CN116378922B

CN116378922B - Drilling pumping system and monitoring method thereof

Info

Publication number: CN116378922B
Application number: CN202310627173.5A
Authority: CN
Inventors: 马强; 简科; 张波
Original assignee: Deyang Kunwei Mechanical And Electrical Equipment Co ltd
Current assignee: Deyang Kunwei Mechanical And Electrical Equipment Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-08-04
Anticipated expiration: 2043-05-31
Also published as: CN116378922A

Abstract

The invention relates to a drilling pumping system and a monitoring method thereof, wherein a diversion pressure control assembly and a flow limiting assembly are arranged at the output end of a pumping main body, and the diversion pressure control assembly regulates and controls parameters of slurry liquid flow flowing into a drilling pipeline in a manner of diverting the slurry liquid flow output in the pumping main body; the flow limiting assembly is used for buffering flow fluctuation of slurry liquid flow pumped by the pumping main body, and a monitoring module capable of monitoring state parameters of the slurry liquid flow and measuring the outline size of a pump head of the pumping main body is further arranged in the pumping main body. The diversion pressure control assembly and the flow limiting assembly can stabilize the hydraulic fluctuation and impulse strength in the pumping main body in a diversion and buffering dual-treatment mode, so that the service lives of the pumping main body and the circulating reflux are prolonged, the abrasion condition of the pumping main body is predicted by utilizing the association curve generated by monitoring data, and the accurate maintenance scheme is conveniently formulated.

Description

Drilling pumping system and monitoring method thereof

Technical Field

The invention relates to the technical field of drilling pumps, in particular to a drilling pumping system and a monitoring method thereof.

Background

The drilling mud pump is one of the indispensable drilling mechanical equipment of the drilling system, and is used for conveying mediums such as mud to the drill rod in the drilling process, and mainly circulating the shaft mud so as to achieve the purposes of carrying drilling cuttings back to the ground surface, cleaning the drilling holes, cooling and lubricating the drill bit and the drilling tool, protecting the hole wall from collapsing, stabilizing the shaft, balancing the formation pressure, helping drilling and the like.

In prior related mud pumping equipment, abrasive solid phase particles contained in the drilling fluid can cause erosive wear to the drilling mud pump. The opening of valves in fluid pumping systems and other various causes of abrupt closure of valves can cause significant impact pressure to create water hammer phenomena, causing cracking of tubing and tubing sockets and damage to downstream equipment. When the drilling mud pump is stopped during use, high pressure is present in the drilling mud pump. Because of the complex internal structure of the drilling mud pump, such high pressures can affect the useful life of the components within the drilling mud pump. Especially when the slurry pump is in fault and stops working and needs to be maintained on site, an operator needs to quickly eliminate the high pressure in the slurry pump to open the slurry pump for maintenance.

The patent document with the publication number of CN113339225B discloses a convenient-to-detach cylinder sleeve and piston structure of a slurry pump, which is characterized by comprising a slurry pump main body, a pull rod, a clamp, a piston rod, a pump head assembly, a pump head connecting bolt, a piston, a cylinder sleeve, a pump head connecting plate, a top pressing plate, a compression stud and a compression nut. The technical scheme that this patent provided can promote the change of the relevant wearing and tearing spare part of slush pump and maintain efficiency effectively, and the operating personnel of being convenient for is to the dismouting of pumping equipment, but this patent can't adjust the effort such as interior pressure of pumping equipment in the course of the work, especially can't monitor the wearing and tearing condition of spare part, only can passively maintain pumping equipment when breaking down.

The patent document with the publication number of CN108590998B discloses a pressure-stabilizing plunger slurry pump, which belongs to the technical field of slurry pumps and comprises a transmission assembly, a plunger, a sealing lubrication assembly and a valve box assembly, wherein the valve box assembly comprises a box body, a liquid inlet and a liquid outlet which are arranged on the side wall of the box body, and a box inner cavity which is arranged in the box body, the right end of the plunger is positioned in the box inner cavity, a liquid inlet valve and a liquid outlet valve are arranged in the box body, the liquid inlet valve is connected with the liquid inlet, and the liquid outlet valve is connected with the liquid outlet; the transmission assembly comprises a transmission assembly supporting box body, a transmission device, a plunger left mounting hole and a plunger left sealing sleeve; the sealing lubrication assembly comprises a metal sealing sleeve, a non-metal fiber sealing piece and a lubrication assembly; the liquid inlet valve is connected with the liquid inlet valve and the liquid outlet valve through a connecting spring. The pressure in the pump body is balanced by arranging the pressure stabilizing plunger, but the pressure stabilizing plunger cannot effectively perform stable regulation and control on the state parameters of the output slurry flow, the output slurry flow still fluctuates, and the slurry flow cannot keep a stable state and directionally flow in the circulation loop. Particularly, the slurry pump cannot effectively monitor and predict the state parameters of the self parameters such as abrasion and the like and the loaded slurry flow in real time, and can only perform maintenance and replacement of parts of pumping equipment when faults occur or the parts are judged by experience, so that the maintenance efficiency and the maintenance effect are poor.

Furthermore, there are differences in one aspect due to understanding to those skilled in the art; on the other hand, as the inventors studied numerous documents and patents while the present invention was made, the text is not limited to details and contents of all that are listed, but it is by no means the present invention does not have these prior art features, the present invention has all the prior art features, and the applicant remains in the background art to which the rights of the related prior art are added.

Disclosure of Invention

The invention aims to provide a drilling pumping system and a monitoring method thereof, which can be used for stably adjusting the state of pumped slurry liquid flow so as to improve the service life of a related pipeline forming circulation reflux, so as to solve the problems that the existing drilling slurry pumping system cannot effectively output pressure-stabilized slurry liquid flow, cannot adjust internal stress and cannot monitor and accurately early warn the abrasion condition of related parts.

The technical scheme adopted by the invention is as follows: a drilling pumping system comprising a pumping body providing directional delivery driving force of a mud solution in a closed-loop fluid flow circuit formed in cooperation with a drilling well, at least a shunt pressure control assembly and a flow limiting assembly being arranged at an output end of a chamber constructed by the pumping body for enabling flow of the mud solution, wherein the shunt pressure control assembly regulates a state parameter of the mud solution flowing into a drilling pipeline in a way that the shunt pressure control assembly can shunt the mud solution outputted in the pumping body; the flow limiting assembly is arranged at the downstream of the flow dividing and controlling assembly in a mode that the flow limiting assembly can buffer flow fluctuation of the slurry liquid flow pumped by the pumping main body, so that the slurry liquid flow can be continuously input into a drilling pipeline in a stable state; the pumping main body is internally provided with a monitoring module which can monitor the state parameters of slurry flow and periodically measure the outline size of the pump head of the pumping main body, so that the working state of the pumping system is monitored in real time, and the processing module utilizes the real-time data acquired by the monitoring module to complete the prediction of the service life and the working state of the pumping main body. The device has the advantages that the state parameters of the slurry flow actually output by the pumping main body can be adjusted by utilizing the diversion and buffering mechanism, so that the flow fluctuation of the slurry flow directionally output by the pumping mode can be effectively restrained, the slurry flow can be continuously input into the drilling pipeline in a state with higher stability, the impact of the slurry flow received by each component is reduced under the condition of ensuring the effective circulating flow of the drilling fluid, the water hammer phenomenon is avoided, the components are effectively protected, and the service life of the components is prolonged. In addition, the multi-parameter acquisition monitoring module is additionally arranged in the circulating pipeline structure, and the construction of the abrasion curve of the specific high-abrasion part can be carried out according to the multi-source data acquired by the monitoring module, so that related operators can accurately maintain or replace the related part according to the trend of the monitoring curve, the service life and the service efficiency of the system are improved, meanwhile, the linkage damage of the part worn by overstrain is avoided, and the passivity of post maintenance is avoided.

