorded information has been compared in step 20 with the set of predefined intervals 25, a next step 30 is to define an adequate distribution of electrical energy between the two or more operating units. The comparison step 20 of comparing the recorded information and the predefined intervals 25 is used as the basis for deciding with respect to an adequate distribution of the electric power between operating tools in step 30. For example, if information indicating a 52-1021-14 temperature in a drilling head, and if it is found that the recorded information is within a predefined interval which, for example, is considered dangerous for the drilling operation, the distribution of electrical energy can be redistributed by changing the distribution of electrical energy between the drill bit and a cooling unit, that is, by decreasing the amount of electrical energy supplied to the drill bit and increasing the amount of electrical power supplied to the cooling unit in order to increase cooling of the drill bit. Due to the limited available energy, the cooling unit can only be used when necessary, since the main purpose of the drilling operation is to drill and not to cool the drill bit when it is not necessary.

The last step 40 of the method shown in Figure 1 is a step of controlling the distribution of electrical energy 40 between the two or more operating units based on the step of defining an adequate distribution of electrical energy 30, such as decreasing the amount of energy to the drill bit and increase the amount of energy to the cooling unit. The control step 40 can 52-1021-14 be done through the use of a computer, a circuit or other electronic components capable of distributing the amount of energy to the two or more operating units based on the step of defining an adequate distribution of electrical energy 30. The step of controlling the distribution of Electric power 40 may comprise, in its simplest form, controlling two operating units, for example where one of the two operating units receives more electrical energy and the other consequently receives less electrical energy, in order to ensure that all electric power available at the bottom of the hole is used to perform the operation. In a more advanced form of the step of controlling the distribution of electrical power 40, a plurality of operating units can be controlled by distributing electrical power by shutting down one or more operating units and distributing the remaining available electrical energy to an operating unit, or vice versa.

An example of a column of steel line tools 80 in a tubing 78 is shown in Figure 6, in which the tool column comprises a bottom drilling tractor 66 having an electronic section 72, a drill bit. 60 comprising a temperature sensor 62 and a unit of 52-1021-14 cooling 63. The steel line tool 80 column may have been programmed to establish a flow path, through an isolation valve in the tubing that fails to open, by drilling a hole in the isolation valve with the drill bit 60. The temperature sensor 62 records information of a temperature in the drill bit 60 during the operation and sends the recorded information to the electronic section for comparison with a predefined interval.

A predefined interval can represent a temperature range, for example T > 150 ° C. When the milling tool drills a hole in the valve, the bottom drilling tractor 66 provides a force whereby the drill bit 60 is pushed against the valve to puncture and penetrate the valve. If the temperature in the drill bit 60 reaches 160 ° C during operation because the pressure generated by the bottom drilling tractor 66 is too high when the drill bit 60 is pushed against the valve, it is determined that the information in the step of comparing the recorded information is within the predefined interval of T > 150 ° C. The electronic section 72 comprising processing means 52-1021-14 defines, based on the comparison and of a programmed knowledge, for example the predefined interval T > 150 ° C considered dangerous for the drill bit 60, how to properly distribute the electric power, for example by decreasing the electric power supplied to the bottom drilling tractor 66, thus reducing the force by which the drill bit 60 is pushed against the valve. The definition of the proper energy distribution can also be based on another suitable energy distribution to avoid overheating, for example to increase the electrical energy to a cooling unit, allowing the cooling unit to increase the cooling effect in the borehole. Finally, the computing means controls the distribution of electric power between the operating units, such as the bottom drilling tractor 66, and the cooling unit 63, by distributing less electric power to the bottom drilling tractor 66 , and therefore more towards the cooling unit 63, and use the new amount of electric power available to perform the operation.

By using the method comprising the steps described above to distribute electrical energy 52-1021-14 between two or more operating units in a column of steel line tools 80 performing at least one operation, it can be detected if one or more operations are carried out under inadequate or even dangerous operating conditions for the two or more operating units, and therefore distribute the energy in an appropriate way to avoid problems. The steps of comparing the recorded information, defining an adequate distribution of electrical energy and controlling the distribution of electrical energy of the column of steel line tools 80 can be performed outside the borehole by a computer, assisted by human interaction, by a circuit electronic or similar electrical devices capable of performing the above-mentioned steps in part or in combination. To minimize the transfer of data through the steel line, the steps can, however, preferably be performed at the bottom of the perforation in the steel line tool column 80 by the electronic section 72 comprising the means of computation 61 capable of performing the steps mentioned above.

