CN108979625B - Radial well track measuring device and system - Google Patents
Radial well track measuring device and system Download PDFInfo
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- CN108979625B CN108979625B CN201810816661.XA CN201810816661A CN108979625B CN 108979625 B CN108979625 B CN 108979625B CN 201810816661 A CN201810816661 A CN 201810816661A CN 108979625 B CN108979625 B CN 108979625B
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- 238000004891 communication Methods 0.000 claims abstract description 86
- 238000005259 measurement Methods 0.000 claims abstract description 59
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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
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
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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
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
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Abstract
The invention provides a radial well trajectory measuring device and a system, wherein the device comprises: the operation module and the energy communication module; the operation module is arranged at the most downstream of the operation tubular column and can be used for measuring and drilling a radial well track; and the energy communication module is arranged at the tail end of the coiled tubing and used for providing electric power for the operation module and realizing data interaction between the operation module and ground equipment. According to the invention, the energy communication module can control the sensor behavior, adjust the sensor parameters and perform track measurement operation control according to the operation condition and the requirements of ground engineers in the operation process of any radial well, thereby increasing the operation flexibility, reducing the tripping times and saving the operation period and cost.
Description
Technical Field
The invention relates to an oil gas development logging technology, in particular to a radial well trajectory measuring device and a system.
Background
With the development of international oil and gas resource exploration, the characteristics of increasingly failing conventional oil and gas reservoirs, low pressure, low permeability, low output, broken blocks, marginal areas, thin reservoirs and the like become the normal state of common oil and gas development. In the process of oil and gas development, the track of the drilled oil and gas well is an important basis for the design of the final well completion and the oil and gas production mode of the oil and gas well. Therefore, accurate mapping of the hydrocarbon well trajectory is critical for hydrocarbon production.
In the prior art, due to the limitation of diameter and length, the conventional measuring tool cannot realize ultrashort radius steering in an oil pipe, so that a small-size measuring device based on a micro-electro-mechanical system (MEMS) sensor is often used for measuring the track of a radial horizontal well, and the track is measured in a re-entry mode after drilling. However, the radial horizontal well drilling mostly adopts a scheme design of multiple layers and multiple directions of the same well barrel, so that the construction operations of adjusting the direction and the well depth, windowing a casing and jetting drilling are required to be carried out on the steering gear in a reciprocating manner in the operation. Because the radial branch well hole has smaller size, the re-entry after drilling of the branch well hole can not be carried out after the parameter adjustment of the steering device, the current re-entry and track measurement operation of the branch well hole can be carried out by taking off the tool for the second time after the jet drilling is finished and before the parameter adjustment of the steering device, and the operation period and the construction cost of the radial horizontal well can be increased by times.
In addition, among the prior art, this type of measuring device all adopts high temperature resistant button cell power supply, and memory chip off-line storage surveys, the electricity integration in the design of integral type's measurement nipple joint. However, because the operating temperature of the current small-size high-temperature-resistant battery and the micro-electromechanical sensor element generally does not exceed 85 ℃, strictly speaking, the radial well trajectory measuring device and the design idea in the prior art can only be applied to the operation of shallow low-temperature oil and gas wells (the operating conditions of the low-temperature oil and gas wells are that the well depth is 3000-4000m, and the bottom temperature is less than or equal to 85 ℃), and are not applied to the conventional or even deep radial well operation of high-temperature oil and gas wells.
In addition, the radial well trajectory measurement in the prior art adopts a method of ultra-fast tripping and effective tool operation interval setting to reduce the consumption of electric energy and storage space of a measurement device, so that the effective operation time is prolonged in a phase-changing manner, however, due to the fact that the tripping speed is too fast, underground complexity is easily caused, and operation success or failure and construction safety are affected; in addition, the setting of the previous interval is more rigid, common problems such as inaccurate estimation of the operation time, increase of operation batches and the like cannot be effectively solved, downhole complexity cannot be timely solved, operation failure is finally caused, the tripping time is wasted, and the operation cost is increased.
In addition, the existing radial well trajectory measurement technology mostly uses an integrated attitude sensor for measurement, but in actual use, the equipment running state and the motion trajectory are calculated by using accelerometer data of the attitude sensor through a time quadratic integration method, so that a large accumulated error is caused; the measuring tool is composed of a shell and a connector, the shell is connected with the connector through threads, a measuring element and a battery are placed inside the shell, a fluid channel does not exist in the tool, and the measuring can be carried out only in a mode of re-entering after drilling.