According to a preferred embodiment, a plurality of pumping bodies are arranged in parallel, and the output ends of the pumping bodies are converged and communicated through a converging pipeline, so that the pumping bodies for intermittently pumping slurry liquid flow can provide slurry liquid flow which is continuously input to the drilling pipeline, wherein the energized flow of the slurry solution means that the pumping bodies impart directional flow acting force to the slurry solution through a pumping process; the flow dividing pressure control assembly and the flow limiting assembly are arranged in the converging pipeline. The device has the advantages that the flow dividing and controlling assembly and the flow limiting assembly are arranged to perform double adjustment on the pumped slurry liquid flow, and the flow rate, the hydraulic pressure, the flow speed and the like of the liquid flow are respectively subjected to disturbance adjustment, so that the pumped over-pressure, over-flow or low-pressure slurry liquid flow can flow into a drilling pipeline in a stable state finally.

According to a preferred embodiment, the split-flow pressure control assembly comprises a pressure control valve body, a conducting valve core and a pressure control elastic limiting piece, wherein the conducting valve core is inserted into a penetrating flow guide channel in the pressure control valve body in a mode that the axis of the conducting valve core is coincident with the axis of the pressure control valve body, the pressure control elastic limiting piece can limit the initial working position of the conducting valve core in the pressure control valve body, and the conducting valve core can axially translate under the pushing of slurry liquid flow flowing into the flow guide channel; the side wall of the pressure control valve body, which is shielded by the conducting valve core, is provided with a diversion hole, and the diversion hole can be communicated with the diversion channel when the conducting valve core is pushed by the slurry liquid flow which flows directionally to translate, so that the slurry liquid flow flowing into the diversion channel defined by the pressure control valve body is diverted, and the flow rate of the slurry liquid flow passing through the conducting valve core is reduced.

According to a preferred embodiment, an inner tube capable of separating a lumen is inserted into the flow-limiting tube body of the flow-limiting assembly, so that the lumen of the flow-limiting tube body is separated into a plurality of parallel pipelines, a flow-retarding piece and a flow-dividing piece are respectively arranged in a flow passage defined by the lumen of the inner tube and a flow passage defined by a clearance space between the flow-retarding piece and the flow-dividing piece, wherein the flow-retarding piece and the flow-dividing piece are in transmission connection through a rotating shaft penetrating through the inner tube, so that the flow-retarding piece and the flow-dividing piece can synchronously deflect in the inner tube and the clearance space respectively, the passable amount of slurry liquid flow in the inner tube and the clearance space is synchronously changed in a linkage mode, and the passable amount of slurry liquid flowing into the flow-limiting assembly is inversely proportional to the passable amount of the clearance space, so that the slurry liquid flow flowing into the flow-limiting assembly is buffered.

According to a preferred embodiment, the input end of the pumping body is also connected with a pretreatment assembly capable of preparing and mixing the slurry solution; the input end of the pretreatment component is communicated with the circulation treatment component which carries out slurry filtering treatment on the slurry solution which is discharged from the drilling and carries rock debris; the recycling assembly is capable of providing recyclable slurry to the pre-treatment assembly by filtration.

According to a preferred embodiment, the pretreatment assembly comprises a mixing pipeline, a confluence chamber and an inclined defoaming pipeline, wherein the mixing pipeline is used for communicating the circulation treatment assembly with the confluence chamber in a mode of constructing a plurality of spiral coils communicated in parallel, and a charging auxiliary pipe of the mixing pipeline can be used for adding component substances into slurry which is conveyed by a main pipe body and is subjected to slurry filtration treatment; one end of the converging chamber, which is far away from the mixing pipeline, is connected with the inclined bubble removal pipeline which can remove bubbles from the mixed slurry solution.

According to a preferred embodiment, the recycling module is provided with a transfer mechanism which can continuously transfer impurities under the constructed inclined filter element in a manner that the recycling module can continuously perform the filtering process.

The technical scheme adopted by the invention also provides a monitoring method of the drilling pumping system, wherein a monitoring module capable of monitoring the state parameters of slurry liquid flow and collecting the abrasion loss of parts of the pumping main body is arranged in the pumping main body of the drilling pumping system, and the monitoring method comprises the following steps: the monitoring module is used for collecting dynamic parameters of slurry liquid flow output by the pumping main body, and scanning to obtain three-dimensional outline dimension data of a pump head of the pumping main body in a continuous working process; generating a correlation curve representing the association of the abrasion condition of the pump head and the dynamic parameters of the slurry liquid flow by utilizing the dynamic parameters of multiple groups of slurry liquid flows acquired by the monitoring module and the size data of the pump head; and correcting the association curve by utilizing real-time data collected by periodic operation of the monitoring module, so that the abrasion condition of the pump head is predicted by the corrected association curve, and a maintenance or replacement treatment scheme of the pumping main body is preset by utilizing the predicted data.

According to a preferred embodiment, the monitoring module is further capable of collecting an own parameter of the slurry solution formulated by the pre-treatment assembly, such that the treatment module generates a correlation curve between the own parameter of the slurry solution and the amount of wear.

According to a preferred embodiment, when the real-time monitoring data collected by the monitoring module deviate from the predicted data, the processing module corrects the correlation curve by using the real-time monitoring data, and controls the monitoring module to accelerate the update of the correlation curve in a manner of shortening the collection period so as to correct the predicted data.

The beneficial effects of the invention are as follows:

according to the pumping main body, the flow dividing and controlling assembly and the flow limiting assembly are arranged in the pumping main body, so that the state parameters of the slurry flow actually output by the pumping main body can be effectively regulated, the fluctuation slurry flow output by the pumping mode is avoided, the pipeline can be impacted, the hydraulic fluctuation and the impact strength in the pumping main body can be stabilized through the double treatment of flow dividing and buffering, and the service life of the pumping main body and the circulating reflux is prolonged.

The monitoring module and the processing module can collect the abrasion condition of the pumping main body and the parameters of slurry flow, and the data are utilized to generate the association curve, so that the working state and the abrasion condition of the pumping main body are predicted according to the association curve, and the accurate maintenance scheme can be formulated according to the prediction result, so that the maintenance effectiveness is improved. The method and the device can also correct the curve according to the real-time data and collect and adjust the curve according to abnormal fluctuation of the real-time data, so that an accurate characterization curve under the condition that variables exist is obtained.

The utility model provides a through will carry out filtration, separation extraction's of backward flow mud straining pulp handle and through accomplish the joining in marriage thick liquid processing that the material added in step in the directional transportation in circulation pumping return circuit and realize highly integrating to mud system to carry out multi-functional integrated design with single pumping structure, thereby reduce required equipment quantity of complete technology and equipment space and occupy, thereby make whole circulation mud pumping system can promote work efficiency under simplifying the circumstances of structure in step, and then the suitability of equipment multiple scenario and complex environment of being convenient for, so that equipment system can be at the construction and the effective work of the working environment that gets worse day by day.

Drawings

FIG. 1 is a schematic diagram of a preferred well pumping system in accordance with the present invention;

FIG. 2 is a schematic illustration of the configuration of a one-way baffle of a preferred drilling pumping system in accordance with the present invention;

FIG. 3 is a schematic illustration of another unidirectional flow guide of a preferred drilling pumping system in accordance with the present invention;

FIG. 4 is a schematic illustration of the configuration of the manifold of a preferred drilling pumping system in accordance with the present invention;

FIG. 5 is a top view of the inner tube of a preferred well pumping system in accordance with the present invention;

FIG. 6 is a schematic illustration of the transfer mechanism of a preferred well pumping system in accordance with the present invention;

FIG. 7 is a schematic cross-sectional view of a compounding line of a preferred well pumping system in accordance with the present invention;

figure 8 is a schematic diagram of the modular connections of a preferred well pumping system in accordance with the present invention.

