阅读说明：本技术 固井水泥浆低温稠化仪 (Low-temperature thickening instrument for well cementation cement slurry ) 是由 刘浩亚 鲍洪志 李燕 陈向军 豆宁辉 牛成成 廖璐璐 金鑫 于 2019-04-09 设计创作，主要内容包括：本发明提出了一种固井水泥浆低温稠化仪,包括机箱,所述机箱的上面设置有操作台,所述操作台上设置有控制板；设置在所述机箱内的至少一个浆杯安装装置,所述浆杯安装装置上安装有浆杯,所述浆杯上设置有稠度表,所述稠度表测量所述浆杯内的物体的稠化度；设置在所述机箱内的温度调节装置,所述温度调节装置连接所述浆杯,并控制所述浆杯的温度；以及设置在所述控制板上的控制装置,所述控制装置包括控制所述浆杯安装装置旋转的电机控制装置,以及所述控制所述温度调节装置的温控装置。本发明能够模拟低温环境下固井水泥浆的稠化状况。(The invention provides a low-temperature thickening instrument for well-cementing cement slurry, which comprises a case, wherein an operation table is arranged on the case, and a control panel is arranged on the operation table; the device comprises a case, at least one slurry cup mounting device arranged in the case, wherein a slurry cup is mounted on the slurry cup mounting device, a consistency meter is arranged on the slurry cup, and the consistency meter is used for measuring the consistency of an object in the slurry cup; the temperature adjusting device is arranged in the case, is connected with the pulp cup and controls the temperature of the pulp cup; and the control device is arranged on the control panel and comprises a motor control device for controlling the rotation of the pulp cup mounting device and a temperature control device for controlling the temperature adjusting device. The invention can simulate the thickening condition of the well cementation cement slurry in a low-temperature environment.)

1. A low-temperature thickening instrument for well cementation cement slurry is characterized by comprising:

the device comprises a case, wherein an operation table is arranged on the case, and a control panel is arranged on the operation table;

the device comprises a case, at least one slurry cup mounting device arranged in the case, wherein a slurry cup is mounted on the slurry cup mounting device, a consistency meter is arranged on the slurry cup, and the consistency meter is used for measuring the consistency of an object in the slurry cup;

the temperature adjusting device is arranged in the case, is connected with the pulp cup and controls the temperature of the pulp cup; and

the control device is arranged on the control panel and comprises a motor control device for controlling the pulp cup mounting device to rotate and a temperature control device for controlling the temperature adjusting device.

2. The cementing slurry low-temperature thickening instrument according to claim 1, wherein the slurry cup mounting device comprises a rotating disk for fixing the upper part of the slurry cup and a fixed seat for fixing the lower part of the slurry cup, and a power device is arranged on the fixed seat and drives the rotating disk to rotate.

3. The cementing slurry low-temperature thickening instrument according to claim 2, wherein the thickening meter comprises a dial plate arranged at the upper end of the slurry cup, and a measuring piece extending into the slurry cup is arranged on the dial plate;

the dial plate clamping groove is formed in the operating table, the dial plate is clamped in the dial plate clamping groove, and a torque measuring device is arranged in the dial plate clamping groove.

4. The low-temperature thickening instrument for the well cementation cement slurry as claimed in claim 3, wherein a clamping column is arranged at the upper part of the slurry cup, and a clamping groove is arranged at a corresponding position at the upper part of the rotating disc; the clamping column is detachably clamped in the clamping groove.

5. The cementing slurry low-temperature thickening apparatus according to any one of claims 1 to 4, wherein the temperature adjusting device comprises a freezing cylinder coated outside the slurry cup, and a cooling circulation device is connected to the freezing cylinder.

6. The cementing slurry low-temperature thickening instrument according to claim 5, wherein the cooling circulation device comprises an evaporator pipeline wound outside the freezing cylinder, and an input pipeline and an output pipeline are respectively arranged at two ends of the evaporator pipeline;

wherein, be connected with refrigerant compressor and condenser pipe between input pipeline and the output line.

7. The cementing slurry low-temperature thickening instrument according to claim 6, wherein a throttle valve is arranged on the input pipeline.

