CN111441717A - Rotary steering drilling system test matching system - Google Patents
Rotary steering drilling system test matching system Download PDFInfo
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- CN111441717A CN111441717A CN202010268943.8A CN202010268943A CN111441717A CN 111441717 A CN111441717 A CN 111441717A CN 202010268943 A CN202010268943 A CN 202010268943A CN 111441717 A CN111441717 A CN 111441717A
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- 238000005553 drilling Methods 0.000 title claims abstract description 91
- 238000012360 testing method Methods 0.000 title claims abstract description 59
- 238000004088 simulation Methods 0.000 claims abstract description 35
- 239000011435 rock Substances 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 18
- 238000000746 purification Methods 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 230000004807 localization Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000010412 perfusion Effects 0.000 description 3
- 238000012827 research and development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000013441 quality evaluation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- 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
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- 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
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
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- 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
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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- 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
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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)
- Mechanical Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Earth Drilling (AREA)
Abstract
A rotary steering drilling system test matching system mainly comprises a rotary drilling system, a shaft system, a stratum simulation system and a continuous oil pipe; the rotary drilling system applies bit pressure and provides rotary torque to the test system during testing, the shaft system and the coiled tubing are both of a structure simulating a well body, and the stratum simulation system simulates a stratum rock structure; the rotary drilling system is connected with the shaft system into a whole through a locator on the rotary drilling system and a flange plate of a wellhead shaft; and the end port of the shaft system is connected with a flange of the stratum simulation system, the outlet of the slurry pump is communicated with a continuous oil pipe, and the outlet of the continuous oil pipe is communicated with a central pipe of the rotary drilling system through a high-pressure manifold. The invention simulates the oil field drilling working condition through the process of the rotary drilling stratum simulation system, tests the flow, the pressure drop, the applied drilling pressure and the bearing torque of the rotary steering tool under different rotating speeds by developing simulation tests, establishes the mutual relation and provides technical support for developing the rotary steering tool.
Description
Technical Field
The invention relates to the field of petroleum and natural gas drilling, in particular to an indoor ground simulation test device for a rotary guide product in the petroleum and natural gas drilling industry.
Background
With the needs of special oil wells such as ultra-deep wells, highly difficult directional wells, horizontal wells, extended reach wells, horizontal branch wells and the like for developing special oil reservoirs in China, the research on the rotary steering drilling technology is increasingly intense, and in order to research and develop rotary steering technology products, a reliable ground simulation test device is one of the necessary conditions to perform ground simulation tests before descending into a well so as to verify and detect the functional principle, the guiding force and the guiding effect of a rotary steering tool and check the reliability of the tool products. The foreign rotary guiding tool products are expensive, and in order to realize localization of the rotary tools and reduce drilling and production costs, various oil and gas fields accelerate research and development of the rotary guiding tool products, the capability of carrying out system test for ground simulation of the rotary guiding tool products in China is insufficient, and the localization process of the rotary tools in China is severely restricted.
Disclosure of Invention
Aiming at the current situation, the invention discloses a rotary steering drilling system test matching system, which aims to solve the requirement of a rotary steering product on ground simulation test and integrally improve the test capability of a rotary steering drilling system test system. The industrial problem that the localization process of the rotary tool is restricted due to insufficient capability of a test system is solved.
The technical scheme adopted by the invention is as follows:
a rotary steering drilling system test matching system mainly comprises a rotary drilling system, a shaft system, a stratum simulation system and a continuous oil pipe; the rotary drilling system applies bit pressure and provides rotary torque to the test system during testing, the shaft system and the coiled tubing are both of a structure simulating a well body, and the stratum simulation system simulates a stratum rock structure; the rotary drilling system is connected with the shaft system into a whole through a locator on the rotary drilling system and a flange plate of a wellhead shaft; and the end port of the shaft system is connected with a flange of the stratum simulation system, the outlet of the slurry pump is communicated with a continuous oil pipe, and the outlet of the continuous oil pipe is communicated with a central pipe of the rotary drilling system through a high-pressure manifold.
