CN104109512A - Low temperature fuzzy-ball working fluid fluff agent - Google Patents
Low temperature fuzzy-ball working fluid fluff agent Download PDFInfo
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- CN104109512A CN104109512A CN201310130336.5A CN201310130336A CN104109512A CN 104109512 A CN104109512 A CN 104109512A CN 201310130336 A CN201310130336 A CN 201310130336A CN 104109512 A CN104109512 A CN 104109512A
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- working fluid
- agent
- suede capsule
- fine hair
- suede
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
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Abstract
The invention relates to a coal bed gas low temperature freshwater fuzzy-ball working fluid fluff agent. The low temperature freshwater fuzzy-ball working fluid fluff agent is prepared by using xanthan gum, hydroxylpropyl guar gum and a deoxidant Na2SO3. The fuzzy-ball working fluid fluff agent is mainly used for stabilizing fuzzy balls in a fuzzy ball working fluid system, has the characteristics of small dosage and strong ball stabilizing effect, can adjust the flow pattern of a fuzzy ball working liquid, has good compatibleness with treatment agents for general working fluids, is suitable for the temperature environment with the temperature of 120DEG C or less, and is a coal bed gas low temperature freshwater fuzzy-ball working fluid fluff agent.
Description
Technical field
The present invention relates to the agent of a kind of suede capsule working fluid fine hair, refer to especially the low temperature suede capsule working fluid fine hair agent in a kind of temperature environment that is applicable to be less than or equal to 120 DEG C.
Background technology
[0002] for Oil/gas Well, working fluid (working fluid) generally includes working fluid, well finishing liquid, workover fluid etc.
Current most oil field all adopts blocking technology to improve Formation bearing pressure, completes leakage strata drilling, completion and workover treatment.Blocking technology comprises plugging material and shutoff theory.
Traditional plugging material comprises rubber, cement, fiber, plastics, polymkeric substance, inorganic gel, oil-soluble resin, pitch, sticky resin, acid-soluble patching materials, macro powder fiber etc.But in these materials, some material size and shapes do not mate with formation leakage channel sized and shape, control leakage effect undesirable; Under high temperature action, intensity is low, bearing capacity is poor for some materials; Some materials cannot be in normal operation, leak stopping voluntarily after preventing leakage and running into weak zone.
For improving plugging effect, researchist starts with from rigid material, has studied the matching problem of material size with leakage channel size, has successively proposed 1/3 bridge formation rule, 2/3 bridge formation rule, pore throat network model, ideal packing theory, D
90filling rule, shield-temporary plugging fractal theory, and solid phase particles polycomponent filtration model etc., to calculating sizeable plugging material, shutoff formation leakage passage comprehensively.But, due to subsurface reservoir pore size, distribute very inhomogeneously, cannot utilize the material size shutoff stratum of Theoretical Calculation.Meanwhile, the shape very irregular of underground leakage channel, with the more regular material shutoff leakage channel in irregular shape of shape, effect is certainly unsatisfactory.Therefore, the leakage problem that only solved to a certain extent that above-mentioned research theory has, what have only rests on theoretical level.
In the situation that plugging effect is undesirable, the gaseous fluids such as air, mist, foam, circulating foam, microvesicle are used to gas well drilling operation.Although these working fluids can solve the matching problem of patching materials and leakage channel size and shape, but these fluids are except circulating foam, microvesicle, higher to stratum stability requirement, poor to resident fluid adaptability, and need specific installation, thereby limited range of application.Although and circulating foam, microvesicle have solved leakage problem to a certain extent, the well depth of application is more shallow, also cannot meet drilling well needs comprehensively.
Suede capsule is a kind of different from the microvesicle microtexture new plugging material of finding in research microvesicle working fluid process.This plugging material containing suede capsule structure can preserve infiltration geometric distortion or change performance by oil gas, occupies to greatest extent reservoir and preserves and permeate space or form stratum mucosum, the seepage channel that shutoff varies in size.Containing working fluid, well finishing liquid and the workover fluid of suede capsule structure, not only have not must optional equipment can realize low without solid Density, control the advantages such as leakage, can also bear higher temperature and larger pressure.
In the present invention, will be used for the agent of the villose treatment agent fine hair of bubble.
But, suede capsule body mutually in easy Upward Migration, a large amount of floatings of suede capsule cause occurring gas-liquid separation phenomenon.In prior art, be generally used for the treatment agent that the working fluid of stabilise bubbles uses and be mainly such as xanthan gum of tackifier etc.Common tackifier only can increase system plastic viscosity, and a little less than increasing system yield value ability, in stabilising system, the key parameter of bubble is yield value.If can effectively improve system shear force, there is vital role for the suede capsule structure in stabilising system.
