CN112761579A - Slip linkage device for intelligent opening device, intelligent opening device and multistage fracturing intelligent control system - Google Patents
Slip linkage device for intelligent opening device, intelligent opening device and multistage fracturing intelligent control system Download PDFInfo
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- CN112761579A CN112761579A CN202110125361.9A CN202110125361A CN112761579A CN 112761579 A CN112761579 A CN 112761579A CN 202110125361 A CN202110125361 A CN 202110125361A CN 112761579 A CN112761579 A CN 112761579A
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- 230000008054 signal transmission Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 2
- 239000000306 component Substances 0.000 description 25
- 230000009286 beneficial effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 9
- 238000005086 pumping Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
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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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/066—Valve arrangements for boreholes or wells in wells electrically actuated
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Abstract
The invention relates to the field of petroleum underground construction, in particular to a slip linkage device, an intelligent opening device and a multistage intelligent fracturing control system for an intelligent opening device, which comprise: a first slip assembly and a second slip assembly disposed on the linkage body; the first slip assembly comprises a slip drive member and a first slip; the second slip assembly comprises a second slip, the first slip drives the second slip to expand and keep an expanded state, and the second slip extends out of the surface of the linkage body. After the first slip in the first slip assembly is deployed, even if not fully deployed, as long as it is partially deployed, the first slip drives the second slip to deploy and extend out of the surface of the linkage body when the first slip moves to the limit position of the sleeve. That is to say, the effective opening of the second slip is ensured by the aid of the thrust of the first slip, and the problem of failure in unfolding of the slips is avoided.
Description
Technical Field
The invention relates to the field of petroleum underground construction, in particular to a slip linkage device for an intelligent opening device, the intelligent opening device and a multistage intelligent fracturing control system.
Background
In the downhole tool of the packer + sliding sleeve horizontal well staged fracturing technology, the sliding sleeve is one of core components, and the opening mode of the sliding sleeve has great influence on the structure of a shaft and ground equipment, and the time and cost of fracturing construction.
The fracturing sliding sleeve is opened in various ways, a common method is that a ball is thrown from a well mouth, and after the ball falls to the sliding sleeve position, the ball is pressurized to an oil pipe, and the fracturing ball is pushed by hydraulic pressure to open the sliding sleeve. The process of bowling is simple, opens reliably, but the sliding sleeve latus rectum on the fracturing string reduces along the direction of root end to toe end gradually, and when big discharge capacity fracturing construction, the sliding sleeve of toe end can produce apparent throttling action to fracturing fluid for ground fracturing equipment operating mode worsens, so the progression of staged fracturing will receive the restriction.
In order to overcome this problem, sliding sleeves have been developed, in which a flexible ball seat is provided, the ball seat is often made into a split type or an open type, the diameter of the split ball seat is larger than that of the fracturing ball, the flexible ball seat is compressed into a complete ball seat by means of fluid force, and the sliding sleeve is opened. The disadvantage of this tool is that the structure is complex and the hydraulic feedback line is exposed to the wellbore and is vulnerable to damage.
With the development of the technology, a novel electric control sliding sleeve appears, wherein the main functional components of the sliding sleeve are an electronic controller and an electric actuating mechanism, and the electric actuating mechanism is required to push the sliding sleeve to move in order to open the sliding sleeve; the existing slip clamping jaw opening mode is basically a mode of releasing a spring, and the slip is not completely opened due to the fact that the speed of an electric actuating mechanism in a well is high, so that the sliding sleeve is failed to open.
Disclosure of Invention
The invention aims to solve the technical problem of providing a slip linkage device, an intelligent opening device and a multistage intelligent fracturing control system for an intelligent opening device so as to improve the reliability of the slip of an electric actuating mechanism during the process of expanding.
