Preparation process of loaded water-controlled sand with phase permeability regulating function

A technology of phase permeability and preparation process, applied in the field of load-type water-controlling sand preparation technology, can solve problems such as affecting development efficiency or economic benefits, affecting oil well productivity, energy waste, etc., so as to improve development efficiency or economic benefits and prolong stable production. period, the effect of reducing production costs

Active Publication Date: 2011-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of implementing conventional gravel packing sand control technology in oil fields, quartz sand or fracturing ceramsite is often used as the filling medium. After being filled into the oil layer, the formation compaction zone is established, and the three-stage sand control with the screen sleeve annulus and sand filter pipe However, it also has the following shortcomings or deficiencies: ① no water control function; ② the water cut rises sharply, which seriously affects the production capacity of the oil well; ③ Raising a large amount of formation water leads to a great waste of energy and environmental pollution; ④Short stable production period of oil wells leads to higher costs and affects development efficiency or economic benefits

Method used

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  • Preparation process of loaded water-controlled sand with phase permeability regulating function
  • Preparation process of loaded water-controlled sand with phase permeability regulating function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Step A) Cleaning the surface of quartz sand or ceramsite: Soak with 95% industrial ethanol and stir for 15 minutes, then place it at room temperature to dry.

[0015] Step B) is the surface modification method of quartz sand or ceramsite: put the required 1 quartz sand or ceramsite into the stirring tank, add an aqueous solution containing 1% volume of coupling agent KH-560, stir and slowly heat up to 80°C, so that The coupling agent undergoes a hydrolysis reaction on the surface of the quartz sand for 20 minutes.

[0016] Step C) is to mix the surface-modified quartz sand or ceramsite with a mixture of monomeric acrylic acid, propylene, sulfonated propylene and deionized water, and self-polymerize under the action of an initiator to form a load-type water-controlling material with a phase permeability adjustment function. Sand: a. Mix the quartz sand or ceramsite after the hydrolysis reaction in step B) with the mixture of monomer acrylic acid, propylene, sulfonated pr...

Embodiment 2

[0018] Step A) Cleaning the surface of quartz sand or ceramsite: Soak with 95% industrial ethanol and stir for 15 minutes, then place it at room temperature to dry.

[0019] Step B) is the surface modification method of quartz sand or ceramsite: put the required 1 quartz sand or ceramsite into the stirring tank, add an aqueous solution containing 2% by volume of coupling agent C-439, stir and slowly raise the temperature to 70°C to make the coupling The coupling agent undergoes hydrolysis reaction on the surface of quartz sand for 30 minutes.

[0020] Step C) is to mix the surface-modified quartz sand or ceramsite with a mixture of monomeric acrylic acid, propylene, sulfonated propylene and deionized water, and self-polymerize under the action of an initiator to form a load-type control compound with a phase permeability adjustment function. Water sand: a. Mix the quartz sand or ceramsite after the hydrolysis reaction in step B) with the mixture of monomer acrylic acid, propyl...

Embodiment 3

[0022] Step A) Cleaning the surface of quartz sand or ceramsite: Soak with 95% industrial ethanol and stir for 15 minutes, then place it at room temperature to dry.

[0023] Step B) is the surface modification method of quartz sand or ceramsite: put the required 1 quartz sand or ceramsite into the stirring tank, add an aqueous solution containing 3% volume of coupling agent A-143, stir and slowly heat up to 80°C, The coupling agent was hydrolyzed on the surface of the quartz sand for 40 minutes. The solid initiator is a mixture of sodium bisulfite and ammonium persulfate with a mass ratio of 1:2.

[0024] Step C) is to mix the surface-modified quartz sand or ceramsite with a mixture of monomeric acrylic acid, propylene, sulfonated propylene and deionized water, and self-polymerize under the action of an initiator to form a load-type control compound with a phase permeability adjustment function. Water sand: a. Mix the quartz sand or ceramsite after the hydrolysis reaction in ...

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Abstract

The invention discloses a preparation process of loaded water-controlled sand with phase permeability regulating function. The preparation process comprises the following steps of: A) cleaning the surface of quartz sand or ceramsite; B) modifying the surface of the quartz sand or the ceramsite; and C) mixing the surface-modified quartz sand or ceramsite and the mixture of monomer acrylic acid, propylene, sulfonated propylene and deionized water and generating the loaded water-controlled sand with phase permeability regulating function by autopolymerization under the action of an initiator. The process prevents sand; the loaded water-controlled sand with phase permeability regulating function controls water in a limited way, so that the advantages of gravel packing technology are brought into play, the conventional process technology is endowed with unique performance, sand is prevented, the comprehensive water content of an oil well is lowered greatly, the yield of crude oil is increased, the stable production period of the oil well is prolonged, development efficiency or economic benefit is improved, and the like; and the process is widely applied to a sand prevention and water control process used in oil exploitation.

Description

1. Technical field [0001] The invention relates to oil production well phase permeability adjustment and water control and sand control methods, in particular to a load-type water control sand preparation process with phase permeability adjustment function. 2. Background technology [0002] In the process of implementing conventional gravel packing sand control technology in oil fields, quartz sand or fracturing ceramsite is often used as the filling medium. After being filled into the oil layer, the formation compaction zone is established, and the three-stage sand control with the screen sleeve annulus and sand filter pipe However, it also has the following shortcomings or deficiencies: ① no water control function; ② the water cut rises sharply, which seriously affects the production capacity of the oil well; ③ Raising a large amount of formation water leads to a great waste of energy and environmental pollution; ④Short stable production period of oil wells leads to higher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/48C04B41/83C09K8/42C08F292/00
Inventor 宋金波梅明霞孙秀钊曲杰许霞杨军董海生郑铎韩宏
Owner CHINA PETROLEUM & CHEM CORP
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