CN117868717B - Hollow oil-gas well monitoring shaft for high-temperature electric pump oil extraction - Google Patents
Hollow oil-gas well monitoring shaft for high-temperature electric pump oil extraction Download PDFInfo
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- CN117868717B CN117868717B CN202410275178.0A CN202410275178A CN117868717B CN 117868717 B CN117868717 B CN 117868717B CN 202410275178 A CN202410275178 A CN 202410275178A CN 117868717 B CN117868717 B CN 117868717B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 143
- 238000000605 extraction Methods 0.000 title abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 292
- 239000012530 fluid Substances 0.000 claims abstract description 110
- 238000005553 drilling Methods 0.000 claims abstract description 104
- 238000007789 sealing Methods 0.000 claims description 47
- 239000007788 liquid Substances 0.000 claims description 43
- 238000011084 recovery Methods 0.000 claims description 10
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- 230000003068 static effect Effects 0.000 description 9
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- 230000005540 biological transmission Effects 0.000 description 2
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Abstract
The invention relates to the technical field of monitoring inside of oil and gas wells, and discloses a hollow oil and gas well monitoring shaft for high-temperature electric pump oil extraction, which comprises a monitoring shaft, wherein the inside of the monitoring shaft is a through hollow channel, an inner cavity is formed in the side wall of the monitoring shaft, a detection box and a circuit board are arranged in the inner cavity, and a detection module is arranged in the detection box; the pressure data of drilling fluid in the oil-gas well is detected by utilizing the detection module in the detection box, the detection module is connected with the circuit board through an electric signal, and the hollow oil-gas well monitoring shaft for high-temperature electric pump oil extraction is provided with a hollow channel in the monitoring shaft, and an inner cavity is arranged in the inner side wall of the monitoring shaft for installing the monitoring disc and the circuit board.
Description
Technical Field
The invention relates to the technical field of monitoring inside oil and gas wells, in particular to a hollow oil and gas well monitoring shaft for high-temperature electric pump oil extraction.
Background
Before electric pump is used for oil extraction, the underground condition of the oil and gas well is required to be obtained, the drilling fluid can be used for balancing the rock lateral pressure of the oil and gas well wall and the formation pressure, blowout and lost circulation are prevented, and therefore, when the drilling fluid is injected into the oil and gas well, the parameters such as the pressure, the flow and the like of the underground drilling fluid are required to be monitored, so that the condition in the oil and gas well is obtained according to the parameters such as the pressure, the flow and the like of the drilling fluid.
The traditional oil gas well drilling fluid pressure and flow working condition monitoring equipment is of a solid structure design, when the underground operation or the tool below is needed, the monitoring equipment needs to be lifted, the process is complex in work flow, time-consuming in operation and high in labor operation cost, meanwhile, the traditional monitoring equipment can only monitor parameters such as the pressure and the flow of the drilling fluid in a single-point single-state mode, the monitoring range of the parameters such as the pressure and the flow of the drilling fluid is small, the monitoring result is single, the accuracy of the monitoring result of the parameters such as the pressure and the flow of the drilling fluid is low, and the analysis of conditions in the oil gas well can be influenced.
Disclosure of Invention
In order to solve the problems that the traditional oil and gas well drilling fluid pressure and flow working condition monitoring equipment cannot simultaneously work towards a downhole operation or a tool below when in use, the process is complex in work flow, time-consuming in operation and high in manual operation cost, meanwhile, the traditional monitoring equipment is small in monitoring range of parameters such as pressure and flow of drilling fluid, the monitoring result is single, and the accuracy of the monitoring result of the parameters such as pressure and flow of the drilling fluid is low, the invention is realized by the following technical scheme: the utility model provides a cavity formula oil gas well monitoring pit shaft for high temperature electric pump oil recovery, includes the monitoring pit shaft, the inside of monitoring pit shaft is the cavity passageway that runs through, and the design of cavity passageway need not to promote the monitoring pit shaft, can go down instrument etc. through cavity passageway to the pit, can reduce work flow, reduces the operating time, reduces the cost of labor, the inside inner chamber that is equipped with of lateral wall of monitoring pit shaft, install detection box and circuit board in the inner chamber, install detection module in the detection box;
And the detection module in the detection box is used for detecting the pressure data of the drilling fluid in the oil-gas well, the detection module is in electrical signal connection with the circuit board, the detection module transmits the detected electrical signal of the pressure data of the drilling fluid to the circuit board, and the circuit board performs conversion analysis processing on the pressure data of the drilling fluid to obtain the flow data of the drilling fluid.
The circuit board acquires pressure data of a plurality of drilling fluids by using detection modules for monitoring different liquid level positions in a shaft, and calculates the flow q of the drilling fluids by using the pressure difference between the liquid levels:
；
；
wherein, For volume flow,/>For mass flow,/>Is the flow coefficient,/>To monitor the cross-sectional area of a hollow passage in a wellbore,/>Is the upstream pressure,/>For the downstream pressure,/>Is the drilling fluid density.
Further, the detection module installed inside the detection box comprises a pressure sensor;
The inner side wall of the monitoring shaft is provided with a plurality of detection ports, a plurality of detection ports are in a group, a plurality of detection ports in the same group are annularly distributed on the same radial surface of the monitoring shaft, and a plurality of groups of detection ports are distributed along the axis of the monitoring shaft;
The inner cavity of the monitoring shaft is rotationally provided with a monitoring disc, the upper surface of the monitoring disc is fixedly provided with a toothed ring, the inner cavity is internally provided with motor equipment, the output end of the motor equipment is provided with a gear meshed with the toothed ring, the detection box is arranged in the monitoring disc, and when the detection box rotates to the position of the detection port, the detection module in the detection box detects the pressure of drilling fluid at the position corresponding to the detection port.
The detection module further comprises a temperature sensor, and the temperature sensor is used for detecting the temperature of the drilling fluid at the position corresponding to the detection port.
Further, a sealing plate is arranged in the detection port in a sealing and sliding manner, the sealing plate is radially and slidably arranged in the detection port, the opening and the closing of the detection port are controlled by the sealing plate, and sealing layers are arranged on the matched side edges of the sealing plate and the detection port and are used for sealing and matching the sealing plate and the detection port;
A detection cavity is formed in the inner annular surface of the monitoring disc, the detection cavity and the detection port are positioned on the same radial surface, when the detection cavity rotates to the position of the detection port, a sealing plate in the detection port slides to the inside of the detection cavity under the pressure action of drilling fluid in a hollow channel of the monitoring shaft, the detection port is opened, at the moment, the drilling fluid enters the detection cavity through the detection port, and the drilling fluid entering the detection cavity is used as a detection sample of a detection module in the detection box;
The bottom surface of the detection cavity is provided with a liquid guide channel, the inner side wall of the monitoring shaft below the detection opening is provided with a through hole, when the detection cavity rotates to the position of the detection opening, the liquid guide channel is communicated with the through hole, and when the liquid guide channel and the through hole are in a dislocation state, the through hole is blocked by the inner side ring surface of the monitoring disc, so that drilling fluid in the hollow channel of the monitoring shaft is prevented from entering the inner cavity;
and detecting the drilling fluid entering the detection cavity by using a detection module in the detection box.
After drilling fluid enters the detection cavity through the detection port, before the sealing plate is not matched with the detection port, the detection module is used for detecting the dynamic pressure and the dynamic temperature of the drilling fluid at the position, then the detection port is closed, the detection cavity is communicated with the hollow channel of the monitoring shaft through the fluid guide channel, the drilling fluid in the detection cavity is in a static state, and the detection module is used for detecting the static pressure and the static temperature of the drilling fluid at the position.
Further, the detection box is radially and slidably arranged in the monitoring disc, a telescopic rod is arranged in the monitoring disc, the telescopic rod is a hydraulic rod, the telescopic end of the telescopic rod is fixedly connected with the detection box, the position of the detection end of the detection module in the detection box is regulated by the telescopic rod, a push rod is fixedly arranged on the surface of the detection box, which is close to one side of the detection cavity, and corresponds to a sealing plate entering the detection cavity, and the sealing plate is pushed to reset by the push rod;
When the detection box moves towards the direction of the detection cavity, the detection end of the detection module stretches into the detection cavity, and the position of the detection end of the detection module in the detection cavity is adjusted by utilizing the movement of the detection box.
Further, a liquid draining block is arranged right above the detection cavity, the liquid draining block is vertically arranged in the detection disc in a sliding mode, a vertical threaded rod is rotatably arranged in the detection disc, the threaded rod is in threaded connection with the liquid draining block, a worm wheel is arranged at the upper end of the threaded rod, the worm wheel is driven to rotate by a worm arranged in the detection disc, the worm is driven to rotate by a motor module, and the liquid draining block is matched with the detection cavity and is used for draining drilling fluid in the detection cavity;
A baffle is arranged in the liquid guide channel in a radial sliding way, and the baffle is used for controlling the opening and closing of the liquid guide channel;
The side surface fixed mounting of baffle has the connecting rod, the surface sliding mounting of connecting rod has the buffer rod, the upper surface of buffer rod and the lower surface of detecting the box all are equipped with the flank of tooth, two simultaneously the meshing has drive gear between the flank of tooth, and the removal frictional resistance between baffle and the monitoring dish is greater than the sliding frictional resistance between buffer rod and the connecting rod.
When the drilling fluid in the hollow channel of the monitoring shaft enters the detection cavity, the fluid guide channel is in a closed state, when the detection box moves towards the direction of the detection cavity, the detection box and the transmission gear cooperate to drive the buffer rod to move, the buffer rod slides relative to the connecting rod, the fluid guide channel is still in the closed state, when the sealing plate approaches to the detection port to be completely closed, the buffer rod drives the baffle to move through the connecting rod, so that the fluid guide channel is in an open state, and accordingly, the drilling fluid in the detection cavity and the drilling fluid of the monitoring shaft are in a communication state.
When the detection box resets, the flowing back piece moves down and enters into the detection chamber, and the flowing back piece can restrict the shrouding to detect the intracavity and remove, and the buffer rod still slides for the connecting rod this moment, and the drain passageway still is in open state, and the flowing back piece can promote the drilling fluid in the detection chamber to flow in the drain passageway to in the cavity passageway of monitoring pit shaft through the through-hole, when the lower surface of flowing back piece approaches the bottom surface of detecting the intracavity portion, the buffer rod can drive the baffle through the connecting rod this moment and remove, makes the drain passageway be in the closed state.
And the drilling fluid sample in the detection cavity is cleaned by the liquid draining block, so that the influence of the existing drilling fluid in the detection cavity on the detection result of the next detection module on the drilling fluid is avoided.
Further, the upper surface of shrouding is provided with the guide block, the guide slot has been seted up to the lower surface of flowing back piece, the guide block with guide slot looks adaptation, when detecting the chamber and rotating to the position corresponding with the shrouding, the shrouding just can slide to the direction of detecting the chamber under the pressure effect of drilling fluid in the cavity passageway of monitoring pit shaft.
Further, the monitoring shaft comprises a lower shaft, a middle shaft and an upper shaft, wherein the middle shaft is in axial sliding connection with the lower shaft, the upper shaft is in axial sliding connection with the middle shaft, and hydraulic cylinders are arranged between the lower shaft and the middle shaft and between the upper shaft and the middle shaft;
the multiple groups of detection ports are respectively arranged in the inner side walls of the lower cylinder, the middle cylinder and the upper cylinder, and monitoring discs are arranged in the inner cavities of the lower cylinder, the middle cylinder and the upper cylinder.
The combined design of the lower cylinder, the middle cylinder and the upper cylinder in the shaft is monitored, the positions of the lower cylinder, the middle cylinder or the upper cylinder can be adjusted, the positions of the detection ports in the drilling fluid in the lower cylinder, the middle cylinder or the upper cylinder can be further adjusted, and meanwhile, the monitoring distances among the detection ports in different groups in the axial direction can be adjusted.
Further, a limit rod is slidably mounted in the side surface of the detection port, a limit hole is formed in the side surface of the sealing plate, and when the limit rod is matched with the limit hole, the sealing plate is matched with the detection port;
The annular surface of the inner side wall of the monitoring shaft, which is close to one side of the inner cavity, is radially and slidably provided with a wedge block, the surface of one side of the wedge block, which is positioned in the inner side wall of the monitoring shaft, is fixedly provided with a push rod, the inner side wall of the monitoring shaft is slidably provided with a connecting plate, the limiting rod is fixedly arranged on the surface of the connecting plate, and a connecting rod is arranged between the connecting plate and the push rod;
and a compression spring is arranged between the connecting plate and the inner side wall of the monitoring shaft.
When the limiting rod is in a matching state with the limiting hole, the sealing plate is in a matching state with the detection hole, the pressure of drilling fluid cannot push the sealing plate to move, when the inner annular surface of the monitoring disc is in contact with the wedge block, the wedge block can be pushed to move, the wedge block drives the connecting rod to move through the push rod, the connecting rod can push the connecting plate to move in a direction away from the sealing plate, the connecting plate drives the limiting rod to move together, so that the limiting rod is separated from the limiting hole, the sealing plate corresponds to the detection cavity at the moment, and the sealing plate slides towards the inner direction of the detection cavity under the pressure action of the drilling fluid.
Compared with the prior art, the invention has the following beneficial effects:
1. this cavity formula oil gas well monitoring pit shaft for high temperature charge pump oil recovery through design hollow channel in the monitoring pit shaft to design inner chamber in the inside wall of monitoring pit shaft and be used for installing monitoring dish and circuit board, can utilize hollow channel to carry out borehole operation or below instrument when utilizing monitoring pit shaft to monitor drilling fluid's pressure, flow parameter, be favorable to reducing workflow and operating time, reduce the manual work cost.
