CN104295249A - Method for estimating usage of wall protection mud for flowing water sand layer pipeline drilling and mud formula - Google Patents

Method for estimating usage of wall protection mud for flowing water sand layer pipeline drilling and mud formula Download PDF

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Publication number
CN104295249A
CN104295249A CN201410476541.1A CN201410476541A CN104295249A CN 104295249 A CN104295249 A CN 104295249A CN 201410476541 A CN201410476541 A CN 201410476541A CN 104295249 A CN104295249 A CN 104295249A
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CN
China
Prior art keywords
mud
formula
soil
drilling
usage
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.)
Pending
Application number
CN201410476541.1A
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Chinese (zh)
Inventor
陈志龙
甘文彪
朱丹
覃轲
连丽勇
陈焕旭
周亮
唐学深
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SHENZHEN JIANYE BUILDING ENGINEERING Co Ltd
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SHENZHEN JIANYE BUILDING ENGINEERING Co Ltd
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Priority to CN201410476541.1A priority Critical patent/CN104295249A/en
Publication of CN104295249A publication Critical patent/CN104295249A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • 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
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/08—Fiber-containing well treatment fluids

Abstract

The invention discloses a method for estimating the usage of wall protection mud for flowing water sand layer pipeline drilling and a mud formula. By the adoption of the method and the mud formula, the technical problems of mud dilution and hole collapse during construction are solved, drilling efficiency is improved, and the usage of mud is calculated. The mud usage estimating method comprises the steps of (1) determining the diameter D' of a reamed hole, wherein D'=K*D; (2) determining the theoretical usage Q1 of mud, wherein Q1=K1*V; (3) determining the mud consumption coefficient K2; (4) determining the usage Q of mud, wherein Q=Q1*K2. The mud formula comprises 1000 kg of water, 60-75 kg of salinity-resisting bentonite (THR), 0.8-1.2 kg of additives (SurePac) and 0.8-1.2 l of polyanion cellosilk (DrillGel). The method and the mud formula have the advantages that drilling mud is prepared quantitatively, mud waste is reduced greatly, and construction cost is reduced. By the adoption of the mud formula, during drilling, mud is not diluted easily after flowing water invasion, and the problem of hole collapse is well solved and drilling efficiency is improved with the mud.