The technical scheme for solving the technical problems is as follows:
a slip linkage for an intelligent opening device, comprising:
the slip control device comprises a linkage device body, a first slip component and a second slip component, wherein the first slip component and the second slip component are arranged on the linkage device body;
the first slip assembly comprises a slip driving component and a first slip, the slip driving component drives the first slip to be unfolded and keeps an unfolded state, and the first slip extends out of the surface of the linkage device main body;
the second slip assembly comprises a second slip, the first slip drives the second slip to expand and keep an expanded state, and the second slip extends out of the surface of the linkage body.
The working principle and the beneficial effects of the invention are as follows: first slips subassembly sets up the one end of aggregate unit main part, also be first slips in the first slips subassembly can expand earlier, as long as first slips expands the back, receives the ascending thrust of aggregate unit main part axial at first slips, through first slips drive the second slips is expanded and is stretched out the surface of aggregate unit main part. After the first slip in the first slip assembly is deployed, even if not fully deployed, as long as it is partially deployed, the first slip drives the second slip to deploy and extend out of the surface of the linkage body when the first slip moves to the limit position of the sleeve. That is to say, the effective opening of the second slip is ensured by the aid of the thrust of the first slip, and the problem of failure in unfolding of the slips is avoided.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the slip driving member comprises a center rod and an extensible elastic member;
one end of the tensile elastic component is connected with the other end of the linkage device main body, and the other end of the tensile elastic component is connected with one end of the central rod;
the central rod is arranged in the linkage device main body in a sliding mode, the other end of the central rod is connected with one end of the linkage device main body through a driving starting device, the tensile elastic component drives the central rod to move towards the other end of the linkage device main body and drives the first slip to be unfolded and keep the unfolded state, and the first slip extends out of the surface of the linkage device main body.
The beneficial effect of adopting the further scheme is that: by arranging the central rod and the tensile elastic component, after the starting device is driven to start, the other end of the central rod is separated from the linkage device main body, the tensile elastic component drives the central rod to move towards the other end of the linkage device main body and drives the first slip to be unfolded and keep an unfolded state, and the first slip extends out of the surface of the linkage device main body, so that the first slip is ensured to be smoothly opened.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the center rod end away from the tensile elastic component is provided with a limiting table for keeping the first slip in an unfolding state.
The beneficial effect of adopting the further scheme is that: through setting up the spacing platform that prevents that the slips from retracting, after drive starting drive started, first slips was in the state of expanding, avoided the slips to retract, had improved slips aggregate unit's reliability.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, the other end of the linkage device main body is connected with an opening through which the central rod passes, a stop block is arranged at the opening, and the stop block is connected with one end of the tensile elastic component.
The beneficial effect of adopting the further scheme is that: through setting up the opening, the installation of well core rod of being convenient for.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, the other end of the linkage device main body is provided with a second slip groove for accommodating a second slip, the bottom surface of the second slip groove is an inclined surface which is gradually far away from the axis of the linkage device main body in the direction of the other end of the linkage device main body, and the second slip is arranged on the bottom surface in a sliding manner.
The beneficial effect of adopting the further scheme is that: through the contact of the second slip and the inclined plane, when the second slip is pushed and extruded by the first slip in the direction of the other end of the linkage device main body, the second slip extends out of the surface of the linkage device main body, and meanwhile, the second slip which is unfolded is prevented from retracting.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the compressive strength of the first slip is less than the compressive strength of the second slip.
The beneficial effect of adopting the further scheme is that: through setting up above-mentioned structure, the intensity of the first slips of slips in front that is to say is lower, and its transmission and driven effect mainly, the compressive strength of second slips is higher, can play the effect of pressure-bearing.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the first slip and the second slip are uniformly distributed on the periphery of the linkage device main body.
The beneficial effect of adopting the further scheme is that: through the equipartition setting, ensure the equilibrium of each slips atress, improve aggregate unit's reliability.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the number of the first slips is the same as the number of the second slips.
