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

Continental facies shale oil reservoir fracturing sand adding method

A shale oil and fracturing technology, applied in the field of oil exploration and development fracturing engineering, can solve the problems of high construction cost, low sand carrying efficiency, low sand ratio, etc. The effect of water pressure

Pending Publication Date: 2022-06-07
PETROCHINA CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The sand ratio of this sand adding method is low, the sand carrying efficiency is low, and the construction cost is high

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
  • Continental facies shale oil reservoir fracturing sand adding method
  • Continental facies shale oil reservoir fracturing sand adding method
  • Continental facies shale oil reservoir fracturing sand adding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this disclosure. Rather, they are merely examples of approaches consistent with some aspects of the present disclosure as recited in the appended claims.

[0041] First, the terms involved in the embodiments of the present application are introduced.

[0042] Fracturing: In the field of petroleum, fracturing refers to a method of using hydraulic action to form cracks in oil and gas layers during oil or gas production, also known as hydraulic fracturing. Fracturing is to artificially create cracks in the formation, improve the flow environment of oil in the grou...

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 continental facies shale oil reservoir fracturing sand adding method, and relates to the technical field of petroleum exploration and development fracturing engineering. The method comprises the following steps: pumping prepad fluid; pumping in a first step type slug continuous sand adding period; the first stepped slug continuous sand adding period comprises one of a three-stepped slug continuous sand adding period and a four-stepped slug continuous sand adding period; the three-step slug continuous sand adding period comprises three sand adding stages, and the four-step slug continuous sand adding period comprises four sand adding stages. The method can improve the sand carrying rate of liquid, reduce the construction cost and relieve the water pressure for large-scale fracturing.

Description

technical field [0001] The present disclosure relates to the technical field of oil exploration and development fracturing engineering, in particular to a method for fracturing and sanding of continental shale oil reservoirs. Background technique [0002] In the field of petroleum, fracturing refers to a method of using hydraulic action to form cracks in oil and gas layers during the process of oil or gas production, also known as hydraulic fracturing. Fracturing is to artificially create cracks in the formation, improve the flow environment of oil in the ground, and increase the production of oil wells. [0003] In oil exploration and development of shale reservoir fracturing and sanding construction, the single-segment sanding process is often used, that is, after pumping a certain pre-fluid, a sanding stage and a follow-up isolation fluid stage are divided into a section The sand-adding cycle, multi-cycle alternates to the later stage of construction, starts to add sand ...

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): E21B43/26E21B43/267E21B49/00
CPCE21B43/26E21B43/267E21B49/00
Inventor 田福春刘学伟尹顺利邵力飞赵玉东张胜传陈紫薇贾云鹏隋向云构小婷闫阳石瑾张润泽赵涛
Owner PETROCHINA CO LTD