Method capable of fast explaining and evaluating reservoir fluid properties

A fast technology for reservoir fluid properties, applied in the direction of earthwork drilling and production, wellbore/well components, etc., can solve the problem that the interpretation method of gas logging data is not suitable for interpretation coincidence rate, etc., and achieves the effect of wide application range

Active Publication Date: 2012-01-11
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 48 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is aimed at the above-mentioned present situation, aims to provide a kind of method that can solve the problem that the interpre

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 capable of fast explaining and evaluating reservoir fluid properties
  • Method capable of fast explaining and evaluating reservoir fluid properties
  • Method capable of fast explaining and evaluating reservoir fluid properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] refer to figure 1 , the present invention utilizes mud logging devices such as comprehensive mud logging instrument, time-drilling instrument, gas measuring instrument, ROPs and total hydrocarbon abnormal value Ct of the reservoir formation measured while drilling, and the caprock (non-reservoir formation) adjacent to the reservoir formation ) Drilling time average ROPn and total hydrocarbon group value Cb.

[0023] Time-drilling instrument, gas measuring instrument, comprehensive mud logging instrument and other mud logging devices adopt existing drilling and mud logging equipment. Acquisition and recording During mud logging drilling, it is the time it takes for the drill bit to penetrate 1m, and the dimension is min / m. point / 0.5m.

[0024] The identification and specific evaluation steps are as follows:

[0025] 1) Read the ROPs (min / m) during drilling in the reservoir, take the minimum effective value of the reservoir, and eliminate the drilling data affected by ...

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 capable of fast explaining and evaluating reservoir fluid properties. The logging drilling time and the total hydrocarbon and hydrocarbon components are collected and recorded through a drilling time instrument, a gas logging instrument, an integral logging instrument and other logging devices. The total hydrocarbon value Ct (percent) of the maximum effective value of a reservoir is obtained, and the total hydrocarbon average value, i.e. the basic value Cb (percent) of a cover layer of 5m to 20m above the reservoir is selected. The drilling time specific value RROP of the reservoir is calculated by the cover layer drilling time ROPn and the reservoir drilling time ROPs. The hydrocarbon contrast coefficient Kc is calculated by the total hydrocarbon value Ct (percent) and the basic value Cb (percent). RROP-Kc patterns are drawn through data points of an oil gas layer, a hydrocarbon-containing water layer and a dry layer after oil test verification according to region statistics, boundary lines AB and CD and three regions of the oil gas layer, the hydrocarbon-containing layer and the dry layer are determined according to the data statistics principle, regions of the data points in the RROP-Kc patterns are corresponding fluid explaining and evaluating results. The method is applied to more than two thousand wells in Jianghan oil regions, and the regional coincidence rate is higher than 85 percent. The method is applied in low-resistance oil gas layers, fractured oil gas layers and shale gas layers, particularly weak oil gas display and single component display layers.

Description

technical field [0001] The patent of the invention relates to a method capable of quickly identifying and evaluating reservoir fluid properties, which is mainly used for real-time measurement of underground reservoir porosity while drilling during drilling and mud logging, and provides key parameters for reservoir evaluation. Background technique [0002] Mud logging is an important means of oil exploration and development. Gas logging is an important branch of mud logging. It is used to record drilling time and natural gas composition data during the drilling process. These data can be used to explain the properties of reservoir fluids with gas logging abnormalities in the underground and provide a basis for exploration and development decisions. . This mud logging method has unique technical advantages in the identification and evaluation of oil and gas layers, especially in the identification and evaluation of low-resistivity oil and gas layers, fractured oil and gas lay...

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
Inventor 魏大农冯爱国石元会叶应贵赵红燕
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap