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Self-suspension propping agent and preparation method thereof

A proppant and self-suspension technology, which is applied in chemical instruments and methods, earthwork drilling, mining fluids, etc., can solve problems such as unfavorable flowback, filtration loss reduction, and aggravated formation damage, so as to reduce formation damage and increase compression resistance The effect of intensity

Inactive Publication Date: 2017-05-17
北京昆仑隆源石油开采技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The proppants in the prior art are generally composed of aggregates, binders, water-soluble polymer materials, and curing agents. effect, a large amount of thickener is required, which is not conducive to flowback and fluid loss control, thus aggravating formation damage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] According to the method for preparing the above-mentioned self-suspending proppant of the present invention, it is characterized in that:

[0033] Heat the aggregate to 210-250°C and cool down to 10-40°C. In a preferred solution, the aggregate can be heated to 210°C and then cooled to 170°C. In another preferred solution, the aggregate can be heated to 250°C, then lower the temperature to 250°C; it is also possible to heat the aggregate to 230°C and then cool down to 220°C.

[0034] Then add the following ingredients according to the mass ratio in turn:

[0035] Add reinforced resin and stir evenly;

[0036] Add the reinforced resin curing agent and stir evenly;

[0037] Add secondary resin and stir evenly;

[0038] Add cross-linking agent and stir evenly;

[0039] Add the thickening polymer material and stir evenly, then add the polymer material curing agent and stir evenly;

[0040] Add dispersant and stir evenly;

[0041] Crushing and screening, self-suspending...

Embodiment

[0047] Heat the aggregate to 210-250°C, lower the temperature to 40°C, add the reinforcing resin layer, stir for 5-30s, then add the supporting curing agent and continue stirring for 5-20s, add resin for the second time and stir for 3-10s, add cross-linking agent and stir 1-5s, then add the polymer material with thickening effect for 5-10s, add the supporting curing agent, stir for 5-20s, add the dispersant, stir for 10s, crush and sieve, and then the self-suspending proppant can be obtained.

[0048] Preferably, the aggregates used include but are not limited to aeolian sand, river sand, sea sand, quartz sand, ceramsite, coated sand, coated proppant, glass microspheres, sintered bauxite, sintered alumina , sintered zirconia, synthetic resin.

[0049] The equipment used is a mixer with a control module, and the time of each mixing is manually input before the start.

[0050] According to the self-suspending proppant of the present application, the settling experiment is carri...

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Abstract

A self-suspension propping agent and a preparation method thereof are disclosed. The propping agent comprises the following ingredients: aggregate, reinforced resin, a reinforced resin curing agent, secondary resin, a cross-linking agent, a thickening polymer material, a secondary resin curing agent and a dispersant. The self-suspension propping agent and a gel breaking method thereof realize high reverse discharging rate and cause little damage to stratum. In addition, the preparation is simple and cost is saved.

Description

technical field [0001] The invention relates to the field of fracturing and exploitation in oil and gas fields, in particular to a superconducting proppant and a preparation method thereof. Background technique [0002] With the depletion of oil and gas resources in my country and the world, people have to develop low-permeability oil and gas reservoirs that are difficult to recover. Due to the low formation permeability of oil and gas reservoirs, fracturing means must be used to obtain economic oil (gas) flow, and fracturing fluid must be used to carry proppant into the formation to prevent the formation from reclosing. The proppants in the prior art are generally composed of aggregates, binders, water-soluble polymer materials, and curing agents. As a result, a large amount of thickener is required, which is not conducive to flowback and fluid loss control, thus aggravating formation damage. Contents of the invention [0003] The object of the present invention is to p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
CPCC09K8/80
Inventor 候孟婧马沁玥马永敏郝美艳
Owner 北京昆仑隆源石油开采技术有限公司
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