Summary of the invention
Main purpose of the present invention is for suede capsule working fluid system feature, research provides the agent of a kind of suede capsule working fluid fine hair, occur so that suede capsule stable existence in system, prevents the unstable situations such as suede capsule working fluid system layering, play the effect that regulates suede capsule working fluid flow pattern simultaneously.
The suede capsule working fluid fine hair agent that another object of the present invention is to provide described is in the application for the preparation of in suede capsule working fluid.
Another object of the present invention is to provide a kind of suede capsule working fluid that comprises suede capsule working fluid fine hair of the present invention agent.
First, the invention provides the agent of a kind of suede capsule working fluid fine hair, this suede capsule working fluid fine hair agent is by xanthan gum, hydroxypropyl guar and oxygen scavenger Na
2sO
3formulated.
According to preferred specific embodiments of the present invention, in suede capsule working fluid fine hair of the present invention agent, described xanthan gum, hydroxypropyl guar and oxygen scavenger Na
2sO
3mass ratio in the time of preparation is (2-4): (3-1): 1, and can be for example 2; 3:1,3:2:1 or 4:1:1.
According to specific embodiment of the invention scheme, described xanthan gum is polymer chain polysaccharide polymer, and its number-average molecular weight can be 2 × 10
6g/mol ~ 2 × 10
7g/mol; Described hydroxypropyl guar is gala-seminose vegetable jelly.
In the present invention, described xanthan gum, hydroxypropyl guar and oxygen scavenger Na
2sO
3all commercially available acquisitions, can select general industry product, and each component is mainly to improve viscosity to fine hair agent, and effect is impartial.
According to specific embodiment of the invention scheme, the pH value that this fine hair agent is mixed with after 1.0% aqueous solution is 6.0～7.0, apparent viscosity 10～20 mPas, base fluid medium staple capsule steady time >=24 h.
Suede capsule working fluid fine hair of the present invention agent is for suede capsule working fluid system feature and specialized designs is mainly used in stablizing the suede capsule in suede capsule working fluid system, has the strong feature of little, the steady capsule effect of consumption, has the effect of the suede of adjusting capsule working fluid flow pattern simultaneously.This fine hair agent of the present invention is with in prior art, other has compared with the treatment agent of similar effect, can effectively improve system shear force, stablize suede capsule working fluid medium staple capsule, the molecule of fine hair agent of the present invention can suede capsule working liquid mutually in form reticulated structure, stop suede capsule body mutually in Upward Migration, suede capsule is fixed in system, prevents that the suede capsule unstable situation of gas-liquid layering, system occurring that floats in a large number from occurring.This fine hair agent of the present invention and general work liquid are good by treatment agent compatibleness, and this fine hair agent is nontoxic, harmless, for environment can acceptance type treatment agent.
The present invention also provides the agent of described suede capsule working fluid fine hair in the application for the preparation of in suede capsule working fluid.Particularly, water base in every hectogram in suede capsule working fluid, the consumption of described suede capsule working fluid fine hair agent is 0.5～1.0 gram, can ensure suede capsule steady time more than 24 h, to have advantages of that few, the steady capsule effect of consumption is strong.
The present invention also provides a kind of suede capsule working fluid, comprising suede capsule working fluid fine hair of the present invention agent.Particularly, water base in every hectogram in suede capsule working fluid, comprising 0.5～1.0 gram of described suede capsule working fluid fine hair agent, i.e. 0.5～1.0 g fine hair agent/100 g water, can ensure that suede capsule steady time is more than 24 h.
According to specific embodiment of the invention scheme, described suede capsule working fluid can be suede capsule working fluid, suede capsule well finishing liquid or suede capsule workover fluid.
?
Embodiment
Further describe feature and the result of use of low temperature suede capsule working fluid fine hair of the present invention agent below by specific embodiment, but the present invention is not therefore subject to any restriction.
The experimental technique using in following embodiment if no special instructions, is ordinary method.
