CN-121999582-A - Pumping unit wellhead load loss alarm device and method

CN121999582ACN 121999582 ACN121999582 ACN 121999582ACN-121999582-A

Abstract

The invention relates to the technical field of petroleum exploitation, in particular to a lost-load alarm device and method for a wellhead of an oil pumping unit, wherein the device comprises a lost-load trigger unit, a data transmitting unit, a data receiving unit and a terminal alarm unit; the system comprises a data transmitting unit, a data receiving unit, a terminal alarming unit, a load losing triggering unit, a data transmitting unit, a data receiving unit and a terminal alarming unit, wherein the load losing triggering unit is electrically connected with the data transmitting unit, the data transmitting unit is electrically connected with the data receiving unit, the data receiving unit is electrically connected with the terminal alarming unit, the load losing triggering unit is used for triggering an alarm when an abnormal working condition occurs, the data transmitting unit is used for activating pre-stored data information after triggering the alarm and transmitting the pre-stored data information to the data receiving unit, the data receiving unit is used for receiving the data information transmitted by the data transmitting unit, and the terminal alarming unit is used for displaying the alarm information. The invention can improve the failure load detection efficiency of the pumping unit, timely and accurately find out the failure phenomenon and take necessary measures to prevent the damage of wellhead equipment facilities.

Inventors

ZHU ANJIANG
CHEN QILIANG
CHEN CHAO
LIU XIANGDONG
ZHANG CHENJING
YANG FAN
FENG XIAOQIANG
XU LEI
ZHOU YUANHAI

Assignees

中国石油天然气股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241101

Claims (10)

1. The well mouth load loss alarm device of the pumping unit is characterized by comprising a load loss trigger unit, a data transmitting unit, a data receiving unit and a terminal alarm unit, wherein the load loss trigger unit is electrically connected with the data transmitting unit, the data transmitting unit is electrically connected with the data receiving unit, and the data receiving unit is electrically connected with the terminal alarm unit; The load loss triggering unit is used for triggering an alarm when abnormal working conditions occur; the data transmitting unit is used for activating the pre-stored data information after triggering the alarm and transmitting the pre-stored data information to the data receiving unit; the data receiving unit is used for receiving the data information sent by the data transmitting unit; The terminal alarm unit is used for displaying alarm information.
2. The pumping unit wellhead load loss alarm device according to claim 1 is characterized in that the load loss trigger unit comprises a trigger mechanism and a power supply mechanism, the trigger mechanism, the power supply mechanism and the data transmitting unit are connected in series, wherein the trigger mechanism is an insulating part with one end fixedly arranged on a polish rod clamp, the other end of the insulating part is clamped between a connecting terminal of a battery bin and a positive electrode or a negative electrode of a battery, the power supply mechanism comprises the battery bin and the battery, and the battery is arranged in the battery bin and used for providing a conductive power supply for the data transmitting unit.
3. The oil pumping unit wellhead load-loss alarm device according to claim 2, wherein the insulating member is an insulating tape.
4. A pumping unit wellhead load loss alarm device according to claim 1,2 or 3, further comprising a terminal device electrically connected to the data receiving unit.
5. The pumping unit wellhead off-load alarm device of claim 4, wherein the terminal device is at least one of an upper computer, a DCS or a handheld intelligent terminal.
6. The oil pumping unit wellhead load-loss alarm device according to claim 5, further comprising a remote control module electrically connected to the terminal device for implementing remote automatic stop.
7. The wellhead load-loss alarm device of pumping unit according to claim 5 or 6, further comprising a pressure transmitter, wherein a gauge head of the pressure transmitter is fixedly mounted on the polish rod clip, and the pressure transmitter is electrically connected with the terminal equipment.
8. A wellhead load loss alarm method for a pumping unit is characterized by comprising the steps that when an abnormality occurs, a displacement occurs between a polish rod clamp and a rope hanger, an insulating belt fixed on the polish rod clamp is pulled away, a power supply between a battery compartment and a data transmitting unit is conducted, data information stored in the data transmitting unit is activated and sent to a terminal device, and alarm is achieved, wherein the data information comprises the number and position information of a fault pumping unit.
9. The method for warning of loss of load at the wellhead of a pumping unit according to claim 8, wherein the data information is transmitted to the terminal device through the industrial communication protocol of the communication interface, and the terminal device displays, records, analyzes and processes the data information after receiving the data information.
10. The method for alarming the loss of load of the wellhead of the pumping unit according to claim 8 or 9, wherein the terminal equipment performs electrical interlocking control after analyzing and processing the received data information, thereby realizing remote automatic stop.