8. The cementing slurry low-temperature thickening instrument according to claim 6 or 7, wherein a temperature measuring device is arranged on the freezing cylinder, and the temperature measuring device is connected with the input end of the temperature control device; and the temperature control device controls the operation of the refrigeration compressor according to the temperature information input by the temperature measuring device.

9. The cementing slurry low-temperature thickening instrument according to claim 8, wherein the temperature measuring device is a thermocouple.

10. The cementing slurry cryothickening apparatus of claim 8, wherein the number of slurry cups is two and the number of slurry cup mounting devices is also two.

Technical Field

The invention relates to a low-temperature thickening instrument for well cementation cement slurry, and belongs to the field of well cementation engineering test devices in oil gas development.

Background

In the development of low-temperature well cementation cement slurry, in order to overcome the problem that cement particles are slow in hydration speed or even completely unhydrated in a low-temperature environment, technicians usually add high-efficiency additives to promote the rapid hydration of cement, so that the cement has reasonable low-temperature performance. The low-temperature cement slurry added with the high-efficiency additive is very sensitive to temperature, and the design applicable temperature of each performance of the low-temperature cement slurry is usually 4 ℃ to-8 ℃. However, the laboratory temperature is usually about 26 ℃, and the experimental test temperature of the low-temperature cement slurry in indoor research is usually 20 ℃ to 30 ℃ higher than the design temperature. The high-efficiency additive can cause the cement paste to hydrate too fast at such high environmental temperature, and the consistency is increased rapidly, so that the real low-temperature thickening performance of the cement paste cannot be tested and obtained.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a low-temperature thickening instrument for well-cementing cement slurry, which can test the low-temperature thickening performance of the cement slurry at room temperature in a laboratory, truly simulate the pumping process at low temperature or even negative temperature outdoors, realize the test of the low-temperature thickening performance of the cement slurry at room temperature, and prevent data distortion or over-rapid solidification of the low-temperature cement slurry in the thickness test process at room temperature.

In order to achieve the above object, the present invention provides a low temperature thickening instrument for well cementation cement slurry, comprising:

the device comprises a case, wherein an operation table is arranged on the case, and a control panel is arranged on the operation table;

the device comprises a case, at least one slurry cup mounting device arranged in the case, wherein a slurry cup is mounted on the slurry cup mounting device, a consistency meter is arranged on the slurry cup, and the consistency meter is used for measuring the consistency of an object in the slurry cup;

the temperature adjusting device is arranged in the case, is connected with the pulp cup and controls the temperature of the pulp cup; and

the control device is arranged on the control panel and comprises a motor control device for controlling the pulp cup mounting device to rotate and a temperature control device for controlling the temperature adjusting device.

The invention is further improved in that the pulp cup mounting device comprises a rotating disc and a fixed seat, wherein the rotating disc is used for fixing the upper part of the pulp cup, the fixed seat is used for fixing the lower part of the pulp cup, a power device is arranged on the fixed seat, and the power device drives the rotating disc to rotate.

The invention is further improved in that the consistency meter comprises a dial plate arranged at the upper end of the slurry cup, and a measuring part extending into the slurry cup is arranged on the dial plate;

the dial plate clamping groove is formed in the operating table, the dial plate is clamped in the dial plate clamping groove, and a torque measuring device is arranged in the dial plate clamping groove.

The invention has the further improvement that the upper part of the pulp cup is provided with a clamping column, and the corresponding position of the upper part of the rotating disc is provided with a clamping groove; the clamping column is detachably clamped in the clamping groove.

The invention is further improved in that the temperature adjusting device comprises a freezing cylinder coated outside the slurry cup, and a cooling circulation device is connected with the freezing cylinder.

The invention is further improved in that the cooling circulation device comprises an evaporator pipeline wound outside the freezing cylinder, and an input pipeline and an output pipeline are respectively arranged at two ends of the evaporator pipeline;

wherein, be connected with refrigerant compressor and condenser pipe between input pipeline and the output line.

A further development of the invention is that a throttle valve is arranged on the inlet line.

