CN111964880A - Simulation test device and test method for motion state of bottom drilling tool assembly - Google Patents
Simulation test device and test method for motion state of bottom drilling tool assembly Download PDFInfo
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- CN111964880A CN111964880A CN201910547699.6A CN201910547699A CN111964880A CN 111964880 A CN111964880 A CN 111964880A CN 201910547699 A CN201910547699 A CN 201910547699A CN 111964880 A CN111964880 A CN 111964880A
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Abstract
The invention discloses a test device and a test method for simulating the motion state of a bottom drilling tool assembly, belonging to the technical field of oil-gas well string mechanics, comprising a test frame, a test bed, a shaft support, a sensor support, a servo motor, a simulation drill column, a simulation shaft bottom, a loading screw rod, a tension and pressure sensor, a displacement sensor, a torque sensor, a turbine reducer, a fixed pulley, a steel cable and the like, wherein the test frame is provided with the simulation drill column and the simulation shaft with different specifications and sizes and different materials, the motion state of the bottom drilling tool assembly is actually measured under the test condition by replacing the simulation drill column and the simulation shaft, the inclination angle of the test bed on the test frame can be adjusted by matching with a lifting system, the simulation drill columns with different sizes and different materials are restrained in the simulation shaft, the motion states under the conditions of different rotating speeds, different drilling, therefore, the movement rule of the drill string under different conditions is analyzed, and a theoretical basis is provided for the field control of the movement state of the drill string.
Description
Technical Field
The invention relates to the technical field of oil-gas well pipe column mechanics, in particular to a bottom drilling tool combination motion state simulation test device and a test method.
Background
In the process of oil exploration and development, well drilling is an indispensable basic link and has capital and technology intensive characteristics. The research on the mechanical properties of the drill string is an important component of modern drilling engineering theories and techniques. With the development of the drilling technology towards high-temperature and high-pressure wells, deep and ultra-deep wells, special process wells (including directional wells, horizontal wells, extended reach wells, wells with complex structures, cluster wells, underbalanced drilling, casing drilling and the like), and the like, higher requirements are provided for the research of the mechanical properties of the string, particularly the mechanical properties of a Bottom Hole-Assembly (BHA for short). A
In drilling operations, the stress state of the drill string is very complex, since the drill string is strictly confined within a narrow wellbore. In order to avoid fatigue damage of the drill string and reduce the occurrence of downhole accidents, the motion characteristics, particularly the transverse motion, of the drill string under different working conditions need to be determined. Lateral motion is believed to be the primary cause of BHA fatigue failure, wear, and hole diameter enlargement. However, it is difficult to truly reflect the vibration of the bottom hole tool either at the surface of the earth or as detected by a downhole measurement while drilling system, for example, the lateral motion of the drill string is drastically attenuated as it propagates from the bottom hole to the top hole.
Therefore, in order to deeply research the lateral motions of the BHA, analyze the motion rules of the BHA under different conditions and explain the motion mechanism of the BHA, it is necessary to further develop an indoor simulation test research on the mechanical properties of the bottom hole assembly, so as to select appropriate drilling parameters for field construction, reduce the damage motion and provide a theoretical basis for field control of the motion state of the BHA.
Disclosure of Invention
The invention provides a simulation test device and a simulation test method for the motion state of a bottom drilling tool assembly, aiming at effectively analyzing the motion rule of a drill column under different conditions under the constraint condition of a shaft and providing a theoretical basis for the motion state of the drill column in field control.
The specific technical scheme provided by the invention is as follows:
the invention provides a test device for simulating the motion state of a bottom hole assembly, which comprises a fixing system, a driving system, a simulation pipe column assembly system, a loading system, a measuring system and a lifting system, wherein the fixing system comprises a test stand, a test bed, a shaft support and a sensor support, the driving system comprises a servo motor and a control cabinet, the simulation pipe column assembly system comprises a simulation drill column and a simulation shaft, the simulation drill column is installed in the simulation shaft, the loading system comprises a simulation shaft bottom and a loading screw rod, the simulation shaft bottom comprises a pressure rod and a sleeve connected with the pressure rod, the sleeve is fixed on the shaft support, the measuring system comprises a pulling pressure sensor, a displacement sensor and a torque sensor, the pulling pressure sensor is connected with the loading screw rod, and the lifting system comprises a turbine speed reducer, a simulation pipe column assembly system, a loading system, a measuring system, The turbine speed reducer is located the test stand lower extreme, the fixed pulley is located the test stand upper end, the one end of steel cable is fixed the upper end of test bench, the steel cable passes the fixed pulley is connected to on the turbine speed reducer, the other end of steel cable is fixed on the test bench, hoisting system is used for adjusting the test bench is in installation inclination on the test stand.
Optionally, the test stand is L type support just the test stand includes horizontal stand and vertical support that mutually perpendicular is fixed, the horizontal stand with all be provided with 7 groups of jacks of mutually supporting on the vertical support, the test bench adopts the bolt to fix on the test stand, the mesa intermediate position of test bench is provided with the constant head tank that is used for realizing pit shaft support axial fixity.
Optionally, the simulation wellbore is fixed to the wellbore support, the sensor support is configured to fix the displacement sensors to ensure vertical orthogonality between each pair of the displacement sensors, and the simulation drill string is fixed to a transmission shaft of the servo motor by using a drill chuck, so as to achieve synchronous rotation between the simulation drill string and the transmission shaft of the servo motor.
Optionally, the lower end of the simulation drill string is of a hemispherical structure for simulating a drill bit, the lower end of the simulation drill string is inserted into the sleeve, the inner diameter of the sleeve is the same as the inner diameter of the simulation wellbore, and the sleeve is fixed on the wellbore support to ensure that the lower end of the simulation drill string is concentric with the simulation wellbore.
Optionally, the pressure lever is of a flat end and a large end structure, the large end of the pressure lever is of a cylindrical structure, the small end face of the pressure lever is of an inner hemisphere shape, the pressure lever is in spherical contact with the lower end of the simulation drill string, the simulation drill string is a stainless steel solid cylinder with the length of 2.5m, the outer diameter of the simulation drill string comprises two specifications of 3mm and 4mm, the inner diameter of the simulation shaft comprises two specifications of 6mm and 8mm, and the outer diameter of the simulation shaft is 12mm or 14mm respectively.
Optionally, the measurement system further includes a controller electrically connected to the displacement sensor, an interface unit electrically connected to the controller, and a PC terminal electrically connected to the interface unit, wherein the tensile stress sensor is mounted on an end surface of the loading screw and is in contact with a large head surface of the compression bar, and the tensile stress sensor is configured to measure a bit pressure borne by the simulation drill string; the displacement sensor is a laser displacement sensor, the displacement sensor is fixed on the sensor support, the displacement sensor is used for measuring the transverse displacement of the simulation drill string, and the torque sensor is used for measuring the torque generated when the simulation drill string rotates in the shaft.
In another aspect, an embodiment of the present invention further provides a testing method for simulating a motion state of a bottom hole assembly, where the testing method employs the above testing apparatus for simulating a motion state of a bottom hole assembly, where the testing method includes:
determining the materials and the geometric dimensions of a drill string to be simulated and a simulated well bore;
penetrating the determined simulation drill string into the simulation shaft, fixing the simulation shaft on a shaft support by adopting screw fixation, fixing the upper end of the simulation drill string on a drill clamp of a servo motor transmission shaft, penetrating the lower end of the simulation drill string into a sleeve of a simulation shaft bottom, fixing the sleeve of the simulation shaft bottom on the shaft support, and then inserting a pressure lever into the sleeve;
determining the position of a drill column to be measured, mounting a displacement sensor on a sensor support, mounting the sensor support at the position to be measured of a shaft support, and then mounting a tensile stress sensor and correcting the tensile stress sensor;
lifting the test bed to a required inclination angle through a lifting system, and fixing the test bed on a test frame;
the bit pressure required by the simulated drill string is adjusted through the loading screw rod, and bit pressure data are displayed on the tensile stress sensor in real time;
starting a driving system, and controlling a servo motor through a control cabinet so as to apply the required drilling speed to the simulated drill string;
collecting test data and observing test phenomena, and if the simulation drill column and the simulation shaft are plastically deformed or damaged, replacing the simulation drill column and the simulation shaft in time;
according to the test requirements, replacing simulation drill columns or simulation mineshafts with different specifications, adaptively changing test conditions, repeating signed test steps until the whole simulation is completed, and finishing the test device after the test is complete.
