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

Reservoir bound and movable fluid distribution determination method, device and system

A technology of bound fluid and fluid distribution, applied in measurement devices, radio wave measurement systems, instruments, etc., can solve problems such as the inability to achieve continuous characterization of bound and movable fluid distribution in downhole formations, and the complexity of fluid distribution.

Active Publication Date: 2020-10-13
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, NMR centrifuge experiments can only measure limited core samples, and cannot achieve continuous characterization of downhole formation confinement and mobile fluid distribution
Although NMR logging can provide continuous T 2 distribution, but due to the complexity of fluid distribution in the formation, there is no effective method to obtain T based on NMR logging. 2 Accurate distribution enables continuous quantitative characterization of formation-bound and movable fluid distribution downhole

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
  • Reservoir bound and movable fluid distribution determination method, device and system
  • Reservoir bound and movable fluid distribution determination method, device and system
  • Reservoir bound and movable fluid distribution determination method, device and system

Examples

Experimental program
Comparison scheme
Effect test

specific example

[0093] Based on the solutions provided by the above embodiments, this specification also provides a specific example of applying the solutions of the above embodiments to characterize the distribution of bound fluid and movable fluid in the reservoir, as follows:

[0094] Collect 19 conventional sandstone samples and 19 tight sandstone samples in a certain research area, conduct NMR experimental measurements, and obtain T 2 distributed. It should be noted that the original T of conventional sandstone samples used in this example 2 Distribution contains both class I and class II T 2 distribution, the original T of tight sandstone samples used 2 The distribution contains only class I T 2 distributed.

[0095] Then, use the solutions provided in the above examples of this specification to predict the bound fluid and movable fluid distribution of conventional sandstone samples and tight sandstone samples, as follows:

[0096] Step 1: Collect the NMR echo data corresponding to...

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 embodiment of the invention discloses a method, device and system for determining reservoir constraint and movable fluid distribution. The method comprises the steps of: obtaining nuclear magnetic resonance echo data of a target work area, and performing inversion on the echo data to obtain original transverse relaxation time distribution data of the target work area; determining, according to whether the original transverse relaxation time distribution data contain a short relaxation peak, a type to which the original transverse relaxation time distribution data belong; processing the original transverse relaxation time distribution data according to a proportionality coefficient calculation model corresponding to the type to obtain constraint fluid and movable fluid; and respectively processing the original transverse relaxation time distribution data by using proportionality coefficients of the constraint fluid and the movable fluid to obtain constraint fluid distribution data and movable fluid distribution data of the target work area. By adopting various embodiments of the invention, continuous quantitative characterization of reservoir constraint fluid and movable fluid distribution can be accurately achieved.

Description

technical field [0001] The invention relates to the technical field of well logging data processing in petroleum exploration and development, in particular, to a method, device and system for determining reservoir confinement and movable fluid distribution. Background technique [0002] The distribution of bound fluid and movable fluid can directly reflect petrophysical properties such as microscopic pore structure characteristics and seepage capacity of rocks. In the exploration and development of oil and gas resources, the effective distribution characterization of bound fluid and movable fluid, especially the distribution characterization of movable fluid is an important basis for reservoir evaluation, productivity prediction and efficient development of reservoirs. Therefore, it is of great significance to study the distribution characterization methods of bound fluid and movable fluid in reservoirs. [0003] The transverse relaxation time (T 2 ) distribution can chara...

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): G01V3/32G01V3/38
CPCG01V3/32G01V3/38
Inventor 谢然红金国文肖立志
Owner CHINA UNIV OF PETROLEUM (BEIJING)