CN101974315B - Perforating fluid for well completion - Google Patents
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Abstract
The invention discloses a low-temperature microfoam perforating fluid for an offshore oil well completion, comprising the following materials: water, sodium carbonate, flow pattern regulators, foaming agents and stabilizers, wherein the ratio of the water, the sodium carbonate, the flow pattern regulators, the foaming agents to the stabilizers is 100:(0.1-0.3):(0.3-0.4):(0.1-0.2):(0.2-0.4) in parts by weight. The low-temperature microfoam perforating fluid also comprises clay stabilizers, inhibiters and waterproof locking agents. The low-temperature microfoam perforating fluid for the offshore oil well completion is a novel perforating fluid, not only has the advantages of the traditional common perforating fluid, but also newly increases the advantages of leakage prevention and leakage stoppage on performance, solves the problem of leakage loss in the completion process and also has adjustable density. The invention overcomes the defects of numerous and jumbled nitrogen foam configuration equipment and difficult control of circular foam density on use and has simple and easy configuration equipment and convenient and easy density adjustment.
Description
Technical field
The present invention relates to a kind of perforating fluid, be specifically related to a kind of offshore oil completion low-temperature micro-foam perforating fluid.
Background technology
Perforating fluid is the well finishing liquid that uses when being used for perforation in the Completion Operations.Well finishing liquid is the fluid that directly contacts reservoir, and its performance quality direct relation reserves and the output in oil field.Well-completion practice is the important component part of oil-gas field development.If Adopts measure is improper in well-completion practice, then might seriously reduce the oil gas well capacity, the protection hydrocarbon zone measure in the drilling process is fallen short of success for lack of final effort.Therefore, understand the characteristics that cause formation damage in the Completion Operations, design the well finishing liquid of various protection hydrocarbon zone, and can to select optimum completion mode according to the type of hydrocarbon-bearing pool and characteristic be a gordian technique of Completion Operations.
The reservoir damage main forms is the reduction of hydrocarbon zone rate of permeation, and permeability reduction must be more, and is more serious to the injury of hydrocarbon zone.On the one hand, reservoir damage is inevitable, in each cargo handling operations such as drilling well, completion, well workover, enforcement well stimulation and hydrocarbon zone exploitation, all may destroy owing to physics between working fluid and the reservoir, chemistry or biological interaction the state of reservoir reason, thus the resistance that increase oil gas flows.But then, reservoir damage can be controlled again, by implementing protection hydrocarbon zone, antipollution technology and measure, reservoir damage may be down to bottom line fully.
Perforation completion is one of main completion mode of Oil/gas Well at present.In general, if in drilling well, well cementing process, formed the injury band around the Oil/gas Well, then can with the injury past release, still, if in perforation, During Oil Testing Process, cause new injury, then be difficult to remedy by the perforation construction process.Perforating fluid is owing to directly contact with reservoir, and the injury of reservoir is mainly reflected in the following aspects, solid particle in injected water pore throat in the perforating fluid; Be incompatible with hydrocarbon zone mineral or fluid, produce chemical precipitation or fouling; Crude oil in perforating fluid and the hydrocarbon zone generates milk sap, or causes the reservoir wettability reversal, increases several aspects such as oil flow resistance.
For low pressure crack oil and gas field, viscous crude field, low pressure water-sensitive or oil-gas field and the exhausted oil-gas field of severe circulation loss easily occur, its hydrocarbon zone pressure factor often is lower than 0.8, in order to reduce pressure reduction to the injury of reservoir, can not adopt conventional water based completion liquid and oil-based completing fluid, when formation condition allows, should adopt gas base well finishing liquid.Gas base well finishing liquid commonly used mainly contains air, mist.But air and mist cause the problems such as borehole well instability, stratum water outlet easily.Nitrogen foam and circulating foam can solve the formation leakage problem to a certain extent.But nitrogen foam and circulating foam exist cost height, Auto-regulating System of Density of Heavy Medium difficulty, to problems such as multiple pressure power system stratum are inapplicable, these deficiencies have limited its application in exploratory development; Circulating foam only exists more than underground 200m, and microvesicle then no longer exists below well depth 2000m, can't finish the Deep Oil And Gas Exploration well operations.
