A high temperature environment simulation device for screw drilling tools

Abstract

The present application provides a high-temperature environment simulation device for screw drills, including a high-temperature simulation device; the high-temperature simulation device includes a high-temperature environment box; a corresponding channel is provided on the high-temperature environment box corresponding to the screw drill; a heating device is provided at one end of the channel; the heating device blows hot air into the high-temperature environment box through a blower; and the high-temperature environment box is also provided with corresponding sand injection holes, sand discharge holes and pressure control valves. According to the technical solution provided in the embodiment of the present application, hot air can be introduced into and out of the high-temperature environment box through the blower, so that the screw drill is in a high-temperature environment, and the pressure control valve can ensure that the high-temperature environment box is in a constant pressure state to prevent the blower from being unable to supply air normally due to excessive air pressure, and sand can be injected into the high-temperature environment box through the sand injection hole to heat the screw drill evenly, ensuring that the test data is more accurate.

Description

Technical Field

[0001] The present application relates to the field of oil and gas drilling engineering and trenchless scientific drilling technology, and specifically to a high temperature environment simulation device for screw drilling tools. Background Art

[0002] Power drilling tools have become the most widely used downhole tools in special oil and gas drilling, trenchless rock crushing and scientific drilling. As modern oil and gas resource development moves towards deep formations, the problem of thermal oxidation aging of power drilling tool stator rubber caused by well temperature has become increasingly prominent. The main reason is that the motor operates for a long time in a high temperature environment, and the drilling fluid cannot discharge the heat in time. The retained heat causes the physical and chemical properties of the rubber to change, resulting in "heartburn" phenomenon, causing the rubber to fall off and fall off, blocking the drill bit water hole and causing the motor to lose power. At the same time, the size of the interference fit value of the stator and rotor and the internal structure of the adhesive will also change with the increase in temperature, seriously affecting the mechanical efficiency of downhole drilling tools. Therefore, it is urgent to analyze the impact of well temperature on the performance of power drilling tools.

[0003] A high-temperature screw drill test bench with application publication number CN 105910810 A includes a load system, a water circulation system, a fixed installation system, a central control system and a drill heating system. The load system includes a brake, a reduction box and a torque sensor. The water circulation system includes a water distribution transmission assembly, a mud pump and a circulating water pipeline. The fixed installation system includes a base, a drill lifting mechanism and a tail end clamping mechanism. The drill heating system consists of a plurality of medium heating boxes. The brake, the reduction box, the torque sensor, the water distribution transmission assembly, a plurality of medium heating boxes, the drill lifting mechanism and the tail end clamping mechanism are fixedly connected to the base in sequence. The screw drill to be tested passes through the medium heating box. The beneficial effect of the present invention is that it has a drill heating system, which can truly simulate the actual working conditions of the drill in the well, so as to more realistically measure the performance of the drill at high temperature.

[0004] In the above-mentioned high-temperature screw drill test bench, the heating principle of the high-temperature temperature field simulation system is resistance heating, which has a long heating time, high power consumption, and large test data errors; at the same time, the temperature environment box of the high-temperature test bench only heats the lower part, resulting in uneven heating of the screw drill and inaccurate test data. Summary of the invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a high temperature environment simulation device for a screw drill.

[0006] The present application provides a high-temperature environment simulation device for a screw drill, comprising a high-temperature simulation device; the high-temperature simulation device comprises a high-temperature environment box; a corresponding channel is arranged on the high-temperature environment box corresponding to the screw drill; a heating device is arranged at one end of the channel; the heating device blows hot air into the high-temperature environment box through a blower; and corresponding sand injection holes, sand discharge holes and a pressure control valve are also arranged on the high-temperature environment box.

[0007] Furthermore, the high temperature environment box includes an upper box body and a lower box body; the upper box body is connected to an extrusion hydraulic cylinder and can move in a direction perpendicular to the lower box body; the extrusion hydraulic cylinder is located on a side of the upper box body away from the lower box body.

[0008] Furthermore, the channel is located at the joint of the upper box body and the lower box body; and the upper box body and the lower box body are respectively provided with corresponding semicircular holes corresponding to the channel.

[0009] Furthermore, it also includes a base; the high temperature simulation device can be slidably installed on the base, and the sliding direction is the same as the direction of the channel; a clamping device is provided at one end of the channel; the clamping device is fixedly installed on the base; and a positioning hydraulic cylinder is connected between the high temperature simulation device and the clamping device.

