CN118049200A - Horizontal well multistage fracturing and optical fiber monitoring system based on intelligent fracturing sliding sleeve - Google Patents
Horizontal well multistage fracturing and optical fiber monitoring system based on intelligent fracturing sliding sleeve Download PDFInfo
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- CN118049200A CN118049200A CN202410284154.1A CN202410284154A CN118049200A CN 118049200 A CN118049200 A CN 118049200A CN 202410284154 A CN202410284154 A CN 202410284154A CN 118049200 A CN118049200 A CN 118049200A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 109
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000010008 shearing Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 230000001012 protector Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 11
- 230000001681 protective effect Effects 0.000 abstract description 7
- 208000010392 Bone Fractures Diseases 0.000 abstract description 5
- 206010017076 Fracture Diseases 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 20
- 210000000078 claw Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- 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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- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
-
- 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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/06—Sleeve valves
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention relates to the technical field of oilfield development, in particular to a horizontal well multistage fracturing and optical fiber monitoring system based on an intelligent fracturing sliding sleeve, which comprises a fracturing sliding sleeve, an opening tool and a ground control end. The nearby threaded holes can be selected to install the optical fiber protective cover before the well is run in according to the construction condition, so that the bending of the pipeline can be effectively reduced, the fracture risk of the optical fiber is reduced, and the installation flexibility is realized; meanwhile, the installation position of the optical fiber protective cover avoids the fracturing channel, so that the fracturing fluid is ensured to be sprayed and splashed during the fracturing process, and the optical fiber is ensured to be splashed and damaged.
Description
Technical Field
The invention relates to the technical field of oilfield development, in particular to a horizontal well multistage fracturing and optical fiber monitoring system based on an intelligent fracturing sliding sleeve.
Background
The horizontal well has become the important way of improving the comprehensive benefit of oil field exploration and development for better improving the oil field recovery ratio or carrying out the production increase to the horizontal well of low permeability hydrocarbon reservoir and reform, just need to adopt some yield increase technique, according to development and research in recent years, current fracturing sliding sleeve adopts multistage ball-throwing sliding sleeve, every level sliding sleeve corresponds an oil and gas layer in the pit, the internal diameter of ball-throwing sliding sleeve of every level is from bottom to top grow, fracturing progression is limited by opening tool diameter, accomplish opening and fracturing to each layer sliding sleeve through throwing into steel ball/composite ball of different diameters from the well head, need many soluble balls of different sizes, not only the operation is complicated, and the process is complicated, required time is long, the operating efficiency is low, well control risk is big. Because the sliding sleeve has compact structure, the requirement of logging optical fiber and the sliding sleeve for logging together cannot be met, and the logging optical fiber cannot be effectively protected. The process of bridge-shot fracturing cannot effectively avoid logging optical fibers during perforation operation, and the optical fibers are easy to be broken during operation.
Disclosure of Invention
The invention provides a horizontal well multistage fracturing and optical fiber monitoring system based on an intelligent fracturing sliding sleeve, which aims to effectively reduce the tortuosity of a pipeline and reduce the fracture risk of optical fibers.
The utility model provides a horizontal well multistage fracturing and optic fibre monitoring system based on intelligent fracturing sliding sleeve, includes fracturing sliding sleeve and opening tool, still includes ground control end, is provided with optic fibre in the fracturing sliding sleeve, and ground control end passes through optic fibre real time monitoring underground fluid parameter variation, is equipped with the optic fibre protector of protection optic fibre on the fracturing sliding sleeve.
The optical fiber protector is an optical fiber protection cover detachably connected to the fracturing sliding sleeve, an optical fiber passing channel is formed between the optical fiber protection cover and the outer wall of the fracturing sliding sleeve, and the optical fiber is positioned in the optical fiber passing channel.
The fiber crossing channel is parallel to the axis of the fracturing sliding sleeve.
The outer wall that fracturing sliding sleeve set up is provided with two at least first mounting holes that have the internal screw thread on, makes the optic fibre safety cover pass through the screw and installs in the different first mounting hole departments of fracturing sliding sleeve.
A line for installation on a well is also included to traverse the wellhead.
Still include the sleeve pipe, be provided with the coupling between sleeve pipe and the fracturing sliding sleeve, the sleeve pipe can be dismantled with the coupling and be connected, and the fracturing sliding sleeve can be dismantled with the coupling and be connected.
The fracturing sliding sleeve comprises an upper joint, the lower end of the upper joint is detachably connected in the upper end of a sliding sleeve shell, the circumference of the sliding sleeve shell is uniformly distributed with a through hole, a second mounting hole is further formed in the sliding sleeve shell, a shearing pin arranged in the second mounting hole is screwed on the sliding sleeve shell through threads, a sliding sleeve inner core is arranged in the sliding sleeve shell, the lower end of the sliding sleeve inner core is fixed through the tight pushing of the shearing pin, an opening tool is clamped in the sliding sleeve inner core, and the lower end of the sliding sleeve shell is screwed with the upper end of the connecting sleeve through threads.
The outer wall part of the sliding sleeve inner core is necked down, a groove is formed in the position of the necking down, and a clamping ring is installed in the groove.
The opening tool is an intelligent tag with automatic detection and diameter changing functions, after the opening tool is clamped in the sliding sleeve inner core, the shearing pin is sheared by pressing in the down-hole tubular column, the sliding sleeve inner core moves downwards under the action of pressure, the sliding sleeve inner core enters the connecting sleeve until the lower end face of the sliding sleeve inner core is in contact with the upper end face of the lower connector to stop, at the moment, the overflow port is completely exposed, and the fracturing sliding sleeve is completely opened.
The horizontal well multistage fracturing and optical fiber monitoring system based on the intelligent fracturing sliding sleeve has the beneficial effects that:
The nearby threaded holes can be selected to install the optical fiber protective cover before the well is run in according to the construction condition, so that the bending of the pipeline can be effectively reduced, the fracture risk of the optical fiber is reduced, and the installation flexibility is realized; meanwhile, the installation position of the optical fiber protective cover avoids the fracturing channel, so that the fracturing fluid is ensured to be sprayed and splashed during the fracturing process, and the optical fiber is ensured to be splashed and damaged.
The optical fiber sensor is arranged in the well-descending sliding sleeve, and the optical fiber sensor is connected with the ground detection end through the pipe optical fiber to communicate test data, so that the function of monitoring the underground oil parameters in real time through the measurable optical fiber is realized.
The opening tool selects an intelligent label with automatic detection and diameter changing functions to open a specified sliding sleeve, and after the sliding sleeve is opened, the sliding sleeve is continuously pressurized through a pump truck to carry out fracturing and rock breaking operation. The optical fiber traversing channel is arranged on the fracturing sliding sleeve, so that a plurality of optical fibers can be simultaneously lowered into the well along with the pipe column, and meanwhile, the optical fibers can be effectively protected in the underground process, and a limited detection means is provided for the fracturing process.
Drawings
FIG. 1 is a schematic diagram of a horizontal well multistage fracturing and optical fiber monitoring system based on an intelligent fracturing sliding sleeve;
FIG. 2is a schematic view of a fracturing sleeve portion of the system of the present invention;
FIG. 3 is a schematic diagram of a fracturing sliding sleeve according to the present invention;
FIG. 4 is a cross-sectional view taken at H-H of FIG. 3;
FIG. 5 is a partial schematic view of FIG. 3;
FIG. 6 is a partial schematic view of FIG. 5;
FIG. 7 is a second schematic structural view of a fracturing sleeve;
FIG. 8 is a partial schematic view of FIG. 7;
FIG. 9 is a schematic front view of the fracturing sleeve on the side where the optical fiber protective cover is mounted;
FIG. 10 is a cross-sectional view of the P-P, K-K and O-O of FIG. 9;
FIG. 11 is a schematic side view of the fracturing sleeve on the side where the optical fiber protective cover is installed;
FIG. 12 is a schematic diagram of an initial state of a fracturing sleeve;
FIG. 13 is a schematic diagram of the fracturing sleeve in an open state;
FIG. 14 is a schematic view of the structure of the opener;
FIG. 15 is a schematic view of an opening tool within a fracturing sleeve;
fig. 16 is a schematic diagram of a smart tag architecture.
In the figure: a sleeve A1; an optical fiber A2; coupling A3; an optical fiber protector A4; fracturing the sliding sleeve A5; opening tool A6; a ground control end A7; the pipeline passes through the wellhead A8; an optical fiber protection cover 1; an upper joint 2; a sliding sleeve housing 3; a sliding sleeve inner core 4; shearing the pin 5; a locking ring 6; a connecting sleeve 7; an adapter sleeve 8; the optical fiber passes through the channel 9; an optical fiber sensor 10; an optical fiber splitter 11; a lower joint 12; an input optical fiber connector 13; an output fiber optic connector 14; a female socket 15; a plug fixing member 16; socket male B1; a male fixing member B2; a joint housing B3; tightening the nut B4; a joint sealing sleeve B5; an optical fiber sealing member B6; a locking sleeve B7; a locking inner sleeve B8; a locking jacket B9; an outer case 101; a power module 102; a claw 103; an execution module 104; a press sleeve 105; a seal cartridge 106; a detection module 107.
Detailed Description
A horizontal well multistage fracturing and optical fiber monitoring system based on an intelligent fracturing sliding sleeve comprises an uphole part and a downhole part;
Referring to fig. 1, the downhole part comprises a well casing column and an opening tool A6, the well casing column comprises a casing A1 and a fracturing sliding sleeve A5 detachably connected to the lower end of the casing A1, preferably, a coupling A3 is arranged between the casing A1 and the fracturing sliding sleeve A5, and the casing A1 and the fracturing sliding sleeve A5 are detachably connected with the coupling A3 through threaded connection;
Further, referring to fig. 2, the optical fiber protector A4 includes an optical fiber protection cover 1 fixedly connected to an outer wall of the inside of the fracturing sliding sleeve A5, and an optical fiber channel parallel to the axis of the fracturing sliding sleeve A5 is formed between the optical fiber protection cover 1 and the outer wall of the fracturing sliding sleeve A5, and the underground part further includes an optical fiber A2 disposed in the optical fiber passing channel 9, so that the optical fiber A2 is not damaged in the process of following the well string to go into the well and the fracturing operation.
Further illustratively, referring to fig. 3 and 7, fracturing sleeve A5 includes: the lower end of the upper joint 2 is screwed in the upper end of the sliding sleeve shell 3 through threads, through-flow ports are uniformly distributed on the circumference of the sliding sleeve shell 3, referring to fig. 9 to 11, a plurality of first mounting holes and second mounting holes in different positions are further formed in the sliding sleeve shell 3, different first mounting holes can be selected according to actual conditions during site operation so as to select the mounting position of the optical fiber protection cover 1, and a shear pin 5 arranged in the second mounting hole is screwed on the sliding sleeve shell 3 through threads, so that the optical fiber protection cover 1 can be mounted in a nearby threaded hole according to construction conditions before the sliding sleeve shell 3 is put down in the well, the bending of a pipeline can be effectively reduced, the fracture risk of the optical fiber is reduced, and the mounting flexibility is realized; meanwhile, the installation position of the optical fiber protective cover 1 avoids a fracturing channel, so that the fracturing fluid is prevented from being sprayed and splashed during the fracturing process, and the optical fiber is prevented from being splashed and damaged. The sliding sleeve shell 3 is internally provided with a sliding sleeve inner core 4, the lower end of the sliding sleeve inner core 4 is fixed by propping up of a shear pin 5, the outer wall of the sliding sleeve inner core 4 is locally necked down, a groove is arranged at the position of the neck down, a clamping ring 6 is arranged in the groove, an opening tool A6 is clamped in the sliding sleeve inner core 4, and the lower end of the sliding sleeve shell 3 is internally screwed with the upper end of a connecting sleeve 7 through threads;
Further, referring to fig. 4, 5 and 7, an adapter sleeve 8 is arranged below the adapter sleeve 7, a first external thread is arranged on the periphery of the upper end of the adapter sleeve 8, a second external thread is arranged on the periphery of the lower end of the adapter sleeve 8, the inside of the lower end of the adapter sleeve 7 is screwed with the first external thread of the adapter sleeve 8 through threads, a lower joint 12 is arranged below the adapter sleeve 8, the inside of the upper end of the lower joint 12 is screwed on the second external thread of the adapter sleeve 8 through threads, the top of the outer wall of the lower joint 12 is connected with the bottom of the adapter sleeve 7, so that the adapter sleeve 8 is positioned inside the lower joint 12, a placing space is formed between the outer wall of the lower side of the adapter sleeve 8 and the outer wall of the upper side of the lower joint 12, two optical fiber sensors 10 are arranged in the placing space, the inner wall of the lower joint 12 is provided with a first shoulder part positioned in the placing space, the end face of the first shoulder faces upwards, two mirror-symmetrical circular mounting holes are respectively screwed in the two circular mounting holes through threads, and the two optical fiber sensors 10 can detect real-time fracture parameters of a fracturing fluid in a fracturing section; the inside of the lower joint 12 is provided with a second shoulder part positioned below the first shoulder part, the bottom of the adapter sleeve 8 is propped against the second shoulder part, the inner diameter of the upper part of the adapter sleeve 8 is unchanged after being reduced from top to bottom, and the inner diameter of the inner wall at the minimum inner diameter of the adapter sleeve 8 is equal to the inner diameter of the inner wall at the minimum inner diameter of the lower joint 12; an optical fiber sensor 10 is arranged in the placing space, a connecting wire of the optical fiber sensor 10 is connected with an optical fiber branching device 11, and the optical fiber branching device 11 is connected with a socket female head 15 through an optical fiber wire; the optical fiber line is an optical fiber preset in the equipment during equipment assembly, and the optical fiber A2 is an optical fiber preset on the surface of the equipment during site construction;
Preferably, referring to FIG. 8, the enlarged diameter machined into the lower connector 12 is shown to allow the fiber optic sensor 10 to contact the equipment passageway so that the fiber optic sensor 10 can detect a fluid parameter within the equipment passageway;
Further illustration, a third shoulder with a downward end face is arranged outside the lower connector 12, two connector mounting holes in mirror symmetry are arranged on the third shoulder, the connector mounting holes and the sensor mounting holes are distributed at an included angle of 90 degrees, an input optical fiber connector 13 and an output optical fiber connector 14 are arranged in the connector mounting holes, a socket fixing piece 16 is fixedly connected in the connector mounting holes, a socket mounting hole is arranged in the middle of the socket fixing piece 16, and a socket female connector 15 is fixedly connected in the socket mounting hole;
Further illustratively, referring to FIG. 6, the input fiber optic splice 13 includes a receptacle male B1, a male mount B2, a splice housing B3, and a tightening nut B4; the output optical fiber connector 14 comprises a connector sealing sleeve B5, an optical fiber sealing member B6, a locking sleeve B7, a locking inner sleeve B8 and a locking outer sleeve B9;
The lower end of the socket female head 15 is fixedly connected with a socket male head B1, the lower end of the socket male head B1 is detachably connected with a male head fixing piece B2, the detachable connection mode is preferably plug-in connection, and the interference fit ensures the stability of the socket male head (B1) embedded in the male head fixing piece (B2);
The outside of the male head fixing part B2 is inserted with a joint housing B3, the middle part of the outer surface of the joint housing B3 is provided with an inward concave notch, the notch is provided with a tightening nut B4, the tightening nut B4 is arranged as a butt joint, the butt joint is divided into two bodies and installed in the notch on the joint housing B3, the periphery of the lower end of the joint housing B3 is connected with a joint sealing sleeve B5 through threads, an optical fiber sealing part B6 is arranged in the joint sealing sleeve B5, the upper end of the optical fiber sealing part B6 is abutted against the lower end of the joint housing B3, the lower end of the optical fiber sealing part B6 is abutted against the inward convex shoulder on the lower side of the joint sealing sleeve B5, the lower end of the joint sealing sleeve B5 is connected with the upper end of a locking sleeve B7 through threads, a locking inner sleeve B8 distributed up and down and a locking outer sleeve B9 are arranged in the locking part B7, the locking outer sleeve B8 is provided with an inner wedge surface of a slit, the locking outer sleeve B9 is provided with an inner wedge surface, the locking inner wedge 8 and the two wedge surfaces of the locking outer sleeve B9 are tightly matched, when the locking part B7 is tightly screwed on the joint sealing sleeve B5 through threads, the upper end of the joint sealing sleeve B6 abuts against the lower end of the joint housing B3, the optical fiber sensor B2 is pressed by the optical fiber sensor B2, and the whole sensor line sensor is pressed by the optical fiber sensor B2, and the optical fiber sensor is pressed, and the whole sensor is connected with the optical fiber sensor B; the tightening nut B4 is designed to be of a split 2-half structure, two halves of the workpiece are combined to form a complete thread, and only the tightening nut B4 is required to be rotated in the process of screwing the input optical fiber connector 13 into the lower connector 12, so that the whole input optical fiber connector 13 is guaranteed not to rotate, and the problem of rotation damage during optical fiber connection is solved.
Preferably, each sealing position such as a groove is filled with a fluororubber sealing ring for sealing treatment.
Preferably, the optical fiber protection cover 1 is screwed into the second mounting hole by using a screw to be fixed on the outer surface of the sliding sleeve housing 3, and a circumferential mounting hole is arranged on the sliding sleeve housing 3.
Further illustratively, the principles of operation of the downhole portion include opening and closing of fracturing sleeve A5:
Firstly, referring to fig. 14 and 15, after an opening tool A6, such as an intelligent tag with automatic detection and diameter changing functions, is locked on a sliding sleeve inner core 4, a shearing pin 5 is sheared by pressing in a down-hole tubular column, the sliding sleeve inner core 4 moves downwards under the action of pressure, the sliding sleeve inner core 4 enters a connecting sleeve 7 until the lower end surface of the sliding sleeve inner core 4 is in contact with the upper end surface of a lower joint 8, at the moment, a through-flow port is completely exposed, and a fracturing sliding sleeve A5 is completely opened;
Wherein, as shown in fig. 12, when the intelligent label detects the target sliding sleeve, the intelligent label is returned to be in an open state under the action of the underground pressure; as shown in fig. 13, after the intelligent label is opened, the intelligent label is blocked in the sliding sleeve inner core of the sliding sleeve to block the sliding sleeve channel, and the label blocked in the sliding sleeve inner core is pushed to move downwards under the pressurization of the ground pump truck, so that the sliding sleeve inner core shears move downwards to open the sliding sleeve.
When the overflow port is completely exposed, the clamping ring 6 moves to a set position, namely, a matching groove is formed in the inner wall of the sliding sleeve shell 3 at the position, the clamping ring 6 expands into the matching groove to clamp the sliding sleeve inner core 4, the sliding sleeve valve core is limited to move, the sliding sleeve cannot be closed by mistake, and the fracturing sliding sleeve A5 is opened.
And secondly, closing the fracturing sliding sleeve A5 when the sliding sleeve inner core 4 completely covers the flow passage.
The underground parameter change detection system comprises an underground part, a well part and a control part, wherein the underground part comprises a ground control end A7 and a pipeline penetrating through a wellhead A8, and the ground control end A7 can analyze data transmitted by an optical fiber A2 and detect underground parameter change in real time; the pipeline passes through the wellhead A8 to be a fracturing wellhead and can pass through the optical fiber A2;
Provided is a smart tag:
referring to fig. 16, the smart tag includes an outer case 101, a power module 102, a claw 103, an execution module 104, a press sleeve 105, a seal cartridge 106, and a detection module 107;
a power module 102 is mounted within the outer housing 101 for powering the 104 execution module and the 107 detection module;
The outer shell 101 is provided with mounting grooves, the claws 103 are circumferentially and uniformly distributed in the mounting grooves formed in the outer shell 101, the claws 103 are connected with the execution module 104 in the outer shell, and the claws 103 can be outwards expanded under the driving of the execution module 104, so that the claws 103 are in clamping engagement with a target sliding sleeve;
The surface of the outer shell 101 is provided with a ring groove, the ring groove is positioned on the right side of the mounting groove, the sealing cylinder 106 is mounted in the ring groove, the pressing sleeve 105 is arranged on the left side of the sealing cylinder 106, the pressing sleeve 105 is connected with the execution module 104 in the outer shell 101, the pressing sleeve 105 can move to the right side in the mounting groove formed in the outer shell 101 under the driving of the execution module 104, and when the pressing sleeve 105 moves rightwards, the sealing cylinder 106 is compressed to expand outwards, so that the sealing cylinder 106 is matched with the inner wall of the sliding sleeve to realize setting;
the detection module 107 is provided in the outer housing 101 for identifying whether the target is an open segment.
The 104 execution module can generate driving force by generating high-pressure gas through gunpowder detonation, providing linear thrust by an electric push rod, providing expanding force by motor torque and the like;
The working principle of the underground part and the uphole part is matched:
The optical fiber sensor 10 in the fracturing sliding sleeve A5 detects the well fluid parameter change in the sliding sleeve in real time, and transmits data to the ground control end A7 in real time through the optical fiber A2, and the ground control end A7 receives analysis data. The intelligent label with the automatic detection and diameter changing functions is used for opening the appointed sliding sleeve, the pumping truck is used for continuously pressurizing after the sliding sleeve is opened to carry out fracturing and rock breaking operation, and as the inner diameter size of the sliding sleeve in the well is uniform in diameter, the opening tool A6 is uniform in size, all producing layers are fractured by the opening tool A6 with the same diameter, the opening tool A6 can be automatically dissolved after the fracturing operation is finished, and a tool is not required to be used for drilling and milling a ball seat. The optical fiber traversing channel 9 is arranged on the fracturing sliding sleeve A5, so that a plurality of optical fibers A2 can be simultaneously used for descending along with a pipe column, and meanwhile, the optical fibers A2 can be effectively protected in the underground process, and an effective detection means is provided for the fracturing process.
Claims (10)
1. Horizontal well multistage fracturing and optical fiber monitoring system based on intelligent fracturing sliding sleeve, including fracturing sliding sleeve (A5) and opening tool (A6), still include ground control end (A7), its characterized in that is provided with optic fibre (A2) in fracturing sliding sleeve (A5), ground control end (A7) passes through optic fibre (A2) real time monitoring underground fluid parameter variation, is equipped with optical fiber protector (A4) of protection optic fibre (A2) on fracturing sliding sleeve (A5).
2. The horizontal well multistage fracturing and optical fiber monitoring system based on the intelligent fracturing sliding sleeve according to claim 1, wherein the optical fiber protector (A4) is an optical fiber protection cover (1) detachably connected to the fracturing sliding sleeve (A5), an optical fiber traversing channel (9) is formed between the optical fiber protection cover (1) and the outer wall of the fracturing sliding sleeve (A5), and the optical fiber (A2) is located in the optical fiber traversing channel (9).
3. The horizontal well multistage fracturing and optical fiber monitoring system based on intelligent fracturing slide sleeve according to claim 2, wherein the optical fiber traversing channel (9) is parallel to the axis of the fracturing slide sleeve (A5).
4. The horizontal well multistage fracturing and optical fiber monitoring system based on the intelligent fracturing sliding sleeve, according to claim 2, wherein at least two first mounting holes with internal threads are formed in the outer wall of the fracturing sliding sleeve (A5), and the optical fiber protection cover (1) is mounted at different first mounting holes of the fracturing sliding sleeve (A5) through screws.
5. The horizontal well multistage fracturing and optical fiber monitoring system based on intelligent fracturing slide sleeve of claim 1, further comprising a pipeline traversing wellhead (A8) for installation on a well.
6. The horizontal well multistage fracturing and optical fiber monitoring system based on the intelligent fracturing sliding sleeve of claim 1, further comprising a sleeve (A1), a coupling (A3) is arranged between the sleeve (A1) and the fracturing sliding sleeve (A5), the sleeve (A1) is detachably connected with the coupling (A3), and the fracturing sliding sleeve (A5) is detachably connected with the coupling (A3).
7. The horizontal well multistage fracturing and optical fiber monitoring system based on intelligent fracturing sliding sleeve according to any one of claims 1 to 6, fracturing sliding sleeve (A5) comprises an upper joint (2), the lower end of the upper joint (2) is detachably connected in the upper end of a sliding sleeve shell (3), through-flow openings are uniformly distributed on the circumference of the sliding sleeve shell (3), second mounting holes are further formed in the sliding sleeve shell (3), a shearing pin (5) arranged in the second mounting holes is screwed on the sliding sleeve shell (3), a sliding sleeve inner core (4) is arranged in the sliding sleeve shell (3), the lower end of the sliding sleeve inner core (4) is fixed through propping of the shearing pin (5), an opening tool (A6) is clamped in the sliding sleeve inner core (4), and the upper end of a connecting sleeve (7) is screwed in the lower end of the sliding sleeve shell (3).
8. The horizontal well multistage fracturing and optical fiber monitoring system based on the intelligent fracturing sliding sleeve, which is disclosed by claim 7, wherein the outer wall of the sliding sleeve inner core (4) is provided with a local necking, a groove is arranged at the necking position, and a clamping ring (6) is arranged in the groove.
9. The horizontal well multistage fracturing and optical fiber monitoring system based on the intelligent fracturing sliding sleeve according to claim 7, wherein the opening tool (A6) is an intelligent tag with automatic detection and reducing functions.
10. The horizontal well multistage fracturing and optical fiber monitoring system based on the intelligent fracturing sliding sleeve, according to claim 7, after the opening tool (A6) is clamped on the sliding sleeve inner core (4), the shearing pin (5) is sheared by pressing in a descending tubular column, the sliding sleeve inner core (4) moves downwards under the action of pressure, the sliding sleeve inner core (4) enters the connecting sleeve (7) until the contact of the lower end face of the sliding sleeve inner core (4) and the upper end face of the lower connector (8) is stopped, at the moment, the overflow is completely exposed, and the fracturing sliding sleeve (A5) is completely opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410284154.1A CN118049200B (en) | 2024-03-13 | 2024-03-13 | Horizontal well multistage fracturing and optical fiber monitoring system based on intelligent fracturing sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN118049200B (en) | 2024-09-17 |
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