Disclosure of Invention
In order to increase the flexibility of the radial trajectory measurement operation, reduce the drilling times and save the operation period and the cost, the embodiment of the invention provides a radial well trajectory measurement device, which comprises: the operation module and the energy communication module; the operation module is connected with the energy communication module through a high-pressure hose;
the operation module is arranged at the most downstream of the operation tubular column and is used for measuring the radial well track and drilling;
the energy communication module is arranged at the tail end of the coiled tubing in the operation tubular column and used for providing electric power for the operation module and realizing data interaction between the operation module and ground equipment.
In an embodiment of the present application, the job module includes: bottom drilling tool, measuring nipple; and the bottom drilling tool is in threaded connection with the measuring nipple.
In the embodiment of the application, the bottom hole assembly is as follows: a rotary jet drill bit or a multi-hole jet drill bit or an end cap.
In the embodiment of this application, measurement nipple joint in be provided with:
the gyroscope is used for acquiring angular acceleration data;
a magnetometer for acquiring real-time magnetic field components;
an accelerometer to acquire acceleration data.
Meanwhile, the invention also provides a radial well trajectory measuring system, which comprises: a radial well trajectory measurement device and surface equipment; wherein the content of the first and second substances,
the radial well trajectory measuring device comprises: the operation module and the energy communication module; the operation module is connected with the energy communication module through a high-pressure hose;
the operation module is arranged at the most downstream of the operation tubular column and is used for measuring the radial well track and drilling;
the energy communication module is arranged at the tail end of the coiled tubing and used for providing electric power for the operation module and realizing data interaction between the bottom operation module and ground equipment.
In an embodiment of the present application, the job module includes: drilling tool assembly and measuring short section; and the bottom drilling tool is in threaded connection with the measuring nipple.
In the embodiment of the application, the bottom hole assembly is as follows: a rotary jet drill bit or a multi-hole jet drill bit or an end cap.
In the embodiment of this application, measurement nipple joint in be provided with: gyroscopes, magnetometers, and accelerometers.
According to the invention, the micro-electromechanical sensor is adopted for data acquisition and storage, and the energy communication module can adjust the sensor parameters and carry out track measurement operation according to the operation condition and the requirements of ground engineers in the operation process of any radial well, so that the operation flexibility is increased, the tripping times are reduced, and the operation period and the cost are saved. A fluid channel is reserved in a mode of separating the annular circuit board from electricity measurement, so that measurement while drilling of a radial well track is realized; meanwhile, the surface area of the circuit board can be increased by the annular circuit board, so that the measurement error is effectively reduced by the form of arranging the redundant sensors and the sensor array.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a radial trajectory measuring device disclosed in the present invention;
FIG. 2 is a schematic view of an operation module of a rotary jet drill bit and measuring nipple combined structure disclosed in the embodiment of the invention;
FIG. 3 is a front view of a measuring nipple in the embodiment of the present invention;
FIG. 4 is an assembly drawing of a measuring nipple in the embodiment of the invention;
FIG. 5 is a schematic view of an operation module of a combination structure of a porous jet drill and a measuring nipple disclosed in the embodiment of the invention;
fig. 6 is a schematic diagram of an operation module of a combined structure of an end cover and a measuring nipple disclosed in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention provides a radial well trajectory measuring device, as shown in fig. 1, comprising: the operation module and the energy communication module; the operation module is connected with the energy communication module 3 through a high-pressure hose 17. Wherein, the operation module includes: a bottom hole assembly 1 and a gauging sub 2.
In this embodiment, the energy communication module 3 is connected to the ground device 23 through the ground equipment 24, wherein the ground device 23 may be a combination of ground devices such as a computer, a signal generator, a receiver, and a ground power supply device equipped with a matching trajectory calculation software, and the ground equipment 24 may be a free combination of a manifold and a cable or a wireless communication device according to the signal generation, the type of the receiving device, and whether the ground power supply is performed. In the embodiment of the present invention, the ground equipment 23 and the ground device 24 are optional modules, and are only selected when the real-time communication or ground power supply is selected for the measurement operation.