Leakage problem in the Completion Operations also is on the rise, and causes finishing smoothly well-completion practice, affects next step oil extraction operation.Leakage can cause down-hole accident or complexcase, causes the engineering time to prolong, and operating cost increases, or even Oil/gas Well scraps, and then causes the serious wasting of resources and tremendous economic loss.Because extensive work liquid enters hydrocarbon zone, cause reservoir produce oil gas ability to descend, also to drop into larger man power and material and improve output and recovery ratio, affected oilfield economic benefit.At present, the most of oil gas field is in the exploitation middle and later periods, and leakage is on the rise, and needs novel method and the novel material of control Oil/gas Well leakage badly.
Summary of the invention
The present invention is directed to the leakage problem in the existing Completion Operations, and deficiency and the borehole wall stability problem of existing low pressure oil gas reservoir perforating fluid existence, and employ at scene problems such as equipment is many, the difficult adjustment of foam density, a kind of offshore oil completion low-temperature micro-foam perforating fluid is provided.
Perforating fluid provided by the invention comprises water, yellow soda ash, flow pattern regulator, whipping agent and stablizer; The ratio of quality and the number of copies of described water, yellow soda ash, flow pattern regulator, whipping agent and stablizer is 100: (0.1-0.3): (0.3-0.4): (0.1-0.2): (0.2-0.4).
In the above-mentioned perforating fluid, described flow pattern regulator can be the mixture of xanthan gum and borate crosslinker; The ratio of quality and the number of copies of described xanthan gum and borate crosslinker is: (1-2): 1, and such as 1: 1 or 2: 1.Described flow pattern regulator is mainly used in stablizing the microvesicle in the described microvesicle perforating fluid system, has the effect of the microvesicle of adjusting perforating fluid flow pattern.This flow pattern regulator of the present invention is compared with other treatment agent with similar effect in the prior art, the effective microvesicle in the stable microbubble perforating fluid, prevent that the unstable situation of gas-liquid layering, system that the microvesicle come-up occurs from occuring, and can regulate microvesicle perforating fluid flow pattern, make microvesicle perforating fluid viscosity under high shear rate lower, thereby have good rheological, be conducive to brokenly rock; Viscosity is higher under low shear rate, is conducive to cutting carring.And this flow pattern regulator of the present invention is good with the treatment agent compatibleness with general perforating fluid, and this flow pattern regulator is nontoxic, harmless, but is environment acceptance type treatment agent.Flow pattern regulator of the present invention is applicable to the temperature environment less than or equal to 120 ℃, is a kind of low-temperature micro-foam perforating fluid flow pattern regulator.
In the above-mentioned perforating fluid, the number-average molecular weight of described xanthan gum can be 2 * 10
6G/mol-2 * 10
7G/mol is such as 2 * 10
6G/mol, 2 * 10
7G/mol or 1.5 * 10
7G/mol; Described borate crosslinker can be sodium tetraborate or boric acid.
In the above-mentioned perforating fluid, described whipping agent can be the mixture of dimethyl dodecyl amine oxide and α-sodium olefin sulfonate (number-average molecular weight can be 300g/mol-320g/mol, specifically can be 300g/mol, 310g/mol or 320g/mol); The ratio of quality and the number of copies of described dimethyl dodecyl amine oxide and α-sodium olefin sulfonate can be (1-2): 1, and such as 1: 1 or 2: 1.Described whipping agent is mainly used in nucleation in microvesicle perforating fluid system, and this whipping agent can reduce gas-liquid surface tension force, and parcel enters mutually interior gas of body with the machinery effect, can effectively fully form gas nuclear in the microvesicle system.This whipping agent of the present invention is compared with other treatment agent with similar effect in the prior art, has the advantages that consumption is little, nucleogenesis is strong, also has the characteristics such as anti-salt, anticalcium ability is strong.And this whipping agent of the present invention is good with the treatment agent compatibleness with general drilling fluid, and this whipping agent is nontoxic, harmless, but is environment acceptance type treatment agent.Whipping agent of the present invention is applicable to the temperature environment less than or equal to 120 ℃, is a kind of low-temperature micro-foam perforating fluid whipping agent.
