Netted sand prevention material

A sand control and mesh technology, applied in drilling compositions, chemical instruments and methods, etc., can solve problems such as uneven spread, and achieve smooth pore throat channels, firm adsorption, and good water resistance.

Inactive Publication Date: 2008-09-24
DONGYING HUIYOU GASOLINEEUM NEW TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the above-mentioned defects in the prior art, to provide a mesh-shaped sand control material, which overcomes the problem that the liquid chemical sand control in the heterogeneous oil layer has uneven sweep and affects the sand control effect in the past, and ensures that the sand production well Sand control success rate and validity period

Method used

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  • Netted sand prevention material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: mainly be made up of auxiliary material and sand-fixing material, wherein, auxiliary material is solid-phase semi-rigid solid material, adopts the walnut shell of 1kg, and the shape particle diameter of material etc. is aimed at different oil layer characteristics (heterogeneity) and Determine the particle size of the auxiliary material for the degree of depletion of the sand control oil layer. At this time, choose the auxiliary material with a particle size of 0.1-3.5mm;

[0013] 20kg of silicone resin is used as the sand-fixing material, and the stock solution density is 1.05-1.30g / cm;

[0014] Additives H-1, Y-1, Y-2: Among them, additive H-1: industrial product, dosage: 1kg of polyvinyl butyral; additive Y-1, dosage: 1kg of γ-aminopropyl triethyl Oxysilane; additive Y-2, dosage: 0.1 kg of hydroxymethyl cellulose; diluent Y-3, dosage: 10 kg of toluene; anticoagulant Y-4, dosage: 0.1 kg of p-methoxyphenol.

Embodiment 2

[0015] Example 2: 20kg of walnut shells are used as the auxiliary material, 80kg of organic silicon resin is used as the sand-fixing material, and the density of the stock solution is 1.05-1.30g / cm;

[0016] Additives H-1, Y-1, Y-2: Among them, additive H-1: industrial product, dosage: 10kg of polyvinyl butyral; additive Y-1, dosage: 10kg of γ-aminopropyl triethyl Oxysilane; additive Y-2, dosage: 1kg of hydroxymethylcellulose; diluent Y-3, dosage: 60kg of toluene; anticoagulant Y-4, dosage: 3kg of p-methoxyphenol.

Embodiment 3

[0017] Example 3: 20kg of mica mineral material is used as the auxiliary material, 80kg of phenolic resin is used as the sand-fixing material, and the density of the stock solution is 1.05-1.30g / cm;

[0018] Additives H-1, Y-1, Y-2: Among them, additive H-1: industrial product, dosage: 10kg of polyvinyl acetal; additive Y-1, dosage: 10kg of γ-aminopropyltrimethoxy base silane; additive Y-2, dosage: 1kg of methyl ethyl ketone peroxide; diluent Y-3, dosage: 60kg of diesel; anticoagulant Y-4, dosage: 3kg of caustic soda.

[0019] Pumping of sand control and related materials after completion of on-site construction preparations:

[0020] (1) Squeeze a certain amount of benzene or weak base cleaning agent (10%) and clay antiswelling agent (2%) aqueous solution of quaternary ammonium salt or cationic polyacrylamide into the formation as required.

[0021] (2) Then squeeze in the above-mentioned configured sand control material 1 (auxiliary material) (designed according to 300-400L...

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Abstract

The invention relates to a liquid and solid two-phase netty sand control material used for oil fields. The technical proposal is that the liquid and solid two-phase netty sand control material consists of an auxiliary material and a sand fixation material; the auxiliary material is semi-rigid solid material with 1.0 to 20 portions by weight; the sand fixation material is used with 20 to 80 portions by weight. The liquid and solid two-phase netty sand control material has the advantages of low viscosity, injecting the components once, safety and stability, high fixation strength, little injury to the stratum, good resistivity to heat and water, convenient construction and so on. Compared with the prior liquid chemical sand control material, the sand control material further has the characteristics of capability of adjusting the injection profile of a sand control agent in a heterogeneous oil zone; keeping the liquid chemical sand control material uniformly entering each perforated hole of the sand control horizon; overwhelming the problem of nonuniform spreading of the prior liquid chemical sand control material in heterogeneous oil layers and affecting the sand controlling result, thus ensuring the sand control success rate and the effective period of sand production wells.

Description

1. Technical field: [0001] The invention relates to a sand control material for oil fields, in particular to a liquid-solid two-phase reticular sand control material. 2. Background technology: [0002] Preventing sand production in unconsolidated sandstone reservoirs is a key technical measure to maintain the normal production of oil wells. There are many types of sand control technology, and each sand control function has its own merits. The original chemical agents such as phenolic formaldehyde, urea formaldehyde, furan and emulsion have high viscosity, difficult pumping, poor water and heat resistance, short validity period, low strength, great damage to the formation, and are seriously affected by heterogeneous oil formations, etc. Disadvantages, it is difficult to meet the needs of on-site production. 3. Contents of the invention: [0003] The purpose of the present invention is to address the above-mentioned defects in the prior art, to provide a mesh-shaped sand co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/56C08L83/04C08L63/00C08L61/06C08L61/20C08L71/14C08K5/17C08K3/38
Inventor 张宁曾奇柽
Owner DONGYING HUIYOU GASOLINEEUM NEW TECH DEV
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