Micro-nano rigid resin anti-collapse blocking agent

A plugging agent, micro-nano technology, applied in the field of micro-nano rigid resin anti-slump plugging agent, can solve problems such as limited effect, achieve excellent leakage prevention, improve well wall, and prevent damage

Inactive Publication Date: 2021-02-19
台前县天宏化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this stabilizer can only be used in water-based drilling fluid, and it needs to be used at a temperature of 150°C for the best effect. If it is used at a lower bottomhole temperature, the effect will be limited

Method used

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  • Micro-nano rigid resin anti-collapse blocking agent
  • Micro-nano rigid resin anti-collapse blocking agent
  • Micro-nano rigid resin anti-collapse blocking agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Components and mass ratio of a micro-nano rigid resin anti-slump plugging agent: 50% rigid resin particles, 25% brucite fibers, 15% calcite powder, 10% stearic acid amide; the rigid resin particles are thermoplastic acrylic , the particle ratio (mass ratio) is as follows: rigid resin particles (2500 mesh): rigid resin particles (1500 mesh): rigid resin particles (800 mesh) = 5:3:2. The anti-slump plugging agent product can be obtained after all components are mixed uniformly.

Embodiment 2

[0023] Components and mass ratio of a micro-nano rigid resin anti-slump plugging agent: 60% rigid resin particles, 20% brucite fibers, 10% calcite powder, 10% stearic acid amide; the rigid resin particles are thermoplastic acrylic , the gradation ratio is as follows: rigid resin particles (2500 mesh): rigid resin particles (1500 mesh): rigid resin particles (800 mesh) = 5:3:2. The anti-slump plugging agent product can be obtained after all components are mixed uniformly.

Embodiment 3

[0025] Components and mass ratio of a micro-nano rigid resin anti-slump plugging agent: 55% rigid resin particles, 25% brucite fibers, 10% calcite powder, 10% stearic acid amide; the rigid resin particles are thermoplastic acrylic , the gradation ratio is as follows: rigid resin particles (2500 mesh): rigid resin particles (1500 mesh): rigid resin particles (800 mesh) = 5:3:2; mineral fiber is brucite fiber; surface treatment agent is stearin acid amide. The anti-slump plugging agent product can be obtained after the components are mixed evenly;

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Abstract

The invention discloses a micro-nano rigid resin anti-collapse blocking agent, which comprises the following components in percentage by mass: 50-65% of rigid resin particles, 20-25% of mineral fibers, 10-15% of inorganic powder and 5-10% of a surface treating agent, wherein the rigid resin particles are thermoplastic acrylic and are formed by compounding 3000-mesh rigid resin particles, 2000-meshrigid resin particles and 1000-mesh rigid resin particles according to the mass ratio of (4-5): (2-3): (1-2); the mineral fibers are brucite fibers or basalt fibers or a mixture of the brucite fibersand the basalt fibers; the length-diameter ratio of the mineral fiber is 10-20, and the diameter of the mineral fiber is 0.5-9 microns; and the inorganic powder is calcite with the particle size of 1500 meshes. The anti-collapse blocking agent is suitable for being applied to high-density drilling fluid, can prevent solid phases or liquid phases in the drilling fluid from damaging oil and gas reservoirs, and achieves oil and gas reservoir protection.

Description

technical field [0001] The invention relates to the technical field of drilling fluid treatment agents in petroleum drilling engineering, in particular to a micro-nano rigid resin anti-collapse plugging agent. Background technique [0002] As the country's demand for oil and gas resources continues to expand, and the number of deep wells, ultra-deep wells and shale gas wells under complex formation conditions continues to increase, the performance of drilling fluids must be able to meet more stringent requirements. Among them, the wellbore stability problem has always been a worldwide problem in the drilling process. Downhole complexities and accidents caused by wellbore instability, such as well collapse, reduced diameter sticking, and bit balling, have caused a large amount of economic losses to the petroleum industry every year. . [0003] Studies have shown that when the drill bit drills into the formation to form a wellbore, the original formation stress is destroyed, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/03C09K8/50C09K8/504C09K8/508
CPCC09K8/03C09K8/50C09K8/5045C09K8/508
Inventor 黄旭东梁延军申威谢奇
Owner 台前县天宏化工有限公司
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