CN113818825A

CN113818825A - Unmanned intelligent solid phase control system

Info

Publication number: CN113818825A
Application number: CN202111194211.XA
Authority: CN
Inventors: 宋国平; 王愉江; 黄杰; 唐浩; 冷茂田; 张璐
Original assignee: Sichuan Honghua Petroleum Equipment Co Ltd
Current assignee: Sichuan Honghua Petroleum Equipment Co Ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2021-12-21
Anticipated expiration: 2041-10-13
Also published as: CN113818825B

Abstract

The invention relates to the technical field of drilling fluid treatment, in particular to an unmanned intelligent solid-phase control system. The system comprises a supply module, a screening module, a degassing module, a sand and mud removing module, a centrifugal separation module, a feeding module and a slurry rotating module, and further comprises a host control module, a solid control module, a supply control module, a screening control module, a degassing control module, a sand and mud removing control module, a centrifugal separation control module, a feeding control module and a slurry rotating control module. By adopting the control system, the start and stop of the equipment such as the vibrating screen, the deaerator, the desander, the desliming device, the centrifuge, the mixing material and the like are controlled by collecting corresponding data, and the automatic control of the solid control system is realized.

Description

Unmanned intelligent solid phase control system

Technical Field

The invention relates to the technical field of drilling fluid treatment, in particular to an unmanned intelligent solid-phase control system.

Background

The solid control system is the solid control system. The solid control system is an essential component in the oil and gas drilling process, and consists of drilling fluid (liquid phase or gas phase), a solid control tank body, solid control equipment, pipelines and valves thereof, and realizes multiple functions through the circulation of the drilling fluid in the drilling process so as to meet the requirements of the drilling work. Circulation of the drilling fluid is maintained by a mud pump. The circulating drilling fluid returning from the wellhead flows to the solid control system, and the drilling fluid can continue to participate in circulation after a series of solid phase purification treatments or new material addition. According to different well depths and different stratums, the circulating drilling fluid is purified or related additives are added in different stages so as to change the density, the viscosity and the like of the circulating drilling fluid. At present, equipment operation control, valve opening and closing operation, drilling fluid performance detection, drilling fluid tank field monitoring and the like of a solid control system are all completed by field manual operation of a solid control mud engineer.

Generally, the number of personnel in the solid control area is 5 during the drilling process. The mud engineer is responsible for starting, stopping, maintaining and monitoring the electrical equipment such as a tank area vibrating screen, a degasser, a mud cleaner, a centrifugal machine, a stirrer, a mixing material and the like according to the drilling process, the flow of drilling fluid returned from a wellhead and the detection result characteristics of the drilling fluid, and is responsible for manually opening/closing each valve of the flow system. In particular, the number of valves of a manifold system is about 100 in general 30 and 40 drilling machine solid control valves, and the number of valves of 70 and 90 drilling machine solid control valves can reach 150.

In the conventional replenishment process, as shown in fig. 1.1, an operator manually opens the liquid inlet valve 4-01 'and the liquid outlet valve 3-01', manually starts the replenishment pump P-02 ', and observes the pressure value of the pressure gauge PT-01' to judge the replenishment effect. The number of the supply pumps P-02 'and the number of the supply bins T-02' may be 1 or more. When a plurality of supply pumps P-02 'and supply silos T-02' are provided, a supply line consisting of 1 supply pump P-02 'and 1 supply silo T-02' may be selected, or a plurality of supply lines may be selected. Meanwhile, an operator waits on the site of the supply tank and observes the liquid level of the supply bin T-02'. When the liquid level in the supply bin T-02 'is too low, a slurry transferring process is manually started, a slurry transferring pump is used for replenishing drilling fluid to the bin T-02', and at least 1 person can manage and supply the drilling fluid in the whole drilling process.

FIG. 2.1 is a schematic diagram of the screening of the vibrating screens in the conventional drilling process, wherein a mud engineer starts the vibrating screens (S-01 ', S-02 ' and S-03 ') according to the condition of observing the overflow flow of a wellhead, if the overflow flow is small, 1 vibrating screen is started, otherwise, a plurality of vibrating screens are started. Besides the vibrating screen needs to be started, the communicating valves (10-01 ', 10-02 ', 10-04 ') between the flow dividing box and the vibrating screen must be opened. In addition, when the drilling fluid in the diversion box flows directly to the sand settling bin (C-01 ') or directly out of the tank without screening, the corresponding valve 10-05 ' or 10-03 ' should be opened. The opening and closing of the liquid inlet valve of the vibrating screen are both manually opened by a mud engineer.

Fig. 3.1 is a schematic diagram of a conventional degassing process, where bubbles in the drilling fluid are detrimental to the drilling operation, requiring a degasser to remove bubbles from the drilling fluid. When the mud engineer measures that the gas content in the drilling fluid is too high and needs to be degassed, the valves (8-02 'and 6-03') of the degassing liquid supply pump P-04 'for liquid inlet and outlet are manually opened, the degasser is opened, then the degassing liquid supply pump P-04' is started, the drilling fluid in the drilling fluid bin C-03 'flows through the liquid inlet valve 8-02', the degassing liquid supply pump P-04 'and the liquid outlet valve 6-03', so that vacuum is formed in the degasser tank body, the degasser tank body sucks the drilling fluid in the degassing bin C-02 'into the degasser tank body under the siphon action, bubbles are separated from the liquid in the degasser tank body, the bubbles are changed into gas to be discharged through a degassing pipeline, and the drilling fluid in the degasser tank body enters the drilling fluid bin C-03' through a jet pipe, so that the degassing function is completed.

As shown in fig. 4.1, the conventional sand and mud removing process is schematically illustrated, and a solid control mud engineer determines that the sand content of the circulating drilling fluid is too high according to experiments, and the sand and mud removing process should be started. Generally, the sand and the mud are removed simultaneously, and all the valve parts are manual valves. When removing sand and mud, the vibrating screen MC-01 'of the sand and mud remover is manually started, the liquid inlet valve 8-03' and the liquid outlet valve 6-04 'of the sand removing liquid supply pump are started, and the sand removing liquid supply pump P-05' is started. Starting the liquid inlet valve 8-04 'and the liquid outlet valve 6-05' of the desilting liquid supply pump P-06 ', and starting the desilting liquid supply pump P-06'.

FIG. 5.1 is a schematic diagram of a conventional centrifugation flow scheme. The flow principle of a medium-speed centrifuge and a high-speed centrifuge which are configured in a general solid control system are the same. In the drilling process, along with the continuous circulation of the drilling fluid, the density and the viscosity of the drilling fluid are gradually increased, and when the performance of the drilling fluid is influenced, a centrifugal machine needs to be started. The mud engineer may also turn on the centrifuge based on the drilling time, with the total time to turn on the centrifuge being 50% -90% of the total drilling time. Under the conventional condition, a mud engineer detects the sand content, density and viscosity of the drilling fluid on site, and comprehensively judges and operates the centrifugal operation. When the centrifugal machine needs to be started, the liquid inlet and outlet valves 5-01 'and 6-18' of the liquid supply pump of the centrifugal machine need to be opened, the CF-01 'of the centrifugal machine is started, the centrifugal machine runs normally, and then the liquid supply pump SP-01' of the centrifugal machine is started.

