CN1073141C - Polymer fluid loss reducing additive for drilling fluid - Google Patents
Polymer fluid loss reducing additive for drilling fluid Download PDFInfo
- Publication number
- CN1073141C CN1073141C CN 99100026 CN99100026A CN1073141C CN 1073141 C CN1073141 C CN 1073141C CN 99100026 CN99100026 CN 99100026 CN 99100026 A CN99100026 A CN 99100026A CN 1073141 C CN1073141 C CN 1073141C
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- CN
- China
- Prior art keywords
- drilling fluid
- polymer
- ammonium salt
- hydrolyzed polyacrylonitrile
- nanmu powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Colloid Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a polymer filtration reducing agent for drilling fluid, which is prepared by mixing hydrolyzed polyacrylonitrile ammonium salt used as the main polymer, nanmu powder used as the auxiliary polymer and sodium carbonate used as modified regulation and control agents, wherein the ingredients have the weight percentage: 40% to 70% of hydrolyzed polyacrylonitrile ammonium salt, 20% to 40% of nanmu powder and 5% to 20% of sodium carbonate. The present invention has the effects of resisting temperature as high as 140 DEG C, reducing filtrate water loss, cutting adhesion, preventing collapse, etc. and becomes a multifunctional treating agent for drilling fluid systems of fresh water, salt water and cationic gel.
Description
The present invention relates to a kind of additive for drilling fluid.
Usually use the treatment agent of single component at present in the oil field drilling fluids treatment agent, as the hydrolyzed polyacrylonitrile ammonium salt, it is exactly one of wider large material of use range, year, consumption was about ten thousand tons, to fall dehydration effect not too remarkable but this agent is used for concentrated water type and hyposaline mud, and its salt resistance, to fall performances such as vector, high temperature resistance, anti-collapse leak stopping general.
The objective of the invention is to overcome the deficiency of above-mentioned prior art, provide a kind of salt resistance good, it is low to fall vector, high temperature resistance, the polymer fluid loss reducing additive for drilling fluid of anti-collapse leak stopping.
The objective of the invention is to realize by following technical proposals:
Polymer fluid loss reducing additive for drilling fluid is to be that host polymer, nanmu powder are that auxiliary polyalcohol, yellow soda ash are that three components of modification adjusting control agent mix with the hydrolyzed polyacrylonitrile ammonium salt, wherein the weight percentage ranges of each component be hydrolyzed polyacrylonitrile ammonium salt 40%-70%, nanmu powder 20%-40% (wherein, nanmu powder russet is 8%-10%, and surplus is khaki nanmu powder), yellow soda ash 5%-20%.
Host polymer hydrolyzed polyacrylonitrile ammonium salt described in the technique scheme is to use the acrylic fibers tankage under the normal atmosphere of 0.1-0.2MPa, add after the ratio hydrolysis of water 1: 2-3 (weight ratio) colloid, get its cleaning colloid through precipitation, behind centrifugal spray drying, obtain.
The present invention is that host polymer, nanmu powder are that auxiliary polyalcohol, yellow soda ash are that three components of modification adjusting control agent mix with the hydrolyzed polyacrylonitrile ammonium salt, auxiliary polyalcohol nanmu powder is a kind of natural high moleculer eompound, in additive for drilling fluid, use as additive, it is divided into two kinds in khaki color powder and sorrel powder, have leak-off effect and the good anticalcium ability of falling, and have the effect that the enhancing drilling fluid is structural and improve viscosity, also have certain leakproof, leak stopping and lubrication.Through experiment, treatment agent of the present invention has stronger anti-salt, anticalcium, anti-140 ℃ of high temperature, fall ability such as dehydration, is applicable in fresh water, salt solution, the positive colloid system, is particularly useful for the positive colloid system.Tackify and foaming phenomenon are arranged in salt-water drilling fluid slightly, but do not influence use.Because concentrated water type and contain cream salt stratum ubiquity, this agent is remarkable to this situation effect, therefore has good social benefit and economic benefit.In addition, this treatment agent has characteristics with low cost.Following subordinate list and contrast table relatively further specify outstanding feature of the present invention.