The invention has the following beneficial effects:
the testing device for simulating the motion state of the bottom hole assembly, provided by the embodiment of the invention, is provided with the simulated drill strings and the simulated mineshafts with different specifications and sizes and different materials, can realize real measurement of the motion state of the bottom hole assembly under a test condition by replacing the simulated drill strings and the simulated mineshafts, can adjust the inclination angle of the test bed on the test frame by matching with a lifting system, researches the motion states of the simulated drill strings with different sizes and different materials, which are constrained in the simulated mineshafts, under the conditions of different rotating speeds, different drilling pressures and different well inclination angles, so as to analyze the motion rules of the drill strings under different conditions, and provides a theoretical basis for controlling the motion state of the drill strings on site.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a testing apparatus for simulating a motion state of a bottom hole assembly according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a testing apparatus for simulating a motion state of a bottom hole assembly according to an embodiment of the present invention;
FIG. 3 is a schematic front view of a wellbore support according to an embodiment of the present invention;
FIG. 4 is a schematic top view of a wellbore support according to an embodiment of the present invention;
FIG. 5 is a schematic front view of a sensor holder according to an embodiment of the present invention;
FIG. 6 is a schematic side view of a sensor holder according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a servo motor according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a simulated bottomhole configuration according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A test apparatus and a test method for simulating a motion state of a bottom hole assembly according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 8.
Referring to fig. 1 and 2, a testing apparatus for simulating a motion state of a bottom hole assembly according to an embodiment of the present invention includes a fixing system, a driving system, a simulation string assembly system, a loading system, a measuring system, and a lifting system, where the fixing system includes a test stand 1, a test bed 2, a wellbore support 3, and a sensor support 4, the driving system includes a servo motor 5 and a control cabinet 6, the simulation string assembly system includes a simulation drill string 7 and a simulation wellbore 8, the simulation drill string 7 is installed inside the simulation wellbore 8, the loading system includes a simulation bottom hole 9 and a loading screw 10, the simulation bottom hole 9 includes a pressing rod 21 and a sleeve 20 connected to the pressing rod 21, the sleeve 20 is fixed to the wellbore support 3, the measuring system includes a tension and pressure sensor 11, a displacement sensor 12, and a torque sensor 13, the tension and pressure sensor 11 is connected to the loading screw 10, the lifting system comprises a turbine speed reducer 14, a fixed pulley 15 and a steel cable 16, wherein the turbine speed reducer 14 is located at the lower end of the test frame 1, the fixed pulley 15 is located at the upper end of the test frame 1, one end of the steel cable 16 is fixed at the upper end of the test frame 2, the steel cable 16 penetrates through the fixed pulley 15 and is connected to the turbine speed reducer 14, the other end of the steel cable 16 is fixed on the test frame 2, and the lifting system is used for adjusting the installation inclination angle of the test frame 2 on the test frame 1.
Specifically, refer to fig. 1 and 2 and show, fixing system is by test stand 1, test bench 2, pit shaft support 3 and sensor support 4 constitute, test stand 1 is L shaped steel system support, test stand 1 includes fixed horizontal stand of mutually perpendicular and vertical support, all be provided with 7 groups of jacks of mutually supporting on horizontal stand and the vertical support, test bench 2 adopts the bolt to fix on test stand 1, the mesa intermediate position of test bench 2 is provided with the constant head tank that is used for realizing 3 axial fixings of pit shaft support.