During drilling, the drilling fluid needs to be added with different materials for many times to change the performance of the drilling fluid. The main equipment of the common feeding system comprises a mixing pump, a mixing hopper, an ash tank, a material crane and a mixing bin. Generally, a well site is provided with 2-3 mixing pumps and mixing hoppers, and a plurality of ash cans filled with different materials for standby. Many blendors pump, compounding funnel and a plurality of blending bunker connect through pipeline, valve, constitute many reinforced circuits. When feeding is required, the material is taken out of an ash tank, and certain lines are selected for mixing and feeding.

Fig. 6.1 is a schematic diagram of a conventional feeding and mixing flow and a manual feeding system. A pump P-08 ', a funnel H-02', an ash tank W01 'and a mixing bin C-09' are selected for manual mixing. Firstly, opening a liquid inlet valve 8-07 ', a liquid outlet valve 6-16', starting a pump P-08 ', observing that the pressure of a pressure gauge PT-07' of a mixing pipeline is not less than 0.2Mpa, hoisting the material of an ash tank W01 'to the upper part of a funnel H-02' by using a material bag through a hoisting machine, and manually adding the material in the material bag into the funnel.

The slurry transferring process is to transfer the drilling fluid in one bin to the other bin. The equipment of the slurry transferring flow comprises a slurry transferring pump, a valve and a pipeline.

Fig. 7.1 is a schematic view of a conventional slurry transfer process. And the mud engineer determines whether to start the slurry rotating process by observing the numerical value LT-04 'of the liquid level meter LT-04' of the second slurry rotating bin C-04 'or directly observing the liquid level in the second slurry rotating bin C-04'. When the slurry needs to be transferred, a liquid inlet valve 8-01 'and a liquid outlet valve 6-02' of the slurry transfer pump P-03 'are sequentially opened, the slurry transfer pump P-03' is started again to transfer the drilling fluid in the slurry transfer bin I-03 'to the slurry transfer bin C-04' II, a branch is arranged at a slurry transfer outlet, and a communicating valve 3-05 'is arranged on the branch to transfer the drilling fluid in the slurry transfer bin I-03' to the slurry supply bin T-02 'when the slurry supply bin T-02' needs.

Fig. 8.1 is a composition diagram of a conventional solid control system, which is composed of a solid control tank body, solid control equipment, pipelines, valves, instruments and meters, and the like, wherein all the valves, the equipment and the like are opened and closed, the equipment is started and stopped, the drilling fluid performance is detected, the equipment is maintained and the like, and the equipment is operated and managed on site by a mud engineer.

The drilling site environment condition is bad, the solid control system belongs to the open-air equipment, the valve is opened/closed, the time and the labor are wasted, the labor condition is extremely bad, and the intelligent degree of the drilling machine needs to be improved.

The prior art has the following defects:

1. because the valves on site need to be operated manually, the labor cost is high;

2. because the solid control electrical equipment adopts high voltage electricity, the manual operation has larger electric shock danger;

3. because equipment such as valves all need manual operation, the valve is in large quantity and distribution range is wide, and manual operation is dangerous great, wastes time and energy when the manual work is operated, and work efficiency is lower.

Disclosure of Invention

The invention aims to provide an unmanned intelligent solid-phase control system for reducing drilling cost, saving human resources, reducing risks caused by manual operation and improving the intelligent degree of a drilling machine.

In order to achieve the above purpose, the invention provides the following technical scheme:

an unmanned intelligent solid-phase control system comprises a supply module, a screening module, a degassing module, a desanding and desilting module, a centrifugal separation module, a feeding module and a slurry transferring module, wherein sensors are arranged in the supply module, the screening module, the degassing module, the desanding and desilting module, the centrifugal separation module, the feeding module and the slurry transferring module, and control ports are arranged in each of the supply module, the screening module, the degassing module, the desanding and desilting module, the centrifugal separation module, the feeding module and the slurry transferring module;

the system also comprises a host control module and a solid control module;

the solid control module comprises a central processing unit, a supply control module, a screening control module, a degassing control module, a sand and mud removing control module, a centrifugal separation control module, a feeding control module and a slurry rotating control module, and the control port is in communication connection with the central processing unit;

the replenishment control module controls the start and stop of a replenishment pump in the replenishment module and the opening or closing of a valve in the replenishment module according to the drill-up and drill-down states of the drilling machine, and also controls the overflow direction of a wellhead or controls whether a slurry rotating pump rotates slurry to the replenishment cabin according to the height of the liquid level in the replenishment cabin;

the screening control module starts or stops the work of the vibrating screen according to the flow of the overflow of the wellhead into the flow distribution box, controls a valve in the screening module to be opened or closed, and controls the inclination angle of the vibrating screen according to whether the vibrating screen runs slurry or not;

the degassing control module controls the start and stop of the degasser and the degassing liquid feed pump according to the comparison condition of the drilling fluid gas content detection value and the program preset value, and controls the opening or closing of a valve in the degassing module;

desanding and desilting control module controls the desander to realize the desanding function and controls the desilter to realize the desilting function, include: the desanding and desilting control module controls the start and stop of the desander, the desilter and a liquid supply pump thereof and controls the opening or closing of a valve in the desanding and desilting module according to the liquid level value and/or the sand content detection value of the desanding bin and/or the desilting bin; when the sand content of the sand removing bin and the mud removing bin is lower than the preset values and the liquid levels of the sand removing bin and the mud removing bin are too high, the sand removing and mud removing control module starts a liquid supply pump of the sand remover or the mud remover and controls the opening or closing of a related valve, but does not start a vibrating screen of the sand removing and mud removing device to realize a slurry rotating function;

the centrifugal separation control module controls the starting and stopping of the centrifuge and a centrifuge liquid supply pump according to the density of the drilling fluid and/or the viscosity and/or the sand content of the drilling fluid and/or the running time of the centrifuge, and controls a valve in the centrifugal separation module to be opened or closed, so that the liquid phase and the solid phase of the drilling fluid are separated, and the purpose of changing the density and/or the viscosity and/or the sand content of the drilling fluid is achieved;

the feeding control module controls the opening or closing of mixing equipment and a valve in the feeding module according to the drilling depth and/or the density of the drilling fluid and/or the viscosity of the drilling fluid and/or the pH value of the drilling fluid, and materials in different ash tanks are added into a mixing hopper to realize automatic feeding;

the slurry transferring flow control module controls the start and stop of a slurry transferring pump and the opening or closing of a valve on a slurry transferring flow line according to the level value of the slurry transferring bin to realize slurry transferring;

the host control module is in communication connection with the central processing unit, and the central processing unit controls the operation or stop of the replenishment control module, the screening control module, the degassing control module, the desanding and desilting control module, the centrifugal separation control module, the feeding control module and the slurry rotating control module according to data transmitted by the host control module and/or each control port, so that the intelligent control of a solid phase control system is realized;

when the supply control module, the screening control module, the degassing control module, the desanding and desilting control module, the centrifugal separation control module, the feeding control module and the slurry rotating control module break down in the operation process, the central processing unit receives a fault signal and gives an alarm.

