CN110763593A - Rheological property monitoring device of drilling fluid - Google Patents

Abstract

The invention provides a rheological monitoring device for drilling fluid, comprising: a tank body, a detection device, a driving device, a moving body, a rotational viscometer and a data processing device arranged in a diversion groove; the detection device is used for When detecting that the stirring member of the rotational viscometer is inserted into the drilling fluid in the tank body, a first signal is sent to the driving device and the rotational viscometer; the driving device is used to drive the moving body along the moving vertically, and: if the first signal is received when the moving body is driven to move, stop driving the moving body to move; the rotational viscometer is used for, if receiving the first signal, Then, the stirring member is driven to rotate, and the rotational speed information of the stirring member is collected. The present invention realizes the automatic implementation of drilling fluid rheological monitoring. Compared with manual monitoring, the present invention can prevent testers from entering the monitoring site, thereby effectively ensuring the safety of testers.

Description

Rheological monitoring device for drilling fluid

technical field

The invention relates to the field of petroleum exploitation, in particular to a rheological monitoring device of drilling fluid.

Background technique

Drilling fluid is a general term for various circulating fluids that meet the needs of drilling work with various functions during the drilling process. During the drilling process, the rheology of the drilling fluid will change. If the rheology is not good, it may lead to the collapse of the wellbore, the intrusion of drilling and pumping, etc., which will bring safety hazards.

In the prior art, the rheology can be monitored manually by measuring personnel, and the drilling fluid can be sampled, analyzed and evaluated manually.

However, the hydrogen sulfide contained in the drilled stratum, a large amount of gas intrusion, extreme weather and other reasons may cause danger to the health of the surveyors and even the life zone, and the safety is not good.

SUMMARY OF THE INVENTION

The invention provides a rheological monitoring device for drilling fluid to solve the problem of poor safety of manual monitoring.

According to a first aspect of the present invention, a rheological monitoring device for drilling fluid is provided, comprising: a tank body, a detection device, a driving device, a moving body, a rotational viscometer and a data processing device arranged in a diversion groove; The driving device and the rotational viscometer are both connected to the detection device; the detection device and the rotational viscometer are installed on the moving body; the data processing device is connected to the rotational viscometer;

The detection device is used for sending a first signal to the driving device and the rotational viscometer when detecting that the stirring member of the rotational viscometer is inserted into the drilling fluid in the tank body;

The driving device is used to drive the moving body to move in the vertical direction, and: if the first signal is received when the moving body is driven to move, stop driving the moving body to move;

The rotational viscometer is configured to drive the stirring member to rotate if the first signal is received, collect rotational speed information of the stirring member, and: send the rotational speed information to the data processing device;

The data processing device is used for determining the rheological parameter of the drilling fluid according to the rotational speed information.

Optionally, the driving device includes a vertical guide rail, a motor and a transmission assembly; the moving body is fixedly connected to the transmission assembly; the motor is used to drive the transmission assembly to move along the guide rail, and the The position of the guide rail relative to the groove body is fixed.

Optionally, the rheological monitoring device further includes a connecting rod, the detection device is arranged on the connecting rod, and the connecting rod is connected to the moving body.

Optionally, the rheology monitoring device further includes a cleaning device, and the cleaning device is installed on the moving body;

The detection device is further configured to send a second signal to the cleaning device when it is detected that the rotational viscometer moves to a preset height;

The cleaning device is configured to spray cleaning liquid to the stirring member upon receiving the second signal.

Optionally, a filter screen is provided on one side of the tank body, and the filter screen is used to filter the drilling fluid entering the tank body from the diversion tank.

Optionally, the filter screen is perpendicular to the diversion direction of the diversion groove.

Optionally, the rheological parameters include at least one of the following: dynamic shear force, apparent viscosity, plastic viscosity, and initial shear force.

Optionally, the rotational viscometer is a six-speed rotational viscometer.

Optionally, the data processing device is further configured to control the frequency of collecting and/or outputting the rotational speed information by the rotational viscometer according to the rotational speed information.

Optionally, the rheological monitoring device further includes a memory, and the data processing device is further connected with the memory, so as to use the memory to store the rheological parameter and/or the rotational speed information.

