CN115492749A - Method for preventing pump from being held back in starting process of drilling pump in petroleum drilling engineering - Google Patents
Method for preventing pump from being held back in starting process of drilling pump in petroleum drilling engineering Download PDFInfo
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- CN115492749A CN115492749A CN202211185913.6A CN202211185913A CN115492749A CN 115492749 A CN115492749 A CN 115492749A CN 202211185913 A CN202211185913 A CN 202211185913A CN 115492749 A CN115492749 A CN 115492749A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
Abstract
The invention relates to a method for preventing a pump from being held back in the starting process of a drilling pump in petroleum drilling engineering. When the controller judges that the pump-holding condition possibly occurs, the drilling pump is stopped to be started, and the process is as follows: 1) Acquiring the rotating speed R of the drilling pump in real time; 2) Collecting the flow rate S or pressure LP of slurry in a high-pressure pipeline in real time; 3) Setting the flow rate of mud in a high-pressure pipeline as s or lp when the normal starting of the drilling pump and the running speed of the drilling pump are r; (1) If R is larger than or equal to R and S is larger than or equal to S or LP is larger than or equal to LP, the high-pressure valve of the drilling pump is judged to be in an open state, and the pump cannot be blocked; (2) And if R is larger than or equal to R and S is smaller than S or LP is smaller than LP, judging that a high-pressure valve of the drilling pump is in a closed state, predicting that the pump is blocked, and stopping starting the drilling pump. The method has the advantages of simple implementation process and high reaction speed, can effectively prevent the misoperation of the drilling pump, timely and accurately realize the safety protection of the pumping pressure, and prevents and avoids the occurrence of pump blocking accidents.
Description
Technical Field
The invention relates to a safety control technology of petroleum drilling engineering, in particular to a pump pressure protection method for preventing the misoperations of a drilling pump, monitoring, judging whether the drilling pump has a pump holding function or not and performing prevention treatment in the petroleum drilling engineering.
Background
In the petroleum drilling engineering, in order to prevent the drilling pump from being started under the closing state of a high-pressure valve, thereby causing the accident of extremely suffocating the pump (commonly called suffocating the pump), necessary pump pressure protection measures are carried out, and the method is an effective safety protection means. However, in order to perform production safely and orderly, the premise of performing accurate and timely pumping pressure protection is to accurately and timely judge whether a pump is held back. The monitoring and judging method is accurate, efficient and timely, and the timely, efficient and safe pumping pressure protection system is directly concerned.
There are many methods for monitoring whether the drilling pump is blocked, and the most safe and efficient method is the most safe and efficient method, so that the accurate and timely judgment can be accurately and timely achieved by the simplest process method with the lowest cost, which is about the safety of the lives and properties of the group and the individuals, and therefore continuous exploration is necessary to achieve the purpose that the safety protection is time-consuming and the potential safety hazard is eliminated.
The invention patent (patent number 201811049380.2) proposed by the applicant in the past provides a method for preventing the misoperation of a drilling pump in the petroleum drilling engineering, wherein a pressure sensor is respectively arranged on the drilling pump and a vertical pipe, and whether the misoperation of the drilling pump occurs is judged by comparing the difference value of the pressure of the vertical pipe and the pressure of the drilling pump. However, in practical applications, the fluid pressure can reach a certain value due to the fluid accumulation in the pipe to a certain extent, and the process takes time. Therefore, whether the condition of the pump is blocked is judged by comparing the change of the pressure of the vertical pipe and the pressure of the drilling pump, the required reaction time is longer, and the accident prevention at the first time is not facilitated.
Therefore, the applicant conducts research and exploration attempts of various technical ideas, and only one purpose is to timely and accurately realize the safety protection of the pumping pressure and practically protect the life and property safety of people.
Disclosure of Invention
The invention provides a method for preventing a drilling pump from being held back for timely and accurately realizing safety protection of a pumping pressure.
