Low-temperature sand-prevention resin coated propping agent for oil-gas well and preparation method of low-temperature sand-prevention resin coated propping agent

A low-temperature sand control and proppant technology, which is applied in chemical instruments and methods, earthwork drilling, wellbore/well components, etc., can solve the problems affecting the flow conductivity of proppant, the amount of resin used, and the low consolidation strength, etc., to achieve Improve the anti-breaking ability and interface performance, the effect of simple construction technology and low cost

Active Publication Date: 2015-03-25
BEIJING QISINTAL NEW MATERIAL
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems in the above-mentioned prior art that the curing temperature of the curable proppant is lower than 40°C, the consolidation strength is low, the sand control fails, and the amount of resin is large, which affects the conductivity of the proppant, a low-temperature sand control is developed. Resin-coated proppant and its preparation method, the proppant can be sticky and bonded in water below 40°C, and the bonding strength of the bonded proppant is greater than 1.5MPa

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
  • Low-temperature sand-prevention resin coated propping agent for oil-gas well and preparation method of low-temperature sand-prevention resin coated propping agent
  • Low-temperature sand-prevention resin coated propping agent for oil-gas well and preparation method of low-temperature sand-prevention resin coated propping agent
  • Low-temperature sand-prevention resin coated propping agent for oil-gas well and preparation method of low-temperature sand-prevention resin coated propping agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Sulfonate polyester synthesis example 1: 2.52 kilograms of sodium dimethyl sulfonate isophthalate, 16.13 kilograms of isophthalic acid, 10.6 kilograms of diethylene glycol, 22.36 kilograms of neopentyl glycol and 50 kilograms of zinc acetate Add gram into the reaction kettle, protect it with nitrogen, heat up to 120°C and start stirring, heat to 140-160°C and keep it for one hour, gradually raise the temperature to 170°C, keep it at 170-175°C, when the acid value is less than 90mgKOH / g and the reactant When it is completely clear and transparent, cool down to 140°C, add 28.76kg of phthalic anhydride and 2.35kg of trimethylolpropane, raise the temperature to 140-160°C for one hour, then gradually raise the temperature to 190°C, and control the internal temperature during the heating process to not exceed 103°C , heat preservation at 190-210°C, when the acid value is less than 60mgKOH / g, vacuumize until the acid value drops to 9mgKOH / g, and the softening point of the obtai...

Embodiment 2

[0032] Sulfonate polyester synthesis example 2: 4.02 kilograms of sodium sulfonate isophthalate, 15.77 kilograms of isophthalic acid, 9.31 kilograms of ethylene glycol, 17.16 kilograms of neopentyl glycol and 28 grams of dibutyltin oxide were added to the reaction In the kettle, protect it with nitrogen, raise the temperature to 120°C and start stirring, heat to 140-160°C and keep it for one hour, gradually raise the temperature to 170°C, keep it at 170-175°C, and cool down to 160°C when the acid value is less than 90mgKOH / g. Add 31.54 kg of isophthalic acid and 1.38 kg of glycerol, raise the temperature to 140-160°C and keep it warm for one hour, then gradually raise the temperature to 190°C. When the acid value is less than 60mgKOH / g, vacuumize until the acid value drops to 7mgKOH / g, and the obtained sulfonate polyester has a softening point of 105°C.

Embodiment 3

[0034] Sulfonate polyester synthesis example 3: 5.92 kilograms of sodium dimethyl sulfonate isophthalate, 15.49 kilograms of isophthalic acid, 3.72 kilograms of ethylene glycol, 20.8 kilograms of neopentyl glycol and 56 grams of zinc acetate were added to the reaction In the kettle, protect it with nitrogen, raise the temperature to 120°C and start stirring, heat to 140-160°C and keep it for one hour, gradually raise the temperature to 170°C, keep it at 170-175°C, and cool down to 160°C when the acid value is less than 90mgKOH / g. Add 27.63 kg of phthalic anhydride and 1.84 kg of glycerol, raise the temperature to 140-160°C for one hour, and gradually raise the temperature to 190°C. During the heating process, control the internal temperature to not exceed 103°C and keep it warm at 190-210°C. When the acid value is less than At 60mgKOH / g, vacuumize until the acid value drops to 6mgKOH / g, and the softening point of the obtained sulfonate polyester is 118°C.

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

PropertyMeasurementUnit
acid valueaaaaaaaaaa
softening pointaaaaaaaaaa
softening pointaaaaaaaaaa
Login to view more

Abstract

The invention relates to a low-temperature sand-prevention resin coated propping agent for an oil-gas well and a preparation method of the low-temperature sand-prevention resin coated propping agent. The low-temperature sand-prevention resin coated propping agent comprises a propping agent aggregate, a precuring reinforced resin membrane and a low-temperature sand-prevention resin membrane, wherein the precuring reinforced resin membrane is made of reinforced resin applied to the surface of the propping agent aggregate; the low-temperature sand-prevention resin membrane is made of low-temperature sand-prevention resin applied to the surface of reinforced resin; the reinforced resin is selected from epoxy resin and/or thermoplastic phenolic resin; the low-temperature sand-prevention resin is sulfonate polyester resin.

Description

technical field [0001] The invention relates to the fields of oil, natural gas and shale gas fracturing, in particular to a low-temperature sand-controlling resin-coated proppant and a preparation method thereof. Background technique [0002] In the process of oil and gas well exploitation and production stimulation, in order to prevent formation sand production, proppant embedding into formation, and proppant backflow and vomiting when oil and gas wells are put into production, phenolic resin-coated quartz sand or ceramsite proppant is currently used at home and abroad. Follow-up filling of fractured fractures. The advantage of using phenolic resin is that phenolic resin has good coating properties on quartz sand or ceramsite, and the product is stable in storage. When the formation temperature is higher than 70 ° C, the consolidation strength between the coated proppant particles is high, which can fully meet the requirements of preventing formation outbursts. Sand, propp...

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): C09K8/80
CPCC08G63/6886C09K8/805
Inventor 张伟民周万富李庆松陈文将蒙传幼谭建勇朱永刚
Owner BEIJING QISINTAL NEW MATERIAL
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