A deep well drilling while drilling bottom temperature and pressure measurement equipment

Abstract

The invention discloses a deep well drilling while-drilling bottom hole temperature and pressure measurement equipment, which relates to the technical field of drilling while-drilling measurement, and comprises a test main pipe, a casing one, a casing two and a clamping assembly, wherein the casing one is slidably sleeved on the inner side of the test main pipe, and the casing two is slidably sleeved on the outer side of the test main pipe, and the inner side of the casing one is circumferentially provided with a plurality of temperature sensors one and a pressure sensor one for monitoring the internal temperature and pressure data of the test main pipe, and the outer side of the casing two is circumferentially provided with a plurality of temperature sensors two and a pressure sensor two for monitoring the external temperature and pressure data of the test main pipe, and the two monitored temperature data and pressure data are comprehensively analyzed to make the monitored bottom hole temperature and pressure data more accurate, and the casing one and the casing two can slide and change their positions, so as to monitor a plurality of points in the wellbore, and further improve the accuracy of the monitoring data.

Description

Technical Field

[0001] The invention relates to the technical field of measurement while drilling, in particular to a device for measuring bottom hole temperature and pressure while drilling in deep wells. Background Art

[0002] In oil and gas drilling operations, with the expansion of exploration areas and development to deeper layers, drilling high-temperature and high-pressure wells has become the norm. Accurate measurement of bottom hole temperature and pressure is crucial for the safe control of drilling operations, optimization of drilling parameters, and prediction and evaluation of formation pressure. By measuring bottom hole temperature and pressure while drilling, abnormal conditions during drilling can be monitored in real time, drilling strategies can be adjusted in time, drilling risks can be reduced, and drilling efficiency can be improved. The bottom hole temperature and pressure measurement instrument while drilling mainly consists of two parts: a downhole measurement system and a ground receiving and processing system. The downhole measurement system includes temperature sensors, pressure sensors, data acquisition modules, and wireless signal transmission modules, which are used to collect bottom hole temperature and pressure data in real time and transmit the data to the ground through wireless signals. The ground receiving and processing system is responsible for receiving and processing these data to realize real-time display, storage, and analysis of the data.

[0003] Traditional temperature sensors and pressure sensors are generally fixed in one position, which limits the data collected by the temperature sensors and pressure sensors. For different drillings, there are deviations in the monitoring results, and strong vibrations and high impacts will be generated during the drilling process, which may affect the reliability of the measurement while drilling equipment and cause unstable or distorted measurement data.

[0004] Therefore, it is necessary to provide a deep well drilling while drilling bottom temperature and pressure measurement equipment to solve the problems raised in the above background technology. Summary of the invention

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a deep well drilling while-drilling bottom hole temperature and pressure measurement equipment, comprising a test main pipe, a casing 1, a casing 2, a clamping assembly, a drill pipe and a drill bit, wherein the input end and the output end of the test main pipe are respectively connected to the drill pipe and the drill bit, the casing 1 is slidably sleeved on the inner side of the test main pipe, the casing 2 is slidably sleeved on the outer side of the test main pipe, the two ends of the casing 2 are provided with a clamping assembly, the two ends of the casing 1 are provided with a sealing slip ring 1, the sealing slip ring 1 slides along the test main pipe in a sealed manner, the two ends of the casing 2 are provided with a sealing slip ring 2, the sealing slip ring 2 slides along the test main pipe in a sealed manner, a plurality of temperature sensors 1 and pressure sensors 1 are circumferentially arranged at the upper and lower ends of the inner side of the casing 1, and a plurality of temperature sensors 2 and pressure sensors 2 are circumferentially arranged at the upper and lower ends of the outer side of the casing 2;

[0006] The test main pipe is provided with two slide grooves, and one end of the slide groove is provided with a slide cavity;

[0007] Two clamping blocks are fixedly arranged between the sleeve 1 and the sleeve 2, and sliding rods are arranged on the clamping blocks. The two sliding rods slide along the two sliding cavities respectively, and a sealed hydraulic cavity is formed between one of the sliding cavities and the sliding rod. The hydraulic cavity is connected to an external hydraulic driving device 1 through a hydraulic transmission pipe 1, and a wire tube is fixedly arranged in the other sliding cavity.

[0008] Further, preferably, a wiring channel is opened in the first sleeve and the second sleeve, and the wiring channel penetrates the block and one of the sliding rods and is slidably connected to the wire tube.

[0009] Furthermore, as a preference, at least two storage compartments for storing battery packs and wireless signal transmitting boards are circumferentially opened on the test main pipe, the battery pack is used to provide power to the temperature sensor 1, the temperature sensor 2, the pressure sensor 1 and the pressure sensor 2, and the wireless signal transmitting board is used to receive data information from the temperature sensor 1, the temperature sensor 2, the pressure sensor 1 and the pressure sensor 2 and transmit this information to the ground control system.

[0010] Further, as a preference, the clamping assembly includes a clamping seat, a clamping block and a clamping cava, wherein the clamping seat is fixedly arranged on the sleeve 2, an offset groove is provided on the clamping seat, a plurality of clamping blocks are circularly slidingly arranged in the offset groove, and a clamping cava is rotatably arranged at the output end of the clamping block.

[0011] Further, as a preference, a spherical groove is provided at the output end of the clamping block;

[0012] A spherical rod is fixedly arranged on the clamping slip, and the spherical rod is inserted into the spherical groove and deflected along the spherical groove.

[0013] Further, as a preference, the output end of the holding slip is arc-shaped;

[0014] An elastic buffer pad is fixedly arranged between the clamping slip and the clamping block, and a spacing space exists on a side of the elastic buffer pad close to the spherical rod.

[0015] Further, as a preference, an annular hydraulic chamber is provided on the clamping seat, and the annular hydraulic chamber is connected to an external hydraulic drive device 2 via a hydraulic transmission pipe 2 provided in the wiring channel;

[0016] A hydraulic ring is provided in a sealing and sliding manner in the annular hydraulic cavity, and a push ring is fixedly provided at the output end of the hydraulic ring;

[0017] The clamping block is provided with an inclined surface, and the push ring slides along the inclined surface and pushes the clamping block to slide.

[0018] Compared with the prior art, the present invention provides a deep well drilling while drilling bottom hole temperature and pressure measurement equipment, which has the following beneficial effects:

[0019] The present invention slides a casing pipe 1 inside the test main pipe, slides a casing pipe 2 outside the test main pipe, and slides a plurality of temperature sensors 1 and pressure sensors 1 at both ends of the casing pipe 1, and slides a plurality of temperature sensors 2 and pressure sensors 2 at both ends of the casing pipe 2. The pressure and temperature data inside the test main pipe are monitored by the temperature sensor 1 and the pressure sensor 1, and the pressure and temperature data outside the test main pipe are monitored by the temperature sensor 2 and the pressure sensor 2. The monitored bottom hole temperature data and pressure data are made more accurate through comprehensive analysis of the two temperature data and pressure data. The casing pipe 1 and the casing pipe 2 can slide to change their positions, thereby During the monitoring process, multiple points in the borehole can be monitored, further improving the accuracy of the monitoring data, and it is more applicable to different boreholes. In addition, the present invention is also equipped with a clamping assembly, through which casing one and casing two can be secured on the test main pipe, and a clamping cava is deflected on the clamping block, and an elastic buffer pad is provided between the clamping cava and the clamping block. When strong vibration and impact occur, casing one and casing two can effectively reduce the vibration force under the buffering effect of the elastic buffer pad and the deflection effect of the clamping cava, thereby ensuring that the monitoring instrument will not be affected, further improving the accuracy of the monitoring data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the implementation of connecting the casing 1 and casing 2 with the test main pipe in the present invention;

[0023] Figure 4 It is a schematic diagram of the overall structure of the sleeve 1 and the sleeve 2 in the present invention;

[0024] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the middle part A;

[0025] In the figure: 1. test main pipe; 11. slide groove; 12. slide cavity; 13. wire tube; 2. casing 1; 21. sealing slip ring 1; 22. temperature sensor 1; 23. pressure sensor 1; 3. casing 2; 31. sealing slip ring 2; 32. temperature sensor 2; 33. pressure sensor 2; 4. clamping assembly; 41. clamping seat; 411. annular hydraulic cavity; 42. clamping block; 421. spherical groove; 43. clamping slip; 431. spherical rod; 44. offset groove; 45. elastic buffer pad; 46. hydraulic ring; 461. push ring; 5. drill pipe; 6. clamping block; 61. slide rod; 62. wiring channel; 7. drill bit. DETAILED DESCRIPTION

