CN101289614B - Impervious fluid loss additive for petroleum well drilling - Google Patents
Impervious fluid loss additive for petroleum well drilling Download PDFInfo
- Publication number
- CN101289614B CN101289614B CN2007100143221A CN200710014322A CN101289614B CN 101289614 B CN101289614 B CN 101289614B CN 2007100143221 A CN2007100143221 A CN 2007100143221A CN 200710014322 A CN200710014322 A CN 200710014322A CN 101289614 B CN101289614 B CN 101289614B
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- CN
- China
- Prior art keywords
- drilling
- filtrate reducer
- fluid loss
- well drilling
- loss additive
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- 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.)
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Abstract
The invention aims to provide non-infiltration filtrate reducer used in a petroleum drilling well in order to realize damage-free well drilling. The filtrate reducer meets the requirements of drilling fluid filtration loss during overbalance well drilling, and solves the problems of circulation loss and oil layer protection when drilling different pressure strata during oil field development. The filtrate reducer consists of inertia material lignocellulose with physical action, active mineral silicon micropowder with chemical action and polymer polyurethane with membrane effect which are mixed and stirred evenly according to a certain proportioning. Compared with other drilling fluid filtrate reducer, the non-infiltration filtrate reducer has the advantages that: the filtrate reducer has higher bearing capacity, and sand bed filtration loss is zero at 3.0MPa.
Description
Technical field
The present invention relates to the used auxiliary agent of a kind of petroleum drilling, specifically, relate to the impervious fluid loss additive of petroleum drilling fluid.
Background technology
In Process of Oil Well Drilling, realize that drilling operation is the final purpose of drilling operation to the harmless of stratum, so just can farthest reduce the injury of drilling fluid to the reservoir original permeability, protect reservoir better, so that reservoir is estimated and developed.Yet traditional boring method is the overbalance drilling well, and drilling fluid is easy to invade reservoir, thereby reservoir is damaged.Still having found a kind of alternative method this field people is exactly under-balanced drilling, this method has obtained significant progress in the past year, also be subjected to people's welcome, yet, the same with anything it weak point is also arranged, under many circumstances because be subjected to the restriction of fund and technology, can not adopt the under-balanced drilling method, we will get back to the overbalance drilling well.Patent retrieval is retrieved on the net in State Intellectual Property Office of the People's Republic of China, retrieval " non-infiltration " speech, retrieve some patents: it is a kind ofly to include a non-per-meate side and a per-meate side and handle the technological process that the membrane separation zone of supplying with air-flow is stopped work that the film of Praxair Technology, Inc application is handled the technological process (patent No. 97121419.0) of stopping work, and this supplys air-flow contains non-infiltration component, is difficult for infiltration, condensable components and easy infiltration component; The cured in place liner of the outer impermeable layer with upset of Ina Acquisition Corporation application and the manufacture method thereof (patent No.: 200480035098.9) be a kind of cured in place liner or the like of resin impregnation of the outer impermeable layer with upset; The retrieval fluid loss agent, patent is many, multipolymer (80A51), sulfonated phenol formaldehyde resin of carboxymethyl starch, Polyanionic Cellulose, acrylate etc. are arranged, the principle that these fluid loss agents reduce wellbore liquid leaching loss all is based on fluid loss agent and clay formation structure, moisture invades in the stratum in the reduction drilling fluid, but in case form the overbalance drilling well, this structure is difficult to keep and is broken, the moisture or even the drilling fluid that just are difficult to control in the drilling fluid invade in the stratum, not only pollute the stratum, even can have influence on the process of drilling well; Retrieval " non-infiltration, fluid loss agent ", not relevant patent.Therefore; the present invention has novelty; can satisfy of the requirement of overbalance drilling process, solve and to bore the problem that does not have a kind of suitable impervious fluid loss additive when meeting the complex pressure series of strata in the oilfield development process, finally reach the purpose of protection oil reservoir drilling fluid filtration.
Summary of the invention
The objective of the invention is for realizing that non-damaging drilling provides a kind of impervious fluid loss additive for petroleum well drilling; satisfy of the requirement of overbalance drilling process to drilling fluid filtration; solve and to bore the problem that does not have a kind of suitable impervious fluid loss additive when meeting the complex pressure series of strata, the final protection that realizes oil reservoir in the oilfield development process.
Impervious fluid loss additive for petroleum well drilling of the present invention, form by the inert material lignocellulose with physical action, the polymer polyurethane that has the active mineral silicon powder of chemical action and have a film effect, by lignocellulose: silicon powder: the mass ratio of urethane is: 10-50: 20-60: 10-40 stirs and gets final product, and product performance index sees Table 1, table 2.
