CN212958457U - Rotary steering drilling system test matching system - Google Patents
Rotary steering drilling system test matching system Download PDFInfo
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- CN212958457U CN212958457U CN202020498316.9U CN202020498316U CN212958457U CN 212958457 U CN212958457 U CN 212958457U CN 202020498316 U CN202020498316 U CN 202020498316U CN 212958457 U CN212958457 U CN 212958457U
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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 utility model discloses a rotatory stratum analog system process simulation oil field well drilling operating mode that creeps into verifies under the different rotational speeds through developing analogue test, measures the flow of rotatory steering tool, and the pressure drop, applys the weight of boring, bears the moment of torsion to establish relation each other, provide technical support for the rotatory steering tool of development.
Description
Technical Field
The utility model relates to an oil and gas bores the exploitation field, concretely relates to is the rotatory guide product of oil, natural gas drilling exploitation trade, provides indoor ground analogue test device.
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.
SUMMERY OF THE UTILITY MODEL
To this current situation, the utility model discloses an experimental supporting system of rotary steering drilling system, it needs to carry out ground simulation test to strive for to solve the rotary steering product, wholly promotes rotary steering drilling system test system's experimental ability. The industrial problem that the localization process of the rotary tool is restricted due to insufficient capability of a test system is solved.
The utility model adopts the technical proposal that:
a rotary steering drilling system test matching system is composed of 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 consists of 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 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 is supported by a shaft support, a discharge port is arranged at the tail end of the horizontal section shaft, and a shaft flange is arranged at the tail end port of the horizontal section shaft.
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, wherein the purification circulating system is connected to the tail end of a shaft system and then connected with a mud pump through a filling pump, and an outlet of the mud pump is communicated with a continuous oil pipe.
The purification circulating system consists of 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 utility model simulates the oil field drilling working condition through the rotary drilling stratum simulation system process, tests the flow of the rotary guiding tool, reduces the pressure, applies the drilling pressure and bears the torque by developing the simulation test and verifying different rotating speeds, 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 view of the annular space composition of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1, a rotary steerable drilling system test complete set system is composed of a rotary drilling system 1, a shaft system 2, a stratum simulation system 6 and a coiled tubing 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 consists of 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 formed by sequentially arranging a wellhead 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 and hermetically connecting the shafts in a tangent mode 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 a 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 mud pump 11 through a filling pump 91, the outlet of the mud 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 91 is arranged between the mud pump 11 and the circulation tank 8-3, and the perfusion pump 91 is connected with the circulation tank 8-3 and the mud pump 11 through a low-pressure pipeline 10. Drilling fluid may be circulated by a cementing pump 91 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 71; 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 71 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 utility model discloses an experimental supporting system of rotary steering drilling system, it needs to carry out ground simulation test to address rotary steering product, wholly promotes rotary steering drilling system test system's experimental ability. 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 71 → the vibrating screen 8-2 → the settling tank 8-1 → the circulation tank 8-3 → the low pressure line 10 → the perfusion pump 91 → 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 pipe 3 → the rotary steering tool 7 → the drill bit 9 → the annular control 8 → the hose 71 → the vibrating screen 8-2 → the settling tank 8-1 → the circulation tank 8-3 → the low-pressure pipeline 10 → the injection pump 91 → the inlet of the mud pump 11, so that the system circulation of the drilling fluid is formed. On one hand, the 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 71, then enters the circulation tank 8-1 after being precipitated through the settling tank 8-1, and enters the inlet of the mud pump 11 from the low-pressure pipeline 10 through the filling pump 91 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.
The control system comprises: 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 PLC to control the starting and stopping of the motor 1-1 and the extending and retracting of the hydraulic cylinder.
Claims (6)
1. A rotary steering drilling system test matching system is characterized in that: the test matching system consists of 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) consists of 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 formed by sequentially arranging a well mouth 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 and being in tangent sealing connection and then 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).
4. 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).
5. A rotary steerable drilling system test kit according to any of claims 1 to 4, wherein: the test matching system comprises a purification circulating system (8), wherein the purification circulating system is connected to the tail end of the shaft system (2) and then is connected with a mud pump (11) through a filling pump (91), and the outlet of the mud pump (11) is communicated with a continuous oil pipe (12).
6. The rotary steerable drilling system test kit of claim 5, wherein: the purification circulating system (8) consists of 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 the vibrating screen (8-2) through a hose (71); 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).
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| CN202020498316.9U CN212958457U (en) | 2020-04-08 | 2020-04-08 | Rotary steering drilling system test matching system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562229A (en) * | 2022-01-27 | 2022-05-31 | 河南理工大学 | Blowout-preventing hole combined drilling tool testing device and testing method thereof |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562229A (en) * | 2022-01-27 | 2022-05-31 | 河南理工大学 | Blowout-preventing hole combined drilling tool testing device and testing method thereof |
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