As a preferable scheme of the invention, the supply control module, the screening control module, the degassing control module, the sand and mud removing control module, the centrifugal separation control module, the feeding control module and the slurry rotating control module are all integrated in the central processing unit.

As a preferred scheme of the invention, the replenishment control module controls the start and stop of a replenishment pump in the replenishment module and the opening or closing of a valve in the replenishment module according to the drill tripping and drill tripping states of the drilling machine, and controls the overflow direction of a wellhead or controls whether a slurry pump is transferred to the replenishment bin according to the height of the liquid level in the replenishment bin, and the method specifically comprises the following steps:

when the liquid level of the replenishment bin is higher than the minimum liquid level threshold value, the central processing unit controls the replenishment control module to start a replenishment process; the starting replenishment process comprises the following steps: opening a liquid inlet valve at one end of the replenishing pump, a liquid outlet valve at the other end of the replenishing pump and the replenishing pump in sequence;

when the liquid level of the supply bin is lower than or equal to the lowest liquid level threshold value, the supply control module opens a liquid inlet valve of the supply bin through a wellhead or a slurry transfer pump and closes a liquid inlet valve of a flow distribution box, slurry is transferred to the supply bin, and the liquid level of the supply bin is raised;

when the liquid level of the supply bin is higher than the highest liquid level threshold value, the central processing unit starts a supply flow, stops the slurry transfer flow if the slurry transfer flow is in progress, and simultaneously closes a valve of the wellhead overflowing to the supply bin and opens a valve of the shunt box to prevent the liquid level of the supply bin from continuously rising.

As a preferred scheme of the present invention, the screening control module starts or stops the operation of the vibrating screen according to the flow rate of the overflow of the wellhead into the diversion box, controls the opening or closing of a valve in the screening module, and controls the inclination angle of the vibrating screen according to whether the vibrating screen runs the slurry, and the specific steps include:

in the process of drilling down and drilling,

when the flow of the drilling fluid flowing to the flow distribution box is smaller than or equal to a first flow threshold value, starting the first vibrating screen, then opening a communication valve between the flow distribution box and the first vibrating screen, detecting whether the first vibrating screen runs slurry or not, and if the first vibrating screen runs slurry, adjusting the inclination angle of a screen mesh of the vibrating screen to realize screening;

when the flow of the drilling fluid flowing to the flow distribution box is larger than a first flow threshold value and smaller than or equal to a second flow threshold value, starting the first vibrating screen and the second vibrating screen, then opening a communication valve between the flow distribution box and the first vibrating screen and the second vibrating screen, detecting whether the two vibrating screens run slurry or not, and if the slurry runs, adjusting the inclination angle of a screen mesh of the vibrating screen to realize screening;

when the flow of the drilling fluid flowing to the flow distribution box is larger than a second flow threshold value, starting the first vibrating screen, the second vibrating screen and the third vibrating screen, then opening communication valves among the flow distribution box, the first vibrating screen, the second vibrating screen and the third vibrating screen, detecting whether the three vibrating screens run slurry or not, and if the slurry runs slurry, adjusting the inclination angle of a screen mesh of the vibrating screen to realize screening;

the flow distribution box is also communicated with the wellhead, a communicating valve is arranged on a communicating pipeline between the flow distribution box and the wellhead, and the communicating valve is in a normally open state and is used for receiving drilling fluid overflowing from the wellhead.

As a preferred scheme of the present invention, the degassing control module controls start and stop of the degasser and the degassing liquid feed pump according to a comparison between a detected value of gas content of drilling fluid and a preset value of a program, and controls a valve in the degassing module to open or close, specifically comprising the following steps:

detecting the gas content in the drilling fluid in the drilling process;

when the gas content in the drilling fluid is greater than or equal to a first gas content threshold value, opening a liquid inlet valve and a liquid outlet valve of a degassing liquid supply pump, opening a degasser, and starting the degassing liquid supply pump;

and when the gas content in the drilling fluid is smaller than a first gas content threshold value, closing the deaerator and closing the deaeration liquid supply pump.

As a preferred scheme of the present invention, the desanding and desilting control module controls a desander to implement a desanding function and controls a desilter to implement a desilting function specifically includes the following steps:

detecting the liquid level value of the desanding bin in the drilling process;

when the liquid level value of the desanding bin is detected to be larger than or equal to the high threshold value, firstly, opening a liquid inlet valve and a liquid outlet valve of a desanding liquid supply pump, secondly, if the sand content of the desanding bin is higher than the set sand content threshold value, opening a desanding and desilting shaker and a desanding cyclone of the cleaner, starting the desanding liquid supply pump to remove sand, if the sand content of the desanding bin is lower than the set sand content threshold value, not opening the desanding and desilting shaker and the desanding cyclone of the cleaner, starting a slurry rotating valve and starting the desanding liquid supply pump to rotate slurry;

when the liquid level value of the desanding bin is detected to be smaller than or equal to the low threshold value, the desander liquid feed pump is not started, and slurry is not transferred;

the sand and mud removing control module controls the cleaner to realize the mud removing function and specifically comprises the following steps:

when the sand is removed, when the liquid level value of the desilting bin is detected to be greater than or equal to the high threshold value of the desilting bin, a liquid inlet valve and a liquid outlet valve of a desilter liquid supply pump are opened, and the desilter liquid supply pump is started to remove the mud; and when the detected liquid level value of the mud removing bin is less than or equal to the low threshold value of the mud removing bin, stopping the liquid supply pump of the mud remover.

As the preferable scheme of the invention, when the sand and mud removing process control module realizes the sand and mud removing function, the sand and mud removing time is 60-90% of the drilling time.

As a preferred scheme of the present invention, the centrifugal separation control module controls the start and stop of the centrifuge and the centrifuge liquid feed pump according to the density of the drilling fluid and/or the viscosity of the drilling fluid and/or the sand content and/or the operation time of the centrifuge, and controls the opening or closing of a valve in the centrifugal separation module, so as to realize the separation of the liquid phase and the solid phase of the drilling fluid, and achieve the purpose of changing the density of the drilling fluid and/or the viscosity and/or the sand content of the drilling fluid, and specifically comprises the following steps:

the central processing unit reads centrifugal separation parameters in real time, the centrifugal separation parameters comprise drilling fluid density, drilling fluid viscosity, sand content and centrifuge running time, the centrifugal separation parameters are compared with a preset centrifugal separation threshold value, the central processing unit starts the centrifugal separation control module according to a comparison result, and the centrifugal separation control module controls the centrifugal machine, a centrifugal machine liquid supply pump and valves in the centrifugal separation module to be started or stopped.

As a preferred embodiment of the present invention, the function of the centrifugal separation process control module to achieve centrifugal separation further comprises the following steps: the opening and closing of the centrifuge are controlled according to the drilling time length, and the opening time of the centrifuge is 50-90% of the drilling time.

As a preferred scheme of the present invention, the feeding control module controls the opening or closing of the mixing device and the valve in the feeding module according to the drilling depth and/or the drilling fluid density and/or the drilling fluid viscosity and/or the drilling fluid ph value, and feeds materials in different ash tanks into the mixing hopper to realize automatic feeding, specifically comprising the following steps:

s61, obtaining the feeding parameters of the suction tank;

s62, comparing the read charging parameters of the suction tank with a preset charging threshold value, and calculating the weight of the charging material according to the comparison result;

s63, selecting an ash tank, a slurry mixing bin, a mixing pump and a mixing hopper by the feeding control module through a control valve, opening a corresponding valve in the feeding module, and generating circulation of drilling fluid of the feeding module after starting the mixing pump;

and S64, opening the compressed air inlet valve and the discharge valve to enable the materials in the ash tank to enter the mixing hopper, and feeding and mixing the materials.

As a preferred scheme of the invention, the slurry transferring flow control module controls the start and stop of the slurry transferring pump and the opening or closing of a valve on a slurry transferring flow line according to the level value of the slurry transferring bin, and the concrete steps of the slurry transferring comprise:

s71, reading the two-level value of the slurry transferring bin;

s72, when the two-level value of the slurry transferring bin is larger than the two-level threshold value of the slurry transferring bin, the slurry transferring pump is closed; and when the two-level value of the slurry rotating bin is smaller than or equal to the two-level value threshold value of the slurry rotating bin, starting a liquid inlet valve and a liquid outlet valve at two ends of the slurry rotating pump, starting the slurry rotating pump to rotate slurry, and allowing the drilling fluid to flow into the slurry rotating bin II from the slurry rotating bin I to finish the slurry rotating.

As a preferable scheme of the invention, the slurry transferring module is provided with a branch communicated with the supply bin, and a communicating valve is arranged on the branch.

Compared with the prior art, the invention has the beneficial effects that:

by adopting the control system and the method, the start and stop of the equipment such as the vibrating screen, the deaerator, the desander, the deslimer, the centrifuge, the mixing material and the like are determined by collecting corresponding data, the automatic control of the solid control system is realized, the manual monitoring, identifying and selecting work is not needed, the cost is reduced, the danger of field operation is reduced, and the working efficiency of the drilling machine is improved.

Drawings

FIG. 1.1 is a schematic diagram of a conventional replenishment module of the present invention;

fig. 1.2A is a schematic view of a replenishment module with a hub in embodiment 1 of the present invention;

fig. 1.2B is a schematic diagram of a replenishment module without a hub according to embodiment 1 of the present invention;

FIG. 1.3 is a flowchart of the operation of a replenishment control module in embodiment 1 of the present invention;

figure 2.1 is a schematic view of a conventional screening module of the present invention;

figure 2.2A is a schematic diagram of a screening module with a hub according to embodiment 1 of the present invention;

FIG. 2.2B is a schematic diagram of a screening module without a hub according to embodiment 1 of the present invention;

FIG. 2.3 is a flow chart of the logic control of the screening control module in embodiment 1 of the present invention;

FIG. 3.1 is a schematic view of a conventional degassing module according to the present invention;

FIG. 3.2A is a schematic view of a degas module with a hub in example 1 of the present invention;

FIG. 3.2B is a schematic view of a degas module without a hub according to example 1 of the present invention;

FIG. 3.3 is a degassing flow chart of the degassing control module in embodiment 1 of the present invention;

FIG. 4.1 is a schematic view of a conventional desanding and desliming module according to the present invention;

FIG. 4.2A is a schematic view of a sand and mud removing module with a hub in embodiment 1 of the present invention;

FIG. 4.2B is a schematic view of a sand and mud removing module without a concentrator in example 1 of the present invention;

FIG. 4.3 is a logic control flow chart of the sand and mud removal control module in embodiment 1 of the present invention;

FIG. 5.1 is a schematic view of a conventional centrifugal separation module of the present invention;

FIG. 5.2A is a schematic view of a centrifugal separation module with a hub in example 1 of the present invention;

FIG. 5.2B is a schematic view of a centrifugal separation module without a hub according to example 1 of the present invention;

FIG. 5.3 is a logic control flow chart of the centrifugal separation control module in embodiment 1 of the present invention;

FIG. 6.1 is a schematic view of a conventional charging module of the present invention;

FIG. 6.2A is a schematic view of a charging module with a hub in example 1 of the present invention;

FIG. 6.2B is a schematic view of a charging module without a hub according to example 1 of the present invention;

fig. 6.3 is a logic control flow chart of the feeding control module in embodiment 1 of the present invention;

FIG. 7.1 is a schematic view of a conventional slurry-transferring module of the present invention;

FIG. 7.2A is a schematic view of a slurry transferring module with a hub in embodiment 1 of the present invention;

FIG. 7.2B is a schematic view of a rotor plate module without a hub according to embodiment 1 of the present invention;

FIG. 7.3 is a logic control flow chart of the slurry control module in embodiment 1 of the present invention;

FIG. 8.1 is a block diagram of a conventional solid control system according to the present invention;

FIG. 9 shows an unmanned intelligent solid phase control system in example 1 of the present invention.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.

Example 1

In the solid control system, various equipment start/stop and valve on/off control are controlled automatically in a remote mode or manually in a remote mode, and local manual control is reserved.

Each sub-process of the solid control system comprises a supply process, a screening process, a degassing process, a desanding and desilting process, a centrifugal separation process, a feeding and mixing process, a slurry rotating process, a drilling fluid stirring process, a pollution discharge process, a drilling fluid pump filling process, a drilling chip collecting and processing process and the like, and a vibrating screen cloth periodic replacement prompt, a motor, a reduction gearbox, a bearing lubrication prompt, an alarm, an equipment failure alarm and the like which are all integrated into the unmanned intelligent solid phase control system so as to realize the remote automatic control of the solid control system, and the unmanned intelligent solid phase control system mainly comprises a solid control module, a host control module and each sub-module. The solid control module comprises a central processing unit and all sub-control modules (a supply control module, a screening control module, a degassing control module, a sand and mud removing control module, a centrifugal separation control module, a feeding control module and a slurry rotating control module), and all the sub-control modules realize the automatic control of the flow under the control of the central processing unit.

Drilling fluid characteristics such as drilling fluid liquid level, pressure, density, flow, gas content, sand content, viscosity and the like in the solid control system are detected by corresponding automatic detection facilities and input into a central processing unit through a control port by a sensor. The communication connection is established between the host control module and the central processing unit, and the host control module is used for monitoring the working state of each module and controlling each module through the central processing unit.

The solid control module comprises a central processing unit of an unmanned intelligent solid control system, and the solid control module controls the operation of each sub-module (a supply module, a screening module, a degassing module, a sand and mud removing module, a centrifugal separation module, a feeding module and a slurry rotating module) under the monitoring of the host control module, so that the automatic operation or stop of each functional module is realized. Or manually selecting the sub-modules to run or stop.

The main machine control module is in communication connection with the solid control module, the central processing unit obtains the drilling working condition from the main machine control module, obtains the data (including the detected drilling fluid characteristics) collected by the sensors from each sub-module, and starts the corresponding sub-control module according to the drilling working condition and each data.

