CN101348711A - Drill-feeding plugging agent and preparation thereof - Google Patents
Drill-feeding plugging agent and preparation thereof Download PDFInfo
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- CN101348711A CN101348711A CNA2008101159753A CN200810115975A CN101348711A CN 101348711 A CN101348711 A CN 101348711A CN A2008101159753 A CNA2008101159753 A CN A2008101159753A CN 200810115975 A CN200810115975 A CN 200810115975A CN 101348711 A CN101348711 A CN 101348711A
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- plugging agent
- shell
- feeding plugging
- oil
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- 239000003795 chemical substances by application Substances 0.000 claims abstract description 61
- 239000000843 powder Substances 0.000 claims abstract description 42
- 239000011347 resin Substances 0.000 claims abstract description 30
- 229920005989 resin Polymers 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 15
- 235000019738 Limestone Nutrition 0.000 claims abstract description 10
- 239000006028 limestone Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 12
- 244000018633 Prunus armeniaca Species 0.000 claims description 8
- 235000009827 Prunus armeniaca Nutrition 0.000 claims description 8
- 240000008866 Ziziphus nummularia Species 0.000 claims description 6
- 239000012467 final product Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
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- 235000020234 walnut Nutrition 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 239000000025 natural resin Substances 0.000 claims description 2
- 240000007049 Juglans regia Species 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 34
- 239000000203 mixture Substances 0.000 abstract 3
- 235000013399 edible fruits Nutrition 0.000 abstract 2
- 239000002002 slurry Substances 0.000 description 22
- 239000002585 base Substances 0.000 description 20
- 239000000654 additive Substances 0.000 description 11
- 230000000996 additive effect Effects 0.000 description 11
- 239000012530 fluid Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
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- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 241000758789 Juglans Species 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
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- 210000000867 larynx Anatomy 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 201000004569 Blindness Diseases 0.000 description 1
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- 239000002253 acid Substances 0.000 description 1
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- 239000000853 adhesive Substances 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
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- 229920003023 plastic Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a follow-drilling plugging agent, which comprises the following compositions: 50 to 70 portions of fruit shell powder, 20 to 60 portions of limestone powder and 0 to 20 portions of oil-soluble resin. The invention also discloses a method for preparing the follow-drilling plugging agent, comprising the following steps: firstly, various compositions are weighed according to the following mixture ratio: 50 to 70 portions of fruit shell powder, 20 to 60 portions of limestone powder and 0 to 20 portions of oil-soluble resin; and secondly, the materials are uniformly mixed by general mixing equipment, and then the follow-drilling plugging agent is formed. The follow-drilling plugging agent can be well applied to follow-drilling plugging in a drilling well and does not require stopping drilling and stopping a vibrating screen.
Description
Technical field
The present invention relates to a kind of additive for drilling fluid that is used for petroleum drilling engineering, relate to a kind of drill-feeding plugging agent and preparation method thereof specifically.
Background technology
In drilling process, leakage phenomena happens occasionally.Leakage is one of down hole problem common in drilling well, the completion process.At present, be that leakproof, leak stopping are parallel to the leakage that occurs in the drilling process both at home and abroad.Leakproof mainly is prediction formation pressure gradient, balanced-pressure drilling or under-balanced drilling." leak stopping " at present both at home and abroad leakage stopping technology has tens kinds, and bridge joint leak stopping, fractured leakage, gel leak stopping and blocking method that some are traditional are arranged.In order to block drop ply, must utilize various leak stopping materials, in the leakage channel of the very near scope of distance pit shaft, set up and stop up partition wall together, in order to cut off the runner of leakage.
But above-mentioned plugging agent does not belong to the lost circulation additive category, need stop to bore after entering weak zone, and this has just prolonged the activity duration, increased drilling cost, the leak stopping layer that forms causes difficulty to later well-completion practice and operation operation, is difficult to find oil reservoir, reduces crude production rate.
Some patching materials such as liquid sleeve pipe, though have the lost circulation additive function, the cost height, complex manufacturing, because its density is low, be difficult to sneak into mud, particularly in the leak stopping process, can not use Zhen Dong Sieve, the slurry phenomenon will take place to run when using reciprocating sieve, also bubble easily in addition, need to add defoamer, drilling speed is reduced, increased drilling cost.