The rotary drilling system mainly comprises a motor, a hydraulic cylinder, a guide rod, a moving seat, a central pipe, a fixed seat and a positioner; one end of the central tube is connected with the motor, and the other end of the central tube is integrally arranged on the movable seat after being connected with the drill rod; the guide rod is arranged on the two sides of the fixed seat and is in sliding fit with the movable seat, and the upper end and the lower end of the guide rod are respectively provided with an upper limit switch and a lower limit switch to limit the stroke of the movable seat; the hydraulic cylinder body is arranged on the movable seat, and the piston end of the hydraulic cylinder body is arranged on the fixed seat; the drill rods are connected through drill rod threaded buckles to form a drill string, the drill rod at the foremost end is connected with a rotary guiding tool through the threaded buckles, and the front end of the rotary guiding tool is connected with a drill bit through the threaded buckles.
The shaft system is mainly formed by arranging a well mouth shaft, an inclined straight section shaft, a bending section shaft and a horizontal section shaft from high to low in sequence and connecting the shafts in a tangent sealing manner and then supporting the shafts by shaft supports, wherein a discharge port is arranged at the tail end of the horizontal section shaft, and a shaft flange is arranged at a tail end port of the horizontal section shaft.
The stratum simulation system is formed by combining a plurality of same modules which are prefabricated and formed by cement and broken stones according to a proportion, and the modules at the head part are provided with pre-buried flanges and a plurality of well mouths.
The coiled tubing is provided with a plurality of groups, and each group is switched on or off through a stop valve.
The test matching system comprises a purification circulating system, the purification circulating system is connected to the tail end of a shaft system and then connected with a slurry pump through a filling pump, an outlet of the slurry pump is communicated with a continuous oil pipe, and an outlet of the continuous oil pipe is communicated with a central pipe of the rotary drilling system through a high-pressure manifold.
The purification circulating system mainly comprises a settling tank, a vibrating screen and a circulating tank; the vibrating screen is arranged above the settling tank, the settling tank is arranged adjacent to the circulating tank, and the middle of the settling tank is provided with a baffle; a discharge port at the position of a horizontal section of a shaft in the shaft system is communicated with the vibrating screen through a hose; the central pipe and the drill rod are of hollow structures, and drilling fluid can flow through the middle of the central pipe and the drill rod. The outer surfaces of the drill string, the rotary guiding tool and the drill bit which are connected with each other through the drill rods form an annular space with the inner surfaces of the stratum simulation system and the shaft system, and high-pressure drilling fluid enters the drill rods from the central pipe, passes through the rotary guiding tool and the drill bit, flows out of a discharge opening arranged on the shaft system through the annular space and enters the vibrating screen.
The invention simulates the oil field drilling working condition through the process of the rotary drilling stratum simulation system, tests the flow, the pressure drop, the applied drilling pressure and the bearing torque of the rotary guiding tool under different rotating speeds by developing simulation tests, establishes the mutual relation, provides technical support for developing the rotary guiding tool and can evaluate the quality of the rotary guiding tool according to the requirement; the pressure drop and the flow range of the rotary guiding tool are measured in the whole test process, a technical basis is provided for the research and development of rotary guiding tool products, and the product quality evaluation is carried out. The method and the device aim to meet the requirement of ground simulation test of the rotary steering product and integrally improve the test capability of the rotary steering drilling system test system. The industrial problem that the localization process of the rotary tool is restricted due to insufficient capability of a test system is solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a rotary drilling system of the present invention;
FIG. 3 is a schematic representation of the annular space composition of the present invention.
The specific implementation mode is
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, a rotary steering drilling system test complete set system mainly comprises a rotary drilling system 1, a shaft system 2, a stratum simulation system 6 and a continuous oil pipe 12; the rotary drilling system 1 applies bit pressure and provides rotary torque to the test system during testing, the shaft system 2 and the coiled tubing 12 are both of a structure simulating a well bore, and the stratum simulation system 6 simulates a stratum rock structure; the rotary drilling system 1 is connected with the shaft system 2 into a whole through a locator 1-7 on the rotary drilling system and a flange of a wellhead device 2-4; and the end port of the shaft system 2 is connected with a flange of the stratum simulation system 6, the outlet of the slurry pump 11 is communicated with a continuous oil pipe 12, and the outlet of the continuous oil pipe 12 is communicated with central pipes 1-5 of the rotary drilling system 1 through a high-pressure manifold 14.
The rotary drilling system 1 mainly comprises a motor 1-1, a hydraulic cylinder 1-2, a guide rod 1-3, a moving seat 1-4, a central pipe 1-5, a fixed seat 1-6 and a positioner 1-7; one end of the central tube 1-5 is connected with the motor 1-1, and the other end of the central tube is integrally installed on the movable seat 1-4 after being in threaded connection with the drill rod 3 through a drill rod buckle; the guide rods 1-3 are arranged on the two sides of the fixed seats 1-6 and then are in sliding fit with the movable seats 1-4, and the upper ends and the lower ends of the guide rods 1-3 are respectively provided with upper limit switches 1-8 and lower limit switches 1-9 to limit the strokes of the movable seats 1-4; the body of the hydraulic cylinder 1-2 is arranged on the movable seat 1-4, and the piston end of the hydraulic cylinder is arranged on the fixed seat 1-6; the drill rods 3 are connected through drill rod threaded buckles to form a drill string, the drill rod 3 at the foremost end is connected with a rotary guiding tool 7 through the threaded buckles, and the front end of the rotary guiding tool is connected with a drill bit 9 through the threaded buckles. The fixed seats 1-6 are fixed on the ground through bolts. The hydraulic cylinder 1-2 extends out and retracts to drive the movable seat 1-4, the motor 1-1 and the central pipe 1-5 to move up and down along the guide rod 1-3, when the hydraulic cylinder 1-2 retracts to drive the movable seat 1-4, the motor 1-1 and the central pipe 1-5 to move down along the guide rod 1-3, a drilling test can be carried out, drilling pressure is applied to a test system, and after the movable seat 1-4 touches the lower limit switch 1-9, a drilling test is completed. The hydraulic cylinder 1-2 extends out to drive the movable seat 1-4, the motor 1-1 and the central pipe 1-5 to move upwards along the guide rod 1-3, and the movable seat stops after touching the upper limit switch 1-8, so that a single drill rod can be connected. The motor 1-1 rotates to drive the central pipe 1-5 to rotate, so that the drill rod 3 is driven to rotate, and the rotation torque can be provided for the test system.
The shaft system 2 is mainly formed by arranging a well mouth shaft 2-4, an inclined straight section shaft 2-1, a bent section shaft 2-2 and a horizontal section shaft 2-3 from high to low in sequence and connecting the shafts in a tangent sealing manner and then is supported by a shaft support 4, a discharge port 2-3-1 is arranged at the tail end of the horizontal section shaft 2-3, and a shaft flange 2-3-2 is arranged at the tail end port of the horizontal section shaft 2-3. The shaft system 2 adopts an oil casing pipe to model a well body structure, the bending section shaft 2-2 adopts an oil casing pipe to be bent and prefabricated according to a pre-designed bending radius, and the shaft support 4 adopts a truss structure welded by section steel. The well mouth shaft 2-4, the inclined straight section shaft 2-1, the bending section shaft 2-2 and the horizontal section shaft 2-3 are connected through a convex flange, a concave flange, an O-shaped sealing ring, a high-strength double-end stud and a high-strength nut. The shaft support 4 is mounted on the ground.
The stratum simulation system 6 is formed by combining a plurality of same modules which are prefabricated and formed by cement and broken stones according to a proportion, and the modules at the head part are provided with pre-embedded flanges 6-1 and a plurality of well mouths. The stratum simulation system 6 is connected with the shaft hole flange 2-3-2 arranged at the tail end port of the horizontal section shaft 2-3 through the embedded flange 6-1 by bolts, so that the shaft hole system 2 and the stratum simulation system 6 are integrated.
The coiled tubing 12 is provided with a plurality of groups, and each group is switched on or off through a stop valve 13. The length of each coil of the coiled tubing 12 is a fixed value, the number of coils of the coiled tubing 12 is determined according to the depth of the simulated drilling, and the plurality of coiled tubing 12 are connected in series by opening or closing the stop valve 13 to meet the requirement of the required simulated drilling depth. The coiled tubing 12 is connected with the central pipes 1-5 of the rotary drilling system 1 through a high-pressure manifold 14, and the drilling fluid is subjected to pressure rise through a mud pump 11 and enters the central pipes 1-5 through the coiled tubing 12 and the high-pressure manifold 14.
The test matching system comprises a purification circulating system 8 which is connected to the tail end of a shaft system 2 and then connected with a slurry pump 11 through a filling pump 9, the outlet of the slurry pump 11 is communicated with a continuous oil pipe 12, and the outlet of the continuous oil pipe 12 is communicated with central pipes 1-5 of a rotary drilling system 1 through a high-pressure manifold 14. A perfusion pump 9 is arranged between the mud pump 11 and the circulation tank 8-3, and the perfusion pump 9 is connected with the circulation tank 8-3 and the mud pump 11 through a low-pressure pipeline 10. Drilling fluid can be circulated by a priming pump 9 through a low pressure line 10 directly to the suction inlet of a mud pump 11.