Description

Pumping unit wellhead load loss alarm device and method Technical Field The invention relates to the technical field of oil exploitation, in particular to a wellhead load loss alarm device and method for an oil pumping unit. Background The pumping unit is the most common equipment in mechanical oil extraction, is connected with underground load through a polish rod clip, and normally collects a pumping unit work diagram by a load meter when the pumping unit is in normal operation. If the well bottom is blocked or blocked by wax, the descending speed of the polish rod is not synchronous with the descending speed of the horsehead, so that the load instrument and the rope hanger are disconnected. Particularly, a spare clamp for preventing the polish rod from breaking off is arranged in the field management at present, so that the horsehead repeatedly collides with the spare clamp and the load meter in the descending process, the polish rod and the load meter are damaged, and the polish rod is seriously deformed and a wellhead is damaged. Under the existing technical conditions, the automatic indicator diagram cannot realize real-time monitoring, a load meter of the pumping unit integrating load measurement, displacement measurement, wireless radio frequency technology and GPRS technology can automatically acquire load and stroke information of the pumping unit, and indicator diagram data can be obtained through calculation. In the acquisition process, the dynamometer mainly relies on a strain sensor to acquire stress data of a pole, and an accelerometer is used for measuring displacement information. These data are used to map the ground or polished rod indicator in a rectangular coordinate system to reflect the relationship between the horsehead suspension point load and displacement of the pumping unit. The current available graphic calculation loading completion speed is one every 30 minutes, even if a central control room finds out an abnormality to inform fault inspection, inspection personnel usually stop the machine when arriving at the scene, and the load meter is damaged due to the impact load caused by the rope hanger. Taking the production scale of 3500 pumping wells in a certain oil extraction factory as an example, statistics shows that about 60 pumping well clamping load instruments are damaged every year, the equipment is required to be returned to the factory for maintenance, and the equipment damage rate and the maintenance cost are high. Disclosure of Invention The invention provides a pumping unit wellhead load loss alarm device and a pumping unit wellhead load loss alarm method, which overcome the defects of the prior art and can effectively solve the problems of high equipment damage rate and high maintenance cost caused by untimely alarm when the pumping unit wellhead is in load loss. The invention discloses a pumping unit wellhead load loss alarm device, which is realized by the following measures that the device comprises a load loss trigger unit, a data transmitting unit, a data receiving unit and a terminal alarm unit, wherein the load loss trigger unit is electrically connected with the data transmitting unit, the data transmitting unit is electrically connected with the data receiving unit, and the data receiving unit is electrically connected with the terminal alarm unit; The load loss triggering unit is used for triggering an alarm when abnormal working conditions occur; the data transmitting unit is used for activating the pre-stored data information after triggering the alarm and transmitting the pre-stored data information to the data receiving unit; the data receiving unit is used for receiving the data information sent by the data transmitting unit; The terminal alarm unit is used for displaying alarm information. The following are further optimizations and/or improvements to one of the above-described inventive solutions: The load loss triggering unit comprises a triggering mechanism and a power supply mechanism, wherein the triggering mechanism, the power supply mechanism and the data transmitting unit are connected in series, the triggering mechanism is an insulating part, one end of the insulating part is fixedly arranged on a polish rod clamp, the other end of the insulating part is clamped between a wiring terminal of a battery compartment and the positive electrode or the negative electrode of a battery, and the power supply mechanism comprises the battery compartment and the battery which is arranged in the battery compartment and used for providing a conductive power supply for the data transmitting unit. The insulating member may be an insulating tape. And can also comprise a terminal device which is electrically connected with the data receiving unit. The terminal equipment can be at least one of an upper computer, a DCS or a handheld intelligent terminal. The remote control module is electrically connected with the terminal equipment and is used for realizing remo