2. This cavity formula oil gas well monitoring pit shaft for high temperature charge pump oil recovery through the combined design of detection box, detection chamber, drain passageway and flowing back piece and shrouding and through-hole in the monitoring dish, can utilize the detection module in the detection box to carry out dynamic pressure, flow detection and static pressure, flow detection to the drilling fluid, simultaneously through rotating the monitoring dish, makes the detection chamber and the cooperation of different detection mouths, can utilize a set of detection box to carry out the multiple spot position to the drilling fluid and detect, is favorable to improving the detection precision of the pressure and the flow of drilling fluid, is convenient for follow-up analysis to the condition in the oil gas well.
3. This cavity formula oil gas well monitoring pit shaft for high temperature charge pump oil recovery, through the combined design of flowing back piece and detection chamber and shrouding, when detecting the chamber and rotate to the position that corresponds with the detection mouth, the drilling fluid sample that needs to detect can enter into the detection chamber voluntarily, and liquid guide channel, baffle and through-hole and detection box, the combined design of flowing back piece and shrouding can be discharged the drilling fluid in the detection chamber after carrying out the multi-state to the drilling fluid, avoid influencing the detection of drilling fluid next time.
Drawings
FIG. 1 is a perspective view of the exterior structure of a monitoring wellbore in accordance with the present invention;
FIG. 2 is a perspective view of the internal structure of a monitoring wellbore according to the present invention;
FIG. 3 is a perspective view of the internal structure of the upper casing in the monitoring wellbore according to the present invention;
FIG. 4 is a partial perspective view of the upper barrel of FIG. 3 in accordance with the present invention;
FIG. 5 is a perspective view of the position matching structure of the detection cavity and the detection port in the upper cylinder of the invention;
FIG. 6 is a front view of the internal structure of the monitor disc in the upper cartridge of the present invention;
FIG. 7 is a schematic view of the structure of FIG. 6A according to the present invention;
FIG. 8 is a schematic view of the structure of FIG. 7B according to the present invention;
FIG. 9 is a perspective view showing the internal structure of the cartridge in the monitor panel according to the present invention;
FIG. 10 is a perspective view of the sealing plate and drain block mating structure of the present invention;
FIG. 11 is a side view of the sealing plate and upper cylinder inner side wall mating structure of the present invention;
Fig. 12 is a top view of the sealing plate and the inner side wall of the upper cylinder.
In the figure: 1. a lower cylinder; 2. a middle cylinder; 3. a cylinder is arranged; 4. a detection port; 41. a sealing plate; 411. a guide block; 42. a through hole; 5. an inner cavity; 6. a monitor disc; 61. a toothed ring; 7. a detection box; 71. a telescopic rod; 72. a push rod; 8. a circuit board; 9. a detection chamber; 91. a liquid guide channel; 10. a liquid discharge block; 101. a threaded rod; 11. a baffle; 111. a connecting rod; 112. a buffer rod; 12. wedge blocks; 121. a push rod; 13. a connecting plate; 131. a limit rod; 14. a connecting rod; 15. and a hydraulic cylinder.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the hollow oil gas well monitoring shaft for high temperature electric pump oil extraction is as follows:
Referring to fig. 1-12, a hollow oil-gas well monitoring wellbore for high temperature electric pump oil extraction comprises a monitoring wellbore, wherein the monitoring wellbore comprises a lower barrel 1, a middle barrel 2 and an upper barrel 3, the middle barrel 2 is axially and slidably connected with the lower barrel 1, the upper barrel 3 is axially and slidably connected with the middle barrel 2, and hydraulic cylinders 15 are respectively arranged between the lower barrel 1 and the middle barrel 2 and between the upper barrel 3 and the middle barrel 2.
The inside of monitoring pit shaft is the cavity passageway that runs through, and cavity passageway's design need not to promote the monitoring pit shaft, can be through cavity passageway to instrument etc. that descends in the pit, can reduce work flow, reduces the operating time, reduces the cost of labor, and the inside inner chamber 5 that is equipped with of lateral wall of monitoring pit shaft installs detection box 7 and circuit board 8 in the inner chamber 5, installs detection module in the detection box 7.
The detection module installed inside the detection box 7 comprises a pressure sensor and a temperature sensor; the inside wall of monitoring pit shaft has seted up a plurality of and has detected mouthful 4, and a plurality of detection mouths 4 are a set of, and a plurality of detection mouths 4 are the annular and distribute at the same radial surface of monitoring pit shaft in the same group, and multiunit detection mouths 4 distribute along the axis of monitoring pit shaft.
The multiple groups of detection ports 4 are respectively arranged in the inner side walls of the lower cylinder 1, the middle cylinder 2 and the upper cylinder 3, and the inner cavities 5 inside the lower cylinder 1, the middle cylinder 2 and the upper cylinder 3 are respectively provided with a monitoring disc 6.
