CN111997580B - Recoverable fish bone instrument of increasing yield - Google Patents
Recoverable fish bone instrument of increasing yield Download PDFInfo
- Publication number
- CN111997580B CN111997580B CN202011007203.5A CN202011007203A CN111997580B CN 111997580 B CN111997580 B CN 111997580B CN 202011007203 A CN202011007203 A CN 202011007203A CN 111997580 B CN111997580 B CN 111997580B
- Authority
- CN
- China
- Prior art keywords
- shell
- drill rod
- tool
- flexible drill
- cutter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000000988 bone and bone Anatomy 0.000 title description 4
- 241000251468 Actinopterygii Species 0.000 title description 3
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 29
- 230000000638 stimulation Effects 0.000 claims description 8
- 238000005553 drilling Methods 0.000 abstract description 23
- 239000012530 fluid Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
Abstract
The invention discloses a recyclable fishbone yield increasing tool, which comprises a shell, a first connector and a second connector which are arranged at two ends of the shell, a sealing and pressing cylinder arranged in the shell, a flexible drill rod and a power device, wherein the flexible drill rod is arranged at the two ends of the shell; the first joint and the second joint are in threaded connection with the shell through a conventional drill rod; the seal pressing cylinder is limited in the shell through a pin and is in clearance fit with the shell; one end of the flexible drill rod extends out of the shell and is provided with a drill bit, and the other end of the flexible drill rod is rotationally connected with the power device. The tool can replace two operation processes of perforation and fracturing operation in the well completion process; the whole operation program can be completed at one time, the operation can be completed only by the original drilling tool, other auxiliary equipment is not required to be added, the operation program is simple, the operation time is short, the operation signals are obvious, the pressure drop of the drilling fluid is used as the signal for completing the operation of the tool, and other equipment is not required to be added for monitoring; the tool is completely recyclable, and has great economic value and popularization value.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas drilling tools, in particular to a recyclable fishbone yield increasing tool.
Background
Fish bone stimulation techniques are commonly used as an emerging multi-branch drilling technique to replace both perforating and fracturing operations during the completion phase. Compared with perforation and fracturing operation, the recoverable fishbone stimulation tool disclosed by the invention can provide larger oil/gas production diameter, larger oil and gas flow area, and better and more purposefully improve the non-uniformity, natural fracture and high hole/high permeability characteristics of the oil reservoir. Meanwhile, the fracturing fluid adopted in the fracturing operation can cause pollution caused by leakage of the fracturing fluid into the underground water body, and the high risk exists in the perforation operation when the high explosive substances are used. At present, a large number of car groups and equipment are needed for matching and a large number of personnel are needed to participate in the operation in the fracturing operation, a large amount of cost is needed, and the fracturing operation cost of hundreds of thousands or even millions is very much higher than the total well construction cost.
The fish bone yield increasing technology adopts a pure mechanical design, and does not generate any pollution and explosion risks. In the existing multi-branch drilling tool use process, particularly after the multi-branch drilling tool is operated, the tool is usually left at the bottom of the well, the tool cannot be reused, the operation cost is increased, the well construction cost is increased, hidden danger is left for an oil/gas well, the inner diameter of an oil/gas production/gas pipe column is reduced due to the fact that the multi-branch drilling tool is left, the follow-up production operation and the use of production increasing measures are affected, the oil/gas production is further affected, and for a gas well, a drainage tool cannot be lowered into the bottom of the well, the gas well is flooded, and the gas well production and the gas well service life are affected.
Thus, the search for a recyclable stimulation tool is an important search for current multi-branch drilling technology.
Disclosure of Invention
The invention aims to provide a recyclable fishbone yield increasing tool, so as to solve the problems in the prior art, realize the completion of two operations of perforation and fracturing at one time, complete the operation without increasing the original drilling operators, and have simple tool operation; the drilling cost is reduced, and the well construction time is saved.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a recyclable fishbone yield increasing tool, which comprises a shell, a first connector and a second connector which are arranged at two ends of the shell, a sealing cylinder arranged in the shell, a flexible drill rod and a power device, wherein the flexible drill rod is arranged at the inner side of the shell; the first joint and the second joint are in threaded connection with the shell through a conventional drill rod; the seal pressing cylinder is limited in the shell through a pin and is in clearance fit with the shell; the flexible drill rod extends out of the end of the shell and is provided with a drill bit, and the other end of the flexible drill rod is rotationally connected with the power device.
Preferably, the shell is installed with seal a pressure section of thick bamboo through clearance fit, guarantees smooth and easy relative displacement, is equipped with the sealing washer between shell and the pressure section of thick bamboo simultaneously and guarantees the leakproofness of instrument, in order to avoid sealing a pressure section of thick bamboo too early gliding and then too early pressure release warning under the effect of drilling fluid simultaneously, through fixed shell of pin and the pressure section of thick bamboo of sealing, avoids sealing a pressure section of thick bamboo too early and the shell produces relative displacement.
Furthermore, the body is simple in structure due to the consideration of the practical use, the installation is easy, the main parts cannot be damaged in the use process, the parts can be repeatedly used, only part of the parts need to be replaced for repeated use, and the tool use cost is low. The length of the tool body is reasonably lower than that of the lengthened flexible drill rod, and the requirement on drilling equipment is low. The tool adopts a conventional part with higher strength, so that the tool has higher safety, effectiveness and service life.
The power device comprises a cutter, a power turntable, a transmission shaft, a power source and a centralizing block; the flexible drill rod is in transmission connection with the power turntable; the cutter corresponds to the flexible drill rod in position and is arranged close to the sealing and pressing cylinder; the cutter is in transmission connection with the power source through the transmission shaft; the power turntable is arranged between the cutter and the transmission shaft and is connected with the transmission shaft through a key;
the axis of the power source is coincident with the axis of the shell; the righting block is in clearance fit with the power source, and the righting block is also in interference with the inner wall of the shell.
The cutter and the transmission shaft are doubly fixed by adopting key connection and bolt connection; the transmission shaft is connected with the power source key.
Preferably, the shell and the sealing cylinder are sealed by a high-temperature rubber ring, so that the sealing cylinder is not influenced by underground pressure and temperature, and the application range is wide.
A sealing ring is also arranged between the sealing barrel and the shell; and the sealing ring is preferably a high-temperature-resistant rubber ring.
The cutter head of the cutter is of a tooth-shaped structure.
Preferably, the cutter head part adopts a tooth shape design, so that double functions of grinding and shearing on the flexible drill rod can be realized, the flexible drill rod can be sheared rapidly, the operation time is shortened, and the success rate of the operation is ensured.
The power source is an impeller.
Preferably, the power source is preferably an impeller because the impeller can generate a greater weight on bit than a turbine and a screw without the need for additional pressurization means.
The invention discloses the following technical effects: the invention can complete two operations of perforation and fracturing at one time, and simultaneously complete the operation without increasing the original drilling operators, the tool is simple to operate, the operation time is reduced, and the success rate of the operation is ensured;
therefore, the tool has great economic value and popularization value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention.
FIG. 2 is a schematic view of the serrated head structure of the cutter of the present invention;
the device comprises a first connector 1, a housing 2, a sealing and pressing cylinder 3, a pin 4, a flexible drill rod 5, a cutter 6, a power turntable 7, a transmission shaft 8, a power source 9, a centralizing block 10 and a second connector 11.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides a recyclable fishbone yield increasing tool, which comprises a shell 2, a first connector 1 and a second connector 11 which are arranged at two ends of the shell 2, a sealing cylinder 3 arranged in the shell 2, a flexible drill rod 5 and a power device, wherein the flexible drill rod is arranged on the inner side of the shell 2; the first joint 1 and the second joint 11 are in threaded connection with the shell 2 through a conventional drill rod; the seal pressing cylinder 3 is limited in the shell 2 through a pin 4 and is in clearance fit with the shell 2; one end of the flexible drill rod 5 extends out of the shell 2 and is provided with a drill bit, and the other end of the flexible drill rod is rotationally connected with the power device.
The power device comprises a cutter 6, a power turntable 7, a transmission shaft 8, a power source 9 and a centralizing block 10; the flexible drill rod 5 is in transmission connection with the power turntable 7; the cutter 6 corresponds to the flexible drill rod 5 in position and is arranged close to the sealing and pressing cylinder 3; the cutter 6 is in transmission connection with a power source 9 through a transmission shaft 8; the power turntable 7 is arranged between the cutter 6 and the transmission shaft 8 and is connected with the transmission shaft 8 in a key way;
the axial lead of the power source 9 is coincident with the axial lead of the shell 2; the righting block 10 is in clearance fit with the power source 9, and the righting block 10 is also in contact with the inner wall of the shell 2.
The cutter 6 and the transmission shaft 8 are doubly fixed by adopting key connection and bolt connection; the transmission shaft 8 is connected with the power source 9 in a key way.
A sealing ring is also arranged between the sealing cylinder 3 and the shell 2; and the sealing ring is preferably a high-temperature-resistant rubber ring.
The cutter head of the cutter 6 is of a tooth-shaped structure.
The power source 9 is preferably an impeller.
In one embodiment of the invention, the tool is designed with a drilling fluid flow channel, which can ensure that the drilling fluid reaches the bottom of the well smoothly without generating pressure drop which affects the weight on bit.
In another embodiment of the invention, the flexible drill rod 5 is a flexible drill rod with better elasticity and higher tensile and compression resistance characteristics; the power source 9 adopts an impeller.
In yet another embodiment of the present invention, as in FIG. 1, the mounting is in a left to right order; the first connector 1 and the shell 2 are connected with the shell 2 and the sealing cylinder 3 through conventional drill rod threads, so that the relative displacement effectiveness is ensured by adopting clearance fit, and meanwhile, the sealing ring is arranged to ensure the tightness of the tool; the pin 4 is used for fixing the shell 2 and the sealing cylinder 3, so that the shell 2 and the sealing cylinder 3 cannot relatively displace; the flexible drill rod 5 is connected with the power turntable 7, the power turntable 7 transmits the torque generated by the power assembly to the flexible drill rod 5, and the flexible drill rod 5 further transmits the torque to the drill bit for rock breaking and drilling;
the cutter 6 and the transmission shaft 8 are connected in a double mode through key connection and bolt connection, pressure and torque transmission are guaranteed, displacement is guaranteed not to occur relatively, the transmission shaft 8 and the power source 9 are connected in a key mode, the power source 9 can be guaranteed to generate effective torque transmission, the center shaft of the power source 9 and the righting block 10 are in clearance fit to guarantee smooth rotation of the center shaft, meanwhile the righting block 10 guarantees that the center of the power source 9 is centered, circumferential displacement is avoided, the effectiveness of the power source 9 is guaranteed, and the shell 2 and the second connector 11 are connected through flexible drill rod threads. The first joint 1, the outer shell 2 and the second joint 11 serve as housing support parts of the tool.
When the power source 9 is an impeller, the torque generated by the impact of drilling fluid under the well can meet the requirement of drilling operation, when the drilling operation is finished, the tool continues to move to the bottom of the well to cut off the flexible drill rod 5 under the action of force, after the cutter 6 cuts off the flexible drill rod 5, the tool continues to move to the bottom of the well under the action of the drilling fluid to act on the seal pressure cylinder 3, the seal pressure cylinder 3 transmits pressure and acts on the pin 4, after the cutter 6 cuts off the pin 4, the tool continues to move to the bottom of the well under the action of the drilling fluid, when the upper edge of the seal pressure cylinder 3 exceeds the remained through hole on the shell 2, the tool can generate a pressure channel which is controlled with the well in a surrounding mode, so that obvious pressure drop can be generated, and then the tool is informed to finish the ground operation as a signal, the ground operation lifts the tool off the bottom of the well, the next yield increasing operation is prepared after the part is overhauled. And when the next operation is performed, the next operation can be performed only by reinstalling parts such as the flexible drill rod, the drill bit and the like.
The invention can replace two operation processes of perforation and fracturing operation in the well completion process; the whole operation program can be completed at one time, the operation can be completed only by the original drilling tool, other auxiliary equipment is not required to be added, the operation program is simple, the operation time is short, the operation signals are obvious, the pressure drop of the drilling fluid is used as the signal for completing the operation of the tool, and other equipment is not required to be added for monitoring;
the tool is completely recyclable, and only an open hole wellbore is left after the operation is completed, so that the subsequent well completion operation, yield increasing measures and the application of other measures are not affected.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (5)
1. A recyclable fishbone stimulation tool, comprising: the flexible drill rod comprises a shell (2), a first connector (1) and a second connector (11) which are arranged at two ends of the shell (2), a sealing cylinder (3) which is arranged in the shell (2), a flexible drill rod (5) and a power device; the first joint (1) and the second joint (11) are in threaded connection with the shell (2); the sealing cylinder (3) is limited in the shell (2) through a fastener and is in clearance fit with the shell (2); the end, extending out of the shell (2), of the flexible drill rod (5) is provided with a drill bit, and the other end of the flexible drill rod is rotationally connected with the power device; the power device comprises a cutter (6), a power turntable (7), a transmission shaft (8), a power source (9) and a centralizing block (10); the flexible drill rod (5) is in transmission connection with the power turntable (7); the cutter (6) corresponds to the flexible drill rod (5) in position and is arranged close to the sealing and pressing cylinder (3); the cutter (6) is in transmission connection with the power source (9) through the transmission shaft (8); the power turntable (7) is arranged between the cutter (6) and the transmission shaft (8) and is connected with the transmission shaft (8) in a key way;
the axial lead of the power source (9) is coincident with the axial lead of the shell (2); one side of the centralizing block (10) is in clearance fit with the power source (9), and the other side of the centralizing block (10) is in contact with the inner wall of the shell (2); a sealing ring is further arranged between the sealing barrel (3) and the shell (2); the sealing ring is a high-temperature-resistant rubber ring; the cutter head of the cutter (6) is of a tooth-shaped structure.
2. The recyclable fishbone stimulation tool of claim 1, wherein: the cutter (6) and the transmission shaft (8) are doubly fixed by adopting key connection and bolt connection; the transmission shaft (8) is connected with the power source (9) in a key way.
3. The recyclable fishbone stimulation tool of claim 1, wherein: the power source (9) is an impeller.
4. The recyclable fishbone stimulation tool of claim 1, wherein: the fastener is a pin (4).
5. The recyclable fishbone stimulation tool of claim 1, wherein: the first connector (1) and the second connector (11) are in threaded connection with the shell (2) through a conventional drill rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011007203.5A CN111997580B (en) | 2020-09-23 | 2020-09-23 | Recoverable fish bone instrument of increasing yield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011007203.5A CN111997580B (en) | 2020-09-23 | 2020-09-23 | Recoverable fish bone instrument of increasing yield |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111997580A CN111997580A (en) | 2020-11-27 |
| CN111997580B true CN111997580B (en) | 2024-03-22 |
Family
ID=73474746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011007203.5A Active CN111997580B (en) | 2020-09-23 | 2020-09-23 | Recoverable fish bone instrument of increasing yield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111997580B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460506A (en) * | 2014-05-01 | 2017-02-22 | 哈利伯顿能源服务公司 | Interwell tomography methods and systems employing a casing segment with at least one transmission crossover arrangement |
| CN107461186A (en) * | 2016-06-02 | 2017-12-12 | 中国石油化工股份有限公司 | Multilateral Wells reservoir reconstruction device and remodeling method |
| CN110541673A (en) * | 2019-09-24 | 2019-12-06 | 重庆科技学院 | Releasable multi-branch fishbone drilling connecting tool |
| CN212249991U (en) * | 2020-09-23 | 2020-12-29 | 重庆科技学院 | Recoverable fishbone production increasing tool |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2760209Y (en) * | 2004-11-04 | 2006-02-22 | 杜炊 | Rotary table powered directional drilling tool |
| GB0910779D0 (en) * | 2009-06-23 | 2009-08-05 | Tunget Bruce A | Large volume low temperature well structure |
| DK177547B1 (en) * | 2011-03-04 | 2013-10-07 | Maersk Olie & Gas | Process and system for well and reservoir management in open-zone developments as well as process and system for production of crude oil |
| CA2891500A1 (en) * | 2012-11-15 | 2014-05-22 | Foro Energy, Inc. | High power laser hydraulic fructuring, stimulation, tools systems and methods |
| MY177192A (en) * | 2014-05-01 | 2020-09-09 | Halliburton Energy Services Inc | Casing segment having at least one transmission crossover arrangement |
| WO2016168957A1 (en) * | 2015-04-19 | 2016-10-27 | Prad Research And Development Limited | Automated trajectory and anti-collision for well planning |
| US11306570B2 (en) * | 2017-06-22 | 2022-04-19 | Conocophillips Company | Fishbones, electric heaters and proppant to produce oil |
-
2020
- 2020-09-23 CN CN202011007203.5A patent/CN111997580B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460506A (en) * | 2014-05-01 | 2017-02-22 | 哈利伯顿能源服务公司 | Interwell tomography methods and systems employing a casing segment with at least one transmission crossover arrangement |
| CN107461186A (en) * | 2016-06-02 | 2017-12-12 | 中国石油化工股份有限公司 | Multilateral Wells reservoir reconstruction device and remodeling method |
| CN110541673A (en) * | 2019-09-24 | 2019-12-06 | 重庆科技学院 | Releasable multi-branch fishbone drilling connecting tool |
| CN212249991U (en) * | 2020-09-23 | 2020-12-29 | 重庆科技学院 | Recoverable fishbone production increasing tool |
Non-Patent Citations (1)
| Title |
|---|
| 套管钻井可回收式钻具组合技术研究;宿振国;马清明;布玉环;;胜利油田职工大学学报;20070215(第S1期);全文 * |
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| CN111997580A (en) | 2020-11-27 |
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