In the above-mentioned perforating fluid, described stablizer can be the mixture of sherwood oil, oleic acid sorbitol ester and lauryl alcohol; The ratio of quality and the number of copies of described sherwood oil, oleic acid sorbitol ester and lauryl alcohol can be (1-3): 2: (5-7), specifically can be 1: 2: 7,2: 2: 6 or 3: 2: 5.Described stablizer is mainly used in forming the rete of parcel gas nuclear outside microvesicle gas nuclear, begin to take shape microbubble structure.This stablizer of the present invention is compared with other treatment agent with similar effect in the prior art, not only can effectively reduce gas nuclear and surface tension continuously, can also outside gas nuclear, form the glutinous layer of height of parcel gas nuclear, can prevent effectively that gas is overflowed in the gas nuclear, keep gas nuclear stable, improve microvesicle intensity.And this stablizer of the present invention is good with the treatment agent compatibleness with general perforating fluid, and this stabilizer element is carbohydrate, and is nontoxic, harmless, but is environment acceptance type treatment agent.Stablizer of the present invention is applicable to the temperature environment less than or equal to 120 ℃, is a kind of low-temperature micro-foam perforating fluid stablizer.
Also comprise in clay stabilizer, inhibiter and the Waterproof lock agent at least a in the above-mentioned perforating fluid; The ratio of quality and the number of copies of described stablizer, inhibiter, Waterproof lock agent and water is (2-3): (1.5-2): (0.3-0.5): 100.
Above-mentioned perforating fluid specifically can be following perforating fluid: be comprised of water, yellow soda ash, flow pattern regulator, whipping agent, stablizer, clay stabilizer, inhibiter and Waterproof lock agent, the ratio of quality and the number of copies of described water, yellow soda ash, flow pattern regulator, whipping agent, stablizer, clay stabilizer, inhibiter and Waterproof lock agent is 100: (0.1-0.3): (0.3-0.4): (0.1-0.2): (0.2-0.4): (2-3): (1.5-2): (0.3-0.5).
In the above-mentioned perforating fluid, the ratio of quality and the number of copies of described water, yellow soda ash, flow pattern regulator, whipping agent, stablizer, clay stabilizer, inhibiter and Waterproof lock agent specifically can be 100: 0.2: 0.3: 0.1: 0.2: 2.5: 1.5: 0.4,100: 0.2: 0.4: 0.2: 0.4: 2.0: 1.5: 0.3 or 100: 0.2: 0.3: 0.1: 0.2: 3.0: 1.5: 0.5.
In the above-mentioned perforating fluid, described clay stabilizer can be epoxypropyltrimethylchloride chloride, and this clay stabilizer has stronger inhibition clay and drilling cuttings dispersive ability, can improve the inhibition of perforating fluid, is conducive to the stable of solid phase control and the borehole wall.Described inhibiter can be film-forming corrosion inhibitor, and such as the CA101-4 inhibiter, this inhibiter can be adsorbed on and form screened film prevention medium inhibition erosion on the steel surface.Described Waterproof lock agent can be the agent of PF-SATRO Waterproof lock, and this Waterproof lock agent has lower surface tension, and is good with local water and well finishing liquid compatibility.
In the above-mentioned perforating fluid, described water can be fresh water or seawater; Described seawater can be arbitrary seawater in South China Sea, the East Sea and the Bohai Sea.
The invention provides a kind of offshore oil completion low-temperature micro-foam perforating fluid, it is a kind of novel perforating fluid.On performance, offshore oil completion of the present invention is commonly used the advantage of perforating fluid except tool now with the low-temperature micro-foam perforating fluid, and the advantage of newly-increased leak-proof leak-stopping has solved the leakage problem in the Completion Operations, and had more the adjustable characteristics of density.In the use, the present invention has overcome the shortcoming that the nitrogen foam configuration device is numerous and jumbled, circulating foam density is controlled difficulty, and dosing apparatus is simple and easy, and density is adjusted easy.Perforating fluid preparation of the present invention is simple and easy, can make the perforating fluid on low pressure, leakage stratum, has the hydration of mud stone of inhibition swelling capacity and good protection hydrocarbon zone effect, is mainly used in low pressure, the low permeability formation completion construction technology.And perforating fluid of the present invention and reservoir compatibleness are good, and be good with other entry well fluid and underground fluid compatibleness; can not produce precipitation stops up the perforation tunnel and forms secondary pollution; reservoir protection is effective, and has good antiseptic power, can slow down the corrosion to sleeve pipe and mud motor.