In the embodiment, the operation module is positioned at the most downstream of the operation pipe string, the core component of the operation module is a track measuring short section, the track measuring short section and the jet nozzle can form the track measuring short section and carry out measurement while drilling, or the track measuring short section and the end cover can form the reentry type track measurement for carrying out the reentry type measurement of the radial well track or the measurement while drilling and the jet drilling; the high-pressure hose 17 is connected with the operation module in a buckling and pressing mode, the connection between the energy communication module 3 and the measuring nipple 2 of the operation module is structurally realized, a fluid circulation channel is provided, a transmission cable 11 is pre-buried in the high-pressure hose 17 (or can be pressed during actual use), and the electric power and data transmission between the measuring nipple 2 and the energy communication module 3 is realized; the energy communication module 3 is used for providing power supply and data storage services for the measuring short section in the operation module, receiving ground signals to conduct behavior control on the measuring short section in the operation module, the energy communication module 3 is connected with the high-pressure hose 17 and the continuous oil pipe 26 through threads, and the transmission cable 11 is connected with a circuit in the energy communication module 3; the ground equipment 23 is used for providing services such as electric power, data, operation and the like for the energy communication pup joint 3.
In this embodiment, the energy communication module 3 is located between the high-pressure hose 17 and the coiled tubing 26, and is structurally connected through threads, a high-temperature-resistant battery, a memory and a communicator are arranged inside, and connection of internal devices and interaction of data and power are realized through wires; the high-temperature-resistant battery of the energy communication module 3 can normally work in a shaft with the temperature of more than 150 ℃, and the memory is used for storing data fed back by the measuring short section 2 through the transmission cable 11; the communicator is used for receiving and decoding ground signals, performing behavior control on the operation module measuring short section 2 through the transmission cable 11, and feeding behavior states back to the memory for storage or sending to the ground.
The ground device 23 in the embodiment of the invention can be a mud pulse generator commonly used in a drilling site and can also be other signal generating devices; if the mud pulse generator is used, the mud pulse generator is connected with a wellhead device 27 through a manifold, pulse signals are transmitted with fluid in the oil pipe annulus through a sleeve, and modulated signals are transmitted to the bottom hole energy communication module 3; if other signal generating devices are adopted, signal transmission needs to be carried out through other methods.
In the implementation process of the invention, the device is correctly installed before use, the stability of the transmission cable is ensured, once the energy communication module 3, the measuring short section 2 in the working module and the transmission cable 11 in the high-pressure hose 17 are installed, repeated disassembly is avoided, and the device is repeatedly used and maintained as a whole.
During installation, if the high-pressure hose 17 with the transmission cable 11 pre-buried inside is adopted, the relevant lines of the measuring short sections in the energy communication module and the working module can be connected with the buried transmission cable 11 in a wire and welding mode, connection can also be realized in a contact butt joint mode, and insulation and strength protection measures are applied after connection. If the method of pressing the transmission cable 11 is adopted, the positions of the inlet and the outlet of the transmission cable are kept consistent when the working modules and the energy communication modules 3 are installed at the two ends of the high-pressure hose, the axial consistency of the transmission cable 11 and the high-pressure hose 17 is ensured as far as possible, and the transmission cable 11 and the high-pressure hose 17 are prevented from being wound; after the installation is completed, the transmission cable 11 is pressed into the surface or surface rubber structure of the high-pressure hose 17.
After the installation is completed, the measuring nipple 2, the high-pressure hose 17, the transmission cable 11 and the energy communication module 3 of the working module are required to be used as a whole for subsequent installation and use, and can be recycled, but the disassembly among all the parts of the structure in the whole is required to be avoided as much as possible.
In the embodiment of the invention, the selection of the ground and underground communication modes can adopt the forms of mud pulse, cable transmission or wireless transmission to carry out the data communication between the ground and the underground.
If the mud pulse mode is adopted, the ground device 23 installed on the ground is a mud pulse device and is connected with the wellhead device 27 through a manifold, the modulation signal is transmitted to the well bottom energy communication module 3 in a mode of applying pressure pulse to fluid in the annular space of the casing and the oil pipe, and the action control of the measuring short joint in the working module is realized after the modulation signal is decoded.
If cable transmission or wireless transmission is adopted, the surface device 23 should be a corresponding signal generating device, and is connected with the coiled tubing 26 or the tubing 25 through a cable, and data communication between the surface and the underground is realized through the form of buried cables or wireless relays.
Similarly, if a corresponding communication short joint is additionally arranged between the energy communication module 3 and the coiled tubing 26, and a signal receiving and generating device is additionally arranged on the ground device 23, the communication from the well bottom data to the ground can also be realized, so that the bidirectional data communication between the well bottom and the ground is realized.
