CN102260487A - Method for preparing fast drilling additive of drilling fluid - Google Patents
Method for preparing fast drilling additive of drilling fluid Download PDFInfo
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- CN102260487A CN102260487A CN2010101859870A CN201010185987A CN102260487A CN 102260487 A CN102260487 A CN 102260487A CN 2010101859870 A CN2010101859870 A CN 2010101859870A CN 201010185987 A CN201010185987 A CN 201010185987A CN 102260487 A CN102260487 A CN 102260487A
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Abstract
The invention relates to a method for preparing a fast drilling additive of drilling fluid, and can greatly increase the speed for drilling a well. The fast drilling additive has good capability of inhibiting the hydration expansion and dispersion of the shale, and is favorable to keep the stabilization of a borehole; the invention has good high-temperature resistance and anti-pollution capability, and can be used in a middle-deep well and a deep well; the fast drilling additive has good compatibleness with a water base drilling fluid system, thereby the rheological property and the filtration rate of the drilling fluid can not be basically influenced; the invention has good effect of protecting an oil gas layer; and has characteristics of no toxicity and no pollution. The on-site application of the fast drilling additive of the drilling fluid shows that the machinery drilling speed rate can be raised by more than 20% so that the drilling time is shorten and the drilling well cost can be saved, thereby, the fast drilling additive has good social benefit and economic benefit.
Description
Technical field
The present invention relates to a kind of drilling fluid additive, be applied to drilling well speed-raising field, adopt new formulation and technology, production meets national standard, cost is low, quality good, eco-friendly drilling fluid quick drilling.
Background technology
When probing during wellhole, make usually circulation of drilling fluid by drill pipe, by drill bit and upwards arrive around the drill pipe endless belt so that drilling cuttings recycle wellhole and make the drill bit cooling.The component that drilling fluid contains provides the density of drilling fluid to approximate or passes the bottomhole wellbore pressure of fluidic pore pressure in wherein the stratum greater than the probing wellhole, and provides and be not more than the pressure that causes the probing wellhole to pass the pressure of stratum breaking wherein.Drilling fluid has also contained the additive of other effect usually.The drilling fluid quick drilling is to improve at present under the drilling speed situation of difficult, the special domestic novel product of developing, and can effectively improve drilling speed is more than 20%.
Deep-well, ultra deep well drilling technique are the requisite gordian techniquies of resource such as exploration and exploitation deep oil gas, and have become the sign of representing the drilling engineering state-of-art.Along with the development of drilling engineering technology, domestic ultra deep well continued to bring out in recent years.This has just proposed new requirement to drilling speed, has also just demonstrated fully the meaning of carrying out the research of drilling fluid quick drilling.Although taken the lead we a lot of years abroad, wherein most of performances are not very desirable, always exist such-and-such deficiency.So be necessary to work out a kind of performance that had both satisfied it as quick drilling, again health, safety, environment do not had the drilling fluid quick drilling of threat.
The drilling fluid quick drilling is by on bit face, drilling cuttings and the electrostatic interaction on the clay particle in the drilling fluid and physics, chemisorption, improved the surface properties of drill bit, drilling tool and drilling cuttings, improve the clean rate of well, reduced bit balling, improved drilling speed; Improve the lubricant effect of drilling fluid, can reduce the frictional resistance and the moment of torsion of drilling fluid effectively, improved drilling speed significantly.
Rig-site utilization shows, it is more than 20% that the drilling fluid quick drilling can effectively improve power auger speed, thereby shortened rig time, saved drilling cost, with drilling period 150 days, 50,000 yuan of calculating of drilling expense every day, at least can shift to an earlier date finishing drilling 30 days, save 1,500,000 yuan of costs, therefore, promote the use of the drilling fluid quick drilling and be very important.
