CN104327811B - Environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid and preparation method and application - Google Patents
Environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid and preparation method and application Download PDFInfo
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- CN104327811B CN104327811B CN201410478613.6A CN201410478613A CN104327811B CN 104327811 B CN104327811 B CN 104327811B CN 201410478613 A CN201410478613 A CN 201410478613A CN 104327811 B CN104327811 B CN 104327811B
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Abstract
The invention provides a kind of environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid and preparation method and application.In parts by weight, the environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, including following component：The parts by weight of gas liquefaction 80 90, the parts by weight of organoclay DRGEL2 3, the parts by weight of primary emulsion DREM 13 4, the auxiliary parts by weight of emulsifying agent DRCO 12 5, the parts by weight of fluid loss additive DF012 5, concentration 20wt% CaCl2The parts by weight of the aqueous solution 10 20, the parts by weight of calcium oxide 24 and barite.The drilling fluid of the present invention can meet land with marine environmentally sensitive areas deep ＆ ultra-deep well to drilling fluid high temperature resistance and environment amenable requirement while the custom requirements of drilling fluid are met.
Description
Technical field
The present invention relates to a kind of environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid and preparation method and application, belong to stone
Oily production technique field.
Background technology
With the continuous reduction of conventional gas and oil resource, petroleum exploration and development is gradually to deeper stratum and farther ocean
Drilling, therefore, oil well well depth is also more and more deeper.Deep-well, ultradeep well probing in, due to the presence of geothermal gradient, well is got over
Temperature in deep well will become higher.Ultradeep well of China's western oil field more than 7000m and east oilfields are more than 5000m's
Deep-well bottom hole temperature (BHT) is just likely to more than 200 DEG C.Under the high temperature conditions, the various components in water-base drilling fluid can occur degraded,
The changes such as fermentation, thickening, failure, so that drastic change occurs for property of drilling fluid, will cause drillng operation not enter normally when serious
OK.Oil base drilling fluid system has that heat endurance is good, and for temperature resistance up to more than 230 DEG C, density reaches 2.2g/cm3More than；In addition, oil base
Drilling fluid is for boring bad ground, in terms of the strong stratum of water sensitivity, Temperature Deep high pressure formation, huge thick saline bed, Ke Yi great
Width reduces underground complex accident rate, improves mechanical rate of penetration.But because oil base drilling fluid has pollution problem, on land
The application of environmentally sensitive areas and marine bad ground and promoting the use of is restricted.
As a kind of New well drilling liquid system with environmental protection characteristic, it both there is gas liquefaction synthetic base drilling fluid oil base to bore
The performance characteristics of well liquid, but it is environmentally friendly, pollution-free.With oil base (oil based on diesel oil and less toxic mineral oil) drilling well liquid phase
Have that kinematic viscosity is low, drilling speed is fast, to the advantage such as more environment-friendly than, gas liquefaction synthetic base drilling fluid, and there is oil base
The features such as wellbore stability of drilling fluid, lubricity are good and protect reservoir.
The content of the invention
In view of the defects of above-mentioned prior art is present, the purpose of the present invention is a kind of environment-friendly type high temperature resistance gas oil synthetic base
Drilling fluid and preparation method and application, land and marine ring can be met while the custom requirements of drilling fluid are met
Border sensitizing range deep ＆ ultra-deep well is to drilling fluid high temperature resistance and environment amenable requirement.
The purpose of the present invention is achieved by the following technical programs：
A kind of environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, in parts by weight, including following component：
Gas liquefaction 80-90 parts by weight, organoclay 2-3 parts by weight, primary emulsion 3-4 parts by weight, auxiliary emulsifying agent 2-5 weight
Part, fluid loss additive 2-5 parts by weight, concentration 20wt% CaCl2Aqueous solution 10-20 parts by weight, calcium oxide 2-4 parts by weight and weight are brilliant
Stone.
