Process pipe column

A technology of process pipe string and pipe string, which is applied in the field of petroleum exploration, can solve the problems of low sand control efficiency, achieve good sand control effect, long sand control validity period, and improve seepage capacity

Active Publication Date: 2015-12-09
PETROCHINA CO LTD
View PDF9 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a process string to solve the technical problem of low sand control efficiency

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
  • Process pipe column
  • Process pipe column
  • Process pipe column

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] In order to enable those skilled in the technical field to which the application belongs to understand the application more clearly, the technical solutions of the application will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0029] Attached below figure 1 ~ attached Image 6 The process column of the present invention will be further described with examples.

[0030] The invention mainly includes two sets of process pipe strings, a sand control pipe string and a filling service pipe string. Wherein, the sand control string is set in the casing 2, and there is a first gap between the sand control string and the casing 2; the filling service string is set in the sand control string, and there is a gap between the filling service string and the sand control string. second gap.

[0031] attached figure 1 It is a schematic diagram of the sand control pipe string of the horizontal well pipe extrusion gravel pa...

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 discloses a process pipe column. The process pipe column comprises a sand prevention pipe column and a filling service pipe column. A reverse packer is installed at the bottom of the sand prevention pipe column and corresponds to a packer at the upper portion of the sand prevention pipe column, pressure balance is achieved in the high-pressure extrusion process, the sand prevention pipe column is prevented from displacing under the effect of high-pressure sand-carrying fluid, cooperation of a bottom filling tool and a filling server is guaranteed, gravel in a horizontal well pipe is effectively extruded for filling sand prevention work, sand prevention well completion is smoothly achieved, and an oil-gas field is efficiently developed. According to the process pipe column, a reservoir can be fractured, wide and short cracks can be formed in a near well-bore zone, the seepage capacity of the reservoir is greatly improved, the yield increase effect is achieved, the sand blocking radius is expanded to the reservoir, the sand prevention effect is better, and the sand prevention efficiency period is longer.

Description

technical field [0001] The present application relates to the field of petroleum exploration, in particular to a process string. Background technique [0002] At present, domestic horizontal well sand control is mostly based on screen completion. The screen can only prevent the formation sand from entering the production string, but cannot prevent the migration of the formation sand. The fine sand produced in the formation will fill the gap between the screen and the wellbore. In the annular space, the seepage area is reduced, the seepage resistance is increased, and the production is reduced. Moreover, the fine sand and mud produced in the formation often block the screen pipe, or even cause the screen pipe to leak, reducing the sand control validity period. [0003] In the completion of horizontal well casing circulating gravel packing, the screen is run into the screen after the casing is perforated, and the screen and wellbore annulus are filled with gravel. Although it ...

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): E21B43/04E21B43/08
Inventor 杨延征聂上振赵涛曲庆利袁照永秦飞翔王晓梅关月陆辉刘言理
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