Automatic sampling system for logging rock waste

Abstract

The invention discloses an automatic sampling system for logging rock waste. The system comprises a control system and a sampling pump used for extracting drilling mud containing stratum rock waste. The sampling pump is connected with a power device used for separating rock waste from mud. The power device is connected with a rock waste cleaning device. A mud collection box is arranged below the power device. The sampling pump, the power device and the rock waste cleaning device are connected with the control system. According to the system, stratum rock waste can be automatically gained, separation and cleaning of rock waste and mud are automatically achieved, representative rock waste is rapidly and continuously obtained, logging sand gaining time is shortened, the labor cost of logging operation is saved, the rock waste logging data quality and rock waste collection precision are improved to the largest degree, the rock waste section coincidence rate is improved, influences of manual operation are reduced, the work intensity of logging data collection staff is lowered, and working efficiency and accuracy are improved; the number of logging on-site operation staff is reduced, the employment risk and the labor intensity are lowered, and high automation of logging work is achieved.

Description

technical field [0001] The invention belongs to the technical field of drilling and mud logging, and relates to an oil and gas exploration technology, in particular to an automatic sampling system for mud logging cuttings. Background technique [0002] Cuttings produced during drilling are an important information carrier for understanding formations and an important basis for discovering and evaluating oil and gas layers. During the drilling process, timely and scientific analysis of cuttings returned from the bottom of the well is required to obtain accurate oil well geological information, timely grasp the location and depth of oil and gas reservoirs and other related information, and provide reliable basis for the development of oil and gas fields. Mud logging operation is to obtain real formation information through real-time monitoring and scientific analysis of formation cuttings during drilling, and provide scientific and effective solutions for oilfield development....

AI Technical Summary

Problems solved by technology

At present, in the petroleum industry, mud logging and dredging are manually carried out on the vibrating screen of the drilling rig, and the resulting cuttings are mixed with a large amount of soil, and then the cuttings and soil are separated and cleaned manually, which consumes a lot of manpower and time. Continuous sampling is not possible, the number of cuttings taken is small, the efficiency is low, and formation information is easy to be missed. With the rapid development of modern drilling technology, the drilling speed has been greatly increased. It is difficult to rely on manual fishing and separation of cuttings to meet the needs of drilling and mud logging There is an urgent need for automated mud logging cuttings sampling and separation equipment

Images