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MCF fracturing temporary plugging agent as well as preparation method and application thereof

A temporary plugging agent and fracturing technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of limited fracture length, fast water solubility, easy to stick to the pump, etc., and achieve strong formation adaptability and particle size. Reasonable combination and small formation damage

Active Publication Date: 2022-04-19
延安祁北石油工程技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Fast water solubility, easy to stick to the pump; the water-soluble temporary plugging agent dissolves quickly after entering the fracturing fluid, the viscosity increases rapidly, and it is easy to adhere to the fracturing pump of the fracturing vehicle On the valve, the valve is not closed tightly, which affects the pump efficiency, reduces the displacement, and cannot guarantee the ideal fracturing displacement
[0005]Second, the temporary plugging agent is easy to harden and form lumps; The rapid pressure boost of the fracturing manifold will cause pollution and hidden dangers to the personal safety of construction workers and the environment
[0006]Third, the anti-cutting performance is poor; The position placed in the fracture is not ideal, and the fracturing effect is poor
[0007] 4. The artificial interlayer formed by the temporary plugging agent has insufficient compressive strength; The length of the crack formed after plugging is limited

Method used

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  • MCF fracturing temporary plugging agent as well as preparation method and application thereof
  • MCF fracturing temporary plugging agent as well as preparation method and application thereof
  • MCF fracturing temporary plugging agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The formula of the MCF fracturing temporary plugging agent in this embodiment is shown in Table 1:

[0044] Table 1. The formula of the MCF fracturing temporary plugging agent of embodiment 1

[0045]

Embodiment 2

[0047] The formula of the MCF fracturing temporary plugging agent in this embodiment is shown in Table 2:

[0048] Table 2. The formula of the MCF fracturing temporary plugging agent of embodiment 2

[0049]

Embodiment 3

[0051] The formula of the MCF fracturing temporary plugging agent in this embodiment is shown in Table 3:

[0052] Table 3. The formula of the MCF fracturing temporary plugging agent of embodiment 3

[0053]

[0054]Mixing and compounding the two kinds of particles, the main component and the additive, can not only improve the adhesion of the product, but also have good pressure resistance.

[0055] The main technical indicators of the obtained MCF fracturing temporary plugging agent are as follows:

[0056] ①Particle size: 0.2-6mm, adjustable;

[0057] ② Density 1.1-1.5g / cm 3 ;

[0058] ③ The degradation rate is above 98%, and it becomes nonlinear degradation;

[0059] ④The compressive strength is greater than 56Mpa (construction pressure measured and calculated);

[0060] ⑤ The crude oil dissolution rate is 100%.

[0061] The MCF fracturing temporary plugging agent in Example 1 is mixed according to the proportion of particles with a particle size of 5.0-6.0mm, the ...

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Abstract

The invention provides an MCF fracturing temporary plugging agent and a preparation method and application thereof.The MCF fracturing temporary plugging agent comprises main components and additives, the main components comprise petroleum resin, ozocerite and calcium stearate, the additives comprise thermosetting resin, water-soluble resin and positive electricity gel, and the weight ratio of the additives to the main components is 1: (10-50). The MCF fracturing temporary plugging agent provided by the invention belongs to an oil-soluble resin temporary plugging agent, has the technical advantages of high compression strength, full degradation, adjustable particle size, safety, environmental protection, no danger, small dosage, low cost and the like, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and relates to an MCF fracturing temporary plugging agent and its preparation method and application. Background technique [0002] my country's low-permeability oilfields are rich in petroleum geological reserves, and their resources account for about 30% of the country's total petroleum resources. Among the proven reserves, low-permeability oil reservoirs account for more than two-thirds of the country's reserves, and the development potential is huge. With the improvement of exploration technology, deep, ultra-deep and unconventional oil and gas resources have increasingly become new fields of exploration, and the physical properties of reservoirs are getting worse and worse. Most low-permeability reservoirs must undergo fracturing to obtain Although industrial oil streams have increased production by a large margin after fracturing, the output is still not high. The main reaso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/508C09K8/68C09K8/88
CPCC09K8/508C09K8/68C09K8/88C09K2208/18
Inventor 王剑荣
Owner 延安祁北石油工程技术服务有限公司
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