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Efficient conveying and filling proppant based on bionics and preparation method of efficient conveying and filling proppant

A proppant and bionics technology, applied in the field of fracturing, can solve the problems of complex pulse sanding process, increased cost of fracturing fluid, increased construction cost, etc., achieve good transportation effect, shorten fracturing construction period, reduce pressure Effect of Crack Construction Costs

Pending Publication Date: 2022-07-22
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high-viscosity fracturing fluid in this technology needs to add a large amount of polymer to increase the viscosity of the fracturing fluid, resulting in an increase in the cost of the fracturing fluid. At the same time, the polymer will cause damage to the reservoir; the pulse sanding process is complicated and requires The corresponding equipment is used to realize the pulse process, resulting in an increase in construction costs

Method used

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  • Efficient conveying and filling proppant based on bionics and preparation method of efficient conveying and filling proppant
  • Efficient conveying and filling proppant based on bionics and preparation method of efficient conveying and filling proppant
  • Efficient conveying and filling proppant based on bionics and preparation method of efficient conveying and filling proppant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A bionic-based high-efficiency transporting and filling proppant includes enhanced fracturing fluid and bionic dandelion proppant; wherein the mass ratio of enhanced fracturing fluid and bionic dandelion is: 1-2:100-400;

[0063] The enhanced fracturing fluid is a seawater-based fracturing fluid, and 100 parts of seawater-based fracturing fluid include, in parts by weight: 0.1 part of polyacrylamide polymer, 0.01 part of alkyl glycoside nonionic surfactant, 0.2 part of ammonium chloride, 0.01 part of dodecyl dimethyl benzyl ammonium chloride, 0.05 part of nano-silica, and the balance is artificial seawater; the nano-particle enhancer is modified nanoparticles, and the modification method is as follows:

[0064] The cocamidopropyl hydroxysulfobetaine solution was sprayed on the surface of the nanoparticles, and then the nanoparticles were placed in a 50°C environment for 20 minutes at a constant temperature; the nanoparticles were dried at 105°C to obtain a nanoparticle e...

Embodiment 2

[0093] The steps are the same as those in Example 1, except that the seawater-based fracturing fluid is different in that 100 parts of seawater-based fracturing fluid include, in parts by weight: 0.1 part of polyacrylamide polymer, 0.01 part of alkyl glycoside nonionic surfactant, 0.2 part of nonionic surfactant ammonium chloride, 0.01 part of dodecyl dimethyl benzyl ammonium chloride, and the rest are all artificial seawater.

[0094] Weigh the same amount of conventional ceramsite proppant and polyvinyl alcohol fiber as in Example 1, and the fiber length is 9 mm; the portability evaluation is as in Example 1, and the results are as follows image 3 shown.

Embodiment 3

[0096] The steps are the same as in Example 1, except that the polyacrylamide polymer in the seawater-based fracturing fluid is adjusted to 1 part, the viscosity of the fracturing fluid is changed, and the rest remain unchanged. The dynamic experiment of bionic dandelion proppant carried by enhanced seawater-based fracturing fluid is carried out, and the results are as follows: Figure 4 shown.

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Abstract

The invention discloses a bionics-based efficient conveying and filling proppant and a preparation method thereof. The bionics-based efficient conveying and filling proppant comprises enhanced fracturing fluid and a bionic dandelion proppant, wherein the mass ratio of the enhanced fracturing fluid to the bionic dandelion is (1-2): (100-400); according to 100 parts of the enhanced fracturing fluid, the enhanced fracturing fluid comprises the following components in parts by weight: 0.1-1 part of a drag reducer, 0.01-0.1 part of a cleanup additive, 0.2-0.8 part of a clay stabilizer, 0.01-0.05 part of a bactericide, 0.01-0.2 part of a nanoparticle enhancer and the balance of water, the bionic dandelion proppant comprises a modified proppant and modified fibers, wherein the mass ratio of the modified proppant to the modified fibers is (99-99.9): (0.1-1); according to the method, the fracturing fluid can be prepared by effectively utilizing the water source most suitable for the area, meanwhile, the prepared fracturing fluid can achieve efficient carrying and laying of the propping agent, the fracturing construction cost can be effectively reduced, the fracturing construction period can be effectively shortened, offshore fracturing continuous operation can be achieved, and the fracturing scale can be increased.

Description

technical field [0001] The invention relates to the technical field of fracturing in the oil and gas stimulation and transformation technology, in particular to a bionics-based high-efficiency transport and filling proppant and a preparation method. Background technique [0002] With the continuous development of oil and gas resources, the exploitation of unconventional oil and gas resources and the improvement of the extraction rate of traditional oil and gas resources have become the main development directions of oil and gas development. However, the development of unconventional oil and gas resources and the improvement of the recovery rate of old oilfields mostly require fracturing. The use of fracturing to carry proppant into the fracturing fracture is a key process in fracturing, so the filling effect of the proppant on the fracturing fracture will directly affect the fracturing effect. [0003] At present, many oilfields in my country have problems with proppant pac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
CPCC09K8/80C09K2208/10C09K2208/08C09K2208/12C09K2208/28C09K8/605C09K8/68C09K8/608
Inventor 刘平礼李骏杨建吴建发高尚郭兴午邹剑兰夕堂张丽平罗志锋任岚刘长龙杜娟陈祥李年银王鹏
Owner SOUTHWEST PETROLEUM UNIV
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