CN113482554A - Test device for researching reinforcing effect of biological mud drilling fluid and use method - Google Patents
Test device for researching reinforcing effect of biological mud drilling fluid and use method Download PDFInfo
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- CN113482554A CN113482554A CN202110763056.2A CN202110763056A CN113482554A CN 113482554 A CN113482554 A CN 113482554A CN 202110763056 A CN202110763056 A CN 202110763056A CN 113482554 A CN113482554 A CN 113482554A
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- grouting
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- 238000005553 drilling Methods 0.000 title claims abstract description 64
- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 239000012530 fluid Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 24
- 230000000694 effects Effects 0.000 claims abstract description 25
- 239000002689 soil Substances 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 18
- 239000002002 slurry Substances 0.000 claims description 17
- 238000007569 slipcasting Methods 0.000 claims description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 6
- 239000004202 carbamide Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- 229940080314 sodium bentonite Drugs 0.000 claims description 5
- 229910000280 sodium bentonite Inorganic materials 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 241000894006 Bacteria Species 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- 108010046334 Urease Proteins 0.000 claims description 3
- 230000033558 biomineral tissue development Effects 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 230000036571 hydration Effects 0.000 claims description 3
- 238000006703 hydration reaction Methods 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000001802 infusion Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000001454 recorded image Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
-
- 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
- E21B47/00—Survey of boreholes or wells
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/002—Survey of boreholes or wells by visual inspection
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a test device for researching the reinforcing effect of biological mud drilling fluid and a using method thereof. The method adopts a fisheye camera and a high-speed camera to visually record the injection permeation directions of different soil sample drilling fluids, and traces the falling track of particles and three-dimensional images of mud retaining walls generated by holes; the adopted grouting pipe is a sleeve-shaped component, and different drilling rod types are simulated through assembly; simulating the condition that different rod pieces generate mud retaining walls through circulating grouting, observing whether the phenomena of well leakage and borehole wall instability occur, and then testing the reinforcing strength around the hole through dismantling the baffle plate to obtain the using effect of the biological mud drilling fluid through a test; different top loads can be applied and their effect on the retaining wall detected.
Description
Technical Field
The invention relates to a test device for researching a reinforcing effect and a using method thereof, in particular to a test device for researching a reinforcing effect of a biological mud drilling fluid and a using method thereof.
Background
In the drilling process, the drilling accidents such as well leakage, drill sticking, borehole wall instability and the like are easy to happen, so that the testing of the effect of the biological mud drilling fluid has very important significance. The accidents in the hole are the main obstacles of drilling construction, the drilling efficiency is low when the accidents in the hole directly result in, the construction period is delayed, the drilling economic cost is increased, drilling construction equipment is damaged, the core taking rate is finally influenced, and a large amount of manpower and material resources are wasted. Aiming at the problems, the research and development of the drilling fluid are of great importance, the drilling fluid can not only clean the well bottom, carry out drilling cuttings through circulation, but also cool a drill bit and a drill column, reduce the abrasion of the drill bit, prolong the service life of the drill bit, balance the pressure on the well wall, form a filter cake to enhance the stability of the well wall, and balance the pressure of a drilling stratum to prevent accidents such as well leakage, blowout and the like, and the performance of the drilling fluid is the key of success or failure of drilling engineering.
The existing well wall simulation device is mainly used for judging the filtration performance and the permeability of drilling fluid, the effect of the drilling fluid on a well wall cannot be monitored in real time, the influence of factors such as different proportions, flow rates, upper structure loads, soil body types and the like on the grouting effect cannot be reflected from the macro scale, the effects of the factors need to be displayed visually, and once the phenomena such as well leakage, well wall instability and the like occur, the proportion of the drilling fluid can be adjusted.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide the test device and the use method for researching the reinforcing effect of the biological mud drilling fluid, which are convenient to observe, simple in structure and easy to operate, so that the test accuracy is improved, and the practicability is high.
The technical scheme is as follows: the biological mud box comprises a biological mud box and a test box, wherein the biological mud box and the test box are connected through a grouting guide pipe and a return pipe to form a circulation loop, a baffle is installed on the side wall of the test box, a load plate is arranged at the top of the test box, a grouting pipe is arranged in the test box, and the grouting pipe is connected with the grouting guide pipe.
And the grouting guide pipe is provided with a liquid pump and a control valve, and the grouting flow rate and flow are adjusted through the control valve, so that the influence of different flow rates on the mud retaining wall effect is simulated.
And the return pipe is provided with a liquid pump, and returns the tested returned slurry to the biological slurry tank to form a circulating device.
The height of the baffle is 5-10cm higher than that of the whole test box, so that slurry return sputtering is prevented, the baffle is removed after the test is finished, and the wall protection strength of slurry generated around the hole wall is detected.
The baffle is connected with the test box through a buckle.
The grouting pipe is a sleeve composed of an inner guide pipe and an outer thick cylinder, wherein the inner guide pipe is connected with the grouting guide pipe.
The top of the load plate is provided with a concave pulp return channel, and a return pipe is arranged in the concave pulp return channel.
A use method of a test device for researching the reinforcing effect of biological mud drilling fluid comprises the following steps:
(1) after the test box is assembled, filling soil of 5-10cm at the bottom, placing the grouting pipe at the groove of the baffle, and embedding a soil sample close to the inner wall of the baffle;
(2) placing the opening of the load plate close to the outer wall of the grouting pipe stably, and then placing the return pipe at a channel where the load plate is arranged;
(3) the grouting guide pipe is connected with an inner guide pipe of the liquid pump, the control valve and the grouting pipe in sequence from the lower part of the biological mud box;
(4) the high-speed camera is placed right in front of the baffle, can shoot the panorama at the hole wall of the grouting pipe, and records the process of hole collapse or particle falling;
(5) before the test is started, the control valve is closed, the jack is placed on the load plate, and the load pressure of the upper load on the hole is controlled;
(6) before the test is started, preparing biological mud drilling fluid;
(7) in the initial stage, a liquid pump at the position of the return pipe is opened, then a liquid pump at the position of the grouting guide pipe is opened, a control valve is opened, the injection flow speed and flow of the biological mud drilling fluid with different proportions are adjusted, and the influence of different flow speeds on the mud retaining wall generation effect is tested;
(8) after grouting, pulling out the grouting pipe, shooting the whole process of pulling out the grouting pipe by a high-speed camera in the whole process, drawing a hole collapse movement track, recording the time required by complete collapse, and comparing the effects of the biological mud drilling fluid with different proportions;
(9) vertically inserting a fisheye camera rod into a hole without complete hole collapse, shooting the shape of the slurry retaining wall and the cementation effect among particles, and drawing a three-dimensional image;
(10) and (3) removing the baffle after the grouting pipe is pulled out for at least 24 hours, detecting the reinforcing effect of the biological mud drilling fluid near the hole, testing the penetration resistance of the generated mud skin, and further testing the reinforcing range of the biological mud drilling fluid.
The preparation method of the biological mud drilling fluid in the step (6) comprises the following steps: mixing urease bacteria with the activity of 7-15 mM urea hydrolysed/min, 0.3-2.0 mol/L mixed solution of urea and calcium chloride for mineralization, preparing a biomineral containing mineralized hydration products, preparing 1-20 parts of biomineral, 1-30 parts of sodium bentonite and 1-10 parts of water glass according to specific working conditions, and mixing to prepare the biological mud drilling fluid.
Has the advantages that: the method adopts a fisheye camera and a high-speed camera to visually record the injection permeation directions of different soil sample drilling fluids, and traces the falling track of particles and three-dimensional images of mud retaining walls generated by holes; the adopted grouting pipe is a sleeve-shaped component, and different drilling rod types are simulated through assembly; simulating the condition that different rod pieces generate mud retaining walls through circulating grouting, observing whether the phenomena of well leakage and borehole wall instability occur, and then testing the reinforcing strength around the hole through dismantling the baffle plate to obtain the using effect of the biological mud drilling fluid through a test; different top loads can be applied and their effect on the retaining wall detected.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a front view of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in figures 1 and 2, the biological mud tank comprises a biological mud tank 1 and a test tank 8, wherein the biological mud tank 1 and the test tank 8 are connected through a grouting guide pipe 5 and a return pipe 11 to form a circulation loop, wherein the grouting guide pipe 5 is provided with an infusion pump 2 and a control valve 3, and the return pipe 11 is provided with the infusion pump 2. Baffle 6 is installed to 8 lateral walls of proof box, load board 7 is installed at the top, load board 7 designs to open type and sets up the spill and return the thick liquid passageway, places at 8 tops of proof box, and hug closely 8 inner walls of proof box, its open position is in hugging closely slip casting pipe 9 departments, the spill returns and has placed back flow 11 on the thick liquid passageway, and flow back to biological mud case 1 through drawing liquid pump 2, apply the influence of the different upper portion loads of upper portion load simulation to mud dado hole stability on load board 7 in the process of the test. The middle of the baffle 6 is provided with a groove, the baffle 6 is fixed on the test box 8 through the buckle 10, the height of the baffle 6 is 5-10cm higher than the whole test box 8, slurry return sputtering is prevented, the baffle 6 is removed after the test is finished, and the wall protection strength of slurry generated around the hole wall is detected.
A grouting pipe 9 is arranged in the test box 8, and the top of the grouting pipe 9 is connected with the grouting guide pipe 5. The grouting pipe 9 is a sleeve-shaped member consisting of an inner guide pipe 13 and an outer thick cylinder 14, the upper part of the inner guide pipe 13 is a thin guide pipe, the lower part of the inner guide pipe is a thick guide pipe, the middle connection transition section of the upper thin pipe is a 45-degree slope and extends to the lower thick pipe, and the diameter of the outer thick cylinder 14 is equal to the diameter of the lower part of the inner thin guide pipe; the grouting guide pipe 5 is connected with a thin pipe in the inner guide pipe 13, the grouting pipe 9 is placed at the groove of the baffle 6 during testing and is not in contact with the bottom of the test box 8, a distance of 5-10cm is reserved to facilitate uniform distribution of slurry, a soil sample can be manufactured in the test box 8 only after the grouting pipe 9 is placed, the soil sample is pulled out after maintenance is completed, and the interface friction force during pulling out is tested. In the test process, a high-speed camera 4 is placed to shoot the panoramic view of the hole wall of the grouting pipe 9, the hole collapse or particle falling process is recorded, and the recorded image can simulate the collapse track of the hole wall through software.
The biological mud tank 1 sub-unit connection slip casting pipe 5 to adjust slip casting velocity of flow and flow through control valve 3, simulate the influence of different velocity of flow to the mud dado effect, mud tank sub-unit connection back flow 11 uses the drawing liquid pump 2 that back flow 11 connects to return experimental return thick liquid and form circulating device in returning to biological mud tank 1, and cooperation load board 7 simulation upper portion load and utilize high-speed camera 4 and fisheye camera pole 12 record test effect. The fisheye camera rod 12 is required to be as thin as possible, the fisheye camera rod 12 can be vertically placed in the hole, the hole wall cannot be touched, the shape of the slurry retaining wall cannot be damaged, the slurry retaining wall generation shape is dynamically shot, and a three-dimensional image is depicted.
The using method of the invention comprises the following steps:
(1) the baffle 6 is fixed on the test box 8 by the buckle 10, 5-10cm of soil is filled at the bottom of the test box 8 after the test box 8 is assembled, the grouting pipe 9 is placed at the groove of the baffle 6 and is tightly attached to the inner wall of the baffle 6 to embed a soil sample, the outer thick cylinder 14 of the grouting pipe 9 can be pulled out after the soil sample is prepared, the shrinkage ratio simulates the slurry retaining wall of a single-rod drilling machine to generate a pattern, and the outer thick cylinder 14 is reserved to simulate the slurry retaining wall of a sleeve or double-pipe drilling machine to generate a pattern.
(2) The opening of the load plate 7 is tightly attached to the outer wall of the grouting pipe 9 and stably placed, then the return pipe 11 is placed at a channel arranged on the load plate 7 and connected with a groove in the side wall of the test box 8, and the groove plays a role in fixing the return pipe 11.
(3) The grouting guide pipe 5 is connected with the liquid pump 2, the control valve 3 and the inner guide pipe 13 of the grouting pipe 9 in sequence from the lower part of the biological mud tank 1.
(4) The high-speed camera 4 is placed right in front of the baffle 6, can shoot the panorama of the hole wall of the grouting pipe 9, records the hole collapse or particle falling process, and can simulate the collapse track of the hole wall through software according to the recorded image.
(5) Before the test is started, the control valve 3 is in a closed state, the jack is placed on the load plate 7, the load pressure of the upper load on the hole is controlled, and the load pressure is cancelled until the grouting pipe 9 is pulled out and the baffle 6 needs to be disassembled.
(6) Before the start of the test, a biological mud drilling fluid is prepared: mixing urease bacteria with the activity of 7-15 mM urea hydrolysed/min, 0.3-2.0 mol/L urea and calcium chloride mixed solution 1:1 for mineralization 24h to prepare a biomineral containing 40% mineralized hydration products, preparing 1-20 parts of biomineral, 1-30 parts of sodium bentonite and 1-10 parts of water glass according to specific working conditions, mixing to prepare a biological mud drilling fluid, and pouring the prepared biological mud drilling fluid into a biological mud box 1.
(7) In the initial stage, the liquid pump 2 at the position of the return pipe 11 is firstly opened, then the liquid pump 2 at the position of the grouting guide pipe 5 is opened, the control valve 3 is opened to adjust the injection flow rate and the flow rate of the biological mud drilling fluid with different proportions, the control valve is adjusted to enable the mud flow rate to be 1.0m/s, 2.0m/s, 3.0m/s and 4.0m/s respectively for grouting, the influence of different flow rates on the mud retaining wall generation effect is tested, and the range of the proper flow rate of the biological mud drilling fluid is obtained.
(8) After grouting is finished and stands for 2 hours, the grouting pipe 9 is pulled out, the whole process of pulling out the grouting pipe is shot by the high-speed camera 4 in the whole process, the movement track of hole collapse is drawn, the time required for complete collapse is recorded, and the effects of the biological mud drilling fluid with different proportions are compared: 1 part of biological mineral, 1 part of sodium bentonite and 1 part of water glass collapse in the process of pulling out the grouting pipe 9, recording the motion track of the collapse of the hole by adopting a high-speed camera 4, comparing the motion track with the collapse track of the hole by using clear water grouting, and finding that the hole can collapse temporarily, thereby showing that the biological drilling fluid has an effect; the proportion of the biological mineral is improved by 5 parts, 10 parts of sodium bentonite and 5 parts of water glass are used for grouting, no soil particles fall off in the process of pulling out the grouting pipe 9, and the generated slurry protects the wall and effectively prevents holes from collapsing and particles from falling off.
(9) And vertically inserting a fisheye camera rod 12 into the hole without the complete hole collapse phenomenon, shooting the shape of the slurry retaining wall and the cementation effect among particles, and drawing a three-dimensional image.
(10) And (3) removing the baffle 6 24h after the grouting pipe 9 is pulled out, detecting the reinforcing effect of the biological mud drilling fluid near the hole by adopting a static sounding method, testing the penetration resistance of the generated mud skin, and further testing the reinforcing range of the biological mud drilling fluid.
The method can simulate the reinforcing effect of the biological mud drilling fluid retaining wall by changing different soil body types, is convenient to identify the soil body suitable for the drilling fluid, and has simple operation and simple and clear experimental results.
Claims (9)
1. The utility model provides a research test device of biological mud drilling fluid reinforcement effect, its characterized in that, includes biological mud case (1) and proof box (8), biological mud case (1) and proof box (8) between connect through slip casting pipe (5) and back flow (11) and form circulation circuit, proof box (8) lateral wall install baffle (6), the top is equipped with load board (7), is equipped with slip casting pipe (9) in proof box (8), slip casting pipe (9) be connected with slip casting pipe (5).
2. The test device for researching the reinforcing effect of the biological mud drilling fluid according to the claim 1, wherein the grouting guide pipe (5) is provided with a liquid pump (2) and a control valve (3).
3. The test device for researching the reinforcing effect of the biological mud drilling fluid according to the claim 1, wherein the return pipe (11) is provided with a liquid pump (2).
4. The test device for researching the reinforcing effect of the biological mud drilling fluid according to the claim 1, wherein the height of the baffle plate (6) is 5-10cm higher than the whole test box (8).
5. The test device for researching the reinforcing effect of the biological mud drilling fluid according to claim 1 or 4, wherein the baffle plate (6) is connected with the test box (8) through a buckle (10).
6. The test device for researching the reinforcing effect of the biological mud drilling fluid according to the claim 1, wherein the grouting pipe (9) is a casing pipe consisting of an inner guide pipe (13) and an outer thick cylinder (14), wherein the inner guide pipe (13) is connected with the grouting guide pipe (5).
7. The test device for researching the reinforcing effect of the biological mud drilling fluid according to claim 1, wherein a concave slurry return channel is arranged at the top of the load plate (7), and a return pipe (11) is arranged in the concave slurry return channel.
8. The use method of the test device for researching the reinforcing effect of the biological mud drilling fluid is characterized by comprising the following steps of:
(1) after the test box is assembled, filling soil of 5-10cm at the bottom, placing the grouting pipe at the groove of the baffle, and embedding a soil sample close to the inner wall of the baffle;
(2) placing the opening of the load plate close to the outer wall of the grouting pipe stably, and then placing the return pipe at a channel where the load plate is arranged;
(3) the grouting guide pipe is connected with an inner guide pipe of the liquid pump, the control valve and the grouting pipe in sequence from the lower part of the biological mud box;
(4) the high-speed camera is placed right in front of the baffle, can shoot the panorama at the hole wall of the grouting pipe, and records the process of hole collapse or particle falling;
(5) before the test is started, the control valve is closed, the jack is placed on the load plate, and the load pressure of the upper load on the hole is controlled;
(6) before the test is started, preparing biological mud drilling fluid;
(7) in the initial stage, a liquid pump at the position of the return pipe is opened, then a liquid pump at the position of the grouting guide pipe is opened, a control valve is opened, the injection flow speed and flow of the biological mud drilling fluid with different proportions are adjusted, and the influence of different flow speeds on the mud retaining wall generation effect is tested;
(8) after grouting, pulling out the grouting pipe, shooting the whole process of pulling out the grouting pipe by a high-speed camera in the whole process, drawing a hole collapse movement track, recording the time required by complete collapse, and comparing the effects of the biological mud drilling fluid with different proportions;
(9) vertically inserting a fisheye camera rod into a hole without complete hole collapse, shooting the shape of the slurry retaining wall and the cementation effect among particles, and drawing a three-dimensional image;
(10) and (3) removing the baffle after the grouting pipe is pulled out for at least 24 hours, detecting the reinforcing effect of the biological mud drilling fluid near the hole, testing the penetration resistance of the generated mud skin, and further testing the reinforcing range of the biological mud drilling fluid.
9. The use method of the test device for researching the reinforcing effect of the biological mud drilling fluid according to claim 8, wherein the preparation method of the biological mud drilling fluid in the step (6) comprises the following steps: mixing urease bacteria with the activity of 7-15 mM urea hydrolysed/min, 0.3-2.0 mol/L mixed solution of urea and calcium chloride for mineralization, preparing a biomineral containing mineralized hydration products, preparing 1-20 parts of biomineral, 1-30 parts of sodium bentonite and 1-10 parts of water glass according to specific working conditions, and mixing to prepare the biological mud drilling fluid.
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| CN202110763056.2A CN113482554B (en) | 2021-07-06 | 2021-07-06 | Test device for researching reinforcing effect of biological mud drilling fluid and use method |
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| CN110297076A (en) * | 2019-08-14 | 2019-10-01 | 中山大学 | A kind of three-dimensional visible osmotic grouting model test apparatus and method |
| CN112539028A (en) * | 2019-09-20 | 2021-03-23 | 中国石油化工股份有限公司 | Monitoring device and monitoring method for temperature change in frozen soil layer drilling process |
| CN113030277A (en) * | 2021-03-08 | 2021-06-25 | 广东工业大学 | System and method for testing permeability damage and grouting injectability of surrounding rock of water-rich sand layer tunnel |
-
2021
- 2021-07-06 CN CN202110763056.2A patent/CN113482554B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267722A (en) * | 2013-05-07 | 2013-08-28 | 中国矿业大学 | Pressure bearing permeation grouting strengthening test apparatus and method |
| CN105527384A (en) * | 2016-01-15 | 2016-04-27 | 山东大学 | Grouting simulating test device and test method thereof |
| CN108828195A (en) * | 2018-03-14 | 2018-11-16 | 同济大学 | It is a kind of to simulate the laboratory testing rig returned on pile-end post-grouting slurries and test method |
| CN109541182A (en) * | 2018-12-28 | 2019-03-29 | 山东科技大学 | A kind of Visual retrieval crack grouting simulation test device and test method |
| CN110297076A (en) * | 2019-08-14 | 2019-10-01 | 中山大学 | A kind of three-dimensional visible osmotic grouting model test apparatus and method |
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| CN113482554B (en) | 2022-04-15 |
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