Furthermore, the length of a horizontal support and the length of a vertical support of the test rack 1 are both 3.3m, the test rack 1 is supported by 4 channel steels, the test rack 1 is a support frame and is used for supporting the test bed 2 and is also a sliding track of the test bed 2, the inclination angle of the test bed 2 can be changed by adjusting the spatial position of the test bed 2 in the test rack 1, so that the change of the inclination angle is simulated, 7 groups of jacks are reserved on the horizontal support and the vertical support of the test rack 1 and are respectively used for realizing simulation experiments with the inclination angles of 0 degree, 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees and 90 degrees, jacks are also reserved at the upper end and the lower end of the test rack 2, and the test rack 2 can be fixed on the test rack 1 by inserting the jacks into the plugs; referring to fig. 2, the length of the test bed 2 is 3m, the test bed 2 is formed in one step by high-precision milling, a positioning groove is milled in the middle of the table top of the test bed 2 in a high-precision milling mode, the precision is +/-0.1 mm, the positioning groove is used for fixing the transverse position of the shaft support 3, the axial position of the shaft support 3 is fixed by a positioning key, and 4 pairs of rollers are installed on the lower table top so as to adjust the installation position of the test bed 2 on the test frame 1.
Referring to fig. 3, the shaft support 3 is used for fixing the simulated shaft 8, and the installation holes of the shaft supports 3 can be uniformly processed through positioning grooves and positioning keys, so that the axial positioning, the transverse positioning and the longitudinal positioning of the simulated shaft 8 can be ensured, the shaft support 3 is a two-branch structure, the base width is 12mm, the two branches are 1mm wide, 10mm intervals are reserved in the middle of the two branches for placing the sensor supports 4, the two branches respectively support one end of two sections of the simulated shaft 8, and the two sections of the simulated shaft 8 can be ensured to be straight and concentric; referring to fig. 4, the width of the sensor support 4 is 8mm, the sensor support 4 is used for fixing the displacement sensors 12, baffles on each surface of the sensor support 4 are integrally formed by linear cutting, so that each pair of displacement sensors are perpendicular to each other, and the sensor support 4 is mounted on the shaft support 3 through bolts.
Specifically, referring to fig. 1, 3, 4, 5 and 6, the simulated wellbore 8 is fixed on the wellbore support 3, the sensor support 4 is used for fixing the displacement sensors to ensure vertical orthogonality between each pair of displacement sensors 12, and the simulated drill string 7 is fixed with the transmission shaft of the servo motor 5 by using a drill chuck to realize synchronous rotation between the simulated drill string 7 and the transmission shaft of the servo motor 5.
Referring to fig. 1, 3, 4 and 8, the lower end of the simulation drill string 7 is of a hemispherical structure for the simulation drill bit, the lower end of the simulation drill string 7 is inserted into a sleeve 20 and the inner diameter of the sleeve 20 is the same as that of the simulation wellbore 8, and the sleeve 20 is fixed on the wellbore support 3 to ensure that the lower end of the simulation drill string 7 is concentric with the simulation wellbore 8. The depression bar 21 is big or small head structure of butt end, and the major part of depression bar 21 is cylinder structure and the minor end terminal surface of depression bar 21 is interior hemisphere, is the sphere contact between depression bar 21 and the 7 lower extremes of simulation drilling string, and simulation drilling string 7 is the stainless steel solid cylinder that length is 2.5m, and the external diameter of simulation drilling string 7 includes two kinds of specifications of 3mm and 4mm, and the internal diameter of simulation pit shaft 8 includes two kinds of specifications of 6mm and 8mm and the external diameter of simulation pit shaft 8 is 12mm or 14mm respectively.
