CN214118169U - Control device for optimizing dropping speed of drilling tool - Google Patents

Abstract

The utility model relates to a controlling means of drilling tool whereabouts speed optimization, this controlling means includes: the device comprises a controller for outputting a drilling tool reference falling speed control instruction, a speed measuring sensor connected with the controller and used for detecting the actual falling speed of the drilling tool, a drilling parameter sensor used for detecting well deviation, a depth sensor used for detecting the falling depth of the drilling tool and a man-machine interaction device. The utility model discloses a controller can export the drilling tool and refer to falling speed control instruction according to the parameter of the actual falling speed parameter of drilling tool, well deviation parameter and drilling tool falling depth parameter and the input of human-computer interaction device that each detecting element detected, makes the drilling tool fall according to certain reference falling speed, stops the influence of the mode of drilling down of the free fall body to the drilling tool life-span.

Description

Control device for optimizing dropping speed of drilling tool

Technical Field

The utility model relates to a drilling equipment technical field, concretely relates to controlling means of drilling tool whereabouts speed optimization.

Background

The winch is used as a lifting system of the drilling machine, and the drilling tool is driven to lift through the hook, so that the drilling is carried out under the drilling process. In the actual operation process, the driller usually adopts the free fall to transfer hook and drilling tool to reduce the auxiliary time, realize going down the brill at the fastest speed, this kind of mode causes wearing and tearing to each component of drilling tool easily, leads to the life greatly reduced of drilling tool, has promoted probing production running cost.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a controlling means of drilling tool whereabouts speed optimization.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

a control device for optimizing drill drop velocity, comprising: the device comprises a controller for outputting a drilling tool reference falling speed control instruction, a speed measuring sensor connected with the controller and used for detecting the actual falling speed of the drilling tool, a drilling parameter sensor used for detecting well deviation, a depth sensor used for detecting the falling depth of the drilling tool and a man-machine interaction device.

The utility model has the advantages that: the controller can output a drilling tool reference falling speed control instruction according to the actual falling speed parameter, the well deviation parameter, the drilling tool falling depth parameter and the parameter input by the man-machine interaction device of the drilling tool detected by each detection element, so that the drilling tool falls at a certain reference falling speed, and the influence of the free falling body on the service life of the drilling tool is avoided.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the speed measuring sensor adopts an encoder or a velocimeter.

Furthermore, the drilling parameter sensor adopts an inclinometer or MWD (measurement while drilling).

Further, the depth sensor employs an encoder.

Further, the human-computer interaction device adopts a touch screen.

Drawings

Fig. 1 is a block diagram illustrating a control device for optimizing a dropping speed of a drilling tool according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a rig hoist system.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Fig. 1 is a block diagram of a control device for optimizing a dropping speed of a drilling tool according to an embodiment of the present invention, as shown in fig. 1, the control device includes: the device comprises a controller for outputting a drilling tool reference falling speed control instruction, a speed measuring sensor connected with the controller and used for detecting the actual falling speed of the drilling tool, a drilling parameter sensor used for detecting well deviation, a depth sensor used for detecting the falling depth of the drilling tool and a man-machine interaction device.

Specifically, as shown in fig. 2, which is a schematic structural diagram of a lifting system of a drilling machine, a control system drives a winch motor, the winch motor drives a winch drum 21, the winch drum 21 drives a hook 22 through a steel wire rope, and the hook 22 drives a drilling tool. The actual falling speed of the drilling tool can be obtained by a speed measuring sensor of a drilling machine lifting system to obtain a real-time value, the speed measuring sensor can be realized by adding an encoder or a non-contact type speed measuring instrument on a driving motor of a winch or a winch drum 21, in addition, the actual speed of the drilling tool can also be directly obtained by a control system of the drilling machine lifting system, and the method needs to carry out speed conversion on the measured actual speed because an asynchronous motor has slip rate and a non-direct-drive structure adopts a speed change mechanism such as a gear chain and the like to have speed loss.

Hole deviation can be obtained through well logging data measured by a drilling parameter sensor, for example, a drilling site is provided with an inclinometer, most of the inclinometers are multi-point inclination measurement (for example, one well deviation data per 100 meters), so that the inclination of different depths of a well depth can be obtained after one-time inclination measurement, and the point-shaped discontinuous well deviation data can be obtained by using the inclinometer for inclination measurement. However, if the MWD measurement while drilling system is equipped in the drilling process, continuous data of the well depth gradient can be obtained in the drilling process, and the obtaining is easy.

The falling depth of the drilling tool can be obtained through real-time data of the height of a hook on a drilling site, the obtained modes are various, the number of the rope of the steel wire rope, the diameter of the steel wire rope and the diameter of the steel wire rope can be calculated by adding an encoder on a winch drum 21 or a driving motor of a drilling machine lifting system, and the falling depth of the drilling tool can also be calculated through a slow wheel installation encoder on a crown block of the drilling machine.

