CN102807850B - Oil-based stuck freeing agent composition for drilling fluid and preparation method for oil-based stuck freeing agent composition - Google Patents
Oil-based stuck freeing agent composition for drilling fluid and preparation method for oil-based stuck freeing agent composition Download PDFInfo
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
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Abstract
The invention provides an oil-bases stuck freeing agent composition for drilling fluid and a preparation method for the oil-based stuck freeing agent composition. The composition contains span-80 or span-60, span-20 or span-40, alkyl benzene sulfonic acid, petroleum acid, poly acid and mineral oil. The preparation method includes pumping raw material components into a reaction kettle, stirring, heating to 65 DEG C-95 DEG C, heat-preserving, stirring for reacting for 120-180 minutes, cooling to the room temperature and discharging for packaging. A using method of the stuck freeing agent includes determining density of stuck freeing spotting fluid according to safe density of the drilling fluid needed on the spot, stirring water, diesel, kerosene, or other mineral oil and the stuck freeing agent, adding barite and stirring to form stuck freeing spotting fluid emulsion, pumping the formed emulsion into a sticking section for soaking to unfreeze, and continuously pumping into the stuck freeing spotting fluid at a speed of 0.16-0.36M3/h at the soaking stage until the sticking is released. The oil-based stuck freeing agent composition for the drilling fluid is convenient to use on the spot, small in using amount, convenient to conventionally carry for drilling crew, the maximum using amount is 8.7% of the stuck freeing spotting fluid, fluctuation range of stuck freeing time is narrow, the stuck freeing time of the stuck freeing spotting fluid with a density of 2.28g.cm<-3> ranges from 80 minutes to 160 minutes.
Description
Technical field
The invention belongs to petroleum drilling technology field, particularly relate to a kind of drilling fluid oil base releasing stuck agent composition and preparation method.
Background technology
Adhesion bit freezing, pressure differential sticking are the Common Accidents of Process of Oil Well Drilling, and this accident may cause well to be scrapped, and cause light nearly 1,000,000 heavy several financial losses of ten million to operation company.Solving one of method that adheres to bit freezing, pressure differential sticking is to use the stuck freeing spotting fluid of releasing stuck agent preparation to soak unfreezing.Releasing stuck agent has oil base, water base two kinds, oil base releasing stuck agent can avoid the water sensitivity on stratum to change, more safer, more effective than water base releasing stuck agent, is subject to operator's generally trust.
Domestic oil base releasing stuck agent has the following disadvantages:
Multi-agent separates, preparation is inconvenient: need to be used in conjunction with organophilic clay, asphalt powder, crude oil, calcium carbonate superfine powder, lime, otherwise stuck freeing spotting fluid can not be exacerbated to the needed density of engineering safety by barite, powdered iron ore; Organophilic clay, pitch, crude oil, lime are not the standing materials of drilling operation, and affect unfreezing efficiency, once meet with bit freezing, these material delivery are long to the time of situ of drilling well, can cause the accident more complicated, be more difficult to process.(" oil drilling technology " VOL19, No2, Jun, 1991)
The unfreezing time is long: the deposition of the oil-dispersing property solid phase colloidal solids such as organophilic clay, pitch hinders the infiltration to bonding interface between drilling tool and the borehole wall of releasing stuck agent, diesel oil, extend the unfreezing time, practical application effect can be poorer than indoor result, and when rig-site utilization, unfreezing success ratio is very low.(" Xinjiang chemical industry " Page19, No3,2006)
Summary of the invention
For present status in China, contriver has developed a kind of high-performance oil-based releasing stuck agent, when rig-site utilization by this releasing stuck agent, water, diesel oil by after mixing to certainty ratio, can directly add barite to be exacerbated to desired density.Barite, diesel oil are drilling engineering indispensability and standing material, find bit freezing once on-the-spot, can prepare rapidly stuck freeing spotting fluid and implement unfreezing operation.Releasing stuck agent of the present invention, in the time of application, has advantages of that simple, the on-the-spot preparation of formula is convenient, unfreezing efficiency is high.
Technical scheme of the present invention is as follows:
Oil base releasing stuck agent composition for a kind of drilling fluid, component and the mass fraction of composition are as follows:
Described poly acid refers to by the above longer chain fatty acid of double bond containing carbon 9 and is polymerized, and comprises dimer, tripolymer or multiple polymeric mixture.
The described above longer chain fatty acid of double bond containing carbon 9 comprises the unsaturated fatty acidss such as oleic acid, 9 cis-tetradecenoic acids, erucic acid or arachidonic acid.
Mineral oil described in the present invention refer to flash-point meet drilling engineering safety requirements, low pour point, petroleum hydrocarbon solvent oil, the object of adding is to reduce the pour point of core mixture, when being convenient to releasing stuck agent and applying in the winter time, from packing material, is pumped into dosing pond with pump.
Releasing stuck agent preparation method can adopt common mix and blend to carry out; Also can adopt following preparation method:
Material component is pumped into reactor, stir; Be warmed to 65-95 DEG C, insulation, stirring reaction 120-180 minutes; Cool to room temperature, discharging packaging.