The invention has the further improvement that a temperature measuring device is arranged on the freezing cylinder and is connected with the input end of the temperature control device; and the temperature control device controls the operation of the refrigeration compressor according to the temperature information input by the temperature measuring device.

In a further development of the invention, the temperature measuring device is a thermocouple.

The invention is further improved in that the number of the pulp cups is two, and the number of the pulp cup mounting means is also two.

In a further development of the invention, the temperature measuring device is a thermocouple.

Compared with the prior art, the invention has the advantages that:

the low-temperature thickening instrument for the well cementation cement slurry can test the low-temperature thickening performance of the cement slurry in a laboratory at room temperature, truly simulate the pumping process under outdoor low-temperature and even negative-temperature conditions, realize the test of the low-temperature thickening performance of the cement slurry in a room-temperature environment, and prevent data distortion or over-rapid solidification of the low-temperature cement slurry in the thickness test process at room temperature.

Drawings

Preferred embodiments of the present invention will be described in detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic diagram showing the external structure of a cementing slurry low-temperature thickening apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram showing the internal structure of a cementing slurry low-temperature densifier according to an embodiment of the present invention.

In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.

The meaning of the reference symbols in the drawings is as follows: 1. the automatic temperature control device comprises a case, 2, a pulp cup mounting device, 3, a temperature adjusting device, 4, a consistency meter, 5, a motor control device, 6, a temperature control device, 11, an operation table, 12, a control panel, 13, a dial clamping groove, 21, a pulp cup, 22, a rotating disc, 23, a fixed seat, 24, a clamping groove, 25, a clamping column, 31, a freezing cylinder, 32, an evaporator pipeline, 33, an input pipeline, 34, an output pipeline, 35, a refrigeration compressor, 36, a condenser pipe, 37, a throttle valve, 41, a dial, 61 and a temperature measuring device.

Detailed Description

In order to make the technical solutions and advantages of the present invention more apparent, exemplary embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is clear that the described embodiments are only a part of the embodiments of the invention, and not an exhaustive list of all embodiments. And the embodiments and features of the embodiments may be combined with each other without conflict.

FIG. 1 schematically shows a cementing slurry low temperature viscosifier in accordance with one embodiment of the present invention. According to the low-temperature thickening instrument for the well cementation cement slurry, the low-temperature thickening performance of the cement slurry can be tested in a laboratory at room temperature, the pumping process under outdoor low-temperature and even negative-temperature conditions is truly simulated, the low-temperature thickening performance of the cement slurry is tested in a room-temperature environment, and data distortion or over-rapid solidification of the low-temperature cement slurry in the thickness testing process at room temperature is prevented.

As shown in fig. 1, the cementing slurry low-temperature thickening apparatus according to one embodiment of the present invention includes a casing 1. The case 1 is of an approximately cuboid structure, the upper end face of the case is provided with an operating platform 11, and the operating platform is used for installing a slurry cup 21, filling cement and the like; an operation panel is arranged at the rear part of the operation table 11 and is used for operating a control device so as to control the test. At least one slurry cup 21 is arranged on the case 1, the number of the slurry cups 21 can be designed according to different requirements, and two slurry cups 21 are preferred in the embodiment. The slurry cup 21 is of a cylindrical structure, and the upper end of the slurry cup is provided with a consistency meter which can measure the thickening degree of an object in the slurry cup 21. The cementing slurry low-temperature thickening instrument further comprises a temperature adjusting device 3, wherein the temperature adjusting device 3 is arranged in the case 1, is connected with the slurry cup 21 and can adjust the temperature in the slurry cup 21. During the test, the temperature adjusting device 3 can keep the inside of the slurry cup 21 in a low temperature state (-8 ℃ to 4 ℃), so that the thickening data in the low temperature state can be measured. The machine case 1 is also internally provided with a control device which is arranged on a control panel 12 of the machine case 1. The control device comprises a motor control device for controlling the pulp cup installation device 2 to rotate and a temperature control device 6 for controlling the temperature adjusting device 3.