The beneficial effect of adopting the further scheme is that: the quantity of the second slips improves the bearing capacity of the second slips.
The invention also provides an intelligent opening device; the method comprises the following steps:
the back section of the opening device, the front section of the opening device and the slip linkage device for the intelligent opening device are arranged;
the rear section of the opening device is connected with the other end of the linkage device main body, and the front section of the opening device is connected with one end of the linkage device main body.
And a driving control device for starting the slip driving part is arranged in the front section of the opening device, and the driving control device is connected with the slip driving part.
The working principle and the beneficial effects of the invention are as follows: because among the intelligent opening device, first slips subassembly is through setting up the one end of aggregate unit main part, also be first slips in the first slips subassembly can expand earlier, as long as first slips expands the back, receives radial ascending thrust at first slips, through first slips drive the second slips expands and stretches out the surface of aggregate unit main part. After the first slip in the first slip assembly is deployed, even if not fully deployed, as long as it is partially deployed, the first slip drives the second slip to deploy and extend out of the surface of the linkage body when the first slip moves to the limit position of the sleeve. That is to say, the effective opening of the second slip is ensured by the aid of the thrust of the first slip, and the problem of failure in unfolding of the slips is avoided.
The invention also provides a multistage intelligent fracturing control system, which comprises:
the sliding sleeve assembly comprises an outer sliding sleeve and an inner sliding sleeve, and the outer sliding sleeve is circumferentially provided with holes penetrating through the outer sliding sleeve in the radial direction; the inner wall of one end of the inner sliding sleeve is provided with a limiting boss, the inner sliding sleeve is fixedly sleeved on the inner wall of the outer sliding sleeve and seals the hole, and the other end of the inner sliding sleeve is provided with a signal transmission device;
and
in the intelligent opening device, the number of the intelligent opening devices corresponds to the number of the sliding sleeve assemblies one by one, and the intelligent opening devices are located in the inner sliding sleeve.
The multistage intelligent fracturing control system has the beneficial effects that: the intelligent opening device comprises the intelligent opening device, the first slip assembly is arranged in the intelligent opening device, one end of the linkage device main body is arranged, namely, a first slip in the first slip assembly can be unfolded firstly, and as long as the first slip is unfolded, the first slip is subjected to radial thrust, and the second slip is unfolded and extends out of the surface of the linkage device main body through the driving of the first slip. After the first slip in the first slip assembly is deployed, even if not fully deployed, as long as it is partially deployed, the first slip drives the second slip to deploy and extend out of the surface of the linkage body when the first slip moves to the limit position of the sleeve. That is to say, the effective opening of the second slip is ensured by the aid of the thrust of the first slip, and the problem of failure in unfolding of the slips is avoided.
Drawings
FIG. 1 is an orientation view of a first slip linkage embodiment of the present disclosure;
FIG. 2 is a sectional view in one direction of FIG. 1;
fig. 3 is a sectional view in one direction of a first embodiment of an intelligent opening device according to the present invention;
fig. 4 is a sectional view in one direction of a first state of the intelligent opening device according to the embodiment of the present invention;
FIG. 5 is a cross-sectional view in one direction of a second state of an embodiment of the intelligent opening device of the invention;
FIG. 6 is a cross-sectional view in one direction of a first state of an embodiment of a multi-stage intelligent fracturing control system;
fig. 7 is a cross-sectional view in one direction of a second state of an embodiment of a multi-stage intelligent fracturing control system.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the linkage device comprises a linkage device body, 11, a first slip groove, 12, a second slip groove, 21, a center rod, 22, an extensible elastic component, 23, a driving starting device, 24, a limiting table, 25, a stop block, 3, a first slip, 4, a second slip, 5, an opening device rear section, 6, an opening device front section, 61, a driving control device, 7, a sliding sleeve assembly, 71, an outer sliding sleeve, 72, an inner sliding sleeve, 73, an eyelet, 74, a limiting boss, 75, a signal transmission device, 8 and a shaft.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Fig. 1 to 2 are schematic structural views of a first slip linkage for an intelligent opening device according to an embodiment of the present invention.
