CN109882106B - Efficient well entry-fishing tool for measurement while drilling - Google Patents
Efficient well entry-fishing tool for measurement while drilling Download PDFInfo
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- CN109882106B CN109882106B CN201910230631.5A CN201910230631A CN109882106B CN 109882106 B CN109882106 B CN 109882106B CN 201910230631 A CN201910230631 A CN 201910230631A CN 109882106 B CN109882106 B CN 109882106B
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Abstract
The invention relates to a measurement-while-drilling efficient well entering-fishing tool used in the field of well drilling and well logging in the petroleum and gas industry. The problem that the well entry efficiency of the seat key type measurement while drilling instrument is low can be effectively solved. The technical scheme is as follows: the lower part of the fishing head is arranged in the upper joint, the top of the fishing head is provided with a conical mushroom cap, the middle part of the fishing head is in clearance fit with the upper part of the inner cavity of the upper joint, the upper end of the connecting rod is connected with a boss at the lower part of the fishing head through a connecting pin, the lower end of the connecting rod is connected with the support wing through a shear pin, and the support wing is connected with a semicircular boss at the middle part of the upper joint through a positioning pin; a section of the serrated fastener is arranged on the lower part of the excircle of the upper joint, the serrated fastener is arranged on the upper part of the inner cavity of the lower joint, and the lower end of the upper joint is connected with the upper end of the lower joint through the serrated fastener; an annular clamping groove is arranged near the end surface of the inner cavity at the bottom of the lower joint. The invention greatly improves the well-entering efficiency of the measurement while drilling instrument, saves the well-entering time of the tool and saves the construction cost.
Description
Technical Field
The invention relates to a measurement-while-drilling efficient well entering-fishing tool used in the field of well drilling and well logging in the petroleum and gas industry.
Background
The measurement while drilling instrument is mainly used for measuring borehole trajectory parameters while drilling in a construction team, and comprises: the angle of the well, the azimuth, the tool face angle, and auxiliary parameters such as temperature. The seat key type measurement-while-drilling instrument can effectively utilize the seat key to judge the direction of the tool face, identify the inclination angle and the azimuth angle and is beneficial to directional construction. When the seat key type measurement while drilling instrument is in a well, the measurement while drilling instrument needs to be placed in a drill string, and a seat key joint is arranged at the bottom of an inner cavity of the drill string and matched with the seat key joint; if the drilling string with the seat key type measurement while drilling instrument enters the well, the drilling fluid can be caused to flow upwards along the inner cavity of the drilling string if the downward entering speed is too high, the resistance or buoyancy of the drilling fluid causes the measurement while drilling instrument to float upwards along the inner cavity of the drilling string, and then the measurement while drilling instrument is separated from the seat key joint, so that the measurement while drilling instrument cannot work normally. At present, in order to prevent the problem caused by the fact that the drilling tool is too fast in the measurement while drilling machine, the construction crew strictly controls the running-in process of the measurement while drilling machine, for example: (1) the operation is stable in the drilling process, the violent braking and violent releasing are avoided, and the falling objects in the drill rod are strictly forbidden in the wellhead operation so as to avoid damaging instruments; (2) the pump starting operation needs to be stable, and the discharge capacity and the pump pressure are kept to rise uniformly; (3) the drilling speed is strictly controlled, and the lowering time of each upright post is controlled to be more than 1 minute. The series of operation limiting measures reduce the construction efficiency, greatly increase the time for the tool to enter the well and increase the construction cost. Meanwhile, the measurement while drilling instrument is expensive, so when an accident occurs in measurement while drilling construction, a well team needs to salvage the measurement while drilling instrument out as much as possible even if other drilling tools in the well are abandoned.
Based on the technical background, the invention particularly provides an efficient entry-fishing tool for measurement while drilling, which effectively improves the entry efficiency of a seat key type measurement while drilling instrument and reduces the operation cost.
Disclosure of Invention
The purpose of the invention is: in order to solve the problem that the key is frequently disengaged due to the fact that the descending speed is too high when the seat key type measurement-while-drilling instrument descends into the well along with a drill column for construction, the well entering work is completed quickly and effectively, and the efficient entering-fishing tool for measurement-while-drilling is provided.
In order to achieve the purpose, the invention adopts the following technical scheme: an efficient tool for drilling and fishing comprises a fishing head, an O-shaped sealing ring, an upper joint, a connecting pin, a connecting rod, a positioning pin, a shear pin, a support wing, a lower joint and a locking snap ring. The method is characterized in that: the lower part of the fishing head is arranged in the upper joint, the top of the fishing head is provided with a conical mushroom cap, the middle part of the fishing head is in clearance fit with the upper part of an inner cavity of the upper joint, an O-shaped sealing ring is arranged between the outer cylindrical surface of the middle part of the fishing head and the upper part of the inner cavity of the upper joint, three rectangular bosses are uniformly arranged on the circumference of the lower part of the fishing head, pin holes are arranged on the rectangular bosses, the upper end of a connecting rod is connected with the bosses at the lower part of the fishing head through a connecting pin, the lower end of the connecting rod is connected with the supporting wings; a circular step surface is arranged at the upper part of an inner cavity of the upper joint, three rectangular through grooves are uniformly arranged in the circumferential direction of the middle part of the upper joint, a semicircular boss is arranged under each rectangular through groove in the middle part of the upper joint, a pin hole is formed in each semicircular boss, and the support wings are connected with the semicircular bosses in the middle part of the upper joint through positioning pins; a section of the serrated fastener is arranged on the lower part of the excircle of the upper joint, the serrated fastener is arranged on the upper part of the inner cavity of the lower joint, and the lower end of the upper joint is connected with the upper end of the lower joint through the serrated fastener; the lower part of the upper joint is provided with a through sunk groove along the bus direction, the depth of the sunk groove is greater than the length of the stud buckle at the lower part of the excircle of the upper joint, the bottom of the lower joint is provided with an inner cavity, the top of the inner cavity is conical, an annular clamping groove is arranged near the end surface of the inner cavity at the bottom of the lower joint, and the inner cavity at the bottom of the lower joint and the mushroom head are fixed by a locking clamping ring.
The invention has the beneficial effects that: the device has a simple and reliable structure, realizes the axial reliable fixation of the measurement-while-drilling instrument by utilizing the special annular space formed after the butt joint of the male and female joints of the drill string, effectively avoids the problem that the measurement-while-drilling instrument is off-keyed from the drill string due to the conditions of fluid upwelling in a well or well overflow in the well and the like, further greatly improves the well entry efficiency of the measurement-while-drilling instrument, saves the well entry time of tools and saves the construction cost; meanwhile, the invention can also carry out effective salvage, ensures the recycle of the measurement instrument while drilling and can help the construction well team to recover the loss.
Drawings
FIG. 1 is a schematic structural diagram of an efficient tool for measuring while drilling and salvaging while drilling of the present invention.
Fig. 2 is a sectional view of section a-a in fig. 1.
Fig. 3 is a view showing a structure of a horse teeth feature of the lower joint of the present invention.
Fig. 4 is a schematic structural view of the present invention in fishing operation.
Fig. 5 is an operational view of the present invention installed at the male and female joints of a drill string.
FIG. 6 is a view of the connection of the drill string male and female connectors.
In the figure: 1-fishing head, 2-O-shaped sealing ring, 3-upper joint, 4-connecting pin, 5-connecting rod, 6-positioning pin, 7-shear pin, 8-supporting wing, 9-lower joint, 10-locking snap ring, 11-mushroom head, 12-drill string female joint, 13-drill string male joint and 14-measurement while drilling instrument.
Detailed Description
As shown in fig. 1 to 3, the efficient tool for entering a well and fishing while drilling measurement of the invention is composed of a fishing head 1, an O-shaped sealing ring 2, an upper joint 3, a connecting pin 4, a connecting rod 5, a positioning pin 6, a shear pin 7, a support wing 8, a lower joint 9 and a locking snap ring 10. The fishing device comprises a fishing head 1, a fishing rod, a connecting rod 5, supporting wings 8, a connecting rod 5, a connecting rod, a supporting wing 7 and a shear pin, wherein the lower part of the fishing head 1 is arranged in an upper joint 3, the top of the fishing head 1 is provided with a conical mushroom cap, the middle part of the fishing head 1 is in clearance fit with the upper part of an inner cavity of the upper joint 3, an O-shaped sealing ring 2 is arranged between the outer cylindrical surface of the middle part of the fishing head 1 and the upper part of the inner cavity of the upper joint 3, three rectangular bosses are uniformly arranged on the circumference of the lower part of the fishing head 1, pin holes are formed in the rectangular bosses, the upper end of the connecting; a circular step surface is arranged at the upper part of an inner cavity of the upper joint 3, three rectangular through grooves are uniformly arranged in the middle of the upper joint 3 in the circumferential direction, a semicircular boss is arranged under each rectangular through groove in the middle of the upper joint 3, a pin hole is formed in each semicircular boss, and the support wing 8 is connected with the semicircular boss in the middle of the upper joint 3 through a positioning pin 6; a section of a serrated fastener is arranged at the lower part of the excircle of the upper joint 3, a serrated fastener is arranged at the upper part of the inner cavity of the lower joint 9, and the lower end of the upper joint 3 is connected with the upper end of the lower joint 9 through the serrated fastener; the lower part of the upper joint 3 is provided with a through sunk groove along the bus direction, the depth of the sunk groove is greater than the length of the stud buckle at the lower part of the excircle of the upper joint 3, the bottom of the lower joint 9 is provided with an inner cavity, the top of the inner cavity is conical, an annular clamping groove is arranged near the end surface of the inner cavity at the bottom of the lower joint 9, and the inner cavity at the bottom of the lower joint 9 and the mushroom head 11 are fixed by a locking clamping ring 10.
After the tool is assembled according to the above description, the lower end of the tool is butted with a measurement while drilling instrument 14 through a mushroom head 11, then the whole tool is placed in a prepared drill string, and a seat key device at the bottom of the measurement while drilling instrument 14 is ensured to be correctly inserted into a key groove prefabricated in the drill string, as shown in fig. 5 and 6, at the moment, three support wings 8 of the tool are in a horizontally extended state, and the support wings 8 are just positioned on the upper end surface of a male joint 13 of the drill string and can be slightly adjusted in the axial direction of the drill string; in case of different lengths of drill strings for placing the measurement while drilling instrument 14 (the lengths of the drill strings provided by different drilling tool companies may be different), in order to ensure that the support wings 8 are exactly positioned at the upper end surface of the male joint 13 of the drill string, the axial geometric positioning requirement can be met by adjusting the axial distance between the upper joint 3 and the lower joint 9 of the invention during tool assembly; the specific operation is as follows: if the drill string is short, the upper connector 3 can be pressed down, and the upper connector 3 is connected with the lower connector 9 through the jaw fastener, so that the upper connector 3 can move downwards along the inner cavity of the lower connector 9 (the jaw fastener can only slide in one direction), and the positioning requirement of the drill string on the support wing 8 is met. After the steps are completed, the drill string female joint 12 is sleeved on the upper portion of the drill string female joint and is in threaded connection with the drill string male joint 13, after the drill string is connected, the support wings 8 are just positioned in an annular space formed after the drill string female joint 12 is in butt joint with the drill string male joint 13, due to the special design structure of the drill string male joint, the radial size of the annular space formed after the drill string female joint 12 is in butt joint with the drill string male joint 13 is larger than the inner diameter of a drill string body, and therefore the drill string female joint cannot move axially along the inner cavity of the drill string at a large distance by means of the support wings 8 being clamped in the annular space. At the moment, a drilling crew can put the drill string provided with the drilling tool 14 into a wellhead, and quickly perform subsequent joint connecting operation to convey the drilling tool 14 to a specified working position; in the process of connecting a single, the driller does not need to strictly control the drilling speed any more, and even if the drilling speed is too high, the problem of bond disconnection between the measurement while drilling instrument 14 and the drill string caused by the conditions of fluid upwelling in a well or well overflowing in the well and the like can be avoided, and the reason is as follows: if the fluid in the well upwells to drive the measurement-while-drilling tool 14 to float upwards, but the lower end of the measurement-while-drilling tool is connected with the upper end of the measurement-while-drilling tool 14, the middle part of the measurement-while-drilling tool is clamped in the annular space of a drill string connector by the support wings 8, and meanwhile, the upfloating force on the measurement-while-drilling tool 14 caused by the upwelling of the drilling fluid is not enough to push the lower connector 9 and the upper connector 3 to slide axially, so that the measurement-while-drilling tool 14 can be reliably located in a key groove in the drill string and cannot be displaced axially, the well entry efficiency of the measurement-while-.
When faults such as drilling tool jamming occur in the construction process, due to the fact that the price of the measurement while drilling instrument 14 is expensive, if the drill string provided with the measurement while drilling instrument 14 cannot be completely lifted out of a well head through processing methods such as jam release and the like on site, a professional fishing tool can be lowered into the drill string at the moment, the top of the fishing head 1 is grabbed, the fishing drilling tool is lifted upwards, the shear pin 7 between the connecting rod 5 and the supporting wing 8 is further sheared, the connecting rod 5 is separated from the supporting wing 8, the supporting wing 8 can droop around the positioning pin 6, as shown in the figure 4, the well head is continuously lifted upwards, and finally the measurement while drilling instrument 14 and the invention can be completely lifted out of the well head, so that losses are recovered.
Claims (1)
1. A high-efficiency well entry-fishing tool for measurement while drilling comprises a fishing head (1), an O-shaped sealing ring (2), an upper joint (3), a connecting pin (4), a connecting rod (5), a positioning pin (6), a shear pin (7), a support wing (8), a lower joint (9) and a locking snap ring (10); the method is characterized in that: the lower part of the fishing head (1) is arranged in the upper joint (3), the top of the fishing head (1) is provided with a conical mushroom cap, the middle part of the fishing head (1) is in clearance fit with the upper part of an inner cavity of the upper joint (3), an O-shaped sealing ring (2) is arranged between the outer cylindrical surface of the middle part of the fishing head (1) and the upper part of the inner cavity of the upper joint (3), three rectangular bosses are uniformly arranged on the circumference of the lower part of the fishing head (1), pin holes are formed in the rectangular bosses, the upper end of the connecting rod (5) is connected with the boss of the lower part of the fishing head (1) through a connecting pin (4), the lower end of the connecting rod (5) is connected with the support wing (8) through a shear pin (7), and the shear; a circular step surface is arranged at the upper part of the inner cavity of the upper joint (3), three rectangular through grooves are uniformly arranged in the middle of the upper joint (3) in the circumferential direction, a semicircular boss is arranged right below each rectangular through groove in the middle of the upper joint (3), a pin hole is formed in each semicircular boss, and the support wing (8) is connected with the semicircular boss in the middle of the upper joint (3) through a positioning pin (6); a section of horse-tooth buckle is arranged at the lower part of the excircle of the upper joint (3), a horse-tooth buckle is arranged at the upper part of the inner cavity of the lower joint (9), and the lower end of the upper joint (3) is connected with the upper end of the lower joint (9) through the horse-tooth buckle; the lower portion of the upper joint (3) is provided with a through sinking groove along the bus direction, the depth of the sinking groove is larger than the length of a stud buckle at the lower portion of the excircle of the upper joint (3), the bottom of the lower joint (9) is provided with an inner cavity, the top of the inner cavity is conical, an annular clamping groove is arranged near the end face of the inner cavity at the bottom of the lower joint (9), the inner cavity at the bottom of the lower joint (9) is fixed with a mushroom head (11) through a locking clamping ring (10), and the lower end of the tool is butted with a measurement while drilling instrument (14) through the mushroom head (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910230631.5A CN109882106B (en) | 2019-03-26 | 2019-03-26 | Efficient well entry-fishing tool for measurement while drilling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910230631.5A CN109882106B (en) | 2019-03-26 | 2019-03-26 | Efficient well entry-fishing tool for measurement while drilling |
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| CN109882106A CN109882106A (en) | 2019-06-14 |
| CN109882106B true CN109882106B (en) | 2021-04-30 |
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| CN201910230631.5A Active CN109882106B (en) | 2019-03-26 | 2019-03-26 | Efficient well entry-fishing tool for measurement while drilling |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2289673C2 (en) * | 2004-08-31 | 2006-12-20 | Олег Борисович Андрианов | Method for mounting and fastening objects inside wells and device for fastening and mounting objects in wells (variants) |
| CN203742505U (en) * | 2014-02-13 | 2014-07-30 | 中国石油集团西部钻探工程有限公司 | Floating ball and float collar type prestress well cementation ground anchor assembly |
| CN104675383B (en) * | 2015-02-15 | 2017-08-22 | 中国石油集团西部钻探工程有限公司 | Downhole electronic pressure bomb hanger |
| CN205477470U (en) * | 2016-03-14 | 2016-08-17 | 中国石油集团西部钻探工程有限公司 | Double four paws prestressing force well cementation earth anchor |
| RU2639335C1 (en) * | 2016-09-06 | 2017-12-21 | Общество с ограниченной ответственностью Научно-производственная фирма "ВНИИГИС - Забойные телеметрические комплексы" (ООО НПФ "ВНИИГИС" - ЗТК") | Device to secure casings of downhole instrumentation of bottomhole telemetric system inside drilling string insert |
| CN108150153B (en) * | 2016-12-02 | 2021-08-03 | 中国石油天然气股份有限公司 | Instrument device that drops is prevented in cable test in oil gas well |
| CN206397491U (en) * | 2016-12-26 | 2017-08-11 | 克拉玛依新科澳石油天然气技术股份有限公司 | The anti-top falling-proof apparatus of tester |
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Effective date of registration: 20221020 Address after: 163000 room 503, No.2 Kaiyuan street, Daqing economic and Technological Development Zone, Ranghulu District, Daqing City, Heilongjiang Province Patentee after: Daqing Naigu Petroleum Machinery Equipment Manufacturing Co.,Ltd. Address before: No.9999 Hongguang Avenue, Hongguang Town, Pidu District, Chengdu City, Sichuan Province Patentee before: XIHUA University |
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