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Adaptive sand control and sand fixation material

A self-adaptive, sand control technology, applied in chemical instruments and methods, drilling composition, etc., to achieve the effect of less damage to the reservoir and preservation of the permeability of the reservoir

Active Publication Date: 2022-07-29
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an adaptive sand control and sand consolidation material to solve the technical problem of sand control and sand consolidation in sand production wells and ensure the normal production of oilfields

Method used

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  • Adaptive sand control and sand fixation material
  • Adaptive sand control and sand fixation material
  • Adaptive sand control and sand fixation material

Examples

Experimental program
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Effect test

Embodiment

[0020] Weigh in 60.0 g of distilled water, 15 g of phenolic resin pre-polycondensate, 20 g of vinyltrimethoxysilane, 5 g of white carbon black; 15 g of phenolic resin pre-condensation polymer, 20 g of vinyltrimethoxysilane, 5 g of Silica was added to 60.0 g of distilled water in turn, stirred and mixed at room temperature and adjusted to pH 7 with sodium hydroxide to prepare an adaptive sand control and sand-fixing material.

[0021] The prepared self-adaptive sand control and sand fixation material is heated to about 40°C, and then the sand control and sand fixation material is extruded into the sand producing well that needs to be consolidated by a plunger pump and other extrusion devices, and consolidated for about 40 hours, that is, Complete the consolidation work.

[0022] The content that is not described in this embodiment is the prior art, and thus will not be described repeatedly.

[0023] Performance evaluation of the self-adaptive sand control and sand fixation mat...

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Abstract

The invention provides a self-adaptive sand control and sand-fixing material, which comprises a curing agent, a coupling agent, a porosity agent and water; the mass percentage of the material is as follows: the curing agent is 5 to 30%, and the coupling agent is 20 to 30% , the porosity agent is 1 to 1.0%, and the balance is water; the material is sensitive to the silica structure, the main component of the formation quartz sand. When the material is in contact with the formation quartz sand, the two can react to form polymers, which can Targeted sand control and sand fixation can achieve the effect of sand control and sand fixation for sand producing wells and ensure the normal production of oilfields.

Description

technical field [0001] The invention belongs to the technical field of oil and natural gas exploitation, and in particular relates to an adaptive sand control and sand fixing material. Background technique [0002] In oil exploration, sand production in oil and water wells is extremely harmful. If the sand is buried in oil, gas and water layers, the production of oil and gas wells will be stopped, and the injection of water wells will be stopped. Downhole operations, equipment maintenance or replacement will be frequent, and production costs will increase. If a large amount of sand is produced, the formation will be seriously depleted, and cavities are easily formed outside the reservoir casing, causing formation collapse, casing rupture and deformation, and even the well being scrapped. Therefore, sand control for sand producing wells is the primary measure to ensure the normal production of oilfields. [0003] At present, oil fields in most areas have entered the developm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/575C09K8/57
CPCC09K8/5755C09K8/572C09K2208/18
Inventor 刘义刚刘长龙代磊阳邹剑高尚兰夕堂符扬洋张璐牟媚张丽平
Owner CHINA NAT OFFSHORE OIL CORP
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