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Method and pump pressure protection system for preventing misoperation of drilling pump in petroleum drilling engineering

A technology for oil drilling and protection systems, applied in pump control, pump testing, liquid displacement machinery, etc., can solve problems such as suffocation of pumps, inability to judge whether high-pressure valves are closed, etc., to prevent misoperation accidents of drilling pumps , Realize the effect of pump pressure safety protection and reasonable design

Active Publication Date: 2020-03-17
PUYANG BAIFU REIDE PETROLEUM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this method cannot judge whether the high-pressure valve is closed, it cannot solve the problem of suffocating the pump.

Method used

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  • Method and pump pressure protection system for preventing misoperation of drilling pump in petroleum drilling engineering
  • Method and pump pressure protection system for preventing misoperation of drilling pump in petroleum drilling engineering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The method for preventing the misoperation of the drilling pump in the petroleum drilling engineering of the present invention, the realization process is as follows:

[0025] 1) Install a pressure sensor on the standpipe to detect the mud pressure P0 in the standpipe;

[0026] Install a pressure sensor Ⅰ on the pipeline at the outlet of the drilling pump Ⅰ to detect the pressure P1 of the drilling pump Ⅰ;

[0027] Install a pressure sensor II on the pipeline at the outlet of the drilling pump II to detect the pressure P2 of the drilling pump II;

[0028] 2) Set the average value of the mud pressure difference in the upstream and downstream pipelines of the high pressure valve as n under normal working conditions, and set the parameter N in combination with the parameters of the drilling equipment used, and the parameter N satisfies: 1≤N-n≤3;

[0029] When the drilling pump is started, the controller compares the pressure P0 in the standpipe, the pressure P1 of the dri...

Embodiment 2

[0036] The pump pressure protection system for preventing the misoperation of the drilling pump in the petroleum drilling engineering of the present invention includes a standpipe pressure sensor, a controller and an actuator, corresponding to the drilling pump I and the drilling pump II as the common drilling pump and the standby drilling pump, respectively setting the pump pressure The detection sensor, the output signals of the standpipe pressure sensor and the pump pressure detection sensor are respectively connected to the controller through the AD analog-to-digital converter, and are connected to the controller with two control mechanism outputs to control and connect the drilling pump I and the drilling pump II respectively. According to the monitoring and judging method described in claim 1, the controller recognizes the misoperation of the drilling pump, and controls the starting and stopping of the drilling pump I or the drilling pump II through the corresponding contr...

Embodiment 3

[0038] see figure 1 , the pump pressure protection system for oil drilling engineering in this embodiment to prevent misoperation of drilling pumps is different from Embodiment 2 in that further, for mechanical drilling pumps, the actuator adopts a pneumatic control system, and the controller outputs two control signals The control solenoid valve of the drilling pump I and the control solenoid valve of the drilling pump II are respectively connected, and the clutch controller of the drilling pump is connected through the solenoid valve.

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PUM

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Abstract

The invention relates to petroleum drilling engineering safety control technology, and discloses a method and pump pressure protection system for preventing misoperation of a drilling pump in petroleum drilling engineering. Accoding to the method, it is assumed that the average value of mud pressure difference between upstream and downstream pipelines of a high pressure valve under normal operating conditions is n, and a parameter N is set to satisfy the condition that N-n is greater than or equal to 1 and less than or equal to 3; and when the drilling pump is started, comparison is carried out in real time according to the pressure P 0 in a riser, the pressure P 1 of a drilling pump I and the pressure P 2 of a drilling pump II, specifically, (1) if P 0-P 1 is less than or equal to N, or P2-P 1 is less than or equal to N and P 0-P 1 is less than or equal to N, it is determined that the high pressure valve of the drilling pump I is in an open state and the drilling pump I can be started; (2) if P 0-P 2 is less than or equal to N, or P 1-P 2 is less than or equal to N and P 0-P 2 is less than or equal to N, it is determined that the high pressure valve of the drilling pump II is inan open state and the drilling pump II can be started; (3) If P 0-P 1 is greater than N, or P 2-P 1 is greater than N and P 0-P 1 is greater than N, it is determined that the high-pressure valve of the drilling pump I is in a closed state and the drilling pump I cannot be started; and (4) if P 0-P 2 is greater than N, or P 1-P 2 is greater than N and P 0-P 2 is greater than N, it is determined that the high-pressure valve of the drilling pump II is in a closed state and the drilling pump II cannot be started.

Description

technical field [0001] The invention relates to oil drilling engineering safety control technology, in particular to a monitoring and preventive treatment method for preventing misoperation of drilling pumps and a pump pressure protection system. Background technique [0002] In the process of oil exploration, development and drilling, it is an essential requirement for safe production to prevent the drilling pump from holding back the pump. [0003] At present, one drilling unit is equipped with two drilling pumps during domestic drilling operations. In the design of the water outlet of each drilling pump, it is generally equipped with a high-pressure valve and a low-pressure return valve. If one of the two drilling pumps fails and needs to be repaired, the high-pressure valve of the faulty drilling pump must be closed to prevent the high-pressure mud generated during the operation of the other drilling pump from flowing into the drilling pump being repaired and causing dam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06F04B49/08F04B49/10
CPCF04B49/065F04B49/08F04B49/10F04B2205/07
Inventor 赵刚于春夏玉龙张英栋
Owner PUYANG BAIFU REIDE PETROLEUM SCI & TECH CO LTD
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