Elastic flow channel regulating particles and preparation method thereof

An elastic and granular technology, applied in the field of elastic flow regulating particles and their preparation, can solve problems such as water channeling in weathering crust reservoirs, and achieve the effects of improving product value, easy operation and simple preparation method

Active Publication Date: 2018-09-25
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of elastic regulating particle and preparation method thereof, thus solve the problem of water channeling in the surface weathering crust reservoir of fracture-cavity carbonate reservoir

Method used

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  • Elastic flow channel regulating particles and preparation method thereof
  • Elastic flow channel regulating particles and preparation method thereof
  • Elastic flow channel regulating particles and preparation method thereof

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preparation example Construction

[0034] The second aspect of the present invention provides a method for preparing elastic flow-regulating particles, including: (1) heating sulfur to completely melt into a liquid to obtain liquid sulfur; (2) mixing the liquid sulfur with crude vegetable oil or oil bottoms evenly, Then, the reaction is carried out by raising the temperature to obtain solid sulfur rubber particles; (3) granulating and sorting the solid sulfur rubber particles to obtain elastic flow regulating particles.

[0035] In a preferred embodiment, the preparation method of the elastic flow regulating particles of the present invention comprises the following steps:

[0036] In the first step, sulfur is heated to 130°C to 150°C to completely melt it into a liquid to obtain liquid sulfur.

[0037] Sulfur is a light yellow brittle crystal or powder in appearance. It has a wide range of sources and can be obtained in desulfurization treatment and recovery of various oil and gas fields with high hydrogen sul...

Embodiment 1

[0047]Add 50g of industrial sulfur into a 250mL beaker, start the stirrer, the temperature rises to 140°C, and after it is completely melted into a liquid, add 52.5g of vegetable crude oil preheated to 140°C, continue stirring at 140°C for 0.5 hours, and raise the temperature to 180°C (heating frequency 2.0°C / min), constant temperature reaction for 0.45h to obtain solid sulfur rubber, after cooling, crush and sort to obtain particles with a particle size of 1-2 mm, namely to obtain elastic flow regulating particles of sulfur rubber 1.

Embodiment 2

[0049] Add 60g of industrial sulfur into a 250mL beaker, start the stirrer, and raise the temperature to 150°C. After it is completely melted into a liquid, add 40g of vegetable crude oil preheated to 150°C, continue stirring at 150°C for 0.3 hours, and then heat up to 180°C ( Heating frequency 3.0°C / min), constant temperature reaction for 0.5h, to obtain sulfur rubber solid, after cooling, crush and sort particles with a particle size of 3-5mm, and obtain sulfur rubber elastic flow-regulating particles 2.

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Abstract

The present invention provides an elastic flow channel regulating particles which are a substance of the general formula (I), wherein Gt is triglyceride, and n is from 1 to 6. The invention also provides a preparation method of the elastic flow channel regulating particles. The method comprises the steps of: (1) heating sulfur until the sulfur is completely melt into a liquid to obtain liquid sulfur; (2) fully mixing the liquid sulfur with vegetable crude or oil foot, and then heating the mixture and performing a reaction to obtain solid sulfur rubber particles; and (3) granulating and sortingthe solid sulfur rubber particles to obtain the elastic flow channel regulating particles.

Description

technical field [0001] The invention relates to an oilfield chemical agent, in particular, the invention relates to an elastic flow-regulating particle for fracture-cavity reservoirs and a preparation method thereof. Background technique [0002] Carbonate reservoirs are mainly composed of surface weathering crust, underground river karst caves, and fault-controlled karst. The reservoirs are characterized by deep burial, strong heterogeneity, strong bottom water, and rapid natural decline in oil reserves. As a result, the degree of secondary recovery is limited and the overall recovery rate is low. In the natural energy recovery process of carbonate reservoirs, the overall characteristics are short spontaneous injection period, short anhydrous oil production period, and rapid energy decline. Secondary oil recovery mainly supplements formation energy through gas injection and water injection, and taps remaining oil between potential wells through gas injection and water inje...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/16C09K8/508C09K8/516
CPCC08G75/16C09K8/5086C09K8/516C09K2208/18
Inventor 杨祖国高秋英何龙赵海洋任波焦保雷曹畅张亚刚刘磊艾克热木·牙生程仲富邢钰范伟东
Owner CHINA PETROLEUM & CHEM CORP
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