In the embodiment of the invention, the selection of the measurement mode can be measurement while drilling or measurement after drilling.
If a measurement while drilling mode is selected, the bottom drilling tool 1 comprises a jet flow nozzle, and the jet flow nozzle is in threaded connection with the measurement short section 2 in the working module. When the operation is started, the steering device 19 is lowered into the well to a specified position and direction through the oil pipe 25, and the position is locked in a hydraulic anchoring mode; the coiled tubing 26 is used for lowering the operation pipe string consisting of the energy communication module 3, the high-pressure hose 17, the transmission cable 11 and the operation module (the operation module comprises a bottom hole tool 1 and a measuring short section 2) into the bottom of the well, and the drilling and measuring or the independent measuring operation is carried out according to the preset program setting of the ground control or measuring short section 2. The tool is put in once, multi-layer and multi-directional drilling and track measurement operation is achieved, tool operation behaviors are controlled through ground instructions or pre-program setting, consumption of electric power and data storage space is reduced, operation and flexibility facing underground complexity are improved, operation time is reduced on the whole, operation cost is reduced, and operation efficiency and success rate are improved.
If the measurement is re-entered after the drilling is selected, the working module only needs to comprise a measuring short joint. After the drilling of the radial branch hole is finished, the coiled tubing is lifted up, the operation pipe string is replaced on the ground, the branch hole is re-entered, the operation behavior of a control tool is set through a ground instruction or a pre-program, the consumption of electric power and storage space is reduced, the flexibility of operation and facing underground complexity is improved, and the operation efficiency and the success rate are improved.
In the measuring process, if a high-speed wired or wireless transmission ground-underground communication mode is adopted, data obtained by the measuring short section 2 in the operation module can be uploaded to the ground in real time, so that an operation engineer can analyze the data in operation, obtain the state of the device, evaluate the operation effect, and carry out accident treatment on complex conditions such as re-entry failure, hose accumulation, nozzle failure, borehole collapse and the like in the modes of modifying a construction scheme, lifting and lowering a pipe column, starting and stopping a pump and the like.
And the storage device in the energy communication module is started at the default moment, and the measurement data is stored according to the set working parameters of the device by default. If the data is selected to be uploaded in real time, the memory performs rolling storage, and measurement data loss caused by data uploading faults is prevented.
The bottom hole tool in this embodiment may be: a rotary jet drill bit or a multi-hole jet drill bit or an end cap.
Fig. 2 is a schematic view of the operation module of the combination structure of the rotary jet drill head and the measurement module disclosed in this embodiment.
A jet drill bit 201 for performing jet drilling and providing power for advancing the tool; and the measuring nipple 2 is used for performing track measuring operation and structurally realizing the connection of the jet drill bit and the high-pressure hose.
The jet drill bit 201 is located at the foremost end of the drilling tool assembly and comprises a nozzle cap 2013, a rotor 2014, a stator 2015 and a connecting joint 2016, wherein the rotor 2014 is in threaded connection with the nozzle cap 2013, and the stator 2015 is in threaded connection with the connecting joint 2016.
The measuring nipple 2 is positioned between the jet drill and the high-pressure hose and comprises a shell 2029, a control and sensor 2027, a communication memory 2028 and a connecting line, wherein the shell 2029 is in threaded connection with the jet drill 201 through a connecting joint 2016, and the shell 2029 is in buckled connection with the high-pressure hose; the control and sensor 2027 and the communication memory 2028 are disposed in a slot of the housing 2029, and cover the first slot 20212 and the second slot 20213, and are connected to each other through an integrated circuit board, and the control and sensor 2027 and the communication memory 2028 are disposed in the slot, as shown in fig. 3, a front view of the measurement nipple and fig. 4, an assembly view of the measurement nipple.
In order to realize the function of the electronic part of the measuring short section and meet the space requirement, a special-shaped circuit board is required. As shown in fig. 4, the gyroscope, the magnetometer and the accelerometer in the measuring nipple are annularly arranged on the special-shaped circuit board 40, the special-shaped circuit board 40 comprises an annular circuit board 401 and a plurality of rectangular circuit boards 402, and the special-shaped circuit board 40 is an FPC or PCB circuit board.
