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Fluid identification method and device

A fluid identification and fluid type technology, applied in seismic signal processing, seismology for logging records, etc., can solve the problem of high fluid complexity, achieve the effect of simple acquisition process, low identification complexity, and reduced complexity

Active Publication Date: 2020-06-30
PETROCHINA CO LTD
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Problems solved by technology

[0005] The application provides a fluid identification method and device, which can solve the problem of high complexity in identifying fluids in reservoirs

Method used

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  • Fluid identification method and device
  • Fluid identification method and device

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Embodiment Construction

[0044] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0045] The formation of an oil and gas field may include multiple reservoirs, and each reservoir may cover multiple areas where oil and gas are stored. In the process of oil and gas field development, it is necessary to determine the type of fluid in the reservoir according to the geological characteristics of the reservoir (such as water saturation or rock chloride salt content, etc.), and after determining that the fluid in the reservoir is not water, the oil and gas mining. When determining the type of fluid in a reservoir by water saturation, it is necessary to determine the water saturation of the reservoir based on rock samples in the reservoir, and it is necessary to ensure the integrity of the rock samples taken from the ...

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Abstract

The invention discloses a fluid identification method and device, and belongs to the field of oil and gas field exploitation. The method comprises the steps: obtaining target parameters of an area where a target well is located in a reservoir, wherein the target parameters comprise porosity, rock density, formation water mineralization degree, rock chlorate content and a water saturation thresholdvalue; determining a specified parameter value of an area where the target well is located in the reservoir based on the target parameter, the specified parameter value comprising at least one of a rock chlorate content threshold and water saturation; and determining the fluid type of the area where the target well is located in the reservoir based on the specified parameter value and the targetparameter. According to the method and the device, the problem of relatively high complexity of identifying the fluid in the reservoir is solved. The method is used for identifying the fluid type in the reservoir.

Description

technical field [0001] The present application relates to the field of oil and gas field exploitation, in particular to a fluid identification method and device. Background technique [0002] Reservoirs refer to rock formations with interconnected pores that can store and infiltrate oil and gas. At present, in the process of oil and gas field development, it is usually necessary to identify the fluids in the reservoir. The fluids in the reservoir include water, oil and natural gas, etc., and the oil and gas production can only be carried out after the fluid in the reservoir is determined not to be water. [0003] Since different fluids in the reservoir have different geological properties, the type of fluid in the reservoir can be determined according to the geological properties of the reservoir. For example, the type of fluid in the reservoir can be determined according to the water saturation of the reservoir. When the water saturation of the reservoir is higher than the...

Claims

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Application Information

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IPC IPC(8): G01V1/30G01V1/40
CPCG01V1/30G01V1/40
Inventor 谢冰赵路子赖强王跃祥赵艾琳肖柏夷
Owner PETROCHINA CO LTD
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