CN105863626A - Evaluation method for physical and chemical action of drilling fluid and shale formation - Google Patents
Evaluation method for physical and chemical action of drilling fluid and shale formation Download PDFInfo
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- CN105863626A CN105863626A CN201610303368.4A CN201610303368A CN105863626A CN 105863626 A CN105863626 A CN 105863626A CN 201610303368 A CN201610303368 A CN 201610303368A CN 105863626 A CN105863626 A CN 105863626A
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- core
- drilling fluid
- mud shale
- evaluation method
- interval transit
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- 238000005553 drilling Methods 0.000 title claims abstract description 34
- 239000012530 fluid Substances 0.000 title claims abstract description 34
- 238000011156 evaluation Methods 0.000 title claims abstract description 18
- 230000015572 biosynthetic process Effects 0.000 title abstract description 9
- 239000000126 substance Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000036571 hydration Effects 0.000 claims abstract description 14
- 238000006703 hydration reaction Methods 0.000 claims abstract description 14
- 238000005065 mining Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000010521 absorption reaction Methods 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims description 23
- 239000000523 sample Substances 0.000 claims description 16
- 230000002745 absorbent Effects 0.000 claims description 14
- 239000002250 absorbent Substances 0.000 claims description 14
- 230000002925 chemical effect Effects 0.000 claims description 14
- 230000000704 physical effect Effects 0.000 claims description 14
- 239000011435 rock Substances 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 5
- 230000009545 invasion Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000001419 dependent effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims 1
- 239000003208 petroleum Substances 0.000 abstract 2
- 239000002002 slurry Substances 0.000 abstract 1
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000012163 sequencing technique Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/005—Testing the nature of borehole walls or the formation by using drilling mud or cutting data
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses an evaluation method for the physical and chemical action of a drilling fluid and a shale formation, belongs to the technical field of petroleum and gas drilling, and relates to the technical field of petroleum and gas drilling well wall stability and mining geology. The method mainly comprises the following steps that shale in a mine field is observed and described, and a shale core is prepared and screened; the interval transit time and the resistivity of the shale core at the different water absorption time points are tested; the hydration strength of the shale is evaluated according to the interval transit time of the shale core at the different water absorption time points; the hydration speed of the shale is evaluated according to the changing condition of the resistivity of the shale core at the different water absorption time points. According to the evaluation method, operation is convenient, results are accurate and reliable, and the hydration characters of the shale can be quantitatively evaluated to provide a basis for adjusting the density of drilling fluid slurry.
Description
Technical field
The invention belongs to oil-gas drilling technical field, relate to oil and gas well drilling wellbore stability, mining industry geological technique field.
Background technology
About drilling fluid with the evaluation of the interphase interaction of mud shale stratum in tradition drilling applications a lot of ripe methods and index,
Such as linear expansion rate, roll the rate of recovery etc..But these methods and index are all mainly performance and sign mud shale and drilling fluid is mutual
The end-state of effect or result, lack the reflection of formation rock internal dynamic change procedure during Thermodynamic parameters.In drilling well
In liquid and mud shale stratum contact process, these methods and index all can not reflect that drilling fluid affects speed to stratum and inside thereof
And intensity, also lack comparability between Lab-evaluation result and the actual application of mining site simultaneously.One side is the invention provides for this
Method goes to study between shale hydration dynamic changing process and the dynamic changing process of the petrophysical parameter such as interval transit time, resistivity
Relation, to realize scene and can measure, petrophysical parameter and the immeasurability aquation speed such as the resistivity easily measured, interval transit time
Conversion between the parameters such as degree, aquation intensity, foundation can be measured by mining site, easily be measured petrophysical parameter acquisition immeasurability ginseng
The method of number and approach.
Summary of the invention
It is an object of the invention to provide the evaluation method of a kind of drilling fluid and mud shale stratum physical and chemical effect so that the rock that mining site is measured
Physical parameter more meets engineering demand.
The technical solution adopted for the present invention to solve the technical problems is:
The first step, carries out observing describing, prepares and screen core sample mining site mud shale；
Second step, the core under the conditions of formation testing is in the interval transit time of different absorbent time points and resistivity；
3rd step, according to the interval transit time of core under different absorbent time points, evaluates the aquation intensity of mud shale；
4th step, according to the change in resistance situation of core under different absorbent time points, evaluates the hydration rate of mud shale；
5th step, changes core sample, repeats the 3rd step and the 4th step, at least repeats 3 tests.
In the described first step, the mud shale fetching mining site is described, and observes its layer of reason developmental state, uses air bit to take
Core, coring direction is in a certain angle with bed plane normal direction, and records this angle；The core two ends drilled through are cut flat with and ensures two
End face is vertical with core axis, is then numbered；Choose the core of complete appearance and measure its interval transit time, during according to sound wave
Core is screened by difference, and the core filtering out interval transit time value close is standby.
In described second step, it is respectively mounted 1 axial displacement passes at rock sample and fluid contact jaw and the axis direction after contacting along fluid
Sensor and 4 radial displacement transducers, for detecting the axially and radially dependent variable after core contacts with fluid, 4 radial direction positions
Displacement sensor is respectively 10mm, 30mm, 50mm and 90mm with the distance of rock sample and fluid inlet end, passes laying radial displacement
The position of sensor has been laid 4 the most simultaneously and has been measured electrode (R1, R2, R3, R4) for detecting the change of core resistivity, sound
Ripple probe is individually placed to core end face for monitoring the change of core sound wave, installs gauge line for measuring the suction of core at arrival end
The water yield.
In described second step, drilling fluid invades rock core from arrival end, uses the gauge line of arrival end to measure the intrusion volume of drilling fluid, simultaneously
The interval transit time of test core, and the radial strain amount of core and resistivity, and each position of real time record core axially and
Radial strain amount, resistivity, interval transit time and mud filtrate invasion amount.
In described 3rd step, under the different absorbent time point of test, the interval transit time of core, evaluates aquation according to the core original acoustic wave time difference strong
Degree, its expression formula is:
In formula: R aquation intensity, %；AcsFor the interval transit time under a certain absorbent time point, um/s；AcoOriginal interval transit time,
um/s。
In described 4th step, the time changed according to core diverse location resistivity, calculating hydration rate, its expression formula is:
In formula: VhFor hydration rate, m/h；ΔLnIt is respectively four to measure in electrode arbitrarily with the distance of an electrode to arrival end；Tn
The time that at this electrode, core resistivity changes.
The technical scheme that the present invention provides provides the benefit that:
The present invention is directed to drilling fluid and mud shale stratum physical and chemical effect problem, establish based on mining site resistivity-acoustic travel time logging response system
The original state mud shale stratum acoustic travel time logging response that meter relation and indoor sound wave aquation dynamic monitoring combine with mining site drilling time curve
Inversion method, the prediction for drill column original state mud shale stratum rock strength and caving pressure has established method basis, for drilling well
The optimization optimization of mode provides foundation.
Accompanying drawing explanation
Fig. 1 is the implementing procedure frame diagram of drilling fluid of the present invention and the evaluation method of mud shale stratum physical and chemical effect；
Fig. 2 is different from the embodiment illustrated in fig. 1 of the evaluation method of mud shale stratum physical and chemical effect according to not invention drilling fluid of the present invention
The aquation intensity of mud shale under time point；
Fig. 3 is different from the embodiment illustrated in fig. 1 of the evaluation method of mud shale stratum physical and chemical effect according to not invention drilling fluid of the present invention
The mud shale resistivity that time point bottom electrode R4 records.
Detailed description of the invention
In order to be further understood that the summary of the invention of the present invention, elaborate the present invention below in conjunction with specific embodiment.
Embodiment:
As it is shown in figure 1, the evaluation method of a kind of drilling fluid and mud shale stratum physical and chemical effect, it comprises the following steps according to sequencing:
The first step, carries out observing describing, prepares and screen core sample mining site mud shale；
Second step, the core under the conditions of formation testing is in the interval transit time of different absorbent time points and resistivity；
3rd step, according to the interval transit time of core under different absorbent time points, evaluates the aquation intensity of mud shale；
4th step, according to the change in resistance situation of core under different absorbent time points, evaluates the hydration rate of mud shale；
In the first step, observe mud shale and determine the trend of its bed plane, using air corning machine to drill through along vertical stratification face normal direction
Core, is polished flat two end faces of core and ensures that two end faces are all perpendicular to core axis.In the present embodiment, 5 are drilled through
Individual core sample, it is cylindrically shaped, diameter 25mm, its a length of 50mm after grinding process.Measure the rock under original state
Core interval transit time, chooses the close core of wherein three interval transit times as test specimen.
In second step, formation condition includes the conditions such as formation temperature, stratum confined pressure and formation pore pressure.Utilize aquation dynamic measuring instrument
Test core, in interval transit time, resistivity and the water absorption of different absorbent time points, comprises the following steps according to sequencing:
(1) being positioned in rock core fastener by core, two ends pressure head is hand-tight, and arrival end connects drilling fluid suction pipe and ensures drilling fluid energy
Invade core.
(2) in rock core fastener, inject hydraulic oil by confined pressure booster, and the confined pressure that core is born is stratum confined pressure.This
In embodiment, confined pressure grease separation hydraulic oil used, applying confined pressure to 35MPa.
(3) core sample and confined pressure oil are warming up to formation in situ state temperature.In the present embodiment, temperature is increased to 75 DEG C.
(4) use pressure head that core is applied axial compressive force.In the present embodiment, axial compressive force is 1.5MPa.
(5) sonic test system, resistivity test system and displacement test system are opened, the interval transit time of real-time testing core, no
Resistivity at co-located and radial strain and axial strain.
(6) open drilling fluid suction pipe control valve, allow mud filtrate invasion core.Record mud filtrate invasion time point and intrusion volume, one section
After time, stop test, close closed system, derive data.In the present embodiment, test period is 14 days.
(7) changing core sample, repetition step (1), to step (6), carries out replica test.In the present embodiment, repeat three times
Test.
In 3rd step, according to the interval transit time of each time point testing the mud filtrate invasion time point, intrusion volume and the correspondence that draw,
Evaluate aquation intensity.In the present embodiment, core different time points aquation strength test results as shown in Figure 2.
In 4th step, the time that each four the measurement electrode institute measuring resistance rates drawn according to test change, i.e. draw hydration rate according to expression formula.
In the present embodiment, for accurate description hydration rate, the resistivity (R4) of electrode measurement at terminal position is used to calculate aquation speed
Degree.As it can be seen, resistivity is with the Changing Pattern of time of contact, change time and electrode R4 according to resistivity are to entrance
Distance.Core 1, core 2 and core 3 calculate hydration rate and are respectively 0.119cm/h, 0.132cm/h and 0.100cm/h.
Claims (7)
1. a drilling fluid and the evaluation method of mud shale stratum physical and chemical effect, it is characterised in that the method comprises the following steps:
The first step, carries out observing describing, prepares and screen core sample mining site mud shale；
Second step, test core is in the interval transit time of different absorbent time points and resistivity；
3rd step, according to the interval transit time of core under different absorbent time points, evaluates the aquation intensity of mud shale；
4th step, according to the change in resistance situation of core under different absorbent time points, evaluates the hydration rate of mud shale；
5th step, changes core sample, repeats the 3rd step and the 4th step, at least repeats 3 tests.
A kind of drilling fluid the most according to claim 1 and the evaluation method of mud shale stratum physical and chemical effect, it is characterised in that described
In the first step, mud shale is grown bed plane, and the core sample drilled through is that cylinder and core axis press from both sides with bed plane normal direction
Angle is between 0 °～90 °, and core end face polishes, and two end faces are perpendicular to core axis.
A kind of drilling fluid the most according to claim 1 and the evaluation method of mud shale stratum physical and chemical effect, it is characterised in that described
In the first step, the interval transit time under the conditions of test core sample reset condition, the core conduct that then screening interval transit time value is close
Test specimen.
A kind of drilling fluid the most according to claim 1 and the evaluation method of mud shale stratum physical and chemical effect, it is characterised in that described
In second step, it is respectively mounted 1 shaft position sensor at rock sample and fluid contact jaw and the axis direction after contacting along fluid
With 4 radial displacement transducers, for detecting the axially and radially dependent variable after core contacts with fluid, 4 radial displacements pass
Sensor is respectively 10mm, 30mm, 50mm and 90mm with the distance of rock sample and fluid contact jaw, passes laying radial displacement
The position of sensor has been laid 4 measurements electrode (R1, R2, R3, R4) the most simultaneously and has been used for detecting the change of core resistivity,
Sonic probe is individually placed to core end face for monitoring the change of core sound wave, installs gauge line for measuring core at arrival end
Water absorption.
A kind of drilling fluid the most according to claim 1 and the evaluation method of mud shale stratum physical and chemical effect, it is characterised in that described
Second step process is: drilling fluid invades rock core from arrival end, and each position of real time record core axially and radially dependent variable,
Resistivity, interval transit time and mud filtrate invasion amount.
A kind of drilling fluid the most according to claim 1 and the evaluation method of mud shale stratum physical and chemical effect, it is characterised in that described
In 3rd step, the interval transit time of core under the different absorbent time point of test, according to the sound wave after the core original acoustic wave time difference and water suction
The time difference evaluates aquation intensity, and its expression formula is:
In formula: R aquation intensity, %；AcsFor the interval transit time under a certain absorbent time point, um/s；AcoOriginal interval transit time,
um/s。
A kind of drilling fluid the most according to claim 1 and the evaluation method of mud shale stratum physical and chemical effect, it is characterised in that described
In 4th step, the time changed according to diverse location resistivity, calculating hydration rate, its expression formula is:
In formula: VhFor hydration rate, cm/h；ΔLnIt is respectively four to measure in electrode arbitrarily with the distance of an electrode to arrival end, cm；
TnThe time that at this electrode, core resistivity changes, h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610303368.4A CN105863626A (en) | 2016-05-10 | 2016-05-10 | Evaluation method for physical and chemical action of drilling fluid and shale formation |
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| CN201610303368.4A CN105863626A (en) | 2016-05-10 | 2016-05-10 | Evaluation method for physical and chemical action of drilling fluid and shale formation |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872671A (en) * | 2017-05-02 | 2017-06-20 | 西南石油大学 | A kind of device based on acoustics Yu mechanics quantitative assessment Shale Hydration |
| CN108593771A (en) * | 2018-04-27 | 2018-09-28 | 西南石油大学 | Damage strength computational methods and damage strength computing device |
| CN109342187A (en) * | 2018-09-30 | 2019-02-15 | 西南石油大学 | A kind of brill Fissile Shale drilling fluid system inhibition evaluation method |
| CN110514524A (en) * | 2019-06-25 | 2019-11-29 | 中国石油集团川庆钻探工程有限公司 | A kind of full diameter shale reservoir rock core stratification seam aquation intensity experiment evaluation method |
| CN111855484A (en) * | 2020-07-30 | 2020-10-30 | 西南石油大学 | Method for evaluating well wall capability of drilling fluid for stabilizing shale formation based on acoustoelectric response |
| CN113958315A (en) * | 2021-06-16 | 2022-01-21 | 西南石油大学 | Shale stratum collapse pressure prediction method based on self-absorption-constitutive model |
| CN117783289A (en) * | 2024-02-26 | 2024-03-29 | 中国地质大学（北京） | Method and device for in-situ nondestructive detection of rock free water absorption by utilizing sound wave speed |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1256539A (en) * | 1968-12-06 | 1971-12-08 | ||
| US20090036330A1 (en) * | 2004-04-24 | 2009-02-05 | Halliburton Energy Services, Inc. | Inhibitive water-based drilling fluid system and method for drilling sands and other water-sensitive formations |
| CN104675395A (en) * | 2015-02-12 | 2015-06-03 | 中国石油大学(北京) | Evaluation method for hydration characteristics of layered hard brittle mud shale |
-
2016
- 2016-05-10 CN CN201610303368.4A patent/CN105863626A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1256539A (en) * | 1968-12-06 | 1971-12-08 | ||
| US20090036330A1 (en) * | 2004-04-24 | 2009-02-05 | Halliburton Energy Services, Inc. | Inhibitive water-based drilling fluid system and method for drilling sands and other water-sensitive formations |
| CN104675395A (en) * | 2015-02-12 | 2015-06-03 | 中国石油大学(北京) | Evaluation method for hydration characteristics of layered hard brittle mud shale |
Non-Patent Citations (3)
| Title |
|---|
| XIANGJUN LIU等: "Experimental Investigation of the Effect of Drilling-Fluids/Clay-Minerals Interaction on Resistivity, Acoustic velocity, and Log-Derived Porosity", 《THE 2000 SPE INTERNATIONAL SYMPOSIUM ON FORMATION DAMAGE CONTROL》 * |
| 王伟男等: "《泥质砂岩的物理性质以及测井应用》", 31 August 2004 * |
| 罗超: "硬脆性页岩井壁稳定性水化作用影响研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872671A (en) * | 2017-05-02 | 2017-06-20 | 西南石油大学 | A kind of device based on acoustics Yu mechanics quantitative assessment Shale Hydration |
| CN108593771A (en) * | 2018-04-27 | 2018-09-28 | 西南石油大学 | Damage strength computational methods and damage strength computing device |
| CN109342187A (en) * | 2018-09-30 | 2019-02-15 | 西南石油大学 | A kind of brill Fissile Shale drilling fluid system inhibition evaluation method |
| CN110514524A (en) * | 2019-06-25 | 2019-11-29 | 中国石油集团川庆钻探工程有限公司 | A kind of full diameter shale reservoir rock core stratification seam aquation intensity experiment evaluation method |
| CN110514524B (en) * | 2019-06-25 | 2022-03-29 | 中国石油集团川庆钻探工程有限公司 | Experimental evaluation method for full-diameter shale reservoir core bedding fracture hydration strength |
| CN111855484A (en) * | 2020-07-30 | 2020-10-30 | 西南石油大学 | Method for evaluating well wall capability of drilling fluid for stabilizing shale formation based on acoustoelectric response |
| CN113958315A (en) * | 2021-06-16 | 2022-01-21 | 西南石油大学 | Shale stratum collapse pressure prediction method based on self-absorption-constitutive model |
| CN117783289A (en) * | 2024-02-26 | 2024-03-29 | 中国地质大学（北京） | Method and device for in-situ nondestructive detection of rock free water absorption by utilizing sound wave speed |
| CN117783289B (en) * | 2024-02-26 | 2024-05-10 | 中国地质大学（北京） | Method and device for in-situ nondestructive detection of rock free water absorption by utilizing sound wave speed |
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Application publication date: 20160817 |