The technical scheme adopted by the invention is as follows:
a method for preventing pump holding-up in the starting process of a drilling pump in petroleum drilling engineering stops starting the drilling pump when the situation that the pump holding-up is possible is judged, and the process executed by a controller is as follows:
1) Acquiring the rotating speed R of the drilling pump in real time;
2) Collecting the flow speed S of slurry in a high-pressure pipeline in real time;
3) Setting the flow rate of slurry in a high-pressure pipeline as s when the drilling pump is normally started and the running speed of the drilling pump is r;
(1) If R is larger than or equal to R and S is larger than or equal to S, judging that a high-pressure valve of the drilling pump is in an open state, and normally starting the drilling pump without the occurrence of a pump blocking condition;
(2) And if R is larger than or equal to R and S is smaller than S, judging that a high-pressure valve of the drilling pump is in a closed state, predicting that the pump is blocked, and stopping starting the drilling pump.
A method for preventing a pump from being held back in the starting process of a drilling pump in petroleum drilling engineering is executed by a controller, and when the situation that the pump is possibly held back is judged, the drilling pump is stopped to be started, and the process is as follows:
1) Acquiring the rotation R of the drilling pump in real time;
2) Collecting the slurry pressure LP in the vertical pipe in real time;
3) Setting the mud pressure in the vertical pipe to be lp when the operating speed of the drilling pump is r when the drilling pump is normally started;
(1) If R is larger than or equal to R and LP is larger than or equal to LP, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be blocked, and the drilling pump can be started;
(2) And if R is larger than or equal to R and LP is smaller than LP, judging that a high-pressure valve of the drilling pump is in a closed state, and stopping starting the drilling pump when the pump is blocked.
A method for preventing a pump from being held back in the starting process of a drilling pump in petroleum drilling engineering is executed by a controller, and when the situation that the pump is possibly held back is judged, the drilling pump is stopped to be started, and the process is as follows:
1) Collecting the flow speed S of slurry in a high-pressure pipeline in real time;
2) Acquiring a given voltage control signal V of the electric drilling pump in real time;
3) Setting the flow rate of mud in a high-pressure pipeline as s and a given voltage control signal v of the drilling pump when the electric drilling pump is normally started;
(1) If V is larger than or equal to V and S is larger than or equal to S, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be blocked, and the drilling pump can be started;
(2) And if V is more than or equal to V and S is less than S, judging that a high-pressure valve of the drilling pump is in a closed state, and stopping starting the drilling pump when the pump is blocked.
A method for preventing a pump from being held back in the starting process of a drilling pump in petroleum drilling engineering is executed by a controller, and when the situation that the pump is possibly held back is judged, the drilling pump is stopped to be started, and the process is as follows:
1) Collecting the slurry pressure LP in the vertical pipe in real time;
2) Acquiring a given voltage control signal V of the electric drilling pump;
3) Setting the mud pressure in the vertical pipe to be lp and setting a given voltage control signal v of the drilling pump when the electric drilling pump is normally started;
(1) If V is larger than or equal to V and LP is larger than or equal to LP, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be blocked, and the drilling pump can be started;
(2) And if the V is more than or equal to the V and the LP is less than LP, judging that a high-pressure valve of the drilling pump is in a closed state, and stopping starting the drilling pump when the pump is blocked.
A method for preventing a pump from being held back in the starting process of a drilling pump in petroleum drilling engineering is executed by a controller, and when the situation that the pump is possibly held back is judged to occur, the process of stopping starting the drilling pump is as follows:
1) Collecting the mud pressure BP of the drilling pump in real time;
2) Collecting the flow speed S of slurry in a high-pressure pipeline in real time;
3) Setting the flow rate of the slurry in a high-pressure pipeline as s when the slurry pressure of the drilling pump is bp and the normal starting of the drilling pump is carried out;
(1) If the BP is more than or equal to the BP and the S is more than or equal to the S, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be held back, and the drilling pump can be normally started;
(2) If the BP is larger than or equal to BP and S is smaller than S, the high-pressure valve of the drilling pump is judged to be in a closed state, the pump is blocked, and the drilling pump is stopped.