The combined design of the lower cylinder 1, the middle cylinder 2 and the upper cylinder 3 in the shaft is monitored, the positions of the lower cylinder 1, the middle cylinder 2 or the upper cylinder 3 can be adjusted, the positions of the detection ports 4 in the drilling fluid in the lower cylinder 1, the middle cylinder 2 and the upper cylinder 3 can be further adjusted, and meanwhile, the monitoring distances among the detection ports 4 in different groups in the axial direction can be adjusted.
The inside sealed slidable mounting who detects mouth 4 has shrouding 41, and shrouding 41 radial slidable mounting is in detecting mouth 4, utilizes shrouding 41 control to detect opening and shutting of mouth 4, and shrouding 41 all is equipped with the sealing layer with the cooperation side of detecting mouth 4.
The monitoring disc 6 is rotatably installed in the inner cavity 5 of the monitoring shaft, the toothed ring 61 is fixedly installed on the upper surface of the monitoring disc 6, motor equipment is installed in the inner cavity 5, a gear meshed with the toothed ring 61 is installed at the output end of the motor equipment, the detection box 7 is installed in the monitoring disc 6, when the detection box 7 rotates to the position of the detection port 4, the detection module in the detection box 7 detects the pressure of drilling fluid at the position corresponding to the detection port 4, and the temperature sensor is used for detecting the temperature of the drilling fluid at the position corresponding to the detection port 4.
The detection cavity 9 has been seted up in the interior anchor ring of monitoring dish 6, detection cavity 9 is located same radial surface with detecting the mouth 4, when detecting the position of mouth 4 in the cavity 9 rotation, the inside shrouding 41 of detection mouth 4 slides to the inside of detection cavity 9 under the pressure effect of the drilling fluid in the cavity passageway of monitoring pit shaft, detection mouth 4 is opened, drilling fluid can enter into detection cavity 9 through detecting mouth 4 this moment, the drilling fluid that enters into in the detection cavity 9 is as the detection sample of detection module in the detection box 7.
The bottom surface of the detection cavity 9 is provided with a liquid guide channel 91, the inner side wall of the monitoring shaft below the detection port 4 is provided with a through hole 42, when the detection cavity 9 rotates to the position of the detection port 4, the liquid guide channel 91 is communicated with the through hole 42, and when the liquid guide channel 91 and the through hole 42 are in a dislocation state, the through hole 42 is blocked by the inner side ring surface of the monitoring disc 6, so that drilling fluid in a hollow channel of the monitoring shaft is prevented from entering the inner cavity 5; the drilling fluid entering the detection chamber 9 is detected by means of a detection module in the detection cartridge 7.
After drilling fluid enters the detection cavity 9 through the detection port 4, before the sealing plate 41 is not matched with the detection port 4, the dynamic pressure and the dynamic temperature of the drilling fluid at the position are detected by the detection module, then the detection port 4 is closed by the sealing plate 41, the detection cavity 9 is communicated with a hollow channel of a monitoring shaft through the liquid guide channel 91, at the moment, the drilling fluid in the detection cavity 9 is in a static state, and the static pressure and the static temperature of the drilling fluid at the position are detected by the detection module.
The detection box 7 is radially slidably mounted in the detection disc 6, a telescopic rod 71 is mounted in the detection disc 6, the telescopic rod 71 is a hydraulic rod, the telescopic end of the telescopic rod 71 is fixedly connected with the detection box 7, the position of the detection end of the detection module in the detection box 7 is adjusted by using the telescopic rod 71, a push rod 72 is fixedly mounted on the surface of one side, close to the detection cavity 9, of the detection box 7, the push rod 72 corresponds to the sealing plate 41 entering the detection cavity 9, and the push rod 72 is used for pushing the sealing plate 41 to reset.
When the detection box 7 moves towards the detection cavity 9, the detection end of the detection module stretches into the detection cavity 9, and the position of the detection end of the detection module in the detection cavity 9 is adjusted by utilizing the movement of the detection box 7.
The pressure data of the drilling fluid in the oil and gas well is detected by using a detection module in the detection box 7, the detection module is in electrical signal connection with the circuit board 8, the detection module transmits the electrical signal of the detected pressure data of the drilling fluid to the circuit board 8, and the circuit board 8 performs conversion analysis processing on the pressure data of the drilling fluid to obtain flow data of the drilling fluid.
