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Core sulfur analysis system

An analysis system and core technology, applied in analysis of materials, permeability/surface area analysis, suspension and porous material analysis, etc., can solve problems such as the inability to accurately evaluate the amount of sulfur deposition in real time and the permeability damage of reservoir rock samples.

Active Publication Date: 2020-04-21
PETROCHINA CO LTD +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides an effective rock core sulfur analysis system, which can solve the problem that the current testing methods and devices cannot accurately evaluate the amount of sulfur deposition and its damage to the permeability of reservoir rock samples in real time

Method used

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Embodiment approach

[0046] 1. The smart terminal 14 can be connected with the first pressure sensor 12 and the second pressure sensor 13, so as to obtain the pressure information of the upper ends of the first piston 5 and the second piston 7 in real time.

[0047] Two, the smart terminal 14 can be connected with the third pressure sensor 16, thereby obtaining the pressure information in the ring pressure pump 15 in real time;

[0048] 3. The smart terminal 14 can be connected with the first pressure sensor 12, the second pressure sensor 13 and the third pressure sensor 16, thereby obtaining the pressure information in the first piston 5, the second piston 7 and the ring pressure pump 15, and then comprehensively The pressure information of the three places can grasp the process of sulfur deposition and the state of the system as a whole.

[0049] In one embodiment, the ring pressure pump 15 can be a constant speed and constant pressure pump, and the ring pressure pump 15 is provided with an uppe...

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Abstract

The invention, which belongs to the technical field of oil and gas field development, discloses a rock core sulfur analysis system comprising a gas source device (101), a circulating sulfur depositiondevice (102), an analysis device (103) and a desulfurization device (104). According to the invention, the circulating sulfur deposition device (102) connected with gas source device (101) is designed; main components in the circulating sulfur deposition device (102) are arranged in a constant-temperature box (10); an analysis device (103) capable of acquiring and testing reference data of a natural gas sample and a rock core sample in the gas source device (101) and the circulating sulfur deposition device (102) in real time is designed. Therefore, the system can analyze the change conditions of permeability, porosity, sulfur element content and the like of the rock core in the sulfur deposition process under the simulated temperature condition of a real stratum, so that the influence ofsulfur deposition on the rock core is obtained.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a rock core sulfur analysis system. Background technique [0002] High-sulfur gas reservoirs are widely distributed in my country. With the continuous decrease of formation pressure and temperature, elemental sulfur is precipitated from the carrier gas in the form of monomer and deposited in the pores of reservoir rocks. However, sulfur deposition is irreversible under certain conditions. Once deposited, it will block the permeation channel of natural gas, making it difficult to restore the original permeability, thus reducing the effective pore space and permeability of the formation. Therefore, the analysis and evaluation of cores before and after sulfur deposition has become an important step in the development of high-sulfur gas reservoirs. [0003] At present, PVT (Process Verification Test, process verification test) is commonly used to estimate the a...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/08G01N15/088
Inventor 蒲治锦李农周克明何家欢王丽万莹邓晓航张伟
Owner PETROCHINA CO LTD
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