CN109356541B - Electric throwing nipple and throwing method - Google Patents
Electric throwing nipple and throwing method Download PDFInfo
- Publication number
- CN109356541B CN109356541B CN201811512247.6A CN201811512247A CN109356541B CN 109356541 B CN109356541 B CN 109356541B CN 201811512247 A CN201811512247 A CN 201811512247A CN 109356541 B CN109356541 B CN 109356541B
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- nipple
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to an electric throwing nipple and a throwing method, comprising an upper joint assembly, a motor assembly, a pressure measuring assembly and a lower throwing assembly, wherein the upper joint assembly is connected with a read-only parameter logging instrument, and the working voltage of the motor assembly is controlled through ground equipment connection; the motor assembly provides power under the control of ground equipment; the pressure measuring assembly measures the downhole pressure; the lower end throwing component is connected with the thrown instrument, and the throwing of the thrown instrument is realized under the power provided by the motor component. The invention solves the technical problems that when layering pressure measurement is carried out, the casting and fishing layering pressure gauge has large workload and can not judge whether the sealing is reliable or not.
Description
Technical Field
The invention relates to an electric throwing nipple and a throwing method.
Background
With the continuous deep development of oil fields, the water injection structure is continuously optimized, the proportion of the layered separate injection wells to the total number of wells is continuously improved, more than 95% of water injection well layers are obtained, and the number of water injection well layers subdivided in the layers is up to 8. The layering pressure measurement technology has great advantages and is more and more paid attention to, the proportion of water well layering pressure measurement in oilfield monitoring is larger and larger, and layering pressure measurement data has unique advantages.
The bridge type eccentric layered water distributor used in the current oil field uses an eccentric layered pressure gauge to salvage and put in layer by layer during layered test, so that the casting and fishing workload is very large, and whether the stratum to be tested is sealed and reliable cannot be judged in the casting and fishing process, so that the success rate of the test is low.
Disclosure of Invention
The invention provides an electric throwing nipple and a throwing method, which aim to solve the technical problems that when layering pressure measurement is carried out, the workload of throwing and fishing a layering pressure gauge is large and whether sealing is reliable cannot be judged.
The technical scheme of the invention is as follows:
the electric throwing short section is characterized by comprising an upper joint assembly, a motor assembly, a pressure measuring assembly and a lower throwing assembly,
the upper joint assembly is connected with the read-only parameter logging instrument and is connected with the working voltage of the control motor assembly through ground equipment, and the upper joint assembly comprises an upper shell and an upper joint;
the motor assembly provides power under the control of ground equipment, and comprises a control circuit, a motor shell, a screw rod and a transmission rod;
the pressure measuring assembly is used for measuring underground pressure and comprises a pressure measuring sensor and a pressure measuring sleeve, one end of the pressure measuring sleeve is sleeved on the transmission rod, the other end of the pressure measuring sleeve is sleeved on the pressure measuring sensor, and one end of the pressure measuring sleeve is fixedly connected with the motor shell;
the lower end throwing component is connected with the thrown instrument, the thrown instrument is thrown under the power provided by the motor component, and the lower end throwing component comprises a central push rod, a lower end pressure guiding sleeve and a throwing instrument locking component positioned on the lower end pressure guiding sleeve.
Further, the upper connector is connected with one end of the upper shell, the other end of the upper shell is fixedly connected with one end of the lower end pressure guiding sleeve, and the motor assembly is positioned in the upper shell; the pressure measuring assembly and the central push rod are both positioned in the lower end pressure guiding sleeve;
the motor shell is fixedly connected with the inner wall of the upper shell; the output end of the motor is connected with one end of a screw rod, and the other end of the screw rod is in threaded connection with one end of a transmission rod;
one end of the pressure measuring sensor is connected with the other end of the transmission rod, the other end of the pressure measuring sensor is positioned in a lower pressure guide channel of the central push rod, and the lower pressure guide sleeve is fixedly connected with the other end of the upper shell.
Further, the locking assembly of the throwing instrument comprises a lower end locking steel ball and a lower end movable lock sleeve, wherein the lower end pressure guiding sleeve is provided with a steel ball mounting groove, the lower end locking steel ball is positioned in the steel ball mounting groove, and the lower end movable lock sleeve is sleeved on the lower end pressure guiding sleeve and can move in the upper axial direction; the diameter of the locking steel ball at the lower end is larger than the depth of the steel ball mounting groove.
Further, the locking assembly of the throwing instrument further comprises a movable limiting groove and a pin shaft, wherein the movable limiting groove and the pin shaft are arranged on the lower end pressure guiding sleeve, the upper end of the pin shaft is fixedly connected with the lower end movable lock sleeve, and the lower end of the pin shaft penetrates through the movable limiting groove and is fixedly connected with the central push rod.
Further, the lower movable lock sleeve comprises a small-diameter section, a variable-diameter section and a large-diameter section.
Further, the electric throwing pup joint further comprises a limiting assembly, wherein the limiting assembly comprises an upper limit switch, a lower limit switch and a movable stop block, the upper limit switch and the lower limit switch are fixed on the motor shell, the movable stop block is fixed on the transmission rod, and the stroke of the movable stop block is between the upper limit switch and the lower limit switch.
Further, the device also comprises three status indication Hall elements, wherein the status indication Hall elements are arranged on the transmission rod.
Further, the locking assembly of the throwing instrument further comprises a fixed sleeve, and the fixed sleeve is sleeved on the movable lock sleeve at the lower end and is fixedly connected with the movable lock sleeve at the lower end.
The invention has the beneficial effects that:
1. the electric throwing nipple works in cooperation with direct-reading four-point parameters adopted in the existing field, underground concentric sealing test nipples are thrown into the central pipe test part of the water distributor corresponding to the test layer step by step to conduct layering test of stratum pressure, throwing is controlled by a motor, and throwing efficiency is high.
2. The electric throwing nipple provided by the invention can judge whether the test nipple is sealed reliably or not by comparing the pressure of the pressure measuring sensor with the pressure of the direct-reading four-point parameter, and the success rate of pressure measurement is improved.
Drawings
FIG. 1 is an outline view of an electric delivery nipple of the present invention;
FIG. 2 is an outline view of the electric delivery nipple of the present invention;
fig. 3 is a cross-sectional view of an electric drop nipple of the present invention.
Detailed Description
Example 1: the electric throwing nipple comprises an upper joint assembly 5, a motor assembly 6, a pressure measuring assembly 7 and a lower end throwing assembly 8, wherein the upper joint assembly is connected with a read-only parameter logging instrument, and the working voltage of the motor assembly is controlled through ground equipment connection; the motor assembly provides power under the control of ground equipment; the pressure measuring assembly measures the downhole pressure; the lower end throwing component is connected with the thrown instrument, and the throwing of the thrown instrument is realized under the power provided by the motor component.
Example 2: the upper joint assembly comprises an upper shell 501 and an upper joint 502, the upper joint 502 is an English single-core interface, is connected with a four-parameter short joint, and is used for controlling power supply voltage (cable head voltage) through the ground, when the power supply voltage is greater than 55VDC, the motor inside the motor is put in operation, and when the power supply is-50 VDC, the motor is reversed. The motor assembly comprises a control circuit 601, a motor 602, a motor housing 603, a lead screw 604 and a transmission rod 605; the pressure measuring assembly 7 comprises a pressure measuring sensor 701 and a pressure measuring sleeve 702, and one end of the pressure measuring sleeve 702 is sleeved on the transmission rod 605; the lower end throwing component 8 comprises a central push rod 801, a lower end pressure guiding sleeve 802 and a throwing instrument locking component positioned on the lower end pressure guiding sleeve; the other end of the upper shell 501 is fixedly connected with one end of the lower end pressure guiding sleeve 802, and the motor assembly is positioned in the upper shell 501; the pressure measuring assembly 7 and the center push rod 801 are positioned in the lower end pressure guiding sleeve 802; the motor housing 603 is fixedly connected with the inner wall of the upper housing 501; the output end of the motor 602 is connected with one end of a screw rod 604, and the other end of the screw rod 604 is in threaded connection with one end of a transmission rod 605;
during throwing, the downhole testing pup joint to be thrown is inserted into the lower end pressure guiding sleeve 802 of the electric throwing pup joint.
Example 3: the locking assembly of the throwing instrument comprises a lower end locking steel ball 804 and a lower end movable lock sleeve 805, wherein a steel ball mounting groove is formed in the lower end pressure guiding sleeve 802, the lower end locking steel ball 804 is positioned in the steel ball mounting groove, and the lower end movable lock sleeve 805 is sleeved on the lower end pressure guiding sleeve 802 and can axially move on the lower end pressure guiding sleeve 802; the diameter of the lower locking steel ball 804 is greater than the depth of the steel ball mounting groove.
When the power supply voltage is higher than 55VDC, the motor works, the screw rod 604 drives the transmission rod 605 to axially move, and then drives the pressure measuring sensor 701 to move together, the pressure measuring sensor 701 drives the center push rod 801 to move, the locking steel ball 804 at the lower end falls into a fixed component (namely a steel ball groove on the salvaging head) on the salvaging head of the underground test nipple to be put in, and at the moment, the locking steel ball 804 at the lower end falls into the steel ball groove of the salvaging head.
Example 4: the locking assembly of the throwing instrument further comprises a movable limiting groove 806 and a pin 807 which are arranged on the lower end pressure guiding sleeve 802, the upper end of the pin is fixedly connected with the lower end movable lock sleeve 805, and the lower end of the pin passes through the movable limiting groove 806 to be fixedly connected with the center push rod 801. The lower movable lock sleeve 805 includes a small diameter section, a variable diameter section, and a large diameter section.
Under the action of the center push rod 801, the pin shaft moves together with the lower movable lock sleeve, at this time, the top of the lower locking steel ball 804 is opposite to the small-diameter section of the lower movable lock sleeve 805, and the electric throwing nipple and the test nipple to be thrown are completely locked through the locking assembly.
Example 5: the electric throwing pup joint further comprises a limiting assembly and a state indicating Hall element, wherein the limiting assembly comprises an upper limiting switch 606, a lower limiting switch 607 and a movable stop block 608, the upper limiting switch 606 and the lower limiting switch 607 are fixed on a motor shell, the movable stop block 608 is fixed on a transmission rod 605, and the stroke of the movable stop block 608 is between the upper limiting switch 606 and the lower limiting switch 607. The state indicating Hall elements are two, and the state indicating Hall elements are arranged on the motor shell.
The drive rod 605 moves to the uppermost hall switch position, gives the instrument connection and locking signals, and the motor automatically stops rotating. At this time, the steel ball is locked in the positioning groove on the salvaging head, the end face of the central push rod 801 is tightly attached to the end face of the salvaging central rod with the put-in pressure measuring nipple, the central channel is communicated, the underground stratum pressure can be transmitted to the pressure measuring sensor through the central channel, and at this time, the instrument string can perform the well descending operation.
According to the depth of the water distributor to be put in, the motor is electrified (according to the cable head voltage of the instrument +55VDC) at a distance of about 5 meters above the water distributor, the motor continues to rotate, the central push rod 801 pushes the central rod of the underground test nipple to move, the positioning component of the test nipple is opened, the test nipple is supported on the positioning step of the water distributor, the transmission rod 605 moves to the position of the Hall element at the lowest end, and a signal for opening the positioning component is given.
The motor is powered (voltage is adjusted to +55VDC), the motor continues to rotate, the central rod is pushed to drive the sealing element of the test nipple to expand and cling to the central hole of the water distributor, and the water outlet is separated from the interior of the oil pipe. At this time, the movable stopper 608 on the transmission lever 605 moves to the lower limit switch 607.
And the pressure change of the pressure measuring sensor is observed, and meanwhile, the pressure change is compared with the pressure of the direct-reading parameter logging instrument, when the two pressure changes are different, the upper leather cup and the lower leather cup are reliably sealed, and the underground concentric sealing test nipple can be left in the well for testing.
The motor is powered by-50 VDC, the motor of the electric throwing nipple reversely rotates, the central push rod of the electric throwing nipple retracts, when the central push rod of the electric throwing nipple is positioned at the position of the upper limit switch 606, the motor automatically stops rotating (the current of the motor automatically becomes 0 mA), at the moment, the cable is lifted up, and the four-parameter nipple and the electric throwing nipple are lifted up to the ground together.
Claims (8)
1. The electric throwing nipple comprises an upper joint component (5), a motor component (6), a pressure measuring component (7) and a lower throwing component (8),
the upper joint assembly is connected with the direct-reading parameter logging instrument and is used for controlling the working voltage of the motor assembly through ground equipment, the upper joint assembly comprises an upper shell (501) and an upper joint (502), the upper joint (502) is connected with one end of the upper shell (501), the other end of the upper shell (501) is fixedly connected with one end of a lower end pressure guiding sleeve (802), and the motor assembly is positioned in the upper shell (501); the pressure measuring assembly (7) and the central push rod (801) are both positioned in the lower end pressure guiding sleeve (802);
the motor assembly provides power under the control of ground equipment and comprises a control circuit (601), a motor (602), a motor shell (603), a lead screw (604) and a transmission rod (605), wherein the motor shell (603) is fixedly connected with the inner wall of the upper shell (501); the output end of the motor (602) is connected with one end of a screw rod (604), and the other end of the screw rod (604) is in threaded connection with one end of a transmission rod (605);
the pressure measuring assembly is used for measuring underground pressure, the pressure measuring assembly (7) comprises a pressure measuring sensor (701) and a pressure measuring sleeve (702), one end of the pressure measuring sleeve (702) is sleeved on a transmission rod (605), the other end of the pressure measuring sleeve (702) is sleeved on the pressure measuring sensor (701), one end of the pressure measuring sleeve (702) is fixedly connected with a motor shell (603), one end of the pressure measuring sensor (701) is connected with the other end of the transmission rod (605), and the other end of the pressure measuring sensor (701) is positioned in a lower pressure guide channel (803) of a center push rod (801);
the lower extreme is put in the subassembly and is put in pressure measurement nipple joint and be connected, realizes being put in the input of pressure measurement nipple joint under the power that motor assembly provided, lower extreme is put in subassembly (8) and is put in including center push rod (801), lower extreme pressure guiding cover (802) and be located the lower extreme and lead the instrument locking subassembly of putting in the pressure guiding cover, lower extreme pressure guiding cover (802) and the other end fixed connection of last casing (501).
2. The electric delivery nipple of claim 1, wherein: the throwing instrument locking assembly comprises a lower end locking steel ball (804) and a lower end movable lock sleeve (805), wherein a steel ball mounting groove is formed in the lower end pressure guiding sleeve (802), the lower end locking steel ball (804) is positioned in the steel ball mounting groove, and the lower end movable lock sleeve (805) is sleeved on the lower end pressure guiding sleeve (802) and can axially move on the lower end pressure guiding sleeve (802); the diameter of the lower locking steel ball (804) is larger than the depth of the steel ball mounting groove.
3. The electric delivery nipple of claim 2, wherein: the locking assembly of the throwing instrument further comprises a moving limiting groove (806) and a pin shaft (807) which are arranged on the lower end pressure guiding sleeve (802), the upper end of the pin shaft is fixedly connected with the lower end movable lock sleeve (805), and the lower end of the pin shaft passes through the moving limiting groove (806) and is fixedly connected with the center push rod (801).
4. A power delivery sub as claimed in claim 3, wherein: the lower movable lock sleeve (805) comprises a small-diameter section, a variable-diameter section and a large-diameter section which are connected in sequence.
5. The electric delivery nipple of claim 4, wherein: the electric throwing pup joint further comprises a limiting assembly, the limiting assembly comprises an upper limiting switch (606), a lower limiting switch (607) and a movable stop block (608) fixed on a transmission rod (605), and the stroke of the movable stop block (608) is between the upper limiting switch (606) and the lower limiting switch (607).
6. The electric delivery nipple of claim 4, wherein: the motor also comprises two state indicating Hall elements, and the state indicating Hall elements (609) are arranged on the motor shell (603).
7. The electric delivery nipple of claim 6, wherein: the locking assembly of the throwing instrument further comprises a fixing sleeve (809), and the fixing sleeve (809) is sleeved on the lower-end movable lock sleeve (805) and fixedly connected with the lower-end movable lock sleeve (805).
8. An electric throwing method is characterized by comprising the following steps:
1) Instrument connection:
inserting a test nipple to be put in into a lower end pressure guiding sleeve (802) of the electric putting nipple, and connecting a direct-reading parameter logging instrument with an upper joint of the electric putting nipple;
2) Locking the test nipple and the electric throwing nipple:
the power supply is started, the motor works, the screw rod (604) drives the transmission rod (605) to axially move, and then drives the pressure measuring sensor (701) to move together, the pressure measuring sensor (701) drives the center push rod (801) to move, when the transmission rod (605) moves to the uppermost state indication Hall element, an electric throwing nipple is connected with the pressure measuring nipple and a locking signal is given, the motor automatically stops rotating, at the moment, a locking steel ball (804) at the lower end of the electric throwing nipple falls into a fixed groove of a test nipple to be thrown, the center push rod (801) is tightly attached to the end face of the center rod of the pressure measuring nipple, a center channel is the same, and the test nipple and the electric throwing nipple form an instrument string;
3) And (3) opening a positioning assembly of the test nipple:
the motor is electrified, the motor continues to rotate, the center push rod (801) pushes the center rod of the test nipple to move, the positioning assembly of the test nipple is opened, at the moment, the transmission rod moves to the position of the Hall element at the lowest end, and a signal for opening the positioning assembly is given;
4) Sealing assembly action of test nipple:
the motor is powered, the motor continues to rotate, the central push rod (801) pushes the central rod of the test nipple to move, the sealing element of the test nipple is driven to expand and cling to the central hole of the water distributor to separate the water outlet from the inside of the oil pipe, and at the moment, the movable stop block (608) on the transmission rod (605) moves to the lower limit switch (607);
5) Judging whether the sealing element is sealed reliably:
observing the pressure change of the pressure measuring sensor, comparing the pressure with the pressure on the direct-reading parameter logging instrument, and if the pressure of the pressure measuring sensor is the same as the pressure on the direct-reading four parameters, indicating that the sealing is unreliable;
if the two pressure changes are different, the sealing is reliable, and the testing nipple can be left in the well to perform testing work, and the step 6) is executed;
6) The motor is powered, the motor rotates reversely, the transmission rod drives the pressure sensor and the central push rod to retract, and the motor stops rotating automatically when the transmission rod moves to the upper limit switch position; lifting the cable to lift the electric throwing pup joint to the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811512247.6A CN109356541B (en) | 2018-12-11 | 2018-12-11 | Electric throwing nipple and throwing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811512247.6A CN109356541B (en) | 2018-12-11 | 2018-12-11 | Electric throwing nipple and throwing method |
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| CN109356541A CN109356541A (en) | 2019-02-19 |
| CN109356541B true CN109356541B (en) | 2023-06-13 |
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| CN201811512247.6A Active CN109356541B (en) | 2018-12-11 | 2018-12-11 | Electric throwing nipple and throwing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111305826B (en) * | 2020-04-21 | 2020-12-08 | 哈尔滨艾拓普科技有限公司 | Electric control anchoring and setting type layered pressure measuring system for oil-water well and implementation method thereof |
| CN113294128A (en) * | 2021-06-23 | 2021-08-24 | 中国石油天然气股份有限公司长庆油田分公司第三采气厂 | Electric control throttle for gas well |
| CN113738295B (en) * | 2021-08-25 | 2022-05-17 | 武汉新烽光电股份有限公司 | Device for putting monitoring equipment in eccentric full-pipe and deep-pipe well |
| CN113863880B (en) * | 2021-10-13 | 2023-06-16 | 西南石油大学 | Repeated throwing device for underground instrument |
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| CN109356541A (en) | 2019-02-19 |
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