A monitoring system and method for the work done by drilling wire rope

Abstract

The present invention provides a monitoring system and a monitoring method for the work done by a drilling wire rope, the monitoring system comprising an explosion-proof host (1), a winch encoder (6) and a hanging weight sensor (8), the explosion-proof host having a data display module, a key control module and a data storage and retrieval module, the winch encoder being installed on the air guide interface at the low speed end of the winch drum (5), and being connected to the large hook height interface of the explosion-proof host through a signal cable (2), the hanging weight sensor being installed on the three-way at the hydraulic signal output end of the dead rope fixer (7), and being connected to the large hook load interface of the explosion-proof host through a signal cable. The monitoring system and the monitoring method provided by the present invention solve the problem of lack of objective data and time-consuming and cumbersome when judging the quantitative scrapping of large ropes, and can provide a more scientific and effective basis for quantitative scrapping, and ensure the safe and efficient application of wire ropes.

Description

Technical Field

[0001] The invention relates to the technical field of quantitative scrap judgment of steel wire ropes, and in particular to a monitoring system and a monitoring method for the work done by a drilling steel wire rope. Background Art

[0002] As an important component of the drilling rig hoisting system, the drilling wire rope (big rope) cooperates with the drilling rig winch to realize the overall raising and lowering of the derrick, raising and lowering of drill tools, lowering of casing, and controlling the drilling pressure during drilling. Whether it can be ensured to be in a good operating state is directly related to the safety of life and property, and determines the drilling efficiency and cost.

[0003] Wire ropes are frequently used in various processes of drilling projects. They are prone to fatigue and wear due to factors such as alternating stress and load. However, cutting too early will cause waste of the rope, while cutting too late will pose a safety hazard. In the current quantitative scrapping method for wire ropes, drilling engineers mainly check the appearance of the rope and measure the diameter of the rope, and then use empirical formulas to roughly calculate the work done by the wire rope. This method is greatly affected by working conditions and human factors, resulting in frequent rope breakage accidents, which pose a serious threat to the lives of employees and equipment safety. Therefore, how to provide a more effective quantitative scrapping method for wire ropes has become a technical problem that needs to be solved urgently by technicians in this field. Summary of the invention

[0004] In view of this, the present invention provides a monitoring system and a monitoring method for the work done by a drilling wire rope. The monitoring system and the monitoring method can solve the problems of lack of objective data and time-consuming and cumbersome quantitative scrap judgment of large ropes, provide a more scientific and effective basis for quantitative scrap judgment, and ensure the safe and efficient application of wire ropes.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A method for monitoring the work done by a drilling wire rope, comprising:

[0007] Obtain the real-time pulse value P measured by the winch encoder on the air guide interface at the low-speed end of the winch drum, find the real-time rope layer corresponding to the pulse value according to the prefabricated data table and the real-time pulse value P, and find the slope k of the large hook height pulse number curve corresponding to the rope layer according to the prefabricated data table and the real-time rope layer n and intercept b n , by calculating the formula H = P·k n +b n The real-time hook height H is calculated;

[0008] Obtain the real-time hook load G measured by the hanging weight sensor on the tee at the hydraulic signal output end of the dead rope anchor;

[0009] The cumulative work W of the drilling wire rope is calculated by the calculation formula W=∑(μ×G×ΔH) to achieve monitoring, where ΔH is the change in the real-time hook height H between two consecutive calculations, and μ is the unit conversion coefficient between kilonewton-meters and ton-kilometers;

[0010] The data in the prefabricated data table include the circumference L of the nth layer of large rope wrapped around one circle n , the total displacement S of the traveling carriage corresponding to the nth layer n , the starting pulse value P of the nth layer n , the height H of the big hook corresponding to the starting pulse of the nth layer n , and the slope k corresponding to the nth layer n and the intercept b n , the calculation formulas for each data are:

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017] Where D is the diameter of the winch drum, d is the diameter of the main rope, B is the length of the winch drum, N is the number of main rope strands, P is e is the number of pulses of the large rope being released, P r is the number of pulses per circle, C is the starting layer, and q is the starting circle.

[0018] Optionally, in the above monitoring method, it also includes displaying the accumulated work W in real time on a monitoring screen.

[0019] Optionally, in the above monitoring method, it also includes wirelessly transmitting the accumulated work amount W to a third-party sharing device in a universal wellsite information transmission standard format.