Description

A kind of dynamic water layer of sand pipeline drilling construction slurry coat method consumption evaluation method and mud prescription thereof
Art
The present invention relates to drilling construction field, particularly a kind of dynamic water layer of sand pipeline drilling construction slurry coat method consumption evaluation method and mud prescription thereof.
Background technology
Mud is very important in horizontal orientation boring pipeline construction, and along with boring pilot hole, reaming, hole flushing, returning the overall process of hauling pipe construction, old friends often liken mud the blood that orientation drills to.And coastal area pipe laying engineering geological conditions is very complicated, mud (brill liquid) performance requirement is high, in construction must according to actual formation condition preparation meet the requirements, the high performance special mud of high-quality, therefore the preparation of mud be construction emphasis.Use the mud prescription of appropriate design, the efficiency of whole engineering will be improved, save engineering cost the most at last, how to utilize configuration mud, utilize the performance of mud, make mud be not easy passive water immerse and dilute, and mud can well solving hole landslide and improve the technical problems such as drilling efficiency, also there is above-mentioned defect in prior art.
Goal of the invention
The mud existed for overcoming prior art to be holed pipeline construction at horizontal orientation, particularly in water layer of sand pipeline boring work progress, the easy passive water of mud immerses and dilutes, and mud caves in hole and improves the technological deficiency of drilling efficiency without useful help, computation of mud consumption reduces construction cost simultaneously, the open a kind of dynamic water layer of sand pipeline drilling construction slurry coat method consumption evaluation method of the present invention and mud prescription thereof.
The method that the present invention realizes starching the employing of consumption evaluation method goal of the invention is:
A kind of dynamic water layer of sand pipeline drilling construction slurry coat method consumption evaluation method, these computational methods comprise the following steps:
(1). determine back counter bore diameter: D '=K × D;
Wherein: the brill of D ' pipe laying returns counter bore diameter, D-outer diameter tube; K-expending die, the span of K is the selection principle of 1.2-1.6, K: select according to soil condition, in clayed soil, K selects lower limit, at loose sandy strata capping;
(2). determine mud theoretical amount: Q 1=K 1× V;
Wherein: Q 1-mud theoretical amount; V-borehole volume, V=π × r 2× h; K 1-use level coefficient, the span of K is at 2-6, K 1selection principle: according to soil condition select, in clayed soil, K selects lower limit, chooses limit at loose sandy strata;
(3). determine mud waste COEFFICIENT K 2, K 2span at 0.2-0.4, K 1selection principle: according to being the management condition such as length, mud veclamation rate;
(4). determine slurry consumption: Q=Q 1× K 2
The method that the present invention realizes the employing of mud prescription goal of the invention is: a kind of dynamic water layer of sand pipeline drilling construction slurry coat method formula:
(1). this formula material comprises; Water, anti-salt swell soil (THR), Admixture (Sure Pac) and polyanion fibre (Drill Gel);
(2). this formula material configuration proportion is: 1000 kilograms, water, anti-salt swell soil (THR) 60-75 kilogram, Admixture (Sure Pac) 0.8-1.2 kilogram, polyanion fibre (Drill Gel) 0.8-1.2 liter.
The invention has the beneficial effects as follows that quantitative configuration drilling slurry reduces the waste of mud greatly, reduce construction cost.The formula of mud, makes this mud in drilling construction process, and mud is not easy passive water and immerses and dilute, and mud can well solve hole landslide and improve drilling efficiency.
The present invention is described in detail below.
Detailed description of the invention
A kind of dynamic water layer of sand pipeline drilling construction slurry coat method consumption evaluation method, these computational methods comprise the following steps:
(1). determine back counter bore diameter: D '=K × D;
Wherein: the brill of D ' pipe laying returns counter bore diameter, D-outer diameter tube; K-expending die, the span of K is the selection principle of 1.2-1.6, K: select according to soil condition, in clayed soil, K selects lower limit, at loose sandy strata capping;
(2). determine mud theoretical amount: Q 1=K 1× V;
Wherein: Q 1-mud theoretical amount; V-borehole volume, V=π × r 2× h; K 1-use level coefficient, the span of K is at 2-6, K 1selection principle: according to soil condition select, in clayed soil, K selects lower limit, chooses limit at loose sandy strata;
(3). determine mud waste COEFFICIENT K 2, K 2span at 0.2-0.4, K 1selection principle: according to being the management condition such as length, mud veclamation rate;
(4). determine slurry consumption: Q=Q 1× K 2.
By the quantitative use of above-mentioned mud, ensureing, under the prerequisite that construction needs, to reduce the waste of mud, greatly reduce construction cost, the scientific quantitative analysis management of phenomenon construction.
A dynamic water layer of sand pipeline drilling construction slurry coat method formula,
(1). this formula material comprises; Water, anti-salt swell soil (THR), Admixture (Sure Pac) and polyanion fibre (Drill Gel);
(2). this formula material configuration proportion is: 1000 kilograms, water, anti-salt swell soil (THR) 60-75 kilogram, Admixture (Sure Pac) 0.8-1.2 kilogram, polyanion fibre (Drill Gel) 0.8-1.2 liter.
In the embodiment of the present invention, mud prescription is:
This formula material configuration proportion is: 1000 kilograms, water, anti-salt swell soil (THR) 70 kilograms, Admixture (Sure Pac) 1 kilogram, polyanion fibre (Drill Gel) 1 liter.
In the embodiment of the present invention mud configuration complete after viscosity be: bore the pilot hole stage, mud viscosity is within the scope of 60 ~ 65S; Stage mud viscosity is dragged to control within the scope of 65 ~ 75S in pre-reaming with returning.
Below in conjunction with embodiment of the present invention Project case
One, construction technology
1, preparation of construction
The preparations such as water flowing, energising, path, mud supply pipe and recovery tube layout are carried out at 1.1 scenes in advance;
Service kit and equipment before 1.2 constructions the test running of finishing equipment.
1.3 use material producer need provide product certificate and performance indications, former material first samples censorship after marching into the arena, and can use after indices is qualified.
2, mud circulation pond
Mud circulation pond or circulating tank are set according to on-site actual situations, generally form by three and return pond, sedimentation basin and supply stock tank.If slip agitating tank (tank) size is long 3m × wide 1m × high 1.5m, if position, pond should ensure that guiding pipe racks bores liquid penetrating angle 8 degree of-15 degree.For the mud produced in work progress, transport in time, in order to avoid pollute road surface.
3, the construction method of slurrying and key points for operation
3.1 estimation slurry consumption
3.2 configuration mud
For hole 1 meter dark: diameter is the pipe works of 500mm, return counter bore diameter D '=1.6 × 500=800mm can meet hauling pipe requirement.Every meter of borehole volume V=3.14 × 0.4 2× 1=0.5m 3, the COEFFICIENT K of loose sandy strata is 6, then slurry consumption Q=6 × 0.5=3m 3.
3.2 slurrying
Whipping process: after first adding 30% water in stirring pool, slowly add slurrying swell soil and Admixture, when accomplishing that stirring pool inner water fills it up with, swell soil, Admixture all add by mud match ratio, stir 10 ~ 15min, can use.
The viscosity of mud controls should according to through section strata condition, and in the brill pilot hole stage, mud viscosity controls within the scope of 60 ~ 65S; Dragging stage mud viscosity to improve 5 ~ 10S in pre-reaming with returning, controlling within the scope of 65 ~ 75S.
The major function of 3.3 mud
1) carry and suspend drilling cuttings.Rock (soil) bits broken for drill bit (reamer) are taken out of eyelet from hole, keeps hole easy to clean.
2) hole wall is stablized.Can penetrate into beyond hole wall periphery 30cm, be combined with medium-sand seam and gravel layer, form rubber shape, set up positive differential pressure inside and outside hole fast, good supporting role is formed to hole wall.
3) cooling and flushing drill bit, (end) rock (soil) bits in clean-out hatch.Also have mud balance can regulate in larger scope, to set up the head of liquid balanced each other with strata pressure, anti-leak-stopping, collapse, the underground complex situations such as card.
4, mud outward transport
The mud returned out during construction adopts special slurry transport truck to transport.Mud car adopts totally enclosed pot type transport vehicle.Transport vehicle establishes stock inlet and plasma discharge mouth at tank deck and bottom.Mud squeezes into tank car by slush pump, after filling, is closed by stock inlet, is transported to appointed place and abandons slurry, is discharged by plasma discharge mouth.The closure of transportation tank car is better, has stopped the pollution in slurry transportation process.
Two, construction key, main points and points for attention
1, strictly prepare mud on request, must fully stir and should use after the abundant aquation of swell soil.
When 2, boring pilot hole, pilot hole must be bored with mud, especially bore profound pilot hole and will make good use of mud.If bore guide hole with clear water or plain mud, moment of torsion increases, and likely twists off drilling rod, loses starter, or causes underground drilling accident.
3, at borehole enlargement by drawing back or return and drag pipe laying, return towing speed degree and slow down, allow in boring husky with mud abundant mixing and emulsifying suspension delivery port, pore-forming is good, returns and drags pipe laying smooth.Return when dragging pipe laying, the pull-back force rate of climb is fast, should strengthen slurry consumption.
4, in boring, find that the boring hole that collapses should increase mud viscosity and concentration, strengthen slurry consumption, stablize hole wall, prevent fault sag.
5, when pipe laying, middle requirement stops boring welded steel pipe, stops boring and does not stop to send mud, send slurry amount to turn down, again spud in pipe laying time, send slurry amount to tune up.
6, adhere to that each use all surveys mud property, and base area qualitative changeization adjusts slurry consumption and formula in time, must the strict indices controlling mud.
7, the mud prepared should avoid the pollution of water and refuse.
8, in work progress, regularly to slurry mixer, slush pump, mud line checks, gets rid of unexpected, prevents mud supply from lacking.
9, the process of discarded slurry and dregs should meet environmental requirement.

