A Method for Determining Oil and Gas Reserves of Steep Slope Sand Body Type Convergence Ridge

Abstract

A method for determining the oil and gas reserves of the steep-slope sandbody-type converging ridge. The method includes the following steps: determining the influencing factors of the oil and gas reserves of the steep slope sandbody-type converging ridge includes five influencing factors: the area of ​​the converging ridge sand body, the hydrocarbon generation intensity of the source rock, the amplitude of the converging ridge, the porosity of the converging ridge, and the thickness of the converging ridge; The influence factors are modeled in a weighted way, and their comprehensive prediction model is established; the established model is simulated to determine the oil and gas reserves of the steep slope sand body type convergence ridge. The specific path is: Substitute the five factors of the steep slope sand body type convergence ridge into The comprehensive prediction formula established in the second step: B=a(a 1 S 3 +a 2 S 2 +a 3 S 1 +a 4 )+b(b 1 T 3 +b 2 T 2 +b 3 T+b 4 )+c(c 1 θ 3 +c 2 θ 2 +c 3 θ+c 4 )+d(d 1 φ 3 +d 2 φ 2 +d 3 φ+d 4 )+e(e 1 h 3 +e 2 h 2 +e 3 H+e 4 ), the calculated B value is the oil and gas reserves of the determined steep-slope sandbody-type converging ridge. The method can effectively determine the oil and gas reserves of the deep steep-slope sand body-type converging ridge, overcome the disadvantage of less drilling data, and reduce the experimental workload.

Description

Technical field: [0001] The invention relates to the technical field of oil and gas exploration tests, in particular to a method for simulating and predicting the oil and gas reserves of deep steep slope sand body type converging ridges, which is used to predict the oil and gas reserves of deep steep slope sand body type converging ridges and to study deep steep slope sand body converging ridges Corresponding to the law of shallow oil and gas enrichment and accumulation. Background technique: [0002] The hydrocarbon generation threshold refers to the minimum temperature (depth) required for the kerogen in source rocks to generate a large amount of hydrocarbons. Affected by the geothermal gradient, the burial depth increases and the ground temperature rises. Therefore, only when the burial depth reaches a greater depth and the ground temperature reaches the hydrocarbon generation threshold, oil and gas will start to generate in large quantities, which results in the phenomen...

AI Technical Summary

Problems solved by technology

Steep slope sand body convergence ridge is an important way of hydrocarbon accumulation under the coupling of oil and gas depth. At present, there is no research on the influencing factors of deep steep slope sand body type convergence ridge in the public literature, and there is a lack of reasonable and high-fitting models for predicting oil and gas reserves.

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