Reservoir reforming method

A technology for reservoir reconstruction and reservoir, which is applied in the field of oil and gas field exploration and development, can solve the problems affecting oil and gas recovery rate, reservoir fracturing, poor effect of tight oil and gas reservoir fracturing, etc., and achieve the best oil-conducting effect of fractures , the effect of improving the oil and gas recovery rate

Inactive Publication Date: 2015-05-06
PETROCHINA CO LTD
View PDF11 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing oil and gas wells are not combined with how to fracturing the reservoir during the design process, which makes the subsequent fracturing of tight oil and gas reservoirs less effective and affects the oil and gas recovery rate

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 reforming method
  • Reservoir reforming method
  • Reservoir reforming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] see figure 1 , the embodiment of the present application provides a reservoir stimulation method, which includes the following steps.

[0013] Step S10: measuring the maximum horizontal principal stress and the minimum horizontal principal stress of the predetermined reservoir.

[0014] In this embodiment, firstly, a geographical area with tight oil and gas reservoirs is selected, and the predetermined reservoir may be a reservoir that is a target of oil and gas production.

[0015] In this embodiment, the technical solution disclosed in Chinese patent ZL01810035.X can be used to measure the maximum horizontal principal stress and the minimum horizontal principal stress.

[0016] Step S20: drilling a horizontal well including a vertical section and a horizontal section, the angle between the trajectory of the horizontal section and the maximum horizontal principal stress or the minimum horizontal principal stress ranges from 30 to 60 degrees.

[0017] In this embodime...

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 a reservoir reforming method. The reservoir reforming method includes the steps that the maximum horizontal principle stress and the minimum horizontal principle stress of a predetermined reservoir are measured; a horizontal well comprising a vertical section and a horizontal section is drilled, wherein the included angle between the track of the horizontal section and the maximum horizontal principle stress or the minimum horizontal principle stress ranges from 30 degrees to 60 degrees; a well completion procedure is executed; the predetermined reservoir is cracked so that a crack can be formed in the predetermined reservoir in the direction of the maximum horizontal stress. At the initial design stage, in consideration of the possible extension direction of the crack when the reservoir is cracked, the included angle between the extension direction of the horizontal section and the maximum horizontal principle stress or the minimum horizontal principle stress of the predetermined reservoir is made to range from 30 degrees to 60 degrees, so that the horizontal well has good experience completeness and a good oil-guiding effect of the crack, and then the oil and gas production rate is easily increased.

Description

technical field [0001] The application relates to the technical field of oil and gas field exploration and development, in particular to a method for reservoir reconstruction. Background technique [0002] Tight sandstone oil is the most conventional type of tight oil, specifically referring to continuous oil accumulation in tight sandstone reservoirs. Tight oil refers to oil produced in low porosity and low permeability rock reservoirs. Tight oil exists in the organic-rich and extremely low-permeability carbonate rock, argillaceous siltstone and sandstone interlayer systems in the state of adsorption and free, forming self-generated and self-storage, continuous distribution of oil accumulation. [0003] Because tight oil and gas resources are different from conventional oil and gas resources, they cannot be exploited by traditional oil and gas extraction methods, and most often require reservoir reconstruction to achieve economical and effective development. When developi...

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 Applications(China)
IPC IPC(8): E21B43/267E21B49/00E21B7/04
CPCE21B43/267E21B7/04E21B49/00
Inventor 才博丁云宏赵贤正卢拥军张仲宏张绍礼杨振周金凤鸣沈华王欣王立伟何春明段贵府
Owner PETROCHINA CO LTD
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