List of reference numerals

1: a pumping body; 2: a split flow control pressure assembly; 3: a pre-processing assembly; 4: a cyclical processing assembly; 5: a flow restricting assembly; 6: a monitoring module; 7: a processing module; 11: a pump body; 12: a pump head; 13: a transmission mechanism; 14: a driving mechanism; 15: a unidirectional flow guide; 16: a confluence pipeline; 111: an opening; 112: an input pipeline; 113: an output line; 151: a valve sleeve; 152: a stop block; 153: a valve stopper; 154: a positioning piece; 21: a pressure control valve body; 22: the valve core is conducted; 23: a pressure-control elastic limiting piece; 24: a pressure release regulator; 25: an adjusting rod; 26: a return line; 211: a diversion aperture; 221: a valve core through hole; 31: a mixing pipeline; 32: a confluence chamber; 33: a bubble removing pipeline is obliquely arranged; 311: a main pipe body; 312: a charging auxiliary pipe; 41: a circulating collection pool; 42: a circulation input pipeline; 43: a filter; 44: a transfer mechanism; 45: a sundry collecting tank; 51: a flow restriction pipe; 52: a shunt; 53: a flow retarding piece; 54: a reverse flow member; 55: a rebound reset piece; 56: an inner tube; 61: a first acquisition unit; 62: a three-dimensional profile scanning unit; 63: and a third acquisition unit.

Description of the embodiments

The following detailed description refers to the accompanying drawings.

Examples

The application provides a drilling pumping system comprising a pumping body 1 capable of providing a continuous driving force for a drilling fluid, a shunt pressure control assembly 2, a pre-treatment assembly 3 and a circulation treatment assembly 4, a flow restriction assembly 5, a monitoring module 6 and a treatment module 7.

According to one embodiment shown in fig. 1-8, the output end of the pumping body 1 communicates with the axial upper end of a drilling pipe extending into the well, so that the proportioned slurry solution is directed into the drilling pipe and the drill bit in a pressure driven manner to complete the cleaning and cooling of the drill bit. In addition, the mud solution that can be used to enter the drill bit in the interstitial space between the well and the drilling line carries the upward flow of cuttings. The opening of the well is connected with the circulation processing assembly 4, so that the mud solution carrying rock debris can be recovered and filtered by the circulation processing assembly 4 after being discharged from the well, and the cleaned mud solution is conveyed to the pretreatment assembly 3 for secondary preparation. The output of the pre-treatment assembly 3 is connected to the input of the pumping body 1 so that the pumping system can form a closed loop slurry solution pumping system with the drilling structure. A fluid-dividing pressure assembly 2 is also installed in the pumping body 1. The split-flow control assembly 2 is capable of regulating the hydraulic pressure of the slurry flow pumped by the pumping body 1 in a split manner so that the slurry flow can flow into the well at a set hydraulic pressure. A flow restriction assembly 5 is also provided within the pumping body 1. The flow restrictor assembly 5 is capable of adjusting the flow rate of the fluid stream in a buffered manner so that the slurry stream maintains a relatively steady flow rate, thereby allowing the directionally flowing slurry stream to provide a stress-preserving support or fill to the well.

Preferably, the pumping body 1 comprises a pump body 11, a pump head 12, a transmission mechanism 13, a driving mechanism 14 and a unidirectional flow guide 15. A pump head 12 is detachably mounted in the pump body 11. And one end of the pump head 12 is in transmission connection with the driving mechanism 14 through a transmission mechanism 13 which is partially arranged outside a cavity defined by the pump body 11, so that the transmission mechanism 13 controls the pump head 12 to perform directional reciprocating motion in the pump body 11 according to the motion output by the driving mechanism 14, and the pump head 12 can controllably reciprocate in a guide conveying space defined by the pump body 11 under the driving of the transmission mechanism 13 so as to change the volume of the guide conveying space, and the pump head 12 can finish the sucking and pumping actions of liquid flow such as slurry in the pump body 11. Preferably, the inside of the pump body 11 and the end of the pump head 12 are respectively provided with a double-layer ceramic layer body capable of reducing abrasion, so that the friction generated by the relative movement of the two is the friction between the ceramic layers body, so as to reduce the abrasion of the pumping main body 1 by the slurry solution with granularity. Preferably, the guide delivery space defined by the pumping body 1 is provided with at least two openings 111 for suction and pumping of the slurry flow, wherein the two openings 111 may be arranged in a symmetrical distribution on the side wall of the pump body 11, so that the slurry flow in the guide delivery space defined by the pump body 11 can be unidirectionally delivered under the directional reciprocating translational movement of the pump head 12, and a directional flow driving force is imparted according to the movement of the pump head 12. Preferably, the unidirectional flow guide 15 is disposed in the opening 111 such that the open and closed states of the two openings 111 are relatedly changed with the movement of the pump head 12 in the pump body 11, and the open and closed states of the two openings 111 are different from each other, that is, when the opening 111 of the suction end of the guide delivery space is opened, the opening 111 of the pump outlet is in a closed state such that the slurry flow continuously flows into the guide delivery space when the pump head 12 performs the pulling-out movement to increase the volume of the guide delivery space defined by it and the pump body 11 together. It is further preferred that when the opening 111 of the suction end of the lead-in conveying space is closed, the opening of the pump outlet is in an open state, so that the slurry flow in the lead-in conveying space flows out at the opening of the pump outlet in case of a directional translation of the pump head 12 to reduce the volume of the lead-in conveying space, and that the flowing slurry flow can be given a driving force and a hydraulic pressure under the movement of the pump head 12, so that the slurry flow can be conveyed through the drill pipe to the drill bit space for drilling operations in a specific formation with specific state parameters.

Preferably, the transmission 13 comprises a sleeve having a partially perforated structure to achieve dynamic balance during operation of the crankshaft system, to reduce eccentric mass, and to balance or reduce unbalanced inertial forces generated thereby. Preferably, the crankshaft bears shearing force of five connecting rods with 144-degree phase difference on the crankshaft, counter force of a main bearing seat, dead weight, inertial force of eccentric mass and counter force of bearing seats at two ends of the crankshaft.

Preferably, the unidirectional guide 15 is capable of interlocking with the directional reciprocal translation of the pump head 12 in the pump body 11, so as to achieve the directional delivery and the dynamic loading of the slurry flow by the pumping body 1. Preferably, two symmetrically disposed openings 111 of the pump body 11 are connected with an inlet line 112 and an outlet line 113, respectively. It is further preferred that the inlet line 112 and the outlet line 113 are detachably mounted on the opening 111, and that the lumen defined by both are controlled and regulated by the unidirectional flow guide 15 to enable the two to drive the slurry solution to flow directionally under the movement of the pump head 12, so as to deliver the drilling fluid represented by the slurry solution to the location of the drill bit. Preferably, the input pipe 112 and the output pipe 113 are respectively provided with one-way flow guide members 15 having opposite opening and closing structures, so that the one-way flow guide members 15 in the input pipe 112 limit the directional suction of the slurry solution, and the one-way flow guide members 15 in the output pipe 113 limit the directional pumping of the slurry solution. As shown in fig. 1, 2 and 3, the one-way baffle 15 includes a valve sleeve 151, a stopper 152, a valve stopper 153, and a positioning member 154. Specifically, a through passage is formed in the valve housing 151 that substantially mates with the stop 152 such that the stop 152 can translate within the valve housing 151 to change its relative position within the valve housing 151 such that the stop 152 can adjustably block the through passage defined by the valve housing 151 to close the conduit passage. Preferably, a valve stopper 153 is connected to one side of the stopper 152. The valve stop 153 can define an initial position of the stop 152 in the valve housing 151. Preferably, the end of the valve stop 153 remote from the stop 152 is defined in its installed position in the valve housing 151 by a positioning member 154 removably mounted in the valve housing 151. Preferably, the positioning member 154 includes at least two rotary pipelines capable of defining a part of the lumen of the valve sleeve 151 into a double spiral shape, so that slurry solution flowing in a directional manner through the lumen defined by the valve sleeve 151 can change in flowing state in the spiral double-pipe section, the distribution of components is changed due to disturbance acting force of the solution, and slurry solution which may be settled or partially unevenly distributed in the directional flowing process can be mixed in secondary component in the rotary flowing process, thereby improving component uniformity and performance of the mixed slurry, and enabling the slurry solution to serve as drilling fluid to more effectively protect the drilling pipeline and cool the drill bit, and keeping the drill bit in a continuous and effective drilling state.