[0020] Optionally, in the above monitoring method, it also includes sending out an audible and visual alarm signal when the accumulated work amount W reaches a set alarm threshold.

[0021] A monitoring system for the work done by a drilling wire rope, comprising:

[0022] A winch encoder, wherein the winch encoder is installed on the air guide interface at the low-speed end of the winch drum;

[0023] A hanging weight sensor, the hanging weight sensor is installed on the tee of the hydraulic signal output end of the dead rope fixer;

[0024] The explosion-proof host has a data display module, a button control module and a data storage and retrieval module. The winch encoder is connected to the large hook height interface of the explosion-proof host through a signal cable, and the hanging weight sensor is connected to the large hook load interface of the explosion-proof host through a signal cable.

[0025] Optionally, in the above monitoring system, the explosion-proof host has a wireless transmission module.

[0026] Optionally, in the above monitoring system, the explosion-proof host has an audible and visual alarm module.

[0027] According to the above technical scheme, in the monitoring system of the work done by the drilling wire rope provided by the present invention, a winch encoder is installed on the air guide interface at the low-speed end of the winch drum, and a hanging weight sensor is installed on the three-way of the hydraulic signal output end of the dead rope fixer. The winch encoder and the hanging weight sensor are connected to the explosion-proof host through signal cables. When the wire rope moves up and down by pulling the drill tool through the big hook, the winch encoder collects the pulse signal of the rotation angle and direction of the winch drum, and obtains the corresponding digital signal after processing by the electronic circuit. Finally, the explosion-proof host calculates and processes the real-time big hook height, and then obtains the change in the big hook height during the monitoring time period. Combined with the big hook load collected by the hanging weight sensor, the work done by the wire rope in this monitoring time period is calculated according to the physical formula of work, and accumulated to the total work done before the monitoring time period, and the monitoring of the accumulated work is completed. Compared with the traditional monitoring method using manual viewing and measurement, the monitoring system and monitoring method provided by the present invention solve the problem of lack of objective data and time-consuming and cumbersome when quantitatively judging the scrapping of the big rope, and can provide a more scientific and effective basis for quantitative scrapping, ensuring the safe and efficient application of the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 is a schematic diagram of a monitoring system for the work done by a drilling wire rope provided by an embodiment of the present invention;

[0030] Figure 2 yes Figure 1 Schematic diagram of the explosion-proof host 1.

[0031] Figure 1 The markings are: 1-explosion-proof host, 2-signal cable, 3-overhead block pulley block, 4-wire rope, 5-winch drum, 6-winch encoder, 7-dead rope fixer, 8-hanging weight sensor, 9-traveling block pulley block, 10-big hook, 11-drilling tool.

[0032] Figure 2 The markings are: 101-data display module, 102-button control module, 103-sound and light alarm module, 104-wireless transmission module, 105-working power supply interface, 106-hook load interface, 107-hook height interface, 108-data storage and retrieval module. DETAILED DESCRIPTION

[0033] For ease of understanding, the present invention is further described below in conjunction with the accompanying drawings.

[0034] See also Figure 1 and Figure 2 , Figure 1 is a schematic diagram of a monitoring system for the work done by a drilling wire rope provided by an embodiment of the present invention, Figure 2 yes Figure 1 Schematic diagram of the explosion-proof main unit 1. The drilling rig includes a crown block pulley block 3, a wire rope 4, a winch drum 5, a dead rope fixer 7, a traveling block pulley block 9, a large hook 10 and a drilling tool 11. The monitoring system for the work done by the drilling wire rope provided in the embodiment of the present invention includes an explosion-proof main unit 1, a winch encoder 6 and a hanging weight sensor 8, wherein the explosion-proof main unit 1 has a data display module 101, a key control module 102 and a data storage and retrieval module 108, the winch encoder 6 is installed on the air guide interface at the low speed end of the winch drum 5, and the hanging weight sensor 8 is installed on the tee at the hydraulic signal output end of the dead rope fixer 7, and the winch encoder 6 is connected to the large hook height interface 107 of the explosion-proof main unit 1 through a signal cable 2, and the hanging weight sensor 8 is connected to the large hook load interface 106 of the explosion-proof main unit 1 through a signal cable 2.