The application of releasing stuck agent of the present invention, according to the selected stuck freeing spotting fluid density of the required drilling fluid Safe Density in scene and by the each density stuck freeing spotting fluid formula providing in table-1, water, diesel oil, kerosene or other mineral oil, releasing stuck agent are uniformly mixed, add again barite to stir and form stuck freeing spotting fluid emulsion, formed emulsion is pumped into bit freezing section by the required speed of engineering and soak unfreezing, impregnation stage is by 0.16～0.36M
3/ hour continue to pump into stuck freeing spotting fluid until bit freezing is removed.
Table-1, preparation (1.0m3) different specific weight stuck freeing spotting fluid formula reference value
Note: be reference formulation in table, can increase barite dosage when proportion is inadequate
In the present invention, the application of poly acid has effectively improved stuck freeing spotting fluid to bar suspending power, has broken away from the dependence of traditional stuck freeing spotting fluid to asphalt powder, organophilic clay, Paris white.
Petroleum acid refer to petroleum refining process two wires, third fractional oil or more heavy component oil through alkali cleaning, then through the by product of acid activation gained, in this releasing stuck agent, can play stripper.
Alkyl benzene sulphonate (ABS) plays auxiliary emulsion and stripper in this releasing stuck agent, at a certain temperature can with containing the petroleum acid generation sulfonation reaction of unsaturated link(age), the macromole table active substance that generating structure is more complicated, further improves the suspending power of stuck freeing spotting fluid to high-density weighting material.
Arlacel-80 or Arlacel-60 and Arlacel-20 or Arlacel-40 use in the present invention, play emulsifying effect.
Mineral oil component plays adjusting releasing stuck agent viscosity, pour point effect, is convenient to releasing stuck agent and is pumped in the dosing chamber of stuck freeing spotting fluid with pump from pail pack while application in the winter time, makes to apply more convenient.
The present invention possesses following technical characterstic:
1, formula, the rig-site utilization convenience of stuck freeing spotting fluid have been simplified: do not need to add the not standing materials of situ of drilling well such as organophilic clay, pitch, lime powder, can be mixed with non-scale-up version stuck freeing spotting fluid with water, diesel oil or other mineral oil, also can be mixed with by a certain percentage scale-up version stuck freeing spotting fluid with diesel oil or other mineral oil, water, barite, can prepare density range 0.85～2.26g/cm
3stuck freeing spotting fluid.Unfreezing efficiency is high and stable, unfreezing time fluctuation window narrows, and unfreezing efficiency is high, and effect stability is prepared simple and convenient.
2, releasing stuck agent consumption is few, and the highest consumption is only 8.7% of stuck freeing spotting fluid, is convenient to the conventional outfit of drill crew.
3, unfreezing time window is narrow, and fluctuation range is in 80min; Unfreezing is effective, when shop experiment, and density 2.28g.cm
-3the unfreezing time of stuck freeing spotting fluid is also between 80～160min.
As shown in Figure 1, the measured unfreezing time all fluctuates within the scope of narrower time window according to standard SY/T 6093-94 drilling fluid releasing stuck agent assessment process the required unfreezing time of each density stuck freeing spotting fluid of preparation.
Brief description of the drawings
Fig. 1: the indoor test gained of each density stuck freeing spotting fluid unfreezing time window.
Embodiment
Embodiment 1
Take each component according to following proportioning:
Each component is added to reactor, is heated to 65 DEG C, stirring reaction 120min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 2
Take each component according to following proportioning:
Each component is added to reactor, is heated to 95 DEG C, stirring reaction 180min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 3
Take each component according to following proportioning:
Each component is added to reactor, is heated to 75 DEG C, stirring reaction 100min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 4
Take each component according to following proportioning:
Each component is added to reactor, is heated to 75 DEG C, stirring reaction 180min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 5
Take each component according to following proportioning:
Each component is added to reactor, is heated to 75 DEG C, stirring reaction 150min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 6
Take each component according to following proportioning:
Each component is added to reactor, is heated to 80 DEG C, stirring reaction 130min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 7
Take each component according to following proportioning:
Each component is added to reactor, is heated to 80 DEG C, stirring reaction 130min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 8
Take each component according to following proportioning:
Each component is added to reactor, is heated to 90 DEG C, stirring reaction 110min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 9
Take each component according to following proportioning:
Each component is added to reactor, is heated to 70 DEG C, stirring reaction 150min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 10
Take each component according to following proportioning:
Each component is added to reactor, is heated to 95 DEG C, stirring reaction 180min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 11
Take each component according to following proportioning:
Each component is added to reactor, is heated to 95 DEG C, stirring reaction 180min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 12
Take each component according to following proportioning:
Each component is added to reactor, is heated to 65 DEG C, stirring reaction 120min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 13
Take each component according to following proportioning:
Each component is added to reactor, is heated to 65 DEG C, stirring reaction 120min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 14
Take each component according to following proportioning:
Each component is added to reactor, is heated to 85 DEG C, stirring reaction 120min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 15
Take each component according to following proportioning:
Each component is added to reactor, is heated to 65 DEG C, stirring reaction 120min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
Embodiment 16
Take each component according to following proportioning:
Each component is added to reactor, is heated to 65 DEG C, stirring reaction 120min, cooling, obtain required releasing stuck agent.