Preferably, five parallel pumping bodies 1 are communicated with the same drilling pipeline through a confluence pipeline 16, so that a plurality of pumping bodies 1 with phase differences can continuously provide a conveying driving force with adjustable size for the slurry solution through the overlapping mode of working states, and the slurry solution can be continuously input into the drilling pipeline. Preferably, the transmission mechanism 13 of the pumping main body 1 is coaxially arranged in a phase difference manner, and a displacement difference exists in transmission rotation, so that the real-time working paths are different, and the positions of the five pump heads 12 at the same time point are different, so that the different pump heads 12 can output slurry liquid flows to the drilling pipeline in a time difference manner, and the drilling pipeline can continuously and uninterruptedly acquire the slurry liquid flows. According to the pump body 1 with the phase difference and the parallel connection, the slurry flow is conveyed in multiple stages, and particularly, the pump body 1 is provided with multiple dynamic diversion and dynamic buffering structures in an upstream and downstream passage, so that pressure release is completed through buffering and diversion treatment aiming at an overpressure state, the stability of the hydraulic pressure of the pumped liquid flow is improved, the liquid flow parameters are kept in a substantially balanced state, and damage to spare parts is reduced. In addition, the pumping structure can adjust the pumping strength according to the actual flow state parameters of the slurry liquid flow when the slurry liquid flow with different properties is pumped, so that the slurry liquid flow with different viscosity and unit mass can be conveyed at the same pressure in the pumping process, and stable environment and pressure in a drilling channel can be maintained.

Preferably, a split-flow pressure module 2 is also provided in the confluence line 16. The guide conveying space defined by the pump body 11 is communicated with the diversion pressure control assembly 2 capable of adjusting the hydraulic pressure of the slurry flow, so that the diversion pressure control assembly 2 can adjust the state parameters (flow, hydraulic pressure and the like) of the slurry flow. The flow-dividing and pressure-releasing assembly 2 can carry out residual pressure backflow release on the pumped slurry liquid flow, namely, by arranging a flow-dividing fork which is automatically adjusted according to the liquid flow pressure so as to carry out flow dividing and pressure release on the liquid flow with overlarge pressure, thereby reducing the real-time pressure of the pumped liquid flow in a drilling channel, improving the protection of the liquid flow on the environment of the underground channel and reducing the abrasion on a drilling pipeline.

As shown in fig. 4, the split-flow control pressure assembly 2 includes a pressure control valve body 21, a conducting valve core 22 and a pressure control elastic limiting member 23, wherein a through flow guide channel is formed on the pressure control valve body 21, and a special-shaped profile matched with a frustum-shaped end of the conducting valve core 22 is arranged in the middle section of the flow guide channel, so that the conducting valve core 22 can limit the flow through blocking the flow guide channel. Preferably, a valve core through hole 221 which coincides with the axis of the valve core 22 and allows the slurry solution to pass through is formed in the valve core. The spool through hole 221 can define the flow rate of the slurry solution actually delivered. Preferably, a diversion hole 211 capable of diverting the slurry flow flowing into the diversion channel is formed on the side wall of the pressure control valve body 21 corresponding to the profile of the special-shaped channel. Preferably, under the condition that the pressure of the slurry flow is too high, at least part of the slurry flow can push the conducting valve core 22 to translate in the diversion channel, and the diversion hole 211 blocked by the conducting valve core 22 is jacked up, so that at least part of the solution of the high-pressure flow flows out of the diversion hole 211, pressure release and diversion of the slurry flow are completed, and the state parameters of the slurry flow flowing downstream through the conducting valve core 22 are adjustable. Preferably, one end of the conducting valve core 22 far away from the special-shaped profile of the pressure control valve body 21, that is, one end of the conducting valve core 22 far away from the frustum profile of the conducting valve core is connected with a pressure control elastic limiting piece 23, so that the pressure control elastic limiting piece 23 can limit the initial position of the conducting valve core 22, and therefore the slurry solution flowing through the flow dividing and controlling assembly 2 directly passes through the valve core through hole 221 of the conducting valve core 22 under the condition of no overpressure and overcurrent. When the slurry solution is in an overpressure state, the flow can push the conducting valve core 22 to translate in the pressure control valve body 21 so as to expose the diversion hole 211, thereby diverting the slurry flow.

Preferably, the pressure control valve body 21 is further provided with a pressure release regulator 24 partially inserted into a side wall of the valve body. The pressure release regulator 24 has a double-layered ring structure with end surfaces connected so that it can translate in the axial direction of the pressure control valve body 21, thereby defining the actual conduction cross-section size of the diversion hole 211, and thus completing the regulation of the diversion size. Preferably, the pressure release regulator 24 can achieve diversion of a greater amount of slurry flow by increasing the actual allowable passage of the diversion hole 211 in the event that the hydraulic pressure of the slurry flow is too high, thereby effectively reducing the actual flow rate and velocity through the spool through hole 221, and the slurry flow flowing through the spool through hole 221 can be at a relatively stable velocity, flow rate and hydraulic pressure. Preferably, the conducting valve core 22 is connected with an adjusting rod 25 penetrating through the pressure control valve body 21, so that an operator can manually adjust the position of the conducting valve core 22 in the pressure control valve body 21, and the internal pressure of the pump assembly can be released through the split flow pressure control assembly 2 to protect parts when the maintenance of the pump assembly or the replacement of worn parts are required.

Preferably, the pressure control valve body 21 is mounted at least at the output end of the pump body 11, and may be synchronously mounted at the input end of the pump body 11, so as to define the threshold value of the input and output hydraulic pressures. Preferably, the diversion hole 211 re-diverts the diverted slurry solution thereof to the receiving chamber of the pre-treatment assembly 3 through the return line 26, thereby adjusting the flow rate, flow rate and hydraulic pressure of the slurry solution actually output from the pumping body 1. The pre-treatment assembly 3 is preferably able to adjust the caliber of its output according to the size of the flow split by the return line 26, so that the pre-treatment assembly 3 can also define the unit output by adjusting the output caliber in case of proportioning out a slurry solution with a specified composition ratio. The arrangement of the flow dividing and controlling assembly 2 can effectively limit the actual liquid flow pressure and the liquid flow of the pumping main body 1 input into the drilling pipeline, so that the situation that the excessive pressure slurry solution causes acting force exceeding a threshold value to the drilling pipeline, the drill bit and the drilling well is avoided, and the service life of relevant parts is prevented from being obviously shortened due to the excessive pressure state. Preferably, the monitoring module 6 is mounted on both the input end of the pressure control valve body 21 and the output end of the conducting valve core 22. The monitoring module 6 monitors the flow before and after adjustment to analyze the stability of the directional flow of the slurry flow. Preferably, the output end of the diversion hole 211 is further provided with a monitoring module 6 capable of monitoring parameters of slurry liquid flow output by the diversion hole, so that the monitoring module 6 can assist an operator to intuitively obtain actual flow of the diversion hole 211 under different working conditions. For example, when the pumping body 1 is disassembled by releasing pressure, the pressure inside the pipeline and the chamber is mainly provided by the slurry liquid flow which is always present, and when disassembly maintenance or component replacement is required, the pipeline and the chamber are usually released, so that the pumping body 1 is convenient to disassemble and replace components serving as wear parts in an emptying state.

Preferably, a circulation treatment assembly 4 capable of performing a secondary circulation recovery treatment of the mud solution carrying the cuttings discharged from the well and a pre-treatment assembly 3 capable of adjusting the proportion of the components of the mud solution to form drilling fluids having different characteristics are also provided upstream of the pumping body 1. The pre-treatment assembly 3 is capable of receiving the recovered mud and the over-pressurized return mud solution to provide drilling fluid with specific properties to the downhole equipment by adding specific components to the mud solution and adjusting the ratio between the components. Preferably, the pretreatment assembly 3 can also carry out exhaust treatment on the slurry solution in the slurry mixing treatment process after slurry preparation so as to avoid slurry bubbles corroding a drilling tool, reduce the discharge capacity of a slurry pump and reduce the efficiency of a centrifugal pump. Preferably, the circulation treatment assembly 4 is capable of separating, filtering and cleaning the cuttings-carrying and heat-absorbing mud solution discharged from the well. The components of the pre-treatment assembly 3 are proportioned and mixed so that the fluid stream ultimately pumped by the system to the well is mud having specific properties to complete the mud filtration and conditioning process during the circulation delivery process. Specifically, the high integration of the slurry system is realized through the filtration of the reflux slurry, the slurry treatment of separation and extraction and the slurry preparation treatment of synchronously completing the material addition in the directional conveying process in the circulating pumping loop, so that the single pumping structure is subjected to multifunctional integrated design, the equipment quantity and the equipment space occupation required by the complete process are reduced, the working efficiency of the whole circulating slurry pumping system can be synchronously improved under the condition of simplifying the structure, and the applicability of multiple scenes and complex environments of the equipment is further facilitated, so that the equipment system can be built and effectively work in increasingly severe working environments.

As shown in fig. 1 and 7, the pre-treatment assembly 3 comprises a mixing line 31, a converging chamber 32 and an inclined de-bubbling line 33. Specifically, the input end of the mixing pipeline 31 is respectively communicated with the circulation processing assembly 4 and the component adding port, so that the main pipe body 311 of the mixing pipeline 31 with the multi-spiral pipe coiling structure is spliced in a manner of being communicated with the pipe cavity of the feeding auxiliary pipe 312 with the pipe diameter decreasing along the flow direction, and the component materials in the feeding auxiliary pipe 312 are forced to accelerate into the main pipe body 311 along with the gradual reduction of the pipe diameter of the section of the feeding auxiliary pipe 312, so that the primary mixing of the components is realized. The provision of the helical tube body allows for an extended path of movement, thereby allowing for efficient mixing of the components in a sufficiently long pipeline. Preferably, a stirring mechanism is provided in the converging chamber 32 so that the slurry solution converging into the converging chamber 32 can accomplish secondary mixing of the components and distribution adjustment of the components. Preferably, the converging chamber 32 is also in communication with the output of the return line 26 for recovering a portion of the return solution from which the overpressure slurry flow is diverted. Preferably, the output end of the confluence chamber 32 is communicated with the low side pipe orifice of the inclined bubble removal pipe 33, and the level of the high side pipe orifice of the inclined bubble removal pipe 33 is higher than the top surface of the confluence chamber 32, so that the inclined bubble removal pipe 33 can remove bubbles possibly mixed in the slurry solution in a mode of ultrasonic vibration and high-frequency mechanical vibration in the process of directionally conveying the slurry solution with the completed proportioning, and exhaust is carried out through an air permeable window arranged at the high side pipe orifice, thereby improving the purity and the effective volume of the slurry solution.

Preferably, the pre-treatment assembly 3 is capable of ingredient mixing of the mud to be pumped to form a mixed mud slurry (drilling fluid) having specific properties and specific ingredients. The circulation treatment assembly 4 is capable of performing a secondary recovery treatment of mud discharged from the drilling space. Specifically, the circulation treatment assembly 4 can separate, filter and precipitate the slurry flow with the rock debris, which is returned from the annulus, so as to obtain the slurry flow with proper specific gravity and viscosity, and the recovered slurry flow can complete the addition and mixing of specific components in the pretreatment assembly 3, so that the slurry flow after pretreatment and mixing can form the drilling fluid meeting the drilling requirements. Preferably, the drilling fluid represented by the slurry fluid flow is adjusted according to parameters such as components and the like according to the actual drilling requirements and the actual working conditions of the drilling equipment components, so that the drilling fluid with different performance parameters is prepared according to the requirements. Further preferably, the change in the formulation of the drilling fluid may be the specific gravity of the mud, the viscosity, and the ratio of other components in the drilling fluid.

Preferably, the circulation treatment assembly 4 may comprise a plurality of treatment tanks which are sequentially communicated so that the slurry solution discharged with the cuttings by the staged filtration and/or staged precipitation of the treatment tanks to complete the cooling and pressure maintaining work of the drill bit can be subjected to solution composition proportioning again by the pretreatment assembly 3 by recycling, filtering and cleaning the treated slurry solution, and the slurry solution having the specific performance parameters after completing proportioning is again delivered into the downhole space. Specifically, the slurry solution is returned to the grit chamber through a vibrating screen. The mud solution in the grit chamber overflows to the degassing tank after sedimentation to remove large-particle rock debris, the degassing tank mud is discharged to the desanding tank after being treated by the degassing device, the desanding tank mud is discharged to the desilting tank after being treated by the desanding device, the mud solution in the desilting tank is discharged to the cleaning tank after being treated by the desilting device, the cleaning tank mud flows back to the in-use mud tank, and the mixed mud solution with components in the mud tank enters the high-pressure plunger pump to return to the wellhead after being pressurized by the filling pump, so that the closed drilling circulation is completed. It is further preferred that the circulation treatment module 4 may also be a single chamber filtration structure, thereby simplifying the volume of the part of the apparatus, enabling the entire drilling mud pumping system to be integrated to reduce the volume, facilitating the transportation of the apparatus and the installation and operation of complex working environments, and especially reducing the installation difficulty of the entire system by the integrated association of the components and the stacked connection of the module modules in case of poor available environmental conditions.

Preferably, in another embodiment, the recycling assembly 4 includes a recycling reservoir 41, a recycling input line 42, a filter 43, a transfer mechanism 44, and a debris collection reservoir 45. Preferably, the circulation tank 41 of the circulation treatment assembly 4 is connected to the drilling opening by a circulation inlet line 42, so that the upward-ejected mud solution carrying cuttings can be re-collected into the circulation tank 41 via the circulation inlet line 42. Preferably, a filter 43 in an inclined state is provided in the tank chamber of the circulation tank 41. The filter element 43 is capable of separating and filtering large volumes of sediment and cuttings from the discharged slurry solution, and the separated impurities and cuttings are capable of sliding down an inclined plane defined by the filter element 43 to be received by a transfer mechanism 44 staggered from the filter element 43 and transferred to a debris collection tank 45 located outside the circulation collection tank 41. Preferably, the transfer mechanism 44 is formed of a belt having a triangular fulcrum structure, wherein the lowermost end of the belt is located below the inclined lower end of the filter 43, so that the debris separated by the filter 43 is continuously transferred out of the circulation tank 41 while being caught by the belt after sliding down the inclined plate surface defined by the filter 43. Preferably, the filter 43 may be a filter screen structure capable of filtering debris, and other relatively bulky inclusions. As shown in fig. 6, the lowest end of the conveyor belt forming the transfer mechanism 44 is located below the filter element 43, so that after the dopant sliding from the filter element 43 is received, the dopant can be driven to move obliquely upwards along the conveyor belt, and the separation of the slurry solution remained in the dopant is further completed. Preferably, the surface of the conveyor belt is provided with a plurality of strip-shaped bulges so that the strip-shaped bulges can effectively intercept the dopant, so that the dopant can effectively ascend along with the conveyor belt, and the dopant such as sundries, rock fragments and the like can be prevented from falling off the conveyor belt in the process of ascending the conveyor belt. Preferably, the end of the conveyor belt remote from the filter element 43 is provided with an output slope inclined downwards in such a way as to be lower than the highest conveyor belt point, so that the upward separated dope can be converted into a downward state, so that the dope accumulated on the surface thereof can fall into the dope collection tank 45. Preferably, the conveyor belt is formed of a perforated belt body having an array arrangement, and the positioning roller adjacent to the debris collection pond 45 is provided with air-jet channels so that the conveyor belt is cleaned by continuous air-jet to separate the dopants attached to the surface of the conveyor belt.