According to the method for preventing the borehole pump from being held, the flow rate sensor arranged on a pipeline at the downstream of the high-pressure valve can be a flow rate sensor in contact with the measured fluid or a flow rate sensor in non-contact with the measured fluid.
According to the method for preventing the well drilling pump from being blocked in the starting process of the petroleum well drilling engineering well drilling pump, for a mechanical well drilling pump (pumping pressure protection system), a normally open electromagnetic valve is connected to a starting and stopping control gas circuit of the well drilling pump in series and is controlled by a controller, when the controller judges that a high pressure valve of the well drilling pump is in a closed state, and the situation that the pump is blocked occurs, a control instruction is sent to open a normally closed pneumatic valve to release pressure, meanwhile, the normally open electromagnetic valve is closed, a control gas circuit of the well drilling pump is cut off, and the well drilling pump stops running.
According to the method for preventing the pump from being held back in the starting process of the drilling pump in the petroleum drilling engineering, for the electric drilling pump (pumping pressure protection system), a controller is connected with a start-stop control system intervening in the electric drilling pump, when the situation that the high-pressure valve of the drilling pump is in a closed state and the pump is held back is judged, the controller sends a control instruction to open a normally-closed pneumatic valve to release pressure, and meanwhile, the start-stop control system of the drilling pump receives a pump stopping instruction sent by the controller to stop the drilling pump.
The method for preventing the well drilling pump from being blocked comprises the steps of predicting and judging whether the situation of the well drilling pump is blocked or not in the starting process of the well drilling pump, installing a normally closed pneumatic valve on a low-pressure water return pipeline of the well drilling pump to serve as a low-pressure water return valve of the well drilling pump, controlling an executing mechanism for controlling the opening and closing of the normally closed pneumatic valve to be controlled by a controller, and sending a control instruction to stop starting the well drilling pump and simultaneously opening the normally closed pneumatic valve to release pressure when the controller judges that a high-pressure valve of the well drilling pump is in a closed state and the situation of the pump being blocked occurs.
The invention has the beneficial effects that:
1. the method for preventing the pump from being held back in the starting process of the drilling pump in the petroleum drilling engineering judges whether a high-pressure valve of the drilling pump is in an open state or not by monitoring the running speed of a belt pulley of the drilling pump and the flow rate of mud in a high-pressure pipeline of the drilling pump or/and a mud pressure signal in real time, and further judges whether the pump is held back or not. The realization process is simple, the reaction speed is high, and the portrayal is more visual. The misoperation of the drilling pump can be prevented, so that the accident of the pump being dead is effectively prevented and avoided.
2. According to the method for preventing the pump from being held back in the starting process of the drilling pump in the petroleum drilling engineering, whether the high-pressure valve of the drilling pump is in an open state or not is judged by monitoring the mud pressure signal at the water outlet of the electric drilling pump and the flow rate of mud in the high-pressure pipeline of the drilling pump in real time, and then whether the pump is held back or not is judged. The method has the advantages of simple implementation process and high reaction speed, and can prevent the misoperation of the drilling pump so as to effectively prevent and avoid the occurrence of pump blocking accidents.
3. The method for preventing the pump from being held back in the starting process of the drilling pump in the petroleum drilling engineering judges whether a high-pressure valve of the drilling pump is in an open state or not and whether the pump is held back or not by monitoring a given voltage control signal of the drilling pump and the flow rate or/and pressure signal of slurry in a high-pressure pipeline of the drilling pump in real time. Starting from a dangerous source, the gateway predicted and judged is moved forward, so that the method is high in speed, good in effect, timely and accurate, and low in implementation cost.
4. The method for preventing the pump from being held back in the starting process of the drilling pump in the petroleum drilling engineering is implemented without changing the hardware of the conventional pumping pressure protection system, does not increase the equipment cost, is easy to realize, ensures the safe production of petroleum drilling and has better social and economic benefits. In practical application, various judgment methods such as detection of the running speed of a belt pulley of the drilling pump, flow rate of slurry in a high-pressure pipeline of the drilling pump, acquisition of a given voltage control signal of the electric drilling pump and the like can be combined for use, and the accuracy rate is higher according to mutual evidence.
