Indoor truth-preserving sampling, sample storage and analysis device and method based on deep well sampling

Abstract

The invention discloses an indoor truth-preserving sampling, sample storage and analysis device based on deep well sampling. The device comprises a high-pressure gas source system and a truth-preserving sampling system which is connected with the high-pressure gas source system and used for collecting a formation fluid sample, wherein the truth-preserving sampling system is respectively connected with an immediate decompression analysis system for performing online analysis on the formation fluid sample, a truth-preserving sample storage system for performing undisturbed preservation on a fluid in the formation fluid sample and a chemical online analysis system for monitoring and analyzing the formation fluid sample, and the truth-preserving sampling system, the immediate decompression analysis system, the truth-preserving sample storage system and the chemical online analysis system are connected with a waste water and waste gas treatment system. The invention further comprises an indoor truth-preserving sampling, sample storage and analysis method based on the deep well sampling. The method disclosed by the invention has the advantages of easiness in operation, and simplicity and convenience in operation; and modular integration is adopted, all modules are independent mutually, mutual interference of various samples can be avoided, and multi-formation and multi-position simultaneous sampling can be further realized.

Description

technical field [0001] The invention relates to the field of fidelity sampling of deep well formation fluids, in particular to an indoor fidelity sampling, storage and analysis device based on deep well sampling, and also to a method for indoor fidelity sampling, storage and analysis based on deep well sampling, which is applicable to The sampling of deep well fluid samples can also be used for sampling under various high temperature and high pressure. Background technique [0002] With oil and gas extraction, CO 2 The development of geological storage technology, energy and waste geological storage technology, deep environmental monitoring and other fields is extremely important for the study of formation temperature and pressure, fluid composition, fluid electrochemistry and the change trend in the underground environment. In order to accurately study the nature and composition of subsurface fluids, fidelity sampling technology must be used to collect subsurface fluid sam...

AI Technical Summary

Problems solved by technology

[0003] At present, there are various sampling devices, each of which has its own characteristics, but generally speaking, there is no reliable parameter to calibrate the fidelity of the sample, and it is impossible to determine the in-situ temperature and pressure conditions of the sampled product. The original state of the sample

At the same time, the sampling rate, sampling volume and fidelity cannot be precisely controlled, which also leads to the fact that the collected samples do not fully reflect the properties of the samples in the formation, and cannot meet the current high-precision analysis requirements.

Faced with the increasingly high requirements for sampling accuracy and sample fidelity in modern engineering applications, traditional sampling methods are faced with difficulties in controlling the sampling rate, sampling volume, and fidelity, and the accuracy of samples cannot give reliable quantification. The standard, the difficulty of maintaining the sampling pressure and temperature

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