CN1039344C - Leakage blocking wall protective processing agent for well drilling - Google Patents
Leakage blocking wall protective processing agent for well drilling Download PDFInfo
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- CN1039344C CN1039344C CN 92107169 CN92107169A CN1039344C CN 1039344 C CN1039344 C CN 1039344C CN 92107169 CN92107169 CN 92107169 CN 92107169 A CN92107169 A CN 92107169A CN 1039344 C CN1039344 C CN 1039344C
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- blocking wall
- processing agent
- wall protective
- leakage
- leakage blocking
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Abstract
The present invention relates to a leakage blocking wall protective processing agent for drilling wells, which uses the powder of natural bamboo leaves and nanju roots as a main raw material; the leakage blocking wall protective processing agent for drilling wells is prepared by compounding the following components by weight proportion: 30 to 90 of the powder of bamboo leaves and nanju roots, 0 to 50 of humic acid and derivative thereof, 0 to 45 of tackifier, 1 to 15 of flocculant and 0 to 50 of expanding material. The leakage blocking wall protective processing agent for drilling wells has the performance indexes that water content is at most 15%, plastic viscosity is at least16mPa. S, the dynamic shearing force is at least 6Pa and the adhesive force is at least 0.18MPa; the pH value is 9+/-0.5. When used for blocking leakage, the leakage blocking wall protective processing agent for drilling wells which does not need stopping and waiting for time has the advantages of high success rate, obvious effect, long keeping time, simple use, low dosage, low cost, no poison, no taste and no environment pollution.
Description
The present invention relates to a kind of leakage blocking wall protective processing agent for well drilling, treatment agent is to be main component with the natural vegetable powder that contains vegetable jelly, the composite product that constitutes with humic acids and derivative, tackifier, flocculation agent and expanding material.
Leakage is one of common and complex situation in the drilling well, and it not only expends rig time, expensive mud, the increase drilling expense of loss, and might cause a series of serious problems such as bit freezing, blowout, slump in, even makes the drilling well subscription rate.At this situation, vast probing scientific and technical personnel have developed much quite fruitful plugging agent and leakage stopping technology.As the grout leak stopping.Bridging agent, shear-thickening liquid, liquid sleeve pipe etc., the weak point of these technical schemes is: 1. curing time is long, and 2. leak stopping success ratio generally is no more than 70%, 3. destroys the drilling mud performance.A kind of drilling plugging agent that Chinese patent application 91106634.9 is introduced, its composition is Chinese bandoline wood 30-80, potassium humate 10-50, carboxymethyl cellulose 1-6, polyacrylamide 1-6, sea-tangle powder 1-2, performance index are: plastic viscosity＞12, yield value＞3, adhesive power＞0.16.The above-mentioned relatively shortcoming of this plugging agent improves to some extent or breaks through, but also exists some shortcomings: 1. and be main raw material with the wood shavings nanmu, under the situation of timber resources anxiety, the raw material supply difficulty; 2. as the wood powder of main component, its anticorrosion problem is outstanding, and during especially for petroleum drilling, plugging agent is easily addled; 3. plugging effect is not ideal enough.
For addressing the above problem, the objective of the invention is, provide a kind of aboundresources of main raw material, the leakage blocking wall protective processing agent for well drilling anticorrosion, that use properties is good.
Described treatment agent is to be main component with natural phant faber phoebe tree root powder, and all the other are the composite product that humic acids and derivative, tackifier, flocculation agent and expanding material are formed.Its proportioning (weight %) is:
Faber phoebe root powder 30-90
Humic acids and derivative 0-50 thereof
Tackifier 0-45
Flocculation agent 1-15
Expanding material 0-50
In the above-mentioned component, faber phoebe root powder is to be made by the faber phoebe tree root, and the faber phoebe tree is commonly called as nanmu, is a kind of shrub plant, is distributed in areas such as Fujian Province, and the main component of its tree root is Mierocrystalline cellulose, this quality, poly-pentose, when adding no CO
2Distilled water the time, the pH value of solution value that is made into is about 6.5, can illustrate tentatively that its macromole belongs to the high molecular polymer of non-ionic type, thereby performance is comparatively stable.
The humic acids and the system macromolecular organic compound of deriving thereof.It is the product that makes through chemical reaction by weathered coal or brown coal, tens kinds of potassium humate, Sodium salts humic acids, humic acids iron, ferripotassium humic acids, sodium humate sulfomethylation, nitro-humic acid sodium, KP multipolymer, HOP-N1 etc. are arranged at present, any product all can use, but is best with the effect of high-valency metal humate.
Tackifier should select tackify effective, as high viscosity carboxymethyl starch sodium; Also should select high temperature resistant property good when being used for the oil well plugging agent, as high viscosity carboxymethyl cellulose, sepiolite, attapulgite, modified asbestos etc.
Flocculation agent preferably flocculating effect well has simultaneously viscosifying action again, as the polyacrylamide of high molecular, low in hydrolysis degree etc.Its molecular weight 〉=5,000,000, degree of hydrolysis≤30%.
Expanding material comprises leather powder, sea-tangle powder, analysis for soybean powder etc.
The preparation method of described treatment agent is:
Cleaning, exsiccant faber phoebe tree root are pulverized, made faber phoebe tree root powder.By the proportioning that provides, various raw materials are carried out composite, be the treatment agent product after mixing.
Crosslinked grade for reaction can take place rapidly after meeting water in treatment agent of the present invention, formation has the thick reticulated structure than strongly adherent, form different granular, sheets, fibrous leakage stop, thereby realize that it has the following advantages to the rapid and reliable obstruction of leakage channel:
1. can lost circulation additive, need not stop the time for the treatment of with brill with stifled, and the leak stopping operating time compare with aforementioned plugging agent and also want much less, thereby saved and treated the time with fixed attention, reduced drilling cost.
2. leak stopping success ratio height, instant effect, the hold-time is long, handles medium and small leakage success ratio and is generally 100%, and the success ratio of handling other leakages is more than 80%.
3. cooperate plugging agent and other inert materials applicable to multiple leakage type, and effective.
4. the leak stopping slurries not only do not destroy used property of drilling fluid, and can improve property of drilling fluid or replace drilling fluid, have improvement of mud cake, anti-collapse, retaining wall, flocculation rock dust and suppress effect such as shale hydration swelling.
5. using method is simple, and consumption is few, and the leak stopping cost is low.
6. nontoxic, tasteless, harmless, non-environmental-pollution.
7. the source of used main raw material faber phoebe tree root is wide, raw materials cost is low.
8. have certain high temperature resistance (120 ℃), anti-salt, anticalcium performance.
The plugging agent performance comparison of introducing with 91106634.9 patent applications is as follows:
The relevant embodiment in moisture content % pH value plastic viscosity mPa.S yield value Pa adhesive power MPa correlation technique≤15 9 ± 0.5 〉=12 〉=3 〉=0.16 the present invention≤15 9 ± 0.5 〉=16 〉=6 〉=0.18:
1. choose inclusion-free, no mud, cellulose, art quality, poly-pentose are more than 90%, and the faber phoebe tree root that length of string 〉=8cm is long is dried to moisture≤15%, be crushed to and be narrower than 30 orders with converting mortar method or hammering method or ball milled then, promptly get faber phoebe tree root powder.
2. the leftover bits with leather are dried to moisture≤10%, are crushed to be narrower than 20 orders, promptly get the leather powder; Greedy with the sea-tangle cleaning, drying to moisture≤13%, be crushed to and be narrower than 20 orders, promptly get the sea-tangle powder, soya bean is dried to moisture≤10% is crushed to and is narrower than 20 orders, promptly gets analysis for soybean powder.
3. all the other components are selected the commercially available prod for use.One, proportioning (weight %):
Faber phoebe tree root powder ferripotassium humic acids carboxymethyl cellulose polyacrylamide leather powder
1. 48 44 3 2 3
2. 85 10 3 2
3. 35 35 5 5 20
4. 40 40 10 5 5
5. 40 40 5 10 5
Faber phoebe tree root powder potassium humate sodium starch glycolate polyacrylamide
6. 48 45 5 2
Faber phoebe tree root powder modified asbestos polyacrylamide leather powder
7. 50 45 2 3
Faber phoebe tree root powder humic acids ferrochrome carboxymethyl cellulose polyacrylamide sea-tangle powder
8. 50 43 2 2 3
Faber phoebe tree root powder sepiolite carboxymethyl cellulose modified asbestos polyacrylamide
9. 50 30 5 10 5
Faber phoebe tree root powder attapulgite carboxymethyl cellulose modified asbestos polyacrylamide 10. 50 25 5 15 52, performance:
Moisture content % pH value plastic viscosity mPa.S yield value Pa adhesive power MPa
1. ≤15 9±0.5 ≥16 ≥6 ≥0.18
2. ≤15 8±0.5 ≥17 ≥7 ≥0.18
3. ≤14.5 9±0.5 ≥17 ≥7 ≥0.19
4. ≤15 9±0.5 ≥18 ≥8 ≥0.18
5. ≤15 9±0.5 ≥19 ≥8 ≥0.18
6. ≤15 9±0.5 ≥16.5 ≥7 ≥0.18
7. ≤15 9±0.5 ≥16 ≥6 ≥0.20
8. ≤15 9±0.5 ≥16 ≥6 ≥0.18
9. ≤15 8.5±0.5 ≥18 ≥8 ≥0.21 10. ≤15 8.5±0.5 ≥18 ≥8 ≥0.20
The consumption and the using method of treatment agent of the present invention are as follows: one, suggestion consumption
1. slight leakage.The treatment agent that in clear water, nonclay flush fluid or mud, adds 1-3%.