The device for monitoring the rheology of drilling fluid provided by the present invention sends a message to the driving device and the rotational viscometer when the detection device detects the drilling fluid in which the stirring part of the rotational viscometer is inserted into the tank. a first signal; and the driving device stops driving the moving body to move when receiving the first signal, and the rotational viscometer drives the stirring member to rotate when receiving the first signal, so as to realize drilling Compared with manual monitoring, the automatic implementation of liquid rheological monitoring can prevent testers from entering the monitoring site, thereby effectively ensuring the safety of testers.

In the present invention, the rotational speed information is also sent to the data processing device through the rotational viscometer, and the data processing device is configured to determine the rheological parameters of the drilling fluid according to the rotational speed information, so as to realize the Feedback of rotational speed information associated with denaturation, and determination of current rheology.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic structural diagram 1 of a rheological monitoring device for drilling fluid in an embodiment of the present invention;

FIG. 2 is a second structural schematic diagram of a rheological monitoring device for drilling fluid in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram 1 of a rheological monitoring device for drilling fluid in another embodiment of the present invention;

4 is a schematic diagram of the relationship between a speed setting value and a speed measurement value in an embodiment of the present invention;

5 is a second structural schematic diagram of a rheological monitoring device for drilling fluid in another embodiment of the present invention;

FIG. 6 is a third structural schematic diagram of a rheological monitoring device for drilling fluid in another embodiment of the present invention.

In the picture:

100-Rheological monitoring device of drilling fluid;

110 - detection device;

120 - drive unit;

130 - rotational viscometer;

131 - stirring part;

140 - data processing device;

150 - mobile body;

160 - cleaning device;

170-filter;

180 - tank body;

190 - connecting rod.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The terms "first", "second", "third", "fourth", etc. (if present) in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to Describe a particular order or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

The technical solutions of the present invention will be described in detail below with specific examples. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

Drilling fluid, specifically Drilling Fluid; it can be understood as a general term for various circulating fluids that meet the needs of drilling work with various functions during the drilling process. According to the composition, it can be divided into clear water, mud, non-clay phase rinse, emulsion, foam and compressed air. Clear water is the earliest drilling fluid that requires no treatment and is easy to use. It is suitable for complete rock formations and areas with sufficient water sources. Mud is a widely used drilling fluid, which is mainly suitable for rock formations with unstable pore walls, such as loose, developed fractures, easy to collapse and drop blocks, and water swelling and spalling.

Rheology can be understood as referring to the deformation and flow properties of substances under the action of external forces. The viscosity of the fluid is different, and the quantitative relationship between the shear stress applied to the fluid and the shear deformation rate (shear rate) is also different. Thus, where the viscosity or viscosity of a fluid is known, it is also understood that its rheology can be directly or indirectly characterized.

Fig. 1 is a first structural schematic diagram of a drilling fluid rheological monitoring device in an embodiment of the present invention; Fig. 2 is a structural schematic diagram 2 of a drilling fluid rheological monitoring device in an embodiment of the present invention.

Please refer to FIGS. 1 and 2 , the drilling fluid rheological monitoring device 100 may include: a tank body 180 disposed in the diversion tank, a detection device 110 , a driving device 120 , a moving body 150 , a rotational viscometer 130 and a data processing device 140; the driving device 120 and the rotational viscometer 130 are both connected to the detection device 110; the detection device 110 and the rotational viscometer 130 are installed on the moving body 150; the data processing device 140 is connected to the The rotational viscometer 130 is attached.

The detection device 110 is configured to send a first signal to the driving device and the rotational viscometer when detecting that the stirring member of the rotational viscometer is inserted into the drilling fluid in the tank;

The driving device 120 is used for driving the moving body to move in the vertical direction, and: if the first signal is received when the moving body is driven to move, stop driving the moving body to move;

The rotational viscometer 130 is configured to drive the stirring member to rotate if receiving the first signal, collect rotational speed information of the stirring member, and: send the rotational speed information to the data processing device;

The data processing device 140 is configured to determine the rheological parameter of the drilling fluid according to the rotational speed information.

The rotational viscometer 130 can be understood as a viscometer having a stirring member 131 and capable of driving the stirring member 131 to rotate. Through the rotational viscometer, the stirring member 131 can be driven to rotate, and the rotational speed information of the stirring member 131 can be measured. The rotational speed is related to the rheology, that is, the rotational speed information is related to the rheological parameters. Therefore, the acquisition of the rotational speed information can also be understood. For a learning of rheology.