Summary of the invention
The novel product that purpose of the present invention is developed specially at the existing drilling fluid speed-raising existing problem and shortage of agent just, show through rig-site utilization, drilling fluid quick drilling effect is obvious, has good economic benefit and social benefit, has satisfactorily finished re-set target.
The present invention includes drilling fluid quick drilling and prescription thereof, wherein the shared weight ratio of animal oil is 10-40%, the shared weight ratio of oxypropyl trimethyl ammonium chloride is 5-20%, the shared weight ratio of oleic acid is 0.8-5%, the shared weight ratio of ethylene glycol is 1.5-5.5%, the shared weight ratio of clorafin is 8-15%, the shared weight ratio of machinery oil is 10-30%, the shared weight ratio of trolamine is 3-8%, the shared weight ratio of chlorination stearic acid is 0.5-5%, and the drilling fluid quick drilling is a kind of thick liquid.
The present invention includes the production technique of drilling fluid quick drilling, working method is as follows: with reactor animal oil is heated to 180 ℃, adds oleic acid, chlorination stearic acid then, slowly stir, kept after 90 minutes naturally cooling 12 hours; And then add oxypropyl trimethyl ammonium chloride, clorafin, machinery oil, trolamine in proportion, add ethylene glycol at last; Can suitably heat when it is cool adds raw material again, replenishes an amount of water at last.
The present invention includes the using method of drilling fluid quick drilling, can directly add in the circulating mud, add-on can select 0.2%, 0.5%, 1.0%, through performance evaluation, this quick drilling has following characteristics: (1) is little to the plastic viscosity influence, and is bigger to the yield value influence, add and slightly reduced in 0.2% o'clock, be added to 0.5% o'clock YP and reduced to 5Pa, reduced rate is 74%, and the slightly viscosity reduction effect of this treatment agent is described; (2) also have the effect that reduces friction resistance in addition, adding 0.2% o'clock frictional coefficient reduced rate is 28%, illustrates that the oilness to drilling fluid makes moderate progress; (3) filter loss to drilling fluid has no adverse effects, and slightly reduction effect.
The main physical and chemical index such as the following table of the drilling fluid quick drilling that the present invention produces:
| Project | Index | Test result |
| Outward appearance | Thick liquid | Thick liquid |
| Density, g/cm3 | 1.0±0.1 | 1.0 |
| Fluorescence | No fluorescence shows | No fluorescence shows |
| The sticking coefficient reduced rate, % | ≥30 | 66.67 |
| The lubricating coefficient reduced rate, % | ≥50 | 91.06 |
| The relative expansion rate, % | ≤60 | 40 |
| Drilling speed raising rate, % | ≥8 | ≥20 |
The quick drilling examination and test of products of the present invention is all carried out with SAPO quick drilling standard by the Q/SZN006-2004 drilling fluid.
Embodiment
The present invention is further described below in conjunction with embodiment, but is not restriction the present invention.
[embodiment]
250kg animal oil is dropped in the reactor, be heated to 180 ℃, in reactor, add 25kg oleic acid, 30kg chlorination stearic acid, slowly stir, behind the insulation 90min, naturally cooling 12h; In reactor, add 100kg oxypropyl trimethyl ammonium chloride, 100kg clorafin, 150kg machinery oil, 50kg trolamine then, add 25kg ethylene glycol at last; Can suitably heat when it is cool feeds intake again, replenishes an amount of water at last, fully stirs, and promptly gets product SAPO-1 type drilling fluid quick drilling.
Utilize University of Petroleum's jet research centre drilling simulation experimental installation, selected bit diameter 92mm, the pressure of the drill 13.62kN, rotating speed 100rpm, bit pressuredrop 1Mpa, SAPO-1 type drilling fluid proportioning 1: 500, adopt PDC drill bit, triangular polycrystalline diamond diamond head and tooth-wheel bit commonly used respectively, the simulation drilling well is crept on different rocks, obtained and added the actual speed index that creeps in SAPO-1 type drilling fluid front and back, as shown in the table:
After in December, 2002 drilling fluid quick drilling desk research success, through pilot plant test, trial production, perfect production technique, optimized processing parameter, result of use has reached best configuration substantially, successively on ancient 2 wells in lonely north, ancient 204 blocks of car, carry out successful Application in 2003, and obtained good effect, be subjected to insider and expert's consistent favorable comment.
Claims (10)
1. the preparation method of a drilling fluid quick drilling is to comprise animal oil, oxypropyl trimethyl ammonium chloride, oleic acid, ethylene glycol, clorafin, machinery oil, trolamine and the stearic thick liquid of chlorination.
2. drilling fluid quick drilling according to claim 1 is characterized in that: the shared weight ratio of animal oil is 10-40%, preferred 22-31%.
3. drilling fluid quick drilling according to claim 1 is characterized in that: the shared weight ratio of oxypropyl trimethyl ammonium chloride is 5-20%, preferred 8-15%.
4. drilling fluid quick drilling according to claim 1 is characterized in that: the shared weight ratio of oleic acid is 0.8-5%, preferred 1.8-2.5%.
5. drilling fluid quick drilling according to claim 1 is characterized in that: the shared weight ratio of ethylene glycol is 1.5-5.5%, preferred 2.4-3%.
6. drilling fluid quick drilling according to claim 1 is characterized in that: the shared weight ratio of clorafin is 8-15%, preferred 9-12%.
7. drilling fluid quick drilling according to claim 1 is characterized in that: the shared weight ratio of machinery oil is 10-30%, preferred 12-20%.
8. drilling fluid quick drilling according to claim 1 is characterized in that: the shared weight ratio of trolamine is 3-8%, preferred 5-6%.
9. drilling fluid quick drilling according to claim 1 is characterized in that: the shared weight ratio of chlorination stearic acid is 0.5-5%, preferred 2-4%.
10. drilling fluid quick drilling according to claim 1 is characterized in that: in proportion with after the above-mentioned mixing of materials, need to replenish an amount of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101859870A CN102260487A (en) | 2010-05-28 | 2010-05-28 | Method for preparing fast drilling additive of drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101859870A CN102260487A (en) | 2010-05-28 | 2010-05-28 | Method for preparing fast drilling additive of drilling fluid |
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| Publication Number | Publication Date |
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| CN102260487A true CN102260487A (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101859870A Pending CN102260487A (en) | 2010-05-28 | 2010-05-28 | Method for preparing fast drilling additive of drilling fluid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112592700A (en) * | 2020-12-22 | 2021-04-02 | 广州江盐化工有限公司 | Oil-based drilling fluid based on chlorinated paraffin and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101157850A (en) * | 2007-11-20 | 2008-04-09 | 孝英 | Preparation of high temperature resistant lubricant for drilling liquid by animal plant oil |
| CN101486896A (en) * | 2008-12-15 | 2009-07-22 | 中国石油化工股份有限公司 | Drilling fluid lubricating agent |
-
2010
- 2010-05-28 CN CN2010101859870A patent/CN102260487A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101157850A (en) * | 2007-11-20 | 2008-04-09 | 孝英 | Preparation of high temperature resistant lubricant for drilling liquid by animal plant oil |
| CN101486896A (en) * | 2008-12-15 | 2009-07-22 | 中国石油化工股份有限公司 | Drilling fluid lubricating agent |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112592700A (en) * | 2020-12-22 | 2021-04-02 | 广州江盐化工有限公司 | Oil-based drilling fluid based on chlorinated paraffin and preparation method and application thereof |
| CN112592700B (en) * | 2020-12-22 | 2022-04-29 | 广州江盐化工有限公司 | Oil-based drilling fluid based on chlorinated paraffin and preparation method and application thereof |
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| DD01 | Delivery of document by public notice |
Addressee: Yan Zengguo Document name: Notification of Patent Invention Entering into Substantive Examination Stage |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111130 |