2. medium leakage.In clear water, nonclay flush fluid or mud, add the treatment agent of 2-4%, and be equipped with the inert material of 50-200% (by treatment agent weight), as Exocarpium Gossypii powder, walnut shell flour, sheet mica, peanut hull meal, sawdust etc.
3. severe leakage.In clear water, nonclay flush fluid or mud, add the treatment agent of 3-5%, and be equipped with the inert material of 50-300% (by treatment agent weight).
4. especially big leakage.Can determine the treatment agent dosage according to different situations, be not less than 6% at least, other patching materialss of fits best are taked the comprehensive regulation.Two, using method
1. slight leakage.
Directly add in the washing fluid with reference to consumption by above-mentioned, stir a little and make it fully to dissolve dispersion, pump into the leak stopping that circulates in the boring then, leave standstill leak stopping or pressure sealing, pressure is 3.5-4.5MPa, and the time was generally 25-35 minute.
2. medium leakage.
1. directly add in the washing fluid by above-mentioned prescription and undertaken by using method 1;
2. by a certain percentage (be generally about the 5-10% of treatment agent slurries body) and be made into thickness leak stopping slurries, directly pour into from the aperture, pressurization 25-35 minute again circulates on the slurries face.
3. severe leakage.
1. undertaken by the second method in the medium leakage;
2. make the mud ball that contains treatment agent 10-20% and directly throw in extruding;
3. can cooperate sea-tangle or inert material to drop in the hole by turns when above-mentioned two kinds of methods are used pressurizes again.
4. especially big leakage.
1. earlier with material fillings such as sand, small crushed stones, undertaken by handling the severe leakage method again;
2. adopt repeatedly blocking method, promptly repeat by handling the severe leakage method;
3. elder generation destroys big crack solution cavity with directional blasting method, makes it to rearrange to become rimala, is undertaken by handling the severe leakage method again.
Claims (5)
1. leakage blocking wall protective processing agent for well drilling is characterized in that following composition (weight %):
Faber phoebe tree root powder 30-90, flocculation agent 1-15, humic acids and derivative 0-50 thereof, tackifier 0-45, expanding material 0-50, described flocculation agent is molecular weight 〉=5,000,000, the polyacrylamide of degree of hydrolysis≤30%, described humic acids and derivative thereof are potassium humate, Sodium salts humic acids, humic acids iron, the ferripotassium humic acids, sodium humate sulfomethylation, nitro-humic acid sodium, described expanding material is the leather powder, the sea-tangle powder, analysis for soybean powder, described tackifier are high viscosity carbonyl methyl starch sodium, high viscosity carboxymethyl cellulose, sepiolite, attapulgite, modified asbestos, to humic acids and derivative thereof, tackifier, three kinds of components of expanding material are allocated wherein 2 kinds simultaneously into.
2. using method of leakage blocking wall protective processing agent for well drilling according to claim 1 is characterized in that:
Slight leakage, described leakage blocking wall protective processing agent for well drilling consumption is 1-3%, adds in clear water, nonclay flush fluid or the mud, stirs and makes it fully to dissolve dispersion, pumps into boring then.
3. using method of leakage blocking wall protective processing agent for well drilling according to claim 1 is characterized in that:
Medium leakage, described leakage blocking wall protective processing agent for well drilling consumption is 2-4%, adds in clear water, nonclay flush fluid or the mud, stirs and makes it fully to dissolve dispersion, pump into boring then or be made into thickness leak stopping slurries, directly pour into from the aperture by the 5-10% of treatment agent slurries body.
