CN106190065A - A kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient - Google Patents
A kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient Download PDFInfo
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- CN106190065A CN106190065A CN201610531506.4A CN201610531506A CN106190065A CN 106190065 A CN106190065 A CN 106190065A CN 201610531506 A CN201610531506 A CN 201610531506A CN 106190065 A CN106190065 A CN 106190065A
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- drilling fluid
- water
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- base drilling
- pressure coefficient
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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
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/06—Clay-free compositions
- C09K8/12—Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
Abstract
The invention discloses a kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient, it is characterized in that: be prepared from by ratio of weight and the number of copies by clear water, inhibitor, fluid loss additive, sealing agent, stabilizer, rheological control agents, pH adjusting agent, heavy weight additive, clear water: inhibitor: fluid loss additive: sealing agent: stabilizer: rheological control agents: pH adjusting agent: heavy weight additive=100:25～45:15～25:5～10:1～2:1～3:0.5～1:160～200.Use the present invention to be avoided that the environmental hazard of oil base drilling fluid, and there is efficiently closure, heterogeneous lubrication, compound suppression and Weak Gels characteristic.It is particularly suited for relatively Gao Jingwen (130 DEG C), easy aquation, easily collapses and the higher (2.3g/cm of reservoir pressure coefficient3) the shale gas horizontal well drilling of long horizontal sections that easily collapses of hard fragility, and there is good environment friendly and economy.
Description
Technical field
The present invention relates to oil and gas well drilling technical field, particularly relate to one and be applicable to the high property of shale gas horizontal well
Can water-base drilling fluid.
Background technology
Along with the success of U.S.'s shale gas large-scale commercial applications exploitation, China the most increasingly payes attention to the exploitation of shale gas and utilizes.
From the Sinian Period to Middle Triassic epoch, China has grows marine deposit widely, and distribution area reaches more than 200 square kilometres, adds up
Big formation thickness is more than 10Km.Estimating according to reliable exploration data, only south of Sichuan Basin, China Lower Cambrian Series Bamboo Temple group shale gas is just
It is 7.14～14.6 × 1012m3, it is 1～2 times of the whole Sichuan Basin existing conventional gas stock number.Therefore, shale gas is opened
Send out and both had wide practical use in China, also have high energy resource safety strategy meaning.
At present, the shale gas drilling technology of China is still in the experimental exploration stage, in shale gas long horizontal sections creeps into,
Hole stability is poor, and hole trajectory control difficulty is high, creeps into torque and friction value height, overall constructional difficulties.In order to keep shale gas
The drilling well safely and fast of horizontal segment, generally uses oil base drilling fluid, but oil base drilling fluid unit cost is high, and effect on environment is big,
And discarded oil base drilling fluid and oil base landwaste belong to hazardous waste, intractability is big, and processing cost is high.These of oil base drilling fluid
Deficiency, the most seriously constrains Efficient Development and the sustainable development of shale gas.Thus, can be the most satisfied in the urgent need to research one
The water-base drilling fluid of shale gas horizontal well drilling well safely and fast, to overcome the deficiency of oil base drilling fluid, thus reaches Efficient Development
Shale gas, it is achieved the purpose of sustainable development.
Publication No. CN101501159A, publication date is that the Chinese patent literature of on 08 05th, 2009 discloses improvement
High performance water-based drilling fluid, is a kind of water-base drilling fluid, it comprise in aqueous fluids, weighting agent and gellant at least one with
And lubricant, described lubricant comprises at least one ester derivant of at least one fatty acid deriving from Oleum Ricini.Use Semen Ricini
The derivant of the crude vegetals such as oil as lubricant advantage is: nontoxic, has fabulous biological degradability.But there is also
Hydrolysis and oxidation stability, low temperature flow and the problem of foaming.
Summary of the invention
It is contemplated that for the defect existing for above-mentioned prior art and deficiency, it is provided that one is applicable to Gao Jingwen highland
The water-base drilling fluid of stressor layer coefficient, uses the present invention to be avoided that the environmental hazard of oil base drilling fluid, and have efficiently closure,
Heterogeneous lubrication, compound suppression and Weak Gels characteristic.Be particularly suited for relatively low well temperature (more than 130 DEG C), easy aquation, easily collapse and
Reservoir pressure coefficient is higher (reaches 2.3g/cm3) the shale gas horizontal well drilling of long horizontal sections that easily collapses of hard fragility, and have
Well environment friendly and economy.
The present invention realizes by using following technical proposals:
A kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient, it is characterised in that: by clear water, inhibitor, fall filter
Mistake agent, sealing agent, stabilizer, rheological control agents, pH adjusting agent, heavy weight additive are prepared from by ratio of weight and the number of copies, clear water: suppression
Agent: fluid loss additive: sealing agent: stabilizer: rheological control agents: pH adjusting agent: heavy weight additive=100:25～45:15～25:5～
10:1～2:1～3:0.5～1:160～200.
Described inhibitor is the polyacrylic acid potassium KPAM by 0.4～0.6 weight portion, 0.5～1 polyanion of weight portion
Cellulose PAC-LV, 0.5～1 high solid phase drilling fluid inhibitor organic sial QLA, 20～25 formic acid of weight portion of weight portion
Potassium, the potassium chloride of 15 ~ 20 weight portions mix.
Described fluid loss additive is the sulfonated phenolic resin SMP by 4～5 weight portions, 1～3 high-temperature resisting and salt-resistings of weight portion
Fluid loss additive RSTF, 1～3 the modified natural resin complex JNJS-220 of weight portion mix.
Described sealing agent is the shale control agent SOLTEX by 1～2 weight portions, 2～5 modified retinasphals of weight portion
YH-150 mixes；
Described stabilizer is methyl propane sulfonic acid AB-201, and rheological control agents is fluosilicic high-temperature viscosity reducer SF260II, pH regulator
Agent is quick lime；Heavy weight additive is barite.
Compared with prior art, what the present invention was reached has the beneficial effect that:
1, the application motion is compared with oil base drilling fluid, has unit cost low, and effect on environment is little, and without follow-up oil base landwaste
Process the workload and expense brought.
2, the application motion is compared with the technical scheme mentioned by Publication No. CN101501159A, has: (1) is timely
Closure combines with long-acting closure；(2) mobility lubrication combines with binding affinity lubrication；(3) the permeability aquation of clay mineral
Suppress to combine with surface hydration suppression；(4) technological merit that drilling fluid liquid-liquid thixotropy and liquid-solid thixotropy combine,
Make the application motion have efficiently closure, heterogeneous lubrication, compound suppression and Weak Gels characteristic, be suitable for relatively Gao Jingwen (130
DEG C), easy aquation, easily collapse and the similar shale gas horizontal well of reservoir pressure coefficient higher (reaching 2.3g/cm3) safely and fast
Drilling well.
3, simultaneously, the present invention uses polyester and polyhydric alcohol composite shaft lining Sealing Technology, it is achieved to the instant envelope boring layer of turning up the soil
Stifled, and keep for a long time, effectively solve to be similar to a difficult problem for the hard fragility well unstability on shale gas stratum；Employing kinds of surface is lived
Property agent is collaborative and sulfonic polyester class lubrication technology, it is achieved multistage lubrication, to realize the rapid drilling purpose of long horizontal sections；Employing has
Machine salt and amino inhibitor, effectively reduce drilling fluid liquid phase activity and raising drilling fluid prevents the Yishui River that may be present in stratum
Change permeability aquation and the ability of surface hydration of clay mineral, it is achieved the long-time stability of earth formation deep.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein:
Fig. 1 is penetration hardness instrument test comparison figure before and after water-base drilling fluid；
Fig. 2 is that test well is real bores the pressure of the drill change in torque curve chart；
Fig. 3 is that high temperature and high pre ssure filtration changes over curve chart；
Fig. 4 is that the saturating dehydration of High Temperature High Pressure changes over curve chart；
Gel strength schematic diagram of the present invention when Fig. 5 is different well depth in real boring；
Fig. 6 is the gel strength schematic diagram of quiet permanent different time.
