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Crush-resistant capacity test method for resin film-coating proppant

A technology of resin coating and capacity testing, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., can solve the problem of a small amount of fine powder loss, and the test results cannot truly and accurately reflect the support of resin coating agent crushing ability, error and other issues

Active Publication Date: 2013-06-26
BEIJING RECHSAND SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The first technical problem to be solved by the present invention is that when the industry standard method is used in the prior art to measure the anti-fragmentation ability of the resin-coated proppant, since the resin film coated on the surface of the proppant will coating, resulting in test results that cannot truly and accurately reflect the anti-fragmentation ability of resin-coated proppants; thus providing a test method that can accurately reflect the anti-fragmentation ability of resin-coated proppants
[0008] The second technical problem to be solved by the present invention is that when the industry standard method is used in the prior art to measure the crush resistance of the resin-coated proppant, in the process of transferring and screening the proppant particles, it is easy to A small amount of fine powder is lost, resulting in a large error in the calculation of the crushing rate, thereby providing a resin coating that can effectively avoid measurement errors caused by fine powder loss during the transfer and screening of proppant particles. Test method for fracture resistance of membrane proppants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In this example, a resin-coated proppant with a closing pressure of 69 MPa and a particle size specification of 30-50 mesh (that is, a particle size of 0.6-0.3 mm) is used to test the resistance to crushing. The crushing chamber adopts a specification of 5.08 cm in diameter. Steps as follows:

[0045] Step 1. According to the standard SY / T 5108-2006, the bulk density of the resin-coated proppant (closed pressure 69MPa, particle size specification 30-50 mesh) is determined to be 1.55g / m 3 , and calculate the mass m of the resin-coated proppant sample weighed according to formula (3) 1 =38.32g:

[0046] m 1 =C 2 ρ b d 2 …………………………………… (3)

[0047] where:

[0048] m 1 - mass of proppant sample, g;

[0049] ρ b ——Proppant bulk density, g / cm 3 ;

[0050] C 2 ——Calculation coefficient, C 2 =0.958cm;

[0051] d——diameter of crushing chamber, cm;

[0052] The resin-coated proppant that was weighed abo...

Embodiment 2

[0058] In this example, a resin-coated proppant with a closing pressure of 69 MPa and a particle size specification of 20-40 mesh (that is, a particle size of 0.85-0.425 mm) is used to test the anti-crushing ability. The crushing chamber adopts a size of 5.08 cm in diameter. Proceed as follows:

[0059] Step 1. According to the standard SY / T 5108-2006, the bulk density of the resin-coated proppant (closed pressure 69MPa, particle size specification 20-40 mesh) is determined to be 1.54g / m 3 , according to formula (3) to calculate the weight m of the resin-coated proppant sample 1 =38.07g;

[0060] The resin-coated proppant that was weighed above was placed in a crucible at 800°C in a muffle furnace. o C was roasted for 1 hour, all the surface resin was burned off, then the proppant was poured into a 40-mesh sieve and vibrated for 10 minutes. Finally, the mass of the sample on the 40-mesh sieve was weighed as the sample aggregate mass m 3 =36.54g;

[0061] Step 2: Weigh the ...

Embodiment 3

[0066] In this example, a resin-coated proppant with a closing pressure of 69 MPa and a particle size specification of 30-50 mesh (that is, a particle size of 0.6-0.3 mm) is used to test the anti-crushing ability. The crushing chamber adopts a size of 5.08 cm in diameter. Proceed as follows:

[0067] Step 1. According to the standard SY / T 5108-2006, measure the bulk density of the resin-coated proppant (closed pressure is 69MPa, particle size specification is 30-50 mesh) to be 1.55g / m 3 , calculate the mass m of the resin-coated proppant sample weighed according to formula (3) 1 =38.32g;

[0068] The resin-coated proppant that was weighed above was placed in a crucible at 800°C in a muffle furnace. o C is roasted for 1 hour to burn off all the surface resin, then pour the proppant into the 50-mesh sieve and vibrate for 10 minutes, and finally weigh the sample mass on the 50-mesh sieve, which is the sample aggregate mass m 3 =36.78g;

[0069] Step 2: Weigh the resin-coated ...

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Abstract

The invention provides a crush-resistant capacity test method for a resin film-coating proppant. The crush-resistant capacity test method comprises the steps of before or after a crush-resistant capacity test, roasting a resin film-coating proppant sample to completely burn out surface resin; and during weighing, weighing the mass of the sample having a higher mass value and left on a sieve screen instead of the mass of proppant particles falling onto a chassis below the sieve screen, thus effectively avoiding the measurement errors caused by the loss of fine powder in the process of transferring and screening the proppant particles, wherein the obtained data can be used for really and accurately reflecting the crush-resistant capacity of the resin film-coating proppant, thus being higher in reference value and capable of realizing selection of proper fracture film-coating proppants aiming at different application occasions better.

Description

technical field [0001] The invention relates to a performance detection method of a resin-coated proppant, and belongs to the technical field of petroleum fracturing proppant. Background technique [0002] Fracturing proppant is a key material in fracturing construction. It is used to support in the fractures of fracturing formations and effectively guide oil and gas into oil and gas wells, thereby greatly increasing oil and gas production and prolonging the life of oil wells. Usually, fracturing proppants are natural sand or artificial high-strength ceramic particles with a certain particle size and gradation. With the development of the petroleum industry, in order to further improve the performance of fracturing proppants, new low-friction proppants have been developed. Resin is coated on the surface of sand or ceramic particles to further improve the strength and flow conductivity of the fracturing proppant. [0003] For the evaluation of the performance of fracturing p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N5/00
Inventor 秦升益王光胡宝苓许智超钟毓娟
Owner BEIJING RECHSAND SCI & TECH GRP
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