5. The invention relates to a method for preventing a pump from being held back in the starting process of a drilling pump in petroleum drilling engineering, which adopts an accurate and simple method to predict and judge whether the pump is held back in the starting process of the drilling pump, a normally closed pneumatic valve is arranged on a low-pressure water return pipeline of the drilling pump to be used as a low-pressure water return valve of the drilling pump, an actuating mechanism for controlling the opening and closing of the normally closed pneumatic valve is controlled by a controller, and when the controller judges that a high-pressure valve of the drilling pump is in a closed state and the pump is held back, a control instruction is sent to open the normally closed pneumatic valve for pressure relief. The misoperation of the drilling pump can be effectively prevented, and the accident of the pump being blocked is prevented and avoided.
Drawings
Fig. 1, fig. 3, fig. 5 and fig. 9 are schematic structural diagrams of a pumping pressure protection system of a mechanical borehole pump for preventing a pressure build-up pump;
FIG. 2, FIG. 4, FIG. 6, FIG. 7, FIG. 8 and FIG. 10 are schematic structural views of an electric drill pump pressure protection system;
in the figure, reference numeral 1 is a flow rate sensor; 2 is a high-pressure valve; 3 is a pump speed sensor; 4 is a low-pressure water return valve; 5 is an electromagnetic valve; 6 is a pump control switch; 7, setting a hand wheel; 8 is a riser pressure sensor; 9 is a pump pressure sensor; 10 is a normally closed pneumatic valve.
Detailed Description
The technical solution of the present invention is further described in detail below by means of specific embodiments and with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and fig. 2, the method for preventing pump holding in the starting process of the drilling pump in the oil drilling engineering of the invention comprises the following steps: a pump speed sensor for acquiring the running speed R of the drilling pump is arranged on the drilling pump, and a rotating speed signal is transmitted to a controller; a flow velocity sensor for collecting the flow velocity S of the slurry in the high-pressure pipeline is arranged on a pipeline at the downstream of the high-pressure valve, and a flow velocity signal is transmitted to a controller;
setting the flow rate of mud in a high-pressure pipeline as s when the drilling pump is normally started and the running speed of the drilling pump is r; when the drilling pump is started, the controller acquires the running speed of the drilling pump and the flow rate of slurry in a high-pressure pipeline in real time; calculating the running speed R of the drilling pump and the flow rate S of the slurry in the high-pressure pipeline in real time, comparing the running speed R of the drilling pump with the flow rate S of the slurry in the high-pressure pipeline in a normal starting state, and judging whether the drilling pump is in a pump holding state:
(1) If R is larger than or equal to R and S is larger than or equal to S, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be blocked, and the drilling pump can be started;
(2) If R is larger than or equal to R and S is smaller than S, the high-pressure valve of the drilling pump is judged to be in a closed state, the pump is blocked, and the drilling pump cannot be started.
From the logic relation, when the borehole pump is started, four elements R, r and S, s are used to judge whether the borehole pump has a pump holding condition, and besides the two logic combinations, the following two logic combinations are also provided, namely:
(3) If R is less than R, S is less than S or S =0, the drilling pump is judged to be in an idle state, and no danger exists under the condition;
(4) If R < R, but S ≧ S, it can basically be judged that the sensor is damaged or that the borehole pump is defective. Because in real life and production practice, the condition that the borehole pump fails to operate normally to output large energy (the conveyed fluid does not obtain kinetic energy and flows in the pipeline) does not exist. Therefore, it can be judged that the sensor is damaged or that a problem occurs in the borehole pump itself.
Because the invention focuses on researching the method for preventing and avoiding the dead lock of the pump when the borehole pump is started, only the first two conditions are researched for four logic combination judgment of R, r and S, s.