In using the cementing slurry cryo-densifier according to the present embodiment, the slurry cup 21 is first mounted on the console 11 and the cement slurry is injected into the slurry cup 21. The temperature control device 6 controls the temperature adjusting device 3 to adjust the temperature in the slurry cup 21, so that the temperature in the slurry cup 21 is always in a low-temperature state, and the consistency of the cement slurry in the slurry cup 21 is measured through the consistency meter, so that the thickening condition of the cement slurry in the low-temperature state is measured. The well cementation cement slurry low temperature thickening instrument can test the low temperature thickening performance of cement slurry in a laboratory at room temperature, truly simulate the pumping process under outdoor low temperature and even negative temperature conditions, realize the test of the low temperature thickening performance of the cement slurry in the room temperature environment, and prevent data distortion or over-quick solidification of the low temperature cement slurry in the process of testing the consistency of the low temperature cement slurry at room temperature.

In one embodiment, the pulp cup mounting device 2 comprises a rotary disk 22, the upper part of the rotary disk 22 is connected with the upper part of the pulp cup 21, and the rotary disk 22 can drive the pulp cup 21 to rotate. The pulp cup mounting device 2 further comprises a fixed seat 23, and the fixed seat 23 is fixed below the pulp cup 21. The fixed seat 23 is provided with a power device, preferably a motor, and the power device drives the rotating disc 22 to rotate.

When the cementing slurry low-temperature thickening instrument according to the embodiment is used, the power device in the fixed seat 23 rotates to drive the rotating disc 22 to rotate, so that the slurry cup 21 is driven to rotate. During the rotation, the cement slurry in the slurry cup 21 is gradually solidified, and the consistency meter can measure the consistency of the cement slurry according to the torque generated when the slurry cup 21 rotates, thereby measuring the thickening condition of the cement slurry in a low-temperature state.

In one embodiment the consistency meter comprises a dial 41, said dial 41 being arranged at the upper end of the pulp cup 21, preferably in a disc-shaped configuration, the lower surface of the dial 41 being provided with a measuring member, which is able to extend into the pulp cup 21. In this embodiment, the measuring member is a rod, a bar or other structure, and can be inserted into the grout when extending into the grout cup 21. The operating table 11 is provided with a dial plate clamping groove 13, the dial plate 41 is clamped in the dial plate clamping groove 13, and a torque measuring device is arranged in the dial plate clamping groove 13.

In the low-temperature thickening instrument for the well cementation cement slurry according to the embodiment, the dial plate 41 of the thickening meter is clamped in the dial plate clamping groove 13, and the measuring piece extends into the slurry cup 21. When the slurry cup 21 rotates, the measuring piece can be acted by the slurry, so that torque is generated between the dial plate clamping groove 13 and the dial plate 41. The consistency of the cement slurry changes in the solidification process of the cement slurry, the acting force on the measuring part also changes, and the torque between the dial plate clamping groove 13 and the dial plate 41 also changes. The thickening state of the cement slurry can be judged according to the measured data of the torque measuring device.

In a preferred embodiment, the upper part of the pulp cup 21 is provided with a clamping column 25, the clamping column 25 is arranged on the side wall of the pulp cup 21, a clamping groove 24 is arranged at a corresponding position of the upper part of the rotating disc 22, and the clamping groove 24 can be matched with the clamping column 25. The clamping column 25 is detachably clamped in the clamping groove 24. The pulp cup 21 and the rotary disk 22 can be stably and fixedly connected through the matching of the clamping groove 24 and the clamping column 25, the pulp cup 21 can be driven to rotate in the rotating process of the rotary disk 22, the clamping column 25 and the clamping groove 24 are convenient to disassemble, and the pulp cup 21 and the rotary disk 22 are convenient to separate.

In one embodiment, the temperature adjustment device 3 comprises a freezing cylinder 31. The freezing cylinder 31 is a cylindrical structure, and covers the outside of the pulp cup 21. The freezing cylinder 31 is connected with a cooling circulation device. The cooling circulation device can take away the heat of the freezing cylinder 31, so that the freezing cylinder 31 is always kept in a low-temperature state and circulates to the outside of the freezing cylinder 31 to dissipate the heat.