In one embodiment, the rotational viscometer 130 may be a digital six-speed rotational viscometer, and its power part may be a numerically controlled stepping motor, that is, a rotary instrument powered by a motor. It can reflect the speed information in the dial, and can also output the speed information.

Specifically, the rotational speed information may include:

The actual speed information of the shaft whose speed is set to 600 rpm;

The actual speed information of the shaft whose speed is set to 300 rpm;

The actual speed information of the shaft whose speed is set to 200 rpm;

The actual speed information of the shaft whose speed is set to 100 rpm;

The actual speed information of the shaft whose speed is set to 6 rpm, and: the actual speed information of the shaft whose speed is set to 6 rpm.

The detection device 110 is configured to send a first signal to the driving device 120 and the rotational viscometer 130 when detecting that the stirring member 131 of the rotational viscometer 130 is inserted into the drilling fluid in the tank body 180 .

The first signal can be understood as any type generated by detecting that the stirring member 131 is inserted into the drilling fluid. Due to the different sending objects, the representation form of the first signal may have various forms, but they can all be described as the first signal, and then , the signals received by the driving device 120 and the rotational viscometer 130 may be different or the same.

In one embodiment, since the stirring member 131 and the detection device 110 are both installed on the moving body 150, the three can move synchronously. When the stirring member 131 is inserted into the drilling fluid, part or all of the detection device 110 can also enter the drilling fluid or contact the drilling fluid. The drilling fluid and, in turn, the detection device 110 may be used to trigger the generation of the first signal when part or all of it enters the drilling fluid. In this embodiment, the detection device 110 may include a water contact detection component for generating a first signal when contact with the water surface is detected.

In another embodiment, since the stirring member 131 and the detection device 110 are both installed on the moving body 150, the three can move synchronously, and the detection device 110 can detect the displacement of the movement, and then determine the current position of the stirring member 131 according to the displacement, Further, it is compared with the position of the drilling fluid level detected by a fluid level detection component, and it is determined that the stirring component 131 is inserted into the drilling fluid, thereby triggering the first page. In this embodiment, the detection device 110 may include a displacement detection component for detecting the displacement and a first detection processing component, and the first detection processing component may be used to perform the above process.

In another embodiment, since the stirring member 131 and the detection device 110 are both installed on the moving body 150, the three can move synchronously, and the detection device 110 can detect the displacement of the movement, and then determine the current position of the stirring member 131 according to the displacement, If the current position exceeds a certain threshold, it is determined that the stirring shaft must be inserted into the drilling fluid, thereby triggering the first signal. In this embodiment, the detection device 110 may include a displacement detection component for detecting the displacement and a second detection processing component, and the second detection processing component may be used to perform the above process.

In another embodiment, the detection device 110 may collect an image of the stirring member 131, and then use the relationship between the liquid level in the image and the stirring member 131 to determine that the stirring member 131 is inserted into the drilling fluid, thereby triggering the first signal. In this embodiment, the detection device 110 may include an image acquisition component and a third detection processing component, and the third detection processing component may be used to perform the above process.

It can be seen that the detection device 110 of this embodiment can be applied to various detection methods, so as long as the detection of the insertion of the stirring member 131 into the drilling fluid is realized, it does not deviate from the scope of the present invention.

The data processing device 140 can be connected to the rotational viscometer 130 in any wired or wireless manner.

FIG. 4 is a schematic diagram of the relationship between the set value of the rotational speed and the measured value of the rotational speed in an embodiment of the present invention.

Through the data processing device 140, before the online monitoring of the six groups of drilling speed information, the three-point standard density can be used to verify the rheological reference value of the drilling fluid. Please refer to FIG. 4, and draw it as a function curve y=ax ² +bx +c; the ordinate represents the rotational speed setting value V ₁ , which is the target value of the rotational speed, and the abscissa represents the rotational speed measurement value V ₂ , which can be regarded as the rotational speed reading value that the instrument panel of the rotational viscometer 130 can output, a, The values of b and c can be obtained from the values of the three points calibrated by the standard density. After being loaded into the kernel program of rheological data acquisition, in the process of online monitoring of drilling fluid rheology, with the change of drilling fluid rheology, real-time can be adjusted according to the The measured value is subjected to functional interpolation on the curve y=ax ² +bx+c. At the same time, it can be converted into a standard value by a rheological converter, and the real-time drilling fluid rheological parameters can be obtained by adjusting the data acquisition and output interval. Variety.

