Digital wireless well workover weight-indicating anti-collision instrument

Abstract

The invention relates to a digital wireless well-repairing weight-indicating anti-collision device which comprises a primary meter, a secondary meter, a pressure transmitter, a pulse sensor, an electromagnetic directional valve and an alarm speaker, wherein, data transfer is carried out between the primary meter and the secondary meter by a wireless data transmission module, and the pressure transmitter, the pulse sensor, the electromagnetic directional valve and the alarm speaker are respectively connected with the secondary meter by cables. The primary meter takes a high-precision load sensor as a hook load sensing component, the secondary meter comprises an industrial control computer, a liquid crystal display is adopted to display engineering parameters, and the electromagnetic directional valve and the alarm speaker are externally connected to automatically process the anti-collision control of a crown block.

Description

technical field [0001] The invention relates to a new workover detection and control instrument, in particular to a hook load indicating instrument and a crown block anti-collision control instrument of a workover rig or a well drilling rig, that is, a digital wireless workover weight anti-collision instrument. Background technique [0002] With the in-depth development of oilfields and the development of development technology in China, the number of deep wells and inclined wells has increased, and the downhole operations of oilfields have become more complicated. Major oilfields have entered the middle and late stage of development one after another, and the number of workover operations has increased year by year. In order to ensure the normal production of oil wells, workover operations have become the main work of oil production. In the prior art, the weight gauges currently used in oil field workover operations at home and abroad generally have the following problems: ...

AI Technical Summary

Problems solved by technology

[0003] 1. Most of the primary meters use mechanical tension sensors or hydraulic sensors, and the nominal accuracy can only reach 1.5% to 2%, and they are particularly susceptible to factors such as temperature, resulting in lower actual accuracy than the nominal accuracy

Due to the relatively low sensitivity and precision, accurate measurement cannot be carried out, and it is difficult to judge the salvage situation when fishing for light falling objects underground, and rework occurs from time to time, which increases the labor intensity and construction cost of the staff

[0004] 2. The secondary meter adopts mechanical instrument or electronic digital display mode, and the spring tube type pressure gauge adopted by the mechanical instrument further reduces the overall accuracy of the instrument; although the electronic liquid crystal digital display mode will not reduce the accuracy of the instrument again, this display The method is very different from the observation habits of the operator, and it is difficult to be accepted by the operator

[0005] 3. The primary meter and the secondary meter are connected by cable. Due to the harsh environment of the workover operation site, water ingress and breakage of the cable often cause the instrument to fail to work normally.

[0006] 4. The workover gauge and the crown block anti-collision device are two completely independent systems produced by two manufacturers, which increases the purchase cost and maintenance cost

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