Subordinate list
| Project | Fresh-water drilling fluid | The positive colloid drilling fluid | Salt-water drilling fluid | |
| The base slurry | FL ml | 22.0-25.0 | 29.0-35.0 | 48.0-54.0 |
| AV mpa.s | 4.0-10.0 | 4.0-12.0 | 4.0-9.0 | |
| The base slurry is after 3g/L of the present invention handles | FL ml | ≤15.0 | ||
| AV mpa.s | ≤10.0 | |||
| The base slurry is after 4g/L of the present invention handles | FL ml | ≤18.0 | ||
| AV mpa.s | ≤12.0 | |||
| The base slurry is after 15g/L of the present invention handles | FL ml | ≤20.0 | ||
| AV mpa.s | ≤14.0 | |||
Contrast table (performance of hydrolyzed polyacrylonitrile ammonium salt additive for drilling fluid)
| Project | Index | ||
| Fresh-water drilling fluid | Salt-water drilling fluid | ||
| The base slurry | Filter loss, ml | 25±2.0 | 55±3.0 |
| Apparent viscosity, mPa.s | 6.0-8.0 | 5-7 | |
| After this treatment agent is handled | Filter loss, ml | ≤14.0 | ≤30.0 |
| Apparent viscosity, mPa.s | ≤8.0 | ≤8.0 | |
The present invention will now be further detailed embodiment:
At first use 250 kilograms of acrylic fibers tankage and water to drop into reactor with 1: 2.5 ratio, pressure is 0.1-0.2MPa, react 3 hours, colloid, precipitation, filtration is after centrifugal spray drying winner polymkeric substance hydrolyzed polyacrylonitrile ammonium salt.Host polymer hydrolyzed polyacrylonitrile ammonium salt is the commercially available prod.
Embodiment 1: get 55 kilograms of host polymer hydrolyzed polyacrylonitrile ammonium salts, 30 kilograms in auxiliary polyalcohol nanmu powder (khaki color powder), 10 kilograms in nanmu powder (sorrel powder), yellow soda ash (Na
2CO
3) 5 kilograms, put into agitator respectively and stir and promptly get product.Product appearance is the light tan powder.Using method of the present invention is identical with general treatment agent.
Embodiment 2: get 50 kilograms of host polymer hydrolyzed polyacrylonitrile ammonium salts, 37 kilograms in auxiliary polyalcohol nanmu powder (khaki color powder), 8 kilograms in nanmu powder (sorrel powder), yellow soda ash (Na
2CO
3) 5 kilograms, put into agitator respectively and stir and promptly get product.Product appearance is the light tan powder.Using method of the present invention is identical with general treatment agent.
Claims (2)
1. polymer fluid loss reducing additive for drilling fluid is characterized in that it is is that host polymer, nanmu powder are that auxiliary polyalcohol, yellow soda ash are that three components of modification adjusting control agent mix with the hydrolyzed polyacrylonitrile ammonium salt, and wherein the weight percentage ranges of each component is:
Hydrolyzed polyacrylonitrile ammonium salt 40%-70%;
Nanmu powder 20%-40%, wherein, nanmu powder russet is 8%-10%,
Surplus is khaki nanmu powder;
Yellow soda ash 5%-20%.
2. polymer fluid loss reducing additive for drilling fluid according to claim 1, it is characterized in that described host polymer hydrolyzed polyacrylonitrile ammonium salt is to use the acrylic fibers tankage under the normal atmosphere of 0.1-0.2MPa, add after the ratio hydrolysis of water 1: 2-3 (weight ratio) colloid, get its cleaning colloid through precipitation, behind centrifugal spray drying, obtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99100026 CN1073141C (en) | 1999-01-06 | 1999-01-06 | Polymer fluid loss reducing additive for drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99100026 CN1073141C (en) | 1999-01-06 | 1999-01-06 | Polymer fluid loss reducing additive for drilling fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1227247A CN1227247A (en) | 1999-09-01 |
| CN1073141C true CN1073141C (en) | 2001-10-17 |
Family
ID=5269736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99100026 Expired - Fee Related CN1073141C (en) | 1999-01-06 | 1999-01-06 | Polymer fluid loss reducing additive for drilling fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1073141C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955757B (en) * | 2010-08-25 | 2012-07-18 | 石家庄华莱鼎盛科技有限公司 | Hydrolyzed polyacrylonitrile-compound ammonium salt for drilling fluid |
| CN102276773A (en) * | 2011-03-28 | 2011-12-14 | 河北永达化工有限公司 | Bipoly ammonium salt for drilling fluid |
| GB201317626D0 (en) * | 2013-10-04 | 2013-11-20 | Schlumberger Holdings | Solids in borehole fluids |
-
1999
- 1999-01-06 CN CN 99100026 patent/CN1073141C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1227247A (en) | 1999-09-01 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |