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Method for preparing light fracturing propping agent for multi-hole oil and gas well

A technology for fracturing proppants and oil and gas wells, which is applied in the fields of earthwork drilling, ceramic products, wellbore/well parts, etc., which can solve the problems of increasing the complexity of the preparation process, and achieve the convenience of large-scale industrial production, portability, and ease of use. The effect obtained

Inactive Publication Date: 2010-04-21
SINOSTEEL LUOYANG INST OF REFRACTORIES RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese Invention Patent CN200410001002.9 Wraps a layer of thermosetting resin on the surface of quartz sand to obtain low-density ceramsite with better crush resistance than quartz sand. However, this process requires the addition of a series of plasticizers, lubricants, and coupling agents. And polymer compounds such as thermosetting resins, and need to strictly control the temperature, which increases the complexity of the preparation process

Method used

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  • Method for preparing light fracturing propping agent for multi-hole oil and gas well
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Examples

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Embodiment 1

[0015] Example 1: 10 Kg of uncalcined bauxite, 1.2 Kg of uncalcined limestone, 0.2 Kg of bentonite, and 0.1 Kg of starch were weighed with an alumina content of 70 wt%. The raw material mixture is poured into a ball mill for grinding, and the passing rate of the ground fine powder through a 300-mesh sieve is 95%. Then put the ground fine powder into the disc ball forming machine, add appropriate amount of water in batches, turn it into balls, and obtain the proppant ceramsite green body. Place the proppant ceramsite green body in well-ventilated air to dry naturally. Then put it into a rotary kiln and heat it up to 1350°C at a rate of 30°C / min for 20 minutes for sintering. After cooling down, the proppant sintered body is obtained, and then it is classified and screened through a 20-mesh and 40-mesh screen to remove oversized and undersized particles. particles, resulting in a lightweight and porous proppant. The performance of the proppant is as follows, the bulk density is...

Embodiment 2

[0016] Example 2: Take 10Kg of uncalcined bauxite, 1.5Kg of uncalcined dolomite, 0.3Kg of kaolin, and 0.08Kg of dextrin with an alumina content of 62 wt%. The raw material mixture is poured into a vibration mill for grinding, and the passing rate of the ground fine powder through a 300-mesh sieve is 90%. Then put the ground fine powder into a high-speed ball forming machine, add an appropriate amount of water in batches, turn it into balls, and obtain the proppant ceramsite green body. Put the proppant ceramsite green body into a drying oven at 150°C for drying and dehydration. Then put it into a tunnel kiln and heat it up to 1300°C at a rate of 20°C / min for 1 hour for sintering. After cooling down, the proppant sintered body is obtained, and then it is classified and screened through 20 mesh and 40 mesh screens to remove oversized and undersized particles. particles, resulting in a lightweight and porous proppant. The performance of the proppant is: the bulk density is 1.27...

Embodiment 3

[0017] Example 3: Take 10Kg of uncalcined bauxite, 1.2Kg of uncalcined magnesite, 0.5Kg of bentonite, 0.3Kg of kaolin and 0.1Kg of starch with an alumina content of 50 wt%. The above-mentioned raw material mixture was poured into a ball mill for grinding, and the passing rate of the ground fine powder through a 300-mesh sieve was 88%. Then put the ground fine powder into the disc ball forming machine, add appropriate amount of water in batches, turn it into balls, and obtain the proppant ceramsite green body. Put the proppant ceramsite green body into a drying oven at 200°C for drying and dehydration. Then put it into a rotary kiln and heat it up to 1350°C at a rate of 40°C / min for 20 minutes for sintering. After cooling down, the proppant sintered body is obtained, and then it is classified and screened through a 20-mesh and 40-mesh screen to remove oversized and undersized particles. particles, resulting in a lightweight and porous proppant. The performance of the proppant...

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Abstract

The invention belongs to the technical field of oil fracturing propping agents and relates to a method for preparing a light fracturing propping agent for a multi-hole oil and gas well. The fracturing propping agent is prepared by taking alumina as a main material, adding one or a plurality of components of limestone, dolomite, magnesite, wood dust and plant chip as pore-forming substance, one or a plurality of components of bentonite and kaolinite as plasticizer, and one or a plurality of components of starch and dextrin as binder; grinding the materials into fine powder, mixing and stirring evenly, rolling to form balls in a granulator, then sintering in a tunnel kiln or a rotary kiln after drying, and finally screening to control the particle size distribution to obtain the light fracturing propping agent for multi-hole oil and gas well. The invention has simple material formula and preparing process and no pollution and is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of petroleum fracturing proppant, and relates to a preparation method of a light porous oil and gas well fracturing proppant. The proppant is especially suitable for fracturing production of shallow wells with high conductivity. Background technique [0002] With the widespread use of hydraulic fracturing technology in the oil and gas industry, fracturing proppant has become an indispensable material for oil and gas well stimulation. In the process of hydraulic fracturing, the underground rock formation is cracked by high-speed and high-pressure liquid. Before the rock formation cracks are closed, the fracturing fluid carrying proppant particles enters the rock formation cracks, and then supports the cracks. Oil and gas pass through these supports with the help of formation pressure. The gap between the agents is discharged, so as to realize the fracturing of oil and gas. [0003] At present, oil and gas we...

Claims

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Application Information

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IPC IPC(8): C04B35/622C04B35/10C04B38/00C09K8/80
CPCE21B43/267
Inventor 丁书强
Owner SINOSTEEL LUOYANG INST OF REFRACTORIES RES
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