Referring to fig. 1 and 7, the driving system is composed of a servo motor 5 and a control cabinet 6, the servo motor 5 is an alternating current servo motor for a numerical control machine, referring to fig. 7, the servo motor 5 can perform stepless speed change, the rotating speed range is 0-5000r/min, the rotating speed of the servo motor 5 is controlled through the control cabinet 6, the control cabinet 6 is provided with a rotating speed feedback system, the rotating speed precision can be controlled within 1r/min, accurate rotating speed can be provided for the simulation drill string 7, the simulation drill string 7 is fixed through a drill chuck on a motor transmission shaft, the simulation drill string 7 can be driven to synchronously rotate along with the transmission shaft, and the motor transmission shaft and the simulation shaft 8 are concentrically installed, so that the upper end of the simulation drill string 7 is fixed on a center line of the simulation shaft 8.
Specifically, referring to fig. 1 and 8, the simulation string assembly system comprises a simulation string 7 and a simulation wellbore 8, the simulation string 7 is a solid round bar made of 304 stainless steel and having a length of 2.5m, a plurality of strings are not required to be connected, the outer diameter is 3mm and 4mm, the simulation string 7 can eliminate the influence of the non-straightness of the simulation string 7 due to threaded connection in the conventional BHA dynamics test device, the upper end of the simulation string 7 is inserted into a drill clip of a servo motor 5 by 5cm, the lower end of the simulation string 7 is ground into a hemisphere shape to simulate a drill bit, and the simulation string 7 is inserted into a sleeve 20 of a simulation well bottom 9 by 5cm, so that the effective length of the simulation string 7 is 2.; the simulated shaft 8 is made of two materials, namely a 304 stainless steel pipe and an organic glass pipe, the inner diameter is divided into two specifications of 6mm and 8mm, the outer diameter is respectively divided into two specifications of 12mm and 14mm, the measuring positions are selected to be at four measuring positions which are 0.2m, 0.7m, 1.2m and 1.7m away from the simulated shaft bottom, the simulated shaft is divided into 5 sections, the lengths of the simulated shaft are respectively 0.5m, 0.4m and 0.1m, the middle interval of each section of the simulated shaft 8 is 0.1m, the simulated shaft is used for installing the displacement sensor 12, and the upper end and the lower end of the simulated shaft 8 are respectively spaced 0.1m away from the shaft top and the shaft bottom, so.
Specifically, referring to fig. 1 and 8, the loading system is composed of a simulated shaft bottom 9 and a loading screw 10, referring to fig. 8, the simulated shaft bottom 9 is composed of a sleeve 20 and a pressure rod 21, the inner diameter of the sleeve 20 is the same as that of the simulated drill string 7, a simulated drill bit at the lower end of the simulated drill string is inserted into the sleeve 20, the outer diameter of the sleeve 20 is the same as that of the simulated wellbore 8, and the sleeve 20 is also fixed on the wellbore support 3 to ensure that the lower end of the simulated drill string is concentric with the simulated wellbore 8, so that the sleeve 20 can restrict the radial displacement of the lower end of the simulated drill string 7, but allow axial movement; the pressure lever 21 is of a flat end big-small head structure, the big end is of a cylindrical structure, the end face of the small head is of an inner hemisphere shape and can be combined with the simulation drill bit to form a spherical surface for contact, the outer diameter of the small head of the pressure lever 21 is the same as that of the simulation drill string 7 and is inserted into the sleeve 20, so that the pressure lever 21 and the simulation drill string 7 are on the same axis, and the big end of the pressure lever 21 is pushed by the loading screw rod 10 to enable the small head to extrude the simulation drill bit, so that drill pressure is.
Referring to fig. 1, the measurement system of the embodiment of the present invention further includes a controller 17 electrically connected to the displacement sensor 12, an interface unit 18 electrically connected to the controller 17, and a PC terminal 19 electrically connected to the interface unit 18, wherein the tensile stress sensor 11 is mounted on an end surface of the loading screw 10, the tensile stress sensor 11 is in contact with a large head surface of the compression rod 21, and the tensile stress sensor 11 is used for measuring the bit pressure borne by the simulated drill string; the displacement sensor 12 is a laser displacement sensor, the displacement sensor 12 is used for measuring the transverse displacement of the simulation drill string 7, and the torque sensor 13 is used for measuring the torque generated when the simulation drill string 7 rotates in the well bore.