Finally, the rheological model is selected, and the six sets of rotational speed information collected can be converted into required rheological parameters such as apparent viscosity, plastic viscosity, dynamic shear force, and initial shear force.

It can be seen that the data processing device 140 is further configured to control the frequency of collecting and/or outputting the rotational speed information by the rotational viscometer according to the rotational speed information. Specifically, for example, the faster the rotation speed, the higher the frequency of acquisition and/or the frequency of output.

FIG. 4 is a first structural diagram of a rheological monitoring device for drilling fluid in another embodiment of the present invention; FIG. 5 is a second structural schematic diagram of a drilling fluid rheological monitoring device in another embodiment of the present invention.

Referring to FIG. 4 , in one embodiment, the rheological monitoring device may further include a connecting rod 190 , the detection device 110 is disposed on the connecting rod, and the connecting rod 190 is connected to the moving body 150 . Furthermore, the detection device 110 can move together with the connecting rod 190 and the moving body 150 .

Furthermore, if the detection device 110 is used to trigger the generation of the first signal when part or all of it enters the drilling fluid, the position of the detection device 110 and the stirring member 131 are matched, so that it can be effectively found in time that the stirring member 131 has been inserted into the drilling fluid . If the detection is performed in other manners to generate the first signal, it may also be beneficial to make the detection more accurate.

Referring to FIG. 4, in one embodiment, the driving device 120 includes a vertical guide rail 121, a motor 122 and a transmission assembly (not shown); the moving body 150 is fixedly connected to the transmission assembly; The motor 122 is used to drive the transmission assembly to move along the guide rail, and the position of the guide rail 121 relative to the groove body 180 is fixed.

In one embodiment, the transmission assembly may be a lead screw nut assembly, the output shaft of the motor 122 drives the lead screw in the lead screw nut assembly, and the position of the lead screw may be fixed relative to the guide rail 121, or the lead screw may be the guide rail 121 itself , the nut of the screw nut assembly can be relatively fixed with the position of the moving body 150, and then the displacement of the nut along the length direction of the screw can be realized by rotating the nut on the screw rod, thereby driving the movement of the moving body 150 and its upper parts.

In another embodiment, the transmission assembly can also be a rack and pinion assembly, the output shaft of the motor 122 drives the gear in the rack and pinion assembly, the position of the rack can be fixed relative to the guide rail 121, or the rack can be the guide rail 121 itself , the gear of the rack and pinion assembly can be relatively fixed with the position of the moving body 150, and then the gear meshing with the rack realizes the displacement change of the gear along the length of the rack, thereby driving the movement of the moving body 150 and its upper components. It can be seen that, in this embodiment, the motor can also move together with the gear and the moving body 150 .

Please refer to FIG. 4 and FIG. 5 , in one embodiment, the rheological monitoring device further includes a cleaning device 160 , and the cleaning device 160 is installed on the moving body 150 ;

The detection device 110 is further configured to send a second signal to the cleaning device 160 when it is detected that the rotational viscometer 130 moves to a preset height;

The cleaning device 160 is configured to spray cleaning liquid to the stirring member 131 upon receiving the second signal.

The cleaning liquid may specifically be water, therefore, the cleaning device 160 may be configured with a water source or connected to a water source, and then the water in the water source may be used for cleaning.

Detection of preset heights:

In one embodiment, a displacement sensor or a position sensor may be used for detection, that is, the detection device 110 may include a displacement sensor or a position sensor, and if a preset position is reached, the second signal may be triggered.

In another embodiment, a touch sensor may also be used, and further, a touch member for being touched at a specific height may be provided on the guide rail 121 , that is, the detection device 110 may include a touch sensor; When moving, if the preset height is reached, the touch sensor can touch the touch member, thereby triggering the second signal.

It can be seen that the detection device 110 of this embodiment can be applied to various detection methods, so as long as the detection of the preset height is realized, it does not deviate from the scope of the present invention.

FIG. 6 is a third structural schematic diagram of a rheological monitoring device for drilling fluid in another embodiment of the present invention.

Referring to FIG. 6 , in a specific implementation process, the detection device 110 may include a first detection part 111 , a second detection part 112 and a communication part 113 .

The first detection part 111 is used to detect whether the stirring part 131 is inserted into the drilling fluid; if so, send a first signal to the communication part 113 .

The second detection part 112 is used to detect whether the rotational viscometer 130 moves to a preset height; if so, send a second signal to the communication part 113 .