The circuit board 8 obtains pressure data of a plurality of drilling fluids by using detection modules for monitoring different liquid level positions in the shaft, and calculates the flow q of the drilling fluids by using the pressure difference between the liquid levels:
；
；
wherein, For volume flow,/>For mass flow,/>Is the flow coefficient,/>To monitor the cross-sectional area of a hollow passage in a wellbore,/>Is the upstream pressure,/>For the downstream pressure,/>Is the drilling fluid density.
The detection cavity 9 is provided with the flowing back piece 10 directly over, and the upper surface of shrouding 41 is provided with guide block 411, and the guide slot has been seted up to the lower surface of flowing back piece 10, and guide block 411 and guide slot looks adaptation, when detection cavity 9 rotates to the position corresponding with shrouding 41, shrouding 41 just can slide to the direction of detection cavity 9 under the pressure effect of drilling fluid in the cavity passageway of monitoring pit shaft.
The flowing back piece 10 slidable mounting from top to bottom is in monitoring dish 6, and the inside rotation of monitoring dish 6 is installed vertical threaded rod 101, and threaded rod 101 and flowing back piece 10 threaded connection, and worm wheel is installed to the upper end of threaded rod 101, and the worm wheel is rotated by the worm drive of installing inside monitoring dish 6, and the worm is rotated by motor module drive, flowing back piece 10 and detection chamber 9 looks adaptation for the drilling fluid in the discharge detection chamber 9.
A baffle 11 is arranged in the liquid guide channel 91 in a radial sliding way, and the opening and closing of the liquid guide channel 91 are controlled by the baffle 11; the side surface of baffle 11 is fixedly mounted with connecting rod 111, and the surface slidable mounting of connecting rod 111 has buffer rod 112, and the upper surface of buffer rod 112 and the lower surface of detection box 7 all are equipped with the flank of tooth, have drive gear between two flanks of tooth simultaneously, and the frictional resistance that moves between baffle 11 and the monitoring dish 6 is greater than the frictional resistance that slides between buffer rod 112 and the connecting rod 111.
When the drilling fluid in the hollow channel of the monitoring shaft enters the detection cavity 9, the fluid guide channel 91 is in a closed state, when the detection box 7 moves towards the direction of the detection cavity 9, the buffer rod 112 is driven by the detection box 7 and the transmission gear to move, the buffer rod 112 slides relative to the connecting rod 111, the fluid guide channel 91 is still in a closed state, when the sealing plate 41 and the detection port 4 are nearly completely closed, the buffer rod 112 drives the baffle 11 to move through the connecting rod 111, so that the fluid guide channel 91 is in an open state, and correspondingly, the drilling fluid in the detection cavity 9 and the drilling fluid of the monitoring shaft are in a communication state.
When the detection box 7 resets, the liquid draining block 10 moves downwards into the detection cavity 9, the liquid draining block 10 can limit the sealing plate 41 to move into the detection cavity 9, the buffer rod 112 still slides relative to the connecting rod 111 at this time, the liquid guiding channel 91 is still in an open state, the liquid draining block 10 can push drilling liquid in the detection cavity 9 to flow into the liquid guiding channel 91 and drain into a hollow channel of a monitoring shaft through the through hole 42, and when the lower surface of the liquid draining block 10 approaches the bottom surface inside the detection cavity 9, the buffer rod 112 drives the baffle 11 to move through the connecting rod 111 at this time, so that the liquid guiding channel 91 is in a closed state.
The drilling fluid sample in the detection cavity 9 is cleaned by the liquid draining block 10, so that the influence of the existing drilling fluid in the detection cavity 9 on the detection result of the next detection module on the drilling fluid is avoided.
The inside slidable mounting of side surface of detecting mouth 4 has gag lever post 131, and spacing hole has been seted up to the side surface of shrouding 41, and when gag lever post 131 and spacing hole cooperation, shrouding 41 is in the cooperation state with detecting mouth 4.
The annular surface of the inner side wall of the monitoring shaft, which is close to one side of the inner cavity 5, is radially and slidably provided with a wedge block 12, the surface of the wedge block 12, which is positioned on one side of the inner side wall of the monitoring shaft, is fixedly provided with a push rod 121, the inner side wall of the monitoring shaft is slidably provided with a connecting plate 13, a limiting rod 131 is fixedly arranged on the surface of the connecting plate 13, and a connecting rod 14 is arranged between the connecting plate 13 and the push rod 121; a compression spring is arranged between the connecting plate 13 and the inner side wall of the monitoring shaft.