Embodiment
Employed experimental technique is ordinary method if no special instructions among the following embodiment.
Used material, reagent etc. if no special instructions, all can obtain from commercial channels among the following embodiment.
Xanthan gum in the flow pattern regulator among the following embodiment of the present invention, borate crosslinker are bought respectively in Shandong Fu Feng fermentation company limited, the how lucky industry and trade in Jinan company limited.
Dimethyl dodecyl amine oxide in the whipping agent among the following embodiment of the present invention, α-sodium olefin sulfonate are bought respectively in Tianjin sensible Fine Chemical Co., Ltd, the safe chemical industry of Tianjin Development Zone pleasure company limited.
Sherwood oil in the stablizer among the following embodiment of the present invention, oleic acid sorbitol ester, lauryl alcohol are bought respectively in Zibo red-spotted stonecrop economy and trade company limited, Jiangsu Hai'an Petrochemical Plant, the safe Chemical trade of Tianjin prestige company.
CA101-4 inhibiter among the following embodiment of the present invention is bought in Jing Zhou, Hubei Jia Hua Science and Technology Ltd..
PF-SATRO Waterproof lock agent among the following embodiment of the present invention is bought in Jing Zhou, Hubei Jia Hua Science and Technology Ltd..
The preparation of low-temperature micro-foam perforating fluid of embodiment 1, offshore oil completion
Prescription is: (be comprised of at 1: 1 with ratio of quality and the number of copies xanthan gum and sodium tetraborate, wherein, the number-average molecular weight of yellow collagen is 2 * 10 for fresh water 400g, yellow soda ash 0.80g, flow pattern regulator 1.60g
6G/mol), whipping agent 0.80g (being formed at 2: 1 with ratio of quality and the number of copies by dimethyl dodecyl amine oxide and α-sodium olefin sulfonate (number-average molecular weight is 300g/mol)), stablizer 1.60g (being formed at 3: 2: 5 with ratio of quality and the number of copies by sherwood oil, oleic acid sorbitol ester and lauryl alcohol), clay stabilizer epoxypropyltrimethylchloride chloride 8.00g, CA101-4 inhibiter 6.00g and PF-SATRO Waterproof lock agent 1.20g.The quality proportioning of each component is water: yellow soda ash: flow pattern regulator: whipping agent: stablizer: clay stabilizer: inhibiter: the Waterproof lock agent is 100: 0.2: 0.4: 0.2: 0.4: 2.0: 1.5: 0.3.
According to above-mentioned prescription, under agitation condition, add successively yellow soda ash, flow pattern regulator, whipping agent, stablizer, clay stabilizer, sustained release dosage and Waterproof lock agent in the fresh water and namely get offshore oil completion low-temperature micro-foam perforating fluid, be labeled as the 1# perforating fluid.Wherein, the speed of stirring can be controlled at about 5000rpm.
The preparation of low-temperature micro-foam perforating fluid of embodiment 2, offshore oil completion
Prescription is: (be comprised of at 2: 1 with ratio of quality and the number of copies xanthan gum and boric acid, wherein, the number-average molecular weight of yellow collagen is 2 * 10 for Sea Water of The Bohai Gulf 400g, yellow soda ash 0.80g, flow pattern regulator 1.20g
7G/mol), whipping agent 0.40g (being formed at 1: 1 with ratio of quality and the number of copies by dimethyl dodecyl amine oxide and α-sodium olefin sulfonate (number-average molecular weight is 320g/mol)), stablizer 0.80g (being formed at 1: 2: 7 with ratio of quality and the number of copies by sherwood oil, oleic acid sorbitol ester and lauryl alcohol), clay stabilizer epoxypropyltrimethylchloride chloride 10.00g, CA101-4 inhibiter 6.00g and PF-SATRO Waterproof lock agent 1.60g.The quality proportioning of each component is water: yellow soda ash: flow pattern regulator: whipping agent: stablizer: clay stabilizer: inhibiter: the Waterproof lock agent is 100: 0.2: 0.3: 0.1: 0.2: 2.5: 1.5: 0.4.
Obtain offshore oil completion low-temperature micro-foam perforating fluid according to the preparation of the method among the embodiment 1, be labeled as the 2# perforating fluid.
The preparation of low-temperature micro-foam perforating fluid of embodiment 3, offshore oil completion
Prescription is: (be comprised of at 2: 1 with ratio of quality and the number of copies yellow collagen and sodium tetraborate, wherein, the number-average molecular weight of yellow collagen is 1.5 * 10 for South China Sea 400g, yellow soda ash 0.80g, flow pattern regulator 1.20g
7G/mol), whipping agent 0.40g (being formed at 1: 1 with ratio of quality and the number of copies by dimethyl dodecyl amine oxide and α-sodium olefin sulfonate (number-average molecular weight is 310g/mol)), stablizer 0.80g (being formed at 2: 2: 6 with ratio of quality and the number of copies by sherwood oil, oleic acid sorbitol ester and lauryl alcohol), clay stabilizer epoxypropyltrimethylchloride chloride 12.00g, CA101-4 inhibiter 6.00g and PF-SATRO Waterproof lock agent 2.00g.The quality proportioning of each component is water: yellow soda ash: flow pattern regulator: whipping agent: stablizer: clay stabilizer: inhibiter: the Waterproof lock agent is 100: 0.2: 0.3: 0.1: 0.2: 3.0: 1.5: 0.5.
Obtain offshore oil completion low-temperature micro-foam perforating fluid according to the preparation of the method among the embodiment 1, be labeled as the 3# perforating fluid.
Embodiment 4, embodiment 1,2 and 3 1#, 2# and the performance test of 3# perforating fluid
1, density measurement
With the drilling fluid liquidensitometer of suitable range, measure fresh water-based micro bubble drilling fluid for drilling coal bed gas density.
2, the mensuration of plastic viscosity, yield value and gel strength
2.1 instrument
Adopt Qingdao with the spring ZNN-D6 of oil Instr Ltd. type rotational viscosimeter, this viscometer is the rotary-type instrument take electric motor as power.Perforating fluid is in two annular spaces between concentric drums.Urceolus (or claiming rotating cylinder) rotates with constant speed (rpm).The rotation of rotating cylinder in perforating fluid produces moment of torsion to inner core (or claiming suspending hammer), and torsion spring stops the rotation of inner core, and the displacement of the dial plate that links to each other with suspending hammer indication suspending hammer.
2.2 mensuration program
Attention: the instrument maximum operating temperature is 93 ℃.Be higher than 93 ℃ perforating fluid as measuring temperature, should use solid metal inner core or the hollow metal inner core of inner complete drying.Because in the time of in being immersed in the high temperature perforating fluid, the liquid of hollow inner core inside may evaporate and cause breaking of inner core.
2.2.1 measure and the temperature of record perforating fluid, take ℃ as unit representation;
2.2.2 1#, 2# and 3# perforating fluid are injected in the container, and make rotating cylinder just be immersed into the scale marks place;
2.2.3 unlatching instrument, adjusting rotary speed at the 600rpm shelves, after the dial plate value of reading is constant, read and the recording meter panel value of reading;
2.2.4 adjusting rotary speed at the 300rpm shelves, after the dial plate value of reading is constant, reads and the recording meter panel value of reading;
2.3 calculate
By formula (I), formula (II) difference computational plasticity viscosity, yield value.
PV＝θ
600-θ
300 (I)
In the formula: PV is plastic viscosity, mPas; YP is yield value, Pa; θ
600, θ
300Constant value of reading during for 600rpm, 300rpm, zero dimension.
3, the mensuration of anti-swollen rate
3.1 instrument
Adopt Qingdao to measure with " the NP-01 type shale expansion tester " of spring oil Instr Ltd. production.
