CN109441425B - Method for measuring rock carrying capacity of horizontal well double-wall drill pipe system - Google Patents
Method for measuring rock carrying capacity of horizontal well double-wall drill pipe system Download PDFInfo
- Publication number
- CN109441425B CN109441425B CN201811383942.7A CN201811383942A CN109441425B CN 109441425 B CN109441425 B CN 109441425B CN 201811383942 A CN201811383942 A CN 201811383942A CN 109441425 B CN109441425 B CN 109441425B
- Authority
- CN
- China
- Prior art keywords
- drill rod
- rock debris
- liquid
- rock
- double
- 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
Links
- 239000011435 rock Substances 0.000 title claims abstract description 122
- 238000000034 method Methods 0.000 title claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 95
- 230000008569 process Effects 0.000 claims abstract description 38
- 238000004088 simulation Methods 0.000 claims abstract description 31
- 238000005303 weighing Methods 0.000 claims abstract description 19
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims abstract description 8
- 238000013508 migration Methods 0.000 claims abstract description 5
- 230000005012 migration Effects 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims description 24
- 238000002360 preparation method Methods 0.000 claims description 21
- 238000005259 measurement Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 2
- 239000012925 reference material Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (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)
- Earth Drilling (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to a device and a method for measuring rock carrying capacity of a horizontal well double-wall drill pipe system, which comprises a liquid distribution pool mixed with rock debris and a horizontally placed simulation shaft, wherein a rotatable outer drill pipe, an inner drill pipe and a drill bit are arranged in the simulation shaft, an axial flow pump is arranged on a pipeline between the liquid distribution pool and the simulation shaft, the rear end of the simulation shaft is connected with a compressor, a solid-liquid separator and a drying and weighing device are arranged on a pipeline between the inner drill pipe and the liquid distribution pool, a high-speed camera for recording the rock debris migration and settlement processes is arranged on the outer side of the simulation shaft, velocimeter sensors are arranged at intervals on the lower half part of the outer drill pipe, and a pressure gauge is connected on a pipeline between the axial flow pump and the simulation shaft. According to the invention, through the rotation of the outer drill rod, the eccentric phenomenon of the outer drill rod under the action of gravity is counteracted, the stripping and carrying effects of the unidirectional airflow jet on the rock debris are improved, the rock debris can be more effectively carried out from the well bottom, the rock carrying performance of the double-wall drill rod system is evaluated, and a reference material is provided for the optimization of the system.
Description
Technical Field
The invention relates to the technical field of double-wall drill pipe drilling, in particular to a device and a method for measuring the rock carrying capacity of a horizontal well double-wall drill pipe system.
Background
The gas reverse circulation well drilling technology based on the double-wall drill rod is a novel well drilling and completing technology which is provided in recent years and has low gas injection amount, low cost and high efficiency. The technology adopts a double-wall drill rod, namely an inner drill rod and an outer drill rod are included, and gas is input from the outer drill rod and is transported downwards along the outer drill rod to a drill bit for output. The gas output by the drill bit carries the rock debris at the bottom of the well to return upwards, flows into the inner drill rod along the branch pipe of the inner drill rod, is conveyed to the well mouth through the inner drill rod and is discharged, and the gas reverse circulation drilling process is completed.
When the drilling technology is applied to a horizontal well, the rock debris can be deposited on the bottom edge of the well wall to form a rock debris bed due to the influence of the gravity, viscous resistance, impact force, buoyancy and the like on the rock debris in the horizontal well. Meanwhile, the outer drill rod can be eccentric in the horizontal well due to the influence of gravity, so that the effect that the eccentric drill rod carries rock debris under the condition that a rock debris bed exists is not ideal. If the rock debris cannot be effectively carried out, the rock debris can be deposited on the well wall, so that the drill bit is abraded or stuck, and the drilling process is influenced. Therefore, the method has important significance for carrying out experiments and determination on the strength of the rock carrying capacity of the double-wall drill rod reverse circulation system in the horizontal well and quantitatively evaluating the adaptability of the gas reverse circulation drilling technology and optimizing the overall process scheme.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects in the prior art, the invention provides a device and a method for measuring the rock carrying capacity of a horizontal well double-wall drill rod system, so as to quantitatively evaluate the application adaptability of a gas reverse circulation drilling technology based on a double-wall drill rod in the horizontal well drilling process and provide a basis for optimizing the overall process scheme.