[0026] See also Figure 1 to Figure 5 In an embodiment of the present invention, a deep well drilling bottom temperature and pressure measurement equipment comprises a test pipe 1, a casing 1 2, a casing 2 3, a clamping assembly 4, a drill rod 5 and a drill bit 7, wherein the input end and the output end of the test pipe 1 are respectively connected to the drill rod 5 and the drill bit 7, the casing 1 2 is slidably sleeved on the inner side of the test pipe 1, the casing 2 3 is slidably sleeved on the outer side of the test pipe 1, the two ends of the casing 2 3 are provided with a clamping assembly 4, the two ends of the casing 1 2 are provided with a sealing slip ring 1 21, the sealing slip ring 1 21 slides along the test pipe 1 in a sealed manner, the two ends of the casing 2 3 are provided with a sealing slip ring 2 31, the sealing slip ring 2 31 slides along the test pipe 1 in a sealed manner, a plurality of temperature sensors 1 22 and a pressure sensor 1 23 are circumferentially arranged at the upper and lower ends of the inner side of the casing 1 2, and a plurality of temperature sensors 2 32 and a pressure sensor 2 33 are circumferentially arranged at the upper and lower ends of the outer side of the casing 2 3;

[0027] The test main pipe 1 is provided with two slide grooves 11, and one end of the slide groove 11 is provided with a slide cavity 12;

[0028] Two clamping blocks 6 are fixedly arranged between the sleeve 1 2 and the sleeve 2 3, and a sliding rod 61 is arranged on the clamping block 6. The two sliding rods 61 slide along the two sliding cavities 12 respectively, and a sealed hydraulic cavity is formed between one of the sliding cavities 12 and the sliding rod 61. The hydraulic cavity is connected to an external hydraulic driving device 1 through a hydraulic transmission pipe 1, and a wire tube 13 is fixedly arranged in the other sliding cavity 12.

[0029] During implementation, the positions of the casing 1 2 and the casing 2 3 are adjusted according to the drilling depth and the drilling environment, so that the monitoring positions of the temperature sensor 1 22, the temperature sensor 2 32, the pressure sensor 1 23 and the pressure sensor 2 33 are more accurate, and then the casing 1 2 and the casing 2 3 after position adjustment are fixed on the test pipe 1 by using the clamping component 4, and then the temperature and pressure data of the bottom of the drilling well are measured by monitoring the temperature and pressure data inside the test pipe 1 and the temperature and pressure data outside the test pipe 1 and combining the two monitored data for comprehensive analysis, and then the data is transmitted to the ground control system through the wireless signal transmitting board. The ground control system further adjusts the drilling data according to the data, thereby ensuring that the drilling work is carried out safely and stably. When vibration or impact occurs during the drilling process, the vibration on the test main pipe 1 is first transmitted to the clamping slip 43, and then transmitted to the casing 1 2 and casing 2 3 through the deflection of the clamping slip 43 and the buffering effect of the elastic buffer pad 45, thereby effectively reducing the impact force on the casing 1 2 and casing 2 3, that is, the temperature sensor 1 22, the temperature sensor 2 32, the pressure sensor 1 23 and the pressure sensor 2 33 are not affected by the vibration, thereby ensuring the stability and accuracy of the monitoring data.

[0030] In this embodiment, Figure 2 and Figure 3 A wiring channel 62 is opened in the sleeve 1 2 and the sleeve 2 3 . The wiring channel 62 penetrates the block 6 and one of the sliding rods 61 and is slidably connected to the wire tube 13 .

[0031] In this embodiment, Figure 2 At least two storage compartments for storing battery packs and wireless signal transmitting boards are circumferentially opened on the test main pipe 1. The battery pack is used to provide power to the temperature sensor 1 22, the temperature sensor 2 32, the pressure sensor 1 23 and the pressure sensor 2 33. The wireless signal transmitting board is used to receive data information from the temperature sensor 1 22, the temperature sensor 2 32, the pressure sensor 1 23 and the pressure sensor 2 33 and transmit the information to the ground control system.