Detailed description of the invention
Embodiment 1
As a better embodiment of the present invention, it discloses a kind of water base brill being applicable to high well temperature high formation pressure coefficient
Well liquid, it is pressed weight by clear water, inhibitor, fluid loss additive, sealing agent, stabilizer, rheological control agents, pH adjusting agent, heavy weight additive
Amount portion rate is prepared from, clear water: inhibitor: fluid loss additive: sealing agent: stabilizer: rheological control agents: pH adjusting agent: add
Heavy prescription=100:25～45:15～25:5～10:1～2:1～3:0.5～1:160～200.
Described inhibitor is the polyacrylic acid potassium KPAM by 0.4～0.6 weight portion, 0.5～1 polyanion of weight portion
Cellulose PAC-LV, 0.5～1 high solid phase drilling fluid inhibitor organic sial QLA, 20～25 formic acid of weight portion of weight portion
Potassium, the potassium chloride of 15 ~ 20 weight portions mix.
Described fluid loss additive is the sulfonated phenolic resin SMP by 4～5 weight portions, 1～3 high-temperature resisting and salt-resistings of weight portion
Fluid loss additive RSTF, 1～3 the modified natural resin complex JNJS-220 of weight portion mix.
Described sealing agent is the shale control agent SOLTEX by 1～2 weight portions, 2～5 modified retinasphals of weight portion
YH-150 mixes.
Described stabilizer is methyl propane sulfonic acid AB-201, and rheological control agents is fluosilicic high-temperature viscosity reducer SF260II, pH
Regulator is quick lime；Heavy weight additive is barite.
Described high solid phase drilling fluid inhibitor organic sial QLA is that Sichuan Tai Rui petrochemical industry company limited is according to enterprise
The product of industry standard production, company standard number is Q/08332190-9.01-2016, and company standard is entitled, and " drilling fluid is with organic
Sial base inhibitor (QLA) ".
Described high-temperature resisting and salt-resisting fluid loss additive RSTF is that Tian Ze bored material Co., Ltd of Chongqing City is according to enterprise
The product of standard production, company standard number is Q/TZC1-2016, entitled " the drilling fluid high-temperature salt-resistant filtrate reducing of company standard
Agent humic acids propane sulfonic acid amide multiple copolymer (RSTF) ".
Described modified natural resin complex JNJS-220 is that Chengdu Xi Youhuawei Science and Technology Ltd. marks according to enterprise
The accurate product produced, company standard number is Q/ 66303827-X.30-2013, entitled " the drilling fluid high temperature resistance of company standard
Fluid loss additive modified natural resin complex (JNJS-220) ".
Described modified retinasphal YH-150 is that Chengdu, Chengdu Yu Ding Science and Technology Ltd. produces according to company standard
Product, company standard number is Q/ 74364173-0.5-2014, and company standard is entitled, and " oil base drilling fluid fluid loss additive is modified
Retinasphal (YH-150) ".
Described methyl propane sulfonic acid AB-201 is that deep hair oil gas field, Sichuan engineering science and technology company limited is raw according to company standard
The product produced, company standard number is Q/ 74961404-7.51-2015, entitled " the drilling fluid high-temperature stabilizer of company standard
Methyl propane sulfonic acid (AB-201) ".
Described fluosilicic high-temperature viscosity reducer SF260II is the product that Hebei Guigu Chemical Co., Ltd produces according to company standard
Product, company standard number is Q/HGH033-2015, company standard entitled " SF260-II drilling fluid fluosilicic high-temperature viscosity reducer ".
Embodiment 2
As a preferred forms of the present invention, its preparation method is as follows: weigh clear water, inhibitor, fluid loss additive, closure
Agent, stabilizer, rheological control agents, pH adjusting agent, heavy weight additive.
Concrete proportioning is: 400ml clear water, 2 grams of KPAM, 2 grams of PAC-LV, 2 grams of QLA, 60 grams of potassium chloride, 80 grams of potassium formates,
40 grams of SMP-1,10 grams of RSTF, 8 grams of JNJS-220,4 grams of SOLTEX, 10 grams of YH-150,4 grams of AB201,4 grams of SF260II, 3.2 grams
Quick lime is weighed out to 2.2g/cm3.After 11000r/min is thoroughly mixed, it is placed in 130 DEG C of roller furnaces ageing 16 little
Time.
The measurement of 55 DEG C of fundamental performance parameters is shown in Table 1:
With reference to Fig. 1, after high temperature and high pre ssure filtration 5min, filter loss declines to a great extent and gradually reduces to 40min filter loss is zero,
Achieve good instant stopper effect.The filter cake formed is taken out, replaces drilling fluid with clear water and load the high-performance prepared
Drilling fluid high-temperature high pressure filter cake, after 25min, pyrometry high pressure filter loss is 0, it is achieved that excellent long-acting plugging effect.
By the present invention and oil base drilling fluid and light water base drilling fluid performance comparison, as shown in table 2:
Claims (8)
1. the water-base drilling fluid being applicable to high well temperature high formation pressure coefficient, it is characterised in that: by clear water, inhibitor, fall
Fluid loss agents, sealing agent, stabilizer, rheological control agents, pH adjusting agent, heavy weight additive are prepared from by ratio of weight and the number of copies, clear water: press down
Preparation: fluid loss additive: sealing agent: stabilizer: rheological control agents: pH adjusting agent: heavy weight additive=100:25～45:15～25:5
～10:1～2:1～3:0.5～1:160～200.
A kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient the most according to claim 1, its feature exists
It is the polyacrylic acid potassium KPAM by 0.4～0.6 weight portion, 0.5～1 polyanion fiber of weight portion in: described inhibitor
Element PAC-LV, 0.5～1 weight portion high solid phase drilling fluid inhibitor organic sial QLA, 20～25 weight portion potassium formate,
The potassium chloride of 15 ~ 20 weight portions mixes.
A kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient the most according to claim 1 and 2, its feature
Be: described fluid loss additive be fluid loss additive be the sulfonated phenolic resin SMP by 4～5 weight portions, 1～3 anti-height of weight portion
Temperature salt resistant filter loss reduction agent RSTF, 1～3 the modified natural resin complex JNJS-220 of weight portion mix.
A kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient the most according to claim 3, its feature exists
In: stabilizer is methyl propane sulfonic acid AB-201.
A kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient the most according to claim 1, its feature exists
In: described sealing agent is shale control agent SOLTEX.
A kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient the most according to claim 1, its feature exists
In: rheological control agents is fluosilicic high-temperature viscosity reducer SF260II.
A kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient the most according to claim 1, its feature exists
In: pH adjusting agent is quick lime.
A kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient the most according to claim 1, its feature exists
In: heavy weight additive is barite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610531506.4A CN106190065A (en) | 2016-07-07 | 2016-07-07 | A kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient |
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| CN201610531506.4A CN106190065A (en) | 2016-07-07 | 2016-07-07 | A kind of water-base drilling fluid being applicable to high well temperature high formation pressure coefficient |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108003852A (en) * | 2017-12-27 | 2018-05-08 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of low density annulus protection drilling fluid repeatedly used |
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| CN103923622A (en) * | 2014-04-17 | 2014-07-16 | 中国石油大学(华东) | Multielement compound saltwater drilling fluid |
| CN105255460A (en) * | 2015-10-29 | 2016-01-20 | 中石化江汉石油工程有限公司 | Water-based drilling fluid suitable for shale gas development |
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2016
- 2016-07-07 CN CN201610531506.4A patent/CN106190065A/en active Pending
Patent Citations (6)
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| US20120157353A1 (en) * | 2010-12-21 | 2012-06-21 | Breeden David L | Water-Based Drilling Fluids Containing Crosslinked Polyacrylic Acid |
| CN102212345A (en) * | 2011-04-21 | 2011-10-12 | 中国石油集团渤海钻探工程有限公司 | Formula and preparation method of 180 DEG C temperature and salt resistant drilling fluid with strong inhibition and high density |
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| CN103923622A (en) * | 2014-04-17 | 2014-07-16 | 中国石油大学(华东) | Multielement compound saltwater drilling fluid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108003852A (en) * | 2017-12-27 | 2018-05-08 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of low density annulus protection drilling fluid repeatedly used |
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Application publication date: 20161207 |
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