In this embodiment, the special-shaped circuit board 40 is formed by a plurality of FPC or PCB planar circuit boards, and is matched with a special framework to realize three-dimensional special-shaped circuit boards. As shown in fig. 4. The special-shaped circuit board 40 is formed by mixing a PCB and an FPC, electronic elements such as sensors and controllers are dispersedly distributed on a rectangular circuit board 402 in the figure, and the rectangular circuit boards 402 are connected through an annular PCB 401 and exchange data. The special-shaped circuit board 40 is reinforced through an alloy framework of 3D printing. In this embodiment, the control and sensor 2027 is disposed on a rectangular circuit board 402, and the communication memory 2028 and the special-shaped circuit board 40 are connected by inserting pins or contacts. The communication memory 2028 and the special-shaped circuit board 40 form a special-shaped circuit board 40 distributed annularly through an annular alloy framework.
Before the first operation, the shell 2029 in the measuring nipple 2 is connected with the high-pressure hose 17, the communication memory 2028 is arranged in the second notch 20213, and the connecting wire 20211 penetrates out of the through hole at the rear end of the second notch 20213 and is pressed along the high-pressure hose for sealing.
Before the operation starts, the control and sensor 2027 in the measuring short joint 2 is connected with a computer by using a data line, the sensor is corrected and initialized, and measuring parameters are set. After completion, the control and sensor 2027 is inserted into the first notch 20212 of the measuring sub 2, and is connected to the communication memory 2028 by means of pins or contacts. And connecting the corresponding jet drill bits according to requirements. The connecting wire 20211 extending from the rear end of the high-pressure hose is connected with a computer to check the data of the measuring short section and the power communication quality. The high-pressure hose and the energy communication module are connected, and the tail end of the connecting wire 20211 is inserted into the energy and communication module. The power and communication module is connected to the front end of the coiled tubing 26 by a threaded connection.
During operation, after the steering gear parameter adjustment and casing windowing are completed, the device is put into the bottom of a well by using a coiled tubing 26 device, and jet drilling is started. The measuring pup joint 2 performs borehole trajectory measurement in the operation process according to the measurement parameters or ground control instructions set in the initialization process of the control and sensor 2027, and measurement data are stored off-line or uploaded to the ground according to the configuration of the communication memory 2028 and the energy communication module 3. After the jet drilling is finished, the operation pipe column is lifted out, the steering gear is adjusted and the casing is windowed again, meanwhile, the control and sensor 2027 in the measuring short section 2 is corrected and initialized again, and after the steering gear is adjusted and the casing is windowed, the device is continuously lowered into the device to perform the jet drilling and measuring integrated operation. And repeating the steps until the whole construction design is completed. Depending on the communication memory configuration, the measurement data may be obtained at the time of measurement or after the measurement is completed and coiled tubing 26 is tripped out.
After the operation is finished, the energy communication module 3 is detached from the tail end of the coiled tubing 26, and the tail end of the connecting wire 11 is detached from the energy and communication module; the jet drill bit is disassembled and the control and sensor 2027 in the measuring nipple 2 is taken out. Other accessories can not be disassembled, and the parts are simply cleaned and then are reserved for the next construction.
In the embodiment of the invention, the radial well drilling operation is not only realized by adopting a rotary jet drill bit, but also realized by adopting a porous jet drill bit. As shown in FIG. 5, the combination of the multi-hole jet drill bit 220 and the measuring nipple 2 can also realize the integrated operation of drilling and measuring in the radial well. The porous jet drill bit 220 is connected with the housing of the measuring nipple 2 by means of a thread.
Further, in the embodiment of the present invention, various modes of operations can be implemented by replacing the module. As shown in fig. 6, by replacing the jet drill 201 with the end cap 221, the measurement of the after-drilling re-entry type can be performed. The end cap 221 is threadedly connected to the housing portion of the gauging nipple 2.
In this embodiment, the energy communication module 3 is located between the high-pressure hose 17 and the coiled tubing 26, and includes three parts, namely a housing, a power supply and a communication memory; wherein, the shell is connected with the high-pressure hose 17 and the coiled tubing 26 through threads; the power supply and the communication memory are embedded in the shell; the power supply is used for providing energy for the measuring short section, and can be a battery or a power generation or power transmission device; the communication memory can be a memory chip or a communicator, and if the communication memory is a memory chip, the chip can be arranged in the measuring short section 2 or the energy communication module 3; in the case of a communicator, it is limited in size and can be installed only in the energy communication module 3.
In the embodiment of the present invention, the energy communication module 3 has multiple implementation manners, and the communication part may be a memory chip (for directly storing data), or may be a data transmission cable (embedded in the wall of the coiled tubing 26, or directly threaded from the space in the coiled tubing 26, so as to implement real-time data communication between the ground and the downhole, feed back downhole measurement data to the ground, or transmit a ground measurement operation instruction to the downhole), or may be a downhole communication tool such as mud pulse, a wireless transmitter, a repeater, etc. (which is consistent with the action of the data cable, but only changes the data transmission method). The energy part can be a high-temperature battery or a power cord (buried in the wall of the coiled tubing or directly threaded from the space in the coiled tubing). Specific implementations include, but are not limited to: [1] a memory chip + a high temperature battery; [2] memory chip + power line; [3] data line + high temperature battery; [4] data line + power line; [5] communication equipment such as a well bottom mud pulse/wireless transmitting device and the like, a high-temperature battery/a power line and the like. Of course, it is mentioned above that the mud pulse may be generated from the bottom of the well, received at the surface and decoded to enable transmission of the bottom of the well measurement data to the surface. Similarly, the surface can apply the mud pulse to the bottom hole reversely, and after the related equipment at the bottom hole decodes, the transmission of the surface instruction to the downhole measuring tool is realized. Wireless, wired ideas are similar to mud pulsing.
In the embodiment of the invention, an annular circuit board structure is adopted, the measuring short section and the energy communication module are split and modularly combined, the space distribution of the measuring short section is optimized, and the size limitation of the energy and communication module is removed in a mode that the energy communication module 3 is arranged at the tail end of a steering gear, so that the condition limitations of data storage, power supply endurance and the like of a measuring tool are removed.
In the prior art, the measurement data is directly stored in the memory chip, but the size is limited, and only 64Mb of data can be stored in general for about 3-4 hours; the charge of the button cell and the power consumption of the measuring element are also substantially at this level. Considering that the reason that the conventional measurement method is difficult to use for the radial well is the process characteristic of the conventional measurement method, the size of the tool is limited, so that the measurement nipple space is reasonably utilized by the method of the special-shaped circuit board, and the size requirement of a part of sensors is also relaxed on the basis that a fluid channel can be provided. Furthermore, due to the radial well process characteristics, i.e., the measurement tool needs to enter the radial well bore/borehole through an ultra-short radius turning trajectory, the tool size is limited; this patent carries out the split with energy communication module and measurement nipple joint, installs energy communication module in coiled tubing terminal, need not be through turning to the track, therefore has removed energy communication module's size restriction condition to improve the storage of instrument and electric quantity duration to a certain extent, also created the condition for operations such as real-time control/monitoring.
In the embodiment of the invention, the measuring tool in the measuring short joint comprises: the gyroscope, the magnetometer and the accelerometer are used for extracting the real-time attitude of the tool by acquiring the acceleration, the angular acceleration and the real-time magnetic field component of the movement of the device on the basis of the theory of integrated navigation and designing an algorithm and calculating the radial well track by combining the running speed of the drilling tool. Compared with the conventional drilling measurement while drilling tool, the dynamic track measurement method is adopted, and the measured data of the three sensors, namely the gyroscope, the magnetometer and the accelerometer, are comprehensively utilized, so that the track is closer to the actual drilling track. In addition, due to the adoption of MEMS elements, the tool size is obviously reduced (the length of the general measurement-while-drilling tool can reach half a meter or even more, the diameter of the tool is only 20mm, and the length of the tool is less than 60mm) by means of reasonable sensor type selection and tool structure optimization design, and the defect that the conventional track measurement tool cannot be applied to a radial well process is overcome. Meanwhile, due to the use of the tool, the defect of high re-entry failure rate after drilling of radial well trajectory measurement in the prior art is overcome, and the blank of the field of radial well trajectory measurement is filled.
