CN109973078B - Auxiliary MWD high-efficiency well entering tool - Google Patents
Auxiliary MWD high-efficiency well entering tool Download PDFInfo
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- CN109973078B CN109973078B CN201910230586.3A CN201910230586A CN109973078B CN 109973078 B CN109973078 B CN 109973078B CN 201910230586 A CN201910230586 A CN 201910230586A CN 109973078 B CN109973078 B CN 109973078B
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- fluke
- spacing
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- 241000935974 Paralichthys dentatus Species 0.000 claims abstract description 57
- 230000007704 transition Effects 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 210000000078 claw Anatomy 0.000 claims 8
- 238000005553 drilling Methods 0.000 abstract description 30
- 238000010276 construction Methods 0.000 abstract description 13
- 238000005259 measurement Methods 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 2
- 241000242541 Trematoda Species 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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Classifications
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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
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
-
- 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
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a tool for assisting MWD (measurement while drilling) to enter a well efficiently, which is used in the fields of well drilling and well logging in the petroleum and gas industry. The problem that the seat key type MWD well entry efficiency is low can be effectively solved. The technical scheme is as follows: the anchor fluke supporter inserts the crossover sub inner chamber, anchor fluke supporter lower part is provided with a conical surface, be provided with the dovetail along the generating line direction on anchor fluke supporter lower part toper surface, be provided with one section screw thread in anchor fluke supporter bottom cylinder section, lock nut passes through threaded connection with anchor fluke supporter bottom, the crossover sub lower extreme is detained with spacing horse tooth and is connected through horse tooth, location anchor fluke bottom is provided with the dovetail, the location anchor fluke is installed in the dovetail on anchor fluke supporter lower part toper surface, spacing horse tooth connects upper portion and is provided with a circular inner chamber, spacing horse tooth connects upper portion and opens along the generating line direction has a counter sink, MWD connector is fixed through the snap ring between the spacing horse tooth connects. The invention greatly improves the logging efficiency of the MWD, saves the logging time of the MWD and saves the construction cost.
Description
Technical Field
The invention relates to an auxiliary MWD high-efficiency well entering tool used in the field of well drilling and well logging in the petroleum and gas industry.
Background
MWD (Measure While Drilling) means measurement While Drilling, and the MWD is mainly used for measuring well track parameters While Drilling in a construction well team, and comprises the following steps: the elevation angle, azimuth angle, toolface angle, and auxiliary parameters such as temperature. The anchor key type MWD can effectively utilize the anchor key to judge the direction of a tool face, identify a well inclination angle and an azimuth angle and guide directional drilling construction. When in drilling construction, the seat key type MWD needs to be placed in a drill rod, and a seat key joint is arranged at the bottom of an inner cavity of the drill rod and matched with the seat key joint; if the speed of going into when the drilling rod carries MWD and goes into the well after too fast, can lead to the drilling fluid in the well to surge upwards along the drilling rod inner chamber, the resistance of drilling fluid or buoyancy can make MWD come up along the drilling rod inner chamber this moment, and then causes MWD to break away from the seat key joint, makes the unable normal work of MWD. Currently, in order to prevent the above problems caused by too high drilling speed in a drilling rig, strict limitations are imposed on the MWD (measurement while drilling) running process, such as: (1) The operation is stable in the drilling process, and the violent braking and violent releasing are avoided, so that the instrument is prevented from being damaged; (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 single is controlled to be more than one minute. The series of operation limiting measures reduce the construction efficiency, greatly increase the MWD well-entering time and increase the construction cost. Meanwhile, because the price of the MWD is expensive, when a fault occurs in measurement while drilling construction, a construction well team can salvage the MWD to recover the loss even if the drilling tools such as a drill rod and the like cannot be salvaged out.
Based on the technical background, the invention particularly provides an auxiliary MWD high-efficiency well entering tool, which skillfully utilizes a special annular structure formed after butt joint of a drill rod male joint and a drill rod female joint, effectively improves the seat key type MWD well entering efficiency and reduces the operation cost.
Disclosure of Invention
The purpose of the invention is: in order to solve the problem that the MWD is disconnected due to the fact that the descending speed is too high during seat key type MWD rod-while-drilling well descending construction, well descending work is completed quickly and effectively, and the high-efficiency well descending tool for assisting the MWD is provided.