The man-machine interaction device is used for inputting data such as drilling tool parameters and drilling fluid parameters. The parameters of the drilling tool, including the type of the drill bit, the diameter of the drill bit and the like, are known data and can be input according to the actually used drilling tool, the diameter of the drill bit is usually selected according to the final hole diameter or the coring requirement in the drilling scheme, the drill bits with corresponding diameters and different stratums are selected, the drill bits with different materials are selected according to the hardness degree or the rock wear resistance degree of the stratums, and the bit pressures in different ranges are set according to the combination mode and the weight of the drill collar and the drill rod. The actual underground drilling fluid density is difficult to obtain, a calculated value of the drilling fluid density can be obtained by measuring the drilling fluid performance at an outlet and an inlet of a drilling project on site by considering methods such as sound waves, and a simulated drilling fluid density meter can be obtained by simulating in a laboratory according to different drilling fluid formulas, different drilling fluid liquid level heights and different rest times, so that reference and correction are provided for the actual situation.

Specifically, as shown in fig. 2, the structure of the downhole drilling tool is as follows: the drill bit 25, the drill collar 24, the drill rod 23 and the like are respectively arranged from the lower part to the upper part, and due to factors such as buoyancy of drilling fluid 27 in the well, resistance of the drilling fluid 27 to the drill bit 25 during the drilling process, friction between the drill bit 25 and the well wall and the like (hereinafter referred to as 'upper resistance'), the gravity of the upper drilling tool acts on the lower drilling tool during the drilling process, so that the bending phenomenon of the drilling tool in the hole is increased. If a free-fall drilling mode is adopted, the drilling tool rapidly descends in the well, and eccentric wear occurs between the drilling tool and the well wall due to the fact that the center line of the drilling tool deviates from the axis of the well, and the wear-through probability of the sleeve 26 is increased; meanwhile, the bending of the drilling tool aggravates the stress condition of the drilling string and the abrasion of the well wall to the drilling tool, so that the service life of the drilling tool is greatly reduced, the drilling quality is also reduced, and the drilling production and operation cost is improved.

In the embodiment of the utility model, the mathematical model of the actual falling speed of the drilling tool, the well deviation, the falling depth of the drilling tool, the type of the drilling bit, the diameter of the drilling bit and the density of the drilling fluid and the reference falling speed of the drilling tool can be pre-established, the external input parameters are input into the controller of the winch (which is a programmable controller matched with a frequency converter or other servo systems) to obtain the reference falling speed of the drilling tool, and then the torque, the rotating speed, the position and the electric parameters required by the driving motor of the winch are calculated, the controller executes the calculation information to effectively control the real-time output position, the power, the torque and the electric parameters of the driving motor of the winch, and further control the speed control operation of the drilling tool close to the key positions such as the well bottom or the hole diameter smaller, the inclined section of the well in the falling process, closed-loop control is adopted to realize the controllable variable speed drag type falling of the whole well, the variable speed operation of the whole falling process of the drilling tool can effectively reduce the self bending caused by the gravity in the falling process, reducing eccentric wear to drill rods, sleeves and well walls.

It should be noted that, when the above mathematical model is established, the mathematical relationship between the falling speed of the drilling tool and the bending of the drilling tool caused by the difference between gravity and upper resistance needs to be considered, including the friction of the bending and well deviation existing in the drilling process to the drilling tool, so as to optimize and obtain the optimal falling speed of different drilling tool combinations, and the optimal falling speed is output by the drilling machine winch control system, so that only tension exists among the drill bit, the drill collar and the drill rod, and no mutual pressure exists, so as to ensure that the drilling tool is not bent due to the difference between gravity and upper resistance in the drilling process to the maximum extent, and the influence of the drilling tool in the drilling mode of free falling on the well wall is avoided, thereby solving the problems of the self bending of the drilling tool and the quality of the well wall in the drilling process of the drilling tool. The method for establishing the relevant mathematical model can be realized by adopting the prior art such as a neural network model, fuzzy control and the like, and the embodiment does not give more details.

The man-machine interaction device can form a serialized interface according to effective strokes of different drilling towers, different well body structures and drilling processes, so that drilling engineering personnel can input related parameters conveniently, and automatic operation control is realized.

The control device can be independently placed in an electric control room on a drilling site, and can also be integrated with a winch driving motor under the condition of controlling the volume.

The embodiment of the utility model provides a control device of drilling tool falling speed optimization, the controller can export the drilling tool and refer to falling speed control instruction according to the parameter of the actual falling speed parameter of drilling tool, well deviation parameter and drilling tool falling depth parameter and the input of human-computer interaction device that each detecting element detected, makes the drilling tool fall according to referring to falling speed.

The reader should understand that in the description of this specification, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment of the present invention.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (5)

1. A control device for optimizing drill drop velocity, comprising: the device comprises a controller for outputting a drilling tool reference falling speed control instruction, a speed measuring sensor connected with the controller and used for detecting the actual falling speed of the drilling tool, a drilling parameter sensor used for detecting well deviation, a depth sensor used for detecting the falling depth of the drilling tool and a man-machine interaction device.

2. The control device for optimizing the falling speed of the drilling tool according to claim 1, wherein the tachometer sensor is an encoder or a tachometer.

3. The control device for optimizing the dropping speed of the drilling tool as claimed in claim 1, wherein the drilling parameter sensor is an inclinometer or MWD (measurement while drilling).

4. The control device for optimizing the falling speed of the drilling tool as claimed in claim 1, wherein the depth sensor adopts an encoder.

5. The control device for optimizing the falling speed of the drilling tool as claimed in claim 1, wherein the human-computer interaction device adopts a touch screen.

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