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Low-density laminating propping agent and preparation method thereof

A proppant, low-density technology, used in chemical instruments and methods, earthwork drilling, and fluid production, can solve the problems of low proppant placement concentration, general application effect, and low input-output ratio, and achieve a spherical good chemical inertness, improve concentration and conductivity, and improve the effect of working sand ratio

Inactive Publication Date: 2016-12-21
河北易压得石油科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Quartz sand is cheap and is currently the most widely used proppant. It has a certain success rate in most reservoirs, but it has a high density, fast settlement speed, and low strength and cannot be used in low permeability or deep well fracturing.
When coalbed methane or shale gas is fractured, the concentration of proppant laying is low, and a large part of the proppant settles near the fracture opening, which makes construction difficult and easy sand plugging has great limitations, because of the low permeability of coalbed methane and shale gas formations Therefore, a low-density, medium-to-high-strength fracturing support material is required as a proppant
[0003] At present, there is a low-density film-coated proppant in the foreign market, but it is expensive and has low sphericity, general application effect, and low input-output ratio.

Method used

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  • Low-density laminating propping agent and preparation method thereof
  • Low-density laminating propping agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Accurately weigh raw materials: 12-20 mesh low-density proppant 200kg, thermoplastic phenolic resin 6kg, organic amine curing agent 1kg, water 3kg, dispersant 0.2kg, plasticized drag reducer 0.2kg.

[0020] Such as figure 1 As shown, the preparation method of the low-density film-coated proppant comprises the following steps:

[0021] (a) Crush the wild jujube core into 12-20 mesh spherical particles; and put it into a dryer to dry;

[0022] (b) After drying, start the laminating equipment, lift the material, put the wild jujube core in the heating box of the heating furnace to preheat, and put it into the sand mixer after preheating to rotate and heat to 140°C;

[0023] (c) Put the coated resin into the sand mixer for 90-120s, dissolve the curing agent, dispersant, and drag reducing agent in a solvent, and then add them in sequence, and stir evenly after fully curing;

[0024] (d) Put the processed product into a rotary vibrating sieve to vibrate and sieve, and pack ...

Embodiment 2

[0026] Accurately weigh raw materials: 200kg of 20-40 mesh low-density proppant, 6kg of thermoplastic phenolic resin, 1kg of organic amine curing agent, 3kg of water, 0.2kg of dispersant and 0.2kg of plasticized drag reducer.

[0027] Such as figure 1 As shown, the preparation method of the low-density film-coated proppant comprises the following steps:

[0028] (a) Crushing the wild jujube core into 20-40 mesh spherical particles;

[0029] (b) Put the wild jujube core into the pan for preheating, and put it into the sand mixer after preheating to rotate and heat to 140°C;

[0030] (c) Put the coated resin into the sand mixer for 90-120s, dissolve the curing agent, dispersant, and drag reducing agent in a solvent, and then add them in sequence, and stir evenly after fully curing;

[0031] (d) Put the processed product into a rotary vibrating sieve to vibrate and sieve, and pack it after cooling and drying in a condensing bed.

[0032] As shown in Table 1, the performance co...

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Abstract

The invention discloses a low-density film-covered proppant, which consists of the following components in parts by weight: Jujube seed 280-320, resin 5.6-8.4, curing agent 1-1.4, water 5-10, dispersant 0.2-0. 0.5 and plasticized drag reducer 0.2‑0.5. The resin is a thermoplastic phenolic resin; the curing agent is an organic amine curing agent, and the low-density film-covered proppant is formed by stirring the components evenly, fully curing, uniformly dispersing, and sieving. The low-density film-coated proppant is applied to oil, coal bed gas and shale gas fracturing. The invention has the characteristics of simple process, good sphericity, low product density, good suspension performance, low breakage rate, high compressive strength, good permeability and no pollution in the manufacturing process. Widely used in oil and gas field fracturing, greatly reducing the amount of fracturing fluid, increasing the ratio of fracturing sand to liquid, increasing the concentration and breadth of proppant in fractures, improving the conductivity of fractures, and helping to increase the production of oil and gas wells. It is especially suitable for fracturing of low-permeability coalbed methane and shale gas wells.

Description

technical field [0001] The invention relates to a low-density membrane-coated proppant and a preparation method thereof, belonging to the field of fracturing development of petroleum, coal bed gas and shale gas. Background technique [0002] In the fracturing development of oil and gas wells in oil fields, quartz sand and ceramsite are often used as fracturing proppants. Quartz sand is cheap and is currently the most widely used proppant. It has a certain success rate in most reservoirs, but it has a high density, fast settlement speed, and low strength and cannot be used in low-permeability or deep well fracturing. When coalbed methane or shale gas is fractured, the concentration of proppant laying is low, and a large part of the proppant settles near the fracture opening, which makes construction difficult and easy sand plugging has great limitations, because of the low permeability of coalbed methane and shale gas formations Therefore, a low-density, medium-to-high-stren...

Claims

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Application Information

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IPC IPC(8): C09K8/80
CPCC09K8/805
Inventor 卢修峰杨波
Owner 河北易压得石油科技有限公司
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