The purification circulating system 8 mainly comprises a settling tank 8-1, a vibrating screen 8-2 and a circulating tank 8-3; the vibrating screen 8-2 is arranged above the settling tank 8-1, the settling tank 8-1 is arranged adjacent to the circulating tank 8-3, and the middle of the settling tank is provided with a baffle 8-4; a discharge port 2-3-1 at a horizontal section of a shaft 2-3 in the shaft system 2 is communicated with a vibrating screen 8-2 through a hose 7; the central pipes 1-5 and the drill rod 3 adopt hollow structures, and drilling fluid can flow through the middle of the hollow structures. The outer surfaces of the drill string, the rotary steering tool 7 and the drill bit 9, which are connected with each other by the drill pipe 3, and the inner surfaces of the stratum simulation system 6 and the shaft system 2 form an annular space 15, and high-pressure drilling fluid enters the drill pipe 3 from the central pipe 1-5, passes through the rotary steering tool 7 and the drill bit 9, and then flows out from a discharge port 2-3-1 arranged on the shaft system 2 through the annular space 15 to enter the vibrating screen 8-2.
The drilling fluid discharged from a discharge port 2-3-1 arranged on a horizontal section shaft 2-3 can pass through a flexible pipe 7 and a vibrating screen 8-2 to remove rock debris, then enters a settling tank 8-1 for precipitation, and when the drilling fluid is over the height of a baffle 8-4 arranged between the settling tank 8-1 and a circulating tank 8-3, the clean drilling fluid after precipitation is finished enters the circulating tank 8-3.
The invention discloses a test matching system of a rotary steering drilling system, which aims to meet the requirement of ground simulation test of rotary steering products and integrally improves the test capability of the test system of the rotary steering drilling system. The working process can be simplified as follows:
preparation work before the test: before a drill stem is put into the well, a drill bit 9, a rotary steering tool 7 and a drill stem 3 are connected in advance and are arranged in a shaft system 2, a joint is exposed, a hydraulic cylinder 1-2 of the rotary drilling system 1 extends out to drive a moving seat 1-4, a motor 1-1 and a central pipe 1-5 to move upwards along a guide rod 1-3, the moving seat stops after touching an upper limit switch 1-8, and a single drill stem can be connected. The drill pipe 3 is used to connect the drill pipe exposed to the wellbore system 2 to the base pipes 1-5 of the rotary drilling system 1. At this time, a drilling fluid circulation passage is established from the outlet of the mud pump 11 → the coiled tubing 12 → the high pressure manifold 14 → into the central tube 1-5 → the drill rod 3 → the rotary steerable tool 7 → the drill bit 9 → the annular control 8 → the hose 7 → the vibrating screen 8-2 → the settling tank 8-1 → the circulation tank 8-3 → the low pressure line 10 → the perfusion pump 9 → the inlet of the mud pump 11.
The drill rod 3 is put in: applying force (called weight on bit for short) on the head of the drill rod 3, the drill rod 3 can be lowered from the wellhead devices 2-4, the lowered drill rods are connected to form a drill string, and the drill rod with standard length or the drill rod with specified length can be lowered each time according to the process requirement. When the hydraulic cylinder 1-2 of the rotary drilling system 1 retracts, the drill rod 3 drives the moving seat 1-4, the motor 1-1 and the central pipe 1-5 to move downwards along the guide rod 1-3, the drill rod 3 is pushed to move downwards in the shaft system 2, and the drill bit 9 and the rotary guide tool 7 are pushed to reach the wellhead position of the stratum simulation system 6 through the inclined straight section shaft 2-1, the bent section shaft 2-2 and the horizontal section shaft 2-3.
And (3) a rotary drilling process: after the preparation work is finished, the test is started, the control system sends an instruction to the motor 1-1 of the rotary drilling system 1, the motor 1-1 rotates to drive the central pipe 1-5 to rotate, the drill rod 3 is driven to rotate to drive the rotary guiding tool 7 and the drill bit 9 to rotate, the control system sends an instruction, when the hydraulic cylinder 1-2 of the rotary drilling system 1 retracts, the movable seat 1-4 together with the motor 1-1 and the central pipe 1-5 can move downwards along the guide rod 1-3 to push the drill rod 3 to move downwards, and at the moment, the drill rod 3 simultaneously rotates and moves downwards to drive the drill bit 9 to rotatably drill in the stratum simulation system 6.
During the test, the control system sends a command to start the mud pump 11, and the drilling fluid flows from the outlet of the mud pump 11 → the coiled tubing 12 → the high-pressure manifold 14 → the central tube 1-5 → the drill stem 3 → the rotary steering tool 7 → the drill bit 9 → the annular control 8 → the hose 7 → the vibrating screen 8-2 → the settling tank 8-1 → the circulation tank 8-3 → the low-pressure pipeline 10 → the injection pump 9 → the inlet of the mud pump 11, so that the system circulation of the drilling fluid is formed. On one hand, a drill bit and tools are cooled, on the other hand, rock debris in drilling engineering is taken away, drilling fluid containing the rock debris enters the purification circulation system through the annular space 8 and the hose 7, then enters the circulation tank 8-1 after being precipitated through the settling tank 8-1, and then enters the inlet of the mud pump 11 from the low-pressure pipeline 10 through the filling pump 9 to circularly flow.
In the whole test process, when a certain drilling ruler is drilled, namely the hydraulic cylinder 1-2 of the rotary drilling system 1 retracts, the movable base 1-4, the motor 1-1 and the central pipe 1-5 are driven to move downwards along the guide rod 1-3, after the lower limit switch 1-9 is touched, the control system sends a stop signal instruction, the hydraulic cylinder 1-2 stops moving, the motor 1-1 stops rotating, and a drilling test is completed. The control system sends a starting signal to the hydraulic cylinder 1-2, the hydraulic cylinder 1-2 of the rotary drilling system 1 extends out to drive the movable seat 1-4, the motor 1-1 and the central pipe 1-5 to move upwards along the guide rod 1-3, and after touching the upper limit switch 1-8, the control system sends a stopping signal, the hydraulic cylinder 1-2 stops moving, and a single drill rod 3 can be connected. Therefore, the drill pipe is rotated to drill, and a single drill pipe is replaced until the whole test is completed.
The whole test process is characterized in that the annular space is closed to form a closed loop, the drilling fluid flows in the closed loop, the rock debris is removed through the purification and circulation system 8, and the circulation fluid is recycled, so that the energy-saving environment-friendly annular space drilling fluid is energy-saving and environment-friendly and has no pollution.
The oil field drilling working condition is simulated through the rotary drilling stratum simulation system 6, the flow, the pressure drop, the applied drilling pressure and the bearing torque of the rotary guiding tool 7 are measured by carrying out simulation tests to verify that the rotary guiding tool is at different rotating speeds, the mutual relation is established, technical support is provided for developing the rotary guiding tool, and the quality of the rotary guiding tool can be evaluated according to requirements.
The pressure drop and the flow range of the rotary guiding tool are measured in the whole test process, a technical basis is provided for the research and development of rotary guiding tool products, and the product quality evaluation is carried out.
When the upper limit switch 1-8 and the lower limit switch 1-9 are touched, the upper limit switch 1-8 and the lower limit switch 1-9 send opening and closing amounts to the P L C controller to control the starting and stopping of the motor 1-1 and the extending and retracting of the hydraulic cylinder.
Claims (7)
1. A rotary steering drilling system test matching system is characterized in that: the test matching system mainly comprises a rotary drilling system (1), a shaft system (2), a stratum simulation system (6) and a continuous oil pipe (12); the rotary drilling system (1) applies bit pressure and provides rotary torque to the test system during testing, the shaft system (2) and the coiled tubing (12) are both structures simulating a well bore, and the stratum simulation system (6) simulates a stratum rock structure; the rotary drilling system (1) is connected with the shaft system (2) into a whole through a locator (1-7) on the rotary drilling system and a flange of a wellhead shaft (2-4); and the end port of the shaft system (2) is connected with a flange of the stratum simulation system (6), the outlet of the slurry pump (11) is communicated with a coiled tubing (12), and the outlet of the coiled tubing (12) is communicated with a central pipe (1-5) of the rotary drilling system (1) through a high-pressure manifold (14).
2. The rotary steerable drilling system test kit of claim 1, wherein: the rotary drilling system (1) mainly comprises a motor (1-1), a hydraulic cylinder (1-2), a guide rod (1-3), a moving seat (1-4), a central pipe (1-5), a fixed seat (1-6) and a positioner (1-7); one end of the central pipe (1-5) is connected with the motor (1-1), and the other end of the central pipe is integrally arranged on the movable seat (1-4) after being connected with the drill rod (3); the guide rods (1-3) are arranged on the two sides of the fixed seats (1-6) and then are in sliding fit with the movable seats (1-4), and the upper ends and the lower ends of the guide rods (1-3) are respectively provided with upper limit switches (1-8) and lower limit switches (1-9) to limit the stroke of the movable seats (1-4); the hydraulic cylinder (1-2) body is arranged on the movable seat (1-4), and the piston end of the hydraulic cylinder is arranged on the fixed seat (1-6); the drill rods (3) are connected through drill rod thread buckles to form a drill string, the drill rod (3) at the foremost end is connected with a rotary guiding tool (7) through the thread buckles, and the front end of the rotary guiding tool is connected with a drill bit (9) through the thread buckles.
3. The rotary steerable drilling system test kit of claim 1, wherein: the shaft system (2) is mainly formed by arranging a shaft opening shaft (2-4), an inclined straight section shaft (2-1), a bending section shaft (2-2) and a horizontal section shaft (2-3) from high to low in sequence and connecting the shafts in a tangent sealing manner, and then is supported by a shaft support (4), a discharge opening (2-3-1) is arranged at the tail end of the horizontal section shaft (2-3), and a shaft opening flange (2-3-2) is arranged at the tail end port of the horizontal section shaft (2-3).
4. The rotary steerable drilling system test kit of claim 1, wherein: the stratum simulation system (6) is formed by combining a plurality of same modules which are prefabricated and formed by cement and broken stone according to a proportion, and the modules at the head part are provided with pre-embedded flanges (6-1) and a plurality of wellheads.
5. The rotary steerable drilling system test kit of claim 1, wherein: the coiled tubing (12) is provided with a plurality of groups, and each group is switched on or off through a stop valve (13).
6. A rotary steerable drilling system test kit according to any of claims 1 to 5, wherein: the test matching system comprises a purification circulating system (8), wherein the purification circulating system is connected to the tail end of a shaft system (2) and then is connected with a mud pump (11) through a filling pump (9), the outlet of the mud pump (11) is communicated with a coiled tubing (12), and the outlet of the coiled tubing (12) is communicated with a central pipe (1-5) of the rotary drilling system (1) through a high-pressure manifold (14).
7. The rotary steerable drilling system test kit of claim 6, wherein: the purification circulating system (8) mainly comprises a settling tank (8-1), a vibrating screen (8-2) and a circulating tank (8-3); the vibrating screen (8-2) is arranged above the settling tank (8-1), the settling tank (8-1) is arranged adjacent to the circulating tank (8-3), and a baffle (8-4) is arranged in the middle; a discharge port (2-3-1) at the position of a horizontal section shaft (2-3) in the shaft system (2) is communicated with a vibrating screen (8-2) through a hose (7); the central pipes (1-5) and the drill rod (3) adopt hollow structures, and drilling fluid can flow through the middle; the drill string, the rotary guiding tool (7) and the outer surface of the drill bit (9) which are connected with each other through the drill rod (3) form an annular space (15) with the inner surfaces of the stratum simulation system (6) and the shaft system (2), and high-pressure drilling fluid enters the drill rod (3) from the central pipe (1-5), passes through the rotary guiding tool (7) and the drill bit (9), flows out of a discharge opening (2-3-1) arranged on the shaft system (2) through the annular space (15) and enters the vibrating screen (8-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010268943.8A CN111441717A (en) | 2020-04-08 | 2020-04-08 | Rotary steering drilling system test matching system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010268943.8A CN111441717A (en) | 2020-04-08 | 2020-04-08 | Rotary steering drilling system test matching system |
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| CN111441717A true CN111441717A (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010268943.8A Pending CN111441717A (en) | 2020-04-08 | 2020-04-08 | Rotary steering drilling system test matching system |
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| CN (1) | CN111441717A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412337A (en) * | 2020-11-30 | 2021-02-26 | 中国海洋石油集团有限公司 | Sliding guide drilling tool face angle change experiment system and using method thereof |
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2020
- 2020-04-08 CN CN202010268943.8A patent/CN111441717A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412337A (en) * | 2020-11-30 | 2021-02-26 | 中国海洋石油集团有限公司 | Sliding guide drilling tool face angle change experiment system and using method thereof |
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