In above-mentioned environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, the gas liquefaction is to be a kind of without aromatic hydrocarbon, nothing
Fluorescence, biodegradable environmentally friendly synthetic base oil, a nonpolar continuous phase is used as in drilling fluid system, its
Main function is the polar reaction for preventing drilling fluid from occurring with ground interlayer；Preferably, the gas liquefaction is Shell Co. Ltd's production
Saraline185V gas liquefactions.
In above-mentioned environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, the CaCl of the concentration 20wt%2The aqueous solution is
Salt aqueous phase, for adjusting the activity of salt solution, make the salt solution contained by drilling fluid equal with the activity of stratum water, prevent the water in stratum
Water into drilling fluid infiltration or drilling fluid permeates to stratum.
In above-mentioned environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, the organoclay is oleophylic into colloid, its temperature resistance
Up to 220 DEG C, main function plays part filtrate reducing to increase the viscous shear force of drilling fluid system；Preferably, it is described organic
Soil includes following component：
According to specific embodiment, above-mentioned organoclay, in parts by weight, including the following raw material：Purify sodium bentonite
20 parts by weight, the parts by weight of hexadecyltrimethylammonium chloride 3, double parts by weight of OTAC 6, ZLSH-600 work(
The parts by weight of macromolecular 2, the parts by weight of water 100 can be changed.
Above-mentioned organoclay is prepared by following method：
First insert layer reacts：
Purification sodium bentonite and water are put into stainless steel kneader, in the case where being stirred continuously, add cetyl front three
Ammonium chloride and double OTACs, are heated to 90 DEG C, react 2 hours, obtain organoclay feed liquid；
Organoclay feed liquid is injected into press filtration in plate and frame type filter-press, removes moisture removal, obtains first insert layer material；
Secondary intercalation reacts：
First insert layer material and ZLSH-600 functionalization macromoleculars room temperature are mediated into reaction 30 minutes, obtain secondary-plug layered material；
Post-processing：
Secondary-plug layered material is put into drying box, dried 5 hours at 105 DEG C, is down to room temperature, crushes, cross 200 mesh sieves, obtain
Organoclay.
In above-mentioned environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, it is preferred that the organoclay collects for CNPC
The DRGEL type organoclays of drilling engineering Institute for Research and Technology of group production, meeting drilling fluid organoclay SY/T6615-2005 technologies will
Ask, its component is the organoclay component in above-mentioned specific embodiment.
In above-mentioned environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, it is preferred that the primary emulsion be organic acid with
Organic amine carries out the arcuation combed long-chain molecule emulsifying agent of amidation process preparation；Its temperature resistance, can be on oil-water interfaces up to 220 DEG C
The composite membrane of high intensity is formed, so as to ensure that emulsion stability is good at high temperature；It is furthermore preferred that during the primary emulsion is
The DREM-1 type emulsifying agents of Petroleum Group drilling engineering Institute for Research and Technology of state production, meet drilling fluid and are commented with high temperature resistance primary emulsion
The quasi- Q/SY ZJG0031-2012 of price card.
In above-mentioned environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, it is preferred that the auxiliary emulsifying agent be organic acid with
Organic amine carries out the chainlet molecule emulsifying agent with hydrophile function group of amidation process preparation；Its temperature resistance is up to 220 DEG C, with main breast
Agent DREM-1 acts synergistically, and strengthens the electrical stability of drilling fluid system, in addition, can change hydrophilic solid in drilling fluid system
The polarity of phase, suppress its sedimentation；It is furthermore preferred that the auxiliary emulsifying agent produces for China Petroleum Group Drilling Engineering Technology Research Institute
DRCO-1 type emulsifying agents, meet the auxiliary emulsifying agent evaluation criterion Q/SY ZJG0032-2012 of drilling fluid high temperature resistance.
In above-mentioned environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, the fluid loss additive is a kind of styrene of commissure
Polymer, temperature resistance is inflatable to form fine and close, slim mud cake up to 260 DEG C, and control oil phase reduces further towards stratum
Leak-off and formation damage；Preferably, the fluid loss additive is the DF01 type fluid loss additives of French Ou Nuofa companies production.
In above-mentioned environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, the calcium oxide main function is control drilling fluid
The pH value of system, prevent that sour gas is to drilling fluid contamination in drill tool corrosion and stratum.
