An evaluation device and method for determining the working capacity of a reamer shoe based on the height of the wear

Abstract

The application provides an evaluation device and method for evaluating the working capacity of a press machine die based on die wear height measurement, which comprises a press device, a press machine die test device and a control and data transmission device. The method is to measure the wear height of different dies by using a die cutting measurement method, then to conduct a simulation experiment on the measured dies by using the device, and then to fit a formula of the mapping relationship between the die wear height and the die working capacity according to the simulation experiment results by using the least square method, so as to form an evaluation method for the working capacity of the press machine die. Through the above scheme, the quantitative evaluation of the working capacity of the press machine die at any stage during the on-site use is realized based on the die wear height measurement, the safety of the die use is greatly improved, and the application has high practical value and popularization value.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of oil and gas well pressure operation drilling and production, and specifically relates to an evaluation device and method for determining the working capacity of a pressure operation machine slip based on slip wear height. BACKGROUND

[0002] Pressure operation technology plays a crucial role in the oil and gas industry, especially when maintaining pressure conditions in the wellbore. Using pressure operation equipment to operate oil and gas strings significantly reduces potential contamination of the reservoir, maximizes protection of the formation and the operating environment, and lays a solid foundation for the sustainable development of oil and gas resources. In this process, slips are one of the key equipment, with a very high working frequency. The main function of the slip is to clamp, lift and lower the string, which requires it to keep the string firmly while preventing slipping and damaging the oil pipe. To meet these stringent requirements, the slip is equipped with a jaw plate with many jaw teeth that directly contact the oil and gas string. However, these teeth inevitably wear out over time, which affects the pressure operation capacity of the slip.

[0003] Evaluating and improving the working capacity of the pressure operation machine slip is crucial because the risk of oil and gas well pressure operation is extremely high, the operating conditions are complex and harsh, and the safety and reliability of the equipment are extremely demanding. If the performance of the slip declines, it may cause safety hazards such as slipping, increasing the risk of accidents such as blowouts and natural gas leaks, which not only threatens the safety of the operating personnel, but also causes huge economic losses.

[0004] Therefore, accurate evaluation of the working capacity of the slip and corresponding measures to improve and maintain it are key to ensuring the safety and efficiency of oil and gas well pressure operation. Through accurate evaluation of the working capacity of the slip, the operating risk can be minimized to ensure the sustainable development of oil and gas resources.

[0005] At present, the evaluation of the working capacity of the kava under pressure in China is mainly based on the wear degree of the kava teeth. For example, during the production and manufacturing of the kava, a row of limit teeth with lower tooth tip height than other teeth is arranged at the lowermost end of the kava teeth to judge the wear height of the kava teeth and whether the kava can continue to work. For example, the patent of a tooth plate structure for predicting tooth wear degree and a safety kava is applied for a Chinese utility model patent with the authorization announcement number CN217518614U, which proposes that "a tooth plate is provided with a plurality of rows of sawtooth-shaped tooth plate teeth, and the lower end of the lowermost row of tooth plate teeth is provided with a row of limit teeth for judging the wear height of the tooth plate teeth, and the tooth tip height of the limit teeth is lower than the tooth gap height of the tooth plate teeth." This technology cannot evaluate the safety of the kava that is not processed by this technology, nor can it evaluate the working capacity of the old kava that has been working. Moreover, this technology increases the processing cost of the kava. In order to avoid safety accidents of the kava during work, it is urgent to explore the evaluation method of the working capacity of the kava under pressure, to study the detection method of the kava, and to evaluate the working capacity of the kava. Therefore, a new technical solution is needed to solve the above technical problems. SUMMARY

[0006] To solve the above technical problems, the present application provides an evaluation device and method for determining the working capacity of the kava under pressure based on the wear height of the kava. The technical solution adopted by the present application is to obtain the mapping relationship between the wear height of the kava and the working capacity by using the device to conduct experiments, so as to realize the evaluation of the working capacity of the new and old kava under pressure, thereby saving cost and preventing direct safety accidents.