In the low-temperature thickening instrument for well-cementing cement slurry according to the embodiment, the cooling circulation device can take away the heat in the freezing cylinder 31, so that the freezing cylinder 31 is always kept in a low-temperature state, and the temperature in the slurry cup 21 is always kept in a low-temperature state (-8 ℃ to 4 ℃) required by the test.

In one embodiment, the cooling cycle device includes an evaporator line 32 provided on the freezing cylinder 31, and the evaporator line 32 is uniformly wound on the outer wall of the freezing cylinder 31. An input line 33 and an output line 34 are respectively provided at both ends of the evaporator line 32, and the cooling medium enters the evaporator line 32 from the input line 33 and flows out through the output line 34. A refrigerant compressor 35 and a condenser tube 36 are connected between the input line 33 and the output line 34. In this embodiment, an input line 33 is provided at an upper port of the evaporator line 32, an output line 34 is provided at a lower port of the evaporator line 32, the input line 33 is connected to a condenser 36, and the output line 34 is connected to a refrigerant compressor 35. The refrigerant compressor 35 is connected to a condenser pipe 36 to form a cycle.

In the cementing slurry low-temperature thickening instrument according to the embodiment, the built-in refrigerating device can control the temperature of the refrigerating cylinder 31 through the refrigerating compressor 35. The refrigerant gas is pressurized by the refrigerant compressor 35 and then sent to the condensation pipe 36, and the gaseous high-pressure refrigerant releases heat in the condensation pipe 36 to form liquid high-pressure refrigerant. The liquid high-pressure refrigerant evaporator line 32 absorbs heat to be gasified while rapidly lowering the temperature of the freezing cylinder 31. Finally, the low-pressure gas refrigerant enters the compressor again to complete the refrigeration cycle.

In a preferred embodiment, a throttle valve 37 is provided on the inlet line 33. A throttle valve 37 is arranged at the outlet of the condenser pipe 36 and is connected to the inlet of the evaporation line via the inlet line 33. By providing the throttle valve 37, the high-pressure liquid refrigerant flowing out of the condenser pipe 36 can be changed to a low-pressure liquid refrigerant, and the low-pressure liquid refrigerant can be more easily vaporized in the evaporator line 32.

In one embodiment, a temperature measuring device 61 is disposed on the freezing cylinder 31, and the temperature measuring device 61 can measure the temperature of the freezing cylinder 31. The temperature measuring device 61 is connected to the input end of the temperature control device 6, and transmits the measured temperature information of the freezing cylinder 31 to the temperature control device 6. The output end of the temperature control device 6 is connected with the refrigeration compressor 35. In a preferred embodiment, the temperature measuring device 61 is a thermocouple.

In the cementing slurry low-temperature thickening apparatus according to the present embodiment, the temperature measuring device 61 can measure the temperature inside the freezing cylinder 31 and transmit the temperature information to the temperature control device 6. The temperature control device 6 judges whether the temperature in the freezing cylinder 31 is in a low temperature state according to the temperature information, and controls the operation of the refrigeration compressor 35 if the temperature is too high, so that the temperature in the freezing cylinder 31 is rapidly reduced; if the temperature is too low, the operation of the refrigerant compressor 35 is controlled to be stopped.

The temperature control device 6 not only has the functions of displaying the real-time temperature in the pulp cup 21 and controlling the work of the compressor, but also can control the freezing speed of the freezing chamber and set a temperature reduction program. When the mortar is used, the negative temperature cement slurry mixing solution is firstly led into the slurry cup 21 and cooled to the target temperature, and then the cement dry powder is added for stirring, so that the low temperature field environment can be simulated to the maximum extent.

In one embodiment, the number of the pulp cups 21 is two, and the number of the pulp cup mounting means 2 is also two. The two pulp cups 21 can be respectively tested, the test results are not affected with each other, and the test efficiency is improved; the two slurry cups 21 can also be used for carrying out experiments simultaneously, so that the test results are compared, and the accuracy of the test results is improved.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, the appended claims are intended to be construed to include preferred embodiments and all such changes and/or modifications as fall within the scope of the invention, and all such changes and/or modifications as are made to the embodiments of the present invention are intended to be covered by the scope of the invention.