Full-automatic pressure testing machine for oil well cement

Abstract

The utility model discloses a full-automatic pressure testing machine for oil well cement. The full-automatic pressure testing machine comprises a testing base frame, a high-frequency stamping assembly and a dense pressure testing box, an adjusting base is fixed to the surface of the testing base frame, a hydraulic driving rod is installed on the surface of the adjusting base, and the output end of the hydraulic driving rod is connected with the high-frequency stamping assembly. The high-frequency punching assembly comprises a driving box, a motor assembly, a punch shaft, a switcher, a punch disc and a static pressure disc. The motor assembly drives the punch shaft to achieve the high-frequency impact function through the tooth abutting action of a transmission fluted disc and the static pressure disc. Through the switching structure of the switcher and the driving of the motor assembly, the rapid switching function of a high-frequency impact test and a rotary wear resistance test is realized, the operation is convenient, and the functions are diversified; through hydraulic driving of the hydraulic driving rod and a sealed heating structure of the tight pressure testing box, the pressure stability and the environment authenticity in the testing process are ensured, and the reliability and the data accuracy of oil well cement performance testing are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil well cement pressure test technical field, concretely is a kind of oil well cement full-automatic pressure testing machine. BACKGROUND

[0002] At present, in the performance test field of oil well cement, the traditional test equipment mostly uses single-function testing machine to carry out wear resistance test or impact resistance test of cement sample block respectively. Wear resistance test usually evaluates the surface wear resistance of sample block by rotating friction test, and impact resistance test measures the impact resistance of cement sample block by high-frequency impact test in single direction. These devices are generally simple in structure and single in function, and are difficult to meet the comprehensive performance evaluation needs of oil well cement in complex downhole conditions. In addition, for the high temperature and high pressure conditions of oil well, the traditional equipment mostly lacks effective environmental simulation capability, and the accuracy and representativeness of test results are limited.

[0003] The traditional pressure testing machine is mainly used for uniaxial compression test, and cannot realize multi-mode test (such as impact test, wear resistance test, etc.). For example, in the performance test of oil well cement, only relying on the compression effect cannot comprehensively evaluate the impact resistance or wear resistance of the material. The limitation of test data is difficult to reflect the comprehensive performance of the material under complex conditions, especially in the high temperature and high pressure environment of oil well, the multi-dimensional performance (such as impact resistance and wear resistance) of the material is also important. In addition, the limitation of test data is difficult to reflect the comprehensive performance of the material under complex conditions, especially in the high temperature and high pressure environment of oil well, the multi-dimensional performance (such as impact resistance and wear resistance) of the material is also important. The material often faces dynamic load (such as the friction between downhole tool and cement or the impact caused by formation vibration) in actual application, and the traditional testing machine is difficult to provide effective test for these conditions.

[0004] Therefore, the existing problems are researched and improved, and the oil well cement full-automatic pressure testing machine is provided to solve the existing problems, so as to solve the problems and improve the practical value through the technology. CONTENT OF UTILITY MODEL

[0005] The utility model aims at solving the technical problems existing in prior art or related technology.

[0006] The utility model discloses a test base frame, high -frequency stamping assembly and dense pressure test box and the adjusting seat fixed to the surface of test base frame. The surface fixed mounting of adjusting seat has hydraulic drive rod, and the output of hydraulic drive rod is fixedly connected with the top surface of high -frequency stamping assembly. The high -frequency stamping assembly includes drive box, motor assembly, punch shaft, switcher and punch disc and the static pressure disc fixed in the inside of drive box. The output of motor assembly is equipped with the key shaft, and the surface of punch shaft is equipped with the transmission gear disc of transmission meshing with the surface transmission of key shaft, and the transmission gear disc surface of punch shaft is equipped with the transmission gear disc of opposite arrangement with static pressure disc, and transmission gear disc and static pressure disc opposite surface all are equipped with the resistance tooth. The top end of punch shaft is equipped with the top pearl, and the inside of switcher is equipped with the slideable girder, and the surface of girder is opened with the ball groove of adaptation with top pearl. Punch disc is fixed to the bottom of punch shaft, and the bottom of punch disc is penetrated to the inside of dense pressure test box, and the inside of dense pressure test box is fixedly installed with the pct heating plate.

[0007] Through adopting the above technical scheme, the utility model discloses a switch structure of switcher in high -frequency stamping assembly, and the high -frequency impact and rotation wear -resisting double -mode test are realized by the driving punch shaft of motor assembly. Meanwhile, through the hydraulic action of hydraulic drive rod, the down pressure stability of whole test process is ensured.