A replenishment process:

the supply flow includes supply control module and supply module, and supply control module is according to rig tripping, the state of drilling down, and the start of the replenishment pump in the control supply module is opened and the valve in the supply module is opened or is closed, still according to liquid level height in the supply storehouse, whether control well head overflow direction or control commentaries on classics thick liquid pump change thick liquid to the supply storehouse, and concrete step includes:

when the liquid level of the replenishment bin is higher than the highest liquid level threshold value, the central processing unit starts the replenishment process, stops the slurry transferring process, and simultaneously closes the valve of the wellhead overflowing to the replenishment bin and opens the valve of the shunt box to prevent the liquid level of the replenishment bin from continuously rising.

Specifically, the replenishment module is shown in fig. 1.2B, and comprises a replenishment pipeline, a replenishment pump P-02, liquid inlet valves 4-01 and 6-01, a liquid outlet valve 3-01, a replenishment bin T-02, a liquid level meter with a liquid level sensor LT-02 and a pressure gauge PT-01 with a pressure sensor, wherein the replenishment pump P-02, the liquid inlet valve 4-01, the liquid outlet valve 3-01, the liquid level sensor LT-02 and the pressure gauge PT-01 are all provided with control ports and are connected with the central processing unit and the replenishment control module through the control ports, and the central processing unit controls the replenishment control module to operate according to signals transmitted by the control ports or the host control module. The effect of the replenishment process is that when the drill string is lifted, the replenishment pump P-02 sucks in the drilling fluid in the replenishment bin T-02 and delivers the drilling fluid into the wellbore through the replenishment line. As shown in fig. 1.2A, in the replenishment module with a hub, in the replenishment control module, when the arrangement of cables is complicated, the hub is selected to collect the cables. For example, there are 5 cables in the replenishment control module, and 5 cables are collected into one cable from the hub, so that the arrangement and management are convenient, and meanwhile, the hub may not be used, and 5 cables are directly connected with the central processing unit, and the schematic diagram of the replenishment module without the hub is shown in fig. 1.2B.

The replenishment process adopts an automatic valve and a pressure gauge with a sensor, and a liquid level meter with a liquid level sensor LT-02 is added in the replenishment bin. The replenishment control module opens the liquid inlet valve 4-01 and the liquid outlet valve 3-01 according to the instruction of the central processing unit, starts the replenishment pump P-02 and outputs the replenishment effect according to the pressure value of the pressure gauge PT-01 read by the central processing unit. During replenishment, if the liquid level sensor LT-02 detects that the liquid level of the replenishment bin is too low, a slurry rotating process (figure 7.2B) is started or a liquid inlet valve 6-01 is opened. If there is a fault, the system will alarm. When a plurality of replenishing pumps P-02 and replenishing bins T-02 are arranged, 1 replenishing pump P-02, 1 replenishing bin T-02 and corresponding valve lines are automatically selected by the replenishing control module to realize the replenishing function. Fig. 1.3 is a replenishment flow chart, which comprises the following steps: step one, a central processing unit obtains supply parameters; step two, comparing the replenishment parameters with the conditions for starting the replenishment process, judging whether to start the replenishment process according to the comparison result, returning to the step one if not, and entering the step one if so; comparing the liquid level value of the replenishment bin with a preset liquid level threshold value to judge whether the slurry needs to be transferred, if not, performing the next step, and if so, entering the sixth step; fourthly, opening a liquid inlet valve 4-01 and a liquid outlet valve 3-01; fifthly, starting a replenishing pump, and enabling the drilling fluid in the replenishing bin to enter a shaft; and sixthly, transferring the drilling fluid to a replenishment bin, and returning to the first step after replenishment is finished. And the slurry transferring in the sixth step has two ways, wherein the first way is to start the slurry transferring process, and the second way is to open the liquid inlet valve 6-01 to transfer the drilling fluid in the shaft to the replenishment bin.

And (3) screening process:

the screening process comprises a screening control module and a screening module, wherein the screening module comprises an overflow pipe, a flow sensor FT-01 arranged on the overflow pipe, a flow distribution box, a vibrating screen (S-01, S-02 and S-03), a sand settling bin C-01, a communication valve (10-01, 10-02 and 10-04) between the flow distribution box and the vibrating screen, a communication valve 10-05 between the flow distribution box and the sand settling bin C-01 and a communication valve 10-03 outside the flow distribution box and the sand settling bin C-01; the flow sensor FT-01, the vibrating screens (S-01, S-02 and S-03) and the communicating valves (10-01, 10-02, 10-03, 10-04 and 10-05) are all provided with control ports and are respectively connected with the central processor and the screening control module through the control ports, and the central processor controls the operation of the screening control module according to signals transmitted by the control ports or the host control module. The screening process has the function of separating the liquid phase and the solid phase in the drilling fluid returned to the solid control system from the wellhead overflow pipe, so that the drilling fluid flows into the sand settling bin C-01, and the harmful solid phase is discharged out of the tank.

The communication valves (10-01, 10-02, 10-03, 10-04 and 10-05) adopt automatic valves, a flow sensor FT-01 is added on an overflow pipe of a wellhead, and as shown in a schematic diagram of a screening module with a concentrator shown in figure 2.2A, the concentrator is selected to be used for collecting cables under the condition that more cables are arranged in the screening control module and the arrangement is more complicated. For example, there are 8 cables in the screening control module, and the 8 cables are collected into one cable from the hub, so that the arrangement and management are convenient, and meanwhile, the hub is not needed, the 8 cables are directly connected with the central processing unit, and the schematic diagram of the screening module without the hub is shown in fig. 2.2B. The flow sensor FT-01 on the overflow pipe transmits the real-time flow to the central processing unit. When the drilling machine drills, the central processing unit can control the screening control module to instruct one or more vibrating screens to be started/stopped and corresponding communication valves (10-01, 10-02, 10-03, 10-04 and 10-05) to be opened/closed according to screening parameters (the flow of drilling fluid flowing into the shunt box and/or the drilling machine working condition transmitted by the host control module, which are monitored by the flow sensor FT-01), and the larger the flow is, the more the number of the vibrating screens is started. The whole screening process realizes unmanned control. If the communication valve is in failure, the system will give an alarm in the processes of opening and closing, starting and stopping the equipment and running. Fig. 2.3 is a screening flow chart, and the steps are as follows: firstly, a winning processor acquires screening parameters; secondly, judging whether to start a screening control module according to the screening parameters; if not, returning to the first step, otherwise, executing the third step; thirdly, selecting and starting a vibrating screen according to the flow; fourthly, opening a communicating valve between the flow dividing box and the started vibrating screen; fifthly, screening the drilling fluid by a vibrating screen; sixthly, when the pulp running condition is detected, automatically adjusting the inclination angle of the vibrating screen according to the requirement until no pulp runs; and seventhly, finishing the separation of a liquid phase and a solid phase in the drilling fluid.

Degassing process:

the degassing process comprises a degassing control module and a degassing module, wherein the degassing module comprises a degasser, a degassing liquid supply pump P-04, a jet pipe, a first degassing bin C-02 provided with a gas detector QT-01, a second degassing bin C-03, a liquid inlet valve 8-02, a liquid outlet valve 6-03 and a pressure gauge PT-03 provided with a pressure sensor.

