Integrated composite emulsion type clean fracturing fluid capable of being blended on line and preparation method thereof

A technology for cleaning fracturing fluid and compound emulsion, which is applied in the field of integrated compound emulsion type clean fracturing fluid and its preparation, can solve the problems of large manpower, material resources, and financial resources, complex fluid preparation process, low proppant concentration, etc. , to achieve a wide range of industrial value, simplify the liquid dispensing process, and the effect of simple formula

Inactive Publication Date: 2018-06-01
CHENGDU LEARN PRACTICES TECH CO LTD
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing fracturing fluid system is composed of guar gum pressure fluid and artificial polymer fracturing fluid. The fracturing fluid is generally composed of reducing water and jelly fracturing fluid. The reducing water fracturing can form complex fracture network, but the support If the concentration of the agent is low, the conductivity of the formed fractures is poor, and the gel fracturing fluid has a strong sand-carrying ability, but the viscosity of the system is high, and the construction friction is high
[0003] At this stage, the additives of the water-resistance-resistance and jelly fracturing fluids are different, and in order to meet the different needs of the reservoir, there are many types of additives, and it is difficult to control the quality of each additive. At the same time, it is necessary to Prepare the water resistance and gel fracturing and store it in the liquid storage tank. The liquid preparation process is also complicated and requires a lot of manpower, material resources, and financial resources. This process is not conducive to the "industrialization" of shale gas platform wells. "Operation

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
  • Integrated composite emulsion type clean fracturing fluid capable of being blended on line and preparation method thereof
  • Integrated composite emulsion type clean fracturing fluid capable of being blended on line and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The integrated compound emulsion type clean fracturing fluid that can be mixed online provided in this example is made from the following components in terms of mass fraction: slick water consists of 0.08% emulsion thickener, 0.15% drainage aid, 0.35 % of the clay stabilizer and the balance of water;

[0045] The linear glue is composed of 0.6% emulsion thickener, 0.15% drainage aid, 0.35% clay stabilizer and the rest of water;

[0046] The cross-linked glue is composed of 0.6% emulsion thickener, 0.4% cross-linking agent, 0.15% drainage aid, 0.35% clay stabilizer and the rest of water;

[0047] The emulsion thickener includes water-soluble polyacrylamide polymers and derivatives thereof, with a molecular weight of 5 million;

[0048] The crosslinking agent includes sodium dodecylbenzenesulfonate.

Embodiment 2

[0050] The integrated compound emulsion type clean fracturing fluid that can be mixed online provided in this example is made from the following components in terms of mass fraction: slick water consists of 0.04% emulsion thickener, 0.1% drainage aid, 0.3 % of the clay stabilizer and the balance of water;

[0051] The linear glue is composed of 0.12% emulsion thickener, 0.1% drainage aid, 0.3% clay stabilizer and the rest of water;

[0052] The cross-linked glue is composed of 0.12% emulsion thickener, 0.2% cross-linking agent, 0.1% drainage aid, 0.3% clay stabilizer and the rest of water;

[0053] The emulsion thickener includes water-soluble polyacrylamide polymers and derivatives thereof, with a molecular weight of 30 million;

[0054] The crosslinking agent includes organic titanium crosslinking agent.

[0055] The crosslinking agent provided in this embodiment is mainly made of the following components in parts by weight:

[0056] Water-soluble high-valent metal salt: ...

Embodiment 3

[0065] The integrated compound emulsion type clean fracturing fluid that can be mixed online provided in this example is made from the following components in terms of mass fraction: slick water consists of 0.12% emulsion thickener, 0.4% drainage aid, 0.5 % of the clay stabilizer and the balance of water;

[0066] The linear glue is composed of 1% emulsion thickener, 0.4% drainage aid, 0.5% clay stabilizer and the rest of water;

[0067] The cross-linked glue is composed of 1% emulsion thickener, 0.8% cross-linking agent, 0.4% drainage aid, 0.5% clay stabilizer and the rest of water;

[0068] The emulsion thickener includes water-soluble polyacrylamide polymers and derivatives thereof, with a molecular weight of 10 million;

[0069] The crosslinking agent includes organic zirconium crosslinking agent.

[0070] The crosslinking agent provided in this embodiment is mainly made of the following components in parts by weight:

[0071] Water-soluble high-valent metal salt: 4 par...

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 an integrated composite emulsion type clean fracturing fluid capable of being blended on line and a preparation method thereof. A low-concentration emulsion thickening agent which has good resistance reduction performance and cross-linked rubber which is formed by cross-linking of a high-concentration emulsion thickening agent and has good sand-carrying performance are utilized for preparing the integrated composite emulsion type clean fracturing fluid capable of being blended on line. The system is characterized in that the low-concentration emulsion thickening agent isadopted to prepare slick water, the high-concentration emulsion thickening agent is adopted to prepare linear rubber, and the linear rubber is combined with a cross-linking agent to form the cross-linked rubber, thereby realizing multi-purpose effects of one emulsion thickening agent. Compared with the existing composite fracturing fluid, the integrated composite emulsion type clean fracturing fluid system capable of being blended on line, provided by the invention, has the advantages that the formula is simple, the types of additives are few, continuous blending can be realized under the condition that the fluid does not need to be prepared in advance during construction, the quantity of on-site fluid storage tank groups is reduced, and fluid preparation processes can be simplified and alot of cost can be saved during fracturing construction. Other properties of the system are not weaker than those of existing other products.

Description

technical field [0001] The invention relates to the technical field of oil and gas field reservoir transformation, in particular to an integrated composite emulsion type clean fracturing fluid capable of being mixed online and a preparation method thereof. Background technique [0002] Unconventional oil and gas resources such as shale gas at home and abroad are abundant, but most of them are low and ultra-low permeability oil and gas reservoirs, so fracturing must be carried out to increase oil and gas production. Fracturing is a technological process to modify the seepage characteristics of oil layers, and it is an important technological measure for increasing the production of oil and gas wells and increasing the injection of solvent injection wells. Fracturing fluid is the main fluid in reservoir stimulation. The performance of the fracturing fluid directly affects the fracturing effect and the injection-production capacity of the well. The existing fracturing fluid s...

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): C09K8/68
CPCC09K8/685
Inventor 寇将郭建春卢聪侯向前任山张绍彬唐朝钧王梦莹赵彦兵
Owner CHENGDU LEARN PRACTICES TECH 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