CN106543991A - A kind of water base high density temperature resistance antipollution drilling fluid of deep-well saturated salt - Google Patents
A kind of water base high density temperature resistance antipollution drilling fluid of deep-well saturated salt Download PDFInfo
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- CN106543991A CN106543991A CN201610967914.4A CN201610967914A CN106543991A CN 106543991 A CN106543991 A CN 106543991A CN 201610967914 A CN201610967914 A CN 201610967914A CN 106543991 A CN106543991 A CN 106543991A
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- drilling fluid
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
- C09K8/24—Polymers
Abstract
The present invention relates to a kind of water base high density temperature resistance antipollution drilling fluid of deep-well saturated salt, it has good key property, effectively prevents cave-in.Its technical scheme is to prepare the raw materials used component of the drilling fluid and its content is, mass unit for gram：Tap water 900 1000；Drilling fluid bentonite 30 50；Na2CO3 1.5‑2.5；Drilling fluid viscosity reduction fluid loss additive SLSP 36；Drilling fluid salt tolerant mutant SCSP 25；Viscosity depressant for drilling fluid PFC 0.5 1.5；Drilling fluid anti-sloughing agent HD 2 10 20；Drilling fluid anti-sloughing agent OSHMK 5 10；Lubricant graphite powder 15 25；Finally added water the alkali liquor for being configured to 40% with NaOH, and regulation system pH is 9.0.Stirring 30min after according to mass ratio be 0.0530 ~ 0.0630mm blanc fixes:0.0450 ~ 0.0530mm blanc fixe=3:Drilling fluid system is exacerbated to 2.50g/cm by 2 ratio3, a kind of water base high density temperature resistance antipollution drilling fluid of this deep-well saturated salt is obtained.
Description
Technical field
The present invention relates to a kind of water base high density temperature resistance antipollution drilling fluid of deep-well saturated salt, it is particularly suitable for deep-well, super
The drilling of deep-well.
Background technology
The probing of deep-well and ultradeep well at present has at home and abroad been counted as an importance of the drilling industry development from now on.
As well is deeper, technical difficulty is more, therefore, countries in the world are all using drilling depth and speed as the important of drilling technology
Mark.It was verified that deep-well, ultra-deep well drilling liquid quality are to deep-well, the success or failure of ultradeep well, drilling speed, Hydrocarbon Resource of The Deep Formation exploration
There is extremely important meaning with drilling cost.From the point of view of current deep-well, ultra-deep well drilling liquid present Research, conventional deep-well,
Ultra-deep well drilling liquid has water base and two big class of oil base.Oil base drilling fluid performance is affected less by high temperature, to preventing differential sticking etc.
The advantage that down-hole complexity has water-base drilling fluid incomparable.But which is polluted to reservoir causes reservoir permeability to drop
It is low so as to cause oil gas well production decline, its performance be stressed impact it is larger the problems such as also can not be ignored.Although China's once success
Used oil base drilling fluid, but at present still based on water-base drilling fluid.
The pluses and minuses water-base drilling fluid advantage for comparing oil base drilling fluid has：1. environmental protection；2. drilling speed is very fast；3. temperature convection becomes
Property affect it is less；4. cost is relatively low；5. meet leakage to be easily processed, shortcoming has：1. borehole wall stability is poor；2. heat stability phase
To poor, it is easy to high temperature gel；3. resistance tocrocking is poor, safeguards that process workload is big；4. lubricate anti-sticking scarce capacity；5. dehydration
Wave making machine is difficult coordination etc. with the contradiction of rheological characteristic.Therefore, it is drilling to develop a kind of functional and stable water-base drilling fluid
The key technology of deep-well, ultradeep well, and the difficult point place of deep-well, ultradeep well is crept into both at home and abroad.
The content of the invention
The purpose of the present invention is：Rheological characteristic and mistake when use at present water-base drilling fluid drilling deep-well, ultradeep well to overcome
The contradiction of water wave making machine, makes drilling fluid that its filter loss is controlled while having good rheological, provides a kind of deep-well for this spy and satisfies
With the water base high density temperature resistance antipollution drilling fluid of salt.
In order to achieve the above object, the present invention is employed the following technical solutions：A kind of water base high density temperature resistance of deep-well saturated salt
Antipollution water-base drilling fluid, is characterized in that preparing the raw materials used component of the drilling fluid and content is, wherein mass unit for gram：
It is 9.0 with the NaOH solution regulation system pH value that mass percentage concentration is 40%；With 0.0630mm, 0.0530mm,
The screen cloth of 0.0450mm sifts out the blanc fixe of 0.0530 ~ 0.0630mm, 0.0450 ~ 0.0530mm, and according to mass ratio is
0.0530 ~ 0.0630mm blanc fixes：0.0450 ~ 0.0530mm blanc fixe=3:Drilling fluid system is exacerbated to by 2 ratio
2.50g/cm3。
A kind of preparation method of the water base high density temperature resistance antipollution drilling fluid of deep-well saturated salt of the present invention is：
Water temperature is risen to 70 DEG C by the tap water for first measuring 1000 grams, and 30-50 gram is added under low speed 500r/min electric stirrings
Drilling fluid bentonite, stirs 20min, adds 1.5-2.5 gram of Na2CO330min is stirred for, prehydration 24h under normal temperature and pressure；Again
Under high speed 8000r/min electric stirring, 3-6 gram of drilling fluid viscosity reduction fluid loss additive SLSP is added to stir 15min, in low speed
Add 2-5 gram of drilling fluid salt tolerant mutant SCSP to stir 15min under 500r/min electric stirrings, add 0.5-1.5 gram of brill
Well liquid stirs 10min with thinner PFC, adds 10-20 gram of drilling fluid anti-sloughing agent HD-2 to stir 5min, adds 5-10 gram of drilling well
Liquid stirs 5min with anti-sloughing agent OSHMK；It is subsequently adding 15-25 gram of lubricant graphite powder stirring 10min；Finally added water with NaOH and matched somebody with somebody
40% alkali liquor is made, regulation system pH is 9.0.Stirring 30min after according to mass ratio be 0.0530 ~ 0.0630mm blanc fixes：
0.0450 ~ 0.0530mm blanc fixe=3:Drilling fluid system is exacerbated to 2.50g/cm by 2 ratio3Stirring 4 hours, is obtained this
A kind of water base high density temperature resistance antipollution drilling fluid of deep-well saturated salt.
Drilling fluid bentonite, Na used by above-mentioned preparation method2CO3, drilling fluid viscosity reduction fluid loss additive SLSP, drilling fluid
With salt tolerant mutant SCSP, viscosity depressant for drilling fluid PFC, drilling fluid anti-sloughing agent HD-2, drilling fluid anti-sloughing agent OSHMK,
Lubricant graphite powder, barite are on market sells product, and strictly by industry standard or enterprise's mark inspection when purchasing, eligible is
Can use.1 is shown in Table specifically.
The water base high density temperature resistance antipollution drilling fluid base stock detail list of 1 deep-well saturated salt of table
| The name of an article | Code name or chemistry Formula | Main component | Manufacturer | Remarks |
| Water | H2O | Local Running-water Company | ||
| Drilling fluid is filtered with viscosity reduction drop Lose agent | SLSP | Lignosulfonate sulphur methyl phenolic aldehyde Resin | Yan Bian Longjing Cities Organic Chemical Plant | http://yanbian015482.11467.com/ |
| Drilling fluid is lost with salt resistance drop Water preparation | SCSP | Sulfonated lignite phenolic resin copolymerization Thing | Chongqing synthesizes chemical plant | http://www.11467.com/cqshapingba/co/1080.htm |
| Viscosity depressant for drilling fluid | PFC | Polysulfonate humic acidss | Chongqing synthesizes chemical plant | http://www.11467.com/cqshapingba/co/1080.htm |
| Drilling fluid anti-sloughing agent | HD-2 | Organic silicone potassium humate | Qin Zhou cities Fine Chemical Works | http://052386921054.locoso.com/ |
| Drilling fluid anti-sloughing agent | OSHMK | Organic silicone potassium humate | Qin Zhou cities Fine Chemical Works | http://052386921054.locoso.com/ |
| Drilling fluid bentonite | Montmorillonite | Xinjiang Zhong Feixiazi streets bentonite Limited Liability is public Department | http://www.sinoma-xjbentonite.com/list/6_ 1.html | |
| Sodium carbonate | Na2CO3 | Analysis is pure | ||
| Sodium hydroxide | NaOH | Analysis is pure | ||
| Lubricant | Graphite powder | Graphite | Nantong Yangzi Carbon Co., Ltd. | https://shop1439431487860.1688.com/ |
| Barite | BaSO4 | Lingshou County An Hong mineral products processings factory | http://detail.1688.com/offer/ 45753518853.htmlspm=0.0.0.0.6b49ov |
The water base high density temperature resistance antipollution drilling fluid of deep-well saturated salt and current used high density drilling fluid that the present invention is provided
System is compared and is had the advantages that：1. to compare oil base drilling fluid environmental pollution little for this drilling fluid；2. there is stronger suppression
Shut-off capacity；3. caving pressure can effectively be reduced；4. increase in proportion to have drilling fluid system with the blanc fixe of different meshes
There is good rheological characteristic etc..
Specific embodiment：
With reference to instantiation, the present invention is further illustrated
Example 1：A kind of compound method of the water base high density temperature resistance antipollution drilling fluid of deep-well saturated salt.
Water temperature is risen to 70 DEG C by the tap water for first measuring 1000 grams, under low speed 500r/min electric stirrings adds 30-50
Gram drilling fluid bentonite, stir 20min, add 1.5 grams of Na2CO330min is stirred for, prehydration 24h under normal temperature and pressure；Again
Under high speed 8000r/min electric stirring, 6 grams of drilling fluids viscosity reduction fluid loss additive SLSP is added to stir 15min, in low speed 500r/
Add 2 grams of drilling fluids salt tolerant mutant SCSP to stir 15min under min electric stirrings, add 0.5 gram of viscosity depressant for drilling fluid
PFC stirs 10min, adds 10 grams of drilling fluids anti-sloughing agent HD-2 to stir 5min, adds 5 grams of drilling fluid anti-sloughing agent OSHMK to stir
Mix 5min；It is subsequently adding 15 grams of lubricant graphite powder stirring 10min；Finally added water the alkali liquor for being configured to 40% with NaOH, adjusts body
It is that pH is 9.0.Stirring 30min after according to mass ratio be 0.0530 ~ 0.0630mm blanc fixes：0.0450 ~ 0.0530mm weights are brilliant
Stone powder=3:Drilling fluid system is exacerbated to 2.50g/cm by 2 ratio3Stirring 4 hours, is obtained a kind of this deep-well saturated salt water base
High density temperature resistance antipollution drilling fluid.
Example 2：Rolling rate of recovery measure has been carried out to drilling fluid system of the present invention using XGRL-2 types roller heating stove.
The water base high density temperature resistance antipollution drilling fluid rolling rate of recovery experimental result of 2 deep-well saturated salts of table
| Drilling fluid composition | Experiment condition | Reclaim quality（g） | The response rate（%） |
| Clear water+50g red beds soil | 105℃/16h | 5.33 | 10.66 |
| Drilling fluid system+50g red beds soil | 105℃/16h | 48.46 | 96.92 |
Note：1）Red beds soil is Sichuan red beds soil landwaste, and shale is appeared and appeared for long 7 shale, is 6～10 mesh, and the response rate was
The 40 mesh response rate；2）In table, result is 2 experimental data averages.
The water base high density temperature resistance antipollution drilling fluid linear expansion experimental result of 3 deep-well saturated salts of table
Note：1）Core is drilling fluid bentonite（With puddled soil）It is compressing；2）Filtrate is extrusion after system heat 105 DEG C/16h of rolling
Filtrate；3）In table, result is 2 experimental data averages.
By table 2, the rolling rate of recovery of the water base high density temperature resistance antipollution drilling fluid of the deep-well saturated salt of table 3 and linear expansion
Rate experiment understands that rolling rate of recovery reaches more than 96%, 16h linear expansion rates and only has 21.26% to have preferably suppression aquation point
Dissipate and dilatancy.
Example 3：Rolled using XGRL-2 type roller heating stoves Continuous Heat, test the water base high density temperature resistance of the deep-well saturated salt
Antipollution drilling fluid key property and heat stability.
The water base high density temperature resistance antipollution drilling fluid key property of 4 deep-well saturated salts of table and Evaluation of Thermal Stability
The thermal stability results of table 4 understand that system has good key property, glue, cut the increasing with rolling time with filter loss
Plus change little, with good heat stability.
Claims (2)
1. a kind of water base high density temperature resistance antipollution drilling fluid of deep-well saturated salt, is characterized in that：Prepare the drilling fluid raw materials used
Component and content be, its mass unit for gram：
It is 9.0 with the NaOH solution regulation system pH value that mass percentage concentration is 40%；By blanc fixe 0.0630mm,
The screen cloth of 0.0530mm, 0.0450mm sifts out the blanc fixe of 0.0530 ~ 0.0630mm, 0.0450 ~ 0.0530mm, and according to matter
Amount is than being 0.0530 ~ 0.0630mm blanc fixes：0.0450 ~ 0.0530mm blanc fixe=3:2 ratio is by drilling fluid system
It is exacerbated to 2.50g/cm3。
2. water temperature is risen to 70 DEG C by the tap water for first measuring 1000 grams, under low speed 500r/min electric stirrings adds 30-50 gram
Drilling fluid bentonite, stir 20min, add 1.5-2.5 gram of Na2CO330min is stirred for, prehydration 24h under normal temperature and pressure；
Under high speed 8000r/min electric stirring 3-6 gram of drilling fluid viscosity reduction fluid loss additive SLSP is added to stir 15min again, in low speed
Add 2-5 gram of drilling fluid salt tolerant mutant SCSP to stir 15min under 500r/min electric stirrings, add 0.5-1.5 gram of brill
Well liquid stirs 10min with thinner PFC, adds 10-20 gram of drilling fluid anti-sloughing agent HD-2 to stir 5min, adds 5-10 gram of drilling well
Liquid stirs 5min with anti-sloughing agent OSHMK；It is subsequently adding 15-25 gram of lubricant graphite powder stirring 10min；Finally added water with NaOH and matched somebody with somebody
40% alkali liquor is made, regulation system pH is 9.0；Stirring 30min after according to mass ratio be 0.0530 ~ 0.0630mm blanc fixes：
0.0450 ~ 0.0530mm blanc fixe=3:Drilling fluid system is exacerbated to 2.50g/cm by 2 ratio3Stirring 4 hours, is obtained this
A kind of water base high density temperature resistance antipollution drilling fluid of deep-well saturated salt.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105733527A (en) * | 2016-04-20 | 2016-07-06 | 西南石油大学 | High-density drilling fluid densified with hausmannite powder |
| CN107118750A (en) * | 2017-06-20 | 2017-09-01 | 西南石油大学 | A kind of deep-well anti-high temperature anti-saturation salt water high-density water-based drilling fluid and preparation method thereof |
| CN107541196A (en) * | 2017-08-25 | 2018-01-05 | 克拉玛依市创拓有限责任公司 | Environment-friendly type saturated brine high-density water-based drilling fluid and preparation method thereof |
| CN109652036A (en) * | 2019-01-19 | 2019-04-19 | 西南石油大学 | A kind of high-temperature high-density high salinity water-base drilling fluid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105733527A (en) * | 2016-04-20 | 2016-07-06 | 西南石油大学 | High-density drilling fluid densified with hausmannite powder |
| CN107118750A (en) * | 2017-06-20 | 2017-09-01 | 西南石油大学 | A kind of deep-well anti-high temperature anti-saturation salt water high-density water-based drilling fluid and preparation method thereof |
| CN107541196A (en) * | 2017-08-25 | 2018-01-05 | 克拉玛依市创拓有限责任公司 | Environment-friendly type saturated brine high-density water-based drilling fluid and preparation method thereof |
| CN109652036A (en) * | 2019-01-19 | 2019-04-19 | 西南石油大学 | A kind of high-temperature high-density high salinity water-base drilling fluid |
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Application publication date: 20170329 |