Method and device for determining productivity of tight gas reservoir fracturing gas well

A determination method and technology for tight gas, which is applied in earth-moving drilling, wellbore/well components, and production fluids, etc., can solve the problems of inaccurate calculation results and the calculation method of fracturing gas well productivity is not considered, and achieve the effect of accurate productivity.

Pending Publication Date: 2020-05-22
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method and device for determining the productivity of fracturing gas wells in tight gas reservoirs, so as to solve the problem that the current calculation method of fracturing gas well productivity does not consider regional differences, resulting in inaccurate calculation results

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 and device for determining productivity of tight gas reservoir fracturing gas well
  • Method and device for determining productivity of tight gas reservoir fracturing gas well
  • Method and device for determining productivity of tight gas reservoir fracturing gas well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.

[0036] Embodiment of the method for determining the productivity of a fractured gas well in a tight gas reservoir according to the present invention

[0037]In the present invention, the reservoir of the fracturing gas well is divided into two parts, the fracturing and reconstruction area and the original reservoir area. For different parts, different productivity equations are established according to different reservoir properties and fluid seepage characteristics. In the fracturing and reconstruction area, consider The productivity equation is established based on the stress sensitivity of high-speed non-Darcy flow and fractured reservoirs. In the original reservoir area, the productivity equation is established according to the threshold pressure gradient, tight reservoir stress sensitivity and gas phase slippage effect; finall...

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 and device for determining productivity of a tight gas reservoir fracturing gas well, and belongs to the technical field of oil and gas field development. The seepagecharacteristics that after fracturing transformation of the tight gas reservoir fracturing gas well, regional differentiation exists are sufficiently considered, a reservoir is divided into a fracturing transformation area and an original storage area, according to different percolation mechanisms, high-speed non darcy seepage, cracks and stress sensitivity, starting pressure gradient and gas phase slippage factors of a conventional reservoir are considered inside, and according to gas seepage flow models of different areas, the productivity of the fracturing gas well can be calculated. Compared with a conventional productivity calculation method, the obtained productivity of the fracturing gas well is more accurate, and the method can more responds to the actual productivity condition ofthe gas well.

Description

technical field [0001] The invention relates to a method and a device for determining the productivity of a fracturing gas well in a tight gas reservoir, belonging to the technical field of oil and gas field development. Background technique [0002] With the continuous development of the oil and gas industry, conventional oil and gas resources and reserves are decreasing day by day, and the development focus of the oil and gas industry has gradually shifted to unconventional oil and gas resources such as tight oil / gas and shale oil / gas. Especially for tight gas reservoirs, due to the needs of environmental protection and the support of the national natural gas development strategy, the exploration and development of tight gas reservoirs has achieved rapid development in recent years. However, unlike conventional gas reservoirs, tight gas reservoirs are tight, with narrow pore throats and strong heterogeneity, and the fluid seepage ability in the reservoir is extremely poor,...

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): E21B47/00E21B43/26G06Q50/02
CPCE21B47/00E21B43/26G06Q50/02
Inventor 丁景辰曹桐生吴建彪张占杨郭辉杨帆路建欣郝廷周淑娟马雪娟周家林
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