CN104479649B - One kind drilling shale low density water base drilling fluid - Google Patents

One kind drilling shale low density water base drilling fluid Download PDF

Info

Publication number
CN104479649B
CN104479649B CN201410850834.1A CN201410850834A CN104479649B CN 104479649 B CN104479649 B CN 104479649B CN 201410850834 A CN201410850834 A CN 201410850834A CN 104479649 B CN104479649 B CN 104479649B
Authority
CN
China
Prior art keywords
drilling fluid
grams
adds
stirring
drilling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201410850834.1A
Other languages
Chinese (zh)
Other versions
CN104479649A (en
Inventor
白杨
王平全
王波
杜敬国
时海涛
余冰洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southwest Petroleum University
Original Assignee
Southwest Petroleum University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Southwest Petroleum University filed Critical Southwest Petroleum University
Priority to CN201410850834.1A priority Critical patent/CN104479649B/en
Publication of CN104479649A publication Critical patent/CN104479649A/en
Application granted granted Critical
Publication of CN104479649B publication Critical patent/CN104479649B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C09K8/14—Clay-containing compositions
    • C09K8/18—Clay-containing compositions characterised by the organic compounds
    • C09K8/22—Synthetic organic compounds
    • C09K8/24—Polymers
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Earth Drilling (AREA)

Abstract

Shale low density water base drilling fluid is crept into the present invention relates to one kind.It, which overcomes, uses water-base drilling fluid borehole well instability problem.Its technical scheme is to prepare the drilling fluid raw materials used component and content：Drilling fluid bentonite 30 50；Sodium carbonate 1.5 2.5；Sodium hydroxide 5 10；Extracting and cutting agent SZT15 20；Amphoteric ion polymer coating agent FA3672 5；Fluid loss additive CG810S T10 15；Drilling fluid rheology conditioning agent JHRM0.2 1；Bloom calcium carbonate C L50140 60；Lubricant R 1,610 30；Emulsified wax 25 35；Drilling fluid solid polymerization alcohol JHGC40 60；Running water 1000.Running water, drilling fluid bentonite, soda ash prehydration 24 hours are first added, is added under 8000r/min stirrings after extracting and cutting agent SZT and above-mentioned inorganic agent is sequentially added under 500r/min stirring conditions, regulation system pH is eventually adding barite to 8.5.This drilling fluid system inhibition is good, seal-off effect strong, the drilling for rammell long horizontal sections.