[0035] In this embodiment, the explosion-proof host 1 is a rectangular functional all-in-one machine, the outer shell is made of stainless steel explosion-proof material, the LCD screen is embedded in the explosion-proof shell, and there is a single-chip integrated module to implement data collection, conversion, processing and transmission. Functionally, the winch encoder 6 is used to measure the height H of the big hook, and then obtain its change ΔH within the time period t (preset time interval), the hanging weight sensor 8 is used to measure the load G of the big hook, and the explosion-proof host 1 uses the set program to calculate the cumulative work done by the wire rope 4.

[0036] The program used by the explosion-proof host 1 includes a data table prepared in advance according to the drilling machine parameters, which is called a pre-made data table. The data in the pre-made data table includes the circumference L of the nth layer of large rope wrapped around one circle. n , the total displacement S of the traveling carriage corresponding to the nth layern , the starting pulse value P of the nth layer n , the height H of the big hook corresponding to the starting pulse of the nth layer n , and the slope k of the hook height pulse number curve corresponding to the nth layer n and intercept b n , the calculation formulas for each data are:

[0037]

[0038]

[0039]

[0040]

[0041]

[0042]

[0043] Where D is the diameter of the winch drum 5, d is the diameter of the large rope, B is the length of the drum of the winch drum 5, N is the number of large rope strands, P is e is the number of pulses for releasing the large rope, P r is the number of pulses per circle, C is the starting layer, and q is the starting circle.

[0044] Taking a drilling rig as an example, the drum diameter is 770mm, the drum body length is 1320mm, the main rope diameter is 38mm, the main rope strands are 12, the main rope emptying pulse number is 9000, the pulse number per circle is 48, the starting layer number is 2, and the starting circle number is 15. According to these parameters and the above calculation formula, the built-in software of the explosion-proof host 1 will automatically generate the corresponding prefabricated data table, as shown in the following table.

[0045]

[0046]

[0047] The explosion-proof host 1 is installed at a suitable position on the drilling platform and connected to the power supply through the working power supply interface 105. When the wire rope 4 moves up and down by pulling the drilling tool 11 through the hook 10, the winch encoder 6 collects the pulse signal of the rotation angle and direction of the winch drum 5, and obtains the corresponding digital signal after processing by the electronic circuit, that is, the real-time pulse value P. On the one hand, the explosion-proof host 1 obtains the real-time pulse value P measured by the winch encoder 6 through the signal cable 2, and on the other hand, it obtains the real-time hook load G measured by the hanging weight sensor 8 through the signal cable 2. Combined with the above prefabricated data table, the monitoring method of the drilling wire rope work provided by the present invention is introduced as follows:

[0048] Firstly, according to the prefabricated data table and the real-time pulse value P, the real-time rope layer corresponding to the pulse value is found.

[0049] like Figure 1 As shown, assuming that the wire rope 4 is moving upward through the big hook 10 to pull the drilling tool 11, the time period t is 2 seconds, and the real-time pulse value P increases from 12315 to 12340. n It can be found from the column that the real-time rope layer corresponding to 12315 and 12340 is the 3rd layer.

[0050] Then, according to the prefabricated data table and the real-time rope layer, the slope k of the hook height pulse number curve corresponding to the rope layer is obtained. n and intercept b n .

[0051] From the number of layers in the prefabricated data table above, we can find that the slope k n is 0.005125, the intercept b n It is -58.564.

[0052] Then, by calculating H = P·k n +b n The real-time large hook height H is calculated, and then the change ΔH of the real-time large hook height H within the time period t is obtained.

[0053] Through calculation, it can be known that in this embodiment, the real-time large hook height H value increases from 4.550m to 4.678m in time period t, that is, the ΔH value of this process is 0.128m.

[0054] Finally, the cumulative work W of the drilling wire rope is calculated by the formula W=∑(μ×G×ΔH) to achieve monitoring, where μ is the unit conversion coefficient between kilonewton-meters and ton-kilometers.

[0055] The hook load G value in a sufficiently short time can be regarded as a constant value. In this embodiment, it is assumed that the hook load G in time period t is 1100 kN. According to the formula, the work done by the wire rope 4 in this process can be calculated to be 0.141 t·km. It is accumulated to the total work done before time period t to obtain the accumulated work W of the wire rope 4.