Preferably, a flow limiting assembly 5 capable of further buffering flow fluctuation possibly generated in the directional flow process of the slurry flow is further arranged at the downstream of the diversion pressure control assembly 2, and the flow limiting assembly 5 can enable the flow stability of the slurry flow to be higher. Specifically, the flow limiting assembly 5 defines the flow state parameter of the final slurry liquid flow by providing parallel channels and arranging buffer structures for mutually inhibiting high-pressure flow in the parallel channels, and the parallel channels are deflected by the impact of the liquid flow to have restoring capability, so that the blocking effect can be weakened by rotating the buffer structures when the impact is reduced, and the stability of the output liquid flow is ensured. Preferably, the flow fluctuation refers to the change in the output flow rate caused by the reciprocating operation of the pumping system and the instability of the input flow rate of the slurry solution during the pumping process of the slurry solution.

As shown in fig. 4 and 5, the flow limiting assembly 5 can inhibit fluctuation of the slurry flow flowing into the drilling pipeline so as to improve stability of the slurry flow, so that the slurry flow entering the drilling pipeline can effectively flush and cool the drill bit and simultaneously can discharge rock debris generated by drilling the drill bit in an ascending manner along the drilling well, and stable flow rate and hydraulic pressure can effectively ensure protection of the drilling well by the flow and pressure maintaining filling of the drilling space, thereby avoiding unfavorable anomalies such as collapse and the like caused by pressurized change of underground drilling well. Preferably, the parallel variable diameter passage defined by the flow restriction assembly 5 is capable of buffer adjustment in terms of flow rate and flow rate, and at high flow rates, it is capable of reducing the flow rate in such a way as to increase the deflection, thereby reducing the hydraulic pressure and flow rate of the mud flow actually flowing into the drilling line, so that the mud flow can be directed in a relatively steady state for delivery to the drill bit as drilling fluid having specific properties.

Preferably, the flow restriction assembly 5 includes a flow restriction body 51, a flow dividing member 52, a flow retarding member 53, a flow reversing member 54, and a rebound resetting member 55. The inner tube 56 is inserted in the flow limiting tube 51 along the axial direction to divide the tube body channel into a plurality of parallel flow guiding channels, wherein the tube cavity of the inner tube 56 and the clearance space between the inner tube 56 and the flow limiting tube 51 can be used for guiding slurry solution. Preferably, the inner tube 56 and the restrictor tube 51 each have a generally rectangular cross-sectional passage such that the flow-retarding member 53 and the flow-reversing member 54 disposed in the inner tube 56 are disposed parallel to each other and at an angle to the axis of the inner tube 56 such that both define the size of the actual passable cross-section of the inner tube 56. Preferably, the flow retarding member 53 and the reverse flow member 54 are linked by a linkage rod so that both are able to deflect the same. Preferably, the plate structure defined by the flow retarding member 53 and the counter-flow member 54 is inserted into the inner tube 56 by a rotation axis perpendicular to the axis of the inner tube 56, so that the flow retarding member 53 and the counter-flow member 54 can rotate about the axis to change the actual passable amount of the inner tube 56. Preferably, the counter flow member 54 is downstream of the flow retarding member 53 and is capable of disturbing and blocking the slurry flow during simultaneous deflection with the counter flow member 54, thereby forcing the high pressure slurry flow to be able to counter-flow between the flow retarding member 53 and the counter flow member 54 to effectively slow the flow momentum of the slurry flow. Preferably, the rotation shafts respectively penetrate through the central axes of the flow retarding member 53 and the reverse flow member 54, and are disposed in such a manner as to be perpendicular to and intersect with the axis of the inner tube 56, so that the change in the magnitude of the angle between the cross sections of the flow retarding member 53, the reverse flow member 54 and the inner tube 56 defines the actual passable amount of the inner tube 56, thereby changing the actual passable amount by changing the angle. Preferably, the rotation shaft defining the slow flow member 53 defines the rotational connection position of the flow dividing member 52 provided in the gap space between the inner tube 56 and the flow limiting tube body 51 in such a manner as to penetrate the tube body of the inner tube 56, so that the flow dividing member 52 can rotate following the slow flow member 53, so that the passage amount of the two respectively defined inner tubes 56 and the passage amount of the gap space are changed.

Preferably, a rebound reset member 55 is further provided on a common rotation shaft of the flow dividing member 52 and the flow retarding member 53. The rebound reset member 55 effectively defines the initial relative operating positions of the flow divider and the flow retarding member 53, and when the impact strength of the slurry flow on both is reduced, the flow divider 52 and the flow retarding member 53 can also change the passage cross sections thereof by rebound reset to adjust the actual traffic so that a relatively stable flow can be output in a smaller flow state. Preferably, rebound reset member 55 is a torsion spring. The linkage setting of the flow dividing piece 52 and the flow slowing piece 53 enables the flow dividing piece 53 to synchronously rotate in the same direction but with different included angles between the cross sections of the channels when the flow slowing piece 53 deflects due to the impact of liquid flow, so that the included angles between the flow dividing piece 52 and the cross sections of the channels are different in size, and the interception amount of liquid flow and the size of the circulated cross sections of the flow dividing piece and the flow dividing piece are different. Preferably, the flow dividing member 52 is arranged in such a way that the plate body defined by the flow dividing member and the axial direction of the clearance space are at a certain included angle, so that the flow dividing member 52 deflects at different angles according to the flow speed and the hydraulic pressure of the slurry liquid flow in the clearance space, and the slow flow member 53 and the reverse flow member 54 deflect synchronously, so that the real-time maximum conduction in the flow limiting body 51 and the inner pipe 56 is forced to change. Preferably, the plate surface of the flow-retarding member 53 and the plate surface of the flow-dividing member 52 are disposed in a mutually perpendicular manner, so that when the conduction amount of the gap space where the flow-dividing member 52 is located increases, the conduction amount of the inner tube 56 where the flow-retarding member 53 is located decreases. Further preferably, the angle between the plate defined by the flow divider 52 and the plate defined by the flow restrictor 53 may be an acute angle less than ninety degrees such that there is a significant difference in the size of the pass-through cross-section defined by the ganged deflection therebetween. In the actual flow-through process, the initial plate surface of the flow divider 52 seals the gap space in a manner perpendicular to the axis of the flow-limiting pipe 51. In the case where the flow dividing member 52 receives a smaller impact force and forms an angle of more than 45 ° with the axis of the flow restricting body 51, the slow flow member 53 forms an angle of less than 45 ° with the axis of the inner tube 56, so that the inner tube 56 can allow more fluid substances to pass through to supplement the flow rate of the slurry flow which is directionally flowing through the clearance space. When the flow dividing member 52 receives a large fluid impact force and gradually deflects to an angle smaller than 45 degrees with the axis of the flow limiting pipe body 51, the angle between the flow retarding member 53 and the axis of the inner pipe 56 increases, thereby reducing the passing amount of the fluid substance in the inner pipe 56. The linkage type buffer structure can effectively weaken flow fluctuation of slurry liquid flow flowing into the drilling pipeline, so that the flow of the slurry liquid flow flowing into the drilling pipeline can always keep a relatively stable value.

Preferably, the monitoring module 6 is used to monitor parameters of the fluid flow in the pump body 11 and output by the split pressure control unit 2. The monitoring module 6 is also mounted on a removable wear unit of the pump body 11 and the pump head 12 for monitoring data such as wear amount. Specifically, the monitoring module 6 can also collect the viscosity, granularity and the like of the slurry solution generated by proportioning the pretreatment assembly 3, so that the mixed slurry solution can be worn on the surface of the equipment under specific hydraulic pressure and flow rate by combining the pre-prepared slurry component proportion and the related substance ratio which are recorded in advance. Preferably, the monitoring module 6 comprises a first acquisition unit 61 for acquiring parameters of the fluid flow, a three-dimensional profile scanning unit 62 for performing the dimensional acquisition and profile construction of the pump head 12, and a third acquisition unit 63 for acquiring the own parameters of the slurry formulated by the pre-treatment assembly 3. Preferably, the first acquisition unit 61 may be a hydraulic pressure sensing unit and a flow rate sensing unit capable of monitoring the hydraulic pressure and flow rate of the liquid flow. Preferably, the three-dimensional profile scanning unit 62 may be annularly disposed in the pump body 11, and its signal output end face is disposed toward the axis of the pump body 11 so that it can acquire point cloud data of the surface profile of the pump head 12 disposed in the pump body 11 by means of ultrasonic data acquisition or the like. Preferably, the three-dimensional profile scanning unit 62 is mounted on the inner side wall of the pump body 11 in a mosaic manner, and an annular mirror wall that seals the accommodation space is further provided on the inner side wall. Further preferably, the three-dimensional profile scanning unit 62 may be an ultrasound scanning device that constructs the profile of the object using ultrasound positioning data. Preferably, the third collecting unit 63 is mainly used for collecting the inherent parameter information of the mixed solution such as granularity, viscosity, slurry concentration and the like of the slurry solution which is completely prepared, so that the processing module 7 can analyze the association condition between the inherent parameter of the slurry and the abrasion condition of spare and accessory parts when the components and the proportions are different.