When the degassing control module is started to carry out degassing on the degassing module, an automatic valve is adopted, and a gas detector QT-01 is added to a degassing bin C-02 as shown in figure 3.2B. The degassing module comprises a degasser, a degassing liquid supply pump P-04, a gas detector QT-01, a degassing liquid supply pump P-04, a liquid inlet valve 8-02, a liquid outlet valve 6-03 and a pressure sensor PT-03, which are all provided with control ports and are respectively connected with the central processing unit and the degassing control module through the control ports. And transmitting the real-time gas content to a central processing unit by a gas detector QT-01. In the drilling fluid circulation process, the central processing unit obtains the drilling fluid gas content and the host drilling machine working condition which are automatically and circularly detected by the gas detector QT-01 in real time. And the central processing unit compares the working condition of the host drilling machine and the air content detection value with a preset program threshold value to judge whether the degassing process needs to be started or not. When the degassing process needs to be started, the central processing unit starts the degassing control module, and the degassing control module starts valves and equipment in the degassing module according to preset logic and feeds back and displays starting results. When the detection value is lower than the stop value, the degassing control module instructs the flow stop and closes the related equipment and the valve in a reverse order. If there is a fault, the system will alarm. In this way, the degassing process is unmanned.

As shown in fig. 3.2A, the degassing module with a hub is a schematic diagram of a degassing control module, in which the cables are more complicated to arrange, the hub is selected to be used for collecting the cables. For example, 7 cables are arranged in the degassing control module, and the 7 cables are integrated into one cable from the hub, so that the arrangement and management are convenient, meanwhile, the hub is not needed, the 7 cables are directly connected with the central processing unit, and the schematic diagram of the degassing module without the hub is shown in fig. 3.2B.

FIG. 3.3 is a degassing flow chart, comprising the following steps: step one, a central processing unit obtains degassing parameters; secondly, comparing the degassing parameters with a preset threshold value; thirdly, judging whether to start a degassing control module, if not, returning to the first step, and if so, executing the fourth step; fourthly, opening the deaerator; fifthly, opening a liquid inlet valve and a liquid outlet valve; sixthly, starting a degassing liquid supply pump; seventhly, separating gas in the drilling fluid from the drilling fluid; and step eight, discharging the gas out of the tank, and enabling the drilling fluid to flow into the degassing bin II.

Sand and mud removing process:

the sand and mud removing process comprises a sand and mud removing control module and a sand and mud removing module, wherein the sand and mud removing module comprises a cleaner MC-01, a sand removing bin C-04, a mud removing bin C-05, a centrifugal separation bin C-06, a sand removing liquid supply pump P-05, a mud removing liquid supply pump P-06, a liquid inlet valve (8-03 and 8-04), a liquid outlet valve (6-04, 6-05 and 6-08), a sand content measuring instrument SM-01 and a liquid level meter LT04 which are installed on the sand removing bin C-04, a sand content measuring instrument SM-02 liquid level meter LT05 and a pipeline thereof which are installed on the mud removing bin C-05, liquid level sensors are arranged on the liquid level meters (LT 04 and LT 05), and the sand and mud removing module is used for automatically removing sand and mud. The cleaner MC-01 comprises a sand removal cyclone, a mud removal cyclone and a sand removal mud remover vibrating screen.

FIG. 4.2B is a schematic diagram of a sand and mud removing module, as shown in FIG. 4.2B, all the valves are automatic valves, such as a cleaner MC-01, a sand removing liquid feed pump P-05, a mud removing liquid feed pump P-06, a liquid inlet valve (8-03, 8-04), a liquid outlet valve (6-04, 6-05, 6-08), a slurry rotating valve (6-07), a sand content measuring instrument SM-01, a level meter LT04, a sand content measuring instrument SM-02, and a level meter LT05, which are all provided with control ports and are respectively connected with a central processing unit and the sand and mud removing control module through the control ports, the central processing unit reads sand and mud removing parameters (detection values of a drilling machine working condition, a sand content detector and/or a level sensor) in real time, compares the mud removing parameters with a preset threshold value, and when the comparison result reaches a condition for starting the sand and mud removing control module, the central processing unit starts the sand and mud removal control module to execute a sand and mud removal process, starts the cleaner MC-01, opens the liquid inlet valves (8-03 and 8-04) and the liquid outlet valves (6-04 and 6-05 and 6-08), starts the mud removal liquid feed pump P-06, and when a slurry rotating condition is achieved, closes the cleaner MC-01, and opens the slurry rotating valve (6-07) to perform slurry rotating operation. If there is a fault, the system will alarm.

Fig. 4.2A is a schematic diagram of a desanding and desilting module with a concentrator, and the desanding and desilting module selects to use the concentrator to collect cables under the condition that more cables are arranged and the arrangement is complex. For example, there are 12 cables in the desanding and desilting module, and the 12 cables are gathered into one cable from the concentrator, so that the arrangement and management are convenient, meanwhile, the concentrator is not needed, the 12 cables are directly connected with the central processing unit, and the schematic diagram of the desanding and desilting module without the concentrator is shown in fig. 4.2B.

It is worth noting that the desilting process is carried out simultaneously with the desanding process, the desanding drilling fluid flows into the desilting bin, the desilting drilling fluid flows into the centrifugal separation bin-C-06, and when the desanding and the desilting are not needed, the slurry rotating valve (6-07) is opened, and the drilling fluid in the desanding bin is directly rotated into the centrifugal separation bin-C-06.

The sand and mud removal can also be controlled according to 60-90% of the drilling time, and the sand and mud removal is started if 80% of the drilling time is set. No matter the sand content of the drilling fluid or the drilling time is used for sand and mud removal, the automatic sand and mud removal can be realized by changing control parameters. FIG. 4.3 is a flow chart of sand and mud removal, comprising the following steps: firstly, a central processing unit obtains parameters of sand and mud removal; secondly, comparing the sand and mud removing parameters with a preset threshold value; thirdly, judging whether a sand and mud removing control module is started or not, if not, returning to the first step, and if so, executing the fourth step; fourthly, opening a liquid inlet valve and a liquid outlet valve of the desanding liquid supply pump; fifthly, removing sand, or transferring slurry or removing mud according to the liquid level value and the sand content of the sand removing bin and the liquid level value of the mud removing bin; and sixthly, separating sand and mud from the drilling fluid and discharging the sand and mud out of the first centrifugal separation bin, wherein the drilling fluid flows into the first centrifugal separation bin.

Centrifugal separation process:

the centrifugal separation process comprises a centrifugal separation control module and a centrifugal separation module, wherein the centrifugal separation module comprises a centrifugal separation bin I C-06, a centrifugal separation bin II C-08, a density detector DM-01 arranged on the centrifugal separation bin I C-06, a liquid inlet valve 5-01, a liquid outlet valve 6-18, a centrifugal machine and a centrifugal machine liquid supply pump SP-01; and the centrifugal separation control module controls a centrifugal machine in the centrifugal separation module to remove finer solid particles in the drilling fluid.