[0056] In order to make it easier for the staff to understand the accumulated work W of the wire rope 4, the accumulated work W can be displayed in real time on the monitoring screen. For example, in this embodiment, the explosion-proof host 1 has an embedded data display module 101, and the accumulated work W is displayed in real time using the data display module 101.

[0057] In addition, in order to strengthen the monitoring of the wire rope 4, the accumulated work W can also be wirelessly transmitted to a third-party shared device in a common well site information transmission standard format. For example, in this embodiment, the explosion-proof host 1 has a wireless transmission module 104, and the wireless transmission module 104 can be used to transmit data to a third-party shared device.

[0058] In order to remind the drilling engineer to perform the sliding cutting operation on the rope in time, the monitoring method may also include sending out an audible and visual alarm signal when the accumulated work amount W reaches the set alarm threshold. For example, in this embodiment, the audible and visual alarm module 103 is embedded in the shell of the explosion-proof host 1 through a thread. When the accumulated work amount W reaches the set alarm threshold, the audible and visual alarm module 103 is started and sends out an audible and visual alarm signal to warn the drilling engineer to slide and cut the rope in time.

[0059] In addition, after the sliding operation is completed, the system of the explosion-proof host 1 automatically generates the rope sliding record data and saves it in the data storage and retrieval module 108 for query and retrieval. At the same time, the monitoring system is re-initialized, and the accumulated work W is automatically reset to zero, and the next round of monitoring and alarm process is entered. For different drilling rigs, the system time, drilling rig parameters, alarm thresholds, etc. of the explosion-proof host 1 are set and adjusted through the key control module 102.

[0060] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to the embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for monitoring the work done by a drilling wire rope, characterized in that: include: Obtain the real-time pulse value P measured by the winch encoder on the air guide interface at the low-speed end of the winch drum, find the real-time rope layer corresponding to the pulse value according to the prefabricated data table and the real-time pulse value P, and find the slope k of the large hook height pulse number curve corresponding to the rope layer according to the prefabricated data table and the real-time rope layer n and intercept b n , by calculating the formula H = P·k n +b n The real-time hook height H is calculated; Obtain the real-time hook load G measured by the hanging weight sensor on the tee at the hydraulic signal output end of the dead rope anchor; The cumulative work W of the drilling wire rope is calculated by the calculation formula W=∑(μ×G×△H) to achieve monitoring, where △H is the change in the real-time hook height H calculated twice adjacently, and μ is the unit conversion coefficient between kilonewton-meter and ton-kilometer; The data in the prefabricated data table include the circumference L of the nth layer of large rope wrapped around one circle n , the total displacement S of the traveling carriage corresponding to the nth layer n , the starting pulse value P of the nth layer n , the height H of the big hook corresponding to the starting pulse of the nth layer n , and the slope k corresponding to the nth layer n and the intercept b n , the calculation formulas for each data are: Where D is the diameter of the winch drum, d is the diameter of the main rope, B is the length of the winch drum, N is the number of main rope strands, P is e is the number of pulses for releasing the large rope, P r is the number of pulses per circle, C is the starting layer, and q is the starting circle.

2. The monitoring method according to claim 1, characterized in that: It also includes displaying the accumulated work amount W on a monitoring screen in real time.

3. The monitoring method according to claim 2, characterized in that: The method also includes wirelessly transmitting the accumulated work amount W to a third-party shared device in a universal wellsite information transmission standard format.

4. The monitoring method according to claim 2 or 3, characterized in that: It also includes sending out an audible and visual alarm signal when the accumulated work amount W reaches a set alarm threshold.

5. A monitoring system for the work done by a drilling wire rope, characterized in that: The method for monitoring the work done by a drilling wire rope according to any one of claims 1 to 4 comprises: A winch encoder, wherein the winch encoder is installed on the air guide interface at the low-speed end of the winch drum; A hanging weight sensor, the hanging weight sensor is installed on the tee of the hydraulic signal output end of the dead rope fixer; The explosion-proof host has a data display module, a button control module and a data storage and retrieval module. The winch encoder is connected to the large hook height interface of the explosion-proof host through a signal cable, and the hanging weight sensor is connected to the large hook load interface of the explosion-proof host through a signal cable.

6. The monitoring system according to claim 5, characterized in that: The explosion-proof host has a wireless transmission module.

7. The monitoring system according to claim 6, characterized in that: The explosion-proof host has an audible and visual alarm module.

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