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Water environment delayed consolidation leakage stopping paste used for drilling wells

A technology of water environment and paste, applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of leakage of water layer and difficulty in judging the leakage layer, etc., achieve delayed consolidation, good plugging effect, Guarantee the effect of construction operation time

Active Publication Date: 2017-02-01
CHENGDU DEDAO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to propose an organic paste that cannot flow freely, but can be plastically deformed under pressure, can also be consolidated in a water environment, and has an adjustable consolidation time for different temperatures, so as to solve the problem of leaking layers at different temperatures. , The shape and size of the channel is difficult to judge the leaking layer, the water layer, especially the leaking layer of flowing water, etc. It is difficult to successfully plug the leak; improve the plugging success rate (reduce leakage, save time)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A drilling water environment consolidation plugging paste consists of the following components by weight percentage:

[0061] Component A:

[0062] 1. Phenol furfural resin 20%;

[0063] 2. Polyurethane modified epoxy resin 20%;

[0064] 3. Novolac vinyl ester resin 20%;

[0065] 4. Oxidized polyethylene wax 5%;

[0066] 5. Acetone 35%;

[0067] Component B:

[0068] 1. Hydroxydiethyltriamine 5%;

[0069] 2. Methyl methacrylate 5%;

[0070] 3. Oxidized polyethylene wax 10%;

[0071] 4. Talc powder 80%;

[0072] Components A and B are mixed according to the mass percentage of 80% of A and 20% of B.

[0073] The performance index of the present embodiment plugging paste is:

[0074] Fluidity: no free flow, fluidity 12cm, plastic deformation under pressure: initial injection pressure 9.0MPa;

[0075] Water solubility: insoluble in water, water environment consolidation performance: consolidation time at 60°C consolidation temperature: 660min, 24h post-consolidat...

Embodiment 2

[0078] A drilling water environment consolidation plugging paste consists of the following components by weight percentage:

[0079] 1. Phenol furfural resin 25%;

[0080] 2. Polyurethane modified epoxy resin 25%;

[0081] 3. Novolac vinyl ester resin 30%;

[0082] 4. Oxidized polyethylene wax 15%;

[0083] 5. Acetone 5%;

[0084] Component B:

[0085] 1. Hydroxydiethyltriamine 5%;

[0086] 2. Methyl methacrylate 5%;

[0087] 3. Oxidized polyethylene wax 10%;

[0088] 4. Talc powder 80%;

[0089] A and B components are mixed according to the ratio of A 80% and B 20%.

[0090] The performance index of the present embodiment plugging paste is:

[0091] Fluidity: no free flow, fluidity 16cm, plastic deformation under pressure: initial injection pressure 7.2MPa;

[0092] Water solubility: insoluble in water, water environment consolidation performance: consolidation time at 60°C consolidation temperature: 118min, 24h strength after consolidation at the aforementioned tem...

Embodiment 3

[0095] A drilling water environment consolidation plugging paste consists of the following components by weight percentage:

[0096] 1. Phenol furfural resin 20%;

[0097] 2. Polyurethane modified epoxy resin 20%;

[0098] 3. Novolac vinyl ester resin 20%;

[0099] 4. Oxidized polyethylene wax 5%;

[0100] 5. Acetone 35%;

[0101] Component B:

[0102] 1. Hydroxydiethyltriamine 15%;

[0103] 2. Methyl methacrylate 25%;

[0104] 3. Oxidized polyethylene wax 20%;

[0105] 4. Talc powder 40%;

[0106] A and B components are mixed according to the ratio of A 80% and B 20%.

[0107] The performance index of the present embodiment plugging paste is:

[0108] Fluidity: no free flow, fluidity 13cm, plastic deformation under pressure: initial injection pressure 9.0MPa;

[0109] Water solubility: Insoluble in water, water environment Consolidation performance: Consolidation time at 60°C consolidation temperature: 560min, 24h post-consolidation strength at the aforementioned te...

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Abstract

The invention discloses a water environment delayed consolidation leakage stopping paste used for drilling wells, and belongs to the field of petroleum drilling engineering leakage stopping agents. The leakage stopping paste comprises a component A and a component B; the component A comprises multi-component resin, a flow type regulator and auxiliary materials, and the multi-component resin comprises modified furfural resin, modified epoxy resin and modified vinyl resin; and the component B comprises an initiator, a cross-linking agent, the flow type regulator and an inert material. The leakage stopping paste is an organic paste with the characteristics of unable free flowing, compression plastic deformation, consolidation in water environment and adjustable consolidation time at different temperatures, solves the problems of difficulty in judgment of the shape and the dimensions of a leakage layer and a channel at different temperatures and difficulty in successful leakage stopping of a water layer and especially a flowing water leakage layer, and improves the leakage stopping success rate (leakage loss reduction and time saving).

Description

technical field [0001] The invention belongs to the field of plugging agents for oil drilling engineering, and in particular relates to an agent that can not be affected by the water environment when the channel shape and size of the leaking layer are unclear in oil drilling engineering, and the leaking layer is a water layer, especially when there is flowing water. It is a plugging glue (paste) body that cannot flow freely, can be adaptively deformed according to the shape and size of the leakage layer under pressure, and can be consolidated and reach a certain strength at a certain temperature and within a certain period of time. Background technique [0002] The plugging colloids of existing oil drilling plugging include organic gels and inorganic gelling materials (cement), such as: [0003] 1. Chinese patent application number: 201610099775.8, a smart gel particle that can be recrosslinked under formation conditions and its preparation method and application. The smart...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/46
CPCC09K8/426C09K8/46
Inventor 操亮操晶周翰林友建
Owner CHENGDU DEDAO IND
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