[0008] In a preferred example, the utility model discloses a motor assembly through the key shaft and transmission gear disc realize the rotation drive of punch shaft and punch disc.

[0009] Through adopting the above technical scheme, the utility model discloses the transmission meshing structure of motor assembly and transmission gear disc, realizes the accurate drive to punch shaft, and ensures the reliability and stability in high -frequency impact and rotation.

[0010] In a preferred example, the utility model discloses a spring between static pressure disc and guide gear disc is sleeved on the surface of punch shaft, and the spring is used for pushing the punch shaft relatively away from the surface of static pressure disc.

[0011] Through adopting the above technical scheme, the utility model discloses the elastic action of spring assembly, realizes automatic reset when switching different test modes, simplifies mode switching operation, and improves the convenience of equipment.

[0012] In a preferred example, the utility model discloses a punch disc is detachably arranged at the bottom of punch shaft, is used for pressing the surface of oil well cement sample block and carries out pressure test, and the hydraulic drive rod is used for providing the down pressure force of high -frequency stamping assembly and punch disc as a whole.

[0013] Through adopting the above technical scheme, the utility model discloses the detachable design of punch disc, and the quick replacement of different samples is facilitated, and the stability and uniformity of down pressure are ensured by the hydraulic action of hydraulic drive rod.

[0014] The utility model discloses in a preferable example can be further configured as: the bottom of punch disc is ground sand surface structure, is used for carrying out oil well cement sample block surface wear resistance test in rotary motion.

[0015] Through the above technical scheme, the utility model discloses the high -efficient friction test of cement sample block surface is realized through the sand surface design of punch disc, and the wear resistance of accurate evaluation is realized.

[0016] The utility model discloses in a preferable example can be further configured as: the top end of punch shaft is through static pressure disc and is contacted with switcher surface, static pressure disc sliding sleeve joint is in punch shaft surface, and the opposite surface of guide toothing disc and static pressure disc is equipped with a plurality of resistance tooth.

[0017] Through the above technical scheme, the utility model discloses the quick impact loading is realized in high -frequency impact test through the interaction of guide toothing disc and static pressure disc surface resistance tooth, and the test efficiency is effectively promoted.

[0018] The utility model discloses in a preferable example can be further configured as: the top surface of dense pressure test box is seted up with the sleeve hole of punch disc adaptation, and dense pressure test box is sealed box body structure, and dense pressure test box is heat insulation material member.

[0019] Through the above technical scheme, the utility model discloses the high -temperature high -pressure environment of oil well can be simulated through the sealing and heat insulation design of dense pressure test box, and the authenticity and reliability of test result are ensured.

[0020] The utility model discloses the beneficial effect obtained as follows:

[0021] 1. In the utility model, through the switching structure of switcher, the rotary motion of punch shaft is driven in combination with motor assembly, realizes the surface wear resistance test of oil well cement sample block, or realizes the high -frequency impact test of oil well cement sample block in combination with the resistance tooth effect of guide toothing disc and static pressure disc, and the quick switching of impact mode and wear mode is conveniently realized, and the functional diversity and operation convenience of test equipment are improved.

[0022] 2. In the utility model, through the hydraulic drive function of hydraulic drive rod, the stable pressing of high -frequency punch assembly and punch disc whole is realized, and the pressure stability and reliability in the impact and wear test process are ensured, further, the real working condition under the high -temperature high -pressure environment of oil well can be simulated through the sealed box body design of dense pressure test box and the heating function of pct heating plate, and the accuracy and reliability of test data are ensured. ACCURACY

[0023] Figure 1 It is the whole structure schematic diagram of an embodiment of the utility model;

[0024] Figure 2 High frequency stamping assembly and pressure test box cross section structure schematic view of one embodiment of the utility model;

[0025] Figure 3 Punch shaft, switch and punch disc structure schematic view of one embodiment of the utility model;

[0026] Figure 4 Switch cross section structure schematic view of one embodiment of the utility model.

[0027] Reference signs:

[0028] 100, test base frame; 110, adjusting seat; 120, hydraulic drive rod; 200, high frequency stamping assembly; 210, drive box; 220, motor assembly; 230, punch shaft; 240, switch; 250, punch disc; 260, static pressure disc; 221, key shaft; 231, transmission gear disc; 232, guide gear disc; 233, top bead; 241, beam; 242, ball groove; 300, pressure test box; 310, pct hot plate. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further explained in detail below by combining with specific implementation manners and referring to the drawings. It should be explained that the embodiments of the utility model and the features in the embodiments can be combined mutually without conflict.