Table 1 physical and chemical index
| Project | Index |
| Outward appearance | The beige powder |
| Moisture, % | ≤10.0 |
| Screen over-size, % | ≤10.0 |
| The pH value | 6.0～8.0 |
Table 2 property of drilling fluid index
Impervious fluid loss additive for petroleum well drilling of the present invention, after tested: 3.0MPa sand-bed filtration amount is 0.
Impervious fluid loss additive for petroleum well drilling of the present invention can utilize the surface chemistry principle to make drilling fluid produce the impermeability compound closure rete that can seal the stratum in solid-liquid interface and prevent that drilling fluid from entering the stratum, the uniqueness of this non-infiltration compound closure rete is its reversibility, under condition of negative pressure, non-infiltration compound closure rete is easy to be stripped from out rock surface, make output unaffected, owing to there is not interior filter cake, so rock permeability recovery value height, and this system is biodegradable and nontoxic, with the effective different permeability formation of shutoff of same fluid composition, increase formation-parting pressure, widen the drilling fluid density scope, microfracture in sealing permeable strata and the shale helps hole stability.
The invention will be further described below by embodiment, but the present invention is not limited only to these examples.
Embodiment 1 (mass ratio)
At first lignocellulose is crushed to 0.074mm, then by lignocellulose: silicon powder: the urethane mass ratio is to stir at 30: 40: 30 promptly to obtain impervious fluid loss additive for petroleum well drilling, product is Powdered, during use the impervious fluid loss additive for petroleum well drilling for preparing is joined in the drilling fluid to get final product.
Embodiment 2 (mass ratio)
At first lignocellulose is crushed to 0.074mm, then by lignocellulose: silicon powder: the urethane mass ratio is to stir at 35: 50: 15 promptly to obtain impervious fluid loss additive for petroleum well drilling, product is Powdered, during use the impervious fluid loss additive for petroleum well drilling for preparing is joined in the drilling fluid to get final product.
Claims (2)
1. impervious fluid loss additive for petroleum well drilling, it is characterized in that: impervious fluid loss additive for petroleum well drilling is made up of the inert material lignocellulose with physical action, the polymer polyurethane that has the active mineral silicon powder of chemical action and have a film effect, and its quality proportioning is: lignocellulose: silicon powder: the mass ratio of urethane is 10-50: 20-60: 10-40.
2. the preparation method of impervious fluid loss additive for petroleum well drilling according to claim 1 is characterized in that: by lignocellulose: silicon powder: the mass ratio of urethane is: 10-50: 20-60: 10-40 stirs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100143221A CN101289614B (en) | 2007-04-16 | 2007-04-16 | Impervious fluid loss additive for petroleum well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100143221A CN101289614B (en) | 2007-04-16 | 2007-04-16 | Impervious fluid loss additive for petroleum well drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101289614A CN101289614A (en) | 2008-10-22 |
| CN101289614B true CN101289614B (en) | 2011-05-04 |
Family
ID=40034062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100143221A Expired - Fee Related CN101289614B (en) | 2007-04-16 | 2007-04-16 | Impervious fluid loss additive for petroleum well drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101289614B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277142A (en) * | 2011-05-10 | 2011-12-14 | 邸勇 | Method for producing filtrate reducer for drilling fluid in oilfields |
| CN108130057A (en) * | 2017-12-30 | 2018-06-08 | 周益铭 | A kind of preparation method of heat resistant type fluid loss additive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4083407A (en) * | 1977-02-07 | 1978-04-11 | The Dow Chemical Company | Spacer composition and method of use |
| WO2006072069A2 (en) * | 2004-12-30 | 2006-07-06 | Sun Drilling Products Corporation | Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications |
-
2007
- 2007-04-16 CN CN2007100143221A patent/CN101289614B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4083407A (en) * | 1977-02-07 | 1978-04-11 | The Dow Chemical Company | Spacer composition and method of use |
| WO2006072069A2 (en) * | 2004-12-30 | 2006-07-06 | Sun Drilling Products Corporation | Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101289614A (en) | 2008-10-22 |
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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 | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA PETROLEUM + CHEMICAL VICTORY OIL ENGINEERING Effective date: 20150325 Owner name: SINOPEC OILFIELD SERVICE CORPORATION Free format text: FORMER OWNER: WELL-DRILLING TECHNOLOGY INST., SHENGLI PETROLEUM ADMINISTRATION, SINOPEC Effective date: 20150325 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 257017 DONGYING, SHANDONG PROVINCE TO: 100029 CHAOYANG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150325 Address after: 100029 Beijing City, Chaoyang District Hui Street No. six twelfth floor Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Patentee after: Drilling Well Technology Institute, Shengli Petroleum Engineering Co., Ltd., SINOPEC Address before: 257017 No. 236, North Road, Dongying District, Shandong, Dongying Patentee before: Well-Drilling Technology Inst., Shengli Petroleum Administration, SINOPEC |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20210416 |