[0007] Further, the evaluation device for determining the working capacity of the kava under pressure based on the wear height of the kava, characterized in that it comprises a press device, a kava test device for the kava under pressure, a control and data transmission device.

[0008] Further, the press device has the ability to apply compression load to the object downward, and the press device comprises a base table for supporting the entire experimental device, a row frame welded on the base table of the press device, a top cover welded on the row frame, and a movable pressure arm installed between the row frames.

[0009] Further, the said working under pressure slips testing device, which is supported by welding on the base table of the press device, has the ability to convert the compression load applied by the press device downward into downward tensile load, and also has the ability to install the slips tooth plate and clamp the oil pipe, the said working under pressure slips testing device includes the oil pipe throughout the device, the plug at the bottom of the oil pipe using threaded connection, the pressure bar placed on the plug sink hole, the slips for clamping the oil pipe, the working under pressure slips seat for installing the slips, the support column using threaded connection with the working under pressure slips seat, and the hydraulic oil pump using threaded connection with the working under pressure slips seat through the hydraulic pipe;

[0010] Further, the said control and data transmission device, which realizes signal transmission in parallel communication with the press device, has the ability to control the load size of the press device and record in real time.

[0011] Further, the said evaluation method for determining the working capacity of the working under pressure slips based on the slips wear height, the steps are as follows:

[0012] First step, mix the inverse mold material first, cover the inverse mold material on the said slips, and fill the slips tooth gap to inverse mold, at the same time, inverse mold the slips with different wear heights by the same method, after standing for ten minutes, demold, according to the slip tooth distribution row number, cut the inverse mold with different wear heights into 0.2mm thick slices, place them on the projection measuring instrument to measure and record the slips wear height and number;

[0013] Second step, install the said working under pressure slips testing device on the base table of the press device, connect the hydraulic oil pump with the working under pressure slips seat, and control the working under pressure slips seat to open, select the measured slips to install on the working under pressure slips seat, place the said oil pipe in the working under pressure slips testing device, and use the 0.5m high cushion block to raise the oil pipe, use the said hydraulic oil pump to control the working under pressure slips seat to close, so that the slips clamp the oil pipe;

[0014] Third step, use the said control and data transmission device to control and record the load of the said press device, gradually increase the load of the press device until the oil pipe suddenly slips down, stop increasing the load, at this time, it is determined that the slips have failed, and the load of the press at this time is recorded, which is the maximum axial bearing capacity of the slips, i.e. the maximum working capacity, then use the hydraulic oil pump to open the working under pressure slips seat and take out the slips;

[0015] Fourth step, then replace the measured cardava, repeat the second step, the third step, after completing the experiment on all different wear height cardava, the mapping relationship between the wear height of different wear state cardava and the working capacity is fitted by the least square method, the formula of the wear height of cardava and the working capacity is as follows: F=400h 5 -4300h 4 +19300h 3 -46500h 2 +61700h-35800, F is the working capacity of the cardava, h is the wear height of the cardava;

[0016] Fifth step, the cardava to be used is measured by the die cutting measurement method in the first step, the wear height h1 of the cardava is measured, h1 is substituted into the formula F=400h 5 -4300h 4 +19300h 3 -46500h 2 +61700h-35800 in the fourth step, F1=400h1 5 -4300h1 4 +19300h1 3 -46500h1 2 +61700h1-35800 can be calculated F1, F1 is the working capacity of the cardava to be used, and the working capacity of the cardava of the belt pressure operation machine is evaluated by the method.

[0017] The present application has the following beneficial effects:

[0018] (1) The present application measures the wear height of the cardava by the die cutting measurement method.

[0019] (2) The present application simulates the actual working condition by building a simulation experiment device, so that the working performance data of new and old cardavas can be accurately obtained, the working capacity of the cardava is accurately evaluated, and the safety of the use of the belt pressure operation cardava is improved.

[0020] (3) The present application measures the working capacity of the cardava with different wear heights, establishes the mapping relationship between the wear height of the cardava and the working capacity, so that the working capacity of the cardava can be evaluated by measuring the wear height of the cardava in the field operation.

[0021] (4) The present application evaluates the working capacity of the cardava of the belt pressure operation machine by measuring the wear height of the cardava, so that the new cardava is replaced in advance due to the unknown working capacity of the worn cardava. DETAILED DESCRIPTION

[0022] Fig. 1 It is a schematic view of the press device structure of the present application.

[0023] Fig. 2 The figure is a structural schematic diagram of the slip test device for the snubbing unit.

[0024] Fig. 3 The figure is a structural schematic diagram of the present application.

[0025] Fig. 4 The figure is a method implementation flowchart of the present application.

[0026] Fig. 5 The figure is a measurement principle schematic diagram of the measurement of the slip wear height by the die-cutting measurement method.

[0027] Fig. 6 The figure is a mapping relationship schematic diagram between the different slip wear heights and the working capacity.

[0028] In the above figures, the component names corresponding to the reference numerals are as follows:

[0029] 1-press device, 11-top cover, 12-rack, 13-pressure arm, 14-press device base table, 2-slip test device for the snubbing unit, 21-pressure rod, 22-oil pipe, 23-slip, 24-slip seat for the snubbing unit, 25-plug, 26-support column, 27-hydraulic pump station, 3-control and data transmission equipment. DETAILED DESCRIPTION

[0030] The present application will be further described below in combination with the figures and examples, and the embodiments of the present application include but are not limited to the following examples.

[0031] Example

[0032] As shown in the figure, an evaluation device for determining the working capacity of the slip for the snubbing unit based on the slip wear height, the device comprises: Figs. 1 to 3

[0033] Press device 1, slip test device for the snubbing unit 2, control and data transmission device 3.

[0034] The press device 1 comprises: the base table 14 of the press device 1 for supporting the entire experimental device, the hydraulic drive pressure arm 13 of the press device 1 to apply a compression load downward, the rack 12 installed on the press device base table 14, the top cover 11 above the rack, and the moving pressure arm 13 installed between the racks 12.

[0035] ​Wherein the under pressure operation machine slip test device 2 is installed on the base table 14 of the press device 1, the under pressure operation machine slip test device 2 includes the pressure rod 21 in contact with the moving pressure arm 13, the oil pipe 22 bottom uses the thread to connect with the plug 25 to achieve a downward tensile load for the oil pipe 22, the slip 23 for clamping the oil pipe 22, the under pressure operation machine slip seat 24 for fixing the slip 23, the support column 26 for supporting the under pressure operation machine slip test device 2, the hydraulic oil pump 27 for providing the initial working pressure for the under pressure operation machine slip seat 24;

[0036] Wherein the control and data transmission device 3 is connected in parallel with the press device 1 to realize signal transmission, and the control and data transmission device 3 has the ability to control the load size of the press device 1 and record in real time.

[0037] As shown in Figs. 4 to 6 An evaluation method for determining the working capacity of the under pressure operation machine slip based on the slip wear height is shown in the following specific steps:

[0038] First, mix the inverse mold material, cover the inverse mold material on the slip 23, and fill the slip joint gap to inverse mold, at the same time, inverse mold the slips with different wear heights by the same method, after standing for ten minutes, demold, cut the molds with different wear heights into 0.2mm thick slices according to the slip tooth distribution row number, place them on the projection measuring instrument to measure and record the slip wear height and number;

[0039] Second, install the under pressure operation machine slip test device 2 on the press device base table 14, connect the hydraulic pump station 27 with the under pressure operation machine slip seat 24, and control it to open, select the measured slip 23 to install on the under pressure operation machine slip seat 24, place the oil pipe 22 in the under pressure operation machine slip test device 2, and use the 0.5m high cushion block to raise the oil pipe 22, use the hydraulic pump station 27 to control the under pressure operation machine slip seat 24 to close, so that the slip 23 clamps the oil pipe 22;

[0040] Third, use the control and data transmission device 3 to control and record the load of the press device 1, gradually increase the load of the press device 1 until the oil pipe 22 suddenly slips and drops, stop increasing the load, at this time, determine that the slip 23 fails, and record the press load 1 at this time, which is the maximum axial bearing capacity of the slip 23, i.e. the maximum working capacity, then use the hydraulic pump station 27 to open the under pressure operation machine slip seat 24, and take out the slip 23;

[0041] Fourth step, then replace the measured card 23, repeat the second step, the third step, after the completion of the experiment on all different wear height card 23, by least square fitting out the different wear state card 23 wear height and work capacity mapping relationship, the formula of card 23 wear height and work capacity is as follows F=400h 5 -4300h 4 +19300h 3 -46500h 2 +61700h-35800, F is the work capacity of card 23, h is the wear height of card 23;

[0042] Fifth step, using the die cutting measurement method in the first step, the card to be used is measured to obtain the wear height h1, h1 is substituted into the F=400h 5 -4300h 4 +19300h 3 -46500h 2 +61700h-35800 formula in the fourth step, F1=400h1 5 -4300h1 4 +19300h1 3 -46500h1 2 +61700h1-35800 can be calculated F1, F1 is the work capacity of the card to be used, and the work capacity of the card of the belt pressure operation machine is evaluated by the method.

[0043] The above examples are only preferred embodiments of the present application, and are not a limitation on the protection scope of the present application, but any change made on the basis of the design principle of the present application and non-creative labor shall belong to the protection scope of the present application.

Claims

1. A method for evaluating the working capacity of slips of a belt press machine based on slip wear height, characterized in that: The specific steps of the evaluation method are as follows: The first step is to mix the mold material, cover the mold material on the slip (23), and fill the gap between the teeth of the slip (23) to perform the mold. At the same time, the slips (23) with different wear heights are molded using the same method. After standing for ten minutes, the molds are demoulded. The molds with different wear heights after demoulding are cut into thin slices with a thickness of 0.2 mm according to the number of rows of teeth of the slip (23). The slices are placed on a projection measuring instrument to measure the wear height of the slip (23), record them, and number them. The second step is to install the pressure working machine slip test device (2) on the base platform (14) of the press device (1), wherein the pressure working machine slip test device (2) includes a pressure working machine slip seat (24), connect the hydraulic pump station (27) to the pressure working machine slip seat (24), and control the pressure working machine slip seat (24) to open, select a slip (23) after measurement and install it on the pressure working machine slip seat (24), pass the oil pipe (22) through the pressure working machine slip test device (2), and use a 0.5-meter-high pad to raise the oil pipe (22), and use the hydraulic pump station (27) to control the pressure working machine slip seat (24) to close, so that the slip (23) clamps the oil pipe (22); The third step is to use the control and data transmission device (3) to control the load of the press device (1) and record the load, gradually increase the load of the press device (1) until the oil pipe (22) suddenly slips and falls, stop increasing the load, determine that the slip (23) has failed at this time, and record the load of the press device (1) at this time. The load is the maximum axial load capacity of the slip (23), that is, the maximum working capacity, and then use the hydraulic pump station (27) to control the belt pressure operation machine slip seat (24) to open and remove the slip (23); In the fourth step, the measured slip (23) is replaced and the second and third steps are repeated. After completing the experiments on all slips (23) with different wear heights, the mapping relationship between the wear height and working capacity of the slips (23) in different wear states is fitted by the least square method, and the formula of the wear height and working capacity of the slip (23) is obtained as follows: , F is the working capacity of the slip (23), h is the wear height of the slip (23); In the fifth step, the die-cutting measurement method in the first step is used to measure the wear height h1 of the slip (23) to be used, and the wear height h1 is substituted into the formula described in the fourth step to calculate F1. F1 is the working capacity of the slip (23) to be used, thus completing the evaluation of the working capacity of the belt pressure operation machine slip (23).

Images