Intelligent high pressure physical sampler

Abstract

The invention relates to a downhole sampling device, in particular to an intelligent high pressure physical sampler. The intelligent high pressure physical sampler comprises a communication joint, anelectronic control drum and a sampling drum connected with the communication joint in sequence. The electronic control drum comprises a transmission shaft, a speed reducer connected with the transmission shaft, a motor connected with the speed reducer, a circuit board and a battery, wherein the circuit board and the battery are connected with the motor. A locking block is further arranged on the transmission shaft. The communication joint is connected with a controller. The controller is connected with a computer through a USB communication line. The controller comprises a control circuit part, a liquid crystal display screen part, an operating keyboard part, a power supply battery part and a shell machine box part. The operating keyboard part includes a data key, a mobile key, a setting key, a mode key, a startup key and a test key. The intelligent high pressure physical sampler has the advantages that a sample drum is short, the sealing property is good, connecting is convenient, thereal-time performance is high, sampling storage data can be processed and analyzed by the computer quickly, and the sampling success rate 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

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