Fully automatic cleaning machine for drilling cuttings and its cleaning method

Abstract

The invention discloses a full-automatic drill cuttings cleaning machine, comprising a sand collecting cavity; a waste water holding cavity is arranged in the sand collecting cavity, a sand cleaning bucket is arranged in the waste water holding cavity, a motor is connected with the bottom of the sand cleaning bucket for driving the same to rotate, a water injection nozzle connected with a water intake pipe is arranged over the top of the sand cleaning bucket, a sensor is arranged on a sand conveying path, a high-pressure water pump is arranged on the water intake pipe, the output signal of the sensor is connected to a automatic controller. When in use, the cuttings to be cleaned is placed in the sand cleaning cavity; water is injected into the cuttings in the sand cleaning bucket; the motor drives the sand cleaning bucket to rotate so as to clean, dewater and throw the cuttings; the water released from the cuttings is drained from an outlet at the bottom of the waste water holding cavity; and the sand thrown out is collected after discharging from a sand outlet at the bottom of the sand collecting cavity. According to the cleaning method of the full-automatic drill cuttings cleaning machine, the cuttings are fully cleaned by combined effect of low-speed forward and reverse rotation and high-pressure water, the cleaning efficiency of the cuttings is improved, the automatic discharge of cuttings is realized, the cuttings is prevented from being secondarily damaged, the sand cleaning period is shortened, and the automatic sand cleaning process is realized.

Description

technical field [0001] The invention belongs to the technical field of drilling and mud logging, and in particular relates to a fully automatic cleaning machine for drilling cuttings and a cleaning method thereof. Background technique [0002] The cuttings produced during the drilling process are important information for understanding the formation and an important basis for discovering and evaluating oil and gas layers. During the drilling process, it is necessary to analyze the sandstone in the cuttings to obtain its accurate geological information, timely grasp the position and depth of oil and gas reservoirs, and facilitate the adjustment of drilling direction. Drilling cuttings contain a lot of mud when they are brought up from downhole by mud, so they must be washed to get clean sandstone. At present, my country's petroleum industry has been relying on manual fishing and cleaning of cuttings. The drilling rig has not drilled one meter, and a sand sample needs to be c...

AI Technical Summary

Problems solved by technology

At present, my country's petroleum industry has been relying on manual fishing and cleaning of cuttings. The drilling rig has not drilled one meter, and a sand sample needs to be cleaned and preserved. The whole process of manual sand washing takes about 30 minutes. Due to time, quantity, standards, etc., the work is cumbersome. , heavy workload, low efficiency, easy to miss

Due to the rapid development of modern drilling technology, the drilling speed has been greatly increased. It is difficult to meet the technical requirements of drilling and logging by manual fishing and cleaning of cuttings, and there is an urgent need for mechanized automatic sand washing equipment.

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