Multi-section high-precision spiral rock debris weighing device and method

Abstract

The invention discloses a multi-section high-precision spiral rock debris weighing device and method. The multi-section high-precision spiral rock debris weighing device comprises a feeding section, a weighing section and a discharging section, the feeding section is used for receiving rock debris which flows out of the shaft bottom and is treated through a vibrating screen, the weighing section is used for weighing the rock debris, and the discharging section is used for discharging the rock debris; one end of the weighing section is provided with a first floating connecting device used for being connected with the feeding section, and the other end of the weighing section is provided with a second floating connecting device used for being connected with the discharging section; each floating connecting device comprises a connecting block, a first linear groove is formed in the feeding section, a second linear groove is formed in the discharging section, a first fixing protruding block used for being connected with the first linear groove is arranged at one side of the connecting block, a second fixing protruding block used for being connected with the second linear groove is arranged at the other side of the connecting block, and the first fixing protruding block and the second fixing protruding block are not parallel. No special technology is needed, the structure is simple, implementation is easy, and the rock debris weight measuring precision and the accuracy of judging the well bottom drilling condition are improved.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, in particular to a multi-stage high-precision spiral cuttings weighing device and method. Background technique [0002] In the process of oil drilling and shale gas development, as the burial depth increases, the geological engineering conditions become more complex, and complex accidents such as leakage, blowout, sticking, and collapse are prone to occur during the drilling stage, which increases the drilling cycle and drilling cost. The occurrence of complex accidents such as leakage, blowout, jamming, and collapse is often accompanied by changes in the amount of cuttings returned. Therefore, by monitoring the amount of cuttings returned in real time, the drilling status of the bottom hole can be accurately judged in a timely, accurate and low-cost manner. , take timely measures to reduce losses. The easiest way to monitor the change of cuttings returning and to measure and judge th...

AI Technical Summary

Problems solved by technology

The weighing principle of the existing screw conveying weighing device that can measure the weight of materials in real time is to calculate indirectly by using the relationship between the screw pitch, the number of revolutions and the density of the material under the condition of full material or uniform incoming material. Weighing for discontinuous material conveying

The use of load cells and corresponding calculation methods can effectively solve the weighing of discontinuous conveying of materials, but this method requires high sensor sensitivity. The existing screw conveying structure has two effects on the load cell. One is that the material enters The falling force of the barrel causes an impact on the load cell, which causes data fluctuations of the load cell. Second, due to the length and processing accuracy of the conventional screw conveyor, the coaxiality of the screw and the screw conveyor barrel is not accurate enough. Form jitter, causing the load cell data to fluctuate

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