Example 2
Referring to fig. 3 and 4, the method for preventing pump hold-up in the starting process of the drilling pump in the oil drilling engineering of the embodiment is implemented as follows: installing a pump speed sensor for acquiring the running speed R of the drilling pump on the drilling pump, transmitting a rotating speed signal to a controller, installing a pressure sensor for acquiring the slurry pressure LP in a vertical pipe on the vertical pipe, transmitting a pressure signal to the controller, and presetting that when the drilling pump is normally started, the running speed of the drilling pump is R (R is more than 0), the slurry pressure in the vertical pipe is LP (LP is more than 0); the controller executes the following program steps to judge whether the pump-holding condition of the drilling pump occurs:
when the drilling pump is started, acquiring the running speed of the drilling pump and the mud pressure in a vertical pressure pipeline in real time;
calculating the running speed R of the drilling pump and the mud pressure LP in the vertical pressure pipeline in real time, and comparing the running speed R of the drilling pump and the mud flow rate LP in the high pressure pipeline under the normal starting state:
(1) If R is larger than or equal to R and LP is larger than or equal to LP, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be blocked, and the drilling pump can be started;
(2) If R is larger than or equal to R and LP is smaller than LP, the high-pressure valve of the drilling pump is judged to be in a closed state, the pump is blocked, and the drilling pump cannot be started.
Example 3
Referring to fig. 7, the method for preventing the pump from being held back in the starting process of the drilling pump in the petroleum drilling engineering of the embodiment comprises the following steps: installing a flow velocity sensor on a pipeline at the downstream of the high-pressure valve, acquiring the flow velocity S of slurry in the high-pressure pipeline in real time, transmitting a flow velocity signal to a controller, acquiring a given voltage control signal V of the electric drilling pump in real time by the controller, executing the following program by the controller, and judging whether the drilling pump is subjected to a pump holding condition or not:
1) Setting a given voltage control signal of the electric drilling pump as v and the flow rate of mud in a high-pressure pipeline as s when the drilling pump is normally started;
2) When the drilling pump is started, acquiring a given voltage control signal of the electric drilling pump and the flow rate of slurry in a high-pressure pipeline in real time;
3) Calculating a given voltage control signal V of the electric drilling pump and the mud flow rate S in the high-pressure pipeline in real time, and comparing the given voltage control signal V of the electric drilling pump and the mud flow rate S in the high-pressure pipeline in a normal starting state:
(1) If V is larger than or equal to V and S is larger than or equal to S, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be blocked, and the drilling pump can be started;
(2) If V is larger than or equal to V and S is smaller than S, the high-pressure valve of the drilling pump is judged to be in a closed state, the pump is blocked, and the drilling pump cannot be started.
Example 4
Referring to fig. 8, the method for preventing pump set during the starting process of the drilling pump in the oil drilling engineering of the embodiment includes the following steps: the method comprises the following steps that a pressure sensor is arranged on a stand pipe to acquire the slurry pressure LP in the stand pipe in real time, a pressure signal is transmitted to a controller, the controller acquires a given voltage control signal V of the electric drilling pump in real time, and the controller executes the following process:
1) When the drilling pump is normally started, a given voltage control signal of the electric drilling pump is v, and the mud pressure in the vertical pipe is lp (lp is more than 0);
2) When the drilling pump is started, acquiring a given voltage control signal of the electric drilling pump and mud pressure in the vertical pipe in real time;
3) Calculating a given voltage control signal V of the electric drilling pump and the mud pressure LP in the vertical pipe in real time, and comparing the given voltage control signal V of the electric drilling pump and the mud pressure LP in the vertical pipe in a normal starting state:
(1) If V is larger than or equal to V and LP is larger than or equal to LP, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be blocked, and the drilling pump can be started;
(2) If V is larger than or equal to V and LP is smaller than LP, the high-pressure valve of the drilling pump is judged to be in a closed state, the pump is blocked, and the drilling pump cannot be started.