When the communication part 113 receives the first signal, it can send the first signal to the rotational viscometer 130 and the driving device 120 ; when it receives the second signal, it can send the second signal to the cleaning device 160 . At the same time, the communication component may also perform further processing on the signal, such as filtering, amplification, noise reduction, and the like.

The first detection component can be located at the lower end of the connecting rod 190 , and the upper end of the connecting rod 190 is connected to the moving body 150 .

Through the above embodiments, the triggering of the cleaning of the stirring member 131 can be realized, and then the stirring member 131 can be cleaned in time to ensure the cleanliness of the equipment, which can help to improve the accuracy of the control process and detection, and avoid uncleaning and clearing. Detection and control have adverse effects.

The cleaning device 160 may include a through pipe through which the cleaning liquid can flow and a liquid pump disposed in the through pipe, and the detection device 110 may output a second signal to the liquid pump to trigger the opening of the liquid pump. Jet and flow provide power.

Referring to FIG. 4 , in one embodiment, a filter screen 170 is provided on one side of the tank body 180 , and the filter screen 170 is used to filter the drilling fluid entering the tank body 180 from the diversion tank. filter. The filter screen 170 may be perpendicular to the guide direction of the guide groove.

In addition, the mobile body 150 can be configured with any structure for installing the detection device 110 and the rotational viscometer 130, and at the same time, it can also be configured with a line structure that can realize the fixation and safety protection of the communication line, and the line structure can be, for example, a hole with slot.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", " "Left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential" and other indications of orientation or positional relationship are based on the drawings The shown orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated position or the original must have a specific orientation, a specific structure and operation, and therefore should not be construed as a limitation of the present invention. limit.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or It can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, and it can make the internal communication of two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature is directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (10)

1. A drilling fluid rheology monitoring device, comprising: the device comprises a groove body, a detection device, a driving device, a mobile body, a rotational viscometer and a data processing device, wherein the groove body is arranged in a diversion trench; the driving device and the rotational viscometer are both connected with the detection device; the detection means and the rotational viscometer are mounted to the moving body; the data processing device is connected with the rotational viscometer;

the detection device is used for sending a first signal to the driving device and the rotational viscometer when the stirring component of the rotational viscometer is detected to be inserted into the drilling fluid in the groove body;

the driving device is used for driving the moving body to move along the vertical direction, and the driving device is used for: if the first signal is received when the moving body is driven to move, stopping driving the moving body to move;

the rotational viscometer is used for driving the stirring component to rotate if receiving the first signal, collecting the rotating speed information of the stirring component, and: sending the rotation speed information to the data processing device;

and the data processing device is used for determining the rheological parameters of the drilling fluid according to the rotating speed information.

2. A rheological monitoring device according to claim 1 wherein the drive means comprises a vertically oriented guide rail, a motor and transmission assembly; the movable body is fixedly connected with the transmission assembly; the motor is used for driving the transmission assembly to move along the guide rail, and the position of the guide rail relative to the groove body is fixed.

3. A rheological monitoring device according to claim 1 further comprising a connecting rod, wherein the detection device is disposed on the connecting rod, and the connecting rod is connected to the movable body.

4. A rheological monitoring device according to any one of claims 1 to 3 further comprising a cleaning device mounted to the moving body;

the detection device is also used for sending a second signal to the cleaning device when the rotational viscometer is detected to move to a preset height;

and the cleaning device is used for spraying the cleaning liquid to the stirring component if the second signal is received.

5. A rheological monitoring device according to any one of claims 1 to 3 wherein the tank is provided with a filter screen on one side for filtering drilling fluid entering the tank from the diversion trench.

6. A rheological monitoring device according to claim 5, wherein the screen is perpendicular to the flow direction of the flow guide slots.

7. A rheological monitoring device according to any one of claims 1 to 3 wherein the rheological parameters include at least one of: dynamic shear force, apparent viscosity, plastic viscosity, and shear force.

8. The apparatus of any one of claims 1 to 3, wherein the rotational viscometer is a six-speed rotational viscometer.

9. A rheological monitoring device according to any one of claims 1 to 3 wherein the data processing means is further adapted to control the frequency at which the rotational viscometer collects and/or outputs the rotational speed information based on the rotational speed information.

10. A rheological monitoring device according to any one of claims 1 to 3 further comprising a memory, the data processing device being further connected to the memory for storing the rheological parameter and/or the rotational speed information using the memory.

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