Description

One kind drilling shale low density water base drilling fluid
Technical field
Shale low density water base drilling fluid is crept into the present invention relates to one kind, the shale for being particularly suitable for microcrack development is long The drilling of net horizontal section.
Background technology
Shale gas well generally uses oil base drilling fluid both at home and abroad at present, because oil base drilling fluid can improve hygroscopicity shale Capillary pressure, prevents intrusion of the drilling fluid to shale, can be effectively by using oil base drilling fluid and synthetic base drilling fluid The problem of solving hole instability.It is external using oil base drilling fluid system in terms of shale gas horizontal well wellbore stability is tackled Current maximally effective measure.Even if using oil base drilling fluid, the shale formation of fracture or stratification development, it is necessary to reinforcing envelope It is stifled, enter the pressure transmission (block fluid passage) that stratum is caused to reduce liquid.Oil base drilling fluid is in lubrication, anti-sticking and drop resistance There is the incomparable advantage of water-base drilling fluid in terms of effect, can avoid dragging pressure problem during slide drilling, this is also that its is wide Where the basic reason of general application.But because oil base working solution makes the wettability modification of low permeability pay and gas-bearing formation and causes wound Evil, is greatly lowered reservoir permeability, so as to reduce oil well output.Indoor core experiment shows, when core is changed into by hydrophilic During oleophylic, its recovery ratio drops to 17% by 51%.Therefore, it should cautiously be bored in low permeability pay using oil base drilling fluid and open production Layer, when especially having emulsifying agent, surfactant in oil base drilling fluid.
Advantage and disadvantage water-base drilling fluid advantage compared to oil base drilling fluid has：1. it is environmentally friendly；2. natural gas leaching is easy finds；3. temperature It is smaller to rheology impact；4. cost is relatively low；5. meet leakage to be easily processed, shortcoming has：1. borehole wall stability is poor；2. heat is steady It is qualitative relatively poor, it is easy to high temperature gel；3. resistance tocrocking poor (solid phase and CO2、H2S gaseous contaminations), safeguard processing workload Greatly；4. anti-sticking scarce capacity is lubricated.Therefore, develop a kind of novel water-based drilling fluid that can be suitably used for shale formation and substitute oil base brill The problems such as well liquid can solve the problem that wellbore stability, reservoir pollution is then the key technology of current shale gas drilling well, is also domestic and international page Where the difficult point of rock drilling well.
The content of the invention
The purpose of the present invention is：Borehole well instability problem when creeping into shale formation using water-base drilling fluid at present to overcome, Suppress shale formation aquation to cave in, can effectively block the micro-nano slit of shale, a kind of drilling shale low-density is provided for this spy Water-base drilling fluid.
In order to achieve the above object, the present invention uses following technical scheme：One kind drilling shale low-density water-based drilling Liquid, it is characterized in that prepare the raw materials used component of the drilling fluid and content is, wherein mass unit for gram：Sodium carbonate 1.5-2.5； Drilling fluid bentonite 30-50；Extracting and cutting agent SZT 15-20；Amphoteric ion polymer coating agent FA3672-5；Fluid loss additive CG810S-T10-15；Drilling fluid rheology conditioning agent JHRM 0.2-1；Bloom calcium carbonate C-L50140-60；Lubricant R- 1610-30；Polymeric alcohol 40-60；Emulsified wax 25-35；Running water 1000, be configured to NaOH 40% alkali lye regulation system pH For 8.5, addition barite regulating density of drilling liquid to 1.20g/cm3。
The present invention it is a kind of drilling shale be with the preparation method of low density water base drilling fluid：
Water temperature is risen to 70 DEG C by the running water for first measuring 1000 grams, and 30-50 is added under low speed 500r/min electric stirrings Gram drilling fluid bentonite, stirring 10min add 1.5-2.5 grams of Na2CO3It is stirred for prehydration 24h under 30min, normal temperature and pressure Afterwards, 15-20 grams of extracting and cutting agent SZT stirring 6min is added under high speed 8000r/min electric stirrings, then it is electronic in low speed 500r/min Stirring is lower to add 2-5 grams of amphoteric ion polymer coating agent FA367 stirring 5min, adds 10-15 grams of fluid loss additive CG810S-T 5min is stirred, 0.2-1 grams of drilling fluid rheology conditioning agent JHRM stirring 5min is added, adds 40-60 grams of bloom calcium carbonate C- L501 stirs 15min, adds 10-30 grams of lubricant R-16 stirring 5min, adds 40-60 grams of drilling fluid solid polymerization alcohol JHGC 5min is stirred, 25-35 grams of emulsified wax stirring 10min is added, 40% alkali lye is configured to NaOH, adjustment system pH is 8.5. Stir and barite regulating density of drilling liquid is added after 30min to 1.20g/cm3Stirring 1 hour, is made this low-density water-based drilling Liquid.
Drilling fluid bentonite, Na used in above-mentioned preparation method2CO3, extracting and cutting agent SZT, amphoteric ion polymer coating agent FA367, fluid loss additive CG810S-T, drilling fluid rheology conditioning agent JHRM, bloom calcium carbonate C-L501, lubricant R-16, brill Well liquid is in the market sale product with solid polymerization alcohol JHGC, emulsified wax, barite, when purchasing strictly by professional standard or Enterprise's mark is examined, and eligible could be used.Specifically it is shown in Table 1.
1 low density water base drilling fluid base stock detail list of table
The drilling shale low density water base drilling fluid that the present invention is provided and current used shale drilling fluid system phase Than having the advantages that：1. this water-base drilling fluid is small compared to oil base drilling fluid environmental pollution；2. there is stronger suppression to seal Stifled ability；3. caving pressure can effectively be reduced；4. temperature convection denaturation influence is smaller；5. cost is relatively low；7. leakage is met easy Processing etc..
Embodiment：
With reference to instantiation, the present invention is further illustrated
Example 1：A kind of compound method for creeping into shale low density water base drilling fluid.
Water temperature is risen to 70 DEG C by the running water for first measuring 1000 grams, and 30 grams are added under low speed 500r/min electric stirrings Drilling fluid bentonite, stirring 10min adds 1.5 grams of Na2CO3It is stirred under 30min, normal temperature and pressure after prehydration 24h, in height 15 grams of SZT stirring 6min, then 2 gram two of the addition under low speed 500r/min electric stirrings are added under fast 8000r/min electric stirrings Property ionomer coating agent FA367 stirring 5min, add 10 grams of fluid loss additive CG810S-T stirring 5min, add 0.2 gram of brill Well liquid rheology modifier JHRM stirs 5min, adds 40 grams of bloom calcium carbonate C-L501 stirring 15min, adds 10 grams of lubricants R-16 stirs 5min, adds 40 grams of drilling fluids and stirs 5min with solid polymerization alcohol JHGC, adds 25 grams of emulsified wax stirrings 10min, be configured to NaOH 40% alkali lye, adjustment system pH is 8.5.Stir and barite regulation drilling fluid is added after 30min Density is to 1.20g/cm3Stirring 1 hour, is made this low density water base drilling fluid.
Example 2：Rolling rate of recovery measure has been carried out to drilling fluid system of the present invention using XGRL-2 types roller heating stove.
2 low-density water base drilling fluid system rolling rate of recovery experimental results of table
Drilling fluid composition Experiment condition Reclaim quality (g) The rate of recovery (%)
Clear water+50g red beds soil 105℃/16h 5.64 11.28
Low-density water base drilling fluid system+50g red beds soil 105℃/16h 47.67 95.34
Note：1) red beds soil is the native landwaste of Sichuan red beds, and shale is appeared appears for long 7 shale, is 6~10 mesh, the rate of recovery To cross the 40 mesh rate of recovery；2) result is 2 experimental data averages in table.
3 low-density water base drilling fluid system linear expansion experimental results of table
Note：1) core is that drilling fluid bentonite (matching somebody with somebody puddled soil) is compressing；2) filtrate is that system heat is rolled after 105 DEG C/16h The filtrate of extrusion；3) result is 2 experimental data averages in table.
From table 2, the rolling rate of recovery of the table 3 shale low density water base drilling fluid and linear expansion rate experiment, rolling The rate of recovery reaches that more than 95%, 16h linear expansion rates only have 22.56% there is preferably suppression aquation to disperse and dilatancy.
Example 3：Rolled using XGRL-2 type roller heating stoves Continuous Heat, test shale water-base drilling fluid heat endurance effect Really.
4 low-density shale water base drilling fluid system Evaluation of Thermal Stability of table
5 low-density shale water base drilling fluid system temperature resistance merit ratings of table
The system knowable to the thermal stability results of table 4 is glued, cut with filter loss as the increase of rolling time changes little, tool There is good heat endurance.Understand that the low density water base drilling fluid glues under the conditions of 150 DEG C from the temperature resistance capacity experimental of table 5 to cut greatly Amplitude reduction, HTHP dehydrations are increased considerably, but can maintain rheological characteristic, HTHP dehydrations well under the conditions of 120 DEG C, can temperature resistance 120℃。