The stuck freeing spotting fluid of gained releasing stuck agent preparation, its unfreezing time reaches the scope shown in Fig. 1, and the suspension stability of stuck freeing spotting fluid meets the demands.
The application of releasing stuck agent of the present invention, is according to the selected stuck freeing spotting fluid density of the required drilling fluid Safe Density in scene, and prepares by the formula of the each density stuck freeing spotting fluid providing in table-1.
When the each density stuck freeing spotting fluid of situ configuration, that water, diesel oil (or kerosene or other mineral oil), releasing stuck agent are uniformly mixed, add again barite to stir and form stable stuck freeing spotting fluid emulsion, formed stuck freeing spotting fluid emulsion is pumped into bit freezing section by the required speed of engineering and soak unfreezing.Impregnation stage, by 0.16～0.36M
3/ hour continue to pump into stuck freeing spotting fluid, effectively unfreezing.
While selecting stuck freeing spotting fluid density, taking approach most on-the-spot drilling fluid density or at the scene within the scope of ' Safe Density Windows as principle.
These are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. an oil base releasing stuck agent composition for drilling fluid, is characterized in that the component of composition and mass fraction are as follows:
2. releasing stuck agent composition as claimed in claim 1, the poly acid described in it is characterized in that refers to by the above longer chain fatty acid of double bond containing carbon 9 and is polymerized.
3. releasing stuck agent composition as claimed in claim 1, is characterized in that described poly acid comprises the mixture of dimeracid, trimer acid or multiple polymer acid.
4. releasing stuck agent composition as claimed in claim 1, is characterized in that described poly acid is oleic acid, 9 cis-tetradecenoic acids, erucic acid, arachidonic dimer or tripolymer or multiple polymeric mixture.
5. releasing stuck agent composition as claimed in claim 1, is characterized in that described mineral oil is isolated from oil component, flash-point meets drilling engineering safety requirements, low pour point liquid condition petroleum hydrocarbon.
6. releasing stuck agent composition as claimed in claim 1, is characterized in that described mineral oil is white oil, diesel oil, machinery oil, solvent oil or kerosene.
7. the preparation method of releasing stuck agent composition as claimed in claim 1: it is characterized in that material component to pump into reactor, stir and be warmed to 65-95 DEG C, insulation reaction 120-180 minutes, cool to room temperature is prepared from.
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| CN106590561A (en) * | 2016-10-19 | 2017-04-26 | 中石化石油工程技术服务有限公司 | Palm oil based pipe free agent and preparation method thereof |
| CN112210352A (en) * | 2020-10-20 | 2021-01-12 | 克拉玛依新科澳石油天然气技术股份有限公司 | Oil well sucker rod soft stuck freeing agent, preparation method thereof and freeing use method |
| CN113088268B (en) * | 2021-03-12 | 2022-04-19 | 西南石油大学 | Oil-based drilling fluid composition, oil-based drilling fluid, and preparation method and application thereof |
| CN113278407A (en) * | 2021-06-12 | 2021-08-20 | 重庆领盛化工科技有限公司 | Drilling fluid polyether polyol stuck freeing material and preparation method and use method thereof |
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| CN1068842A (en) * | 1991-07-18 | 1993-02-10 | 鲁布里佐尔公司 | The method of drilling well eye and the composition that is used for drilling well |
| CN101921579A (en) * | 2010-09-29 | 2010-12-22 | 中国石油集团西部钻探工程有限公司 | Low-fluorescence sticking reliever and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068842A (en) * | 1991-07-18 | 1993-02-10 | 鲁布里佐尔公司 | The method of drilling well eye and the composition that is used for drilling well |
| CN101921579A (en) * | 2010-09-29 | 2010-12-22 | 中国石油集团西部钻探工程有限公司 | Low-fluorescence sticking reliever and preparation method thereof |
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Correction item: Patentee|Address|Patentee Correct: COSL CHEMICALS (TIANJIN) Co.,Ltd.|300301 Bohai Oil military grain city base, Tanggu District, Tianjin|CHINA OILFIELD SERVICES Ltd. False: COSL CHEMICALS (TIANJIN) Co.,Ltd.|300301 Bohai oil base, yangbei highway, Tanggu sidaoqiao, Binhai New Area, Tianjin Number: 01 Volume: 33 |
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Address after: 300450 Tianjin Binhai New Area Tanggu Sidaoqiao Yangbei Highway Boyou Base Patentee after: Tianjin Yike Environmental Protection Technology Co.,Ltd. Patentee after: CHINA OILFIELD SERVICES Ltd. Address before: 300301 Bohai Petroleum military grain city base, Tanggu District, Tianjin Patentee before: COSL CHEMICALS (TIANJIN) Co.,Ltd. Patentee before: CHINA OILFIELD SERVICES Ltd. |