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Deposited sulfur source discrimination system

A technology for depositing sulfur and sulfur sources, which is applied in the fields of permeability/surface area analysis, suspension and porous material analysis, instruments, etc. It can solve the problems of large differences in seepage conditions and the inability to accurately determine the source of sulfur in core sulfur deposition, and achieve The effect of real-time accurate discrimination and accurate result data

Active Publication Date: 2020-04-21
PETROCHINA CO LTD +1
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Problems solved by technology

[0003] At present, PVT (Process Verification Test, process verification test) is commonly used to estimate the amount of sulfur deposition based on the solubility change of elemental sulfur in natural gas. There is almost no research on the identification of real sedimentary sulfur sources, and there is a big difference between laboratory tests and real formation seepage conditions. , leading to the fact that the current test method cannot achieve the purpose of accurately identifying the source of sulfur in the core sulfur deposit, and there is an urgent need for a system that can accurately identify the source of sulfur in the deposit in real time

Method used

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Embodiment approach

[0028] 1. The smart terminal 13 can be connected to the first pressure sensor 12, so as to obtain the pressure information in the ring pressure pump 11 in real time;

[0029] Two, the intelligent terminal 13 can be connected with the second pressure sensor 14 and the third pressure sensor 15, thereby obtaining the pressure information at the upper end of the first piston 5 and the second piston 7 in real time;

[0030] 3. The smart terminal 13 can be connected with the first pressure sensor 12, the second pressure sensor 14 and the third pressure sensor 15, so as to obtain the pressure information in the ring pressure pump 11, the first piston 5 and the second piston 7, and then synthesize The pressure information of the three places can grasp the process of sulfur deposition and the state of the system as a whole.

[0031] In one embodiment, the ring pressure pump 12 can be a constant speed and constant pressure pump, and the ring pressure pump 12 is provided with an upper pr...

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Abstract

The invention, which belongs to the technical field of oil and gas field development, discloses a deposited sulfur source discrimination system. The system comprises gas source equipment (101), a circulating sulfur deposition device (102), a sulfur source analysis device (103) and a desulfurization device (104). A circulating sulfur deposition device (102) communicated with gas source equipment (101) and the sulfur source analysis device (103) connected with the circulating sulfur deposition device (102) are designed and main components of the circulating deposition device (102) are arranged in a constant-temperature box (9); the circulating sulfur deposition process is enabled to be closer to the sulfur deposition process under the real stratum condition, so that result data obtained by analyzing different sulfur sources in the sulfur-containing natural gas in the sulfur source analysis device (103) is enabled to be more accurate, and the purpose of accurately judging the deposited sulfur source in real time is achieved.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a depositional sulfur source discrimination 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 will be precipitated from sulfur-containing natural gas in the form of monomer, and deposited in the pores of reservoir rocks, while sulfur deposited in a certain It is irreversible under certain conditions. Once deposited, it will block the permeable channel of natural gas, and it is difficult to restore the original permeability, thereby reducing the effective pore space and permeability of the formation. Therefore, sulfur deposition has become a difficult problem that must be solved. The identification of deposited sulfur sources And evaluation has become an important step in the development of high-sulfur gas reservoirs. [000...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/00G01N13/04G01N15/08
CPCG01N13/00G01N13/04G01N15/088
Inventor 周克明李农蒲治锦何家欢王丽万莹唐大卿谭杰
Owner PETROCHINA CO LTD
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