In above-mentioned environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, the barite plays weighted drilling fluid；
Preferably, the dosage of the barite according to the density of finished product it needs to be determined that, the main component of the barite is barium sulfate,
Density is more than 4.2g/cm3。
The dosage of above-mentioned barite is according to the density of finished product it needs to be determined that the addition for referring to barite is to make environmental protection
The value that the density of type high temperature resistance gas liquefaction synthetic base drilling fluid reaches required for reaching.
The present invention also provides the preparation method of above-mentioned environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, including following step
Suddenly：
Primary emulsion (such as DREM-1) and auxiliary emulsifying agent (such as DRCO-1), high-speed stirred are added into gas liquefaction
20min, obtain the first mixed liquor；
Concentration 20wt% CaCl is added into the first mixed liquor2The aqueous solution, high-speed stirred 30min, obtain the second mixing
Liquid；
Organoclay (such as DRGEL) is added into the second mixed liquor, high-speed stirred 20min, obtains the 3rd mixed liquor；
Fluid loss additive (such as DF01) and calcium oxide, high-speed stirred 30min are added into the 3rd mixed liquor, it is mixed to obtain the 4th
Close liquid；
Barite is added into the 4th mixed liquor and adjusts the density of the mixed liquor to 2.0-2.3g/cm3, high-speed stirred
40min, obtain the 5th mixed liquor；
5th mixed liquor is fitted into ageing can and rolls aging 16h in 220 DEG C, obtains the synthesis of environment-friendly type high temperature resistance gas liquefaction
Base drilling fluid.
The present invention also provides above-mentioned environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid as environment-friendly type high temperature resistance drilling well
The application of liquid.
The environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid of gained of the invention, at a temperature of 220 DEG C, most high-density is reachable
2.3g/cm3, there is good high temperature emulsifying agent stability, emulsion-breaking voltage is more than 1000V, has a good rheological characteristic, and shear force is big
In 10Pa, there is good HTHP filtration property, high temperature and high pre ssure filtration is less than 10ml.
The present invention protrusion effect be：
The drilling fluid of the present invention while custom requirements of drilling fluid are met, can meet that the environment on land and sea is quick
Sensillary area domain deep ＆ ultra-deep well is to drilling fluid high temperature resistance and environment amenable requirement.
Embodiment
The method of the present invention is illustrated below by specific embodiment, so that technical solution of the present invention is easier to manage
Solution, grasp, but the invention is not limited in this.Experimental method described in following embodiments, it is conventional side unless otherwise specified
Method；The reagent and material, unless otherwise specified, are commercially obtained.
Embodiment 1：
The present embodiment provides a kind of environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, in parts by weight, including such as the following group
Part：
The parts by weight of gas liquefaction 80, concentration 20wt% CaCl2The parts by weight of the aqueous solution 20, primary emulsion DREM-13 parts by weight,
Auxiliary emulsifying agent DRCO-13 parts by weight, the parts by weight of organoclay DRGEL 2, fluid loss additive DF014 parts by weight, the parts by weight of calcium oxide 2 and
The parts by weight of barite 215.
The environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid of the present embodiment is prepared by following method：
Primary emulsion DREM-1 and auxiliary emulsifying agent DRCO-1, high-speed stirred 20min are added into gas liquefaction, it is mixed to obtain first
Close liquid；
Concentration 20wt% CaCl is added into the first mixed liquor2The aqueous solution, high-speed stirred 30min, obtain the second mixing
Liquid；
Organoclay DRGEL is added into the second mixed liquor, high-speed stirred 20min, obtains the 3rd mixed liquor；
Fluid loss additive DF01 and calcium oxide are added into the 3rd mixed liquor, high-speed stirred 30min, obtains the 4th mixed liquor；
Barite is added into the 4th mixed liquor and adjusts the density of the mixed liquor to 2.0g/cm3, high-speed stirred 40min, obtain
To the 5th mixed liquor；
5th mixed liquor is fitted into ageing can and rolls aging 16h in 220 DEG C, obtains the synthesis of environment-friendly type high temperature resistance gas liquefaction
Base drilling fluid.
Performance test is conventionally carried out to the environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid of gained, as a result such as
Shown in table 1：
Table 1
Embodiment 2：
The present embodiment provides a kind of environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, in parts by weight, including such as the following group
Part：
The parts by weight of gas liquefaction 85, concentration 20wt% CaCl2The parts by weight of the aqueous solution 15, primary emulsion DREM-13 parts by weight,
Auxiliary emulsifying agent DRCO-13 parts by weight, organoclay DRGEL2 parts by weight, fluid loss additive DF014 parts by weight, the parts by weight of calcium oxide 2 and
The parts by weight of barite 215.
The environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid of the present embodiment is prepared by following method：
Primary emulsion DREM-1 and auxiliary emulsifying agent DRCO-1, high-speed stirred 20min are added into gas liquefaction, it is mixed to obtain first
Close liquid；
Concentration 20wt% CaCl is added into the first mixed liquor2The aqueous solution, high-speed stirred 30min, obtain the second mixing
Liquid；
Organoclay DRGEL is added into the second mixed liquor, high-speed stirred 20min, obtains the 3rd mixed liquor；
Fluid loss additive DF01 and calcium oxide are added into the 3rd mixed liquor, high-speed stirred 30min, obtains the 4th mixed liquor；
Barite is added into the 4th mixed liquor and adjusts the density of the mixed liquor to 2.0g/cm3, high-speed stirred 40min, obtain
To the 5th mixed liquor；
5th mixed liquor is fitted into ageing can and rolls aging 16h in 220 DEG C, obtains the synthesis of environment-friendly type high temperature resistance gas liquefaction
Base drilling fluid.
The environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid of gained is conventionally tested, as a result such as table 2
It is shown：
Table 2
Embodiment 3：
The present embodiment provides a kind of environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, in parts by weight, including such as the following group
Part：
The parts by weight of gas liquefaction 90, concentration 20wt% CaCl2The parts by weight of the aqueous solution 10, primary emulsion DREM-13 parts by weight,
Auxiliary emulsifying agent DRCO-15 parts by weight, organoclay DRGEL3 parts by weight, fluid loss additive DF015 parts by weight, the parts by weight of calcium oxide 2 and
The parts by weight of barite 318.
The environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid of the present embodiment is prepared by following method：
Primary emulsion DREM-1 and auxiliary emulsifying agent DRCO-1, high-speed stirred 20min are added into gas liquefaction, it is mixed to obtain first
Close liquid；
Concentration 20wt% CaCl is added into the first mixed liquor2The aqueous solution, high-speed stirred 30min, obtain the second mixing
Liquid；
Organoclay DRGEL is added into the second mixed liquor, high-speed stirred 20min, obtains the 3rd mixed liquor；
Fluid loss additive DF01 and calcium oxide are added into the 3rd mixed liquor, high-speed stirred 30min, obtains the 4th mixed liquor；
Barite is added into the 4th mixed liquor and adjusts the density of the mixed liquor to 2.3g/cm3, high-speed stirred 40min, obtain
To the 5th mixed liquor；
5th mixed liquor is fitted into ageing can and rolls aging 16h in 220 DEG C, obtains the synthesis of environment-friendly type high temperature resistance gas liquefaction
Base drilling fluid.
The environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid of gained is conventionally tested, as a result such as table 3
It is shown：
Table 3
Therefore the environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid obtained by the embodiment of the present invention, in 220 DEG C of temperature
Under, most high-density is up to 2.3g/cm3, there is good high temperature emulsifying agent stability, emulsion-breaking voltage is more than 1000V, has good
Rheological characteristic, yield value is more than 10Pa, has good HTHP filtration property, and high temperature and high pre ssure filtration is less than 10ml；Energy
Enough while the custom requirements of drilling fluid are met, meet land with marine environmentally sensitive areas deep ＆ ultra-deep well to drilling fluid
High temperature resistance and environment amenable requirement.
Claims (11)
1. a kind of environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid, it includes following component：
Gas liquefaction 80-90 parts by weight, organoclay 2-3 parts by weight, primary emulsion 3-4 parts by weight, auxiliary emulsifying agent 2-5 parts by weight, drop
Fluid loss agents 2-5 parts by weight, concentration 20wt% CaCl2Aqueous solution 10-20 parts by weight, calcium oxide 2-4 parts by weight and barite；
Wherein, the organoclay includes following component：
2. environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid according to claim 1, it is characterised in that：The gas liquefaction
For the Saraline185V gas liquefactions of Shell Co. Ltd's production.
3. environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid according to claim 1, it is characterised in that：The organoclay
For the DRGEL type organoclays of China Petroleum Group Drilling Engineering Technology Research Institute's production.
4. environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid according to claim 1, it is characterised in that：The main emulsification
Agent is the arcuation combed long-chain molecule emulsifying agent that organic acid carries out amidation process preparation with organic amine.
5. environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid according to claim 4, it is characterised in that：The main emulsification
Agent is the DREM-1 type emulsifying agents of China Petroleum Group Drilling Engineering Technology Research Institute's production.
6. environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid according to claim 1, it is characterised in that：The auxiliary emulsification
Agent is the chainlet molecule emulsifying agent with hydrophile function group that organic acid carries out amidation process preparation with organic amine.
7. environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid according to claim 6, it is characterised in that：The auxiliary emulsification
Agent is the DRCO-1 type emulsifying agents of China Petroleum Group Drilling Engineering Technology Research Institute's production.
8. environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid according to claim 1, it is characterised in that：The filtrate reducing
Agent is the DF01 type fluid loss additives of French Ou Nuofa companies production.
9. environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid according to claim 1, it is characterised in that：The barite
Dosage according to the density of gas liquefaction synthetic base drilling fluid determine, the main component of the barite is barium sulfate, and density is big
In 4.2g/cm3。
10. the preparation method of the environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid described in claim any one of 1-9, including such as
Lower step：
Primary emulsion and auxiliary emulsifying agent are added into gas liquefaction, high-speed stirred 20min, obtains the first mixed liquor；
Concentration 20wt% CaCl is added into the first mixed liquor2The aqueous solution, high-speed stirred 30min, obtain the second mixed liquor；
Organoclay is added into the second mixed liquor, high-speed stirred 20min, obtains the 3rd mixed liquor；
Fluid loss additive and calcium oxide are added into the 3rd mixed liquor, high-speed stirred 30min, obtains the 4th mixed liquor；
Barite is added into the 4th mixed liquor and adjusts the density of the mixed liquor to 2.0-2.3g/cm3, high-speed stirred 40min, obtain
To the 5th mixed liquor；
5th mixed liquor is fitted into ageing can and rolls aging 16h in 220 DEG C, obtains environment-friendly type high temperature resistance gas oil synthetic base brill
Well liquid.
11. the environment-friendly type high temperature resistance gas liquefaction synthetic base drilling fluid described in claim any one of 1-9 is as environment-friendly type high temperature resistance
The application of drilling fluid.
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| CN109517587A (en) * | 2017-09-19 | 2019-03-26 | 中石化石油工程技术服务有限公司 | A kind of biomass synthetic base drilling fluid and preparation method thereof |
| CN110564387B (en) * | 2019-08-22 | 2021-11-09 | 中国石油天然气集团有限公司 | Ultrahigh-density environment-friendly gas-to-oil synthetic base drilling fluid and preparation method thereof |
| CN110791263B (en) * | 2019-11-15 | 2021-11-23 | 中国石油集团渤海钻探工程有限公司 | Clay-free phase synthetic base drilling fluid and preparation method thereof |
| CN110804426B (en) * | 2019-11-15 | 2021-11-23 | 中国石油集团渤海钻探工程有限公司 | Synthetic base drilling fluid and preparation method thereof |
| CN116948614A (en) * | 2023-06-30 | 2023-10-27 | 中国石油天然气集团有限公司 | Environment-friendly high-temperature-resistant soilless phase low-oil-water ratio synthetic base drilling fluid and preparation method and application thereof |
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