Example 5
Referring to fig. 5 and 6, the method for preventing pump holding during the starting process of the drilling pump in the oil drilling engineering of the embodiment can be executed by the controller, and the process of determining whether the drilling pump is held during the starting process of the drilling pump is as follows:
a pressure sensor is arranged on a water outlet pipeline of the drilling pump, the mud pressure BP of the drilling pump is collected in real time, a pressure signal is transmitted to a controller, a flow rate sensor is arranged on a pipeline at the downstream of a high-pressure valve, the mud flow rate S in the high-pressure pipeline is collected in real time, and a flow rate signal is transmitted to the controller;
1) Setting the flow rate of the slurry in a high-pressure pipeline as s when the slurry pressure of the drilling pump is bp (bp is more than 0) during normal starting of the drilling pump;
2) When the drilling pump is started, acquiring the mud pressure of the drilling pump and the mud flow rate in a high-pressure pipeline in real time;
3) Calculating the mud pressure BP of the drilling pump and the mud flow rate S in the high-pressure pipeline in real time, and comparing the calculated mud pressure BP with the mud flow rate S in the high-pressure pipeline under the normal starting state:
(1) If BP is larger than or equal to BP and S is larger than or equal to S, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be blocked, and the drilling pump can be started;
(2) If the BP is more than or equal to BP and S is less than S, the high-pressure valve of the drilling pump is judged to be in a closed state, the pump is blocked, and the drilling pump cannot be started.
Example 6
The method for preventing pump holding during the starting process of the drilling pump in the petroleum drilling engineering of the embodiment is different from the previous embodiments, and further comprises the following steps: the method is characterized in that a normally closed pneumatic valve is installed on a low-pressure water return pipeline of the drilling pump and serves as a low-pressure water return valve of the drilling pump, an actuating mechanism for opening and closing the normally closed pneumatic valve is controlled by a controller, and when the controller judges that a high-pressure valve of the drilling pump is in a closed state and the situation that the pump is possibly blocked occurs, the controller sends an instruction to open the normally closed pneumatic valve to release pressure.
Example 7
Referring to fig. 9, the method for preventing a pump from being held back during the starting process of a drilling pump in oil drilling engineering of the present embodiment is different from the foregoing embodiments, and further comprises: for a mechanical drilling pump, a normally closed pneumatic valve is installed on a low-pressure water return pipeline of the drilling pump and serves as a low-pressure water return valve 10 of the drilling pump, a normally open electromagnetic valve is connected to a start-stop control gas circuit of the drilling pump in series and is controlled by a controller, when the controller judges that a high-pressure valve of the drilling pump is in a closed state, and the situation that the pump is blocked occurs, a control instruction is sent to open the normally closed pneumatic valve to release pressure, meanwhile, the normally open electromagnetic valve is closed, a control gas circuit of the drilling pump is cut off, and the drilling pump stops running.
Example 8
Referring to fig. 10, the method for preventing pump hold-up during the starting process of the oil drilling engineering drilling pump of the present embodiment is different from the previous embodiments, and further comprises: for the electric drilling pump, a normally closed pneumatic valve is installed on a low-pressure water return pipeline of the drilling pump and serves as a low-pressure water return valve 10 of the drilling pump, a controller is connected with a start-stop control system intervening in the electric drilling pump, when the situation that a high-pressure valve of the drilling pump is in a closed state and the pump is blocked is judged, the controller sends a control instruction to open the normally closed pneumatic valve for pressure relief, and meanwhile, the start-stop control system of the drilling pump receives the pump stopping instruction sent by the controller to stop the drilling pump.
The method for preventing the pump from being held back in the starting process of the drilling pump in the petroleum drilling engineering can be used for comprehensively carrying out comparison and judgment by combining several groups of parameters which are mutually associated in a combined mode in practical application so as to increase the accuracy and the reliability of the judgment.
Example 9
The embodiment provides a method for monitoring and judging whether a drilling pump is held back in the starting process by comprehensively comparing and judging several parameters, which comprises the following specific steps:
1) Acquiring the rotating speed R of the drilling pump in real time;
2) Collecting the flow speed S of slurry in a high-pressure pipeline in real time;
3) Collecting the slurry pressure LP in the vertical pipe in real time;
4) Setting the flow rate of slurry in a high-pressure pipeline as s and the pressure of the slurry in a vertical pipe as lp when a drilling pump is normally started and the running speed of the drilling pump is r; the controller judges according to the acquired rotating speed R of the drilling pump, the flow rate S of the slurry in the high-pressure pipeline and the slurry pressure LP in the vertical pipe as follows;
(1) If R is larger than or equal to R, S is larger than or equal to S, and LP is larger than or equal to LP, judging that a high-pressure valve of the drilling pump is in an open state, and normally starting the drilling pump without the occurrence of a pump blocking condition;
(2) And if R is larger than or equal to R, S is smaller than S and LP is smaller than LP, judging that a high-pressure valve of the drilling pump is in a closed state, predicting that the pump is blocked, and stopping starting the drilling pump.