[0032] That is to say, the battery pack, the wireless signal transmitting board, the temperature sensor 1 22, the temperature sensor 2 32, the pressure sensor 1 23 and the pressure sensor 2 33 are electrically connected through the wiring channel 62, that is, the connecting or transmission wires are located in the wiring channel 62, and this connection is not affected by the sliding of the sleeve 1 2 and the sleeve 2 3. In addition, hydraulic pipelines can also be laid in the wiring channel 62 to provide power for the sliding of the push ring 461, that is, the sliding of the clamping block 42, to ensure that the sleeve 1 2 and the sleeve 2 3 can be firmly fixed on the test pipe 1 after sliding.

[0033] In this embodiment, Figure 5 The clamping assembly 4 includes a clamping seat 41, a clamping block 42 and a clamping cava 43, wherein the clamping seat 41 is fixedly arranged on the sleeve 2 3, an offset groove 44 is opened on the clamping seat 41, a plurality of clamping blocks 42 are arranged in a circular sliding manner in the offset groove 44, and a clamping cava 43 is rotatably arranged at the output end of the clamping block 42.

[0034] In this embodiment, Figure 5 The output end of the clamping block 42 is provided with a spherical groove 421;

[0035] A spherical rod 431 is fixedly provided on the clamping slip 43 , and the spherical rod 431 is inserted into the spherical groove 421 and deflected along the spherical groove 421 .

[0036] In this embodiment, Figure 5 , the output end of the holding slip 43 is arc-shaped;

[0037] An elastic buffer pad 45 is fixedly disposed between the clamping slip 43 and the clamping block 42 , and a spacing space exists on a side of the elastic buffer pad 45 close to the spherical rod 431 .

[0038] In this embodiment, Figure 5 The clamping seat 41 is provided with an annular hydraulic chamber 411, and the annular hydraulic chamber 411 is connected to an external hydraulic driving device 2 through a hydraulic transmission pipe 2 provided in the wiring channel 62;

[0039] A hydraulic ring 46 is provided in a sealing and sliding manner in the annular hydraulic cavity 411, and a push ring 461 is fixedly provided at the output end of the hydraulic ring 46;

[0040] The clamping block 42 is provided with an inclined surface, and the push ring 461 slides along the inclined surface and pushes the clamping block 42 to slide.

[0041] During implementation, liquid pressure is delivered to the annular hydraulic chamber 411 through the hydraulic delivery pipe 2, so that the hydraulic ring 46 slides and pushes the push ring 461 to slide, and the clamping block 42 slides under the action of the inclined surface, and then adheres to the test main pipe 1, that is, the multiple clamping blocks 42 contract with each other and clamp on the test main pipe 1, and after clamping, the clamping cava 43 can deflect along the clamping block 42, that is, when vibration or impact occurs, the vibration force transmitted from the test main pipe 1 to the sleeve 1 2 and the sleeve 2 3 can be eliminated through the deflection of the clamping cava 43 and the buffering effect of the elastic buffer pad 45, thereby ensuring that the temperature sensor 1 22, the temperature sensor 2 32, the pressure sensor 1 23 and the pressure sensor 2 33 are not affected by vibration, thereby ensuring the accuracy of data monitoring and preventing distortion of measurement data.

[0042] In summary, when the present invention is implemented, the pressure and temperature data inside the test pipe 1 are monitored by the temperature sensor 1 22 and the pressure sensor 1 23 arranged on the casing 1 2, and the pressure and temperature data outside the test pipe 1 are monitored by the temperature sensor 2 32 and the pressure sensor 2 33 arranged on the casing 2 3, and then the bottom hole temperature data and pressure data are obtained after comprehensive analysis of the two temperature data and pressure data, so that the measured bottom hole temperature and pressure data are more accurate, and the casing 1 2 and the casing 2 3 can slide and change their positions during measurement. The casing 1 2 and the casing 2 3 can be fixed on the test main pipe through the clamping assembly 4, and the clamping cava 43 is deflected on the clamping block 42. When vibration and impact occur, the casing 1 2 and the casing 2 3 can effectively reduce the vibration force under the buffering effect of the elastic buffer pad 45 and the deflection effect of the clamping cava 43, thereby ensuring that the monitoring instrument will not be affected, and further improving the accuracy of the monitoring data.