A slip linkage for an intelligent opening device, comprising:
the slip-type well drilling device comprises a first slip component and a second slip component which are arranged on a linkage device main body 1, wherein one end of the linkage device main body 1 is the front end in the well descending direction, and the first slip component is arranged at one end of the linkage device main body 1.
The first slip assembly includes a slip driving part and a first slip 3, the slip driving part drives the first slip 3 to be unfolded and to be maintained in an unfolded state, and the first slip 3 extends out of the surface of the linkage body 1.
The second slip assembly comprises a second slip 4, the first slip 3 drives the second slip 4 to expand and keep the expanded state, and the second slip 4 extends out of the surface of the linkage body 1.
In this embodiment, one end of the linkage body 1 is provided with a first slip groove 11 for accommodating the first slip 3, and the first slip 3 is rotatably connected with the linkage body 1 in the axial direction thereof by a pin, that is, when the first slip 3 is rotated by the pin, the first slip 3 partially extends out of the surface of the linkage body 1. Wherein, the other end of the linkage device main body 1 is provided with a second slip groove 12 for accommodating a second slip 4; the first and second slip grooves 11, 12 are in communication, i.e. the first slips 3 in the first slip groove 11 directly abut the second slips 4 in the second slip groove 12.
The slip driving component comprises a central rod 21 and an extensible elastic component 22;
one end of the tensile elastic member 22 is connected to the other end of the linkage body 1, and the other end of the tensile elastic member 22 is connected to one end of the center rod 21;
the central rod is arranged in the linkage device main body in a sliding mode, the other end of the central rod 21 is connected with one end of the linkage device main body 1 through a driving starting device 23, the tensile elastic component 22 drives the central rod 21 to move towards the other end of the linkage device main body 1 and drives the first slip 3 to be unfolded and keep the unfolded state, and the first slip 3 extends out of the surface of the linkage device main body 1.
The center rod 21 has a retention table 24 at the end remote from the tensile resilient member 22 to maintain the first slip 3 in the extended condition. The other end of the linkage device main body 1 is connected with an opening for the central rod 21 to pass through, a stop block 25 is arranged at the opening, and the stop block 25 is connected with one end of the tensile elastic component 22. In the present embodiment, the drive starting means 23 includes a fusing device and a wire for connecting the fusing device to the other end of the center rod 21 and connecting the fusing device to one end of the linkage body 1.
The working principle and the beneficial effects of the embodiment are as follows: the first slip assembly is arranged at one end of the linkage device main body 1, namely, the first slip 3 in the first slip assembly can be unfolded firstly, so long as the first slip 3 is unfolded, the first slip is subjected to the axial thrust of the linkage device main body 1, and the second slip 4 is driven to be unfolded through the first slip 3 and extends out of the surface of the linkage device main body 1. After the first slip 3 in the first slip assembly is deployed, even if not fully deployed, as long as it is partially deployed, when the first slip 3 moves to the limit position of the sliding sleeve, the first slip 3 drives the second slip 4 to be deployed and extend out of the surface of the linkage body 1. That is to say, the effective opening of the second slip 4 is ensured by the thrust of the first slip 3, and the problem of failure of the unfolding of the slips is avoided.
Simultaneously, owing to adopt two slips structure, when first slips became invalid, the second slips can also carry out the propulsive effect of sliding sleeve, has improved intelligent opening device's reliability.
In this embodiment, by providing the center rod 21 and the stretchable elastic member 22, after the driving start device 23 is started, the other end of the center rod 21 is separated from the linkage device body 1, the stretchable elastic member 22 drives the center rod 21 to move towards the other end of the linkage device body 1 and drives the first slip 3 to be unfolded and keep the unfolded state, and the first slip 3 extends out of the surface of the linkage device body 1, thereby ensuring smooth opening of the first slip 3. In this embodiment, the stretch resilient member 22 is a spring, and in particular embodiments, other members having stretch resilience, such as high temperature resistant rubber bands, may be used.
Through setting up the spacing platform 24 that prevents that the slips from retracting, after drive starting drive 23 starts, first slips 3 is in the state of expanding, avoids the slips to retract, has improved slips aggregate unit's reliability. The opening through which the central rod 21 passes facilitates the installation of the central rod 21.
In this embodiment, the bottom surface of the second slip groove 12 is an inclined surface extending in the direction of the other end of the linkage body 1 and gradually away from the axis thereof, and the second slip 4 is slidably disposed on the bottom surface.
Through the contact of the second slip 4 and the inclined plane, when the second slip 4 is pushed and extruded by the first slip 3 towards the direction of the other end of the linkage device main body 1, the second slip 4 extends out of the surface of the linkage device main body 1, and meanwhile, the second slip 4 which is unfolded is prevented from retracting.
In this embodiment, the compressive strength of the first slip 3 is less than the compressive strength of the second slip 4. The first slip 3 and the second slip 4 are uniformly distributed in the circumferential direction of the linkage body 1.
Through setting up above-mentioned structure, that is to say that the intensity of the first slips 3 of preceding slips is lower, its effect that is mainly transmission and drive, and the compressive strength of second slips 4 is higher, can play the effect of pressure-bearing. Through the equipartition setting, ensure the equilibrium of each slips atress, improve aggregate unit's reliability.
In this embodiment, the number of the first slips 3 is equal to the number of the second slips 4, and the second slips 4 are driven to be spread by abutting and pressing the first slips 3 and the second slips 4. In a particular embodiment, the first slip 3 may drive the second slip 4 to extend in a manner driven by a drive rod.
The specific working process of the slip linkage embodiment is shown in fig. 3 to 5, that is, after the start device 23 is started, that is, the fusing device in this embodiment is disconnected, the spring of the tensile elastic member 22 drives the center rod 21 to move toward the other end of the linkage body 1, and the limit table 24 abuts against the lower end of the first slip 3 and drives the first slip 3 to rotate through the pin, so that the first slip 3 partially extends out of the surface of the linkage body 1. When the first slip 3 is abutted to the inner wall of one end of the inner sliding sleeve 72 and is pushed by the sliding sleeve assembly, when the pushing force applied to the first slip 3 is larger than the bearing capacity of the pin, the pin is broken, the first slip 3 pushes the second slip 4 to move towards the left side of the figure in the second slip groove 12, so that the second slip 4 extends out of the surface of the linkage device main body 1, when the slip linkage device continues to move towards the underground, the second slip 4 continues to extend out of the surface of the linkage device main body 1, when the slip linkage device continues to move towards the underground due to the pumping force, when the pushing force applied to the first slip 3 is larger than the breakdown strength, the first slip 3 is broken and defeated, so that the inner wall of one end of the second slip 4 and the inner sliding sleeve 72 is abutted to the limiting boss 74, and when the pumping force applied to the linkage device is larger than the adhesive force of the inner sliding sleeve 72 and the outer sliding sleeve 71, the inner sliding sleeve 72 slides, and the perforations 73 are made to pass through the inside and outside of the wellbore.
The invention also provides an embodiment, a structure of an embodiment of the novel intelligent opening device is shown in fig. 3 to 5, and the novel intelligent opening device is an intelligent opening device; the method comprises the following steps:
the opening device rear section 5, the opening device front section 6 and the slip linkage device for the intelligent opening device.
The rear section 5 of the opening device is connected with the other end of the linkage device main body 1, and the front section 6 of the opening device is connected with one end of the linkage device main body 1.
The opening device front section 6 is internally provided with a driving control device 61 for starting the slip driving part, and the driving control device 61 is connected with the slip driving part.
The working principle and the beneficial effects of the embodiment are as follows: the first slip assembly is arranged at one end of the linkage device main body 1, namely, the first slip 3 in the first slip assembly can be unfolded firstly, so long as the first slip 3 is unfolded, the first slip is subjected to the axial thrust of the linkage device main body 1, and the second slip 4 is driven to be unfolded through the first slip 3 and extends out of the surface of the linkage device main body 1. After the first slip 3 in the first slip assembly is deployed, even if not fully deployed, as long as it is partially deployed, when the first slip 3 moves to the limit position of the sliding sleeve, the first slip 3 drives the second slip 4 to be deployed and extend out of the surface of the linkage body 1. That is to say, the effective opening of the second slip 4 is ensured by the thrust of the first slip 3, and the problem of failure of the unfolding of the slips is avoided.
The specific working process of the embodiment is as follows: when the intelligent opening device is moving, after the driving control device 61 obtains a signal for opening the intelligent opening device, the driving control device drives the starting device 23 to start, that is, the fusing device in this embodiment is disconnected, the spring of the tensile elastic component 22 drives the central rod 21 to move towards the other end of the linkage device main body 1, the limiting table 24 abuts against the lower end of the first slip 3 and drives the first slip 3 to rotate through the pin, so that the first slip 3 partially extends out of the surface of the linkage device main body 1. When the first slip 3 is abutted to the inner wall of one end of the inner sliding sleeve 72 and is pushed by the sliding sleeve assembly, when the pushing force applied to the first slip 3 is larger than the bearing capacity of the pin, the pin is broken, the first slip 3 pushes the second slip 4 to move towards the left side of the figure in the second slip groove 12, so that the second slip 4 extends out of the surface of the linkage device main body 1, when the slip linkage device continues to move towards the underground, the second slip 4 continues to extend out of the surface of the linkage device main body 1, when the slip linkage device continues to move towards the underground due to the pumping force, when the pushing force applied to the first slip 3 is larger than the breakdown strength, the first slip 3 is broken and defeated, so that the inner wall of one end of the second slip 4 and the inner sliding sleeve 72 is abutted to the limiting boss 74, and when the pumping force applied to the linkage device is larger than the adhesive force of the inner sliding sleeve 72 and the outer sliding sleeve 71, the inner sliding sleeve 72 slides, and the perforations 73 are made to pass through the inside and outside of the wellbore.
In this embodiment, the rear section 5 of the opening device mainly plays a role in pumping the intelligent opening device, and the front section 6 of the opening device mainly plays a role in damping and centralizing the intelligent opening device in the process of going down the well.
The invention also provides an embodiment of a multistage intelligent fracturing control system, and particularly refers to fig. 6 to 7.
A multi-stage intelligent fracturing control system comprising:
a plurality of interconnected sliding sleeve assemblies 7, each sliding sleeve assembly comprises an outer sliding sleeve 71 and an inner sliding sleeve 72, and the outer sliding sleeve 71 is circumferentially provided with holes 73 which penetrate through the outer sliding sleeve 71 in the radial direction; the inner wall of one end of the inner sliding sleeve 72 is provided with a limit boss 74, the inner sliding sleeve 72 is fixedly sleeved on the inner wall of the outer sliding sleeve 71 and seals the hole 73, and the other end of the inner sliding sleeve 72 is provided with a signal transmission device 75.
In the above intelligent opening devices, the number of the intelligent opening devices corresponds to the number of the sliding sleeve assemblies 7 one by one, and the intelligent opening devices are located in the inner sliding sleeve 72.
The beneficial effects of the multistage fracturing intelligent control system of this embodiment: including above-mentioned intelligent opening device among multistage fracturing intelligent control system, because among the intelligent opening device, first slips subassembly through setting up the one end in aggregate unit main part 1, also be first slips 3 in the first slips subassembly and can expand earlier, as long as first slips 3 expandes the back, receives radial ascending thrust at first slips, through the surface that first slips 3 drive second slips 4 expandes and stretch out aggregate unit main part 1. After the first slip 3 in the first slip assembly is deployed, even if not fully deployed, as long as it is partially deployed, when the first slip 3 moves to the limit position of the sliding sleeve, the first slip 3 drives the second slip 4 to be deployed and extend out of the surface of the linkage body 1. That is to say, the effective opening of the second slip 4 is ensured by the thrust of the first slip 3, and the problem of failure of the unfolding of the slips is avoided.
The working process of the multistage intelligent fracturing control system of the embodiment is, as shown in fig. 6, placing an intelligent opening device in a shaft 8, wherein the front section 6 of the opening device is located in the front of the downhole direction, the rear section 5 of the opening device is located behind the downhole direction, the main function of the rear section 5 of the opening device is to pump the intelligent opening device to a preset position in the downhole, and a driving control device 61 is arranged in the front section 6 of the opening device.
When the intelligent opening device is pumped to a preset position, as shown in fig. 6, after the driving control device 61 detects a driving control signal sent by the signal transmission device 75, the driving control device 61 sends a driving start signal to drive the start device 23, the other end of the center rod 21 is separated from the linkage device main body 1, the tensile elastic component 22 drives the center rod 21 to move towards the other end of the linkage device main body 1 and drives the first slip 3 to be unfolded and keep an unfolded state, and the first slip 3 extends out of the surface of the linkage device main body 1, so that the first slip 3 is ensured to be opened smoothly.
At this moment, intelligent opening device continues to move forward in the pit, as shown in fig. 6, when first slips 3 had spacing boss 74 butt with the one end inner wall of inner sliding sleeve 72 to receive the thrust of sliding sleeve subassembly, after the thrust that first slips 3 received was greater than the pin bearing capacity, the pin fracture.
The smart opener continues to move downhole, due to the pumping force, as shown in fig. 7, the first slip 3 pushes the second slip 4 to move downward in the two slip bowl 12 as shown, since the first slip 3 abuts the second slip 4, the second slip 4 is extended out of the surface of the linkage body 1, as the slip linkage continues to move downhole, the second slips 4 continue to extend beyond the surface of the linkage body 1, when the slip linkage device is subjected to pumping force to move forwards and downwards continuously, and the thrust force applied to the first slip 3 is greater than the collapse strength of the first slip, the first slip 3 breaks and collapses, so that the second slip 4 is abutted against the limit boss 74 arranged on the inner wall of one end of the inner sliding sleeve 72, when the pumping force applied to the linkage device is larger than the adhesive force between the inner sliding sleeve 72 and the outer sliding sleeve 71, the inner sliding sleeve 72 slides along with the linkage device and the outer sliding sleeve 71, so that the hole 73 is opened and is communicated with the inside and the outside of the shaft.
In this embodiment, for convenience of description, the multistage intelligent fracturing control system only displays one sliding sleeve assembly 7 and one intelligent opening device in the figure, and in practical application, a plurality of sliding sleeve assemblies 7 and intelligent opening devices corresponding to each other may be provided. Meanwhile, for the driving control device 61 and the signal transmission device 75, technologies such as a hall sensor and an RF id electronic tag may be selected for implementation, and details are not described here.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A slip linkage for an intelligent opening device, comprising:
the slip-type hydraulic well drilling device comprises a linkage device main body (1), a first slip component and a second slip component, wherein the first slip component and the second slip component are arranged on the linkage device main body (1), one end of the linkage device main body (1) is the front end in the well descending direction, and the first slip component is arranged at one end of the linkage device main body (1);
the first slip assembly comprises a slip driving component and a first slip (3), the slip driving component drives the first slip (3) to be unfolded and keeps the unfolded state, and the first slip (3) extends out of the surface of the linkage device main body (1);
the second slip assembly comprises a second slip (4), the first slip (3) drives the second slip (4) to be unfolded and to be kept in an unfolded state, and the second slip (4) extends out of the surface of the linkage device main body (1).