The lost circulation additive technology is a kind of reservoir protection measure of using always.And have only to shout and to form high-quality drill-feeding plugging agent when the larynx diameter is strict to be mated when lost circulation additive material that uses and stratum.And in actual application, be difficult to accomplish " the strict coupling "; because accurate and complete hydrocarbon zone data is difficult for obtaining; select particle diameter that blindness is often arranged; on the other hand because the hydrocarbon zone non-homogeneity is stronger; shout larynx diameter Distribution a wider range; it is not very good often causing the drill-feeding plugging agent plugging effect, can only plugging effect preferably be arranged to a certain well section, and can not effectively protect whole hydrocarbon zone.For this reason, must develop a kind of novel lost circulation additive system, make its premium properties, and have very strong shut-off capacity and bearing capacity, creep into leak stopping and carry out synchronously with conventional drilling liquid with wide spectrum leak stopping function.
United States Patent (USP) usp303206 has invented a kind of a kind of particulate state plugging agent that uses discarded plant to process, this patent in use has the following disadvantages: very easily produce foam in drilling fluid, influence the rheological of drilling fluid, the plugged zone that forms is more loose, in use needing to stop boring leak stopping, in fact is not to belong to the lost circulation additive category.
Though some plugging agent such as bridge joint plugging agent and liquid sleeve pipe have the function of lost circulation additive, production cost is higher, and complex process takes place to bubble and stick with paste vibratory screening apparatus and run the slurry phenomenon in the leak stopping process easily, has reduced drilling speed, has increased drilling cost.
Chinese patent CN200410037657 has invented the novel drill-feeding plugging agent that a kind of main raw material is a discarded plant, but preparation method's complexity, the deformable particles straw of employed bridging action need soak at a certain temperature with alkali lye, to remove colloid and xylogen wherein, carrying out drying and crushing then could use, in addition, drill-feeding plugging agent of the present invention husky bed ultimate compression strength in mud is higher.
Summary of the invention
Leakage problem at existing in the present drilling process the invention provides a kind of drill-feeding plugging agent, and this plugging agent can lost circulation additive, does not influence mud property, and cost is low, and is effective, husky bed disruptive pressure height in mud.
Another object of the present invention provides a kind of preparation method of drill-feeding plugging agent, and this method technology is simple, is easy to realize.
A kind of drill-feeding plugging agent of the present invention comprises following component:
Shell grain weight amount is 50～70 parts;
Limestone powder weight is 20～60 parts;
Oil-soluble resin weight is 0～30 part.
Preferably, the median size of described shell powder particles is 100 orders.
The particle diameter of described shell is adjusted according to reservoir leakage situation, general lost circulation prevention, and in order not stick with paste vibratory screening apparatus, choosing median size is 100 purpose shell powder, if wastage is bigger, need do the particle diameter adjustment.Particle diameter is adjusted as following table:
| Reservoir wastage (m 3/h) | Particle size range (order) | Particle size range (mm) |
| Lost circulation prevention, lost circulation additive | 100 orders | 0.15 |
| ≤10 | The 80-60 order | 0.3～0.2 |
| 10-30 | The 50-40 order | 0.355-0.45 |
| 30-50 | The 40-20 order | 0.45-0.9 |
Annotate: average particle size range is that particle accounts for more than 85% of total content within the limits prescribed
Preferably, described shell powder is following any one or more than one shell powder, comprising walnut powder, and apricot shell powder, wild jujube shell powder and shell powder etc.
Preferably, described oil-soluble resin is a synthetic resins, or treated natural resin.
Preferably, described oil-soluble resin is selected at least a in the following resin for use: treated Gum Rosin, petroleum resin, ancient marlon resin, phenolic resinoid, Resins, epoxy, acrylic resin and other synthetic oil soluble resin.
A kind of drill-feeding plugging agent preparation method provided by the invention may further comprise the steps:
Step 1: take by weighing each component: 50～70 parts in shell powder, 20～60 parts of limestone powders, 0～20 part of oil-soluble resin according to following proportioning;
Step 2: with general mixing equipment above-mentioned materials is mixed and to get final product.
Preferably, the preparation of described shell powder is that shell is pulverized, and crosses 100 mesh sieves then.
