Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for determining carbonate reservoir saturability

A carbonate reservoir, saturation technology, applied in earthwork drilling, wellbore/well components, etc., can solve problems such as large calculation errors, and achieve the effect of a reliable calculation method

Inactive Publication Date: 2015-07-22
付茜
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many factors that affect the resistivity. Therefore, the water saturation value calculated by the formula is prone to large calculation errors without considering other influencing factors.

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
  • Method for determining carbonate reservoir saturability
  • Method for determining carbonate reservoir saturability
  • Method for determining carbonate reservoir saturability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The method for determining the saturation of carbonate rock reservoirs in the present invention will be described in detail by taking a certain oil reservoir in XX group in XX basin.

[0028] Step 1: Establishment of J function of capillary pressure in carbonate reservoir

[0029] J ( S wn ) = ( H w - H ow ) ( ρ w - ρ 0 ) gC σ cos θ K φ + ln ...

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 relates to a method for determining carbonate reservoir saturability. The method for determining the carbonate reservoir saturability is applied to the determination of heterogeneous carbonate reservoir water saturability. Firstly, a carbonate reservoir saturability capillary tube pressure function is established, standardization is performed on the carbonate reservoir oil-water transition zone electric-log interpretation water phase saturability of each oil well, then polynomial regression is performed with the capillary tube pressure J function, and an iteration method is used to determine the carbonate reservoir saturability. The method for determining the carbonate reservoir saturability has the advantage that a reasonable and reliable calculation method is provided for the calculation of the heterogeneous carbonate reservoir water saturability lack of core data.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a method for determining the saturation of carbonate reservoirs. Background technique [0002] The key to 3D reservoir geological modeling is how to determine the original water saturation, which is of great significance to reservoir dynamic evaluation, reserve calculation, and development plan formulation. Accurately calculating the saturation of heterogeneous carbonatite reservoirs has always been a major problem in logging interpretation work in the absence of sealed coring and other data to directly determine the water saturation of cores. Due to changes in geological movement, the reservoir pore structure and fluid parameters will change greatly, and the capillary pressure data obtained by mercury injection method cannot accurately calculate the original water saturation. At the same time, in the past, the saturation of carbonatite reservoirs was mostl...

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
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 付茜
Owner 付茜
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products