Intelligent high-pressure physical property sampler

Abstract

The invention relates to a downhole sampling device and specifically discloses an intelligent high-pressure physical property sampler. The sampler comprises a communication joint as well as an electronic control tube and a sampling tube that are sequentially connected with the communication joint; the electronic control tube comprises a transmission shaft, a speed reducer connected with the transmission shaft, a motor connected with the speed reducer, as well as a circuit board and battery which are connected with the motor; the transmission shaft is provided with a locking block; the communication joint is connected with a controller; the controller is connected with a computer by a USB communication line; the controller comprises a control circuit part, a liquid crystal display part, anoperating keyboard part, a power supply battery part and a housing case part; the operating keyboard part comprises a data key, a movement key, a setting key, a mode key, a starting key and a test key. The sampler has the advantages of being short in sampling tube, good in sealing property, convenient in connection and strong in real-time property; stored sampling data can be rapidly processed andanalyzed by the computer, and the success rate of sampling is high.

Description

technical field [0001] The invention relates to the technical field of downhole sampling devices, in particular to an intelligent high-pressure physical property sampler. Background technique [0002] With the continuous in-depth development of oilfield development technology, my country's petroleum industry is currently paying more and more attention to the authenticity and reliability of oil and gas samples from exploration and development oil and gas wells. Obtaining first-hand real and effective oil and gas sample data is an important task for contemporary oil workers. Critical. Whether it is in the downhole sampling operation stage or the laboratory sample analysis stage, ensure that the oil and gas samples completely maintain the single-phase, high pressure, and high temperature of the original oil and gas well formation state; ensure that the sample parameters obtained by the test are true and effective downhole parameters are the sampler and its parameters. The ultim...

AI Technical Summary

Problems solved by technology

During the downhole sampling operation of the sampler, the sampling cylinder is always kept open, which cannot guarantee that the sample taken is the sample of the expected target layer, which makes the oil and gas samples distorted; During the replacement process, using mercury or saturated brine to directly contact the oil and gas samples will lead to contamination of the oil and gas samples

[0004] Whether it is sample distortion or sample contamination, the test data deviates from the actual situation, and even draws wrong conclusions, which cannot provide real and effective guidance for oil and gas development, or seriously mislead the formulation of oil and gas development plans

[0005] Although some oil and gas wells currently use volumetric samplers imported from abroad, the sampling control uses a mechanical clock, and the sampling time setting is not accurate enough

Images