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A method for testing the anti-fragmentation ability of resin-coated proppant

A technology of resin coating and capacity testing, applied in the direction of applying stable tension/pressure to test material strength, measuring devices, instruments, etc., can solve errors, loss of a small amount of fine powder, and test results that cannot truly and accurately reflect resin coating Membrane proppant anti-fragmentation ability and other issues

Active Publication Date: 2015-09-16
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 69MPa and a particle size of 30-50 mesh (that is, a particle size of 0.6-0.3mm) was selected for the anti-fragmentation test. The crushing chamber adopts a specification with a diameter of 5.08cm. as follows:

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

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

[0047] In the formula:

[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 weighed above is placed in a ...

Embodiment 2

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

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

[0060] Place the resin-coated proppant weighed above in a crucible, and place it in a muffle furnace at 800 o C roasting for 1 hour, burn all the resin on the surface, then pour the proppant into a 40-mesh sieve and vibrate for 10 minutes, and finally weigh the sample mass on the 40-mesh sieve, which is the sample aggregate mass m 3 =36.54g;

[0061] Step 2. Weigh the resin-co...

Embodiment 3

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

[0067] Step 1. According to the standard SY / T 5108-2006, measure the bulk density of the resin-coated proppant (closing 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 the formula (3) 1 =38.32g;

[0068] Place the resin-coated proppant weighed above in a crucible, and place it in a muffle furnace at 800 o C roasting for 1 hour, burn all the resin on the surface, then pour the proppant into a 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 resi...

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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 Patents(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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