Those skilled in the art will appreciate that the implementation forms of mud pulse, cabled transmission and wireless transmission in the surface and downhole data communication technology are not limited to the methods mentioned in the patent, and it is fully possible to implement multi-form surface and downhole data communication by using special additional equipment. The key point of the method is not to realize the ground and underground data communication and control by any method, but to connect the functions of measurement, power supply, control, data storage and the like in the measuring short section in a way of burying or pressing cables; the electric endurance and the storage space endurance of the tool are increased by arranging the independent energy communication short section, and the short section is positioned at the downstream of the coiled tubing and does not occupy the space of an actual operation tubular column, so that the tool is not limited by the size of a radial hole and the structure size of a steering gear, a battery, a storage device, a communicator and the like with better performance and larger capacity can be selected, and the application limit of parameters such as the temperature, the well depth, the hole diameter and the like of the device is widened; on the other hand, as much as possible accommodating space is provided for the measuring short section at the downstream of the operation pipe string, so that the measuring short section can adopt a high-temperature-resistant component with a larger size compared with a normal-temperature component adopted in the prior art, and the application range of a measuring tool is expanded; the behavior control of the measuring tool is realized by a ground and underground data communication method, so that the flexibility of operation and the flexibility facing underground complex conditions are improved, the operation efficiency and the success rate are improved, and the operation cost is reduced.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A radial well trajectory measurement device, comprising: the operation module and the energy communication module; the operation module is connected with the energy communication module through a high-pressure hose;
the operation module is arranged at the most downstream of the operation tubular column and is used for measuring and drilling a radial well track;
the energy communication module is arranged at the tail end of a continuous oil pipe in an operation tubular column and used for providing electric power for the operation module, performing behavior control on a measuring short section of the operation module in real time, transmitting the behavior state of the measuring short section to the ground in real time and realizing real-time data interaction between the operation module and ground equipment; the measuring short joint comprises a shell, a control and sensor, a communication memory and a connecting wire; the control and sensor comprises a gyroscope, a magnetometer and an accelerometer; the gyroscope, the magnetometer and the accelerometer are annularly arranged on the special-shaped circuit board; the special-shaped circuit board comprises an annular circuit board and a plurality of rectangular circuit boards, and the special-shaped circuit board is an FPC (flexible printed circuit) or a PCB (printed circuit board).
2. The radial well trajectory measurement device of claim 1, wherein the operational module comprises: a bottom hole; and the bottom drilling tool is in threaded connection with the measuring nipple.
3. The radial well trajectory measuring device of claim 2, wherein said bottom hole assembly is: a rotary jet drill bit or a multi-hole jet drill bit or an end cap.
4. The radial well trajectory measuring device of claim 2, wherein said gauging sub is provided with:
the gyroscope is used for acquiring angular acceleration data;
a magnetometer for acquiring real-time magnetic field components;
an accelerometer to acquire acceleration data.
5. A radial well trajectory measurement system, comprising: a radial well trajectory measurement device and surface equipment; wherein the content of the first and second substances,
the radial well trajectory measuring device comprises: the operation module and the energy communication module; the operation module is connected with the energy communication module through a high-pressure hose;
the operation module is arranged at the most downstream of the operation tubular column and is used for measuring the radial well track and drilling;
the energy communication module is arranged at the tail end of a continuous oil pipe in an operation tubular column and used for providing electric power for the operation module, performing behavior control on a measuring short section of the operation module in real time, transmitting the behavior state of the measuring short section to the ground in real time and realizing real-time data interaction between the operation module and ground equipment; the measuring short joint comprises a shell, a control and sensor, a communication memory and a connecting wire; the control and sensor comprises a gyroscope, a magnetometer and an accelerometer; the gyroscope, the magnetometer and the accelerometer are annularly arranged on the special-shaped circuit board; the special-shaped circuit board comprises an annular circuit board and a plurality of rectangular circuit boards, and the special-shaped circuit board is an FPC (flexible printed circuit) or a PCB (printed circuit board).
6. The radial well trajectory measurement system of claim 5, wherein the operation module comprises: a bottom hole; and the bottom drilling tool is in threaded connection with the measuring nipple.
7. The radial well trajectory measurement system of claim 6, wherein said bottom hole assembly is: a rotary jet drill bit or a multi-hole jet drill bit or an end cap.
8. The radial well trajectory measurement system of claim 6, wherein said gauging sub has disposed therein:
the gyroscope is used for acquiring angular acceleration data;
a magnetometer for acquiring real-time magnetic field components;
an accelerometer to acquire acceleration data.
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| CN112145169B (en) * | 2020-10-28 | 2021-09-07 | 中国科学院空间应用工程与技术中心 | Coiled tubing type deep lunar soil drilling system |
| CN113482533B (en) * | 2021-08-20 | 2022-08-30 | 大庆辰平钻井技术服务有限公司 | Completion system and completion method for ultra-short radius horizontal well universal perforated sieve tube |
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