As shown in Figure 2, the comparing step 20 may further comprise a subroutine with a step of classifying the predefined intervals 27 with a set of classification parameters, for example from 52-1021-14 according to a level of importance, a level of risk, etc. of the operation condition 15. The classification parameter can be a degree, a number or a similar indication of whether the operation condition 15 is in an appropriate or inadequate range and / or with what degree of risk, such as a classification either without risk, with moderate risk or high risk. The classification of the predefined intervals 27 allows to categorize the different operating conditions based on their criticality for the operation or for the breakdown of tools. When defining an energy distribution, in step 30, between different operating units in a tool from the bottom of the hole, it is very important to ensure critical processes that require electricity. An example can be a drilling operation with a drilling tool that has a maximum critical temperature. The temperature can be classified as a predefined interval of high risk if the entire tool can be damaged as a result of exceeding the predefined interval. The drilling speed may be another operating condition classified as a predefined interval of low risk. Maximum priority can be assigned to the predefined speed range during drilling operations that require speed 52-1021-14 as opposed to, for example, precision operations or start of laterals. However, even when speed is prioritized based on the purpose of the operation, it is important that the speed be classified with less importance than critical operating conditions such as temperature. The classification step of the predefined intervals 27 should not be mixed with the priority assignment of the operating conditions, since the classification of parameters is used to guarantee the safe operation of the drilling bottom tool, while the assignment of Priority of operating conditions allows the user to configure an operation when the important operating conditions for that specific operation type are prioritized over less important operating conditions.

Figure 3 shows an example of three predefined intervals 25, a first 50, a second 51 and a third 52 predefined interval 25, which can be classified by three classification parameters A, B and C. As can be seen in the example of predefined intervals 25 shown in Figure 3, the set of predefined intervals 25 can comprise temperature ranges, which can further be classified by parameters A, B and C, where A < 150 ° C, 150 ° C = B < 175 ° C and 52-1021-14 C > 175 ° C, where the classification parameter A can be defined as without risk of damaging the operating unit, B can be defined as a moderate risk of damaging the operating unit, and C can be defined as a high risk of damaging the operating unit during the operation.

Using classification parameters A, B, C, the method of distributing the electrical energy to two or more operating units facilitates the distribution of electrical energy in a more intelligent way than when only the information of the operating condition is compared with the predefined intervals 25.

The schematic diagram of Figure 4 shows a method in which the step of defining an adequate distribution of electric power 30 further comprises a step of comparing classification parameters 35 of at least two different operating conditions 15, for example temperature, speed rotary, current consumption, etc. For example, a milling tool performs an operation to drill a hole in a valve that blocks a flow path in the well according to the method described. A temperature sensor registers information of the operating condition 15 indicating a temperature of the auger in the milling tool, and the sensor for measuring the rotation of the auger records information of the 52-1021-14 operating condition 15 of revolutions per minute (RPM) of the bit during the step of recording information 10. Each of the operating conditions 15 indicating the temperature and RPM of the drill bit is compared with a set of pre-defined intervals 25 classified by a set of classification parameters. The classification of the predetermined range is chosen, for example, to define that an operating condition 15, for example the temperature of the drill bit, must always be within an acceptable tolerance range of 100 to 150 ° C, depending on the material used, since the drill bit can simply break at too high temperatures, while a second operating condition 15, such as the RPM of the drill bit, would have an acceptable tolerance range of 10,000 to 15,000 RPM because, for example, an optimal drilling performance. Comparing the classification parameters of the predefined intervals 25 between the two operating conditions 15 thus allows an appropriate distribution of energy 30 to be defined, and thus it is possible to control the operating units accordingly.

By having several operative units, each one carrying out the steps of registering information 10, the step 52-1021-14 of comparing the recorded information 20 and the step of defining an adequate distribution of electric power 30 for operating conditions 15 of the specific operating units, a master-slave relationship can be configured between the two or more operating units in such a way that a master unit it comprises the comparison of classification parameters based on inputs of classification parameters and on the corresponding appropriate energy distributions of each of the operating units and, in addition, the master unit controls the distribution of energy.

In some cases it may be difficult to base the energy distribution on a comparison of classification parameters if, for example, all operating conditions 15 suddenly fall within a high risk range. However, as shown in Figure 5, the definition of an adequate distribution of electrical power 30 can further be based on the preference of the classification parameter of the operating unit that performs the at least one operation by a priority assignment step. 37 that prioritizes the classification parameters. If during the comparison of classification parameters 35, two or more classification parameters are identified with equal values from two or more units 52-1021-14 As a result of the operations, an optimal distribution of energy between the units can be achieved by prioritizing the operating conditions. 37. In addition, specific operations may require specific priorities; for example, during the movement of the tool column 80, the priority assignment is different than the priority assignment during drilling. With respect to the previous example, comparison 35 compares the temperature classification parameter of the drill bit. The comparison 35 can then identify that the classification parameters are the same, and additional information may be required to make a decision. If the operational classification parameters are prioritized, for example, if the temperature is prioritized over the RPM of the drill bit, as much energy as possible can be supplied to the drill bit to perform the drilling operation without compromising the tool due to overheating. , that is, if the temperature has a higher priority, as much energy as possible can be supplied to the drill bit as long as the temperature remains below a certain predefined interval 25. On the other hand, if the temperature increases beyond a critical temperature, the energy supplied to the drill bit can 52-1021-14 Do not increase, even if the drill bit can operate at RPM that are not optimal for the drilling process. Alternatively, during an increase in temperature the electric power supplied to the drill bit can be kept constant, and the electrical power supplied to a bit cooling unit can be increased, etc. By prioritizing the classification parameters, the priority assignment can be used to define an adequate distribution of electrical power if two or more classification parameters are equal. The priority assignment of the operating units can be selected based on, for example, temperature tolerances, power tolerances, pressure tolerances, vibration tolerances, cost / benefit, time consumption, etc. of the operating units and / or other parameters.