[0043] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A deep well drilling while drilling bottom hole temperature and pressure measurement equipment, characterized in that: The invention comprises a test main pipe (1), a casing 1 (2), a casing 2 (3), a clamping assembly (4), a drill rod (5) and a drill bit (7), wherein the input end and the output end of the test main pipe (1) are respectively connected to the drill rod (5) and the drill bit (7), the casing 1 (2) is slidably sleeved on the inner side of the test main pipe (1), the casing 2 (3) is slidably sleeved on the outer side of the test main pipe (1), the two ends of the casing 2 (3) are provided with a clamping assembly (4), and the two ends of the casing 1 (2) are provided with sealing Slip ring 1 (21), the sealing slip ring 1 (21) slidingly seals along the test main pipe (1), sealing slip rings 2 (31) are arranged at both ends of the sleeve 2 (3), the sealing slip ring 2 (31) slidingly seals along the test main pipe (1), a plurality of temperature sensors 1 (22) and pressure sensors 1 (23) are arranged circumferentially at the upper and lower ends of the inner side of the sleeve 1 (2), and a plurality of temperature sensors 2 (32) and pressure sensors 2 (33) are arranged circumferentially at the upper and lower ends of the outer side of the sleeve 2 (3); The test main pipe (1) is provided with two slide grooves (11), and one end of the slide groove (11) is provided with a slide cavity (12); Two clamping blocks (6) are fixedly arranged between the sleeve 1 (2) and the sleeve 2 (3), and a sliding rod (61) is arranged on the clamping block (6). The two sliding rods (61) slide along the two sliding cavities (12) respectively, and a sealed hydraulic cavity is formed between one of the sliding cavities (12) and the sliding rod (61), and the hydraulic cavity is connected to an external hydraulic driving device 1 through a hydraulic transmission pipe 1, and a wire tube (13) is fixedly arranged in the other sliding cavity (12); The first sleeve (2) and the second sleeve (3) are provided with a wiring channel (62), the wiring channel (62) penetrates the block (6) and one of the slide bars (61) and is slidably connected to the wire tube (13); The test main pipe (1) is provided with at least two storage compartments for storing battery packs and wireless signal transmitting boards in a circumferential manner, the battery packs are used to provide power to the temperature sensor 1 (22), the temperature sensor 2 (32), the pressure sensor 1 (23) and the pressure sensor 2 (33), and the wireless signal transmitting board is used to receive data information from the temperature sensor 1 (22), the temperature sensor 2 (32), the pressure sensor 1 (23) and the pressure sensor 2 (33) and transmit the data information to the ground control system; The clamping assembly (4) comprises a clamping seat (41), a clamping block (42) and a clamping slip (43), wherein the clamping seat (41) is fixedly arranged on the second sleeve (3), an offset groove (44) is provided on the clamping seat (41), a plurality of clamping blocks (42) are arranged in a circular sliding manner in the offset groove (44), and a clamping slip (43) is rotatably arranged at the output end of the clamping block (42); The output end of the clamping block (42) is provided with a spherical groove (421); A spherical rod (431) is fixedly provided on the clamping slip (43), and the spherical rod (431) is inserted into the spherical groove (421) and deflected along the spherical groove (421); The output end of the clamping slip (43) is arc-shaped; An elastic buffer pad (45) is fixedly arranged between the clamping slip (43) and the clamping block (42), and a spacing space exists on a side of the elastic buffer pad (45) close to the spherical rod (431); An annular hydraulic chamber (411) is provided on the clamping seat (41), and the annular hydraulic chamber (411) is connected to an external hydraulic drive device 2 via a hydraulic transmission pipe 2 arranged in the wiring channel (62); A hydraulic ring (46) is sealingly and slidably disposed in the annular hydraulic cavity (411), and a push ring (461) is fixedly disposed at the output end of the hydraulic ring (46); The clamping block (42) is provided with an inclined surface, and the push ring (461) slides along the inclined surface and pushes the clamping block (42) to slide.

Images