[0010] Furthermore, a clamping device is provided on the base; the clamping device can be slidably installed on the base, and the sliding direction is the same as that of the high temperature simulation device; the clamping device is located at one end of the high temperature simulation device away from the clamping device.

[0011] Furthermore, it also includes a mud device; the mud device is connected to the screw drill and is used to provide power for the screw drill; and a load device is also provided at one end of the screw drill away from the mud device.

[0012] Furthermore, the load device is an axial drilling pressure simulation device; the axial drilling pressure simulation device includes a mounting seat; a sliding bracket is slidably mounted on the mounting seat; a casting box and a fixing mechanism for clamping the casting box are provided on the sliding bracket; a corresponding propulsion mechanism is also provided on the mounting seat along the movement direction of the sliding bracket; the propulsion mechanism is fixedly mounted on the mounting seat; and both the fixing mechanism and the propulsion mechanism are provided with sensors for detecting pressure.

[0013] Furthermore, the fixing mechanism includes a door-shaped fixing frame; the casting box is located inside the fixing frame; a clamping hydraulic cylinder is provided on the top and both sides of the fixing frame; the clamping hydraulic cylinder is perpendicular to the corresponding end face of the casting box; the propulsion mechanism includes a support plate perpendicular to the movement direction of the sliding bracket; a corresponding propulsion hydraulic cylinder is provided on the support plate corresponding to the casting box; and a corresponding push-pull hydraulic cylinder is also connected between the propulsion mechanism and the sliding bracket.

[0014] Furthermore, the load device is a load simulation transmission box; the load simulation transmission box includes a planetary gear mechanism and a braking mechanism; the planetary gear mechanism includes an input shaft connected to the planetary bracket and a sun shaft connected to the sun gear; the braking mechanism includes a main gear connected to the sun shaft and a plurality of sub-gears meshing with the main gear; the sub-gears are connected to a hydraulic motor for braking through a rotating shaft; and a sensor for detecting torque is provided on the hydraulic motor.

[0015] Furthermore, the planetary gear mechanism also includes a large ring gear; corresponding housings are provided on both sides of the large ring gear corresponding to the planetary gear mechanisms; the housing and the large ring gear are fixedly connected, and corresponding through holes are provided at the input shaft and the sun shaft; a corresponding mounting sleeve is provided at one end of the housing away from the input shaft corresponding to the braking mechanism; a corresponding end cover is provided at one end of the mounting sleeve away from the housing; and a corresponding outlet is provided on the end cover corresponding to the sun shaft.

[0016] The advantages and positive effects of the present application are as follows: hot air can be introduced into and out of the high-temperature environment box through the blower, so that the screw drill is in a high-temperature environment; the pressure control valve can ensure that the high-temperature environment box is in a constant pressure state to prevent the blower from being unable to supply air normally due to excessive air pressure; sand can be injected into the high-temperature environment box through the sand injection hole to heat the screw drill evenly, thereby ensuring that the test data is more accurate.

[0017] According to the technical solution provided in certain embodiments of the present application, the maximum axial pressure, torque and other performance parameters of the screw drill bit failure in rock breaking can be detected through an axial drilling pressure simulation device; the fixing mechanism fixes the cast cement block to ensure that the screw drill bit does not shake during the drilling process, and the propulsion mechanism applies pressure to the cement block along the drilling direction to detect the maximum axial pressure, torque and other performance parameters of the screw drill bit failure in rock breaking through the sensor.

[0018] The output torque and output speed of the screw motor can be measured through the load simulation transmission box; by connecting the input shaft with the output end of the screw motor, increasing the speed and reducing the torque through the planetary gear mechanism, and then outputting it to the main gear through the sun shaft, the main gear transmits the torque to the hydraulic motor through multiple sub-gears, and the hydraulic motor realizes braking, the output torque and output speed of the screw motor can be measured by the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a high temperature environment simulation device for a screw drill provided in an embodiment of the present application;

[0020] Figure 2 A schematic structural diagram of a high temperature simulation device for a high temperature environment simulation device for a screw drill provided in an embodiment of the present application;

[0021] Figure 3 A structural schematic diagram of a drilling pressure simulation device of a high temperature environment simulation device for a screw drill provided in an embodiment of the present application;

[0022] Figure 4 This is a schematic structural diagram of a load simulation transmission box of a high temperature environment simulation device for a screw drill provided in an embodiment of the present application.

[0023] The text labels in the figure are as follows: 100-high temperature simulation device; 110-high temperature environment box; 111-sand injection hole; 112-sand discharge hole; 113-upper box; 114-lower box; 115-pressure control valve; 120-heating device; 130-blower; 140-extrusion hydraulic cylinder; 200-base; 300-clamping device; 310-positioning hydraulic cylinder; 400-clamping device; 500-mud device; 600-drilling pressure simulation device; 610-mounting seat ;620-sliding bracket;630-casting box;640-fixed bracket;641-clamping hydraulic cylinder;650-support plate;651-advancing hydraulic cylinder;660-push-pull hydraulic cylinder;700-load simulation transmission box;710-planetary bracket;711-input shaft;720-sun gear;721-sun shaft;730-main gear;740-sub gear;741-rotating shaft;750-hydraulic motor;760-housing;770-end cover;780-large gear ring. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is described in detail below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present application.

[0025] Please refer to Figure 1 and Figure 2The present embodiment provides a high temperature environment simulation device for a screw drill, including a high temperature simulation device 100, the high temperature simulation device 100 includes a high temperature environment box 110, a corresponding channel is provided on the high temperature environment box 110 corresponding to the screw drill, the screw drill passes through the high temperature environment box 110 to heat a designated position; a heating device 120 is provided at one end of the channel; the heating device 120 adopts high frequency electromagnetic heating technology, and a corresponding channel is also provided for the screw drill; a blower 130 is provided at one end of the heating device 120 away from the high temperature environment box 110, and the blower 130 can blow the air heated by the high frequency electromagnetic heating device into the high temperature environment box 110. The high temperature environment box 110 is provided with a pressure control valve 115, and the blower 130 continuously injects hot air into the high temperature environment box 110, causing the air pressure in the high temperature environment box 110 to increase. The pressure control valve 115 can ensure that the air pressure inside the high temperature environment box 110 remains stable; a sand injection hole 111 is provided at the top of the high temperature environment box 110, and a sand discharge hole 112 is provided near the bottom; due to the presence of fine sand, the hot air can be evenly distributed inside the high temperature environment box 110 until it is heated to the set temperature. The high temperature environment box 110 is temperature-controlled by the controller, and a high temperature simulation test is performed on the screw drill.

[0026] In a preferred embodiment, the high temperature environment box 110 includes an upper box body 113 and a lower box body 114; the upper box body 113 is connected to the extrusion hydraulic cylinder 140 and can move in a direction perpendicular to the lower box body 114; a parallel mounting plate is provided at one end of the upper box body 113 away from the lower box body 114, and the extrusion hydraulic cylinder 140 is vertically mounted on the mounting plate.

[0027] In a preferred embodiment, the channel is located at the joint of the upper box body 113 and the lower box body 114, and the upper box body 113 and the lower box body 114 are respectively provided with corresponding semicircular holes corresponding to the channels; after the upper box body 113 and the lower box body 114 are connected, the two semicircular holes are connected to form a circular hole.

[0028] In a preferred embodiment, it also includes a base 200, and the high temperature simulation device 100 can be slidably installed on the base 200, and the sliding direction is the same as the direction of the channel. A clamping device 300 is provided at one end of the channel, and the clamping device 300 is fixedly installed on the base 200. The clamping device 300 includes a clamping sleeve, which is concentrically arranged with the channel. The clamping sleeve is composed of two semicircular sleeves, and the two semicircular sleeves are respectively connected to corresponding hydraulic cylinders. The screw drill is clamped or loosened by the hydraulic cylinder control; a corresponding support frame is also provided at the end of the clamping sleeve away from the high temperature simulation device 100 corresponding to the screw drill; a positioning hydraulic cylinder 310 is connected between the high temperature simulation device 100 and the clamping device 300; after the clamping device 300 clamps the screw drill, the distance between it and the high temperature simulation device 100 is adjusted by the positioning hydraulic cylinder 310, so that the designated position of the screw drill is located at the high temperature environment box 110, which can effectively improve the accuracy of the experimental data.

[0029] In a preferred embodiment, a clamping device 400 is further provided on the base 200. The clamping device 400 can be slidably installed on the base 200, and the sliding direction is the same as the sliding direction of the high temperature simulation device 100. The clamping device 400 is located at the end of the high temperature simulation device 100 away from the clamping device 300. The clamping device 400 can be slidably adjusted according to the length of the screw drill to ensure that the screw drill remains stable.

[0030] In a preferred embodiment, a power source mud device 500 is further included. The mud device 500 is connected to the screw drill and is located near one end of the clamping device 300. A load device is also provided at one end of the screw drill away from the mud device 500.

[0031] Please refer to further Figure 3 In a preferred embodiment, the load device is an axial drilling pressure simulation device 600, which includes a mounting seat 610, on which a sliding bracket 620 can be slidably mounted, and a casting box 630 and a fixing mechanism for clamping the casting box 630 are provided on the sliding bracket 620; the casting box 630 includes a frame and a baffle; the baffle is connected to the frame by bolts; cement blocks of different densities can be cast in the casting box 630 as needed, and after the casting is completed, the baffle on the corresponding side of the screw drill is removed for testing; a corresponding propulsion mechanism is also provided on the mounting seat 610 along the movement direction of the sliding bracket 620, and the propulsion mechanism is fixedly installed on the mounting seat 610, and both the fixing mechanism and the propulsion mechanism are provided with sensors for detecting pressure.

[0032] In a preferred embodiment, the fixing mechanism includes a door-shaped fixing frame 640, the casting box 630 is located inside the fixing frame 640, and a clamping hydraulic cylinder 641 is provided on the top and both sides of the fixing frame 640. The clamping hydraulic cylinder 641 is installed on the fixing frame 640, and the piston rod passes through the fixing frame 640 to clamp the casting box 630; a corresponding circular hole is provided on the fixing frame 640 corresponding to the piston rod; the clamping hydraulic cylinder 641 is perpendicular to the corresponding end face of the casting box 630; the propulsion mechanism includes a support plate 650 perpendicular to the movement direction of the sliding bracket 620, and a corresponding propulsion hydraulic cylinder 651 is provided on the support plate 650 corresponding to the casting box 630; a corresponding push-pull hydraulic cylinder 660 is also connected between the propulsion mechanism and the sliding bracket 620.

[0033] Please refer to further Figure 4In a preferred embodiment, the load device is a load simulation transmission box 700, which includes a planetary gear mechanism and a braking mechanism; the planetary gear mechanism includes a sun gear 720 and a large ring gear 780, and a plurality of corresponding planetary gears are arranged between the sun gear 720 and the large ring gear 780; the planetary gears are mounted on a planetary support 710; an input shaft 711 is also mounted on the planetary support 710; a sun shaft 721 is connected to the sun gear 720; the braking mechanism includes a main gear 730 connected to the sun shaft 721 and a plurality of sub-gears 740 meshing with the main gear 730; the sub-gears 740 are connected to a hydraulic motor 750 for braking through a rotating shaft 741, and a sensor for detecting torque is provided on the hydraulic motor 750.

[0034] In a preferred embodiment, corresponding housings 760 are provided on both sides of the large gear ring 780 corresponding to the planetary gear mechanism; the housing 760 is fixedly connected to the large gear ring 780, and corresponding through holes are provided at the corresponding input shaft 711 and the sun shaft 721, respectively; a corresponding mounting sleeve is provided at the end of the housing 760 away from the input shaft 711 corresponding to the braking mechanism; the mounting sleeve is coaxially arranged with the through hole corresponding to the sun shaft 721, and a corresponding end cover 770 is provided at the end of the mounting sleeve away from the housing 760; the rotating shaft 741 is installed between the housing 760 and the end cover 770; the main gear 730 and the sub-gear 740 are both located between the housing 760 and the end cover 770; the hydraulic motor 750 is installed on the side of the end cover 770 away from the housing 760; and a corresponding outlet is also provided on the end cover 770 corresponding to the sun shaft 721.

[0035] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A high temperature environment simulation device for screw drilling tools, characterized in that: The high temperature simulation device (100) comprises a high temperature environment box (110); the high temperature environment box (110) is provided with a corresponding channel corresponding to the screw drill; a heating device (120) is provided at one end of the channel; the heating device (120) blows hot air into the high temperature environment box (110) through a blower (130); the high temperature environment box (110) is also provided with a corresponding sand injection hole (111), a sand discharge hole (112) and a pressure control valve (115); The sand injection hole (111) is used to inject sand into the high temperature simulation device (100) so that the screw drill is evenly heated; The high temperature environment box (110) comprises an upper box body (113) and a lower box body (114); the upper box body (113) is connected to an extrusion hydraulic cylinder (140) and can move in a direction perpendicular to the lower box body (114); the extrusion hydraulic cylinder (140) is located on a side of the upper box body (113) away from the lower box body (114); It also includes a mud device (500); the mud device (500) is connected to the screw drill and is used to provide power for the screw drill; the end of the screw drill away from the mud device (500) is also provided with a load device; The load device is an axial drilling pressure simulation device (600); the axial drilling pressure simulation device (600) comprises a mounting seat (610); a sliding bracket (620) is slidably mounted on the mounting seat (610); a casting box (630) and a fixing mechanism for clamping the casting box (630) are provided on the sliding bracket (620); a corresponding propulsion mechanism is also provided on the mounting seat (610) along the movement direction of the sliding bracket (620); the propulsion mechanism is fixedly mounted on the mounting seat (610); and the fixing mechanism and the propulsion mechanism are both provided with sensors for detecting pressure; The fixing mechanism comprises a door-shaped fixing frame (640); the casting box (630) is located inside the fixing frame (640); a clamping hydraulic cylinder (641) is provided on the top and both sides of the fixing frame (640); the clamping hydraulic cylinder (641) is perpendicular to the corresponding end surface of the casting box (630); the propulsion mechanism comprises a support plate (650) perpendicular to the movement direction of the sliding bracket (620); a corresponding propulsion hydraulic cylinder (651) is provided on the support plate (650) corresponding to the casting box (630); and a corresponding push-pull hydraulic cylinder (660) is also connected between the propulsion mechanism and the sliding bracket (620).

2. The high temperature environment simulation device for screw drill according to claim 1, characterized in that: The passage is located at the joint between the upper box body (113) and the lower box body (114); the upper box body (113) and the lower box body (114) are respectively provided with corresponding semicircular holes corresponding to the passage.

3. The high temperature environment simulation device for screw drill according to claim 1, characterized in that: It also includes a base (200); the high temperature simulation device (100) can be slidably mounted on the base (200), and the sliding direction is the same as the direction of the channel; a clamping device (300) is provided at one end of the channel; the clamping device (300) is fixedly mounted on the base (200); and a positioning hydraulic cylinder (310) is connected between the high temperature simulation device (100) and the clamping device (300).

4. The high temperature environment simulation device for screw drill according to claim 3, characterized in that: The base (200) is also provided with a clamping device (400); the clamping device (400) can be slidably mounted on the base (200), and the sliding direction is the same as that of the high-temperature simulation device (100); the clamping device (400) is located at an end of the high-temperature simulation device (100) away from the clamping device (300).

5. The high temperature environment simulation device for screw drill according to claim 1, characterized in that: The load device is a load simulation transmission box (700); the load simulation transmission box (700) comprises a planetary gear mechanism and a brake mechanism; the planetary gear mechanism comprises an input shaft (711) connected to a planetary support (710) and a sun shaft (721) connected to a sun gear (720); the brake mechanism comprises a main gear (730) connected to the sun shaft (721) and a plurality of sub-gears (740) meshing with the main gear (730); the sub-gears (740) are connected to a hydraulic motor (750) for braking via a rotating shaft (741); and a sensor for detecting torque is provided on the hydraulic motor (750).

6. The high temperature environment simulation device for screw drill according to claim 5, characterized in that: The planetary gear mechanism further comprises a large gear ring (780); corresponding housings (760) are respectively provided on both sides of the large gear ring (780) corresponding to the planetary gear mechanism; the housing (760) is fixedly connected to the large gear ring (780), and corresponding through holes are provided at locations corresponding to the input shaft (711) and the sun shaft (721); a corresponding mounting sleeve is provided at one end of the housing (760) away from the input shaft (711) corresponding to the brake mechanism; a corresponding end cover (770) is provided at one end of the mounting sleeve away from the housing (760); and a corresponding outlet is provided on the end cover (770) corresponding to the sun shaft (721).

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