CN111042804B - Magnetic signal driven mechanical positioner starting device and method - Google Patents
Magnetic signal driven mechanical positioner starting device and method Download PDFInfo
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- CN111042804B CN111042804B CN202010017944.5A CN202010017944A CN111042804B CN 111042804 B CN111042804 B CN 111042804B CN 202010017944 A CN202010017944 A CN 202010017944A CN 111042804 B CN111042804 B CN 111042804B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 33
- 230000004907 flux Effects 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 9
- 229910052744 lithium Inorganic materials 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 8
- 230000001174 ascending effect Effects 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims 2
- 230000008859 change Effects 0.000 abstract description 13
- 230000007246 mechanism Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- OLTNQSDYEIONCS-UHFFFAOYSA-N [S].O=C=O Chemical compound [S].O=C=O OLTNQSDYEIONCS-UHFFFAOYSA-N 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention provides a starting device and a starting method for a magnetic signal driven mechanical positioner, comprising a power executing component, a detection control component, a high-temperature battery component and a lower joint, wherein the lower joint, the high-temperature battery component, the detection control component and the power executing component are sequentially connected to form a tubular column, and the high-temperature battery component is respectively and electrically connected with the detection control component and the power executing component. When the invention passes through the short sleeve coupling, the mechanical positioner for opening/closing the power execution assembly is controlled by the magnetic flux change, so that the coupling can be displayed by a ground display instrument load change signal, the depth of the short sleeve is determined, and the problem that the continuous oil pipe cannot realize effective positioning on an airtight buckle sleeve well is solved.
Description
Technical Field
The invention relates to the technical field of reservoir transformation of oil and gas fields, in particular to a magnetic signal driven mechanical positioner starting device and method. The invention is one of the common downhole operation tools in the oil and gas field reservoir reconstruction operation, and is suitable for coiled tubing fracturing construction with bottom seals.
Background
The coiled tubing is used as a conveying tool, the problems of pre-bending and stress expansion exist in the well entering process, and under the condition of no cable, the depth correction becomes a bottleneck of operation application. The current approach is to use mechanical positioners.
The common mechanical positioner depth correcting technology is to connect the positioner to the bottom of the technological pipe column, lower the positioner to 5-6m below the short casing collar, connect the high precision force transducer and intelligent instrument to the upper end of the pipe column, and lift the pipe column to find the short casing collar. When the locator enters the short casing collar, the ground display can generate a load change signal for displaying, and the depth of the short casing can be determined at the moment. The mechanical positioner has good precision.
However, the method is only suitable for common long round thread sleeve-fastening wells, but with the development of petroleum industry, especially the development of deep wells, ultra-deep wells, high-pressure gas wells, directional wells and the exploitation of corrosive gas wells such as high sulfur carbon dioxide, the method has higher requirements on the service performance of petroleum sleeves, and the oil sleeve with API standard threaded connection (such as short, long round threads and buttress threads) is difficult to meet the production requirements in many cases, so the special threaded connection of the type is developed at home and abroad: vam-top, must, tp-cq and the like, and the special threaded connection has better anti-sticking performance and higher reliable connection strength with higher air tightness. Because the airtight buckle sleeve adopts the airtight buckle close to the metal end face for sealing, after the airtight buckle sleeve is buckled in place, the end face of the pin buckle is propped against the step face of the box buckle to form sealing, unlike the common sleeve coupling, the conventional common sleeve coupling mechanical positioner cannot realize positioning in the special airtight buckle sleeve well.
Disclosure of Invention
The invention provides a magnetic signal driven mechanical positioner starting device and a method for solving the problem that the conventional mechanical positioner for a common casing collar can not realize positioning in the airtight buckle casing well. The invention controls the pulse on/off of the electromagnetic mechanism power supply through the magnetic flux change, thereby controlling the mechanical positioner to be opened/closed so as to realize positioning.
The invention adopts the technical scheme that:
The utility model provides a magnetic signal drive machinery locator starting drive, includes power execution subassembly, detects control assembly, high temperature battery pack and lower clutch, high temperature battery pack, detect control assembly and power execution subassembly connect in order and form the tubular column, high temperature battery pack and detect control assembly and power execution subassembly and be connected electrically respectively.
The power execution assembly comprises a telescopic rod, a connector, a lead screw and a high-torque direct current motor with a planetary reducer; the telescopic rod is connected with the high-torque direct current motor with the planetary reducer through a screw rod, and the connector is arranged on the telescopic rod.
The detection control assembly at least comprises a singlechip and a magnetic positioner, and the singlechip is connected with the magnetic positioner through an electric signal.
When the magnetic locator arranged in the detection control assembly passes through the casing coupling, the magnetic flux changes to generate electromotive force, the electromotive force generated by the tool in the ascending and descending process is different, and the power execution assembly is started when the tool is judged to be in the ascending process by the singlechip.
The tool is composed of a magnetic signal driving mechanical positioner starting device and a mechanical positioner connected to the connecting head.
The high-temperature battery component is a high-temperature lithium battery, and the high-temperature lithium battery is a 150 ℃ high-temperature lithium battery.
A starting method of a magnetic signal driven mechanical positioner comprises the following specific steps: after the power execution assembly receives the starting signal, the high-torque direct current motor drives the screw rod to retract by the planetary reducer, and simultaneously drives the telescopic rod to retract, and the mechanical positioning device connected to the telescopic rod is started; when the power execution assembly receives the signal unchanged, the telescopic rod is controlled to keep the current state; when the power executing assembly receives the closing signal, the high-torque direct current motor drives the screw rod to drive the telescopic rod to reset through the planetary reducer, and the mechanical positioner connected to the telescopic rod is closed.
The beneficial effects of the invention are as follows:
The detection control component of the invention takes the change signal of magnetic flux as an intelligent control signal, thereby realizing the special function requirement of automatically controlling the intermittent operation of an electromechanical actuating mechanism.
The detection control component effectively controls the action of the power execution component, prevents the occurrence of drill sticking, and is safe and reliable.
The invention realizes stable power output to the mechanical positioner, and can ensure more accurate action and positioning of the mechanical positioner.
Further description will be made below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the drawings, reference numerals are: 1. a telescopic rod; 2. a connector; 3. a screw rod; 4. the high-torque direct current motor is provided with a planetary reducer; 5. detecting a control component; 6. a high temperature battery assembly; 7. and a lower joint.
Detailed Description
Example 1: in order to solve the problem that the conventional mechanical positioner for the ordinary casing collar can not realize positioning in the airtight buckle casing well, the invention provides a starting device and a method for driving the mechanical positioner by magnetic signals as shown in figure 1. The invention controls the pulse on/off of the electromagnetic mechanism power supply through the magnetic flux change, thereby controlling the opening/closing of the positioner to realize positioning.
The utility model provides a magnetic signal drive machinery locator starting drive, includes power execution component, detects control assembly 5, high temperature battery pack 6 and lower clutch 7, high temperature battery pack 6, detect control assembly 5 and power execution assembly connect in order and form the tubular column, high temperature battery pack 6 and detect control assembly 5 and power execution assembly and be connected electrically respectively.
The method for positioning the fracturing tool string in the casing based on the magnetic signal driving mechanical positioner starting device comprises the following specific steps: the high-temperature battery assembly 6 supplies power for the detection control assembly 5, the telescopic rod 1 is connected with a mechanical positioner, the lower joint 7 is connected with a fracturing tool string, and when the tool string is lowered to the vicinity of a target layer, the tool string is lifted up to start positioning; when the detection control assembly 5 passes through the short sleeve coupling, an opening signal is given to the high-torque direct current motor with the planetary reducer 4, the lead screw 3 is driven to retract, the connected telescopic rod 1 is driven to move upwards, and at the moment, the mechanical positioner connected with the telescopic rod 1 is started; when the detection control assembly 5 detects that the pulling force or the stroke of the telescopic rod 1 exceeds a set value, a control signal is output to control the telescopic rod 1 to keep the state for 2 seconds, and then the reset is started, and at the moment, the mechanical positioner connected with the telescopic rod 1 is closed to complete one mechanical positioning action.
The invention realizes the positioning of the target layer by identifying the sleeve wall thickness control mechanical positioner. The starting device is provided with a detection control component 5, and when the short sleeve collar passes through, the power execution component is controlled to be opened/closed by means of magnetic flux change, so that the mechanical positioner connected to the power execution component can be opened/closed, and the positioning function is realized.
The invention solves the problem of positioning the coiled tubing fracturing construction target layer in the airtight buckle casing well. The invention controls the pulse on/off of the electromagnetic mechanism power supply through the magnetic flux change, thereby controlling the opening/closing of the positioner to realize positioning.
Example 2:
based on the embodiment 1, in this embodiment, preferably, the power executing assembly includes a telescopic rod 1, a connector 2, a screw rod 3 and a high-torque direct current motor with planetary reducer 4; the telescopic rod 1 is connected with a high-torque direct current motor with a planetary reducer 4 through a lead screw 3, and the connector 2 is arranged on the telescopic rod 1.
Preferably, the detection control assembly 5 at least comprises a single chip microcomputer and a magnetic positioner, and the single chip microcomputer is connected with the magnetic positioner through an electric signal.
Preferably, when the magnetic positioner arranged in the detection control assembly 5 passes through the casing collar, the magnetic flux changes to generate electromotive force, the electromotive force generated by the tool in the ascending and descending processes is different, and the singlechip judges that the tool in the ascending process starts the power execution assembly.
According to the detection control assembly 5, the push-pull force detection function detects and sets the pulling force and the stroke of the telescopic rod 1, when the pulling force of the telescopic rod 1 exceeds the set pulling force in the retraction process of the telescopic rod, the detection control assembly 5 stops retracting the telescopic rod, and the telescopic rod is reset after the state is maintained for a certain time, so that the positioning action of the mechanical positioner is completed. The detection control component 5 has a movement direction identification function, when the tool works in the casing, the movement direction of the tool is judged according to the difference of output signals of the coupling detection module, and then the purpose that the tool only performs the recovery/holding/resetting work of the telescopic rod 1 when moving upwards is achieved.
According to the invention, the time sequence control algorithm processor in the singlechip in the detection control component 5 can set the working time of the tool in advance, namely, the tool reaches the expected position, the component is in a dormant state, and the tool starts working after waiting for the time set in advance, so that the battery power is saved.
Preferably, the tool is composed of a magnetic signal driving mechanical positioner starting device and a mechanical positioner connected to the connector 2.
The detection control component 5 provided by the invention is used for detecting the casing collar and judging the movement direction of the tool, and transmits signals to the singlechip, and the singlechip sends out instruction control signals to control the operation of the front high-torque direct current motor with the planetary reducer 4. The detection control component is internally provided with a magnetic positioner, when the magnetic flux changes to generate electromotive force through the casing coupling, the electromotive force of the tool in the ascending and descending processes is different, and the singlechip judges and identifies the electromotive force in the ascending process and controls the motor to operate.
Preferably, the high temperature battery assembly 6 is a high temperature lithium battery, and the high temperature lithium battery is a 150 ℃ high temperature lithium battery.
The high temperature battery assembly 6 of the present invention is an existing assembly, and will not be further described in the present invention.
A starting method of a magnetic signal driven mechanical positioner comprises the following specific steps: after the power executing component receives the starting signal, the high-torque direct current motor drives the screw rod 3 to retract through the planetary reducer 4, and simultaneously drives the telescopic rod 1 to retract, and the mechanical positioning device connected to the telescopic rod 1 is started; when the power execution assembly receives the signal unchanged, the telescopic rod 1 is controlled to keep the current state; when the power executing assembly receives the closing signal, the high-torque direct current motor drives the screw rod 3 to drive the telescopic rod 1 to reset through the planetary reducer 4, and the mechanical positioner connected to the telescopic rod 1 is closed.
The invention is connected with a mechanical positioner through a connector 2 during operation. The high-temperature battery assembly 6 provided by the invention provides power for the detection control assembly 5 and the power execution assembly. The detection control assembly 5 uses magnetic elements to determine the casing collar position. The high-torque direct current motor drives the screw rod 3 with the planetary reducer 4 to realize the rapid retraction/resetting action of the telescopic rod 1, and the self-locking of the screw rod 3 is used for realizing the 'holding' state of the telescopic rod after the retraction pulling force reaches the maximum value. When the invention works, when the casing collar is detected, a working signal can be generated to control the power execution assembly to start/close; the invention realizes the positioning of the target layer by identifying the sleeve wall thickness control mechanical positioner. The starting device is provided with a detection control component 5, and when the short sleeve collar passes through, the power execution component is controlled to be opened/closed by means of magnetic flux change, so that the mechanical positioning device connected to the power execution component can be opened/closed, and the positioning function is realized.
The invention solves the problem of positioning the coiled tubing fracturing construction target layer in the airtight buckle casing well. The invention controls the pulse on/off of the electromagnetic mechanism power supply through the magnetic flux change, thereby controlling the opening/closing of the positioner to realize positioning. When the invention passes through the short sleeve coupling, the mechanical positioning device for opening/closing the power execution assembly is controlled by the magnetic flux change, so that the coupling can be displayed by a ground display instrument load change signal, the depth of the short sleeve is determined, and the problem that the continuous oil pipe cannot realize effective positioning on an airtight buckle sleeve well is solved.
The invention effectively controls the action of the power execution component, prevents the occurrence of drill sticking, and is safe and reliable. The detection control component of the invention takes the change signal of magnetic flux as an intelligent control signal, thereby realizing the special function requirement of automatically controlling the intermittent operation of an electromechanical actuating mechanism. The invention realizes stable power output to the mechanical positioner, and can ensure more accurate action and positioning of the mechanical positioner.
The foregoing examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention, and all designs that are the same or similar to the present invention are within the scope of the present invention. The device structure and system method not described in detail in this embodiment are well known and commonly used in the industry and will not be described in detail.
Claims (3)
1. A method for positioning a fracturing tool string in a casing based on a magnetic signal driving mechanical positioner starting device is characterized by comprising the following steps: the magnetic signal is adopted to drive the mechanical positioner starting device, the magnetic signal is adopted to drive the mechanical positioner starting device to comprise a power executing component, a detection control component (5), a high-temperature battery component (6) and a lower connector (7), the high-temperature battery component (6), the detection control component (5) and the power executing component are sequentially connected to form a tubular column, and the high-temperature battery component (6) is respectively and electrically connected with the detection control component (5) and the power executing component; the power execution assembly comprises a telescopic rod (1), a connector (2), a lead screw (3) and a high-torque direct current motor with a planetary reducer (4); the telescopic rod (1) is connected with the large-torque direct current motor with planetary reducer (4) through a lead screw (3), and the connector (2) is arranged on the telescopic rod (1); the connector (2) is connected with a mechanical positioner; the detection control assembly (5) at least comprises a singlechip and a magnetic positioner, and the singlechip is in electric signal connection with the magnetic positioner; when the magnetic positioner arranged in the detection control assembly (5) passes through the casing coupling, the magnetic flux changes to generate electromotive force, the electromotive force generated by the tool in the ascending and descending process is different, and the singlechip judges that the tool in the ascending process starts the power execution assembly; the tool consists of a magnetic signal driving mechanical positioner starting device and a mechanical positioner connected to the connector (2);
The method for positioning the fracturing tool string in the casing based on the magnetic signal driving the mechanical positioner starting device comprises the following specific steps: the high-temperature battery assembly (6) provides power for the detection control assembly (5), the telescopic rod (1) is connected with the mechanical positioner, the lower connector (7) is connected with the fracturing tool string, and when the fracturing tool string is lowered to the vicinity of a target layer, the fracturing tool string is lifted up to start positioning; when the detection control assembly (5) passes through the short sleeve coupling, an opening signal is given to the high-torque direct current motor with the planetary reducer (4), the screw rod (3) is driven to retract, the connected telescopic rod (1) is driven to move upwards, and a mechanical positioner connected with the telescopic rod (1) is started at the moment; when the detection control assembly (5) detects that the pulling force or the stroke of the telescopic rod (1) exceeds a set value, a control signal is output to control the telescopic rod (1) to keep the state for 2 seconds, then the reset is started, and at the moment, the mechanical positioner connected with the telescopic rod (1) is closed to complete one mechanical positioning action.
2. The method for positioning a fracturing tool string in a casing based on a magnetic signal driven mechanical positioner activation device of claim 1, wherein: the high-temperature battery component (6) is a high-temperature lithium battery.
3. The method for positioning a fracturing tool string in a casing based on a magnetic signal driven mechanical positioner activation device of claim 2, wherein: the high-temperature lithium battery is a 150 ℃ high-temperature lithium battery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010017944.5A CN111042804B (en) | 2020-01-08 | 2020-01-08 | Magnetic signal driven mechanical positioner starting device and method |
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| CN202010017944.5A CN111042804B (en) | 2020-01-08 | 2020-01-08 | Magnetic signal driven mechanical positioner starting device and method |
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| CN111042804A CN111042804A (en) | 2020-04-21 |
| CN111042804B true CN111042804B (en) | 2024-04-30 |
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|---|---|---|---|---|
| JPH06238237A (en) * | 1993-02-15 | 1994-08-30 | Oki Electric Ind Co Ltd | Adjustment of prestress of vibrator |
| EP0697497A1 (en) * | 1994-08-18 | 1996-02-21 | Halliburton Company | Downhole joint locator |
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Effective date of registration: 20201030 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING Co. Address before: 710018 Shaanxi province Xi'an Weiyang Changqing Changqing prosperous Park District Building Room 1207 Applicant before: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING COMPANY LIMITED CHANGQING DOWNHOLE TECHNOLOGY Co. Applicant before: CHINA NATIONAL PETROLEUM Corp. Applicant before: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING Co. |
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