Material, reagent etc. used in following embodiment, if no special instructions, all can obtain from commercial channels.
embodiment 1
Test base fluid formula: fresh water 400g, sodium carbonate 0.40g, sodium hydroxide 0.40g, cystoblast agent 2.00g(are made up of with ratio of quality and the number of copies 3:1 carboxymethyl starch and Polyanionic Cellulose), fine hair agent 2.00g(is by xanthan gum, hydroxypropyl guar and oxygen scavenger Na
2sO
3with ratio of quality and the number of copies 2:3:1 composition, wherein, the number-average molecular weight of yellow collagen is 2 × 10
6g/mol), nucleator 0.40g(is made up of with ratio of quality and the number of copies 1:1:1:1 sodium laurylsulfonate, polyoxyethylene octyl phenol ether, OA-12 and four kinds of materials of dodecyl sulphate tri ethanol ammonium salt).The quality proportioning of each component is water: sodium carbonate: sodium hydroxide: cystoblast agent: fine hair agent: nucleator is 100:0.1:0.1:0.5:0.5:0.1.
According to above-mentioned formula, under agitation condition, in fresh water, add successively sodium carbonate, sodium hydroxide, cystoblast agent, nucleator, be mixed with base fluid, then in base fluid, add fine hair agent, be labeled as 1# test base fluid.Wherein, the speed of stirring can be controlled at 5000 rpm left and right.
embodiment 2
Test base fluid formula: fresh water 400g, sodium carbonate 0.40g, sodium hydroxide 0.40g, fine hair agent 3.20g(are by xanthan gum, hydroxypropyl guar and oxygen scavenger Na
2sO
3with ratio of quality and the number of copies 4:1:1 composition, wherein, the number-average molecular weight of yellow collagen is 1.5 × 10
7g/mol), nucleator 0.80g(is made up of with ratio of quality and the number of copies 2:1:1:1 sodium laurylsulfonate, polyoxyethylene octyl phenol ether, OA-12 and four kinds of materials of dodecyl sulphate tri ethanol ammonium salt), cystoblast agent 2.40g(is made up of with ratio of quality and the number of copies 4:1 carboxymethyl starch and Polyanionic Cellulose).The quality proportioning of each component is water: sodium carbonate: sodium hydroxide: cystoblast agent: fine hair agent: nucleator is 100:0.1:0.1:0.6:0.8:0.2.
According to above-mentioned formula, under agitation condition, in fresh water, add successively sodium carbonate, sodium hydroxide, cystoblast agent, nucleator, be mixed with base fluid, then in base fluid, add fine hair agent, be labeled as 2# test base fluid.Wherein, the speed of stirring can be controlled at 5000 rpm left and right.
embodiment 3
Test base fluid formula: fresh water 400g, sodium carbonate 0.40g, sodium hydroxide 0.40g, cystoblast agent 3.20g(are made up of with ratio of quality and the number of copies 5:1 carboxymethyl starch and Polyanionic Cellulose), fine hair agent 4.00g(is by xanthan gum, hydroxypropyl guar and oxygen scavenger Na
2sO
3with ratio of quality and the number of copies 3:2:1 composition, wherein, the number-average molecular weight of yellow collagen is 2 × 10
7g/mol), nucleator 1.20g(is made up of with ratio of quality and the number of copies 3:1:1:1 sodium laurylsulfonate, polyoxyethylene octyl phenol ether, OA-12 and four kinds of materials of dodecyl sulphate tri ethanol ammonium salt).The quality proportioning of each component is water: sodium carbonate: sodium hydroxide: cystoblast agent: fine hair agent: nucleator is 100:0.1:0.1:0.8:1.0:0.3.
According to above-mentioned formula, under agitation condition, in fresh water, add successively sodium carbonate, sodium hydroxide, cystoblast agent, nucleator, be mixed with base fluid, then in base fluid, add fine hair agent, be labeled as 3# test base fluid.Wherein, the speed of stirring can be controlled at 5000 rpm left and right.
embodiment 4
The performance of 1#, the 2# to embodiment 1,2 and 3 and the agent of 3# low temperature suede capsule working fluid fine hair is tested:
1 pH value
Take 2.0 g samples, put into volume 300 mL beakers, adding distil water 200 mL, stir 30min to fully dissolving, and drip solution on pH test paper, reference standard color range reading with clean glass stick.
2 determinations of moisture
2.1 take 5.00 g samples (is accurate to 0.01 g), is placed in the weighing bottle that weighed quality, in drying baker, dry 2 h in (105 ± 3) DEG C, be placed in moisture eliminator and be cooled to room temperature, weigh and (be accurate to 0.01 g).
2.2 moisture contents are calculated by formula (I):
（I）
In formula: be sample mass, g;
for drying sample mass, g.
3 apparent viscosity
3.1 instrument
Adopt Qingdao with the spring ZNN-D6 of oil Instrument Ltd. type rotational viscosimeter, this viscometer is the rotary-type instrument taking electric motor as power.In the annular space of working fluid between two concentric drums.Urceolus (or claiming rotating cylinder) rotates with constant speed (rpm).The rotation of rotating cylinder in working 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 being connected with suspending hammer instruction suspending hammer.
3.2 mensuration programs
Attention: instrument maximum operating temperature is 93 DEG C.As measured temperature higher than the working fluid of 93 DEG C, should use solid metal inner core or the hollow metal inner core of inner complete drying.Because in the time being immersed in hot operation liquid, the liquid of hollow inner core inside may evaporate and cause breaking of inner core.
3.2.1 measure and the temperature of writing task liquid, taking DEG C as unit representation.
3.2.2 use clean graduated cylinder to measure 400 mL distilled water and be transferred in clean jar, add 4 g fine hair agent in distilled water, homogenizer 5000 rpm stir 20 min.
3.2.3 the sample stirring is injected in container, and makes rotating cylinder just be immersed into scale marks place.
3.2.4 open instrument, adjusting rotary speed, at 600 rpm shelves, after the dial plate value of reading is constant, reads and the recording meter panel value of reading.
3.2.5 calculate
Calculate apparent viscosity by formula (III):
（III）
In formula: AV is plastic viscosity, mPas; Constant value of reading while being 600 rpm, zero dimension.
4 suede capsule steady times
Add fine hair agent herein, measure suede capsule working fluid base fluid and be greater than 72h steady time, according to contrast experiment in early stage, add separately xanthan gum, measure suede capsule working fluid base fluid and be less than 24h steady time.
4.1 measure 1#, the 2#, the 3# suede capsule working fluid test base fluid that prepare, measure density.
4.2 suede capsule working fluid Stability Determinations.Leave standstill test base fluid 24 h, observe suede capsule test base fluid stability, and measure its density.Variable density ± 0.05 g/cm
3can be considered stable.
Performance by the low temperature suede capsule working fluid fine hair agent of 1～4 pair of the present embodiment of above test procedure is tested, and acquired results is referring to table 1:
table 1 suede capsule working fluid fine hair agent performance test table
Can find out from above experimental result, the property indices of the low temperature suede capsule working fluid fine hair agent of the present embodiment all reaches design requirements.
Belong to the starting stage about the research of suede capsule working fluid treatment agent stabilise bubbles ability in the art, there is no General Requirement.Five performances in table 1, table 2 have strictly limited the quality bottom line of fine hair agent of the present invention.By apparent viscosity and suede capsule two performance index steady time, be enough to show that fine hair agent of the present invention has satisfactory stability suede capsule ability.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. a suede capsule working fluid fine hair agent, this suede capsule working fluid fine hair agent is by xanthan gum, hydroxypropyl guar and oxygen scavenger Na
2sO
3formulated.
2. suede capsule working fluid fine hair according to claim 1 agent, is characterized in that: described xanthan gum is polymer chain polysaccharide polymer, and its number-average molecular weight is 2 × 10
6g/mol ~ 2 × 10
7g/mol; Described hydroxypropyl guar is gala-seminose vegetable jelly.
3. according to the suede capsule working fluid fine hair agent described in claim l or 2, it is characterized in that: described xanthan gum, hydroxypropyl guar and oxygen scavenger Na
2sO
3mass ratio in the time of preparation is (2 ~ 4): (1 ~ 3): 1.
4. according to the suede capsule working fluid fine hair agent described in claim l, it is characterized in that: the pH value that this fine hair agent is mixed with after the 1.0wt% aqueous solution is 6.0～7.0 apparent viscosity 10～20 mPas, base fluid medium staple capsule steady time >=24 h.
Described in claim 1～4 any one the agent of suede capsule working fluid fine hair in the application for the preparation of in suede capsule working fluid.
6. application according to claim 5, is characterized in that: described suede capsule working fluid is working fluid, well finishing liquid or workover fluid.
7. application according to claim 5, is characterized in that: water base in every hectogram in suede capsule working fluid, the consumption of described suede capsule working fluid fine hair agent is 0.5～1.0 gram.
8. a suede capsule working fluid, comprising the suede capsule working fluid fine hair agent described in any one in claim 1～4.
9. suede capsule working fluid according to claim 8, is characterized in that: water base in every hectogram in suede capsule working fluid, and comprising 0.5～1.0 gram of described suede capsule working fluid fine hair agent.
10. suede capsule working fluid according to claim 8, this suede capsule working fluid is working fluid, well finishing liquid or workover fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310130336.5A CN104109512A (en) | 2013-04-16 | 2013-04-16 | Low temperature fuzzy-ball working fluid fluff agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310130336.5A CN104109512A (en) | 2013-04-16 | 2013-04-16 | Low temperature fuzzy-ball working fluid fluff agent |
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|---|---|
| CN104109512A true CN104109512A (en) | 2014-10-22 |
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|---|---|---|---|
| CN201310130336.5A Pending CN104109512A (en) | 2013-04-16 | 2013-04-16 | Low temperature fuzzy-ball working fluid fluff agent |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105820803A (en) * | 2015-01-04 | 2016-08-03 | 中国石油天然气股份有限公司 | Workover fluid and preparation method and application thereof |
| CN106010481A (en) * | 2016-06-03 | 2016-10-12 | 北京力会澜博能源技术有限公司 | Coal bed gas fuzzy-ball drilling fluid |
| CN106010487A (en) * | 2016-06-03 | 2016-10-12 | 北京力会澜博能源技术有限公司 | Capsule cytoplosm agent for coal bed gas fuzzy-ball drilling fluid and coal bed gas fuzzy-ball drilling fluid |
| CN108690586A (en) * | 2018-05-21 | 2018-10-23 | 北京力会澜博能源技术有限公司 | The capsule matter agent of natural gas well suede bag pressure well liquid |
| CN108690587A (en) * | 2018-05-21 | 2018-10-23 | 北京力会澜博能源技术有限公司 | The capsule suede agent of natural gas well suede bag pressure well liquid |
| CN108822818A (en) * | 2018-05-21 | 2018-11-16 | 中国石油大学(北京) | A kind of natural gas well suede bag pressure well liquid oil jacket is same to infuse quick kill-job technique |
| CN110358520A (en) * | 2019-06-18 | 2019-10-22 | 中国石油天然气股份有限公司 | Modified brine workover fluid oxygen scavenger, modified brine workover fluid and preparation method thereof |
| CN110938417A (en) * | 2019-12-10 | 2020-03-31 | 山东省食品发酵工业研究设计院 | Xanthan gum-based profile control agent for oil exploitation and preparation method and application thereof |
-
2013
- 2013-04-16 CN CN201310130336.5A patent/CN104109512A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105820803A (en) * | 2015-01-04 | 2016-08-03 | 中国石油天然气股份有限公司 | Workover fluid and preparation method and application thereof |
| CN106010481A (en) * | 2016-06-03 | 2016-10-12 | 北京力会澜博能源技术有限公司 | Coal bed gas fuzzy-ball drilling fluid |
| CN106010487A (en) * | 2016-06-03 | 2016-10-12 | 北京力会澜博能源技术有限公司 | Capsule cytoplosm agent for coal bed gas fuzzy-ball drilling fluid and coal bed gas fuzzy-ball drilling fluid |
| CN106010481B (en) * | 2016-06-03 | 2018-07-24 | 北京力会澜博能源技术有限公司 | Coal bed gas suede capsule drilling fluid |
| CN108690586A (en) * | 2018-05-21 | 2018-10-23 | 北京力会澜博能源技术有限公司 | The capsule matter agent of natural gas well suede bag pressure well liquid |
| CN108690587A (en) * | 2018-05-21 | 2018-10-23 | 北京力会澜博能源技术有限公司 | The capsule suede agent of natural gas well suede bag pressure well liquid |
| CN108822818A (en) * | 2018-05-21 | 2018-11-16 | 中国石油大学(北京) | A kind of natural gas well suede bag pressure well liquid oil jacket is same to infuse quick kill-job technique |
| CN110358520A (en) * | 2019-06-18 | 2019-10-22 | 中国石油天然气股份有限公司 | Modified brine workover fluid oxygen scavenger, modified brine workover fluid and preparation method thereof |
| CN110938417A (en) * | 2019-12-10 | 2020-03-31 | 山东省食品发酵工业研究设计院 | Xanthan gum-based profile control agent for oil exploitation and preparation method and application thereof |
| CN110938417B (en) * | 2019-12-10 | 2022-05-06 | 山东省食品发酵工业研究设计院 | Xanthan gum-based profile control agent for oil exploitation and preparation method and application thereof |
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Application publication date: 20141022 |