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Sand prevention and water reduction proppant particles and preparing method thereof

A technology of proppant and precipitation agent, which is applied in chemical instruments and methods, earthwork drilling, and fluid production, etc., to achieve ideal effects, reduce water content, and be easy to master.

Inactive Publication Date: 2016-04-20
DRILLING TECH DEV CO LTD OF TIANJIN DAGANG OILFIELD PETROLEUM ENG INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims to propose a sand control and precipitation proppant particle and its preparation method to solve the problem of sand control in wells with high water content and sand production in the middle and later stages of oilfield development

Method used

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  • Sand prevention and water reduction proppant particles and preparing method thereof
  • Sand prevention and water reduction proppant particles and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for preparing sand-preventing and precipitation-preventing proppant particles with a particle size of 0.5-0.8 mm, comprising the following steps:

[0035] Step 1: Put 200g of Portland cement clinker into the mixer for stirring, then add 40g of polyacrylamide and continue stirring, stir well and set aside.

[0036] Step 2: Add 100g of unsaturated polyester resin into a stirrer and stir, then add 2g of KH560 organosilane coupling agent and 20g of methanol, and stir to form a uniform resin solution for use.

[0037] Step 3: Put 600g of quartz sand core particles with a particle size of 0.4-0.6mm into the sand mixer for stirring. After stirring evenly, weigh 110g of the resin solution prepared in step 2 and add it to the sand mixer, and continue stirring to make the resin The solution is fully coated with the surface of the quartz sand core particles, and then 240g of Portland cement clinker containing polyacrylamide prepared in step 1 is added to continue stirring...

Embodiment 2

[0039] A method for preparing sand-preventing and precipitation-preventing proppant particles with a particle size of 0.7-1.4 mm, comprising the following steps:

[0040] Step 1: Put 900g of Portland cement clinker into the mixer for stirring, then add 270g of polyacrylamide and continue stirring, stir well and set aside.

[0041] Step 2: Prepare resin solution

[0042] Add 300g of unsaturated polyester resin into a stirrer and stir, then add 9g of organosilane coupling agent of model DL602 and 90g of diluent methanol, and stir to form a uniform resin solution for later use.

[0043] Step 3: Put 1800g of quartz sand core particles with a particle size of 0.6-1.2mm into the sand mixer for stirring. After stirring evenly, weigh 1170g of the resin solution prepared in step 2 and add it to the sand mixer to continue stirring to make the resin solution Fully coat the surface of the quartz sand core particles, then add 390g of Portland cement clinker containing polyacrylamide prepa...

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Abstract

The invention provides sand prevention and water reduction proppant particles and a preparing method thereof. The sand prevention and water reduction proppant particles comprise quartz sand core particles and resin coating films which cover the surfaces of the quartz sand core particles and are rich in portland cement clinker. The resin coating films rich in portland cement clinker are formed by mixing a mixture A with a resin solution. The mixture A contains portland cement clinker, and the mass ratio of quartz sand core particles to portland cement clinker to resin is (18-22) : (9-11) : (2-4). The sand prevention and water reduction proppant particles are a particle composite material which has high hydrophilia and can be consolidated, oil-water flow selective permeation is high, a water flow preferential migration passage is blocked by sand prevention and water reduction proppant particles in a proper particle size according to the size of a duct and the water outlet condition of an oil and gas well, water direction is changed, and then the water content of the oil and gas well is reduced.

Description

technical field [0001] The invention belongs to the technical field of oil recovery, and in particular relates to sand-preventing and precipitation-preventing proppant particles and a preparation method thereof. Background technique [0002] Most of the coastal oilfields are unconsolidated sandstone reservoirs with shallow burial, high shale content, loose cementation, poor diagenesis, and severe sand production, which greatly affect the normal development and production of the oilfield. Especially when the water cut rises in the middle and late stages of oilfield development, the clay-based oil layer cement will swell and become loose when exposed to water, the cement strength will decrease, and then the particle displacement will occur, which greatly intensifies the degree of sand production in the formation. At the same time, the production method of large pump liquid extraction or excessive working system, resulting in excessive production pressure difference will also c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
CPCC09K8/805
Inventor 李怀文刘伟王超邵力飞曹庆平
Owner DRILLING TECH DEV CO LTD OF TIANJIN DAGANG OILFIELD PETROLEUM ENG INST
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