CN1233782C - Fluid loss additive in use for drilling fluid in oil field - Google Patents
Fluid loss additive in use for drilling fluid in oil field Download PDFInfo
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- CN1233782C CN1233782C CN 200410031188 CN200410031188A CN1233782C CN 1233782 C CN1233782 C CN 1233782C CN 200410031188 CN200410031188 CN 200410031188 CN 200410031188 A CN200410031188 A CN 200410031188A CN 1233782 C CN1233782 C CN 1233782C
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- xylogen
- ammonium salt
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- drilling fluid
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Abstract
The present invention relates to a fluid loss agent of oilfield drilling fluid, which is formed by that lignin adhesives, polyacrylic acid ammonium salts, urea, calcium carbonate with magnesium, and copolymers of acrylate are proportionally and uniformly mixed to prepare the powdery product of the present invention, and detailed proportioning is disclosed in the specification. The present invention has the advantages of abundant sources of raw materials, low cost, simple preparation, high temperature and salt resistance, good fluid loss reducing performance, inorganic ion pollution resistance, improved drilling rate and extended service life of oil wells. The raw materials of the present invention are waste materials of paper mills and textile mills, and the rheology of the mud is maintained; the present invention can avoid the collapse of hydrocarbon zones and lower the filter loss of the drilling fluid, and the occurrence of underground complex conditions is reduced. The present invention can be used for the oilfield drilling fluid.
Description
Technical field
The present invention relates to a kind of auxiliary agent of oil field welldrilling, specifically, relate to the fluid loss agent of oil field drilling fluids.
Background technology
In petroleum drilling work, need to add the used additive in some oil fields, for example, the high temperature salt resistant filter loss reduction agent to form no solid phase drilling mud system, reduces dehydration, and the protection oil reservoir is not subjected to the pollution of mud, improves drilling speed, reduces drilling cost etc.The fluid loss agent that prior art is used, carboxymethyl starch, Polyanionic Cellulose are arranged, the multipolymer (80A51) of activation ground barium sulfate, acrylate, sulfonated phenol formaldehyde resin etc., these fluid loss agents do not cost an arm and a leg, be exactly complex manufacturing, and produce the material of a large amount of contaminate environment, therefore, the fluid loss agent that needs the anti-salt of high temperature of a kind of excellent property of exploitation at present is to solve the problem that runs in the oil drilling.
Summary of the invention
The objective of the invention is to remedy the deficiencies in the prior art part, and a kind of high temperature salt resistant filter loss reduction agent easy, cheap, excellent property of producing is provided.
Purpose of the present invention can realize by following measure: a kind of fluid loss agent of oil field drilling fluids is to be made by the raw material of following weight %: the multipolymer 80A510-4.9% of self-control polyacrylonitrile ammonium salt 28-48.8%, self-control xylogen tackiness agent 25-58.8%, urea 5.3-11.0%, magniferous lime carbonate 4.3-10.3% and acrylate, by proportioning raw material is mixed, promptly get powdery product of the present invention.Product index sees Table 1.
Table 1
| Project | Index | ||
| Outward appearance | Pale brown toner end | ||
| Moisture | ≤15％ | ||
| After 180 ℃ of 16 hours heat are rolled | Middle press filtration vector (ml/30min) | The fresh water slurry | ≤4.0％ |
| Sodium-chlor pollutes slurry | ≤7.4％ | ||
| High temperature and high pre ssure filtration (ml/30min) | The fresh water slurry | ≤23％ | |
| Sodium-chlor pollutes slurry | ≤29％ | ||
| Apparent viscosity | The fresh water slurry | ≤13％ | |
| Sodium-chlor pollutes slurry | ≤25％ | ||
| Annotate: pressure standard drilling fluid test standard sodium soil 2, sample dosage during 1, wilkinite should meet: fresh water slurry, 3%; Sodium-chlor pollutes slurry, 4% | |||
The xylogen tackiness agent: from the industrial papermaking wastewater that is rich in xylogen, according to the content of xylogen, xylogen and sodium sulphite anhydrous 99.3 mol ratio are 1: 1, two kinds of raw materials are added in the reactor, 135-145 ℃, reacted 1.5-2.5 hour, be spray dried to powdery, promptly make the xylogen tackiness agent.Binder performance index: solid content 45-50%, proportion 1.27-1.3g/cm
2, water insoluble matter content＜0.5%, pH4-6, CL content＜1%.
Polyacrylonitrile ammonium salt: commercially available or self-control.The self-control method is as follows: from textile mills' waste material, waste material and ammonium chloride mol ratio are 1: 2, after the input retort, are warming up to 180-200 ℃, 19-20Kg/Cm
2, 10 hours, make polyacrylonitrile ammonium salt liquid, spray-dried, make solid polypropylene nitrile ammonium salt.
Magniferous lime carbonate: market is on sale, contains the sal epsom of 20-40% in lime carbonate.
The multipolymer of acrylate (80A51): market is on sale, and the polymerization under alkaline condition of acrylamide, formaldehyde and vinylformic acid obtains the 80A51 polymkeric substance.