The technical scheme adopted by the invention for solving the technical problems is as follows: a device for measuring the rock carrying capacity of a horizontal well double-wall drill rod system comprises a liquid preparation pool mixed with rock debris and a horizontally placed simulation shaft, the simulation pit shaft in be equipped with rotatable outer drilling rod, establish interior drilling rod in outer drilling rod and connect the drill bit at outer drilling rod front end, be equipped with the axial-flow pump on connecting the pipeline between liquid distribution pool and the simulation pit shaft, simulation pit shaft rear end pipe connection has the compressor of beating compressed gas in the outside drilling rod, be equipped with solid-liquid separator and carry out the stoving weigher of stoving weighing to the detritus of separating on connecting the pipeline between interior drilling rod and the liquid distribution pool, the simulation pit shaft outside is equipped with the high-speed camera of record detritus migration and settlement process, outer drilling rod lower half interval is equipped with the tachymeter sensor of measuring and carrying the rate of flow change of bits liquid in the flow process, be connected with the manometer of measuring and carrying bits liquid in the flow process pressure change on the pipeline between axial-flow pump and the simulation pit shaft.
In order to ensure firm connection and prevent liquid injection, the front end of the outer drill rod is provided with an adapter, an underground drilling tool is connected between the adapter and the drill bit, and the rear end of the simulation shaft is provided with an anti-injection valve which is connected with a compressor pipeline through a blowout preventer.
In order to offset the influence of the eccentricity problem of the outer drill rod in the horizontal well due to gravity factors on the rock carrying capacity, the rear end of the outer drill rod is in transmission connection with a driving device which is controlled by a steering wheel and a shaft wheel and can rotate the outer drill rod.
The upper part of the liquid preparation pool is provided with a chip storage tank for adding rock chips into the liquid preparation pool, the liquid preparation pool is internally provided with a stirrer, and the rock chips and water are fully stirred by the stirrer to obtain ideal rock chip-containing liquid.
Meanwhile, the high-speed camera is connected with a computer for data processing and storage through a data line so as to record and store the image pictures shot by the high-speed camera.
In order to facilitate the high-speed camera to more clearly shoot and observe the gas reverse circulation rock-carrying process, the inner drill rod, the outer drill rod and the simulation shaft are all made of transparent PC pipe materials.
A method for measuring the rock carrying capacity of a horizontal well double-wall drill pipe system by adopting the experimental device comprises the following steps:
a. installing a simulation shaft, an inner drill rod and an outer drill rod, connecting required pipelines, and adding a certain amount of clear water into a liquid preparation pool; then opening a control valve at the output end of the axial flow pump, and inputting the liquid in the liquid distribution pool into the simulated shaft from the bottom of the simulated shaft; starting a compressor and a rotating device, driving gas into the compressor along an outer drill rod, and performing test operation on a double-wall drill rod reverse circulation system in an outer drill rod rotating mode to ensure that each pipeline works normally and discharge capacity is stabilized; after the gas reverse circulation process starts, starting a high-speed camera, aligning the part of the simulated shaft to be observed, reading the speed meter sensor and the pressure gauge, and determining that each instrument can work normally;
b. after the examination and test operation work is finished, closing the axial flow pump, the compressor and the rotating device, and preparing the rock debris-containing liquid, namely firstly weighing rock debris with certain mass, and putting the rock debris into a liquid preparation pool to be stirred with water to obtain the rock debris-containing liquid required by the experiment; then starting an axial flow pump, pressurizing and pumping all the rock debris-containing liquid into an outer drill rod of the double-wall drill rod, closing the axial flow pump after the steps are completed, standing the measuring device for more than six hours until the rock debris-containing liquid is layered, and depositing large-particle rock debris on the wall of the simulated shaft to form a rock debris bed;
c. after a detritus bed is formed, opening an axial flow pump, a compressor and a rotating device to enable gas to realize reverse circulation in a double-wall drill rod, formally starting to simulate the rock carrying process of a double-wall drill rod reverse circulation system in a horizontal well, stripping detritus from the detritus bed through the erosion action of airflow under the rotation action of an outer drill rod, and then transporting liquid containing detritus from an inner drill rod to a solid-liquid separator to separate the liquid from the detritus; drying the separated rock debris and weighing the mass of the rock debris, and evaluating the strength of the rock carrying capacity of the double-wall drill rod reverse circulation system in the horizontal well according to the proportion of the mass difference between the total mass of the input rock debris and the total mass of the carried rock debris in the mass of the input rock debris; weighing rock debris with different mass, particle size and density, and repeating the steps; for the simulated flowing rock carrying process of gas reverse circulation, shooting and storing an image of the flowing condition of the rock carrying liquid by a high-speed camera;
d. after the measurement is finished and data recording is carried out, the axial flow pump and the rotating device are closed, a pressure relief valve of the experimental pipeline is opened to relieve pressure, and the pressure of the pipeline is exhausted; and closing the compressor, stopping gas circulation, emptying the simulation shaft, the liquid preparation tank, the inner drill rod, the outer drill rod and the sewage in the solid-liquid separator, and finishing the measurement.
