Study method for reservoir formation possibility of basin-edge negative structure

Abstract

The invention provides a study method for reservoir formation possibility of a basin-edge negative structure. The study method for reservoir formation possibility of the basin-edge negative structurecomprises the following steps: step 1, fluid inclusion samples are collected from a target-interval reservoir, and oil-gas accumulation stage of a study area is determined according to measurement andanalysis of homogenization temperature of fluid inclusion; step 2, sand body distribution laws are determined through paleostructure restoration and sedimentary reservoir analysis, so that oil-gas migration directions, oil-gas transport systems and maximum ranges of oil-gas in different reservoir formation stages are determined; step 3, possible oil-gas accumulation zones are predicted accordingto the oil-gas migration laws in the reservoir formation stages obtained in step 2 in combination with the existing favorable trap analysis. The study method for reservoir formation possibility of thebasin-edge negative structure is an effective study method which has practical operability and integrates all geological factors, and the problem about reservoir formation possibility of the basin-edge negative structure is solved.

Description

technical field

[0001] The invention belongs to the field of petroleum exploration, and relates to a method for studying the possibility of basin margin negative structural accumulation. Background technique

[0002] After more than 50 years of exploration in the Jiyang Depression, the main body of the sag has entered the stage of high exploration degree. The basin margin sags distributed on the edges of the main sags have gradually become key exploration areas, and the basin margin sags have certain oil and gas resource potential. According to the new A round of oil and gas resource evaluation shows that it has a potential of nearly 500 million tons of oil and gas resources. Therefore, oil and gas prediction of basin margin negative structures will become an urgent problem to be solved. Basin margin sags generally have the characteristics of shallow burial and small area, poor hydrocarbon generation ability, weak source foundation, and sag-controlling faults block oil and ...

Examples

Embodiment Construction

[0017] In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and understandable, the preferred embodiments are specially cited below, together with the accompanying drawings, to be described in detail as follows:

[0018] like figure 1 as shown, figure 1 It is a flow chart of the method for studying the possibility of basin-margin negative structure accumulation in the present invention.

[0019] In step 101, the samples collected in the reservoir of the target interval are pretreated. Generally, the samples collected initially are cores or cuttings. The cores are ground into thin slices, and the cuttings are screened out of quartz particles, which are then bonded into thin slices.

[0020] In step 102, fluid inclusion samples are collected from the reservoir of the target interval, and the oil and gas accumulation period in the study area is determined through the measurement and analysis of the uniform temperat...

technical field

[0001] The invention belongs to the field of petroleum exploration, and relates to a method for studying the possibility of basin margin negative structural accumulation. Background technique

[0002] After more than 50 years of exploration in the Jiyang Depression, the main body of the sag has entered the stage of high exploration degree. The basin margin sags distributed on the edges of the main sags have gradually become key exploration areas, and the basin margin sags have certain oil and gas resource potential. According to the new A round of oil and gas resource evaluation shows that it has a potential of nearly 500 million tons of oil and gas resources. Therefore, oil and gas prediction of basin margin negative structures will become an urgent problem to be solved. Basin margin sags generally have the characteristics of shallow burial and small area, poor hydrocarbon generation ability, weak source foundation, and sag-controlling faults block oil and ...

Examples

Embodiment Construction

[0017] In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and understandable, the preferred embodiments are specially cited below, together with the accompanying drawings, to be described in detail as follows:

[0018] like figure 1 as shown, figure 1 It is a flow chart of the method for studying the possibility of basin-margin negative structure accumulation in the present invention.

[0019] In step 101, the samples collected in the reservoir of the target interval are pretreated. Generally, the samples collected initially are cores or cuttings. The cores are ground into thin slices, and the cuttings are screened out of quartz particles, which are then bonded into thin slices.

[0020] In step 102, fluid inclusion samples are collected from the reservoir of the target interval, and the oil and gas accumulation period in the study area is determined through the measurement and analysis of the uniform temperat...

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