As shown in fig. 8, the data collected by the monitoring module 6 can be directly transmitted to the processing module 7. The processing module 7 carries out induction arrangement on different acquired data according to the system position where the monitoring module 6 is positioned and the time sequence relation among the data values acquired by the monitoring module 6, and carries out the same group record on the data acquired by the different monitoring modules 6 at the same or similar time points, so that the processing module 7 establishes a correlation curve between the state parameters and the own parameters of the slurry flow and the abrasion data of the pump head 12 in the slurry flow circulation flow process according to the slurry flow parameters at different time points and the size data of the pump head 12 at corresponding time points, thereby carrying out continuous prediction on the abrasion condition of the pump head 12 and the pumping main body 1 in a certain time period according to the curve, and simultaneously correcting the correlation curve by utilizing the data acquired in real time. Preferably, the acquisition of real-time data is periodically acquired at intervals with the correlation curve established. By means of the establishment of the prediction correlation curve, an operator can obtain the abrasion condition of related spare and accessory parts in the working process in advance, particularly after the slurry flow parameters change, the accuracy of the monitoring result and the prediction data is maintained through the correction of the monitoring data, so that the operator can accurately control the working abrasion condition of the spare and accessory parts of the system and the possible fault condition caused by the working abrasion condition, the operator can reasonably and effectively arrange the maintenance of the system and the replacement of the spare and accessory parts according to the actual working requirements and the buffering time schedule, and the pumping system is guaranteed to continuously perform drilling pumping work for a long time.

Examples

The application also relates to a monitoring method of the drilling pumping system, which is mainly used for monitoring the working state of the pumping system, analyzing the circulation state of the pumped slurry liquid flow and the abrasion condition of related pumping parts according to monitoring data, and accordingly maintaining or replacing the abrasion parts according to the predicted result, so that the operation efficiency and the operation safety of the pumping system are improved, and the overload risk of the system is reduced.

Preferably, the three-dimensional profile scanning unit 62 is capable of scanning the pump head reciprocating within the pump body 11 to acquire point cloud data of the outer profile of the pump head 12, thereby generating a three-dimensional size image of the pump head 12. Specifically, the three-dimensional profile scanning unit 62 is disposed around the side wall of the cavity of the pump body 11, and is separated from the cavity of the pump body 11 by a structure such as a projection lens/an annular glass sheet, and when the pump head 12 passes through the section defined by the three-dimensional profile scanning unit 62, the three-dimensional profile scanning unit 62 can analyze the actual surface profile size of the pump head 12 according to the transmission duration and the transmission path and direction of the ultrasonic wave by bouncing the surface thereof. The processing module 7 is capable of analyzing the wear condition and drawing the wear curve according to the measured actual size data, so that the wear condition of the related accessories in one three data acquisition periods or a plurality of continuous data acquisition periods is predicted through the wear curve, the accuracy of drawing the curve is verified through regular data acquisition, and the curve data is corrected when the difference exists.

Preferably, the processing module 7 analyzes the wear condition according to the continuous monitoring data collected by the monitoring module 6, calculates the service life of the related spare and accessory parts in the circulating driving environment according to the wear condition, and the processing module 7 can adjust the pressure release share and the buffer quantity of the related pressure regulating structure according to the monitoring data and the actual demand condition, so that the processing module 7 outputs related operation advice to an operator, and the operator changes the unit wear quantity by performing pressure release adjustment or flow adjustment, thereby prolonging the service life of the related spare and accessory parts and reducing the construction cost. Preferably, the pump body 11 and the pump head 12 are both provided with ceramic casings, so that abrasion generated by relative movement between the pump body 11 and the pump head 12 is mainly aimed at a ceramic layer body with stronger abrasion resistance, and the ceramic layer body which is detachably sleeved can be replaced according to actual monitoring data, thereby ensuring sustainable operation of the pumping system.

Preferably, the processing module 7 further generates a correlation curve according to the actual own parameters of the slurry after the slurry filtering and slurry mixing treatment in the same time period and the abrasion data in the time period, so as to analyze the relationship between the slurry flow data and abrasion, and further predict the change of the abrasion condition corresponding to the change of the drilling depth and the discharge rock debris in the drilling process. It is further preferred that the processing module 7 is also capable of simultaneously pre-completing the determination of the applicable condition of the equipment components for different drilling depths in advance, thereby pre-completing the maintenance or replacement of the components according to the use requirements of a single duty cycle.

Preferably, the processing module 7 can perform relevance integration by utilizing the heterogeneous data collected by the monitoring module 6, and analyze the wearing condition and wearing curve of the pumping main body 1 continuously working under different working conditions through the integrated data, so that early warning and reminding can be performed in a mode of judging working wearing in advance. Especially, the processing module 7 can effectively pump the life of the related easy-to-strain spare and accessory parts of the main body 1 to accurately monitor, so that the working state of the spare and accessory parts is predicted by using monitoring data, and further, the system damage is avoided. The processing module 7 can also utilize the monitoring data collected in real time to update analysis data and prediction data in real time, so that the wear condition of parts with better accuracy is provided for operators. Preferably, the processing module 7 corrects the correlation curve by using real-time data collected by the periodic operation of the monitoring module 6, so as to predict the wear condition of the pump head 12 in a certain period of time according to the corrected correlation curve, and pre-formulate a maintenance or replacement treatment scheme of the parts of the pumping main body 1 by using the predicted data. The maintenance or replacement treatment scheme mainly predicts the maintenance time or replacement time in advance according to the abrasion condition, so that the use of parts is effectively grasped, and overuse or insufficient abrasion in use is avoided as much as possible. Preferably, the processing module 7 may be a processor, a processing unit or a server integrating the relevant software-capable. Specifically, the processing module 7 can correlate the parameters of the slurry filtering and the slurry preparation process with the abrasion condition, acquire abrasion prediction by analyzing the abrasion condition of the self parameters of the prepared slurry solution and the same time period, and estimate the abrasion strength of the prepared slurry possibly existing in the specific pipeline structure when directional pumping occurs according to the slurry composition proportion and related material proportion prepared in the slurry preparation process, so as to calculate the abrasion amount of a pumping structure and a pumping pipeline caused by a single stratum drilling process according to the abrasion coefficient, calculate and predict the abrasion amount of the next stage according to the real-time abrasion amount, predict the service life of an abrasion inner layer, and feed back and early warn information when the abnormal abrasion or the abrasion amount possibly existing reaches the early warning value/the maximum safe amount in advance, thereby being capable of carrying out maintenance and replacement of related accessories in advance.