3.2 mensuration program
3.2.1 clean measuring cylinder, dry and in bottom the common filter paper of pad one deck, screw and survey a cylinder bottom;
3.2.2 after rock dust crossed 100 mesh sieves, at oven dry 4h under 105 ± 3 ℃ of temperature and after being cooled to room temperature, take by weighing 15 ± 0.01g and pack into and survey in the cylinder, rock dust is paved;
3.2.3 install the sealing-ring on the piston rod, piston rod is inserted survey in the cylinder, then be placed on gradually evenly pressurization on the pressing machine, until indicate 4MPa on the tensimeter, steady pressure 5min;
3.2.4 shed pressure, take off and survey cylinder, piston is slowly taken out from surveying in the cylinder, with the thickness (being original height) of the vernier caliper measurement sample heart;
3.2.5 the connection host power supply, preheating 30min;
Be installed in the middle of two connecting rods of main frame 3.2.6 will install the survey cylinder of the sample heart, just put, measuring staff (porose disc) is put into surveyed cylinder, make it and sample heart close contact, the center sensor hole is inserted in the measuring staff upper end;
3.2.7 previously prepd 1#, 2# and 3# perforating fluid (about 10mL) are injected in the survey cylinder, and the numerical value change situation of observed number word table records swell increment and corresponding time (continuous recording 16h) thereof simultaneously;
3.2.8 after the instrument work 16h, power cutoff is pulled down and is surveyed cylinder, measuring staff, cleans up and dries, and receives and keeps for subsequent use.
4, the mensuration of Corrosion Protection
According to petroleum industry standard GB-T 18175-2000 " mensuration of water conditioner corrosion inhibition: rotary hanging plate method ", with hanging slice method measuring 1#, 2# and the 3# perforating fluid corrosion condition to down-hole equipment and pipe fitting, estimate offshore completion with the corrosion class of low-temperature micro-foam perforating fluid system.
5, leak stopping performance measurement
Static leaking stoppage experiment uses improved Inst of Drilling-Well Technology, Huabei Petroleum Administration DLM-01A type sealing Analog Device, selects 40～60 order sand to do the casting bed leaking stoppage experiment.Add to drive and press 5.5MPa, back pressure 0.5MPa, record wastage and plugging time.
Dynamically leaking stoppage experiment uses Hai'an understressed sand productivity simulation system of oil scientific research Instr Ltd., chooses rate of permeation and does the rock core leaking stoppage experiment less than 0.5～1 μ m2 formation core or people's lithogenesis.Add to drive and press 5.5MPa, back pressure 0.5MPa, shearing rate 300s-1, record wastage and plugging time.
6, turbidity value is measured
6.1 instrument
" WGZ-4000 (P) turbidometer " that adopt the auspicious instrument of Shanghai sunrise company limited to produce measured.
6.2 mensuration program
6.2.1 the unlatching instrument, preheating 30min;
6.2.2 be ready to 10NTU and the 100NTU standardized solution of zero Turbidity Water and preparation calibration usefulness;
6.2.3 press setting key, enter the CS1 range, the zero Turbidity Water sample plasma bottle that installs is placed in the measuring seat, and the scale marks that guarantees sample plasma bottle should to aim at be white position line on the sheep seat, build shading cover, behind the value stabilization to be shown, press the zeroing of zeroing key;
6.2.4 adopt same method to change the 10.00NTU standardized solution, behind the value stabilization to be shown, press check key and proofread and correct;
6.2.5 press setting key, enter the CS2 range, repeat the 2.5.3 operation, change again 10.00NTU, the correction of 100.00NTU standardized solution.
6.2.6 enter measuring state by acknowledgement key, take out standardized solution, change the sample plasma bottle that 1#, 2# and 3# perforating fluid are housed, behind the value stabilization to be shown, can write down the turbidity value of specimen.
7, the core permeability recovery value is measured
Press oil and gas industry standard SY/T6540-2002 " damage of drilling fluid and completion fluid oil reservoir indoor evaluation method " and carry out, use under Hai'an oil scientific research Instr Ltd. understressed sand productivity simulation unit simulation drilling condition the reservoir protection effect of perforating fluid is studied and estimated.
The characteristic parameter of 1#, 2# and 3# perforating fluid is respectively shown in table 1, table 2 and table 3.
The performance perameter of table 1 1# perforating fluid
The performance perameter of table 2 2# perforating fluid
The performance perameter of table 3 3# perforating fluid
Data from table 1, table 2 and table 2 can find out that the properties of perforating fluid of the present invention is all in its index.
Claims (5)
1. a perforating fluid is characterized in that: comprise water, yellow soda ash, flow pattern regulator, whipping agent and stablizer; The ratio of quality and the number of copies of described water, yellow soda ash, flow pattern regulator, whipping agent and stablizer is 100:(0.1-0.3): (0.3-0.4): (0.1-0.2): (0.2-0.4);
Described flow pattern regulator is the mixture of xanthan gum and borate crosslinker; The ratio of quality and the number of copies of described xanthan gum and borate crosslinker is (1-2): 1;
Described whipping agent is the mixture of dimethyl dodecyl amine oxide and α-sodium olefin sulfonate; The ratio of quality and the number of copies of described dimethyl dodecyl amine oxide and α-sodium olefin sulfonate is (1-2): 1;
Described stablizer is the mixture of sherwood oil, oleic acid sorbitol ester and lauryl alcohol; The ratio of quality and the number of copies of described sherwood oil, oleic acid sorbitol ester and lauryl alcohol is (1-3): 2:(5-7).
2. perforating fluid according to claim 1, it is characterized in that: the number-average molecular weight of described xanthan gum is 2 * 10
6G/mol-2 * 10
7G/mol; Described borate crosslinker is sodium tetraborate or boric acid.
3. perforating fluid according to claim 1 and 2 is characterized in that: also comprise in clay stabilizer, inhibiter and the Waterproof lock agent at least a in the described perforating fluid; The ratio of quality and the number of copies of described stablizer, inhibiter, Waterproof lock agent and water is (2-3): (1.5-2): (0.3-0.5): 100.
4. perforating fluid according to claim 3, it is characterized in that: described perforating fluid is comprised of water, yellow soda ash, flow pattern regulator, whipping agent, stablizer, clay stabilizer, inhibiter and Waterproof lock agent, and the ratio of quality and the number of copies of described water, yellow soda ash, flow pattern regulator, whipping agent, stablizer, clay stabilizer, inhibiter and Waterproof lock agent is: 100:(0.1-0.3): (0.3-0.4): (0.1-0.2): (0.2-0.4): (2-3): (1.5-2): (0.3-0.5).
5. perforating fluid according to claim 4, it is characterized in that: described clay stabilizer is epoxypropyltrimethylchloride chloride; Described inhibiter is the CA101-4 inhibiter; Described Waterproof lock agent is the agent of PF-SATRO Waterproof lock.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102485826B (en) * | 2010-12-03 | 2014-02-05 | 中国石油天然气集团公司 | Low temperature microbubble drilling fluid flow pattern conditioning agent and application thereof |
| CN102485827B (en) * | 2010-12-03 | 2014-06-04 | 中国石油天然气集团公司 | Low-temperature micro-bubble drilling fluid foaming agent and application thereof |
| CN104497997B (en) * | 2015-01-08 | 2017-07-04 | 西南石油大学 | A kind of Low Damage completion fluid suitable for deep coal seam |
| CN105647498B (en) * | 2015-12-31 | 2018-12-25 | 中国石油天然气股份有限公司 | A kind of Waterproof lock workover fluid and manufacturing method |
| CN109207134B (en) * | 2018-10-23 | 2021-02-19 | 天津大港油田滨港集团博弘石油化工有限公司 | Surfactant composition for efficient oil displacement and preparation method thereof |
| CN109294535B (en) * | 2018-11-16 | 2021-02-23 | 中联煤层气有限责任公司 | Preparation method and preparation equipment of foam drilling fluid for three-gas open-hole exploitation |
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| CN101679845A (en) * | 2007-05-31 | 2010-03-24 | 赫尔克里士公司 | Oil-well cement fluid loss additive composition |
| CN101148579A (en) * | 2007-10-27 | 2008-03-26 | 东营泰尔石油技术有限公司 | High temperature resistant circulating micro-foam drilling fluid or completion fluid |
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| CN101974315A (en) | 2011-02-16 |
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