The invention has the beneficial effects that: according to the invention, through the rotary motion of the outer drill rod, the eccentric phenomenon of the double-wall drill rod in the horizontal well under the action of gravity is counteracted, the stripping and carrying effects of the unidirectional airflow jet on the rock debris are improved, the reverse circulating airflow in the horizontal well can rotate around the axis direction of the outer drill rod to flow out, the rock debris is more effectively carried out from the well bottom, the rock carrying performance of the double-wall drill rod system is evaluated, and a reference basis is provided for the optimization of the system.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the structure of an assay device according to a preferred embodiment of the present invention.
FIG. 2 is a schematic diagram of the gas reverse circulation process of the double-wall drill pipe in the horizontal well.
FIG. 3 is a block diagram of the experimental procedure of the present invention.
In the figure, 1, a compressor 2, a blowout preventer 3, an anti-blowout valve 4, an inner drill rod 5, an outer drill rod 6, a computer 7, a high-speed camera 8, a conversion joint 9, a velocimeter sensor 10, a drill bit 11, a simulated wellbore 12, a downhole drilling tool 13, a pressure gauge 14, a control valve 15, an axial flow pump 16, a liquid distribution tank 17, a stirrer 18, a scrap storage tank 19, a drying and weighing device 20, a solid-liquid separator 21, a pressure relief valve 22, a rock scrap bed 23 and a rotating device are arranged.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, 2 and 3, the device for measuring the rock carrying capacity of the horizontal well double-wall drill pipe system comprises a liquid preparation pool 16 mixed with rock debris and a horizontally placed simulation shaft 11, wherein a debris storage tank 18 for adding the rock debris into the liquid preparation pool 16 is arranged above the liquid preparation pool 16, a stirrer 17 is arranged in the liquid preparation pool 16, and the rock debris and water are fully stirred by the stirrer 17 to obtain an ideal rock debris-containing liquid; the simulation shaft 11 is internally provided with a rotatable outer drill rod 5, an inner drill rod 4 arranged in the outer drill rod 5 and a drill bit 10 connected to the front end of the outer drill rod 5, the front end of the outer drill rod 5 is provided with a conversion joint 8, an underground while-drilling instrument 12 is connected between the conversion joint 8 and the drill bit 10, and the outer drill rod 5, the inner drill rod 4, the conversion joint 8, the underground while-drilling instrument 12 and the drill bit 10 form the main components of the double-wall drill rod.
The rear end of the outer drill rod 5 is in transmission connection with a driving device 23 which can realize rotation of the outer drill rod 5 under the control of a steering wheel and a shaft wheel, the measuring device simulates the horizontal well condition, rock debris is deposited on the bottom edge of the simulated shaft 11 under the influence of gravity, viscous resistance, impact force and buoyancy, a rock debris bed 22 is formed, meanwhile, the outer drill rod 5 can generate an eccentric phenomenon in the horizontal simulated shaft 11 under the influence of gravity, and therefore, the single unidirectional airflow jet can cause an unsatisfactory rock carrying effect, the outer drill rod 5 is rotated by the driving device 23, the airflow in reverse circulation can rotate around the axis direction of the outer drill rod 5 to flow out, the influence caused by the eccentric phenomenon of the outer drill rod 5 is counteracted, and the rock debris can be carried out from the shaft bottom more effectively.
The back end of the simulated shaft 11 is provided with an anti-blowout valve 3, and the anti-blowout valve 3 is connected with a compressor 1 which injects compressed gas into an outer drill rod 5 through a pipeline of a blowout preventer 2.
An axial flow pump 15 is arranged on a pipeline connected between the liquid distribution tank 16 and the simulation shaft 11, a velocimeter sensor 9 for measuring flow velocity change of the chip carrying liquid in the flowing process is arranged at the lower half part of the outer drill rod 5 at intervals, and a pressure gauge 13 and a control valve 14 for measuring pressure change of the chip carrying liquid in the flowing process are connected on the pipeline between the axial flow pump 15 and the simulation shaft 11.
And a solid-liquid separator 20 and a drying and weighing device 19 for drying and weighing the separated rock debris are arranged on a pipeline connecting the inner drill rod 4 and the liquid distribution tank 16, and a pressure relief valve is also arranged on the pipeline so as to facilitate the emptying of the pipeline pressure after the measurement is finished.
And a high-speed camera 7 for recording the migration and sedimentation process of the rock debris is arranged outside the simulated shaft 11, and the high-speed camera 7 is connected with the computer 6 through a data line so as to record and store the image pictures shot by the high-speed camera 7.
In order to make the high-speed camera 7 shoot and observe the gas reverse circulation rock-carrying process more clearly, the inner drill rod 4, the outer drill rod 5 and the simulation shaft 11 are all made of transparent PC pipe materials.
The measuring device relates to a process of simulating the drilling process of a double-wall drill rod system in a horizontal well, performing solid-liquid separation and measurement calculation on mixed liquid discharged circularly, and measuring and observing liquid carrying debris circulation.
The process of simulating drilling comprises the following steps: the rock debris in the rock debris storage tank 18 is added into the liquid preparation pool 16, and the rock debris is stirred with water by the stirrer 17 to prepare the rock debris-containing liquid required by the determination. Then, gas is input into the outer drill rod 5 in the double-wall drill rod through the compressor 1, and the rotating device 23 is started, so that the gas reverse circulation process of the double-wall drill rod in the horizontal well can be realized. And then pressurizing the prepared rock debris-containing liquid into the simulated shaft 11 through the axial-flow pump 15, placing for a period of time to form a rock debris bed 22, and stripping rock debris contained in the rock debris bed 22 by gas through reverse circulation and carrying out the gas out of the double-wall drill rod, so that the drilling process of the gas reverse circulation system of the double-wall drill rod is realized.
The process of carrying out solid-liquid separation and measurement observation on the mixed liquid discharged circularly comprises the following steps: and (3) discharging mixed liquid from the inner drill rod 4 of the double-wall drill rod, allowing the mixed liquid to flow into a solid-liquid separator 20, performing solid-liquid separation on the mixed liquid through the solid-liquid separator 20, drying and weighing the separated rock debris through a drying and weighing device 19, and calculating the rock carrying capacity of the double-wall drill rod applied to the horizontal well by using the mass difference between the input rock debris and the carried rock debris.
The process of measuring and observing the liquid carrying the cuttings circulation comprises the following steps: the metering process is mainly realized by a speedometer sensor 9 and a pressure gauge 13, and the flow velocity and pressure change in the flowing process of the rock debris-containing liquid are measured by the speedometer sensor 9 and the pressure gauge 13; the observation process mainly uses a high-speed camera 7 and a computer 6, wherein the high-speed camera 7 can record the migration and sedimentation process of the rock debris, observe the change of the flow form and transmit the recorded result to the computer 6 for storage.
A method for measuring the rock carrying capacity of a horizontal well double-wall drill pipe system by adopting the experimental device comprises the following steps:
a. installing a simulation shaft 11, an inner drill rod 4 and an outer drill rod 5, connecting required pipelines, and adding a certain amount of clear water into a liquid distribution pool 16; then, opening a control valve 14 at the output end of the axial flow pump 15, and inputting the liquid in the liquid distribution tank 16 into the simulated shaft 11 from the bottom of the simulated shaft 11; starting the compressor 1 and the rotating device 23, driving gas into the outer drill rod 5, and performing test operation on the double-wall drill rod reverse circulation system under the rotating mode of the outer drill rod 5 to ensure that each pipeline works normally and discharge capacity is stabilized; after the gas reverse circulation process starts, starting the high-speed camera 7, aligning the part of the simulated shaft 11 to be observed, reading the speed measuring instrument sensor 9 and the pressure gauge 13, and determining that each instrument can work normally;
b. after the examination and test operation work is finished, closing the axial flow pump 15, the compressor 1 and the rotating device 23, and preparing the liquid containing rock debris, firstly weighing rock debris with certain mass, opening a connecting valve of the debris storage tank 18 and the liquid preparation tank 16, enabling the rock debris to enter the liquid preparation tank 16 and be stirred with water through the stirrer 17, and obtaining the liquid containing rock debris required by the experiment; then starting an axial flow pump 15, pressurizing and pumping all the rock debris-containing liquid into an outer drill rod 5 of the double-wall drill rod, closing the axial flow pump 15 after the steps are completed, standing the measuring device for more than six hours until the rock debris-containing liquid is layered, and depositing large-particle rock debris on the wall of the simulated shaft 11 to form a rock debris bed 22;
c. after a rock debris bed 22 is formed, opening the axial-flow pump 15, the compressor 1 and the rotating device 23 to enable gas to realize reverse circulation in the double-wall drill rod, formally simulating a rock carrying process of a double-wall drill rod reverse circulation system in a horizontal well, stripping rock debris from the rock debris bed 22 through the erosion action of airflow under the rotation action of the outer drill rod 5, and then transferring rock debris-containing liquid from the inner drill rod 4 to the solid-liquid separator 20 to separate the liquid from the rock debris; drying the separated rock debris through a drying and weighing device 19, weighing the mass of the rock debris, and evaluating the strength of the rock carrying capacity of the double-wall drill rod reverse circulation system in the horizontal well through the proportion of the mass difference between the total mass of the input rock debris and the total mass of the carried rock debris in the mass of the input rock debris; weighing rock debris with different mass, particle size and density, and repeating the steps; for the simulated gas reverse circulation flowing rock carrying process, shooting the flowing condition of the rock carrying liquid through a high-speed camera 7, and transmitting the shot image data to a computer 6 for storage through a data line;
d. after the measurement is finished and data recording is carried out, the axial flow pump 15 and the rotating device 23 are closed, the pressure relief valve 21 of the experimental pipeline is opened to relieve pressure, and the pressure of the pipeline is exhausted; then the compressor 1 is closed, the gas circulation is stopped, the sewage in the simulated shaft 11, the liquid preparation pool 16, the inner drill rod 4, the outer drill rod 5 and the solid-liquid separator 20 is emptied, and the measurement is finished
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. A method for measuring the rock carrying capacity of a horizontal well double-wall drill rod system comprises a liquid distribution pool mixed with rock debris, a horizontally placed simulation shaft, a rotatable outer drill rod, an inner drill rod arranged in the outer drill rod and a drill bit connected to the front end of the outer drill rod, wherein an axial flow pump is arranged on a pipeline connected between the liquid distribution pool and the simulation shaft, a compressor for pumping compressed gas into the outer drill rod is connected to a pipeline at the rear end of the simulation shaft, a solid-liquid separator and a drying and weighing device for drying and weighing the separated rock debris are arranged on a pipeline connected between the inner drill rod and the liquid distribution pool, a high-speed camera for recording the migration and sedimentation processes of the rock debris is arranged outside the simulation shaft, a velocimeter sensor for measuring the flow speed change of the rock debris carrying liquid in the flowing process is arranged at the lower half part of the outer drill rod at intervals, and a pressure gauge for measuring the pressure change of the rock debris carrying liquid in the flowing process is connected to the pipeline between the axial flow pump and the simulation shaft, the method is characterized in that: comprises the following steps:
a. installing a simulation shaft, an inner drill rod and an outer drill rod, connecting required pipelines, and adding a certain amount of clear water into a liquid preparation pool; then opening a control valve at the output end of the axial flow pump, and inputting the liquid in the liquid distribution pool into the simulated shaft from the bottom of the simulated shaft; starting a compressor and a rotating device, driving gas into the compressor along an outer drill rod, and performing test operation on a double-wall drill rod reverse circulation system in an outer drill rod rotating mode to ensure that each pipeline works normally and discharge capacity is stabilized; after the gas reverse circulation process starts, starting a high-speed camera, aligning the part of the simulated shaft to be observed, reading the speed meter sensor and the pressure gauge, and determining that each instrument can work normally;
b. after the examination and test operation work is finished, closing the axial flow pump, the compressor and the rotating device, and preparing the rock debris-containing liquid, namely firstly weighing rock debris with certain mass, and putting the rock debris into a liquid preparation pool to be stirred with water to obtain the rock debris-containing liquid required by the experiment; then starting an axial flow pump, pressurizing and pumping all the rock debris-containing liquid into an outer drill rod of the double-wall drill rod, closing the axial flow pump after the steps are completed, standing the measuring device for more than six hours until the rock debris-containing liquid is layered, and depositing large-particle rock debris on the wall of the simulated shaft to form a rock debris bed;
c. after a detritus bed is formed, opening an axial flow pump, a compressor and a rotating device to enable gas to realize reverse circulation in a double-wall drill rod, formally starting to simulate the rock carrying process of a double-wall drill rod reverse circulation system in a horizontal well, stripping detritus from the detritus bed through the erosion action of airflow under the rotation action of an outer drill rod, and then transporting liquid containing detritus from an inner drill rod to a solid-liquid separator to separate the liquid from the detritus; drying the separated rock debris and weighing the mass of the rock debris, and evaluating the strength of the rock carrying capacity of the double-wall drill rod reverse circulation system in the horizontal well according to the proportion of the mass difference between the total mass of the input rock debris and the total mass of the carried rock debris in the mass of the input rock debris; weighing rock debris with different mass, particle size and density, and repeating the steps; for the simulated flowing rock carrying process of gas reverse circulation, shooting and storing an image of the flowing condition of the rock carrying liquid by a high-speed camera;
d. after the measurement is finished and data recording is carried out, the axial flow pump and the rotating device are closed, a pressure relief valve of the experimental pipeline is opened to relieve pressure, and the pressure of the pipeline is exhausted; and closing the compressor, stopping gas circulation, emptying the simulation shaft, the liquid preparation tank, the inner drill rod, the outer drill rod and the sewage in the solid-liquid separator, and finishing the measurement.
2. The method for measuring the carrying capacity of the horizontal well double-wall drill pipe system according to claim 1, is characterized in that: the front end of the outer drill rod is provided with an adapter, an underground drilling instrument is connected between the adapter and the drill bit, and the rear end of the simulation shaft is provided with an anti-blowout valve which is connected with a compressor pipeline through a blowout preventer.
3. The method for measuring the carrying capacity of the horizontal well double-wall drill pipe system according to claim 1, is characterized in that: the rear end of the outer drill rod is in transmission connection with a driving device which can enable the outer drill rod to rotate under the control of a steering wheel and a shaft wheel.
4. The method for measuring the carrying capacity of the horizontal well double-wall drill pipe system according to claim 1, is characterized in that: and a scrap storage tank for adding the rock scraps into the liquid preparation tank is arranged above the liquid preparation tank, and a stirrer is arranged in the liquid preparation tank.
5. The method for measuring the carrying capacity of the horizontal well double-wall drill pipe system according to claim 1, is characterized in that: the high-speed camera is connected with a computer for processing and storing data through a data line.
6. The method for measuring the carrying capacity of the horizontal well double-wall drill pipe system according to claim 1, is characterized in that: the inner drill rod, the outer drill rod and the simulation shaft are all made of transparent PC pipe materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383942.7A CN109441425B (en) | 2018-11-20 | 2018-11-20 | Method for measuring rock carrying capacity of horizontal well double-wall drill pipe system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383942.7A CN109441425B (en) | 2018-11-20 | 2018-11-20 | Method for measuring rock carrying capacity of horizontal well double-wall drill pipe system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109441425A CN109441425A (en) | 2019-03-08 |
| CN109441425B true CN109441425B (en) | 2022-02-11 |
Family
ID=65554026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811383942.7A Active CN109441425B (en) | 2018-11-20 | 2018-11-20 | Method for measuring rock carrying capacity of horizontal well double-wall drill pipe system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109441425B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250634A (en) * | 2021-06-28 | 2021-08-13 | 数皮科技(湖北)有限公司 | Method and device for processing drilling debris through sieving, cleaning, drying and weighing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3718480C2 (en) * | 1987-06-02 | 1994-04-14 | Bauer Spezialtiefbau | Drilling device for a high pressure injection drilling method and drilling method using the drilling device |
| CN202810680U (en) * | 2012-10-15 | 2013-03-20 | 中国石油天然气集团公司 | Well drilling combination device using double-wall drill pipe |
| CN204402376U (en) * | 2014-12-22 | 2015-06-17 | 中石化胜利石油工程有限公司钻井工艺研究院 | A kind of double-wall drill pipe well system |
| CN105551362A (en) * | 2015-12-24 | 2016-05-04 | 中国地质大学（武汉） | Horizontal directional drilling annular rock debris migration integration simulation experiment method and experiment apparatus thereof |
| CN205330658U (en) * | 2016-01-05 | 2016-06-22 | 西南石油大学 | Visual experimental apparatus of simulation gas drilling detritus migration |
| CN206309387U (en) * | 2016-12-07 | 2017-07-07 | 中国地质大学（北京） | Horizontal well double-wall drill pipe Hydraulic Circulation experimental provision |
| CN207660565U (en) * | 2017-11-27 | 2018-07-27 | 中石化石油工程技术服务有限公司 | A kind of directional well drilling liquid takes rock efficiency rating experimental provision |
-
2018
- 2018-11-20 CN CN201811383942.7A patent/CN109441425B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3718480C2 (en) * | 1987-06-02 | 1994-04-14 | Bauer Spezialtiefbau | Drilling device for a high pressure injection drilling method and drilling method using the drilling device |
| CN202810680U (en) * | 2012-10-15 | 2013-03-20 | 中国石油天然气集团公司 | Well drilling combination device using double-wall drill pipe |
| CN204402376U (en) * | 2014-12-22 | 2015-06-17 | 中石化胜利石油工程有限公司钻井工艺研究院 | A kind of double-wall drill pipe well system |
| CN105551362A (en) * | 2015-12-24 | 2016-05-04 | 中国地质大学（武汉） | Horizontal directional drilling annular rock debris migration integration simulation experiment method and experiment apparatus thereof |
| CN205330658U (en) * | 2016-01-05 | 2016-06-22 | 西南石油大学 | Visual experimental apparatus of simulation gas drilling detritus migration |
| CN206309387U (en) * | 2016-12-07 | 2017-07-07 | 中国地质大学（北京） | Horizontal well double-wall drill pipe Hydraulic Circulation experimental provision |
| CN207660565U (en) * | 2017-11-27 | 2018-07-27 | 中石化石油工程技术服务有限公司 | A kind of directional well drilling liquid takes rock efficiency rating experimental provision |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109441425A (en) | 2019-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2535857C1 (en) | Proppant dosing and mixing system | |
| CN102007268B (en) | Test procedure to determine concentration and relative distribution of sized particles in drilling fluid | |
| CN101915854B (en) | Device and method for detecting sanding critical flow velocity of gas well | |
| CN102445395B (en) | Residue soil improvement experimental device for shield method tunnel construction | |
| CN205844014U (en) | A kind of drilling fluid online quantitative collection transmitting device | |
| CN111022030A (en) | Device and method for measuring coal seam gas content based on flow method | |
| CN109441425B (en) | Method for measuring rock carrying capacity of horizontal well double-wall drill pipe system | |
| CN109339766A (en) | Air-filling well-drilling dynamic circulation analog synthesis experimental system | |
| CN217304821U (en) | Visual test system for simulating multi-type single-crack grouting seepage | |
| CN107246007B (en) | A kind of CFG of construction method | |
| CN109281616A (en) | A kind of straight well double-wall drill pipe system large rock-carrying ability measurement device and measuring method | |
| CN114152510A (en) | Test device and test method for water-rich broken rock stratum moving water grouting reinforcement model | |
| SA517390225B1 (en) | Bypass flushing for gas extraction systems | |
| CN104330835A (en) | Testing system for coal containing methane hybrid dynamic disaster working surface in predicting laboratory | |
| CN209129602U (en) | Horizontal well horizontal segment dynamic circulation imitative experimental appliance | |
| CN207231751U (en) | Slurry shield machine circulation system experimental rig | |
| CN109061122B (en) | Device and method for measuring slag carrying capacity of slurry | |
| CN207177782U (en) | A kind of device of automatic measurement horizontal directional drill mud property | |
| CN206309387U (en) | Horizontal well double-wall drill pipe Hydraulic Circulation experimental provision | |
| CN206573460U (en) | It is a kind of to simulate the experimental provision that corrosion influences on tight sand reservoir diagenesis | |
| CN206725563U (en) | A kind of device simulated controlled pressure drilling difference drilling fluid annular hydraulics characteristic and influenceed | |
| CN208024342U (en) | A kind of experimental provision simulated drill string rotating and buckling and slim-hole annular pressure is influenced | |
| CN205844133U (en) | A kind of assay device measuring shield sediment improvement mixture creeping | |
| CN209145534U (en) | Experimental system for comprehensive simulation air-filling well-drilling dynamic circulation | |
| CN106124364B (en) | A kind of test method and device measuring shield sediment improvement mixture creeping |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |