CN105952437B - Indoor experimental research device for friction resistance torque of tubular column in three-dimensional bending well - Google Patents
Indoor experimental research device for friction resistance torque of tubular column in three-dimensional bending well Download PDFInfo
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- CN105952437B CN105952437B CN201610444681.XA CN201610444681A CN105952437B CN 105952437 B CN105952437 B CN 105952437B CN 201610444681 A CN201610444681 A CN 201610444681A CN 105952437 B CN105952437 B CN 105952437B
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- 238000005452 bending Methods 0.000 title claims abstract description 13
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 24
- 239000003638 chemical reducing agent Substances 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/007—Measuring stresses in a pipe string or casing
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Abstract
The invention belongs to the technical field of tubular column mechanics, and particularly relates to an indoor experimental research device for tubular column friction torque in a three-dimensional bending well, which is used for optimizing a tubular column friction torque calculation model in the three-dimensional bending well and improving the tubular column friction torque in the three-dimensional bending well. The invention has the following characteristics that the rigidity and the size of the simulation pipe column are variable, the borehole curvature and the torsion angle of the simulation shaft are adjustable, axial and rotary motion can be generated, real-time monitoring and display of displacement, tension and pressure and torque can be realized, and various working conditions can be simulated.
Description
Technical Field
The invention belongs to the technical field of tubular column mechanics, and particularly relates to an indoor experimental research device for tubular column friction torque in a three-dimensional bending borehole, which is used for optimizing and improving a tubular column friction torque calculation model in the three-dimensional bending borehole.
Background
At present, drilling technologies such as horizontal wells, directional wells and the like are continuously developed and widely applied, but the problems restricting the development of the technologies are increasingly prominent, and the friction resistance torque of a pipe column is one of the key problems. After the pipe column is lowered to a bent well section, a large bending moment is generated due to the existence of the rigidity of the pipe column, in addition, the track of the well hole is an irregular space curve, and the pipe column can be in large-area contact with the well wall in the lowering process. When the pipe column is attached to the well wall, contact pressure exists between the pipe column and the well wall, when the pipe column moves, axial resistance and friction torque can be applied to the pipe column due to friction, so that axial load is increased, friction torque is increased, and particularly in a large-displacement well and a horizontal well, the large friction resistance and the friction torque exist due to the fact that the large-displacement well has the characteristics of a long horizontal displacement section, a large oblique angle and a long naked eye oblique section. The friction resistance and friction torque generated by the pipe column and the well wall have great influence on the drilling design, the drilling operation, the well cementing operation and the like. Therefore, accurate prediction of the friction and torque values is essential in well design for successful and economical drilling and completion.
The importance of the friction torque calculation model of the pipe string can be embodied in three phases of the drilling process: a design phase, in order to reduce the friction torque value, the model is used to optimize the well track; in the drilling process, the model is very effective in predicting the problems of well cleaning, possible drilling sticking and the like by combining with on-site real-time monitoring; in the completion phase, the model is used to analyze whether the casing string is run in unobstructed or not.
For a three-dimensional bent well section, at present, a plurality of theoretical models for calculating the friction torque of a pipe column exist, each method has different assumed conditions, the solving method is different, and results obtained by different calculation models are far away from each other and have larger deviation from the actual result, so that experimental research needs to be carried out on the friction torque of the pipe column in the three-dimensional bent well bore, and the friction torque calculation model of the pipe column in the three-dimensional bent well section is corrected and optimized through experimental analysis.
In the aspect of experiments, a pipe column simulation device is designed by Child and the like of British BP company, the stress state of a downhole pipe column is simulated through an indoor simulation experiment, the tension and the torque of the pipe column in the experiment are measured, the controlled variables of the experiment are few, and the persuasion of an analysis result is small.
Disclosure of Invention
The invention aims to overcome the problems and the defects of the existing theories and technologies at the present stage, provides an experimental device which can actually measure the friction torque of a pipe column in a three-dimensional bending well under the laboratory condition, researches the friction torque of the pipe columns with different sizes and different rigidities under the conditions of different well curvatures and different well torsional angles, optimizes or improves the existing theoretical model so as to provide a theoretical basis for the design and the field application of the drilling pipe column, and adopts the following technical scheme:
the device comprises a driving system, a measuring system, a simulation pipe column combined system and a fixing system which are respectively a servo motor, a loading lead screw, a feeding guide rail, a displacement sensor, a sliding frame, a tension pressure sensor, a torque sensor, a simulation pipe column, a simulation shaft, a fixed support, a shaft clamp, a connecting flange, a movable support, a fixed bottom plate, a simulation shaft bottom shell, a computer, a data processing device, a signal cable, a speed reducer, a linear bearing, a pipe column connecting joint, a pipe column connector, a mounting screw, a rolling bearing and a movable fixing clamp, wherein the driving system comprises two servo motors, a loading lead screw, a feeding guide rail, a sliding frame, a speed reducer, a linear bearing and a pipe column connecting joint, the front servo motors are connected with the loading lead screw through the speed reducer and are mounted on the mounting plate on one side of the feeding guide rail through the speed reducer, one side of the loading lead screw is fixed on an output shaft of the front speed reducer and is connected with one end of the sliding frame through a thread, and the sliding frame is mounted on a slide rail of the feeding guide rail through the linear bearing; before the simulation pipe column is used for an experiment, a simulation pipe column is connected with a pipe column connecting joint, then a servo motor in the front of a driving system is started, the servo motor drives a first section of simulation pipe column to be slowly sent into a simulation shaft, and then the servo motor is controlled to return to the initial position to repeat the action to carry out rotary propulsion on a second section of pipe column until all simulation pipe columns are completely installed into the simulation shaft; before the last section of simulation pipe column is finished, a pull pressure sensor and a torque sensor at the front part are installed, the torque sensor and the last section of simulation pipe column are connected, and then the last section of simulation pipe column is put in; in the running-in process, the servo motor at the front part can utilize the thread transmission between the loading screw rod and the sliding frame to realize the axial movement of the simulation pipe column, and the servo motor at the rear part can realize the rotary movement of the simulation pipe column.
The measuring system comprises a displacement sensor, two tension pressure sensors, two torque sensors, a computer, a data processing device and a signal cable, wherein the displacement sensor is arranged at the front part of the feeding guide rail, and the detection ends of the displacement sensor and the torque sensors point to the front end surface of the sliding frame; before finishing the last section of simulation tubular column, the front pulling pressure sensor and the front torque sensor are installed, the torque sensor and the last section of simulation tubular column are connected, the pulling pressure sensor, the torque sensor and the displacement sensor are connected with the data processing device and the computer through signal cables, the last section of simulation tubular column is put in again, the experiment phenomenon is observed in the experiment process, and the experiment data of the rotating speed, the thrust, the torque and the displacement are collected.
The simulation pipe column combination system comprises a simulation pipe column, a simulation shaft, a connecting flange, a simulation shaft bottom shell, a pipe column connector, a mounting screw and a rolling bearing, wherein the simulation pipe column can adopt ABS plastic and stainless steel, the pipe column adopting the ABS plastic is a solid cylinder with the outer diameter of 22mm and the length of 42cm, the pipe column adopting the stainless steel is a solid cylinder with the outer diameter of 12mm and the length of 45cm, adjacent simulation pipe columns are connected by threads, the simulation shaft can adopt two types of organic glass pipes and stainless steel pipes, the shaft structure of the simulation shaft is composed of a straight shaft section with the diameter of 2 meters, an arc section and a straight shaft section with the length of 1 meter, the connecting flanges are arranged at two ends of each shaft section, the adjacent shaft sections are connected by the connecting flanges, the front part of the simulation shaft bottom shell is fixed on a fixed support by a shaft hoop, the rear part of the simulation shaft bottom shell is fixed at the tail end of the simulation shaft by the mounting screw through the rolling bearing, and the outer side of the simulation shaft shell is mounted on a movable support by the movable fixed hoop; before the simulation shaft bottom shell is used for carrying out an experiment, a plurality of simulation shafts with specified curvature radius are connected into a complete required experiment shaft through connecting flanges, the simulation shaft at the front part is fixed on a fixed support through a shaft hoop, the simulation shaft at the rotatable part is fixed on a movable support after rotating downwards for a specific angle, then a simulation shaft bottom shell for completing the installation of parts and sensors is installed at the outlet of the simulation shaft at the tail end, and the movable support for fixing the simulation shaft bottom shell is fixed on a fixed bottom plate through bolts.
The fixing system comprises a fixing support, a shaft clamp, a movable support, a fixing bottom plate and a movable fixing clamp, wherein the fixing support is composed of multiple parts, is connected through bolts and is convenient to detach, and is fixed on the ground through expansion screws, the simulation shaft is installed on the upper part of the fixing support through the shaft clamp, the fixing bottom plate is fixed on the ground, a plurality of mounting holes of the movable support are formed in the fixing bottom plate, and the movable support is installed through bolts.
The invention has the following characteristics: by researching the friction torque of the pipe column under the conditions of different well bore curvatures and different torsion angles, a theoretical basis is provided for drilling design and field application; the simulation pipe column can change rigidity and size so as to realize simulation of different drilling pipe column and borehole combinations; the driving system can simulate three working states of rotating and propelling, only rotating and not propelling and only propelling and not rotating of the tubular column; the measuring system can sense and measure axial tension pressure, torque and axial displacement in real time and display the axial tension pressure, the torque and the axial displacement on a computer in real time; different working conditions such as tripping, drilling, rotary drilling, reaming and the like can be simulated.
Drawings
FIG. 1: the invention discloses a schematic overall structure diagram of an indoor experimental research device for friction torque of a tubular column in a three-dimensional bent well;
FIG. 2 is a schematic diagram: the invention discloses a structural schematic diagram of a driving system part in an indoor experimental research device for friction resistance torque of a tubular column in a three-dimensional bent borehole;
FIG. 3: the invention discloses a structural schematic diagram of a simulated well bottom part in an indoor experimental research device for friction resistance torque of a pipe column in a three-dimensional bent well hole.
Description of the symbols
1. The hydraulic simulation device comprises a servo motor, 2 a loading screw rod, 3 a feeding guide rail, 4 a displacement sensor, 5 a sliding frame, 6 a tension and pressure sensor, 7 a torque sensor, 8 a simulation pipe column, 9 a simulation shaft, 10 a fixed support, 11 a shaft hoop, 12 a connecting flange, 13 a movable support, 14 a fixed bottom plate, 15 a simulation shaft bottom shell, 16 a computer, 17 a data processing device, 18 a signal cable, 19 a speed reducer, 20 a linear bearing, 21 a pipe column connecting joint, 22 a pipe column connector, 23 a screw, 24 a rolling bearing and 25 a movable fixed hoop.