4. using method of leakage blocking wall protective processing agent for well drilling according to claim 1 is characterized in that:
Severe leakage, described leakage blocking wall protective processing agent for well drilling consumption is 3-5%, adds in clear water, nonclay flush fluid or the mud dress, stirs and makes it fully to dissolve dispersion, pours directly from the aperture then or make that to contain treatment agent be that the mud ball of 10-20% is directly thrown in extruding into.
5. using method of leakage blocking wall protective processing agent for well drilling according to claim 1 is characterized in that:
Especially big leakage, described leakage blocking wall protective processing agent for well drilling consumption is not less than 6%, adds in clear water, nonclay flush fluid or the mud, stirs and makes it fully to dissolve dispersion, pours directly from the aperture then or make that to contain treatment agent be that the mud ball of 10-20% is directly thrown in extruding into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92107169 CN1039344C (en) | 1992-09-30 | 1992-09-30 | Leakage blocking wall protective processing agent for well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92107169 CN1039344C (en) | 1992-09-30 | 1992-09-30 | Leakage blocking wall protective processing agent for well drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1084875A CN1084875A (en) | 1994-04-06 |
| CN1039344C true CN1039344C (en) | 1998-07-29 |
Family
ID=4942726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92107169 Expired - Fee Related CN1039344C (en) | 1992-09-30 | 1992-09-30 | Leakage blocking wall protective processing agent for well drilling |
Country Status (1)
| Country | Link |
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| CN (1) | CN1039344C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618234A (en) * | 2011-03-30 | 2012-08-01 | 中国石油化工集团公司 | High sulfur-containing gas well gas testing commissioning operation temporary plugging agent |
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| CN1063772C (en) * | 1995-12-29 | 2001-03-28 | 四川石油管理局川东钻探公司 | Composite plugging agent for drilling and production process thereof |
| CN1096537C (en) * | 1999-07-12 | 2002-12-18 | 四川石油管理局川东钻探公司 | Acid-soluble plugging agent |
| CN100344723C (en) * | 2006-02-24 | 2007-10-24 | 西南石油学院 | Comprehensive performace regulator for well cementing cement slurry and its prepn |
| CN101955763B (en) * | 2010-05-14 | 2013-03-27 | 北京奥凯立科技发展股份有限公司 | High pressure-resistant leak stoppage agent and leak stoppage slurry containing same |
| CN102287162A (en) * | 2011-05-09 | 2011-12-21 | 白银有色集团股份有限公司 | Small fault leakage blocking method in drill hole |
| CN102603220B (en) * | 2012-04-01 | 2013-12-18 | 昌吉市先导工程材料有限责任公司 | Preparation of polymer composite gelling agent for grouting and application method thereof |
| CN102965084A (en) * | 2012-11-27 | 2013-03-13 | 唐山市金沙工贸有限公司 | Impermeable oil layer protective agent |
| CN103849363B (en) * | 2014-03-10 | 2016-08-17 | 东北石油大学 | A kind of thermal recovery vapour alters improvement gel-like double-liquid seal blocking agent and method for blocking thereof |
| CN108495821A (en) * | 2015-12-09 | 2018-09-04 | 高性能聚乙烯有限责任公司 | Composition for removing removing sulfate and metal from waste water and method |
| US10336930B2 (en) * | 2016-12-19 | 2019-07-02 | Saudi Arabian Oil Company | Date tree waste-based binary fibrous mix for moderate to severe loss control |
| CN111269702B (en) * | 2020-01-21 | 2022-02-15 | 中交第二航务工程局有限公司 | Tough environment-friendly slurry and preparation method and construction process thereof |
| CN114112850A (en) * | 2021-11-30 | 2022-03-01 | 西南石油大学 | Preparation method of thick mud cake and construction method of three-dimensional digital core of thick mud cake |
-
1992
- 1992-09-30 CN CN 92107169 patent/CN1039344C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618234A (en) * | 2011-03-30 | 2012-08-01 | 中国石油化工集团公司 | High sulfur-containing gas well gas testing commissioning operation temporary plugging agent |
| CN102618234B (en) * | 2011-03-30 | 2016-03-02 | 中国石油化工集团公司 | High sour gas well gas testing operation operation temporary plugging agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1084875A (en) | 1994-04-06 |
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