CN100360634C - Borehole stabilized film-forming agent of drilling liquid and production thereof - Google Patents
Borehole stabilized film-forming agent of drilling liquid and production thereof Download PDFInfo
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- CN100360634C CN100360634C CNB2006100444309A CN200610044430A CN100360634C CN 100360634 C CN100360634 C CN 100360634C CN B2006100444309 A CNB2006100444309 A CN B2006100444309A CN 200610044430 A CN200610044430 A CN 200610044430A CN 100360634 C CN100360634 C CN 100360634C
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- forming agent
- phytate
- borehole
- salt
- drilling liquid
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Abstract
The present invention provides a well bore stabilized film-forming agent for drilling fluid and a production method thereof. The film-forming agent comprises the raw materials of the following proportion by weight: 22 to 26 shares of phytate, 30 to 35 shares of acetoxy salt, and 12 to 17 shares of homologues of methylol class compounds, wherein the phytic acid salt is selected from sodium phytate, or potassium phytate, or magnesium phytate; the acetoxy salt is selected from sodium acetate pr ammonium acetate; the homologues of the methylol class compounds are selected from methylol propane or methylol butane; the raw materials are selected from extractive particles of herbaceous plant derivatives. The production method of the film-forming agent comprises that the homologues of methylol class compounds are added to a container and are stirred, and then the temperature is raised to 49 to 58 DEG C; acetoxy salt is added and is stirred for 1 to 2 hours, and then is mixture is laid aside for 5 to 8 hours; the phytic acid salt is added, the temperature is raised to 92 to 100 DEG C, and the mixture is laid aside for 10 to 60 minutes and then is stirred for 1 to 3 hours.
Description
Technical field
The present invention relates to the chemical additive that use in the oil field in exploitation and recovery process, relate in particular to a kind of borehole stabilized film-forming agent of drilling liquid and preparation method thereof.
Background technology
In the petroleum exploration and development process, the solution of oil layer protection and hole stability problem is the important topic of petroleum engineering technology.Oil layer protection and hole stability problem have caused relevant technologies expert's extensive concern.Open hydrocarbon zone to well cementation, perforation, formation testing, well workover, the well stimulation of getting core and being correlated with from brill, such as technologies such as pressure break, acidifying, water fillings, all there is the intrusion of external liquid phase and solid phase, and with low layer in clay generation physical reaction, the reservoir permeability of wellbore is descended, thereby forms the hyposmosis band, increased oil flow resistance, cause the infringement of oil reservoir, reserve-production ratio is reduced, thereby influence the Sustainable development in oil field; In drilling well, use traditional conventional drilling liquid,, also be difficult to realize non-damaging drilling, also can produce certain liquid, solid phase intrusion, thereby reservoir is produced infringement even use clay-free drilling fluid.
Past is in the drilling well in oil field, oil recovery, borehole operation process, be quick, safety, the convenience that improves drilling well, increase the recovery ratio of oil recovery process and the safety and the quality of borehole operation, realization is pollution-free to subsurface formations, countless chemical agents will be added to guarantee the realization of these effects in the oil field in whole a series of process, but polluted underground environment, increased the drilling cost, can not guarantee the safety of whole process.Because the normal leakage that drilling fluid in various degree occurs in drilling process not only can expend rig time, loss mud but also may cause complicated down-hole situations such as bit freezing, blowout, well slough, even great financial loss such as cause that well is scrapped; Leakage in oil producing operation also seriously influences the oil well operation and payzone is produced serious pollution, brings great loss to the oil field exploitation.
Summary of the invention
One of purpose of the present invention provides a kind of penetration number and the stratum that can improve the stratum and suppresses ability and oil well recovery ratio, helps protecting oil reservoir, prevents the borehole stabilized film-forming agent of drilling liquid of oil layer pollution; Two of purpose provides the preparation method of this membrane-forming agent.
One of purpose of the present invention can realize by following technical measures:
This borehole stabilized film-forming agent of drilling liquid is made up of following raw materials in weight portion:
Phytate 22～26 acetoxyl salt 30～35
The homologue 12-17 of hydroxymethyl quasi-compound.
One of purpose of the present invention also can realize by following technical measures:
Described phytate is selected from sodium phytate, POTASSIUM PHYTATE or phytic acid magnesium; Described acetoxyl salt is selected from sodium acetate or amine acetate; The homologue of described hydroxymethyl quasi-compound is selected from hydroxymethyl-propane or methylol butane; Described raw material is selected from the extract particles in the careless section class botanical derivative.
