CN104017550B - A kind of deep-well salt brine ore deposit probing saturated salt-water drilling fluid and preparation method - Google Patents
A kind of deep-well salt brine ore deposit probing saturated salt-water drilling fluid and preparation method Download PDFInfo
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- CN104017550B CN104017550B CN201410280973.5A CN201410280973A CN104017550B CN 104017550 B CN104017550 B CN 104017550B CN 201410280973 A CN201410280973 A CN 201410280973A CN 104017550 B CN104017550 B CN 104017550B
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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
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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
- C09K8/16—Clay-containing compositions characterised by the inorganic compounds other than clay
Abstract
The invention discloses a kind of deep-well salt brine ore deposit probing saturated salt-water drilling fluid and preparation method, the weight of saturated salt-water drilling fluid is: 100 parts of water；Bentonite 24 parts；Meerschaum 12 parts；Hectorite 0.5 1 parts；14 parts of FT 1 sulfonated gilsonite powder；Inorganic salt recrystallization inhibition agent 0.2 1 parts；The anti-salt copolymer of GTQ 0.4 2 parts；KHm potassium humate 0.3 0.5 parts；Water base defoamer 0.1 0.5 parts；Sodium carbonate 0.2 1 parts；Sodium hydroxide 0.1 0.3 parts；2 10 parts of magnesium chloride；7 15 parts of potassium chloride；20 35 parts of sodium chloride.The present invention can overcome the impact that the performance of drilling fluid is produced by the complex environments such as deep-well salt mine construction middle and high concentration inorganic salt, high temperature, provides technology to ensure for the coring of rock salt stratum；Saturated salt-water drilling fluid has preferable rheological characteristic, it is possible to effectively prevent the corrosion to the salt brine borehole wall and rock core in core drilling, stable performance under the high temperature conditions simultaneously, it is adaptable to deep-well salt brine ore deposit sample boring.
Description
Technical field
The present invention relates to one be applicable to salt brine ore deposit, deep probing reconnoitre field saturated salt-water drilling fluid and preparation
Method.
Background technology
Salt brine ore deposit, underground is a kind of important natural resources, has great importance chemical industry and manufacturing industry.
When creeping into gypsum-salt stratum, drilling fluid needs to face saline bed and pollutes, and salt deposit meets water dissolution, broken and can
The shale hydration of dissolved salt expands, falls the problems such as block even caves in, the most then cause caliper expansion, and down-hole is multiple
Miscellaneous, heavy then cause the generation of lock of tool drilling.Be likely to formation leakage causes drilling fluid density ratio relatively low simultaneously,
The creep of wayward salt brine layer causes Plastic Flow, too low drilling well liquid columnpressure, makes the most not
Stable well more unstability has an accident.Therefore drilling fluid is one of key technology of saline bed drilling well,
Directly influence the success or failure of drillng operation.
In recent years, what salt brine and salt brine ore deposit exploration drilling were constructed is deeply gradually increased, due to geothermal gradient
Existing, bottom hole temperature (BHT) is higher, notable on property of drilling fluid impact.Under hot conditions, drilling fluid is apparent
Easily there is irreversible rising or falling, simultaneously drilling fluid in viscosity, plastic viscosity, yield value and gel strength
Filter loss steeply rise.Additionally, the degraded under the high temperature conditions of organic agent in drilling fluid or friendship
Connection reaction, is easily caused above-mentioned performance acute variation, suspension rock dust and mobility and deteriorates.Ground saturated brine
Drilling fluid can be changed into undersaturation state under the hot conditions of shaft bottom, causes the dissolving of core sample, and reduction takes
Core efficiency.In hot environment, organic agent is in the electrolyte effect of saturated salt-water drilling fluid middle and high concentration
Under, make drilling fluid produce bubble, cause density to decline.The additionally saturated salt-water drilling fluid under hot conditions
In, the corrosiveness of drilling tool is strengthened by electrolyte, can make drill string generation spot corrosion and stress corrosion, causes tight
Accident in weight well.
High temperature resistant drilling fluids has obtained widely studied at present, focuses mostly on and is developing novel high temperature resistance organic process
Agent, while it is true, the research of high temperature resistance saturated salt-water drilling fluid is less, in deep-well salt brine ore deposit is drilled,
Drilling fluid needs not only to the physical chemistry effect that enough opposing high temperature brings, and want can be in the bigger temperature difference simultaneously
In lower holding system, inorganic salt is in saturation, thus ensures that creeping into operation is smoothed out.Therefore deep-well
Salt mine and the salt brine ore deposit probing drilling fluid research and development salt brine ore deposit, deep to carrying out are explored and state
Family's following continent, deep probing and drilling at the sea are significant.
Summary of the invention
It is an object of the invention to reconnoitre drilling operation for the probing in salt brine ore deposit, deep to drilling fluid temperature resistance, anti-
The demand of salt performance, it is provided that one has temperature resistance, anti-salt property and has good rheological, leak-off simultaneously
Energy, the deep-well salt brine ore deposit probing saturated salt-water drilling fluid of inhibition.
It is a further object of the present invention to provide the preparation side of a kind of deep-well salt brine ore deposit probing saturated salt-water drilling fluid
Method.
The deep-well salt brine ore deposit probing saturated salt-water drilling fluid of the present invention is to be made up of following components in parts by weight:
100 parts of water；Bentonite 2-4 part；Meerschaum 1-2 part；Hectorite 0.5-1 part；Sulfonated gilsonite powder
(FT-1) 1-4 part；Inorganic salt recrystallization inhibition agent 0.2-1 part；Anti-salt copolymer (GTQ) 0.4-2
Part；Potassium humate (KHm) 0.3-0.5 part；Water base defoamer 0.1-0.5 part；Sodium carbonate 0.2-1 part；
Sodium hydroxide 0.1-0.3 part；Magnesium chloride 2-10 part；Potassium chloride 7-15 part；Sodium chloride 20-35 part.
Described meerschaum is the hot-liquid type sepiolite i.e. α-type meerschaum of long fibre shape, and structure is silica
Tetrahedron and magnesia octahedron composition.
Described hectorite is lithium magnesium silicate, be a kind of structural formula be (Na, Li)X{(Mg3-X,LiX)3[Si4O10](OH)2}nH2O, by silicon-oxy tetrahedron and magnesium-oxygen octahedra in the Z-axis direction with 2:1
Periodic arrangement formed layer silicate mineral, the Si at tetrahedron center4+Mg with octahedra center2+
By Li at a low price+Replace the compound formed.There is good temperature resistance ability and thickening thixotropy, be used for adjusting
Joint system rheological property at high temperature.
Described inorganic salt recrystallization inhibition agent is mainly used for improving the saturated salt water drilling caused due to the temperature difference
The recrystallization that well liquid occurs in ground and shaft bottom is saltoutd situation.The inorganic salt recrystallization used in the present invention presses down
Preparation is the JYYJ that Jingzhou Jiahua Technology Co., Ltd. produces, and the Hubei Chinese section limited public affairs of new technique share
The NTA that department produces.
Described water base defoamer is the compound organosilicon that dimethicone is polymerized with macromolecular material
Defoamer, dissolubility is good, and defoaming effect is excellent.
Used bentonite, meerschaum, hectorite, sulfonated gilsonite, inorganic salt recrystallization inhibition agent, anti-salt
Copolymer (GTQ), potassium humate (KHm) and water base defoamer are market products.
The preparation method of the deep-well salt brine ore deposit probing saturated salt-water drilling fluid of the present invention, the step of the method is such as
Under:
One, in 100 grams of water, add 0.2-1 gram of sodium carbonate, electric low stirring and dissolving, then add
Enter bentonite 2-4 gram；Meerschaum 1-2 gram；Hectorite 0.5-1 gram, electric high-speed (8000 turns under room temperature
/ minute) stirring is allowed to mixing in 30 minutes and is uniformly dispersed, prehydration 24 hours；
Two, under electric high-speed stirs, then add 1-4 gram of sulfonated gilsonite powder (FT-1), stir 10 points
Clock, adds GTQ anti-salt copolymer 0.4-2 gram, stirs 10 minutes, adds KHm potassium humate 0.3-0.5
Gram, stir 10 minutes；
Three, 2-10 gram of inorganic salt magnesium chloride is added, 20-35 gram of sodium chloride, 10-15 gram of potassium chloride,
Stir 10 minutes；
Four, add inorganic salt recrystallization inhibition agent 0.2-1 gram, stir 10 minutes；
Five, add water base defoamer 0.1-0.5 gram, stir and within 10 minutes, make the probing of deep-well salt brine with full
And drilling fluid.
Material information used by the present invention is shown in Table 1:
Table 1: deep-well salt brine ore deposit probing saturated salt-water drilling fluid base stock catalog
| Title | Code name | Producer |
| Water | H2O | Local tap water |
| Sulfonated gilsonite | FT-1 | Henan Jinma Petroleum Technology Co., Ltd. |
| Meerschaum | Hebei Hong Li meerschaum company limited | |
| Lithium magnesium silicate | Guangzhou Bo Feng Chemical Industry Science Co., Ltd | |
| Potassium humate | KHm | Henan Jinma Petroleum Technology Co., Ltd. |
| Anti-salt copolymer | GTQ | Chengtong bored material factory of Beijing |
| Water base defoamer | Licheng District, Shandong Xin Chu chemical industry business department | |
| Inorganic salt recrystallization inhibition agent | JYYJ | Jingzhou Jiahua Technology Co., Ltd. |
| Inorganic salt recrystallization inhibition agent | NTA | Hubei Hanke Hi-Tech Co., Ltd. |
| Sodium carbonate | Traditional Chinese medicines group chemical reagent Beijing company limited | |
| Sodium hydroxide | Traditional Chinese medicines group chemical reagent Beijing company limited |
The deep-well salt brine ore deposit probing saturated salt-water drilling fluid of the present invention has the advantages that
This drilling fluid has good rheological characteristic, filtration reduction and inhibition under high temperature, high temperature variation；
The salt brine ore deposit probing crept into needing saturated brine to carry out has anti-salt and the suspendability of excellence.
Detailed description of the invention
The deep-well salt brine ore deposit probing saturated salt-water drilling fluid of the present invention is to be made up of following components in parts by weight:
100 parts of water；Bentonite 2-4 part；Meerschaum 1-2 part；Hectorite 0.5-1 part；Sulfonated gilsonite powder
(FT-1) 1-4 part；Inorganic salt recrystallization inhibition agent 0.2-1 part；Anti-salt copolymer (GTQ) 0.4-2
Part；Potassium humate (KHm) 0.3-0.5 part；Water base defoamer 0.1-0.5 part；Sodium carbonate 0.2-1 part；
Sodium hydroxide 0.1-0.3 part；Magnesium chloride 2-10 part；Potassium chloride 7-15 part；Sodium chloride 20-35 part.
Described meerschaum is the hot-liquid type sepiolite i.e. α-type meerschaum of long fibre shape, and structure is silica
Tetrahedron and magnesia octahedron composition.
Described hectorite is lithium magnesium silicate, be a kind of structural formula be (Na, Li)X{(Mg3-X,LiX)3[Si4O10](OH)2}nH2O, by silicon-oxy tetrahedron and magnesium-oxygen octahedra in the Z-axis direction with 2:1
Periodic arrangement formed layer silicate mineral, the Si at tetrahedron center4+Mg with octahedra center2+
By Li at a low price+Replace the compound formed.There is good temperature resistance ability and thickening thixotropy, be used for adjusting
Joint system rheological property at high temperature.
Described inorganic salt recrystallization inhibition agent is mainly used for improving the saturated salt water drilling caused due to the temperature difference
The recrystallization that well liquid occurs in ground and shaft bottom is saltoutd situation.The inorganic salt recrystallization used in the present invention presses down
Preparation is the JYYJ that Jingzhou Jiahua Technology Co., Ltd. produces, and the Hubei Chinese section limited public affairs of new technique share
The NTA that department produces.
Described water base defoamer is the compound organosilicon that dimethicone is polymerized with macromolecular material
Defoamer, dissolubility is good, and defoaming effect is excellent.
Used bentonite, meerschaum, hectorite, sulfonated gilsonite powder, inorganic salt recrystallization inhibition agent, anti-
Salt copolymer (GTQ), potassium humate (KHm) and water base defoamer are market products.
Embodiment 1:
Measure 100ml tap water, add 0.2 gram of sodium carbonate under stirring at low speed and dissolve, then by 2 grams of swellings
Soil is slowly added under 4000 revs/min of stirring at low speed, stirs 10 minutes, then at 4000 revs/min
Add 2 grams of meerschaums under stirring at low speed, after stirring 10 minutes, continuously add 0.5 gram of hectorite, stirring
20 minutes, normal temperature and pressure prehydration 24 hours.Then under electric high-speed stirs, add sulfonated gilsonite powder
(FT-1) 0.5 gram, stir 10 minutes, add anti-salt copolymer GTQ0.4 gram, stir 10 minutes,
Add potassium humate (KHm) 0.3 gram, stir 10 minutes, add sodium hydroxide 0.1 gram, add nothing
2 grams of machine salt magnesium chloride, l30 gram of sodium chloride and 7.0 grams of potassium chloride, stir 10 minutes, adds inorganic salt
Recrystallization inhibition agent 1.0 grams, stirs 10 minutes, adds water base defoamer 0.1 gram, stirs 10 minutes.
The most i.e. obtain deep-well salt brine ore deposit probing saturated salt-water drilling fluid.
Embodiment 2:
Measure 100ml tap water, add 0.4 gram of sodium carbonate under stirring at low speed and dissolve, then by 4 grams of swellings
Soil is slowly added under 4000 revs/min of stirring at low speed, stirs 10 minutes, then at 4000 revs/min
Add 1 gram of meerschaum under stirring at low speed, after stirring 10 minutes, continuously add 0.8 gram of hectorite, stirring
20 minutes, normal temperature and pressure prehydration 24 hours, under electric high-speed stirs, then add sulfonated gilsonite powder
(FT-1) 1.0 grams, stir 10 minutes, add anti-salt copolymer GTQ1.0 gram, stir 10 minutes,
Add potassium humate (KHm) 0.3 gram, stir 10 minutes, add 5.0 grams of inorganic salt magnesium chloride, chlorine
Change 25 grams of sodium and 10 grams of potassium chloride, stir 10 minutes, add inorganic salt recrystallization inhibition agent 0.8 gram,
Stir 10 minutes, add water base defoamer 0.6 gram, stir 10 minutes, obtain the probing of deep-well salt brine ore deposit full
And salt-water drilling fluid.
Embodiment 3:
Measure 100ml tap water, add 1.0 grams of sodium carbonate under stirring at low speed and dissolve, then by 4 grams of swellings
Soil is slowly added under 4000 revs/min of stirring at low speed, stirs 10 minutes, then at 4000 revs/min
Add 0.5 gram of meerschaum under stirring at low speed, after stirring 10 minutes, continuously add 1.0 grams of hectorites, stir
Mix 20 minutes, normal temperature and pressure prehydration 24 hours.Then under electric high-speed stirs, add sulfonated gilsonite
4.0 grams of powder (FT-1), stirs 10 minutes, adds anti-salt copolymer GTQ2.0 gram, stirs 10 minutes,
Add potassium humate (KHm) 0.3 gram, stir 10 minutes, add 5.0 grams of inorganic salt magnesium chloride, chlorine
Change 20 grams of sodium and 15 grams of potassium chloride, stir 10 minutes, add inorganic salt recrystallization inhibition agent 0.5 gram,
Stir 10 minutes, add water base defoamer 0.4 gram, stir 10 minutes, obtain the probing of deep-well salt brine ore deposit full
And salt-water drilling fluid.
Three embodiment gained saturated salt-water drilling fluids are carried out high-temperature circulation test, and aging condition is
180 DEG C, 16 hours, measure aging performance parameter front and back.
Each embodiment saturated salt-water drilling fluid performance test parameter
From components of drilling liquid difference dosage and performance parameter, the present invention under saturated brine system, warp
Crossing high temperature ageing rheological property good, filter loss is low.
Claims (2)
1. a deep-well salt brine ore deposit probing saturated salt-water drilling fluid, is to be made up of following components in parts by weight:
100 parts of water；Bentonite 2-4 part；Meerschaum 1-2 part；Hectorite 0.5-1 part；FT-1 sulfonation
Asphalt powder 1-4 part；Inorganic salt recrystallization inhibition agent 0.2-1 part；GTQ anti-salt copolymer 0.4-2 part；KHm
Potassium humate 0.3-0.5 part；Water base defoamer 0.1-0.5 part；Sodium carbonate 0.2-1 part；Sodium hydroxide 0.1-0.3
Part；Magnesium chloride 2-10 part；Potassium chloride 7-15 part；Sodium chloride 20-35 part；
Described meerschaum is the hot-liquid type sepiolite i.e. α-type meerschaum of long fibre shape；Described lithium soap
Stone is lithium magnesium silicate；Described water base defoamer is dimethicone and answering that macromolecular material is polymerized
Mould assembly organic silicon defoamer.
2. a preparation method for deep-well salt brine ore deposit probing saturated salt-water drilling fluid described in claim 1,
The step of the method is as follows:
One, in 100 grams of water, add 0.2-1 gram of sodium carbonate, electric low stirring and dissolving, then add
Enter bentonite 2-4 gram；Meerschaum 1-2 gram；Hectorite 0.5-1 gram, under room temperature, electric high-speed stirs 30 points
Clock is allowed to mixing and is uniformly dispersed, prehydration 24 hours；
Two, under electric high-speed stirs, then add 1-4 gram of sulfonated gilsonite powder, stir 10 minutes, add
GTQ anti-salt copolymer 0.4-2 gram, stirs 10 minutes, adds KHm potassium humate 0.3-0.5 gram, stirs
Mix 10 minutes；
Three, 2-10 gram of inorganic salt magnesium chloride, 20-35 gram of sodium chloride and 10-15 gram of potassium chloride are added,
Stir 10 minutes；
Four, add inorganic salt recrystallization inhibition agent 0.2-1 gram, stir 10 minutes；
Five, add water base defoamer 0.1-0.5 gram, stir that within 10 minutes, to make the probing of deep-well salt brine ore deposit full
And salt-water drilling fluid.
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| CN115197680A (en) * | 2022-08-19 | 2022-10-18 | 中国石油天然气集团有限公司 | Visual simulation working solution and preparation method thereof |
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