CN103773334A

CN103773334A - Leaking stoppage reinforcing agent

Info

Publication number: CN103773334A
Application number: CN201310748373.2A
Authority: CN
Inventors: 隋跃华; 关芳; 赵小平; 李子杰; 王树伟; 刘业; 崔西奎; 王同伟; 曹志瑞; 孙铭杰; 李洪胜; 钟金彩; 张晓军; 马玉峥; 刘晓坤; 刘振娜
Original assignee: DONGYING TAIER PETROLEUM TECHNOLOGY Co Ltd
Current assignee: DONGYING TAIER PETROLEUM TECHNOLOGY Co Ltd
Priority date: 2013-12-31
Filing date: 2013-12-31
Publication date: 2014-05-07
Anticipated expiration: 2033-12-31
Also published as: CN103773334B

Abstract

The invention discloses a leaking stoppage reinforcing agent which comprises the following components in parts by weight: 2-8 parts of urea resin, 1-5 parts of phenolic resin, 8-15 parts of slag, 1-5 parts of calcium sulfate, 5-8 parts of aluminum oxide, 3-6 parts of calcium chloride, 10-20 parts of calcium carbonate, 10-20 parts of silicon oxide, 0.1-0.4 part of polyanionic cellulose PAC-LV and 0.1-0.4 part of sodium carboxymethylcellulose CMC-LV. The leaking stoppage reinforcing agent is prepared by the steps of sequentially adding the components in parts by weight into a reaction kettle according to a conventional preparation method at 30-50 DEG C under normal pressure, stirring and mixing for 6-8 hours, subsequently adding the components into a kneading machine, uniformly mixing and stirring, drying, and crushing into a powder product with the particle size of 0.01-0.5mm. The leaking stoppage reinforcing agent has a remarkable leaking stoppage and reinforcing effect, is temperature resisting, good in stability and coagulability, high in structural stoppage capability and good in compatibility, can be thickened without solidification, is controllable in reinforcing time, wide in application range, safe in construction and free of toxicity or pollution, can be widely applied to petroleum and geological drilling process, and is particularly applicable to leaking stoppage construction in large cracks, large karst caves, underground rivers, severe deficit earth layers and crushed earth layers.

Description

Leak stopping toughener

Technical field

The present invention relates to drilling plugging agent, particularly a kind of leak stopping toughener.

Background technology

The plugging agent that existing petroleum drilling uses, the general materials such as calcium chloride, silicate (water glass potassium silicate) etc., steel ball, perlite, mosaic, calcium carbonate that adopt do leak stopping toughener, be added in dissimilar plugging agent formula, to improve the intensity of plugging agent, although these plugging agents have been brought into play effect for petroleum drilling, but exist following shortcoming or deficiency: (1) calcium chloride, silicate have a big risk simultaneously, the difficult grasp of dosage in leak stopping slurry, the speed that improves leak stopping slurry intensity is difficult to control, the speed of condensing is difficult to adjust, and construction risk is large.(2) inorganic salt are added in testing instrument, large to leak stopping slurry performance impact, cause fast thickening, layering, coagulating sedimentation, make leak stopping slurry unstable.(3) in leak stopping slurry, add the material such as perlite, mosaic, calcium carbonate of inertia, there is no coagulability, and because hardness is fragile to pump greatly, cause constructing continuously to the raising of intensity is inhomogeneous, plugging time is long; (4) large on the impact of pump, when serious, cause down-hole situation complicated, make leak stopping slurry can not inject drop ply, drilling tool can rise out, is solidificated in well; (5) function singleness, intensity is low, bad adaptability, use cost is high; (6) the blocking construction cycle long, in crack and Karst Cave Formation leak stopping, because the low sealing ratiod that causes of plugging agent intensity is low, plugging effect is poor, increases construction cost.

Summary of the invention

The object of this invention is to provide a kind of leak stopping toughener, adopt the grain diameter of sizes different hardness, particle in the time that prepare on ground is scattered in leak stopping system, when entering after leakage channel, at reservoir pressure and temperature, plugging agent condenses into coagulation structure at leakage channel, thereby effectively form the congealed solid that anti-pressure ability is strong, increase the intensity of plugging agent, effectively overcome or avoid the shortcoming or the deficiency that in above-mentioned prior art, exist, effectively improved plugging effect and drilling speed

Its composition of leak stopping toughener of the present invention and content, content is weight part: Precondensed UreaFormaldehyde Resin 2-8; Resol 1-5; Slag 8-15; Calcium sulfate 1-5; Aluminum oxide 5-8 calcium chloride 3-6; Calcium carbonate 10-20; Silica 1 0-20; Polyanionic Cellulose PAC-LV 0.1-0.4; Xylo-Mucine CMC-LV 0.1-0.4.

Compound method: above-mentioned substance is by its component and content, and under 30 ℃ of-50 ℃ of normal pressures, normal compound method adds the mixed 6-8h of stirring in reactor successively, then add in kneader, mixing and stirring, treats that it dry, pulverize into the powder that particle diameter is 0.01mm – 0.5mm.