Specifically, the displacement sensor 12 is a laser displacement sensor and is connected to a PC terminal 19 through a matched controller 17 and an interface unit 18, the PC terminal 19 can directly store displacement data and display a time-dependent change image of displacement, the laser displacement sensor is composed of a laser emitter and a laser receiver, laser needs to directly irradiate on a simulation drill string and cannot be shielded by other objects, so that the simulation drill shaft 8 needs to be disconnected at a measurement position, a gap is reserved in the middle for placing the displacement sensor 12, two pairs of displacement sensors are vertically placed to measure transverse displacement at the position of one drill string, and therefore four sensor probes are vertically installed in four directions, namely up, down, left and right, of one sensor support 4; the torque sensor 13 is located inside the system of the upper end servo motor 5 and does not need to be specially installed for measuring the torque generated when the simulated drill string 7 rotates in the simulated wellbore.
The testing device for simulating the motion state of the bottom hole assembly, provided by the embodiment of the invention, is provided with the simulated drill strings and the simulated mineshafts with different specifications and sizes and different materials, can realize real measurement of the motion state of the bottom hole assembly under a test condition by replacing the simulated drill strings and the simulated mineshafts, can adjust the inclination angle of the test bed on the test frame by matching with a lifting system, researches the motion states of the simulated drill strings with different sizes and different materials, which are constrained in the simulated mineshafts, under the conditions of different rotating speeds, different drilling pressures and different well inclination angles, so as to analyze the motion rules of the drill strings under different conditions, and provides a theoretical basis for controlling the motion state of the drill strings on site.
On the other hand, based on the same inventive concept, the embodiment of the present invention further provides a testing method for simulating the motion state of the bottom hole assembly, and the testing method is applied to the testing apparatus for simulating the motion state of the bottom hole assembly, wherein the testing method comprises the following steps:
the method comprises the following steps: determining the materials and the geometric dimensions of a drill string 7 to be simulated and a simulated well bore 8;
step two: penetrating the determined simulated drill string 7 into the simulated shaft 8, fixing the simulated shaft 8 on the shaft support 3 by adopting screw fixation, fixing the upper end of the simulated drill string 7 on a drill clip of a transmission shaft of a servo motor, penetrating the lower end of the simulated drill string 7 into a sleeve of a simulated shaft bottom 9, fixing the sleeve 20 of the simulated shaft bottom 9 on the shaft support 3, and then inserting a pressure rod 21 into the sleeve 20;
step three: determining the position of a drill string to be measured, installing a displacement sensor 12 on a sensor support 4, installing the sensor support 4 at the position to be measured on a shaft support 3, and then installing a tensile stress sensor 11 and correcting the tensile stress sensor 11;
step four: lifting the test bed 2 to a required inclination angle through a lifting system, and fixing the test bed 2 on the test frame 1;
step five: the bit pressure required by the simulated drill string 7 is adjusted through the loading screw rod 10, and bit pressure data are displayed on the tensile stress sensor 11 in real time;
step six: starting a driving system, and controlling a servo motor 5 through a control cabinet so as to apply the required drilling speed to the simulation drill string 7;
step seven: collecting test data and observing test phenomena, and if the simulation drill column 7 and the simulation shaft 8 are plastically deformed or damaged, replacing the simulation drill column 7 and the simulation shaft 8 in time;
step eight: according to the test requirement, the simulation drill column 7 or the simulation shaft 8 with different specifications is replaced, the test condition is adaptively changed, the signed test steps are repeated until the whole simulation is completed, and the test device is arranged after the test is complete.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (7)
1. A test device for simulating the motion state of a bottom hole assembly is characterized by comprising a fixing system, a driving system, a simulation pipe column assembly system, a loading system, a measuring system and a lifting system, wherein the fixing system comprises a test stand, a test bed, a shaft support and a sensor support, the driving system comprises a servo motor and a control cabinet, the simulation pipe column assembly system comprises a simulation drill string and a simulation shaft, the simulation drill string is installed in the simulation shaft, the loading system comprises a simulation well bottom and a loading screw rod, the simulation well bottom comprises a pressure rod and a sleeve connected with the pressure rod, the sleeve is fixed on the shaft support, the measuring system comprises a tension pressure sensor, a displacement sensor and a torque sensor, and the tension pressure sensor is connected with the loading screw rod, the lifting system comprises a turbine speed reducer, a fixed pulley and a steel cable, the turbine speed reducer is located at the lower end of the test frame, the fixed pulley is located at the upper end of the test frame, one end of the steel cable is fixed at the upper end of the test bed, the steel cable penetrates through the fixed pulley to be connected to the turbine speed reducer, the other end of the steel cable is fixed on the test bed, and the lifting system is used for adjusting the installation inclination angle of the test bed on the test frame.
2. The testing device according to claim 1, wherein the testing stand is an L-shaped support and comprises a horizontal support and a vertical support which are vertically fixed to each other, the horizontal support and the vertical support are provided with 7 groups of jacks which are matched with each other, the testing stand is fixed on the testing stand by using a bolt, and a positioning groove for axially fixing the shaft support is arranged in the middle of the table top of the testing stand.
3. The testing apparatus of claim 1, wherein the simulated wellbore is fixed to the wellbore support, the sensor support is configured to fix the displacement sensors to ensure vertical orthogonality between each pair of the displacement sensors, and the simulated drill string is fixed to the drive shaft of the servo motor using a drill chuck to achieve synchronous rotation between the simulated drill string and the drive shaft of the servo motor.
4. The test rig according to claim 3, wherein the lower end of the simulation drill string is of a hemispherical configuration for simulating a drill bit, the lower end of the simulation drill string being inserted into the sleeve and the sleeve having the same inner diameter as the simulated wellbore, the sleeve being secured to the wellbore support to ensure that the lower end of the simulation drill string is concentric with the simulated wellbore.
5. The testing device as claimed in claim 4, wherein the pressure rod is of a flat-end large-small-head structure, the large end of the pressure rod is of a cylindrical structure and the small end face of the pressure rod is of an inner hemisphere shape, the pressure rod is in spherical contact with the lower end of the simulation drill string, the simulation drill string is a stainless steel solid cylinder with a length of 2.5m, the outer diameter of the simulation drill string comprises two specifications of 3mm and 4mm, the inner diameter of the simulation wellbore comprises two specifications of 6mm and 8mm, and the outer diameter of the simulation wellbore is 12mm or 14mm respectively.
6. The testing apparatus of claim 5, wherein the measuring system further comprises a controller electrically connected to the displacement sensor, an interface unit electrically connected to the controller, and a PC terminal electrically connected to the interface unit, wherein the tensile stress sensor is mounted on an end surface of the loading screw and in contact with a large head surface of the compression rod, and is used for measuring the weight on bit to which the simulation drill string is subjected; the displacement sensor is a laser displacement sensor, the displacement sensor is fixed on the sensor support, the displacement sensor is used for measuring the transverse displacement of the simulation drill string, and the torque sensor is used for measuring the torque generated when the simulation drill string rotates in the shaft.
7. A test method for simulating the motion state of a bottom hole assembly, which is characterized by adopting the test device for simulating the motion state of the bottom hole assembly according to any one of claims 1 to 6, wherein the test method comprises the following steps:
determining the materials and the geometric dimensions of a drill string to be simulated and a simulated well bore;
penetrating the determined simulation drill string into the simulation shaft, fixing the simulation shaft on a shaft support by adopting screw fixation, fixing the upper end of the simulation drill string on a drill clamp of a servo motor transmission shaft, penetrating the lower end of the simulation drill string into a sleeve of a simulation shaft bottom, fixing the sleeve of the simulation shaft bottom on the shaft support, and then inserting a pressure lever into the sleeve;
determining the position of a drill column to be measured, mounting a displacement sensor on a sensor support, mounting the sensor support at the position to be measured of a shaft support, and then mounting a tensile stress sensor and correcting the tensile stress sensor;
lifting the test bed to a required inclination angle through a lifting system, and fixing the test bed on a test frame;
the bit pressure required by the simulated drill string is adjusted through the loading screw rod, and bit pressure data are displayed on the tensile stress sensor in real time;
starting a driving system, and controlling a servo motor through a control cabinet so as to apply the required drilling speed to the simulated drill string;
collecting test data and observing test phenomena, and if the simulation drill column and the simulation shaft are plastically deformed or damaged, replacing the simulation drill column and the simulation shaft in time;
according to the test requirements, replacing simulation drill columns or simulation mineshafts with different specifications, adaptively changing test conditions, repeating signed test steps until the whole simulation is completed, and finishing the test device after the test is complete.
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| CN113008534A (en) * | 2021-01-29 | 2021-06-22 | 王为 | Simulation experiment device for friction resistance of large-inclination drilling |
| CN113945683A (en) * | 2021-10-13 | 2022-01-18 | 中海石油(中国)有限公司湛江分公司 | Slope well construction experimental device and experimental method |
| CN114199605A (en) * | 2022-02-18 | 2022-03-18 | 西南石油大学 | Horizontal drill string system dynamics simulation test bed and test method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061745A (en) * | 2012-12-18 | 2013-04-24 | 中国石油大学(北京) | Test device and method for mechanical characteristics of simulation bottom hole assembly |
| CN203729975U (en) * | 2014-01-03 | 2014-07-23 | 中国石油大学(北京) | Device for measuring lateral force and axial force of drill bit in simulation drilling |
| CN109339766A (en) * | 2018-12-12 | 2019-02-15 | 重庆科技学院 | Air-filling well-drilling dynamic circulation analog synthesis experimental system |
| CN109490100A (en) * | 2018-12-11 | 2019-03-19 | 西安石油大学 | A kind of drill string drag and torque test and experiment device |
| CN109630045A (en) * | 2018-12-12 | 2019-04-16 | 重庆科技学院 | The multi-functional full well section dynamic circulation experimental system for simulating of drilling well |
-
2019
- 2019-06-24 CN CN201910547699.6A patent/CN111964880A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061745A (en) * | 2012-12-18 | 2013-04-24 | 中国石油大学(北京) | Test device and method for mechanical characteristics of simulation bottom hole assembly |
| CN203729975U (en) * | 2014-01-03 | 2014-07-23 | 中国石油大学(北京) | Device for measuring lateral force and axial force of drill bit in simulation drilling |
| CN109490100A (en) * | 2018-12-11 | 2019-03-19 | 西安石油大学 | A kind of drill string drag and torque test and experiment device |
| CN109339766A (en) * | 2018-12-12 | 2019-02-15 | 重庆科技学院 | Air-filling well-drilling dynamic circulation analog synthesis experimental system |
| CN109630045A (en) * | 2018-12-12 | 2019-04-16 | 重庆科技学院 | The multi-functional full well section dynamic circulation experimental system for simulating of drilling well |
Non-Patent Citations (2)
| Title |
|---|
| 范永涛 等: ""底部钻具组合动力学特性模拟实验方法研究"", 《石油机械》 * |
| 谢强: ""模拟底部钻具组合不同运动状态的特征研究"", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008534A (en) * | 2021-01-29 | 2021-06-22 | 王为 | Simulation experiment device for friction resistance of large-inclination drilling |
| CN113945683A (en) * | 2021-10-13 | 2022-01-18 | 中海石油(中国)有限公司湛江分公司 | Slope well construction experimental device and experimental method |
| CN113945683B (en) * | 2021-10-13 | 2024-07-16 | 中海石油(中国)有限公司湛江分公司 | Slope well construction experimental device and experimental method |
| CN114199605A (en) * | 2022-02-18 | 2022-03-18 | 西南石油大学 | Horizontal drill string system dynamics simulation test bed and test method |
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