Unlock instant, AI-driven research and patent intelligence for your innovation.

Evaluation method of formation undercompaction and hydrocarbon generation pressurization

An evaluation method and formation pressure technology, applied in the field of oil and gas geological exploration, can solve the problems of complex quantitative evaluation methods, and achieve the effect of simple and fast evaluation methods

Active Publication Date: 2020-03-24
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that only qualitative evaluation or quantitative evaluation methods are complicated in the prior art, the present invention proposes a simple and fast quantitative evaluation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Evaluation method of formation undercompaction and hydrocarbon generation pressurization
  • Evaluation method of formation undercompaction and hydrocarbon generation pressurization
  • Evaluation method of formation undercompaction and hydrocarbon generation pressurization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] Taking the Shahejie Formation in the Dongpu Sag as an example, the evaluation method of formation undercompaction and hydrocarbon generation pressurization, such as figure 1 shown, including the following steps:

[0026] S1. Analyze the relationship between formation deposition rate and formation overpressure, and the relationship between source rock vitrinite reflectivity and overpressure. The specific steps are as follows:

[0027] S11. Analysis of the relationship between overpressure and formation deposition rate: count the thickness of single well formation and the start time of formation deposition, calculate the formation deposition rate in each period, analyze the relationship between formation deposition rate and formation overpressure, and judge formation underpressure The degree of development of supercharging;

[0028] S12. Analysis ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an evaluation method for stratum under compaction and hydrocarbon generation pressurization. An ordinary pressure stratum vertical effective stress-formation resistivity relational trend line can be fitted by building a vertical effective stress-formation resistivity relationship plate; and quantitative evaluation can be performed on stratum under compaction and hydrocarbongeneration pressurization by drawing overpressure stratum data in the plate and comparing with the ordinary pressure stratum vertical effective stress-formation resistivity relational trend line. Theevaluation method is simple and fast.

Description

technical field [0001] The invention relates to the field of oil and gas geological exploration, in particular to an evaluation method for formation undercompaction and hydrocarbon generation pressurization. Background technique [0002] As a common phenomenon in sedimentary basins, abnormal pressure is closely related to oil and gas generation, migration and accumulation. In low-permeability tight formations, the development mechanism of fluid overpressure is closely related to stress (compaction disequilibrium and structural extrusion), fluid volume expansion (hydrocarbon generation, clay mineral dehydration, and hydrothermal pressurization), and fluid flow. . Early studies generally believed that undercompaction was the main reason for the formation of large-scale overpressure in sedimentary basins. Undercompaction mainly occurred in the early shallow burial stage of basin subsidence, and was controlled by faster deposition rate and lower formation permeability. . Hydr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/38
CPCG01V3/38
Inventor 刘景东蒋有录刘桃刘蕊宁
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)