The present invention has following advantage compared to existing technology: the present invention all utilizes the waste material of paper mill and textile mills; raw material sources are abundant; cost is low; prepare easy; keep drilling fluid rheology; dehydration ability height falls in the anti-salt of high temperature, and the protection hydrocarbon zone is anti-collapse; suppressing shale disperses; reduce drilling fluid filtration, regulate flow pattern and be not subjected to the pollution of mud, have the effect of carrying drilling cuttings and making the mud cake densification to protect oil reservoir; anti-mineral ion pollutes; improve drilling speed, reduce the chance that down hole problem occurs, prolong the oil well life-span.
Embodiment
Enumerate an embodiment below, the present invention is further specified, but the present invention is not only limited to this embodiment.
Embodiment 1
The preparation of xylogen tackiness agent: from the industrial papermaking wastewater that is rich in xylogen, according to the content of xylogen, xylogen and sodium sulphite anhydrous 99.3 mol ratio are 1: 1, two kinds of raw materials are added in the reactor, 140 ℃, reacted 2 hours, be spray dried to powdery, promptly make the xylogen tackiness agent.
The preparation of polyacrylonitrile ammonium salt: from textile mills' waste material and ammonium chloride mol ratio be drop into retort at 1: 2 after, heat up 190 ℃ pressure 20Kg/Cm
2, reacted 10 hours, make polyacrylonitrile liquid ammonium salt, spray-dried, make solid polypropylene nitrile ammonium salt.
In reactor, 2.45 kilograms of the multipolymer 80A51 of 12.5 kilograms in adding self-control xylogen tackiness agent, 24.4 kilograms of self-control solid polypropylene nitrile ammonium salts, 5.5 kilograms in urea, 5.15 kilograms in magniferous lime carbonate and acrylate promptly get yellow powder shape product after the mixing.
Product of the present invention is used for oil field drilling fluids.
Claims (1)
1. the fluid loss agent of an oil field drilling fluids, it is characterized in that it is to be made by the raw material of following weight %: the multipolymer 80A51 0-4.9% of self-control polyacrylonitrile ammonium salt 28-48.8%, self-control xylogen tackiness agent 25-58.8%, urea 5.3-11.0%, magniferous lime carbonate 4.3-10.3% and acrylate, by proportioning raw material is mixed, make powdery product of the present invention;
Described xylogen tackiness agent is from industrial papermaking wastewater, and according to the content of xylogen, xylogen and sodium sulphite anhydrous 99.3 mol ratio are 1: 1,135-145 ℃, reacts spraying drying powder-forming 1.5-2.5 hour;
Described polyacrylonitrile ammonium salt is from the waste material of textile mills, and waste material and ammonium chloride mol ratio are 1: 2, and elevated temperature is to 180-200 ℃, pressure 19-20Kg/Cm
2, 10 hours, make polyacrylonitrile ammonium salt liquid, spraying drying makes solid polypropylene nitrile ammonium salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410031188 CN1233782C (en) | 2004-04-14 | 2004-04-14 | Fluid loss additive in use for drilling fluid in oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410031188 CN1233782C (en) | 2004-04-14 | 2004-04-14 | Fluid loss additive in use for drilling fluid in oil field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563258A CN1563258A (en) | 2005-01-12 |
| CN1233782C true CN1233782C (en) | 2005-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410031188 Expired - Fee Related CN1233782C (en) | 2004-04-14 | 2004-04-14 | Fluid loss additive in use for drilling fluid in oil field |
Country Status (1)
| Country | Link |
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| CN (1) | CN1233782C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338169C (en) * | 2005-12-22 | 2007-09-19 | 新疆三精德润科技有限公司 | Fluid loss additive for boring fluid |
| CN101020814B (en) * | 2007-01-12 | 2010-10-13 | 中国石油集团钻井工程技术研究院 | Nanometer composite heat resisting fluid loss reducing agent and its preparation |
| CN102899007B (en) * | 2012-10-31 | 2013-11-06 | 中国石油大学(华东) | High-temperature resistant viscosity reducer for drilling fluids and preparation method for viscosity reducer |
| CN109401734A (en) * | 2018-10-20 | 2019-03-01 | 石家庄华莱鼎盛科技有限公司 | Fluid loss additive for boring fluid macromolecule polyester object and preparation method thereof |
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2004
- 2004-04-14 CN CN 200410031188 patent/CN1233782C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1563258A (en) | 2005-01-12 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Aokaili Technology Development Co.Ltd Assignor: Guo Liang Contract fulfillment period: 2007.10.15 to 2013.10.14 contract change Contract record no.: 2008110000068 Denomination of invention: Fluid loss additive in use for drilling fluid in oil field Granted publication date: 20051228 License type: Exclusive license Record date: 20081027 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.10.15 TO 2013.10.14; CHANGE OF CONTRACT Name of requester: BEIJING AOKAILI SCIENCE DEVELOPMENT CO., LTD. Effective date: 20081027 |
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| 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 |