Claims (2)

1. one kind drilling shale low density water base drilling fluid, it is characterized in that：Prepare the raw materials used component of the drilling fluid and contain Measure and be, its mass unit for gram：
It is 8.5 that sodium hydroxide, which is made into the solution regulation system pH value that mass percentage concentration is 40%, adds barite regulation drilling fluid Density is to 1.20g/cm3。
2. a kind of compound method of drilling fluid as claimed in claim 1, it is characterized in that：1000 grams of running water is first measured by water temperature 70 DEG C are risen to, 30-50 grams of bentonite is added under low speed 500r/min electric stirrings, stirring 10min adds 1.5-2.5 grams Na2CO3It is stirred under 30min, normal temperature and pressure after prehydration 24h, adding 15-20 grams under high speed 8000r/min electric stirrings carries Cut agent SZT stirring 6min, then the 2-5 grams of amphoteric ion polymer coating agent FA367 of addition under low speed 500r/min electric stirrings 5min is stirred, 10-15 grams of fluid loss additive CG810S-T stirring 5min is added, adds 0.2-1 grams of drilling fluid rheology conditioning agent JHRM stirs 5min, adds 40-60 grams of bloom calcium carbonate C-L501 stirring 15min, adds 10-30 grams of lubricant R-16 stirring 5min, adds 40-60 grams of drilling fluid and stirs 5min with solid polymerization alcohol JHGC, adds 25-35 grams of emulsified wax stirring 10min, 40% alkali lye is configured to NaOH, adjustment system pH is stirred for 8.5. and added barite regulating density of drilling liquid extremely after 30min 1.20g/cm31h is stirred, this low density water base drilling fluid is made.
CN201410850834.1A 2014-12-31 2014-12-31 One kind drilling shale low density water base drilling fluid Active CN104479649B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410850834.1A CN104479649B (en) 2014-12-31 2014-12-31 One kind drilling shale low density water base drilling fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410850834.1A CN104479649B (en) 2014-12-31 2014-12-31 One kind drilling shale low density water base drilling fluid

Publications (2)

Publication Number Publication Date
CN104479649A CN104479649A (en) 2015-04-01
CN104479649B true CN104479649B (en) 2017-09-05

Family

ID=52754262

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410850834.1A Active CN104479649B (en) 2014-12-31 2014-12-31 One kind drilling shale low density water base drilling fluid

Country Status (1)

Country Link
CN (1) CN104479649B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105176503A (en) * 2015-09-15 2015-12-23 西南石油大学 Cationic polymer water-based drilling fluid for drilling shale
CN105733528B (en) * 2016-03-11 2018-06-22 西南石油大学 A kind of drilling shale low-density fluorescence drilling fluid
CN105694829B (en) * 2016-03-14 2018-10-26 西南石油大学 A kind of low frictional resistance drilling fluid of drilling shale
CN106634900B (en) * 2016-10-10 2019-03-26 西南石油大学 A kind of shale strong rejection capability nanometer closure water-base drilling fluid
CN110016326A (en) * 2018-01-09 2019-07-16 中石化石油工程技术服务有限公司 A kind of low-activity alcohol base drilling fluid and its preparation method
CN108251086A (en) * 2018-02-08 2018-07-06 西南石油大学 A kind of water-base drilling fluid suitable for Changning Weiyuan area
CN108518216B (en) * 2018-03-12 2019-03-05 西南石油大学 A kind of plugging effect evaluation method of low slit low permeability formation
CN108517201A (en) * 2018-03-28 2018-09-11 方建波 A kind of preparation method of the high compound tackifier of anticalcium type
CN109233763B (en) * 2018-10-26 2020-01-17 中国地质大学（武汉） Drilling fluid for forming hole in micro pile and preparation method thereof
CN110746945A (en) * 2019-11-18 2020-02-04 廊坊庆兴化工有限公司 Filtrate reducer modified polysaccharide for drilling fluid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102391843A (en) * 2011-12-01 2012-03-28 西南石油大学 Potassium metasilicate polymeric alcohol water base drilling fluid
CN102504773A (en) * 2011-11-15 2012-06-20 西南石油大学 Saturated salt water drilling fluid for deep wells and extra-deep wells
CN102863947A (en) * 2012-09-30 2013-01-09 中国石油集团西部钻探工程有限公司 Strong-inhibition strong-blocking drilling fluid
CN103382385A (en) * 2013-07-31 2013-11-06 中国石油集团西部钻探工程有限公司 Methylglucoside polyamine drilling fluid and preparation process thereof
CN103725272A (en) * 2014-01-16 2014-04-16 中国地质大学（武汉） Water-based drilling fluid for stabilizing shale