Detailed Description
The invention is further illustrated by the following figures and examples:
as shown in fig. 1-3, the device for indoor experimental study of friction torque of a tubular column in a three-dimensional bending well is integrally divided into four major parts, namely a servo motor 1, a loading screw 2, a feeding guide rail 3, a displacement sensor 4, a sliding frame 5, a pulling pressure sensor 6, a torque sensor 7, a simulation tubular column 8, a simulation well shaft 9, a fixed support 10, a well casing hoop 11, a connecting flange 12, a movable support 13, a fixed bottom plate 14, a simulation well bottom shell 15, a computer 16, a data processing device 17, a signal cable 18, a speed reducer 19, a linear bearing 20, a tubular column connecting joint 21, a tubular column connector 22, mounting screws 23, a rolling bearing 24 and a movable fixed hoop 25, wherein the driving system comprises the servo motor 1, the loading screw 2, the feeding guide rail 3, the sliding frame 5, the speed reducer 19, the linear bearing 20 and a tubular column connecting joint 21, the servo motors 1 are two in number, the servo motor 1 in the front part is connected with the loading screw 2 through the speed reducer 19 and mounted on a mounting plate on one side of the feeding guide rail 3 through the speed reducer 19, the servo motor 1 is connected with the linear bearing 20 and mounted on a tubular column connecting joint 21 through a threaded shaft 5, one side of the sliding guide rail 5, the sliding frame 5, the sliding shaft connecting joint 19 is mounted on the sliding frame 2, one side of the loading screw 2, and mounted on the linear bearing 2, the sliding guide rail 5, the sliding frame 5 through the sliding shaft connecting the sliding frame 19, the sliding shaft connecting the speed reducer 19, and mounted on the sliding frame 5; the measuring system comprises a displacement sensor 4, a tension and pressure sensor 6, a torque sensor 7, a computer 16, a data processing device 17 and a signal cable 18, wherein the displacement sensor 4 is arranged at the front part of the feeding guide rail 3, the detection end of the displacement sensor points to the front end surface of the sliding frame 5, the number of the tension and pressure sensor 6 and the number of the torque sensor 7 are two, one end of the tension and pressure sensor 6 at the front part is connected with a pipe column connecting joint 21, the other end of the tension and pressure sensor 6 at the rear part is connected with the torque sensor 7 at the upper part, the other end of the tension and pressure sensor 6 at the rear part is connected with the pipe column connecting joint 22, the torque sensor 7 at the lower part is respectively connected with the top and the bottom of the simulation pipe column 8, the data processing device 17 consists of an amplifier and a data acquisition module, is connected with the displacement sensor 4, the tension and pressure sensor 6 and the torque sensor 7 through the signal cable 18, and is connected with the computer 16 through a data line; the simulation pipe column combination system comprises a simulation pipe column 8, a simulation shaft 9, a connecting flange 12, a simulation shaft bottom shell 15, a pipe column connector 22, a mounting screw 23 and a rolling bearing 24, wherein the simulation pipe column 8 can adopt ABS plastics and stainless steel, wherein the pipe column adopting ABS plastics has the size of 22mm in outer diameter and 42cm long solid cylinders, the pipe column adopting stainless steel has the size of 45cm long solid cylinders with the size of 12mm in outer diameter, adjacent simulation pipe columns 8 are connected by threads, the simulation shaft 9 can adopt two types of organic glass pipes and stainless steel pipes, the shaft structure of the simulation shaft bottom shell consists of 2 meters of straight shaft sections, circular arc sections and 1 meter of straight shaft sections, the connecting flange 12 is arranged at two ends of each shaft section, the adjacent shaft sections are connected by the connecting flange 12, the front parts of the adjacent shaft sections are fixed on a fixed support 10 by a shaft hoop 11, the rear parts of the simulation shaft bottom shell are fixed on a movable support 13, the simulation shaft bottom shell 15 is provided with the pipe column connector 22 through the rolling bearing 24, the mounting screw 23 is fixed at the tail end of the simulation shaft 9, and the outer side of the simulation shaft bottom shell is mounted on the movable support 13 by a movable hoop 25; the fixing system comprises a fixed support 10, a shaft hoop 11, a movable support 13, a fixed bottom plate 14 and a movable fixed hoop 25, wherein the fixed support 10 consists of a plurality of parts which are connected through bolts so as to be convenient to detach and are fixed on the ground through expansion screws, a simulation shaft 9 is installed on the upper part of the fixed support by using the shaft hoop 11, the fixed bottom plate 14 is fixed on the ground and is provided with a plurality of installation holes for the movable support 13, and the movable support 13 is installed through the bolts.