Prioritizing the plurality of operating conditions 15 and / or prioritizing the plurality of operating units allows adequate power distributions during complex operations involving many operational tools and many operating conditions 15.

Figure 6 shows a column of steel line tools 80 comprising a unit of 52-1021-14 drive, such as a bottom drilling tractor 66, a hydraulic section 68, an electric motor 70, an energy distribution unit 73 and a steel line 74.

By tubing it is understood that it is any type of tube, pipe, tubular, coating, column, etc. used in the bottom of the drilling in relation to the production of oil or natural gas.

The tractor at the bottom of the borehole may have projectile arms with wheels, where the wheels are in contact with the inner surface of the casing to advance the tractor and the tool in the casing. A drilling bottom tractor is any type of drive tool capable of pushing or pulling tools at the bottom of a well bore, such as a Well Tractor®.

Although the invention has been described in the above in connection with preferred embodiments of the invention, it will be apparent to a person skilled in the art that various modifications are conceivable without departing from the invention as defined by the following claims. 52-1021-14

Claims (11)

1. A method of distributing electrical energy to distribute energy between two or more operating units of a column of steel line tools 80 at the bottom of the borehole that perform at least one operation, the method comprises the steps of: recording information 10 indicating at least one operation condition 15, using one or more sensors included in the tool column, comparing the recorded information 20 with a set of predefined intervals 25 of the at least one operation condition 15, defining an energy distribution 30 between the two or more operating units based on the comparison of the recorded information 20 and the predefined interval 25 of the at least one operation condition 15, classify a set of predefined intervals 27 in order to guarantee a safe operation, such as classifying if different predefined intervals 27 are classified as risk-free, with moderate risk or high risk, and control the distribution of electrical energy 40 of the operating units based on the definition of the energy distribution 30 and the Classification of the set of predefined intervals 27.

2. An electrical power distribution method according to claim 1, wherein the step of comparing the recorded information 20 comprises comparing the recorded information 10 with at least one additional predefined interval 25.

3. A method of distributing electrical energy according to any of claims 1 and 2, further comprising the step of: prioritize the operating conditions of the two or more operating units and base the step of defining the appropriate distribution of electric power 30 on the priority assignment of operating conditions 15.

4. A method of distributing electrical energy according to any of claims 1 to 3, wherein the steps of comparing the recorded information 20, defining the appropriate distribution of electrical energy 30 and controlling the distribution of electrical energy of the tool column of Steel line are made out of the drilling on a surface.

5. A method of distributing electrical energy according to any of claims 1 to 4, wherein the steps of comparing the recorded information 20, defining the appropriate energy distribution 52-1021-14 electrical 30 and control the distribution of electrical energy 40 are performed in the bottom of the drilling in the column of steel line tools.

6. A method of distributing electrical energy according to any of claims 1 to 5, wherein the operating condition 15 is a temperature, a pressure, a power, a vibration, a sound, a voltage, a current, a light, An angle, a speed and / or a frequency.

7. An electrical power distribution method according to any of claims 1 to 6, wherein the sensor is a temperature sensor, a pressure sensor, a wattmeter, an accelerometer, a microphone, a voltmeter, an ammeter, a sensor of light, an angular measuring tool, a transducer, a laser and / or other sensors to measure operating conditions 15 at the bottom of the borehole.

8. An electrical power distribution method according to any of claims 1 to 7, wherein the operating unit is a drilling bottom tractor, a milling tool, a cleaning tool, a percussion tool, a wrench tool , a capacitance tool, a laser tool, a laser, a computer, a sensor, a processing unit, an electrical circuit and / or other operating units for use in the bottom of the drilling.

9. A steel line system for carrying out the method according to any of claims 1 to 8, wherein the steel line system comprises an energy distribution unit 73, two or more operational units and two or more sensors to measure operating conditions 15.

10. A steel line system according to claim 9, wherein the operating unit is a drilling bottom tractor, a milling tool, a cleaning tool, a percussion tool, a wrench tool, a capacitance tool , a laser tool, a laser, a computer, a sensor, a processing unit and / or an electrical circuit.

11. A steel line system according to claim 9 or 10, wherein the sensor is a temperature sensor, a pressure sensor, a wattmeter, an accelerometer, a microphone, a voltmeter, an ammeter, a light sensor, an angular measuring tool, a transducer and / or a laser. 52-1021-14