Claims (10)
1. A method for preventing pump holding-up in the starting process of a drilling pump in petroleum drilling engineering stops starting the drilling pump when judging that the pump holding-up condition possibly occurs, and is characterized in that: the process performed by the controller is as follows:
1) Acquiring the rotating speed R of the drilling pump in real time;
2) Collecting the flow speed S of slurry in a high-pressure pipeline in real time;
3) Setting the flow rate of mud in a high-pressure pipeline as s when the drilling pump is normally started and the running speed of the drilling pump is r;
(1) If R is larger than or equal to R and S is larger than or equal to S, judging that a high-pressure valve of the drilling pump is in an open state, and normally starting the drilling pump without the occurrence of a pump blocking condition;
(2) And if R is larger than or equal to R and S is smaller than S, judging that a high-pressure valve of the drilling pump is in a closed state, predicting that the pump is blocked, and stopping starting the drilling pump.
2. A method for preventing a pump from being held back in the starting process of a drilling pump in petroleum drilling engineering is executed by a controller, and the drilling pump is stopped when the situation that the pump is possibly held back is judged, and the method is characterized in that: the process is as follows:
1) Acquiring the rotation degree R of the drilling pump in real time;
2) Collecting the slurry pressure LP in the vertical pipe in real time;
3) Setting the mud pressure in the vertical pipe to be lp when the operating speed of the drilling pump is r when the drilling pump is normally started;
(1) If R is larger than or equal to R and LP is larger than or equal to LP, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be blocked, and the drilling pump can be started;
(2) And if R is larger than or equal to R and LP is smaller than LP, judging that a high-pressure valve of the drilling pump is in a closed state, and stopping starting the drilling pump when the pump is blocked.
3. A method for preventing a pump from being held back in the starting process of a drilling pump in petroleum drilling engineering is characterized by comprising the following steps: the method is executed by a controller, and when the condition that the pump is possibly held up is judged, the drilling pump is stopped to be started, and the process is as follows:
1) Collecting the flow speed S of slurry in a high-pressure pipeline in real time;
2) Acquiring a given voltage control signal V of the electric drilling pump in real time;
3) Setting the flow rate of mud in a high-pressure pipeline as s and a given voltage control signal v of the drilling pump when the electric drilling pump is normally started;
(1) If V is larger than or equal to V and S is larger than or equal to S, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be blocked, and the drilling pump can be started;
(2) If V is larger than or equal to V and S is smaller than S, the high-pressure valve of the drilling pump is judged to be in a closed state, the pump is stopped, and the drilling pump is stopped.
4. A method for preventing a pump from being held back in the starting process of a drilling pump in petroleum drilling engineering is characterized by comprising the following steps: the method is executed by a controller, and when the condition that the pump is possibly held up is judged, the drilling pump is stopped to be started, and the process is as follows:
1) Collecting the slurry pressure LP in the vertical pipe in real time;
2) Acquiring a given voltage control signal V of the electric drilling pump;
3) Setting the mud pressure in the vertical pipe to be lp and setting a given voltage control signal v of the drilling pump when the electric drilling pump is normally started;
(1) If V is larger than or equal to V and LP is larger than or equal to LP, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be blocked, and the drilling pump can be started;
(2) If V is larger than or equal to V and LP is smaller than LP, the high-pressure valve of the drilling pump is judged to be in a closed state, the pump is blocked, and the drilling pump is stopped.