Two of purpose of the present invention can realize by following technical measures:
In container, add the homologue of the hydroxymethyl quasi-compound described in one of purpose earlier, stir, be warming up to 49-58 ℃; Add acetoxyl salt then, stirred 1～2 hour, left standstill 5～8 hours; Add phytate again, be warming up to 92-100 ℃, left standstill 10～60 minutes, stirred 1～3 hour.
Extract particles in the described careless section class botanical derivative normally adopts careless section class plant distillation extraction, and extract is continued distillation 6 hours under the temperature of 105 degree, 8 pressure, makes extract particles.The distillation extraction mode is divided air distillation and underpressure distillation, is excellent in the underpressure distillation mode.
Raw material of the present invention is city's pin product in the market, best with the extract particles effect in the careless section class botanical derivative, described phytate is selected from sodium phytate, POTASSIUM PHYTATE or phytic acid magnesium, acetoxyl salt is selected from sodium acetate or amine acetate, and the homologue of hydroxymethyl quasi-compound is selected from hydroxymethyl-propane or the methylol butane is a preferred plan.
Borehole stabilized film-forming agent of drilling liquid of the present invention is the beige powder, and it is neutral that pH value is.Adding drilling fluid behind the borehole stabilized film-forming agent of drilling liquid of the present invention and completion fluid system is zero or approaches zero the infringement of hydrocarbon zone; this also is the petroleum geologist; the new drilling liquid technology system that drilling engineering and drilling fluid expert dream of; and succeeding in developing of borehole stabilized film-forming agent of drilling liquid of the present invention is the major technological breakthrough of drilling liquid technology aspect; to downhole safety (leakage; down-hole accident such as pressure differential sticking and slump in) situation; reservoir protection and petroleum engineering technology etc. are brought major transformation; meet the new requirement of modern oil field development, have very wide application prospect.The action principle of this membrane-forming agent is the formation micella that concentrates on the surface of rock of borehole; rely on polymer micelle or micelle interfacial adsorption and deformability thereof; energy self-adaptation shutoff rock surface pore throat in a big way; rock surface at the borehole wall forms fine and close nothing infiltration shutoff film; energy is shutoff different permeability stratum and microfracture mud shale stratum effectively; form the protection film layer in the periphery of the borehole wall; drilling fluid and filtrate and stratum are isolated fully; can not be penetrated in the stratum; thereby realize boring completion near zero infringement oil reservoir; preferably resolve in the drilling process infringement to oil reservoir; effectively solve the oil layer protection problem, solved some the technical difficult problems in the conventional drilling simultaneously.
Borehole stabilized film-forming agent of drilling liquid of the present invention two-phase or heterogeneous between utilize the selectivity barrier action of film to carry out separation and concentration (withstand voltage 1.3 MPas), form positive press mold at enrichment region, in case and malleation when being zero, the film of formation then dissolves disappearance.Product application of the present invention can replace several oilfield treatments agent in the oil field, can improve the oil well recovery ratio, makes every mouthful of oil well improve output 30～40%; Can improve the stratum and suppress ability, make rig time shorten 30%; Can protect oil reservoir, penetration number reaches more than 98%; Can improve the penetration number on stratum, penetration number is returned to more than 98%.And green drilling well truly, green oil recovery, green operation have been realized.Adopt borehole stabilized film-forming agent of drilling liquid of the present invention, can make full well section ne-leakage, not only guarantee the normal progress of engineering, and protected hydrocarbon zone, thereby guaranteed oil field fast and stable development, the oil field development is had deep meaning.
Preparation method of the present invention is simple, and cost is low, and raw material is easy to get, and handled easily does not have any pollution.
Embodiment:
Embodiment 1:
In container, add 12 kilograms of hydroxymethyl-propanes earlier, stir, be warming up to 58 ℃; Add 35 kilograms of sodium acetates then, stirred 1 hour, left standstill 8 hours; Add 22 kilograms of phytic acid magnesiums again, be warming up to 92 ℃, left standstill 60 minutes, stirred 1 hour.
Embodiment 2:
In container, add 12 kilograms earlier by the hydroxymethyl-propane particle that extracts in the careless section class botanical derivative, stir, be warming up to 49 ℃; Add 30 kilograms then by the sodium acetate particle that extracts in the careless section class botanical derivative, stirred 2 hours, left standstill 6 hours; Add 26 kilograms again by the phytic acid magnesium particle that extracts in the careless section class botanical derivative, be warming up to 100 ℃, left standstill 10 minutes, stirred 3 hours.
Embodiment 3:
In container, add 17 kilograms of hydroxymethyl-propanes earlier, stir, be warming up to 49 ℃; Add 35 kilograms of sodium acetates then, stirred 2 hours, left standstill 6 hours; Add 22 kilograms of phytic acid magnesiums again, be warming up to 100 ℃, left standstill 10 minutes, stirred 3 hours.
Embodiment 4:
In container, add 17 kilograms earlier by the hydroxymethyl-propane particle that extracts in the careless section class botanical derivative, stir, be warming up to 68 ℃; Add 30 kilograms then by the sodium acetate particle that extracts in the careless section class botanical derivative, stirred 1 hour, left standstill 8 hours; Add 26 kilograms again by the phytic acid magnesium particle that extracts in the careless section class botanical derivative, be warming up to 92 ℃, left standstill 60 minutes, stirred 1 hour.
Embodiment 5:
Replace hydroxymethyl-propane with the methylol butane, other are respectively with embodiment 1,2,3 or 4.
Embodiment 6:
Replace sodium acetate with amine acetate, other are respectively with embodiment 1,2,3,4 or 5.
Embodiment 7:
Replace phytic acid magnesium with sodium phytate, other are respectively with embodiment 1,2,3,4,5 or 6.
Embodiment 8:
Replace phytic acid magnesium with POTASSIUM PHYTATE, other are respectively with embodiment 1,2,3,4,5 or 6.
Claims (5)
1, a kind of borehole stabilized film-forming agent of drilling liquid is characterized in that being made up of following raw materials in weight portion:
Phytate 22～26 acetoxyl salt 30～35
Hydroxymethyl-propane or methylol butane 12-17.
2, a kind of borehole stabilized film-forming agent of drilling liquid according to claim 1 is characterized in that described phytate is selected from sodium phytate, POTASSIUM PHYTATE or phytic acid magnesium.
3, a kind of borehole stabilized film-forming agent of drilling liquid according to claim 1 is characterized in that described acetoxyl salt is selected from sodium acetate or amine acetate.
4, a kind of borehole stabilized film-forming agent of drilling liquid according to claim 1 is characterized in that described raw material is selected from the extract particles in the careless section class botanical derivative.
5, a kind of method of using the feedstock production borehole stabilized film-forming agent of drilling liquid of claim 1 is characterized in that:
In container, add hydroxymethyl-propane or methylol butane earlier, stir, be warming up to 49-58 ℃; Add acetoxyl salt then, stirred 1～2 hour, left standstill 5～8 hours; Add phytate again, be warming up to 92-100 ℃, left standstill 10～60 minutes, stirred 1～3 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100444309A CN100360634C (en) | 2006-03-08 | 2006-03-08 | Borehole stabilized film-forming agent of drilling liquid and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100444309A CN100360634C (en) | 2006-03-08 | 2006-03-08 | Borehole stabilized film-forming agent of drilling liquid and production thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1818006A CN1818006A (en) | 2006-08-16 |
| CN100360634C true CN100360634C (en) | 2008-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100444309A Expired - Fee Related CN100360634C (en) | 2006-03-08 | 2006-03-08 | Borehole stabilized film-forming agent of drilling liquid and production thereof |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105602540B (en) * | 2016-01-29 | 2018-06-01 | 中国石油天然气股份有限公司 | A kind of compact oil reservoir under-injected well administering method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1400277A (en) * | 2002-08-27 | 2003-03-05 | 辽河石油勘探局工程技术研究院 | Compound organic salt-water emulsion drilling fluid |
| US20040060702A1 (en) * | 2000-11-20 | 2004-04-01 | Kotlar Hans Kristian | Well treatment |
| CN1568394A (en) * | 2001-09-28 | 2005-01-19 | 斯蒂芬·阿特金森 | Method for the recovery of hydrocarbons from hydrates |
-
2006
- 2006-03-08 CN CNB2006100444309A patent/CN100360634C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040060702A1 (en) * | 2000-11-20 | 2004-04-01 | Kotlar Hans Kristian | Well treatment |
| CN1568394A (en) * | 2001-09-28 | 2005-01-19 | 斯蒂芬·阿特金森 | Method for the recovery of hydrocarbons from hydrates |
| CN1400277A (en) * | 2002-08-27 | 2003-03-05 | 辽河石油勘探局工程技术研究院 | Compound organic salt-water emulsion drilling fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1818006A (en) | 2006-08-16 |
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Granted publication date: 20080109 |