Before the invention is used for experiment, firstly, a plurality of simulated mineshafts 9 with specified curvature radius are connected into a complete required experimental mineshaft through a connecting flange 12, the simulated mineshaft 9 at the front part is fixed on a fixed support 10 through a mineshaft hoop 11, the simulated mineshaft 9 at the rotatable part is fixed on a movable support 13 after rotating downwards for a specific angle, then a simulated shaft bottom shell 15 for completing the installation of parts and sensors is installed at the outlet of the simulated mineshaft 9 at the tail end, and the movable support 13 for fixing the simulated shaft bottom shell 15 is fixed on a fixed bottom plate 14 through bolts; connecting the simulation pipe column 8 with a pipe column connecting joint 21, starting a servo motor 1 at the front part of the driving system, driving a first section of simulation pipe column 8 to be slowly fed into the simulation shaft 9 by the servo motor 1, and controlling the servo motor 1 to return to the initial position to repeat the actions to carry out rotary propulsion of a second section of pipe column until all the simulation pipe columns 8 are completely installed into the simulation shaft 9; before the last section of simulation pipe column 8 is finished, installing the front pulling pressure sensor 6 and the front torque sensor 7, connecting the torque sensor 7 with the last section of simulation pipe column 8, connecting the pulling pressure sensor 6, the torque sensor 7 and the displacement sensor 4 with the data processing device 17 and the computer 16 through the signal cable 18, and then putting the last section of simulation pipe column 8; in the process of going into, the axial motion of simulation tubular column 8 is realized to the screw drive between anterior servo motor 1 available loading lead screw 2 and the sliding frame 5, and the rotary motion of simulation tubular column 8 can be realized to servo motor 1 at rear portion, observes the experiment phenomenon in the experimentation to gather rotational speed, thrust, moment of torsion, displacement experimental data, accomplish the data extraction back, analysis experimental data reachs the experiment conclusion.
Claims (3)
1. An indoor experimental research device for friction torque of a tubular column in a three-dimensional bending well is integrally divided into four parts, namely a driving system, a measuring system, a simulation tubular column combined system and a fixing system, which are respectively a servo motor (1), a loading screw rod (2), a feeding guide rail (3), a displacement sensor (4), a sliding frame (5), a tension pressure sensor (6), a torque sensor (7), a simulation tubular column (8), a simulation shaft (9), a fixing support (10), a shaft clamp (11), a connecting flange (12), a movable support (13), a fixing bottom plate (14), a simulation shaft bottom shell (15), a computer (16), a data processing device (17), a signal cable (18), a speed reducer (19), a linear bearing (20), a tubular column connecting joint (21), a tubular column connector (22), a mounting screw (23), a rolling bearing (24) and a movable fixing clamp (25), wherein the driving system comprises the servo motor (1), the loading screw rod (2), the feeding guide rail (3), the sliding frame (5), the speed reducer (19), the linear bearing (20) and the tubular column connecting joint (21), the servo motor (1) is connected with the loading screw rod (2), the servo motor (1) at the rear part is connected with a pipe column connecting joint (21) through the speed reducer (19) and is arranged on the mounting plate at one side of the sliding frame (5) through the speed reducer (19), one side of the loading screw rod (2) is fixed on an output shaft of the speed reducer (19) at the front part and is connected with one end of the sliding frame (5) through threads, and the sliding frame (5) is arranged on a slide rail of the feeding guide rail (3) through a linear bearing (20);
the measuring system comprises a displacement sensor (4), a tension pressure sensor (6), a torque sensor (7), a computer (16), a data processing device (17) and a signal cable (18), wherein the displacement sensor (4) is arranged at the front part of the feeding guide rail (3) and points a detection end to the front end surface of the sliding frame (5), the number of the tension pressure sensor (6) and the number of the torque sensor (7) are two, one end of the tension pressure sensor (6) at the front part is connected with a pipe column connecting joint (21), the other end of the tension pressure sensor (6) at the front part is connected with the torque sensor (7) at the upper part, one end of the tension pressure sensor (6) at the rear part is connected with a pipe column connector (22), the other end of the tension pressure sensor (6) at the rear part is connected with the torque sensor (7) at the lower part, and the torque sensors (7) are respectively connected with the top and the bottom of the simulation pipe column (8);
the data processing device (17) consists of an amplifier and a data acquisition module, is connected with the displacement sensor (4), the tension and pressure sensor (6) and the torque sensor (7) through a signal cable (18), and is connected with the computer (16) through a data line;
the simulation pipe column combination system comprises a simulation pipe column (8), a simulation shaft (9), a connecting flange (12), a simulation well bottom shell (15), a pipe column connector (22), a mounting screw (23) and a rolling bearing (24);
the simulation well bottom shell (15) is provided with a pipe column connector (22) through a rolling bearing (24), is fixed at the tail end of a simulation well shaft (9) by a mounting screw (23) at the lower part of the simulation well bottom shell, and is arranged on a movable bracket (13) by a movable fixed clamp (25) at the outer side of the simulation well bottom shell;
the fixing system comprises a fixing support (10), a shaft clamp (11), a movable support (13), a fixing bottom plate (14) and a movable fixing clamp (25), wherein the fixing support (10) is composed of multiple parts, is convenient to detach through bolt connection and is fixed on the ground through expansion screws, a simulation shaft (9) is installed on the upper part of the fixing support by using the shaft clamp (11), the fixing bottom plate (14) is fixed on the ground, a plurality of mounting holes of the movable support (13) are formed in the fixing bottom plate, and the movable support (13) is installed through bolts.
2. The indoor experimental research device for friction torque of the pipe column in the three-dimensional bending borehole of claim 1, wherein: the simulation pipe columns (8) are made of ABS plastic and stainless steel, wherein the pipe columns made of ABS plastic are solid cylinders with the outer diameters of 22mm and the lengths of 42cm, the pipe columns made of stainless steel are solid cylinders with the outer diameters of 12mm and the lengths of 45cm, and adjacent simulation pipe columns (8) are connected through threads.
3. The indoor experimental research device for friction torque of the pipe column in the three-dimensional bending borehole of claim 1, which is characterized in that: the simulation shaft (9) adopts two types of organic glass pipes and stainless steel pipes, the shaft structure of the simulation shaft consists of a straight shaft section with the length of 2 meters, an arc section and a straight shaft section with the length of 1 meter, connecting flanges (12) are arranged at two ends of each shaft section, adjacent shaft sections are connected through the connecting flanges (12), the front part of the simulation shaft is fixed on a fixed support (10) through a shaft hoop (11), and the rear part of the simulation shaft is fixed on a movable support (13).
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| CN201610444681.XA CN105952437B (en) | 2016-06-20 | 2016-06-20 | Indoor experimental research device for friction resistance torque of tubular column in three-dimensional bending well |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106442101B (en) * | 2016-10-11 | 2017-09-15 | 东北石油大学 | The bent analogue experiment installation of shaft column pressure torsional buckling and its experimental method |
| CN106840627B (en) * | 2017-01-18 | 2018-12-07 | 燕山大学 | Oil/gas well tubing string antifriction drop turns round tool performance experimental rig |
| CN112033658B (en) * | 2020-09-03 | 2022-05-27 | 西南石油大学 | System and method for testing supporting mechanism of drilling traction robot |
| CN113392483B (en) * | 2021-08-16 | 2021-10-19 | 中国石油集团川庆钻探工程有限公司 | Method and device for determining friction coefficient of shaft and method and device for determining friction resistance of shaft |
| CN114486229B (en) * | 2022-03-31 | 2022-06-21 | 山东普瑞思德石油技术有限公司 | Simulation tripping device applicable to multi-size tubular columns |
| CN115324546B (en) * | 2022-08-28 | 2023-09-08 | 重庆科技学院 | SAGD steam preheating achievement prediction method, simulation experiment device and simulation method thereof |
| CN115640759A (en) * | 2022-12-26 | 2023-01-24 | 成都捷科思石油天然气技术发展有限公司 | Drill jamming early warning method and system based on machine learning |
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