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Low-density oil fracturing propping agent and preparation method thereof

A fracturing proppant and low-density technology, applied in the field of material science, can solve the problems that cannot meet the needs of shale oil and gas exploitation, and achieve the effects of suitable industrial production, low production cost, and improved quality and efficiency

Inactive Publication Date: 2012-11-21
贵州林海陶粒制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bulk density of the inventive product is 1.56-1.59g / cm 3 , apparent density 2.78-2.84g / cm 3 , when the closure pressure is 52Mpa, the fracture rate is 4.8-5.5%, which cannot meet the needs of shale oil and gas exploitation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 of the present invention: low-density petroleum fracturing proppant, calculated in parts by weight, including 50 parts of bauxite, 20 parts of clay, 10 parts of manganese oxide, 10 parts of magnesium oxide, 5 parts of limestone powder, and 5 parts of feldspar powder parts; Al in bauxite 2 o 3 The mass percentage is 70%.

[0015] The preparation method of low-density petroleum fracturing proppant, respectively pre-crushing bauxite, clay and auxiliary additives, pre-crushing to more than 325 mesh; mixing the pre-crushed materials in proportion, and pulverizing the mixed materials in a ball mill , the powder is passed through a 400-mesh standard sieve, and the sieve residue is not more than 20%; then, through the process of humidifying and wetting the powder, the powder that can be balled is prepared; the powder is added to the ball machine, and sprayed with atomized water And alternately add the powder obtained by the milling process to roll into balls to o...

Embodiment 2

[0020] Embodiment 2: Low-density petroleum fracturing proppant, calculated by weight parts, wherein 60 parts of bauxite, 20 parts of clay, 10 parts of manganese oxide, 3 parts of limestone powder, and 7 parts of feldspar powder. Al in bauxite 2 o 3 The mass percentage is 65%.

[0021]The preparation method of low-density petroleum fracturing proppant, respectively pre-crushing bauxite, clay and auxiliary additives, pre-crushing to more than 325 mesh; mixing the pre-crushed materials in proportion, and pulverizing the mixed materials in a ball mill and grading, the powder is passed through a 400-mesh standard sieve, and the sieve residue is not more than 20%, and the powder for ball formation is prepared; 25% of the prepared powder is added to the ball forming machine to obtain a cue ball, and the cue ball is made Take it out from the ball forming machine; when forming balls, add cue balls into the ball forming machine, add the remaining powder according to the needs of embry...

Embodiment 3

[0026] Embodiment 3: Low-density petroleum fracturing proppant, calculated by weight parts, wherein 65 parts of bauxite, 15 parts of clay, 10 parts of magnesium oxide, 5 parts of talcum powder, and 2 parts of limestone powder. Al in bauxite 2 o 3 The mass percentage is 60%.

[0027] The preparation method of low-density petroleum fracturing proppant, respectively pre-crushing bauxite, clay and auxiliary additives, pre-crushing to more than 325 mesh; mixing the pre-crushed materials in proportion, and the mixed materials pass the 400 mesh standard Sieve, and the sieved residue is not more than 20%, and the powder material that can be formed into balls is prepared; the powder material is added into the ball machine, and the powder obtained by spraying atomized water and alternately added into the powder making process is rolled into balls to obtain The green balls with a roundness and sphericity of more than 0.80 are dried by a rotary dryer and sieved by a cylindrical sieve to...

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Abstract

The invention discloses a low-density oil fracturing propping agent. The low-density oil fracturing propping agent comprises the following components in parts by weight: 40 to 90 parts of bauxite, 5 to 30 parts of clay and 1 to 30 parts of auxiliary additive, wherein the mass percentage of Al2O3 in the bauxite is 30 to 75 percent. The oil fracturing propping agent is prepared by blending the bauxite, the clay and the auxiliary additive in special proportion, and performing a pulverizing process, a pelletizing process and a sintering process on the mixture. Detection on the propping agent shows that the propping agent has the characteristics of wide raw material resource, low production cost and the like; the yield and mass of powder are improved, and the production cost is reduced; and the problems of large fracturing and propping volume density and visual density, large abrasion of fracturing to equipment, high construction cost and the like in exploitation of shale oil and shale gas, and shallow shaft fracturing construction of an oil well and a natural gas well in the prior art are solved. A preparation method of the low-density oil fracturing propping agent is simple in process, easy to operate and very suitable for industrial production.

Description

technical field [0001] The invention relates to the field of material science, a petroleum fracturing proppant used in shallow well fracturing of petroleum and natural gas wells, and a new type of hydraulic fracturing technology for shale oil and shale gas exploitation, in particular to a low-density petroleum fracturing support agent and its preparation method. Background technique [0002] Petroleum fracturing proppant is a support that keeps rock fractures deep in the formation open. Its function is to support the two walls of the fracture so that after pumping is stopped, when the bottom hole pressure drops below the closing pressure, it will lead to the oil and gas well. The slit in the eye remains open. Injecting fracturing proppants into oil and gas wells can not only improve the permeability of oil and gas layers, increase oil and gas production, but also prolong the service life of oil and gas wells. [0003] The petroleum fracturing proppants produced by my count...

Claims

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Application Information

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IPC IPC(8): C09K8/80
Inventor 陈烨李忠
Owner 贵州林海陶粒制造有限公司
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