When the limiting rod 131 is in a matched state with the limiting hole, the sealing plate 41 is in a matched state with the detection port 4, the pressure of drilling fluid cannot push the sealing plate 41 to move, when the inner annular surface of the monitoring disc 6 is in contact with the wedge block 12, the wedge block 12 is pushed to move, the wedge block 12 drives the connecting rod 14 to move through the push rod 121, the connecting rod 14 can push the connecting plate 13 to move in a direction away from the sealing plate 41, the connecting plate 13 drives the limiting rod 131 to move together, so that the limiting rod 131 and the limiting hole can be separated, the sealing plate 41 corresponds to the detection cavity 9 at the moment, and the sealing plate 41 slides towards the inner direction of the detection cavity 9 under the pressure action of the drilling fluid.
Hollow oil gas well monitoring shaft working principle for high-temperature electric pump oil extraction:
When the well drilling development is carried out on an oil field, the hollow monitoring shaft is utilized to detect the underground environment before electric pump oil extraction is used, and the conditions of the underground oil and gas field are analyzed by detecting the pressure, flow and temperature change of underground drilling fluid, and the specific operation is as follows:
Firstly, a monitoring shaft is placed in an oil-gas well, then a motor device is used for driving a monitoring disc 6 in an inner cavity 5 of a lower cylinder 1, a middle cylinder 2 and an upper cylinder 3 in the monitoring shaft to rotate, the monitoring disc 6 drives a detection box 7 and a detection cavity 9 to rotate together, when the detection cavity 9 rotates to a position corresponding to a detection port 4 in the inner side wall of the monitoring shaft, the driving of the monitoring disc 6 is stopped, at this time, a guide block 411 on the upper surface of a sealing plate 41 corresponds to a guide groove on the lower surface of a liquid draining block 10, and a sealing plate 41 in the position moves towards the direction inside the detection cavity 9 under the action of drilling hydraulic pressure in a hollow channel of the monitoring shaft.
When shrouding 41 and detection mouth 4 separation, the drilling fluid in the cavity passageway can enter into detection chamber 9 this moment, and the drilling fluid of detection chamber 9 inside is direct through detection mouth 4 and the drilling fluid intercommunication in the cavity passageway this moment, can drive detection box 7 and remove this moment, stretches into detection chamber 9 with the detection end of the detection module in the detection box 7, utilizes pressure sensor and temperature sensor to detect the dynamic pressure and the dynamic temperature of drilling fluid of this position respectively.
The ejector rod 72 is used for pushing the sealing plate 41 to move towards the direction of the detection port 4, so that the sealing plate 41 is matched with the detection port 4 again, the drilling fluid in the detection cavity 9 is communicated with the drilling fluid in the hollow channel through the fluid guide channel 91, at the moment, the static pressure and the static temperature of the drilling fluid at the position are detected by the pressure sensor and the temperature sensor respectively, and after detection, the drilling fluid sample in the detection cavity 9 is discharged into the hollow channel again through the fluid guide channel 91 and the through hole 42 by the liquid discharge block 10.
The detected pressure data and temperature data are transmitted to the circuit board 8 in the form of electric signals, the circuit board 8 is used for processing and analyzing the dynamic pressure data, and the flow of the drilling fluid is calculated according to the dynamic pressure data of the drilling fluid at two different liquid level positions.
When the detection cavity 9 rotates to the position of the next detection port 4, the monitoring disc 6 is driven to rotate continuously, the pressure and the temperature of drilling fluid at the point are detected continuously, the flow of the drilling fluid is calculated and obtained, the drilling fluid is circulated in sequence, a plurality of points of the same liquid level can be monitored by using a group of detection boxes 7, the pressure and the temperature data of the drilling fluid at the plurality of points are monitored, and the situation in an oil-gas well can be analyzed more accurately.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a high temperature is cavity type oil gas well monitoring pit shaft for electric pump oil recovery, includes monitoring pit shaft, its characterized in that: the inside of the monitoring shaft is a through hollow channel, an inner cavity (5) is formed in the side wall of the monitoring shaft, a detection box (7) and a circuit board (8) are installed in the inner cavity (5), and a detection module is installed in the detection box (7);
The method comprises the steps that pressure data of drilling fluid in an oil-gas well are detected by using a detection module in a detection box (7), the detection module is in electrical signal connection with a circuit board (8), the detection module transmits the electrical signal of the detected pressure data of the drilling fluid to the circuit board (8), and the circuit board (8) performs conversion analysis processing on the pressure data of the drilling fluid to obtain flow data of the drilling fluid;
the detection module installed inside the detection box (7) comprises a pressure sensor;
the inner side wall of the monitoring shaft is provided with a plurality of detection ports (4), a plurality of detection ports (4) are in a group, the detection ports (4) in the same group are annularly distributed on the same radial surface of the monitoring shaft, and a plurality of groups of detection ports (4) are distributed along the axis of the monitoring shaft;
A monitoring disc (6) is rotatably installed in an inner cavity (5) of the monitoring shaft, the detection box (7) is installed in the monitoring disc (6), and when the detection box (7) rotates to the position of the detection port (4), a detection module in the detection box (7) detects the pressure of drilling fluid at the position corresponding to the detection port (4);
A sealing plate (41) is arranged in the detection port (4) in a sealing sliding manner, and the sealing plate (41) is arranged in the detection port (4) in a radial sliding manner;
A detection cavity (9) is formed in the inner annular surface of the monitoring disc (6), the detection cavity (9) and the detection port (4) are positioned on the same radial surface, when the detection cavity (9) rotates to the position of the detection port (4), a sealing plate (41) in the detection port (4) slides towards the inside of the detection cavity (9) under the pressure action of drilling fluid in a hollow channel of the monitoring shaft, and the detection port (4) is opened;
A liquid guide channel (91) is formed in the bottom surface of the detection cavity (9), a through hole (42) is formed in the inner side wall of the monitoring shaft below the detection port (4), and when the detection cavity (9) rotates to the position of the detection port (4), the liquid guide channel (91) is communicated with the through hole (42);
drilling fluid entering the detection cavity (9) is detected by a detection module in the detection box (7).