Claims (4)

1. a dynamic water layer of sand pipeline drilling construction slurry coat method consumption evaluation method, is characterized in that: these computational methods comprise the following steps:
(1). determine back counter bore diameter: D '=K × D;
Wherein: the brill of D ' pipe laying returns counter bore diameter, D-outer diameter tube; K-expending die, the span of K is the selection principle of 1.2-1.6, K: select according to soil condition, in clayed soil, K selects lower limit, at loose sandy strata capping;
(2). determine mud theoretical amount: Q 1=K 1× V;
Wherein: Q 1-mud theoretical amount; V-borehole volume, V=π × r 2× h; K 1-use level coefficient, the span of K is at 2-6, K 1selection principle: according to soil condition select, in clayed soil, K selects lower limit, chooses limit at loose sandy strata;
(3). determine mud waste COEFFICIENT K 2, K 2span at 0.2-0.4, K 1selection principle: according to being the management condition such as length, mud veclamation rate;
(4). determine slurry consumption: Q=Q 1× K 2.
2. a dynamic water layer of sand pipeline drilling construction slurry coat method formula, is characterized in that:
(1). this formula material comprises; Water, anti-salt swell soil (THR), Admixture (Sure Pac) and polyanion fibre (Drill Gel):
(2). this formula material configuration proportion is: 1000 kilograms, water, anti-salt swell soil (THR) 60-75 kilogram, Admixture (Sure Pac) 0.8-1.2 kilogram, polyanion fibre (Drill Gel) 0.8-1.2 liter.
3. one according to claim 2 moves water layer of sand pipeline drilling construction slurry coat method formula, it is characterized in that: this formula material configuration proportion is: 1000 kilograms, water, anti-salt swell soil (THR) 70 kilograms, Admixture (Sure Pac) 1 kilogram, polyanion fibre (Drill Gel) 1 liter.
4. one according to claim 2 moves water layer of sand pipeline drilling construction slurry coat method formula, it is characterized in that: bore the pilot hole stage, mud viscosity is within the scope of 60 ~ 65S; Stage mud viscosity is dragged to control within the scope of 65 ~ 75S in pre-reaming with returning.
CN201410476541.1A 2014-09-17 2014-09-17 Method for estimating usage of wall protection mud for flowing water sand layer pipeline drilling and mud formula Pending CN104295249A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104860581A (en) * 2015-01-30 2015-08-26 武汉地网非开挖科技有限公司 Bentonite for trenchless horizontal directional crossing construction, and production method thereof
CN108086908A (en) * 2017-12-13 2018-05-29 中国二冶集团有限公司 The application method of mud in the construction of directional drilling crossing river
CN111287177A (en) * 2020-03-03 2020-06-16 中国五冶集团有限公司 Construction method of large-diameter overlong punched cast-in-place pile in dense pebble bed area
CN111302710A (en) * 2020-03-03 2020-06-19 中国五冶集团有限公司 Large-diameter overlong punching slurry in dense pebble bed area
CN114149795A (en) * 2021-11-30 2022-03-08 中铁八局集团第一工程有限公司 Guide hole wall protection slurry

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104860581A (en) * 2015-01-30 2015-08-26 武汉地网非开挖科技有限公司 Bentonite for trenchless horizontal directional crossing construction, and production method thereof
CN108086908A (en) * 2017-12-13 2018-05-29 中国二冶集团有限公司 The application method of mud in the construction of directional drilling crossing river
CN108086908B (en) * 2017-12-13 2020-02-11 中国二冶集团有限公司 Method for using slurry in river channel crossing construction by directional drilling
CN111287177A (en) * 2020-03-03 2020-06-16 中国五冶集团有限公司 Construction method of large-diameter overlong punched cast-in-place pile in dense pebble bed area
CN111302710A (en) * 2020-03-03 2020-06-19 中国五冶集团有限公司 Large-diameter overlong punching slurry in dense pebble bed area
CN114149795A (en) * 2021-11-30 2022-03-08 中铁八局集团第一工程有限公司 Guide hole wall protection slurry

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Application publication date: 20150121