Preferably, described shell is following at least a: nut-shell, apricot shell, wild jujube shell and shell etc.
Drill-feeding plugging agent of the present invention can well be applied to the lost circulation additive in the drilling well.Entering before the drop ply, is that 10～50Kg/ cubic meter add-on joins in the drilling fluid and gets final product with this agent by plugging agent weight and drilling fluid volume ratio, does not need to stop to bore and stop vibratory screening apparatus.If weak zone is longer, should add the drill-feeding plugging agent of 10～30Kg/ cubic meter again.
Drill-feeding plugging agent production cost of the present invention is low, and raw material sources are extensive, and ultimate compression strength is big, and plugging effect is remarkable.
In addition, drill-feeding plugging agent of the present invention also has following advantage:
1, has filling preferably, bridge blinding or plugging effect;
2, good with the mud compatibleness;
3, increased the bearing capacity on stratum effectively.Dual function with antiseep and leak stopping can effectively solve the seepage on stratum under the prerequisite of normally creeping into, can play mitigation to the middle leakage and the severe leakage on stratum;
4, the stratum of sealing cementing properties difference be can fill preferably, stratum bearing capacity and reinforcement ability improved;
5, creep into leak stopping and carry out synchronously, become multiple function, can effectively improve drilling speed by past simple function leak stopping;
6,, regulate after the grating of deformable particles the leakage that can block the stratum cracklin for fracture formation.In addition, because used material all is oil-soluble and acid soluble, can protect hydrocarbon zone effectively;
7, behind the adding drilling fluid, little to the property of drilling fluid influence, guarantee the stable of property of drilling fluid;
8, have certain oilness, reduce the down-hole friction.
Embodiment
Embodiment 1
Take by weighing each component according to following proportioning: 60 parts in shell powder, 30 parts of limestone powders, 10 parts of oil-soluble resins; Wherein, above-mentioned shell powder is selected walnut shell flour for use, and oil-soluble resin is selected the acrylic acid synthesizing oil-soluble resin for use; Then each component is mixed on general mixing equipment such as mixing machine or kneader.
The preparation of above-mentioned walnut shell flour is: nut-shell is pulverized, crossed 100 mesh sieves then and get final product.Use the shell powder effect of other type identical, for example select apricot shell, wild jujube shell and shell etc., and more than one mixing shell of these shells.Concrete preparation method is the same.
The preparation of above-mentioned limestone powder is: choose calcium carbonate content greater than 92% Wingdale, pulverize the back and cross 200 mesh sieves, screen over-size accounts for 5% of total amount at the most;
The preparation of above-mentioned oil-soluble resin is: choose synthetic oil-soluble resin, pulverize the back and cross 100 mesh sieves, screen over-size accounts for the 10%wt of oil-soluble resin at the most.Select
The plugging agent that present embodiment is made joins in the drilling fluid according to 1-4%, and test-results is as follows:
Table 1
| Variable | A V， mpa.s | P V，， mpa.s | Y P.， pa | Gel ，pa/pa | F L(HTHP)ml，(7MPa， 80℃，30min) |
| The base slurry | 38 | 23 | 15 | 4/8 | Total loss |
| Base slurry+1% present embodiment drill-feeding plugging agent | 37.5 | 23 | 14.5 | 4/8 | 43ml |
| Base slurry+2% present embodiment drill-feeding plugging agent | 37 | 23 | 14 | 4/8 | 33ml |
| Base slurry+3% present embodiment drill-feeding plugging agent | 36 | 23 | 13 | 4/7 | 22ml |
| Base slurry+3% present embodiment drill-feeding plugging agent | 35.5 | 23 | 12.5 | 4/7 | 1.8 |
Annotate: HTHP is husky height of bed temperature high pressure leakage, and AV is an apparent viscosity, and PV is a plastic viscosity, and YP is a yield value, and GEL is a gel strength.
As can be seen from Table 1, add after the drill-feeding plugging agent of the present invention in the base slurry, the rheology of mud does not have obvious variation, and the leakage of husky height of bed temperature high pressure significantly reduces, and dosage is big more, and husky bed leakage is more little.Being pressure energy power strengthens greatly.
The experiment of the husky bed of drill-feeding plugging agent disruptive pressure:
The drill-feeding plugging agent of present embodiment 1 preparation and to the disruptive pressure experiment that follows the pattern of, to be patent CN200410037657 sample in the same old way
Experimental procedure:
1 construction sand 8-20 order 100g, the high-temperature and high-pressure filter press of packing into (not adding filter paper) is paved sand;
2 usefulness 200ml clear water slowly wash, and use the nitrogen emptying.
Pour mud 200g to be measured into, slowly be forced into mud and all miss, the pressure of this moment is defined as disruptive pressure.
4. do the maximum disruptive pressure that adds system behind the drill-feeding plugging agent.
Table 2 drill-feeding plugging agent casting bed disruptive pressure experiment (the sand bed order is counted the 8-12 order)
| Project | Disruptive pressure, 80 ℃ |
| The base slurry | 3.5MPa puncture |
| Base is starched+4% pair of drill-feeding plugging agent in the same old way | 7MPa punctures |
| Base slurry+4% drill-feeding plugging agent of the present invention | 12MPa does not puncture |
Want high from the husky bed of table 2 disruptive pressure data drill-feeding plugging agent of the present invention as can be seen disruptive pressure than control group.
Being formulated as follows of above-mentioned base slurry:
Soil+0.2%Na as 3%
2CO
3+ 0.35%PF-PAC-HV+1%PF-FLO+0.4%PF-PLH+0.4%PF-JMH+1%PF-TEX
Wherein, PF-PAC-HV is high adhesive aggregation anionic cellulose, and PF-FLO is a treated starch, and PF-PLH is the high-molecular weight polyacrylamide, and PF-JMH is organic positive colloid, and PF-TEX is a sulfonated gilsonite.
Rig-site utilization:
After the success of drill-feeding plugging agent desk research; we have carried out rig-site utilization; the well that uses drill-feeding plugging agent at first is to adjust JingBZ25-D27Jing flatly; this mouthful well reservoir pressure depletion at that time is more serious; stratum phenomenon in debt is outstanding; reduced about 7-8MPa in the pressure ratio performance history at that time; so leakage takes place in adjusting the well operations process easily; this well design 95/8 " under the sleeve pipe to 1780 meters; also have about 400 meters apart from oil layer section here, and these 400 meters, be mainly mud stone; consider comprehensive cost and on-the-spot exploitativeness; suggestion uses drill-feeding plugging agent to creep into, and density is controlled at about 1.15, because drill-feeding plugging agent effectively raises the stratum bearing capacity in drilling fluid; shutoff is carried out on pressure stratum in debt; prevented the reservoir leakage, further improved the mud cake quality of water-based mud, reduced the mud dehydration; protect reservoir better more in time, do not miss.
In using the drill-feeding plugging agent process, the every performance of mud does not have to change substantially, and vibrations wire screen adopts 85 * 3+50 * 3 not run the slurry phenomenon.So far, drill-feeding plugging agent uses in 30 mouthfuls of well drilling process, and is respond well.
Embodiment 2
Take by weighing each component according to following proportioning: 50 parts in shell powder, 40 parts of limestone powders, 2 parts of oil-soluble resins; Wherein, above-mentioned shell powder is selected apricot shell powder for use, and oil-soluble resin is selected phenolic resinoid for use; The preparation method is with embodiment 1.
Embodiment 3
Take by weighing each component according to following proportioning: 70 parts in shell powder, 60 parts of limestone powders, 20 parts of oil-soluble resins; Wherein, above-mentioned shell powder is selected wild jujube shell powder for use, and oil-soluble resin is selected Resins, epoxy for use; The preparation method is with embodiment 1.
The preparation of above-mentioned apricot shell powder is: the apricot shell is pulverized, crossed 100 mesh sieves then and get final product.Use the shell powder effect of other type identical, the preparation method is the same.
The plugging agent that each embodiment is made joins in the drilling fluid according to 1-4%, and test-results is as follows:
Table 3
| Variable | A V， mpa.s | P V，， mpa.s | Y P.， pa | Gel ，pa/pa | F L(HTHP)ml，(7MPa， 80℃，30min) |
| The base slurry | 38 | 23 | 15 | 4/8 | Total loss |
| Base slurry+1% embodiment 2 drill-feeding plugging agents | 37 | 23 | 14.5 | 4/8 | 42 |
| Base slurry+2% embodiment 2 drill-feeding plugging agents | 37 | 23 | 14 | 4/8 | 32 |
| Base slurry+3% embodiment 2 drill-feeding plugging agents | 36 | 23 | 13 | 4/7 | 22 |
| Base slurry+4% embodiment 2 drill-feeding plugging agents | 36 | 23 | 13 | 4/7 | 1.6 |
| Base slurry+1% embodiment 3 drill-feeding plugging agents | 37 | 23 | 14.5 | 4/8 | 44 |
| Base slurry+2% embodiment 3 drill-feeding plugging agents | 37 | 23 | 14.5 | 4/8 | 34 |
| Base slurry+3% embodiment 3 drill-feeding plugging agents | 35.5 | 23 | 14 | 4/7 | 23 |
| Base slurry+4% embodiment 3 drill-feeding plugging agents | 35. | 23 | 13 | 4/7 | 1.7 |
The base slurry is with embodiment 1.
Being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1, a kind of drill-feeding plugging agent is characterized in that, comprises following component:
Shell grain weight amount is 50～70 parts;
Limestone powder weight is 20～60 parts;
Oil-soluble resin weight is 0～20 part.
2, a kind of drill-feeding plugging agent as claimed in claim 1 is characterized in that, the median size of described shell powder particles is 100 orders.
3, a kind of drill-feeding plugging agent as claimed in claim 1 is characterized in that, described shell powder is following any one shell powder, comprising walnut powder, and apricot shell powder, wild jujube shell powder and shell powder etc.
4, a kind of drill-feeding plugging agent as claimed in claim 1 is characterized in that, described oil-soluble resin is a synthetic resins, or treated natural resin.
5, a kind of drill-feeding plugging agent as claimed in claim 4, it is characterized in that, described oil-soluble resin is selected at least a in the following resin for use: treated Gum Rosin, petroleum resin, ancient marlon resin, phenolic resinoid, Resins, epoxy, or other oil soluble synthetic resins.
6, a kind of method for preparing the arbitrary described drill-feeding plugging agent of claim 1 to 5 is characterized in that, may further comprise the steps:
Step 1: take by weighing each component: 50～70 parts in shell powder, 20～60 parts of limestone powders, 0～20 part of oil-soluble resin according to following proportioning;
Step 2: with general mixing equipment above-mentioned materials is mixed and to get final product.
7, a kind of drill-feeding plugging agent as claimed in claim 6 is characterized in that, the preparation of described shell powder is that shell is pulverized, and crosses 100 mesh sieves then.
8, a kind of drill-feeding plugging agent as claimed in claim 6 is characterized in that, described shell is following at least a: nut-shell, apricot shell, wild jujube shell and shell etc.
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|---|---|---|---|
| CN2008101159753A CN101348711B (en) | 2008-07-01 | 2008-07-01 | Drill-feeding plugging agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101159753A CN101348711B (en) | 2008-07-01 | 2008-07-01 | Drill-feeding plugging agent |
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| CN101348711B CN101348711B (en) | 2012-05-23 |
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| CN101525985B (en) * | 2009-04-10 | 2012-06-20 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Process for plugging bored well by forming cork for plugging |
| CN102604627A (en) * | 2011-10-26 | 2012-07-25 | 中国石油化工股份有限公司 | Acid fracturing temporary plugging agent |
| CN103045184A (en) * | 2012-12-31 | 2013-04-17 | 中国地质大学（北京） | Ultralow-permeation plugging anti-sloughing oil layer protective agent for drilling fluid and preparation method of protective agent |
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| CN105482784A (en) * | 2015-12-01 | 2016-04-13 | 长江大学 | Oil-based drilling fluid plugging agent |
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| CN108300437A (en) * | 2017-12-20 | 2018-07-20 | 中国石油天然气股份有限公司 | A kind of oil-soluble mounting medium and preparation method thereof for bottom water reservoir pressure break |
| CN108641684A (en) * | 2018-04-26 | 2018-10-12 | 廊坊庆兴化工有限公司 | A kind of drilling fluid compound resin lubricating collapse-resisting agent and preparation method thereof |
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