2. The hollow oil and gas well monitoring wellbore for high temperature electric pump oil recovery of claim 1, wherein: the detection box (7) is radially and slidably arranged in the monitoring disc (6), a telescopic rod (71) is arranged in the monitoring disc (6), the telescopic end of the telescopic rod (71) is fixedly connected with the detection box (7), a push rod (72) is fixedly arranged on the surface, close to one side of the detection cavity (9), of the detection box (7), and the push rod (72) corresponds to a sealing plate (41) entering the detection cavity (9);
When the detection box (7) moves towards the detection cavity (9), the detection end of the detection module stretches into the detection cavity (9).
3. The hollow oil and gas well monitoring wellbore for high temperature electric pump oil recovery of claim 2, wherein: a liquid draining block (10) is arranged right above the detection cavity (9), the liquid draining block (10) is arranged in the monitoring disc (6) in a vertical sliding mode, and the liquid draining block (10) is matched with the detection cavity (9);
A baffle (11) is arranged in the liquid guide channel (91) in a radial sliding way, and the baffle (11) is used for controlling the opening and closing of the liquid guide channel (91);
the side surface of baffle (11) fixed mounting has connecting rod (111), the surface sliding mounting of connecting rod (111) has buffer rod (112), the upper surface of buffer rod (112) and the lower surface of detection box (7) all are equipped with the flank of tooth, two simultaneously meshing there is drive gear between the flank of tooth.
4. A hollow oil and gas well monitoring wellbore for high temperature electric pump oil recovery according to claim 3, wherein: the upper surface of shrouding (41) is provided with guide block (411), the guide slot has been seted up to the lower surface of flowing back piece (10), guide block (411) with guide slot looks adaptation.
5. The hollow oil and gas well monitoring wellbore for high temperature electric pump oil recovery according to any one of claims 1-4, wherein: the monitoring shaft comprises a lower shaft (1), a middle shaft (2) and an upper shaft (3), wherein the middle shaft (2) is axially and slidably connected with the lower shaft (1), the upper shaft (3) is axially and slidably connected with the middle shaft (2), and hydraulic cylinders (15) are respectively arranged between the lower shaft (1) and the middle shaft (2) and between the upper shaft (3) and the middle shaft (2);
The multiple groups of detection ports (4) are respectively arranged in the inner side walls of the lower cylinder (1), the middle cylinder (2) and the upper cylinder (3), and monitoring discs (6) are respectively arranged in inner cavities (5) inside the lower cylinder (1), the middle cylinder (2) and the upper cylinder (3).
6. The hollow oil and gas well monitoring wellbore for high temperature electric pump oil recovery of claim 5, wherein: a limiting rod (131) is slidably mounted in the side surface of the detection port (4), a limiting hole is formed in the side surface of the sealing plate (41), and when the limiting rod (131) is matched with the limiting hole, the sealing plate (41) and the detection port (4) are in a matched state;
The annular surface of the inner side wall of the monitoring shaft, which is close to one side of the inner cavity (5), is radially provided with a wedge block (12) in a sliding manner, the surface of the wedge block (12) positioned on one side of the inner side wall of the monitoring shaft is fixedly provided with a push rod (121), the inner side wall of the monitoring shaft is provided with a connecting plate (13) in a sliding manner, the limiting rod (131) is fixedly arranged on the surface of the connecting plate (13), and a connecting rod (14) is arranged between the connecting plate (13) and the push rod (121);
And a compression spring is arranged between the connecting plate (13) and the inner side wall of the monitoring shaft.
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| CN117868717A (en) | 2024-04-12 |
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