When the centrifugal separation control module controls the centrifugal separation module to perform centrifugal separation, all valves used in the process are automatic valves, a density detector DM-01 is added in a centrifuge bin, fig. 5.2B is a schematic diagram of the centrifugal separation module, and as shown in fig. 5.2B, the density detector DM-01, the liquid inlet valve 5-01, the liquid outlet valve 6-18, the centrifuge and the centrifuge liquid supply pump SP-01 are all provided with control ports and are respectively connected with the central processing unit and the centrifugal separation control module through the control ports. The central processor reads the sand content value (centrifugal separation parameter) of the centrifugal separation bin C-06 in real time through the density detector DM-01, compares the sand content value with a centrifugal separation threshold value preset by a program, judges whether to start a centrifugal separation process according to a comparison result, starts a centrifugal separation control module if the centrifugal separation process needs to be started, and controls the centrifugal separation module to carry out centrifugal separation operation through the centrifugal separation control module, so that automatic control of the centrifugal separation process is realized. If there is a fault, the system will alarm.

Fig. 5.2A is a schematic diagram of a centrifugal separation module with a hub, and the centrifugal separation module selects to use the hub to collect cables in the case of more complicated cable arrangement. For example, there are 5 cables in the centrifugal separation module, and 5 cables are collected into one cable from the hub, so that the arrangement and management are convenient, and meanwhile, the hub is not needed, the 5 cables are directly connected with the central processing unit, and the schematic diagram of the centrifugal separation module without the hub is shown in fig. 5.2B.

FIG. 5.3 is a flow chart of centrifugal separation, which is: the first step, the central processing unit obtains centrifugal separation parameters through a control port; secondly, comparing the centrifugal separation parameter with a centrifugal separation threshold value; thirdly, judging whether a centrifugal separation control module is started or not, if not, returning to the first step, and if so, entering the next step; fourthly, the centrifugal separation control module opens a centrifugal machine liquid supply pump SP-01, a liquid inlet valve and a liquid outlet valve; fifthly, opening the centrifuge; sixthly, starting a centrifuge liquid supply pump; seventhly, separating solid particles from the drilling fluid; and in the sixth step, the solid particles are discharged out of the first centrifugal separation bin C-06, and the drilling fluid flows into the second centrifugal separation bin C-08.

A charging process:

the feeding process comprises a feeding control module and a feeding module, wherein the feeding module comprises a mixing pump P-08, a mass sensor MA-01, a density sensor DM-04, a pipeline pressure gauge PT-07, a pressure sensor arranged on the pipeline pressure gauge PT-07, a liquid inlet valve 8-07, an air inlet valve 4-13, a discharge valve 4-09, a liquid outlet valve 6-16, a feeding bin C-09, a hopper H-02 and an ash tank 1; wherein the mixing pump P-08, the mass sensor MA-01, the density sensor DM-04, the pressure sensor, the liquid inlet valve 8-07, the gas inlet valve 4-13, the powder outlet valve 4-09 and the liquid outlet valve 6-16 are all provided with control ports and are respectively connected with the central processing unit and the charging control module through the control ports, and each valve adopts an automatic valve. Each mixing pump P-08, the mass sensor MA-01, the density sensor DM-04, the pipeline pressure gauge PT-07, the pressure sensor arranged on the pipeline pressure gauge PT-07, the liquid inlet valve 8-07, the gas inlet valve 4-13, the discharge valve 4-09, the liquid outlet valve 6-16, the feeding bin C-09, the hopper H-02 and the ash tank 1 form a set of feeding pipeline. In other embodiments, the feeding module comprises a plurality of sets of feeding pipelines, one feeding bin can be used for one set of feeding pipeline, and the feeding bins can be shared by a plurality of sets of feeding pipelines. Fig. 6.2B is a schematic view of a charging module, as shown in fig. 6.2B, using compressed air as the motive force to compress the material in the ash can into the charging conduit and advance the hopper. And the central processing unit judges whether to feed according to the comparison of feeding parameters such as the drilling depth and/or the drilling fluid density and/or the drilling fluid quality and/or the drilling fluid viscosity and/or the drilling fluid pH value and the like with a preset feeding threshold value. That is, the mud density can be taken as an example for judgment, the concrete steps of feeding and mixing materials are realized, and the circulation can be carried out for multiple times, wherein the judgment of whether to feed is carried out by taking any one parameter of the drilling depth, the drilling fluid density, the drilling fluid quality, the drilling fluid viscosity and the drilling fluid pH value as a reference. When the feeding parameters are lower than the preset feeding threshold value, the liquid inlet valve 8-07 and the liquid outlet valve 6-16 are opened, the pump P-08 is started, and when the pipeline pressure sensor PT-07 senses that the pipeline pressure is greater than the preset feeding threshold value, the ash tank discharge valve 4-09 and the air inlet valve 4-13 are opened to feed. The mass sensor MA-01 automatically calculates the weight of the added material until the feeding is completed. If there is a fault, the system will alarm.

Figure 6.2A is a schematic view of a loading module with a hub, which is selected for use in collecting cables in situations where the arrangement of cables is more complex. For example, there are 8 cables in the feeding module, and the 8 cables are collected into one cable from the hub, so that the arrangement and management are convenient, and meanwhile, the hub is not needed, the 8 cables are directly connected with the central processing unit, and the schematic view of the feeding module without the hub is shown in fig. 6.2B.

FIG. 6.3 is a feeding flow chart, which comprises the following steps: firstly, a central processing unit acquires charging parameters from a control port and/or a host control module; secondly, comparing the feeding parameters with a preset feeding threshold value; thirdly, judging whether to start the charging control module according to the comparison result, if not, returning to the first step, and if so, entering the next step; fourthly, selecting and starting a corresponding mixing pump, a liquid inlet valve and a liquid outlet valve to realize the circular flow of the drilling fluid in the feeding pipeline, wherein the feeding pipeline generates pressure; fifthly, when the pipeline pressure is greater than a preset charging threshold value, a discharge valve and an air inlet valve of the ash tank are opened; sixthly, measuring the weight of the added material by a mass sensor MA-01; and step seven, finishing feeding and cleaning pipelines.

A slurry rotating process:

the slurry transferring flow comprises a slurry transferring control module and a slurry transferring module, the slurry transferring module comprises a slurry transferring pump P-03, a liquid inlet valve 8-01, a liquid outlet valve 6-02, a communicating valve 3-05, a first slurry transferring bin C-03, a second slurry transferring bin C-04 and a liquid level meter LT-04 arranged on the second slurry transferring bin C-04, the liquid level meter 1T-04 is provided with a liquid level sensor, all the valves adopt automatic valves, the slurry transferring is realized by controlling the slurry transferring pump P-03, the liquid inlet valve 8-01, the liquid outlet valve 6-02 and the like in the slurry transferring module by the slurry transferring control module, figure 7.2B is a schematic diagram of the slurry transferring module, the slurry transferring pump P-03, the liquid inlet valve 8-01, the liquid outlet valve 6-02, the communicating valve 3-05 and the liquid level sensor are provided with control ports and are respectively connected with a central processing unit and the slurry transferring control module through the control ports, when the slurry is transferred, the central processing unit obtains the slurry transfer parameters such as the liquid level value and the working condition of the drilling machine through the control port and/or the host control module, compares the slurry transfer parameters with the slurry transfer threshold value preset by a program, starts the slurry transfer control module when the slurry transfer requirement is met, and controls the slurry transfer module to transfer the slurry, so that the slurry transfer automation is realized. If there is a fault, the system will alarm.

Fig. 7.2A is a schematic diagram of a slurry module with a concentrator, and the slurry module selects to use the concentrator to collect cables in the case of more complicated cable arrangement. For example, there are 5 cables in the slurry conversion module, and 5 cables are collected into one cable from the hub, so that the arrangement and management are convenient, and meanwhile, the hub is not needed, the 5 cables are directly connected with the central processing unit, and the schematic diagram of the slurry conversion module without the hub is shown in fig. 7.2B.

FIG. 7.3 is a flow chart of the slurry transferring, which includes the following steps: the first step, the central processor obtains the liquid level information of a second rotary slurry cabin C-04 and rotary slurry parameters such as the working condition of a drilling machine and the like from a control port and/or a host control module; secondly, comparing the slurry transferring parameter with a slurry transferring threshold value; thirdly, judging whether to start the slurry rotation control module according to the comparison result, if not, returning to the first step, and if so, entering the next step; fourthly, starting a slurry rotating pump P-03, a liquid inlet valve 8-01 and a liquid outlet valve 6-02; thirdly, starting a slurry transferring pump; fourthly, the drilling fluid flows into the second slurry rotating bin C-04 from the first slurry rotating bin C-03 to complete slurry rotation.

In order to supply drilling fluid when the supply bin T-02 needs to be supplied conveniently, a branch is arranged, a communicating valve 3-05 is arranged on the branch, when the supply bin T-02 needs to be supplied with drilling fluid, the communicating valve 3-05 is opened and closed for supply, and the drilling fluid flows into the supply bin T-02 from the first rotary bin C-03.

Obviously, the solid control system includes, but is not limited to, the foregoing sub-control modules and sub-modules, and in practical applications, other sub-control modules and sub-modules may also be involved, such as sub-control modules and sub-modules of stirring equipment, a drilling fluid pump priming system, drill cuttings collection, drying, transportation, drilling fluid pollution discharge treatment, and the like, and the above control manner is also adopted to achieve the purpose of automatic control.

A solid control system:

fig. 9 is a diagram of a solid control system, which includes a host control module, a solid control module and each sub-module (replenishment module, screening module, degassing module, sand and mud removing module, centrifugal separation module, charging module and slurry rotating module), different from the conventional solid control system, all valves adopt electric or pneumatic valves, the electric or pneumatic valves are provided with control ports, the control ports are connected with the solid control module, each drilling fluid parameter adopts automatic detection equipment, and the solid control module realizes the automatic control of the solid control system according to the drilling working condition and the drilling fluid parameter.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included therein.

Claims

1. An unmanned intelligent solid-phase control system comprises a supply module, a screening module, a degassing module, a desanding and desilting module, a centrifugal separation module, a feeding module and a slurry transferring module, and is characterized in that sensors are arranged in the supply module, the screening module, the degassing module, the desanding and desilting module, the centrifugal separation module, the feeding module and the slurry transferring module, and control ports are arranged in each of the supply module, the screening module, the degassing module, the desanding and desilting module, the centrifugal separation module, the feeding module and the slurry transferring module;

the system also comprises a host control module and a solid control module;

2. The unmanned, intelligent, solid-phase control system of claim 1, wherein the replenishment control module, the sizing control module, the degassing control module, the desanding and desliming control module, the centrifugation control module, the charging control module, and the slurry control module are all integrated into the central processor.

3. An unmanned intelligent solid phase control system according to claim 1 or 2, wherein the replenishment control module controls start and stop of a replenishment pump in the replenishment module and opening or closing of a valve in the replenishment module according to the state of tripping and tripping of the drilling machine, and controls the overflow direction of a wellhead or controls whether a slurry pump is rotated to the replenishment bin according to the height of the liquid level in the replenishment bin, and the method comprises the following specific steps:

4. The unmanned intelligent solid phase control system of claim 1 or 2, wherein the screening control module starts or stops the operation of the vibrating screen according to the flow rate of the overflow of the wellhead into the diversion box, controls the opening or closing of a valve in the screening module, and controls the inclination angle of the vibrating screen according to the slurry running of the vibrating screen, and the specific steps comprise:

in the process of drilling down and drilling,

5. The unmanned and intelligent solid-phase control system according to claim 1 or 2, wherein the degassing control module controls start and stop of the degasser and the degassing liquid feed pump according to a comparison between a detected value of gas content in the drilling fluid and a preset value of a program, and controls a valve in the degassing module to open or close, and specifically comprises the following steps:

detecting the gas content in the drilling fluid in the drilling process;

6. The unmanned and intelligent solid phase control system as claimed in claim 1 or 2, wherein the desanding and desilting control module controls the desander to realize a desanding function and controls the desilter to realize a desilting function, comprising the following steps:

detecting the liquid level value of the desanding bin in the drilling process;

7. The unmanned intelligent solid phase control system of claim 6, wherein the sand and mud removal process control module is configured to remove sand and mud for 60-90% of the drilling time when the sand and mud removal process control module performs the sand and mud removal function.

8. The unmanned and intelligent solid-phase control system according to claim 1 or 2, wherein the centrifugal separation control module controls the centrifuge and the centrifuge liquid feed pump to be started or stopped and controls a valve in the centrifugal separation module to be opened or closed according to the density of the drilling fluid and/or the viscosity of the drilling fluid and/or the sand content and/or the running time of the centrifuge, so as to realize the separation of the liquid phase and the solid phase of the drilling fluid and achieve the purpose of changing the density of the drilling fluid and/or the viscosity and/or the sand content of the drilling fluid, and specifically comprises the following steps:

9. The system of claim 8, wherein the centrifugation process control module performs centrifugation further comprising: the opening and closing of the centrifuge are controlled according to the drilling time length, and the opening time of the centrifuge is 50-90% of the drilling time.

10. The unmanned intelligent solid-phase control system of claim 1 or 2, wherein the feeding control module controls the opening or closing of a mixing device and a valve in the feeding module according to the drilling depth and/or the drilling fluid density and/or the drilling fluid viscosity and/or the drilling fluid pH value, and materials in different ash tanks are fed into a mixing hopper to realize automatic feeding, and the method specifically comprises the following steps:

s61, obtaining the feeding parameters of the suction tank;

11. The unmanned and intelligent solid-phase control system of claim 1 or 2, wherein the slurry transfer flow control module controls the start and stop of a slurry transfer pump and the opening or closing of a valve on a slurry transfer flow line according to a level value of a slurry transfer bin, and the concrete steps of implementing slurry transfer comprise:

s71, reading the two-level value of the slurry transferring bin;

12. The unmanned intelligent solid phase control system of claim 11, wherein the slurry transfer module is provided with a branch communicated with the supply bin, and a communication valve is arranged on the branch.