CN111594144A - Screw drill tool, vertical drilling tool test method and simulated well deviation test equipment - Google Patents

Screw drill tool, vertical drilling tool test method and simulated well deviation test equipment Download PDF

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Publication number
CN111594144A
CN111594144A CN202010423970.8A CN202010423970A CN111594144A CN 111594144 A CN111594144 A CN 111594144A CN 202010423970 A CN202010423970 A CN 202010423970A CN 111594144 A CN111594144 A CN 111594144A
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China
Prior art keywords
tool
measured
push
tested
measuring
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Chinese (zh)
Inventor
宫兆玲
于广海
孙峰
薛帅
王佳琦
徐淑彬
王宗雷
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Dezhou United Petroleum Technology Corp
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Dezhou United Petroleum Technology Corp
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Priority to CN202010423970.8A priority Critical patent/CN111594144A/en
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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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E21B47/024—Determining slope or direction of devices in the borehole
    • 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
    • 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
    • E21B7/10—Correction of deflected boreholes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts

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  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

A screw drilling tool, a vertical drilling tool test method and a simulated well deviation test device relate to the technical field of petroleum equipment, and the test device comprises a main bracket, wherein a first end of a tested tool is suspended and pivoted on the main bracket; one end of the push-pull device is connected with the main support, the other end of the push-pull device is connected with the measured tool, and the push-pull device is used for pushing or pulling the measured tool to enable the measured tool to incline; and the angle measuring device is connected with the measured tool and used for measuring the offset distance of the second end of the measured tool. The test method comprises the following steps: hanging and pivoting a first end of a tool to be measured on a main support; pushing or pulling the second end of the measured tool to make the measured tool deflect; measuring the offset distance of the second end of the measured tool; and calculating the deflection angle of the measured tool according to the deflection distance. The test equipment and the test method can enable the tested tool to incline at different angles and simulate the working condition that the tested tool deviates from a vertical plane due to the inclination of the well wall.

Description

Screw drill tool, vertical drilling tool test method and simulated well deviation test equipment
Technical Field
The invention relates to the technical field of petroleum equipment, in particular to a screw drilling tool, a vertical drilling tool testing method and simulated well deviation testing equipment.
Background
Along with the vertical drilling requirements of easily inclined strata such as high and steep structures, large inclination angles and the like in oil and gas development, the development of an underground inclination prevention and correction acceleration tool is accelerated, and the inclination prevention and correction capability of the newly developed tool needs to be verified. However, finding a suitable test well for tool testing has long cycle time and high cost, and the influence of the well inclination angle on the tool deviation correcting capability is not easy to measure.
Therefore, it is necessary to design a screw drill, a vertical drilling tool testing method and a simulated well deviation testing device, so that the tool to be tested can be inclined at different angles, and the working condition that the tool to be tested deviates from the vertical plane due to the inclination of the well wall can be simulated.
Disclosure of Invention
The invention provides a screw drill, a vertical drilling tool test method and simulated well deviation test equipment aiming at the technical problems in the prior art, and the method and the equipment can enable a tested tool to incline at different angles and simulate the working condition that the tested tool deviates from a vertical plane due to the inclination of a well wall.
In order to achieve the above technical object, an embodiment of the present invention provides a simulated well deviation testing apparatus, including:
the main bracket is hung at the first end of the tool to be measured and is pivoted with the main bracket;
one end of the push-pull device is connected with the main support, the other end of the push-pull device is connected with the tested tool, and the push-pull device is used for pushing or pulling the tested tool to enable the tested tool to incline; and
and the angle measuring device is connected with the measured tool and is used for measuring the offset distance of the second end of the measured tool.
Preferably, the simulated well deviation testing apparatus further comprises:
and the control unit is respectively connected with the push-pull device and the angle measuring device and used for calculating the deflection angle of the measured tool according to the deflection distance and controlling the push-pull device to push or pull the second end of the measured tool so that the deflection angle reaches a set deflection angle.
Preferably, the simulated well deviation testing apparatus further comprises:
the deviation correcting force measuring device is arranged on the measured tool and is used for measuring a deviation correcting force value generated by the leaning block under the set deviation angle of the measured tool;
the control unit is connected with the deviation correcting force measuring device and used for obtaining the deviation correcting force value.
Preferably, the deviation correcting force measuring apparatus includes:
the mounting rack is fixedly connected with the tested tool;
the force measuring unit, with mounting bracket fixed connection, the force measuring unit includes jackscrew, sensor support and force cell, the sensor support with mounting bracket fixed connection, force cell with the sensor leg joint, the one end of jackscrew with force cell connects, and the other end extends to the outside of sensor support.
Preferably, the simulated well deviation testing apparatus further comprises:
the circulating system is connected with the inflow end of the tested tool and is used for conveying fluid to the tested tool;
and the pressure building device is connected with the outflow end of the tested tool and is used for increasing the fluid pressure of the outflow end of the tested tool.
Preferably, the push-pull device comprises a hydraulic oil cylinder, a cylinder of the hydraulic oil cylinder is pivoted with the main bracket, and a piston rod of the push-pull device is pivoted with the measured tool;
the angle measuring device comprises a displacement sensor, and the displacement sensor is used for measuring the extension variation of a piston rod of the hydraulic oil cylinder.
The invention also provides a drilling tool testing method, which mainly comprises the following steps:
hanging and pivoting a first end of a tool to be measured on a main support;
pushing or pulling a second end of the tool to be measured to enable the tool to be measured to deflect;
measuring an offset distance of a second end of the measured tool;
calculating the deflection angle of the measured tool according to the deflection distance;
and controlling the deflection angle to reach a set deflection angle.
Preferably, the deflection angle is:
Figure BDA0002497976630000031
wherein, α is the deflection angle, L is the distance between the pivot point of the first end of the measured tool and the measuring point of the second end, and X is the deflection distance of the measuring point of the second end of the measured tool.
Preferably, pushing or pulling the second end of the tool under test causes the tool under test to deflect specifically:
and pushing or pulling the second end of the tool to be tested by using a push-pull device to deflect the tool to be tested.
Preferably, the first and second electrodes are formed of a metal,
X＝B-A
wherein A is the original length of the push-pull device; and B is the length of the push-pull device after the measured tool deflects.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
the test method and the test equipment push and pull the tested tool through the push-pull device, so that the tested tool is inclined at different deflection angles to simulate the working condition that the tool is deviated from a vertical plane due to the inclination of a well wall.
Further, in the embodiment of the invention, a top platform is arranged at the top of the main support, and a U-shaped groove which extends in the horizontal direction and is open at one end is arranged on the top platform. And two sides of the U-shaped groove are respectively provided with a suspension mechanism, and the circular holes of the two suspension mechanisms are arranged coaxially. When the tested tool is installed and disassembled through the U-shaped groove structure, the hoisting height of the tested tool is larger than the length of the tested tool, the tested tool does not need to be lifted to the position where the lower end of the tested tool is higher than the top platform, the requirement on the height of hoisting equipment is lowered, and the working efficiency is improved.
Furthermore, the semi-open type suspension mechanism is matched with a rotating shaft on the tool connecting tool for use, so that the tool to be tested can be conveniently installed, and the swinging of the tool to be tested can be realized.
And further, the hydraulic oil cylinder provides a push-pull force to the tested tool, and the push-pull force can enable the tool connecting tool provided with the tested tool to rotate in the semi-open type suspension mechanism, so that the tested tool swings and deviates a certain angle from a vertical plane.
Furthermore, the angle measuring device can simply, quickly and accurately obtain the deflection angle by measuring the length of the dark place corresponding to the deflection angle of the measured tool.
Still further, the deviation correcting force measuring device is installed on the measured tool and swings together with the tool, so that the measuring direction of the force measuring sensor is always consistent with the moving direction of the pushing block, and further deviation correcting force data can be accurately measured.
Drawings
FIG. 1 is a front view of a simulated drilling well deviation test apparatus of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic structural diagram of a suspension mechanism of the present invention.
Fig. 4 is a left side view of fig. 3.
Fig. 5 is a top view of fig. 3.
Figure 6 is a schematic view of a push-pull device according to the present invention.
Fig. 7 is a top view of fig. 6.
Fig. 8 is a schematic view of an installation structure of the deviation rectifying force measuring device of the present invention.
Fig. 9 is a sectional view a-a in fig. 8.
Fig. 10 is a sectional view taken along line B-B in fig. 8.
FIG. 11 is a schematic view of a force cell according to the present invention.
FIG. 12 is a schematic flow chart of an assay method of the present invention.
Fig. 13 is a schematic view of the principle of angle measurement of the present invention.
Description of the reference numerals
1, a main bracket; 2, a hanging mechanism; 3, connecting a tool with a tool; 4, a tool to be tested; 5, a push-pull device; 6 an angle measuring device; 7, a deviation rectifying force measuring device; 8, a circulating system; 9, a pressure building device; 10 a top platform; 101U-shaped grooves; 11, a tool main body; 12 a rotating shaft; 13 hanging the support; 14 hanging a top cover; 15 hanging a pin shaft; 16 tool fixing clip; 17 a fixing pin; 18 hydraulic cylinders; 19 cylinder base; 20 oil cylinder support frames; 21 a pull cord displacement sensor; a 22T-bolt; 23 a force measuring unit; 24 a first mounting plate; 25 a second mounting plate; 26, mounting a frame; 27 connecting bolts; 28, fixing a bolt sleeve; 29, jacking a screw; 30 a force measuring module; 31 a disc spring; 32 guide sleeves; 33 a sensor holder; 34 a guide key; 35 a sensor mounting plate; 36 force measuring nuts; 37 a force sensor; 38 a thrust bearing; 39 adjusting the screw; 40 rear end cap.
Detailed Description
Other objects and advantages of the present invention will become apparent from the following explanation of the preferred embodiments of the present application.
FIG. 1 is a front view of a simulated drilling well deviation test apparatus of the present invention. Fig. 2 is a side view of fig. 1.
As shown in fig. 1 and 2, the simulated well deviation testing equipment comprises a main support 1, a push-pull device 5 and an angle measuring device 6. Wherein, the first end pin shaft of the measured tool 4 is connected to the main bracket 1. One end of the push-pull device 5 is connected with the main bracket 1, and the other end is connected with the tested tool 4. The push-pull device 5 is used for pushing or pulling the measured tool 4 to enable the measured tool 4 to deflect. The angle measuring device 6 is connected with the measured tool 4 and is used for measuring the offset distance of the second end of the measured tool 4.
Specifically, the main support 1 is vertical, and can better simulate the actual working state of the measured tool 4 relative to a horizontal support, and the occupied area is smaller. The main support 1 may be formed by welding profiles, for example, and the bottom of the main support 1 is fixedly connected with the ground. A ladder stand can be arranged on the main bracket 1, so that an operator can conveniently climb to the top of the main bracket 1 to install or dismantle the tool 4 to be tested.
The tool 4 to be measured may be a well tool used downhole, such as a screw drill or a vertical well tool.
The upper end of the tested tool 4 is hung on the main bracket 1. Specifically, the top end of the tested tool 4 is connected with the tool connecting tool 3, the tool connecting tool 3 is connected with the suspension mechanism 2 through a pin shaft, and the suspension mechanism 2 is fixed to the top of the main support 1. Therefore, the pin connection of the tool 4 to be tested and the main support 1 is realized. In a natural state, the tool 4 to be measured is in a vertical state.
When the measured tool 4 is a vertical drilling tool, a deviation correcting force measuring device 7 is also installed at the position corresponding to the pushing block of the vertical drilling tool. When the vertical drilling tool is inclined, the pushing blocks of the high edge of the vertical drilling tool extend outwards to keep the vertical drilling tool in a vertical downward drilling direction. The deviation correcting force measuring device 7 is used for measuring the deviation correcting force generated by the pushing block under the inclined state of the vertical drilling tool.
As shown in fig. 2, one end of a push-pull device 5 is connected to the main support 1, and the other end is connected to the tool 4 to be measured, and the push-pull device 5 is used for pushing or pulling the tool 4 to be measured to deflect the tool 4 to be measured. The push-pull device 5 may be, for example, a hydraulic cylinder, an electric push rod, or the like. Since the upper end of the measured tool 4 is connected to the top of the main bracket 1 through the suspension mechanism 2, the push-pull device 5 can push the measured tool 4 to deflect. An angle measuring device 6 is also mounted on the push-pull device 5, and the angle measuring device 6 is used for measuring the offset distance of the lower end of the tool 4 to be measured.
In some embodiments, the test apparatus further comprises a circulation system 8 and a pressure build-up device 9. The circulation system 8 is connected with the inflow end of the tested tool 4 and is used for conveying fluid to the tested tool 4. The pressure building device 9 is connected with the outflow end of the measured tool 4 and used for increasing the fluid pressure of the outflow end of the measured tool 4. The circulation system 8 may include, for example, a pump and a pipeline, and an outlet of the pump is connected to an inflow end of the tool 4 to be measured through the pipeline. The pump may be, for example, a mud pump or a plunger pump. The pipeline can be a metal or non-metal pipeline, for example. The pressure build-up device 9 may be a valve, for example. When the pump works, the pump injects fluid into the inflow end of the tested tool 4 through the pipeline. The system pressure is established at the outflow end of the tested tool 4 by adjusting the pressure-building device 9. For example, when the pressure building device 9 is a valve, the above operation can be achieved by adjusting the opening degree of the valve.
Fig. 3 is a schematic structural diagram of a suspension mechanism 2 according to the present invention. Fig. 4 is a left side view of fig. 3. Fig. 5 is a top view of fig. 3.
As shown in fig. 3, the tip of the tool 4 to be measured is seated and hung in the main body 11 of the tool connecting tool 3. Two sides of a tool main body 11 of the tool connecting tool 3 are respectively provided with a rotating shaft 12 extending in the horizontal direction, and the two rotating shafts 12 are coaxially arranged and welded with the tool main body 11 into a whole. The suspension mechanism 2 is fixed on the top of the main frame. The tool connecting tool 3 is rotatably connected with the suspension mechanism 2 through a rotating shaft 12.
As shown in fig. 4, the suspension mechanism 2 includes a suspension holder 13, a suspension top cover 14, and a suspension pin 15. The hanging support 13 and the main bracket 1 can be fixedly connected through a fastener. The suspension top cover 14 is rotatably connected with the suspension support 13 through a suspension pin 15. The top of hanging support 13 is equipped with a semicircular groove, and the bottom of hanging top cap 14 also is equipped with a semicircular groove, and two semicircular grooves can enclose and close the formation circular port. The circular hole is matched with a rotating shaft 12 of the tool connecting tool 3 to achieve rotatable connection. The suspension top cover 14 and the suspension support 13 are both semi-open type bearing bush structures. When the suspension top cover 14 is closed with the suspension support 13, the connection of the free ends of the two can be realized through a pin or a bolt.
As shown in fig. 5, a top platform 10 is provided on the top of the main stand 1, and a U-shaped groove 101 extending in a horizontal direction and having an open end is provided on the top platform 10. Two sides of the U-shaped groove 101 are respectively provided with a suspension mechanism 2, and the circular holes of the two suspension mechanisms 2 are arranged coaxially.
When the tested tool 4 is installed, the tool connecting tool 3 is connected with the top end of the tested tool 4, the upper end of the tested tool 4 is lifted up through the lifting equipment and the tool connecting tool 3, and the tested tool 4 enters the U-shaped groove 101 from the open end of the U-shaped groove 101. Two rotating shafts 12 of the tool connecting tool 3 are placed in semicircular grooves of a suspension support 13, a suspension top cover 14 is covered on the suspension support 13, and the suspension top cover 14 is connected with the suspension support 13 through a pin shaft.
Figure 6 is a schematic view of the push-pull device 5 according to the present invention. Fig. 7 is a top view of fig. 6.
As shown in fig. 6, the push-pull device 5 includes a tool fixing clip 16, a hydraulic cylinder 18, a cylinder base 19 and a cylinder support 20, wherein the tool fixing clip 16 is detachably connected to the tested tool 4, the tool fixing clip 16 is fixedly connected to the tested tool 4 before the test, and the tool fixing clip 16 is separated from the tested tool 4 after the test is completed. One end of the hydraulic cylinder 18 is connected to the tool fixing clip 16 via a fixing pin 17, and the other end of the hydraulic cylinder 18 is connected to a cylinder block 19 via a fixing pin 17. The oil cylinder seat 19 is connected with the main bracket 1 through an oil cylinder support frame 20.
As shown in fig. 7, the cylinder base 19 and the cylinder support bracket 20 are slidably connected to each other in the vertical direction, and the height position of the hydraulic cylinder 18 can be adjusted as necessary. In this embodiment, a rail extending in the vertical direction is provided on the cylinder support frame 20, a groove body matched with the rail is provided on the cylinder base 19, and the cylinder base 19 is connected with the cylinder support frame 20 through a T-shaped bolt 22.
In this embodiment, the angle measuring device 6 includes a displacement sensor for measuring the extension variation of the piston rod of the hydraulic cylinder. Specifically, one end of the displacement sensor is connected with the cylinder barrel of the hydraulic oil cylinder 18, and the other end of the displacement sensor is connected with the piston rod of the hydraulic oil cylinder 18, so that the displacement sensor can acquire the extension variation of the piston rod of the hydraulic oil cylinder 18. Preferably, the displacement sensor is a string displacement sensor 21.
When the measured tool 4 is a vertical drilling tool, a pushing block is arranged on the vertical drilling tool, when the vertical drilling tool inclines, the pushing block on the high side of the vertical drilling tool extends out and leans against the well wall, circulating liquid in the vertical drilling tool applies hydraulic pressure to the pushing block to press the pushing block against the well wall, the tool is centered by utilizing the reaction force of the well wall, and the maximum extending amount of the pushing block is about 10 mm.
Fig. 8 is a schematic view of an installation structure of the deviation rectifying force measuring device 7 of the present invention. Fig. 9 is a sectional view a-a in fig. 8. Fig. 10 is a sectional view taken along line B-B in fig. 8.
As shown in fig. 8 and 9, when the measured tool 4 is a vertical drilling tool, the present invention may further include an offset force measuring device 7, where the offset force measuring device 7 is used to measure the offset force generated by the pushing blocks of the measured tool 4 under different deflection angles. The deviation-correcting force measuring device 7 comprises a force-measuring cell 23, a first mounting plate 24, a second mounting plate 25 and a mounting frame 26.
The mounting bracket 26 includes first support body and second support body, and first support body and second support body symmetry set up, and first support body and second support body can be installed to measured instrument 4 through fasteners such as bolts. The first mounting plate 24 and the second mounting plate 25 are fixedly connected to the mounting frame 26. The first mounting plate 24 and the second mounting plate 25 are symmetrically disposed on both sides of the mounting frame 26. The two force measuring cells 23 are each fixedly connected to a first mounting plate 24 or a second mounting plate 25.
As shown in fig. 10, in order to improve the bearing capacity of the deviation rectifying force measuring device 7 at the force measuring point, a connecting bolt 27 and a bolt fixing sleeve 28 are further included, one end of the connecting bolt 27 is connected with the first mounting plate 24, and the other end is connected with the second mounting plate 25. The bolt fixing sleeve 28 is sleeved on the connecting bolt 27, and one end of the bolt fixing sleeve 28 abuts against the first mounting plate 24, and the other end abuts against the second mounting plate 25. Based on the structure, the thrust of the pushing block is borne through the connecting bolt 27, and the bearing capacity is high; in addition, the structure is convenient to mount and dismount.
Fig. 11 is a schematic structural view of a force measuring unit 23 according to the present invention.
As shown in fig. 11, the load cell 23 includes a sensor bracket 33 and a load cell 37. The sensor bracket 33 is connected with the first mounting plate 24 or the second mounting plate 25, the load cell 37 is mounted inside the sensor bracket 33, and the load cell 37 is used for measuring the pushing force of the pushing block of the tool 4 to be measured.
Further, the force-measuring cell 23 comprises a top wire 29, a force-measuring module 30, a disc spring 31, a sensor mounting plate 35 and an adjusting screw 39. Specifically, a receiving space is provided in the sensor holder 33, and the guide sleeve 32 is fixed to one end of the sensor holder 33 and the rear end cap 40 is fixed to the other end. The guide sleeve 32 and the rear end cover 40 are respectively connected with the sensor bracket 33 through fasteners. The load cell module 30 and the sensor mounting plate 35 are located in the accommodating space and slidably connected to the sensor bracket 33. The disc spring 31 is located between the force measuring module 30 and the sensor mounting plate 35, one end of the disc spring 31 abuts against the force measuring module 30, and the other end of the disc spring 31 abuts against the sensor mounting plate 35. The front end of the jackscrew 29 is located outside the sensor bracket 33, and the rear end of the jackscrew passes through the force measurement module 30, the disc spring 31 and the sensor mounting plate 35 in sequence and is connected with the force measurement nut 36. The tip of the jack 29 has a projection with a large diameter, which abuts against the front end surface of the load cell 30. The jack 29 thereby connects the load cell module 30, the disc spring 31, and the sensor mounting plate 35 integrally. The force measuring module 30 is slidably connected with the guide sleeve 32. The tip (protrusion) of the jack screw 29 means an end of the jack screw 29 close to the tool 4 under test, and the rear end is an end far from the tool 4 under test.
An adjusting screw 39 is screwed with the load cell 37, and the rear end of the adjusting screw 39 extends to the outside of the sensor holder 33 through a rear end cap 40. The adjusting screw 39 is rotatably connected to the rear end cap 40, and preferably, a thrust bearing 38 is provided between the adjusting screw 39 and the rear end cap 40. The load cell 37 can be pushed or pulled by rotating the adjusting screw 39 to move the load cell 37 along the central axis OO', so that the extension length of the front end of the jackscrew 29 in a natural state is adjusted to meet the test requirements of the tested tool 4.
A guide key 34 is also fixed to the outer contour of the load cell module 30 and the outer contour of the sensor mounting plate 35, which guide key 34 is able to reduce the friction between the load cell module 30 and the sensor carrier 33 or between the sensor mounting plate 35 and the sensor carrier 33.
When the measured tool 4 is in a vertical state, a gap of 2-3 mm is formed between the pushing block on the measured tool 4 and the front end face of the jackscrew 29. When the measured tool 4 deviates from the vertical state, the pushing block on the measured tool 4 extends outwards along the radial direction of the measured tool 4, the maximum extension amount is about 10mm, and the disc spring 31 is used for compensating the extension amount.
In some embodiments, the simulated well deviation testing apparatus further includes a control unit, connected to the push-pull device 5 and the angle measuring device 6, respectively, for calculating a deviation angle of the measured tool 4 according to the deviation distance, and controlling the push-pull device 5 to push or pull the second end of the measured tool 4 so that the deviation angle reaches a set deviation angle.
As shown in fig. 12, a well tool testing method mainly comprises the following steps:
s10, hanging the first end of the tool 4 to be tested and pivotally connecting to the main support 1. Generally, a hoisting device, such as a crane, a traveling crane, or the like, may be used to hoist a first end of the tool 4 under test, which is an upper end of the tool 4 under test when used for drilling operations.
S20, pushing or pulling the second end of the tool 4 to make the tool 4 to be measured deflect. For example, the push-pull device 5 may be used to push and pull a second end of the tool 4 under test, which is the lower end of the tool 4 under test when used for drilling operations. Since the first end of the tool 4 to be tested is suspended and pivoted to the top of the main support 1, the second end can rotate a certain angle around the pivot point when being pushed/pulled.
And S30, measuring the offset distance of the second end of the measured tool 4.
As shown in fig. 13, the offset distance of the second end of the measured tool 4 is X, and when the deflection angle of the measured tool 4 is small, the offset distance X can be approximately calculated by using the following formula:
X＝B-A
wherein X is the offset distance of the second end; a is the original length of the push-pull device 5; and B is the length of the push-pull device 5 after the measured tool 4 deflects.
When the push-pull device 5 is a hydraulic cylinder, the change in length of the push-pull device 5 can be measured by the pull-cord displacement sensor 21, the main body of the pull-cord displacement sensor 21 is mounted on the cylinder of the hydraulic cylinder, and the end of the pull cord of the pull-cord displacement sensor 21 is mounted on the free end of the piston rod. When the measured tool 4 is in a vertical state, the original length A of the push-pull device 5 can be measured; when the tool 4 to be measured generates the deflection angle α, the length of the push-pull device 5 is changed to B accordingly.
And S40, calculating the deflection angle of the measured tool 4 according to the deflection distance.
As shown in fig. 13, the above-mentioned deflection angle can be obtained by approximate calculation using the following formula:
Figure BDA0002497976630000101
wherein α is the deflection angle, L is the distance between the pivot point of the first end of the measured tool 4 and the measurement point of the second end, and X is the offset distance of the measurement point of the second end of the measured tool 4.
As a preferred embodiment, in order to test the deviation correction force value of the push block of the tested tool 4 on the high side of a specific angle, after the step of calculating the deviation angle of the tested tool 4 according to the deviation distance, the method further comprises:
and S50, controlling the deflection angle to reach a set deflection angle.
Specifically, the control unit may employ a PLC. The control unit is respectively connected with the stay cord displacement sensor and the hydraulic system, when the deflection angle is smaller than a set deflection angle, the control unit controls the piston rod of the hydraulic oil cylinder to continuously extend out through the hydraulic system, and when the deflection angle reaches the set deflection angle, the control unit controls the piston rod of the hydraulic oil cylinder to keep the position through the hydraulic system.
When the deflection angle reaches the set deflection angle, the circulating system 8 and the pressure building device 9 are started, part of the pushing block of the measured tool 4 extends out, the jackscrew 29 in the deviation rectifying force measuring device 7 abuts against the outer end face of the pushing block, and the jackscrew 29 transmits the pushing force to the force measuring sensor 37 through the force measuring module 30, the disc spring 31 and the sensor mounting plate 35 in sequence. The load cell 37 is connected to the control unit so that the control unit obtains the thrust value at the set drift angle, i.e. the tool deflection force data, from the load cell 37.
The apparatus of the present application has been described in detail with reference to the preferred embodiments thereof, however, it should be noted that those skilled in the art can make modifications, alterations and adaptations based on the above disclosure without departing from the spirit of the present application. The present application includes the specific embodiments described above and any equivalents thereof.

Claims (10)

1. A simulated well deviation test apparatus, comprising:
the main bracket is hung at the first end of the tool to be measured and is pivoted with the main bracket;
one end of the push-pull device is connected with the main support, the other end of the push-pull device is connected with the tested tool, and the push-pull device is used for pushing or pulling the tested tool to enable the tested tool to incline; and
and the angle measuring device is connected with the measured tool and is used for measuring the offset distance of the second end of the measured tool.
2. The simulated well deviation testing apparatus of claim 1,
the simulated well deviation test device further comprises:
and the control unit is respectively connected with the push-pull device and the angle measuring device and used for calculating the deflection angle of the measured tool according to the deflection distance and controlling the push-pull device to push or pull the second end of the measured tool so that the deflection angle reaches a set deflection angle.
3. The simulated well deviation testing apparatus of claim 2,
the simulated well deviation test device further comprises:
the deviation correcting force measuring device is arranged on the measured tool and is used for measuring a deviation correcting force value generated by the leaning block under the set deviation angle of the measured tool;
the control unit is connected with the deviation correcting force measuring device and used for obtaining the deviation correcting force value.
4. The simulated well deviation testing apparatus of claim 3,
the deviation correcting force measuring device comprises:
the mounting rack is fixedly connected with the tested tool;
the force measuring unit, with mounting bracket fixed connection, the force measuring unit includes jackscrew, sensor support and force cell, the sensor support with mounting bracket fixed connection, force cell with the sensor leg joint, the one end of jackscrew with force cell connects, and the other end extends to the outside of sensor support.
5. The simulated well deviation testing apparatus of claim 1,
the simulated well deviation test device further comprises:
the circulating system is connected with the inflow end of the tested tool and is used for conveying fluid to the tested tool;
and the pressure building device is connected with the outflow end of the tested tool and is used for increasing the fluid pressure of the outflow end of the tested tool.
6. The simulated well deviation testing apparatus of claim 1,
the push-pull device comprises a hydraulic oil cylinder, a cylinder barrel of the hydraulic oil cylinder is pivoted with the main bracket, and a piston rod of the push-pull device is pivoted with the tested tool;
the angle measuring device comprises a displacement sensor, and the displacement sensor is used for measuring the extension variation of a piston rod of the hydraulic oil cylinder.
7. A well drilling tool test method is characterized by mainly comprising the following steps:
hanging and pivoting a first end of a tool to be measured on a main support;
pushing or pulling a second end of the tool to be measured to enable the tool to be measured to deflect;
measuring an offset distance of a second end of the measured tool;
calculating the deflection angle of the measured tool according to the deflection distance;
and controlling the deflection angle to reach a set deflection angle.
8. The well tool testing method of claim 6,
the deflection angle is:
Figure FDA0002497976620000021
wherein, α is the deflection angle, L is the distance between the pivot point of the first end of the measured tool and the measuring point of the second end, and X is the deflection distance of the measuring point of the second end of the measured tool.
9. The well tool testing method of claim 8, wherein pushing or pulling the second end of the tool under test deflects the tool under test by:
and pushing or pulling the second end of the tool to be tested by using a push-pull device to deflect the tool to be tested.
10. The well tool testing method of claim 9,
X＝B-A
wherein A is the original length of the push-pull device; and B is the length of the push-pull device after the measured tool deflects.
CN202010423970.8A 2020-05-19 2020-05-19 Screw drill tool, vertical drilling tool test method and simulated well deviation test equipment Pending CN111594144A (en)

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Application publication date: 20200828