[0030] It is understood that these descriptions are only exemplary, and are not intended to limit the scope of the utility model.

[0031] The utility model is described below by combining with the drawings. Figures 1-4 Some embodiments of the utility model provide a full-automatic pressure testing machine for oil well cement.

[0032] Embodiment one

[0033] The utility model discloses a test base frame 100, high frequency stamping assembly 200 and dense pressure test box 300 and the adjusting seat 110 fixed to the surface of test base frame 100. The surface fixed mounting of adjusting seat 110 has hydraulic drive rod 120, and the output end of hydraulic drive rod 120 is fixedly connected with the top surface of high frequency stamping assembly 200. High frequency stamping assembly 200 includes drive box 210, motor assembly 220, punch shaft 230, switcher 240 and punch disc 250 and the static pressure disc 260 fixed in the inner side of drive box 210. The output end of motor assembly 220 is equipped with key shaft 221, and the surface of punch shaft 230 is equipped with transmission gear disc 231 with the surface transmission meshing of key shaft 221, and the surface of punch shaft 230 is equipped with transmission gear disc 231 with static pressure disc 260 opposite arrangement, and transmission gear disc 231 and static pressure disc 260 opposite face all are equipped with resistance tooth. The top end of punch shaft 230 is equipped with top bead 233, and the inner side of switcher 240 is equipped with slidable girder 241, and the surface of girder 241 is equipped with ball groove 242 with top bead 233 adaptation. Punch disc 250 is fixed to the bottom end of punch shaft 230, and the bottom end of punch disc 250 is penetrated to the inner side of dense pressure test box 300, and the inner side of dense pressure test box 300 is fixedly installed with pct heating plate 310.

[0034] In practical application, the motor assembly 220 drives punch shaft 230 to rotate through key shaft 221, and through the resistance tooth action between transmission gear disc 231 and static pressure disc 260, impact test of punch disc 250 in high frequency impact mode is realized. Hydraulic drive rod 120 provides stable down pressure for high frequency stamping assembly 200, and meanwhile, pct heating plate 310 heats the sample block in dense pressure test box 300, so that the internal environment temperature of dense pressure test box 300 is raised to a preset value, and the working environment under high temperature and high pressure of oil well is simulated. In the rotating wear test mode, top bead 233 is separated from ball groove 242 through sliding girder 241, and punch disc 250 is driven by the rotary motion of punch shaft 230 to rotate and rub on the surface of the sample block, so as to test the wear resistance of oil well cement.

[0035] Embodiment two

[0036] In this embodiment, the basic structure of embodiment one is optimized and extended.

[0037] Elastic adjustment function: the surface of punch shaft 230 is sleeved with spring assembly, and the spring is located between static pressure disc 260 and guide tooth disc 232, which is used for buffering the impact action of punch shaft 230 in high frequency impact mode. In the rotating wear test mode, the spring pushes punch shaft 230 back to the initial position, so as to ensure the stability of test switching.

[0038] Sealing and heat insulation optimization: the pressure test box 300 adopts a fully enclosed structure, the shell is made of heat insulation material, and a cooling pipeline is arranged outside the pressure test box 300, which is used to quickly reduce the temperature inside the pressure test box 300 after high temperature test, so as to facilitate the safe removal of the sample block.

[0039] Pressure dynamic adjustment: the hydraulic drive rod 120 is connected with a control module, which monitors the pressure of the high-frequency stamping assembly 200 in real time, and automatically adjusts the pressure value according to the test requirements, so as to ensure the accuracy and consistency of the test data.

[0040] Expansion explanation

[0041] In the high-frequency impact mode, by adjusting the tooth shape parameters of the transmission tooth disc 231 and the static pressure disc 260, the impact frequency and impact strength can be changed to adapt to the test requirements of different oil well cement samples.

[0042] In the rotary wear test mode, the surface of the punch disc 250 can be replaced with different roughness sanding structures according to test requirements, which is used to test the wear resistance of different material samples.

[0043] Summary

[0044] The two embodiments of the utility model respectively show the specific application of high-frequency impact test and rotary wear test, through the expansion of the functions of elastic adjustment, sealing and heat insulation optimization and pressure dynamic adjustment, the application range and test precision of the equipment are improved, and the comprehensive evaluation requirements of the performance of oil well cement under different working conditions can be met.

[0045] The working principle and use process of the utility model:

[0046] Select appropriate oil well cement sample and place it on the top surface of the pct heating plate 310 in the pressure test box 300, under the heating action of the pct heating plate 310, the temperature of the oil well cement sample and the environment temperature in the pressure test box 300 are increased to the specified test temperature;

[0047] High-frequency impact test mode; the top bead 233 at the top end of the punch shaft 230 is located inside the ball groove 242, so as to reduce the gap between the guide tooth disc 232 and the static pressure disc 260, further, under the action of the pressure test box 300, the punch disc 250 is pressed against the surface of the oil well cement sample, and the spring compression amount between the guide tooth disc 232 and the static pressure disc 260 is maximum, the relative surfaces of the guide tooth disc 232 and the static pressure disc 260 are in contact, and then in the process of driving the punch shaft 230 to rotate by the key shaft 221, the high-frequency impact action of the punch shaft 230 and the punch disc 250 is realized through the surface tooth action of the guide tooth disc 232 and the static pressure disc 260, and the high-frequency impact test on the surface of the oil well cement sample is realized by cooperating with the pressure action of the hydraulic drive rod 120, so as to test the impact resistance of the oil well cement sample.

[0048] The surface wear resistance test mode: the cross push truss rod 241 makes the top bead 233 separate from the ball groove 242 and abuts with the bottom surface of the truss rod 241, and then the distance between the guide tooth disc 232 and the static pressure disc 260 is expanded, and the two are separated from each other, under the work of the motor assembly 220, the punch shaft 230 and the punch disc 250 rotate, and the surface of the oil well cement sample block is polished by the bottom end of the punch disc 250, and the wear resistance of the oil well cement sample block is tested.

[0049] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A fully automatic pressure testing machine for oil well cement, characterized in that, include: The test base (100), high-frequency stamping assembly (200), and pressure test box (300) are provided, along with an adjustment seat (110) fixed to the surface of the test base (100). A hydraulic drive rod (120) is fixedly mounted on the surface of the adjustment seat (110). The output end of the hydraulic drive rod (120) is fixedly connected to the top surface of the high-frequency stamping assembly (200). The high-frequency stamping assembly (200) includes a drive box (210), a motor assembly (220), a punch shaft (230), a switch (240), a punch disc (250), and a static pressure disc (260) fixed inside the drive box (210). The output end of the motor assembly (220) is provided with a key shaft (221), and the surface of the punch shaft (230) is provided with a key shaft (221). 21) A transmission gear disc (231) with surface transmission engagement, wherein the surface of the punch shaft (230) is provided with a guide gear disc (232) arranged opposite to the static pressure disc (260), and both the guide gear disc (232) and the static pressure disc (260) are provided with abutting teeth, the top of the punch shaft (230) is provided with a top ball (233), the inner side of the switch (240) is provided with a sliding string (241), the surface of the string (241) is provided with a ball groove (242) adapted to the top ball (233), the punch disc (250) is fixed to the bottom end of the punch shaft (230), and the bottom end of the punch disc (250) extends through to the inner side of the pressure test box (300), and a PCT heating plate (310) is fixedly installed on the inner side of the pressure test box (300).

2. The fully automatic pressure testing machine for oil well cement according to claim 1, characterized in that, The motor assembly (220) drives the rotation of the punch shaft (230) and punch disk (250) through the key shaft (221) and the transmission gear disk (231).

3. The fully automatic pressure testing machine for oil well cement according to claim 1, characterized in that, A spring is sleeved on the surface of the punch shaft (230) between the static pressure plate (260) and the guide gear plate (232), and the spring is used to push the punch shaft (230) relatively away from the surface of the static pressure plate (260).

4. The fully automatic pressure testing machine for oil well cement according to claim 1, characterized in that, The punch plate (250) is detachably arranged at the bottom end of the punch shaft (230) and is used to press against the surface of the oil well cement sample block for pressure testing. The hydraulic drive rod (120) is used to provide the overall downward pressure force of the high-frequency stamping assembly (200) and the punch plate (250).

5. The fully automatic pressure testing machine for oil well cement according to claim 1, characterized in that, The bottom surface of the punch plate (250) has a frosted surface structure, which is used to perform wear resistance testing on the surface of oil well cement samples during rotation.

6. The fully automatic pressure testing machine for oil well cement according to claim 1, characterized in that, The top end of the punch shaft (230) passes through the static pressure plate (260) and contacts the surface of the switch (240). The static pressure plate (260) is slidably sleeved on the surface of the punch shaft (230). The relative surfaces of the guide tooth plate (232) and the static pressure plate (260) are provided with several abutting teeth.

7. The fully automatic pressure testing machine for oil well cement according to claim 1, characterized in that, The top surface of the pressure test box (300) is provided with a sleeve hole that is compatible with the punch plate (250). The pressure test box (300) is a sealed box structure and is made of heat-insulating material.

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