Preferably, the monitoring module 6 of the present application can also monitor the flow rate and the hydraulic pressure of the slurry flow synchronously, and the high pressure and the high flow rate also increase the impact and the abrasion of the slurry flow to the inner cavity parts of the pumping body 1, so the processing module 7 uses the monitoring data obtained by the first collecting unit 61 to analyze the abrasion conditions under different hydraulic pressures and flow rates, so as to adjust the working parameters of the pumping body 1 according to the actual pumping requirement of the drilling fluid. Preferably, the processing module 7 calculates the amount of wear by periodically generating a three-dimensional profile model of the pump head 12 to obtain the actual size of the pump head 12. Preferably, the processing module 7 is able to generate a wear profile under stable conveying conditions from the wear data acquired by the monitoring module 6. Specifically, the monitoring module 6 and the processing module 7 acquire the state of the section by measuring the wear change and the hydraulic change at the first time, and predict the data at the second time by using the parameters at the first time, and when abnormal fluctuation occurs at the second time, the acquisition density of the data is improved, so that the service life and the wear curve are optimized according to the data with higher acquisition frequency, and the real-time update of the predicted data is realized. The processing module 7 can correct the prediction curve/prediction model through the real-time monitoring data under the condition that the real-time monitoring data deviate from the prediction data, and synchronously adjust the acquisition frequency of the monitoring module 6 to enable the acquisition frequency to be higher, so that the prediction curve/prediction model is updated by using more real-time data, and the accuracy of the prediction data output by the processing module 7 is improved.

The invention is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present invention, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present invention, fall within the scope of protection of the present invention. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the invention is defined by the claims and their equivalents. Throughout this document, the word "preferably" is used in a generic sense to mean only one alternative, and not to be construed as necessarily required, so that the applicant reserves the right to forego or delete the relevant preferred feature at any time.

Claims

1. A drilling pumping system comprising a pumping body (1) providing a directional delivery driving force for a mud solution in a closed loop fluid flow circuit formed in cooperation with a drilling well, characterized in that,

at least a flow dividing and controlling assembly (2) and a flow limiting assembly (5) are arranged at the output end of a cavity which is constructed by the pumping main body (1) and is used for enabling the slurry solution to flow,

the diversion pressure control assembly (2) can regulate and control the state parameters of the slurry liquid flow flowing into the drilling pipeline according to the mode that the diversion pressure control assembly can divert the slurry liquid flow output in the pumping main body (1),

The shunt pressure control assembly (2) comprises a pressure control valve body (21), a conduction valve core (22) and a pressure control elastic limiting piece (23), wherein the conduction valve core (22) is inserted into a through flow guide channel in the pressure control valve body (21) in a mode that the axis of the conduction valve core is coincident with that of the pressure control valve body (21), the pressure control elastic limiting piece (23) can limit the initial working position of the conduction valve core (22) in the pressure control valve body (21), the conduction valve core (22) can translate along the axial direction under the pushing of slurry flow flowing into the flow guide channel, a flow dividing hole (211) is formed in the side wall of the pressure control valve body (21) blocked by the conduction valve core (22), and a pressure release regulating piece (24) capable of limiting the size of the conduction section of the flow dividing hole (211) is sleeved on the pressure control valve body (21); the diversion hole (211) can be communicated with the diversion channel when the guide valve core (22) is pushed by the slurry liquid flow which flows directionally to translate, so as to divert the slurry liquid flow flowing into the diversion channel defined by the pressure control valve body (21) to reduce the flow rate of the slurry liquid flow passing through the guide valve core (22);

The flow-limiting assembly (5) is arranged downstream of the diversion pressure-controlling assembly (2) in such a way that it can buffer the flow fluctuations of the slurry flow pumped by the pumping body (1) so that the slurry flow can be continuously fed into the drilling pipeline in a stable state,

an inner pipe (56) capable of separating a pipe cavity is inserted into a flow limiting pipe body (51) of the flow limiting assembly (5), so that the pipe cavity of the flow limiting pipe body (51) is separated into a plurality of parallel pipelines, a flow passage defined by the pipe cavity of the inner pipe (56) and a flow passage defined by a clearance space between the flow limiting pipe body and the flow limiting pipe body (51) are respectively provided with a flow buffering piece (53) and a flow dividing piece (52), wherein the flow buffering piece (53) and the flow dividing piece (52) are in transmission connection through a rotating shaft penetrating through the inner pipe (56), so that the two can synchronously deflect in the inner pipe (56) and the clearance space respectively, the passable amount of slurry flow in the inner pipe (56) and the clearance space is synchronously changed in a linkage mode, and the inner pipe (56) and the passable amount of the clearance space are inversely proportional to be synchronously changed, so that slurry flow flowing into the flow limiting assembly (5) is buffered;

The device is characterized in that a monitoring module (6) capable of monitoring state parameters of slurry liquid flow and periodically measuring the outline size of a pump head (12) of the pumping main body (1) is further arranged in the pumping main body (1), so that the working state of the pumping system is monitored in real time, and a processing module (7) utilizes real-time data acquired by the monitoring module (6) to complete the prediction of the service life and the working state of the pumping main body (1).

2. Drilling pumping system according to claim 1, wherein a plurality of said pumping bodies (1) are arranged in parallel and the outputs thereof are in converging communication via a converging line (16) such that a plurality of intermittent pumping bodies (1) of a slurry flow are capable of providing a continuous input slurry flow to said drilling line, wherein the energized flow of slurry solution means that the pumping bodies (1) impart a directional flow force to the slurry solution by a pumping process;

the flow dividing and pressure controlling assembly (2) and the flow limiting assembly (5) are arranged in the converging pipeline (16).

3. Drilling pumping system according to claim 2, wherein the input end of the pumping body (1) is further connected with a pre-treatment assembly (3) capable of preparing and mixing the mud solution;

The input end of the pretreatment component (3) is communicated with a circulation treatment component (4) for performing slurry filtering treatment on the slurry solution which is discharged from the drilling and carries rock debris;

the recycling treatment assembly (4) can provide the pre-treatment assembly (3) with recyclable slurry by means of filtration.

4. Drilling pumping system according to claim 3, wherein the pre-treatment assembly (3) comprises a mixing line (31), a converging chamber (32) and an inclined de-bubbling line (33), wherein,

the mixing pipeline (31) is used for communicating the circulating treatment assembly (4) with the converging chamber (32) in a mode of constructing a plurality of spiral coils which are communicated in parallel, and a charging auxiliary pipe (312) of the mixing pipeline (31) can be used for adding component substances into slurry which is conveyed by the main pipe body (311) and is subjected to slurry filtering treatment;

one end of the converging chamber (32) far away from the mixing pipeline (31) is connected with the inclined defoaming pipeline (33) capable of performing defoaming treatment on the mixed slurry solution.

5. A drilling pumping system according to claim 4, wherein the circulation treatment assembly (4) is provided with a transfer mechanism (44) for continuously transferring debris under the filter element (43) in its built inclined configuration in such a way that it can continuously perform the filtration treatment.

6. A method of monitoring a drilling pumping system, in which a monitoring module (6) capable of monitoring a state parameter of a slurry flow and of acquiring the wear of components of the pumping body (1) is installed in a pumping body (1) of a drilling pumping system according to any one of the preceding claims 1-5, characterized in that it comprises the following steps:

the monitoring module (6) is used for collecting dynamic parameters of slurry liquid flow output by the pumping main body (1) and scanning to obtain three-dimensional outline dimension data of a pump head (12) of the pumping main body (1) in a continuous working process;

generating a correlation curve representing the wear condition of the pump head (12) associated with the dynamic parameters of the slurry flow by using the acquired dynamic parameters of the plurality of groups of slurry flow and the size data of the pump head (12);

and correcting the association curve by utilizing real-time data collected by the periodic operation of the monitoring module (6), so that the abrasion condition of the pump head (12) is predicted by the corrected association curve, and a maintenance or replacement treatment scheme of the pumping main body (1) is preset by utilizing the predicted data.

7. The monitoring method according to claim 6, characterized in that the monitoring module (6) is further capable of collecting the own parameters of the slurry solution formulated by the pre-treatment assembly (3) so that the processing module (7) generates a correlation curve between the own parameters of the slurry solution and the amount of wear.

8. The monitoring method according to claim 7, wherein when the real-time monitoring data collected by the monitoring module (6) deviates from the predicted data, the processing module (7) corrects the correlation curve using the real-time monitoring data, and controls the monitoring module (6) to accelerate the update of the correlation curve in such a manner as to shorten the collection period, so as to correct the predicted data.