The present invention compared with prior art tool has the following advantages or beneficial effect:

1, leak stopping toughener joins in leak stopping slurry, stable performance, and system is even, and suspended dispersed good stability is starched performance without impact to leak stopping;

2, leak stopping toughener joins in dissimilar leak stopping slurry, has significant leak stopping reinforced effects.

3, add after toughener, leak stopping slurry performance capable of regulating, the intensity of leak stopping slurry can be controlled, and plugging structure ability is strong; Be easy to form and there is high-intensity stopper in leakage channel;

4, compatibility is good, joins in dissimilar leak stopping slurry, and not stratified, rapid precipitation not, does not flocculate, and thickening time rate of set is adjustable.It is safe,

5, use range is wide, can in dissimilar leak stopping slurry, use, and all has good reinforced effects;

6, easily pump into, can meet heavy dose of construction continuously, easy to operate, safely and fast.

7, on environment without impact, nontoxic pollution-free.

Embodiment

A kind of leak stopping toughener, its composition and content, content is weight part: Precondensed UreaFormaldehyde Resin 2-8; Resol 1-5; Slag 8-15; Calcium sulfate 1-5; Aluminum oxide 5-8 calcium chloride 3-6; Calcium carbonate 10-20; Silica 1 0-20; Polyanionic Cellulose PAC-LV 0.1-0.4; Xylo-Mucine CMC-LV 0.1-0.4.

When use, in plugging drilling fluid, add the leak stopping toughener of the present invention of plugging drilling fluid total amount 2 ﹪-15 ﹪.

Provide specific embodiment below:

The 1st example

Precondensed UreaFormaldehyde Resin 2; Resol 1; Slag 8; Calcium sulfate 1; Aluminum oxide 5; Calcium chloride 3; Calcium carbonate 10; Silica 10; Polyanionic Cellulose PAC-LV 0.1; Xylo-Mucine CMC-LV 0.1.By above-mentioned substance, by its component and content, under 30 ℃, normal pressure, normal compound method adds successively in reactor and stirs mixed 6h, then adds in kneader, and mixing and stirring, treats that it dry, pulverize into the powder that particle diameter is 0.01mmmm.

In plugging drilling fluid, add the leak stopping toughener of the present invention of plugging drilling fluid total amount total amount 2 ﹪.

The 2nd example

Precondensed UreaFormaldehyde Resin 4; Resol 3; Slag 10; Calcium sulfate 3; Aluminum oxide 6; Calcium chloride 4; Calcium carbonate 13; Silica 13; Polyanionic Cellulose PAC-LV 0.2; Xylo-Mucine CMC-LV 0.2.By above-mentioned substance, by its component and content, under 40 ℃ of normal pressures, normal compound method adds the mixed 7h of stirring in reactor successively, then adds in kneader, and mixing and stirring, treats that it dry, pulverize into the powder that particle diameter is 0.1mm.

In plugging drilling fluid, add the leak stopping toughener of the present invention of plugging drilling fluid total amount total amount 8 ﹪.

The 3rd example

Precondensed UreaFormaldehyde Resin 8; Resol 5; Slag 15; Calcium sulfate 5; Aluminum oxide 8; Calcium chloride 6; Calcium carbonate 20; Silicon-dioxide 20; Polyanionic Cellulose PAC-LV 0.4; Xylo-Mucine CMC-LV 0.4.By above-mentioned substance, by its component and content, under 50 ℃ of normal pressures, normal compound method adds the mixed 8h of stirring in reactor successively, then adds in kneader, and mixing and stirring, treats that it dry, pulverize into the powder that particle diameter is 0.5mm.

When use, in plugging drilling fluid, add the leak stopping toughener of the present invention of plugging drilling fluid total amount total amount 15 ﹪.

The 4th example

Precondensed UreaFormaldehyde Resin 6; Resol 4; Slag 12; Calcium sulfate 4; Aluminum oxide 7; Calcium chloride 5; Calcium carbonate 16; Silica 16; Polyanionic Cellulose PAC-LV 0.3; Xylo-Mucine CMC-LV 0.3.By above-mentioned substance, by its component and content, under 35 ℃ of normal pressures, normal compound method adds the mixed 6h of stirring in reactor successively, then adds in kneader, and mixing and stirring, treats that it dry, pulverize into the powder that particle diameter is 0.3mm.

In plugging drilling fluid, add the leak stopping toughener of the present invention of plugging drilling fluid total amount total amount 12 ﹪.

The 1st example, the 2nd example, the 3rd example are embodiment, and the 4th example is comparative example, in trying out at the scene, have leak stopping and consolidation effect very.

Claims

1. a leak stopping toughener, its component and content, content is weight part:

Precondensed UreaFormaldehyde Resin 2-8

Resol 1-5

Slag 8-15

Calcium sulfate 1-5

Aluminum oxide 5-8

Calcium chloride 3-6

Calcium carbonate 10-20

Silica 1 0-20

Polyanionic Cellulose PAC-LV 0.1-0.4

Xylo-Mucine CMC-LV 0.1-0.4;