5. A method for preventing a pump from being held back in the starting process of a drilling pump in petroleum drilling engineering is characterized by comprising the following steps: the method is executed by a controller, and when the condition that the pump is possibly held up is judged, the drilling pump is stopped to be started, and the process is as follows:
1) Collecting the mud pressure BP of the drilling pump in real time;
2) Collecting the flow speed S of slurry in a high-pressure pipeline in real time;
3) Setting the flow rate of the slurry in the high-pressure pipeline as s when the slurry pressure of the drilling pump is bp and the normal starting of the drilling pump is carried out;
(1) If BP is larger than or equal to BP and S is larger than or equal to S, the high-pressure valve of the drilling pump is judged to be in an open state, the pump cannot be blocked, and the drilling pump can be normally started;
(2) If the BP is more than or equal to the BP and S is less than S, judging that a high-pressure valve of the drilling pump is in a closed state, and stopping starting the drilling pump when the pump is blocked.
6. The method for preventing a pump from being held back during the starting process of the drilling pump in the petroleum drilling engineering according to any one of claims 1 to 5, which is characterized in that: for the mechanical drilling pump, a normally open electromagnetic valve is connected to a start-stop control gas circuit of the drilling pump in series and connected with a controller, and when the controller judges that a high-pressure valve of the drilling pump is in a closed state and the pump is blocked, a control instruction is sent to close the normally open electromagnetic valve, so that the control gas circuit of the drilling pump is cut off and the drilling pump stops running.
7. The method for preventing pump hold-down during the starting process of the drilling pump in the petroleum drilling engineering as claimed in claim 6, wherein: the low-pressure water return pipeline of the drilling pump is provided with a normally closed pneumatic valve serving as a low-pressure water return valve of the drilling pump, the normally closed pneumatic valve is connected to a controller in a controlled mode, and when the controller judges that the situation that the pump is blocked occurs, a control command is sent out to open the normally closed pneumatic valve to release pressure.
8. The method for preventing pump holding during the starting process of the drilling pump in the oil drilling engineering according to any one of the claims 1 to 5, characterized in that: for the electric drilling pump, the controller is involved in a start-stop control system of the electric drilling pump in a related mode, and when the controller judges that the high-pressure valve of the drilling pump is in a closed state and the pump is blocked, a pump-stopping control instruction is sent to the start-stop control system of the drilling pump, so that the drilling pump stops running.
9. The method for preventing pump hold-down during the starting process of the drilling pump in the oil drilling engineering as claimed in claim 8, wherein: and when the controller judges that the pump is blocked, a control instruction is sent to open the normally closed pneumatic valve to release pressure.
10. The method for preventing pump hold-down during the starting process of the drilling pump in the petroleum drilling engineering as claimed in claim 1, wherein: setting the mud pressure in the vertical pipe to be lp when the drilling pump is normally started; the controller simultaneously collects the slurry pressure LP in the vertical pipe in real time;
(1) If R is larger than or equal to R, S is larger than or equal to S, and LP is larger than or equal to LP, judging that a high-pressure valve of the drilling pump is in an open state, and normally starting the drilling pump without the occurrence of a pump blocking condition;
(2) And if R is larger than or equal to R, S is smaller than S and LP is smaller than LP, judging that a high-pressure valve of the drilling pump is in a closed state, predicting that the pump is blocked, and stopping starting the drilling pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211185913.6A CN115492749A (en) | 2022-09-27 | 2022-09-27 | Method for preventing pump from being held back in starting process of drilling pump in petroleum drilling engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211185913.6A CN115492749A (en) | 2022-09-27 | 2022-09-27 | Method for preventing pump from being held back in starting process of drilling pump in petroleum drilling engineering |
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| Publication Number | Publication Date |
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| CN115492749A true CN115492749A (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211185913.6A Pending CN115492749A (en) | 2022-09-27 | 2022-09-27 | Method for preventing pump from being held back in starting process of drilling pump in petroleum drilling engineering |
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| Country | Link |
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| CN (1) | CN115492749A (en) |
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2022
- 2022-09-27 CN CN202211185913.6A patent/CN115492749A/en active Pending
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