In order to achieve the purpose, the invention adopts the following technical scheme: an auxiliary MWD high-efficiency well entry tool comprises a fluke support body, a transition joint, a positioning fluke, a locking nut, a limiting jaw joint and a clamping ring. The method is characterized in that: the anchor fluke supporting body is inserted into the inner cavity of the transition joint, the cylindrical surface of the middle part of the anchor fluke supporting body is contacted with the cylindrical surface of the upper end of the inner cavity of the transition joint, a sealing device is arranged between the middle part of the anchor fluke supporting body and the upper end of the inner cavity of the transition joint, a conical joint is arranged at the top of the anchor fluke supporting body, a conical surface is arranged at the lower part of the anchor fluke supporting body, a dovetail groove is arranged on the conical surface of the lower part of the anchor fluke supporting body along the direction of a bus, a section of thread is arranged on the cylindrical section of the bottom of the anchor fluke supporting body, and a locking nut is connected with the bottom of the anchor fluke supporting body through the thread; female horse teeth are arranged at the lower part of the inner cavity of the transition joint, male horse teeth are arranged at the upper part of the outer circle of the limiting horse tooth joint, and the lower end of the transition joint is connected with the upper end of the limiting horse tooth joint through a horse tooth buckle; a window is arranged in the middle of the transition joint, a dovetail groove is arranged at the bottom of the positioning anchor fluke, and the positioning anchor fluke passes through the window in the middle of the transition joint and is installed in the dovetail groove on the conical surface at the lower part of the anchor fluke support body; spacing horse tooth connects upper portion to be provided with a circular inner chamber, and this inner chamber degree of depth is greater than the length of the public horse tooth in spacing horse tooth joint excircle upper portion, and spacing horse tooth connects upper portion to open along the generating line direction has a counter sink, and this counter sink link up along spacing horse tooth connects radial direction, and spacing horse tooth connects the lower part to be provided with an inner chamber, and this inner chamber is according to MWD connector top shape customization, and is fixed through the snap ring between MWD connector and the spacing horse tooth connect.
Three dovetail grooves are uniformly formed in the circumferential direction on the surface of an outer cone at the lower part of the fluke supporting body; three windows are uniformly arranged on the circumferential direction of the outer circle surface of the middle part of the transition joint, and the shape of each window is customized according to the shape of the positioning anchor fluke.
The beneficial effects of the invention are: the drill pipe seat key joint fixing device is simple and reliable in structure, limited annular space formed after butt joint of the drill pipe male and female joints is utilized, the axial reliable fixing of the MWD is realized, the problem that the key joint of the MWD and the drill pipe seat is disengaged from a key joint due to the fact that fluid in a well flows upwards or overflows in the well is effectively avoided, the well entering efficiency of the MWD is greatly improved, the time for entering the well of the MWD is saved, and the construction cost is saved; meanwhile, the invention can also carry out effective salvage, ensures the recycle of MWD and can help construction well team to recover loss.
Drawings
FIG. 1 is a schematic diagram of an auxiliary MWD high-efficiency tool of the present invention.
Fig. 2 is a view showing an operation state in which the present invention is installed at the male and female joints of the drill pipe.
Fig. 3 isbase:Sub>A sectional view of sectionbase:Sub>A-base:Sub>A in fig. 1.
Fig. 4 is a structural schematic diagram of a limiting jaw joint.
In the figure: the drilling tool comprises a 1-anchor fluke support body, a 2-transition joint, a 3-positioning anchor fluke, a 4-locking nut, a 5-limiting horse-tooth joint, a 5 a-male horse-tooth, a 6-snap ring, a 7-MWD connector, an 8-drill pipe male joint, a 9-drill pipe female joint and a 10-MWD.
Detailed Description
As shown in fig. 1, 3 and 4, the high-efficiency MWD-assisted well drilling tool comprises a fluke support body 1, a transition joint 2, a positioning fluke 3, a locking nut 4, a limiting jaw joint 5 and a clamping ring 6; the method is characterized in that: the anchor fluke supporting body 1 is inserted into an inner cavity of the transition joint 2, a cylindrical surface in the middle of the anchor fluke supporting body 1 is contacted with a cylindrical surface at the upper end of the inner cavity of the transition joint 2, a sealing device is arranged between the middle of the anchor fluke supporting body 1 and the upper end of the inner cavity of the transition joint 2, a conical joint is arranged at the top of the anchor fluke supporting body 1, a conical surface is arranged at the lower part of the anchor fluke supporting body 1, three dovetail grooves are uniformly distributed on the conical surface at the lower part of the anchor fluke supporting body 1 along the circumferential direction of a bus, a section of thread is arranged at a cylindrical section at the bottom of the anchor fluke supporting body 1, and a locking nut 4 is connected with the bottom of the anchor fluke supporting body 1 through the thread; the lower part of the inner cavity of the transition joint 2 is provided with female horse teeth, the upper part of the excircle of the limiting horse teeth joint 5 is provided with male horse teeth 5a, and the lower end of the transition joint 2 is connected with the upper end of the limiting horse teeth joint 5 through a horse teeth buckle; the middle part of the transition joint 2 is provided with three windows which are uniformly distributed along the circumferential direction of the outer circle surface of the middle part of the transition joint 2, the shape of each window is customized according to the appearance of the positioning fluke 3, a dovetail groove is arranged at the bottom of the positioning fluke 3, and the positioning fluke 3 penetrates through the window in the middle part of the transition joint 2 and is arranged in the dovetail groove on the conical surface of the lower part of the fluke support body 1; the upper portion of the limiting horse teeth joint 5 is provided with a circular inner cavity, the depth of the inner cavity is larger than the length of a male horse teeth 5a on the upper portion of an outer circle of the limiting horse teeth joint 5, the upper portion of the limiting horse teeth joint 5 is provided with a sunk groove along the direction of a bus, the sunk groove penetrates through the limiting horse teeth joint 5 in the radial direction, the lower portion of the limiting horse teeth joint 5 is provided with an inner cavity, the inner cavity is customized according to the shape of the top of an MWD connector 7, and the MWD connector 7 and the limiting horse teeth joint 5 are fixed through a clamping ring 6.
The components of the invention are machined and assembled as described above, as shown in figure 1, the lower end of the invention is connected to the MWD10 via the MWD coupling head 7, and the entire tool is then placed in the drill pipe, ensuring that the MWD10 bottom key assembly is correctly inserted into the seat key in the drill pipe, as shown in figure 2. At the moment, the three positioning anchor flukes 3 are expanded to the maximum state, namely the positioning anchor flukes 3 are positioned at the upper ends of dovetail grooves on the conical body at the lower part of the anchor fluke supporting body 1, and the positioning anchor flukes 3 are just positioned near the bottom of the conical thread of the drill rod female joint 9; in order to ensure that the positioning fluke 3 is located exactly near the bottom of the tapered thread of the drill pipe box 9 when the length of the drill pipe for placing the MWD10 is different (the length of the drill pipe provided by different drilling companies may be different), the axial positioning requirement can be met by adjusting the axial distance between the transition joint 2 and the limiting horse-teeth joint 5 of the present invention when the present invention is assembled; the specific operation is as follows: if the drill pipe is short, the axial position of the positioning fluke 3 after the MWD10 is matched with the seat key joint is higher than the bottom of the taper thread of the drill pipe female joint 9, the transition joint 2 can be pressed downwards forcibly, and the transition joint 2 descends along the limiting jaw joint 5 (the jaw buckle can only slide in one direction), so that the requirement of the invention on the position of the positioning fluke 3 is met. After the steps are completed, the drill pipe male joint 8 of another drill pipe is sleeved on the upper portion of the drill pipe coupling device and is screwed with the drill pipe female joint 9, after the connection of the drill pipes is completed, the positioning anchor fluke 3 is just positioned in a specific annular space formed after the drill pipe male joint 8 is in butt joint with the drill pipe female joint 9, and as the radial size of the annular space formed after the drill pipe male joint 8 is in butt joint with the drill pipe female joint 9 is larger than the inner diameter of a drill pipe body, the positioning anchor fluke 3 can be clamped in the annular space, so that the MWD10 is limited to move axially along the inner cavity of the drill pipe at a large distance. At the moment, a constructor can put a drill rod provided with the drilling head and the MWD10 into a wellhead, quickly carry out follow-up single joint connection and drilling operation and send the MWD10 to a preset working position; in the process of connecting a single, the driller does not need to strictly control the drilling speed any more, and the problem of bond disconnection between the MWD10 and the drill rod due to the situations of drilling fluid upwelling in a well or well overflowing in the well and the like can be avoided even if the drilling speed is too high, so that the well entering efficiency of the MWD10 is improved, the well entering time is saved, and the construction cost is saved.
When accidents such as drilling tool jamming occur in the construction process, the MWD10 is expensive, if the drill rod with the MWD10 cannot be completely lifted out of a well mouth in the field by processing methods such as jam release and the like, a professional fishing tool can be lowered into the drill rod at the moment, the top of the fluke support body 1 is grabbed, the fishing tool is lifted, the fluke support body 1 moves upwards, the positioning flukes 3 in the dovetail grooves are dragged to be radially recovered until the extending lengths of the three positioning flukes 3 are smaller than the inner diameter of the drill rod, and the three positioning flukes are radially and continuously recovered to the lower end of the dovetail groove on the conical body at the lower part of the fluke support body 1; and the wellhead continues to lift up, the fluke support body 1 pulls the lower tool to integrally move upwards through the positioning fluke 3, and finally the invention and the MWD10 can be completely lifted out of the wellhead, so that loss is recovered.
Claims (2)
1. An auxiliary MWD high-efficiency well entry tool is composed of a fluke support body (1), a transition joint (2), a positioning fluke (3), a locking nut (4), a limiting jaw joint (5) and a clamping ring (6); the method is characterized in that: the anchor claw supporting body (1) is inserted into the inner cavity of the transition joint (2), the middle cylindrical surface of the anchor claw supporting body (1) is contacted with the cylindrical surface at the upper end of the inner cavity of the transition joint (2), a sealing device is arranged between the middle of the anchor claw supporting body (1) and the upper end of the inner cavity of the transition joint (2), the top of the anchor claw supporting body (1) is provided with a conical joint, the lower part of the anchor claw supporting body (1) is provided with a conical surface, the conical surface at the lower part of the anchor claw supporting body (1) is provided with a dovetail groove along the bus direction, a section of thread is arranged at the cylindrical section at the bottom of the anchor claw supporting body (1), and a locking nut (4) is connected with the bottom of the anchor claw supporting body (1) through the thread; female horse teeth are arranged on the lower portion of an inner cavity of the transition joint (2), male horse teeth (5 a) are arranged on the upper portion of the outer circle of the limiting horse tooth joint (5), and the lower end of the transition joint (2) is connected with the upper end of the limiting horse tooth joint (5) through a horse tooth buckle; a window is arranged in the middle of the transition joint (2), a dovetail groove is arranged at the bottom of the positioning anchor fluke (3), and the positioning anchor fluke (3) penetrates through the window in the middle of the transition joint (2) and is installed in the dovetail groove on the conical surface at the lower part of the anchor fluke support body (1); spacing horse tooth connects (5) upper portion and is provided with a circular inner chamber, this inner chamber degree of depth is greater than the length of spacing horse tooth joint (5) excircle upper portion public horse tooth (5 a), spacing horse tooth connects (5) upper portion and opens along the generating line direction has a heavy groove, this heavy groove is link up along spacing horse tooth joint (5) radial direction, spacing horse tooth connects (5) lower part and is provided with an inner chamber, this inner chamber is according to MWD connector (7) top shape customization, it is fixed through snap ring (6) between MWD connector (7) and spacing horse tooth joint (5).
2. An auxiliary MWD high efficiency well entry tool according to claim 1, wherein: three dovetail grooves are uniformly formed in the circumferential direction of the outer conical surface of the lower portion of the fluke supporting body (1); three windows are uniformly arranged on the circumferential direction of the outer circle surface of the middle part of the transition joint (2), and the shape of each window is customized according to the shape of the positioning anchor fluke (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910230586.3A CN109973078B (en) | 2019-03-26 | 2019-03-26 | Auxiliary MWD high-efficiency well entering tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910230586.3A CN109973078B (en) | 2019-03-26 | 2019-03-26 | Auxiliary MWD high-efficiency well entering tool |
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| CN109973078A CN109973078A (en) | 2019-07-05 |
| CN109973078B true CN109973078B (en) | 2022-11-01 |
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