2. The slip linkage for a smart opening device according to claim 1, wherein the slip driving member comprises a center rod (21) and an extensible resilient member (22);
one end of the tensile elastic component (22) is connected with the other end of the linkage device main body (1), and the other end of the tensile elastic component (22) is connected with one end of the central rod (21);
the central rod (21) is arranged in the linkage device main body (1) in a sliding mode, the other end of the central rod (21) is connected with one end of the linkage device main body (1) through a driving starting device (23), the tensile elastic component (22) drives the central rod (21) to move towards the other end of the linkage device main body (1) and drives the first slip (3) to be unfolded and keep an unfolded state, and the first slip (3) extends out of the surface of the linkage device main body (1).
3. The slip linkage for an intelligent opening device according to claim 2,
the end of the central rod (21) far away from the stretching elastic component (22) is provided with a limiting table (24) for keeping the first slip (3) in an unfolding state.
4. The slip linkage for an intelligent opening device according to claim 3, wherein an opening for the central rod (21) to pass through is connected to the other end of the linkage body (1), a stopper (25) is arranged at the opening, and the stopper (25) is connected with one end of the tensile elastic member (22).
5. The slip linkage for a smart opening device according to claim 1, wherein the other end of the linkage body (1) is provided with a second slip groove (12) for accommodating the second slip (4), a bottom surface of the second slip groove (12) is an inclined surface extending in a direction of the other end of the linkage body (1) gradually away from an axis thereof, and the second slip (4) is slidably disposed on the bottom surface.
6. The slip linkage for a smart opening device according to any of claims 1 to 5, wherein the compressive strength of the first slip (3) is less than the compressive strength of the second slip (4).
7. A slip linkage for a smart opening device according to any of claims 1 to 5, wherein the first slip (3) and the second slip (4) are evenly distributed over the circumference of the linkage body (1).
8. Slip linkage for intelligent opening devices according to claim 7, characterized in that the number of first slips (3) is identical to the number of second slips (4).
9. An intelligent opening device, comprising:
an opening device rear section (5), an opening device front section (6) and the slip linkage for an intelligent opening device of any one of claims 1 to 8;
the opening device rear section (5) is connected with the other end of the linkage device main body (1), and the opening device front section (6) is connected with one end of the linkage device main body (1);
and a driving control device (61) for starting the slip driving part is arranged in the front section (6) of the opening device, and the driving control device (61) is connected with the slip driving part.
10. A multi-stage intelligent fracturing control system, comprising:
the sliding sleeve assembly comprises an outer sliding sleeve (71) and an inner sliding sleeve (72), and eyelets (73) penetrating through the outer sliding sleeve (71) in the radial direction are arranged on the outer sliding sleeve (71) in the circumferential direction; a limiting boss (74) is arranged on the inner wall of one end of the inner sliding sleeve (72), the inner sliding sleeve (72) is fixedly sleeved on the inner wall of the outer sliding sleeve (71) and seals the eyelet (73), and a signal transmission device (75) is arranged at the other end of the inner sliding sleeve (72);
and
the intelligent opening device of claim 9, the number of said intelligent opening devices corresponding one-to-one to the number of said sliding sleeve assemblies (7), said intelligent opening device being located within said inner sliding sleeve (72).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110125361.9A CN112761579B (en) | 2021-01-29 | 2021-01-29 | Slip linkage device for intelligent opening device, intelligent opening device and multistage fracturing intelligent control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110125361.9A CN112761579B (en) | 2021-01-29 | 2021-01-29 | Slip linkage device for intelligent opening device, intelligent opening device and multistage fracturing intelligent control system |
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| CN112761579B (en) | 2024-05-10 |
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