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8623790B2 (en) * 2010-12-21 2014-01-07 Newpark Drilling Fluids Llc Method of drilling a subterranean well with crosslinked polyacrylic acid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102504773A (en) * 2011-11-15 2012-06-20 西南石油大学 Saturated salt water drilling fluid for deep wells and extra-deep wells
CN102391843A (en) * 2011-12-01 2012-03-28 西南石油大学 Potassium metasilicate polymeric alcohol water base drilling fluid
CN102863947A (en) * 2012-09-30 2013-01-09 中国石油集团西部钻探工程有限公司 Strong-inhibition strong-blocking drilling fluid
CN103382385A (en) * 2013-07-31 2013-11-06 中国石油集团西部钻探工程有限公司 Methylglucoside polyamine drilling fluid and preparation process thereof
CN103725272A (en) * 2014-01-16 2014-04-16 中国地质大学（武汉） Water-based drilling fluid for stabilizing shale

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
页岩水平井斜井段强抑制强封堵水基钻井液技术;何振奎;《钻井液与完井液》;20130331;第30卷(第2期);第43-46页 *

Also Published As

Publication number Publication date
CN104479649A (en) 2015-04-01

Similar Documents

Publication Publication Date Title
CN104479649B (en) One kind drilling shale low density water base drilling fluid
CN104592960B (en) A kind of both sexes potassium base polymeric alcohol water-base drilling fluid for creeping into shale
CN106833564B (en) A kind of water-base drilling fluid and its application suitable for shale gas long well section horizontal well
CN103160259B (en) The water-base drilling fluid of anti-255 DEG C of ultrahigh-temperature and construction technology thereof
CN108546548B (en) Deepwater water-based drilling fluid and application thereof
CN105860942A (en) Well wall film formation anti-sloughing drilling fluid
CN106634900B (en) A kind of shale strong rejection capability nanometer closure water-base drilling fluid
CN105255460A (en) Water-based drilling fluid suitable for shale gas development
CN108373910B (en) A kind of HL-FFQH environmental protection drilling fluid system and preparation method thereof
CN105038737A (en) Strong-inhibition anticaving drilling fluid and application thereof
CN100584920C (en) Sea water silicate drilling fluids
CN105838344A (en) High-temperature-resistance salt water drilling fluid for drilling shale
CN107057662A (en) A kind of water-base drilling fluid sealing agent and its preparation method and application
CN105713583A (en) Elastic micro-sphere anti-collapse drilling fluid
CN101948679B (en) A kind of Intelligent reservoir drilling completion fluid system and preparation method thereof
CN105733528B (en) A kind of drilling shale low-density fluorescence drilling fluid
CN103952128B (en) It is applicable to the Weak Gels Solid Free water-base drilling fluid of extended reach well, horizontal well
CN105400501A (en) Drilling fluid with strong wall protecting property for narrow-density windows
CN105694829B (en) A kind of low frictional resistance drilling fluid of drilling shale
CN106543988B (en) A kind of drilling shale filtrate reducing caving control drilling fluid
US11118094B2 (en) Compositions and methods of use of water-based drilling fluids with increased thermal stability
CN105733527A (en) High-density drilling fluid densified with hausmannite powder
CN105176503A (en) Cationic polymer water-based drilling fluid for drilling shale
CN101638576B (en) Shielding and temporary plugging gelling agent for drilling fluid and production method and use method thereof
CN109021944B (en) Oil layer protective agent

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant