CN114876408B - Chute counting type infinite-level full-drift-diameter well completion fracturing device - Google Patents
Chute counting type infinite-level full-drift-diameter well completion fracturing device Download PDFInfo
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- CN114876408B CN114876408B CN202210645378.1A CN202210645378A CN114876408B CN 114876408 B CN114876408 B CN 114876408B CN 202210645378 A CN202210645378 A CN 202210645378A CN 114876408 B CN114876408 B CN 114876408B
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- 239000004576 sand Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
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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
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
- E21B34/142—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools unsupported or free-falling elements, e.g. balls, plugs, darts or pistons
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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
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Abstract
The invention provides a chute counting type infinite-stage full-drift diameter completion fracturing device which comprises a fracturing sliding sleeve and a soluble information ball, wherein the fracturing sliding sleeve comprises an upper joint, a lower joint, an outer sleeve, a fixed sleeve, an annular piston and a counting core barrel, the annular piston seals an outer sleeve and inner and outer fracturing holes on the upper joint, the counting core barrel is arranged in clearance fit with the inner wall of the outer sleeve, a variable-diameter limiting ball seat and a rotary counting moving mechanism are arranged on the counting core barrel, a limiting sleeve is arranged above the variable-diameter limiting ball seat corresponding to the periphery of the counting core barrel at the upper end of a limiting boss, the soluble information ball is matched with the variable-diameter limiting ball seat, and the rotary counting moving mechanism is limited by a stop boss arranged on the inner wall of the sleeve.
Description
Technical Field
The invention belongs to the technical field of oil gas development, and particularly relates to a chute counting type infinite-level full-drift-diameter well completion fracturing device.
Background
The multi-stage sectional reconstruction completion mode of the horizontal well is a main mode of increasing the yield of unconventional oil and gas reservoirs, and the speed and efficiency of the fracturing process for ultra-deep and ultra-long horizontal wells are very urgent. The current pumping bridge plug perforation combined staged fracturing technology and the multistage sliding sleeve packer staged fracturing technology are used as the main flow technology for horizontal multistage fracturing transformation, and powerful technical support is provided for increasing transformation effect of shale reservoirs and effectively utilizing the shale reservoirs in large scale.
The pumping bridge plug perforation combined staged fracturing technology utilizes coiled tubing, a crawler or oil pipe transmission to lower a perforating gun into a shaft to a designated position to perform first stage perforation. The perforating gun is started, and the optical sleeve fractures the first section. The perforating gun and the bridge plug are connected through a cable, the fracturing truck is used for pumping in place, the bridge plug is electrically ignited to seat, the cable is lifted to the perforating position for perforation, the cable and the perforating gun are lifted out, and the second section is fractured. And repeating the setting, perforating and fracturing processes of the lower bridge plug of the second section, and sequentially completing the fracturing of each subsequent section. And after the fracturing of each section is finished, drilling a bridge plug by using a continuous oil pipe or draining and producing after the bridge plug is autolyzed. The pumping bridge plug perforation combined staged fracturing technology has the advantages that the number of fracturing stages is unlimited, large-scale sand fracturing can be carried out, the fracturing layer is accurate, and the like, and the technology has the advantages that the construction time is long, the ground cross operation is complex, the tool is broken when meeting a blocking card Shi Yifa, the tool falls into a well, the fracturing cannot be smoothly carried out, the fracturing construction efficiency is greatly influenced, and the construction cost of single-well pumping bridge plug construction, perforation and continuous oil pipe drilling plug construction is extremely high.
The multistage sliding sleeve packer staged fracturing technology is characterized in that a sliding sleeve tool is put into the well along with a sleeve during well cementation, each stage corresponds to one sliding sleeve tool, a ball seat is arranged in the sliding sleeve tool, a steel ball or a composite ball seat corresponding to the ball seat in size is put into a well mouth to seal the sliding sleeve, and then the sliding sleeve is opened to carry out fracturing construction of each stage, so that layered fracturing transformation of an oil and gas layer is realized. Stage-by-stage ball-throwing sliding sleeve staged fracturing is limited in stage number due to the existence of stage difference, namely the drift diameter of a sliding sleeve tool is smaller downwards, so that multistage fracturing transformation of an oil-gas layer cannot be carried out, the requirement of ultra-deep and ultra-long horizontal section well on multistage fracturing transformation of the oil-gas layer cannot be well met, and the small drift diameter can also influence fracturing displacement, subsequent lower detection tool, well repairing operation and the like. In the construction process, the change of displacement, liquid viscosity and sand ratio can cause the change of the along-the-way friction and the liquid column weight, so that the surface pressure fluctuation is larger, accurate pressure data are difficult to obtain, accurate data reference cannot be provided for the subsequent scheme formulation and construction, and the blindness of testing and the error and rework of the operation judgment of a test switching well are increased.
Disclosure of Invention
The invention aims to solve the technical problem of providing a chute counting type infinite-stage full-drift diameter completion fracturing device which aims at the defects of the prior art, has uniform upper and lower drift diameters and can meet the requirement of ultra-deep and ultra-long horizontal section wells on multistage fracturing reformation of hydrocarbon reservoirs.
The invention adopts the technical proposal for solving the problems that: the utility model provides a full latus rectum completion fracturing device of infinitely variable class of spout count, includes fracturing sliding sleeve and soluble information ball, the fracturing sliding sleeve includes upper joint, lower clutch, outer sleeve, fixed sleeve and annular piston, the upper and lower both ends of outer sleeve respectively with upper and lower clutch are connected, fixed sleeve install in the outer sleeve and cup joint with upper joint extension bottom, outer sleeve and upper joint extension and fixed sleeve form annular fracturing cavity, annular piston locates in the annular fracturing cavity to connect the location through shearing pin and upper joint extension side direction, separate annular fracturing cavity into upper cavity and lower cavity, annular piston seals outer fracturing hole and the interior fracturing hole that outer sleeve and upper joint extension correspond the setting simultaneously, its characterized in that counting core section of thick bamboo bottom is installed through return spring and lower clutch, counting core section of thick bamboo top with leave the removal interval between the upper joint extension bottom, be equipped with variable diameter spacing ball seat and rotatory counting movement mechanism on counting core section of thick bamboo, the outer sleeve inner wall corresponds the spacing ball seat of spacing ball of limit configuration in the corresponding position of upper end of an upper joint extension, but the annular piston seals the spacing ball of setting up.
According to the scheme, the stop bosses are arranged below the limit bosses on the inner wall of the outer sleeve at intervals, an expanding groove is formed between the limit bosses and the stop bosses, and the rotary counting moving mechanism is limited by the stop bosses.
According to the scheme, the variable-diameter limiting ball seat comprises a movable limiting block and an elastic retainer ring, a plurality of limiting block holes are formed in the counting core barrel at uniform intervals along the circumferential direction, the movable limiting block is arranged in the limiting block holes, and a groove is formed in the inner side of the movable limiting block and is embedded with the elastic retainer ring.
According to the scheme, the rotary counting moving mechanism comprises an annular track groove, a limiting pin sleeve, a limiting pin and a pressing sleeve, wherein the annular track groove, the limiting pin sleeve, the limiting pin and the pressing sleeve are arranged on the peripheral surface of the counting core barrel, the limiting pin sleeve is sleeved outside the counting core barrel and fixedly connected to the lower end of the stop boss, the upper end and the lower end of the pressing sleeve are respectively abutted against the limiting pin sleeve and the lower joint, the limiting pin is fixed through the limiting pin sleeve, and the end head of the pressing sleeve stretches out and is inserted into the annular track groove.
According to the scheme, the upper side and the lower side of the limiting boss are respectively provided with an upper conical surface and a lower conical surface, and the variable-diameter limiting ball seat slides along the upper conical surface and the lower conical surface to change diameter.
According to the scheme, the lower end of the limiting sleeve is a conical surface, the conical surface is matched with the upper conical surface of the limiting boss, and an annular inner step surface is arranged at the bottom of the inner wall of the limiting sleeve.
According to the scheme, the annular track groove consists of an upper zigzag groove and a lower zigzag groove with the number of teeth of N, the openings of the upper zigzag groove and the lower zigzag groove are opposite and are staggered for 360/2N degrees in the circumferential direction, a target long groove is arranged in the lower zigzag groove, the axial length of the target long groove is greater than the length of the rest grooves, and the limiting pin moves along the tooth shape directions of the upper zigzag groove and the lower zigzag groove for counting, and counts the rotation of the core barrel for one time for 360/N degrees.
According to the scheme, the number of the counting core barrels is M, M=N-1, the initial position of the limiting pin in each counting core barrel from top to bottom is the corresponding 1 st to N-1 st lower zigzag groove in sequence, and the target long groove is the Nth lower zigzag groove.
According to the scheme, the annular track grooves are one or more groups, the annular track grooves are distributed at intervals along the axial direction of the counting core barrel, two groups of upper and lower adjacent annular track grooves are sequentially staggered by 360/2N degrees in the circumferential direction, and the lower zigzag grooves of the upper group of annular track grooves are communicated with the upper zigzag grooves of the corresponding lower group of annular track grooves by arranging the jump layer straight grooves.
According to the scheme, a plurality of limiting bosses are additionally arranged on the inner wall of the outer sleeve between the limiting bosses and the stopping bosses along the axial direction at intervals, a plurality of diameter expanding grooves are formed, and the number of the limiting bosses and the number of the diameter expanding grooves are the same as the number of the groups of the annular track grooves.
According to the scheme, the target long groove is positioned in the annular track groove at the lowest layer, and the limit sleeve is arranged corresponding to the limit boss at the uppermost layer.
According to the scheme, the number of the counting core barrels is (N-1) multiplied by the number of the limiting bosses, the counting core barrels of each (N-1) section are a group, and the variable-diameter limiting ball seats on the counting core barrels correspond to the same limiting boss.
According to the scheme, the counting core barrels of the first group (N-1) of the sections from top to bottom correspond to the limiting boss of the lowest layer, and the counting core barrels of the last group (N-1) of the sections correspond to the limiting boss of the uppermost layer.
According to the scheme, the soluble information ball comprises a main body, an inner barrel, an end cover, an information acquisition component, a dissolution assisting component and a power supply, wherein the bottom of the main body is a spherical surface, a cavity is formed in the main body, a closed space is formed through the end cover, the inner barrel, the information acquisition component, the dissolution assisting component and the power supply are all arranged in the closed space, and the power supply supplies power for the dissolution assisting component and the information acquisition component.
According to the scheme, the information acquisition assembly comprises an information ball, a joint hoop sensor and a temperature pressure probe, wherein the information ball is a plastic ball with an information acquisition chip arranged inside, the joint hoop sensor is used for measuring the depth of the information ball going into the well, and the temperature pressure probe is fixed on the end cover and used for monitoring temperature and pressure values.
According to the scheme, the dissolution assisting component comprises a dissolution assisting bag and an electric push rod, the dissolution assisting bag is arranged in the inner cylinder, the electric push rod is fixed on the inner cylinder, and the tip end of the electric push rod penetrates through the inner cylinder and is correspondingly arranged with the dissolution assisting bag.
According to the scheme, the main body, the inner cylinder and the end cover are all made of soluble metal matrix composite materials.
According to the scheme, the elastic retainer ring is a circular ring which is made of elastic metal material and is provided with an inclined opening.
The beneficial effects of the invention are as follows: the chute counting type infinite-level full-drift diameter well completion fracturing device is characterized in that when an information ball passes through a variable-diameter limiting ball seat, the variable-diameter limiting seat can move along with a rotary counting mechanism to change diameter, fracturing of a corresponding target layer is achieved, and the number of layers of fracturing reconstruction is truly infinite through the arrangement of annular track grooves of the rotary counting mechanism; the sliding sleeve structure with full diameter makes the sliding sleeve structure with different stages the same, reduces the difficulty of manufacture and well descending, meets the requirement of ultra-deep and ultra-long horizontal section well, integrates the variable diameter limiting mechanism and the sliding sleeve, protects the limiting profile and the variable diameter limiting mechanism in the closed cavity, and designs the limiting elastic retainer ring as a streamline profile, thereby maximally preventing the sliding sleeve from being opened and failed due to sand accumulation and fluid erosion and obtaining a larger full diameter; meanwhile, a soluble information ball containing an informatization chip is adopted, dynamic pressure values and temperatures in the fracturing process are collected, the fracturing measure effect is analyzed and estimated, and the most direct data reference is provided for the establishment of the subsequent fracturing process; after the fracturing construction is completed, the soluble ball information ball is dissolved, no other mechanical structure exists in the sliding sleeve, and the diameter and flow in the pipe cannot be influenced.
Drawings
Fig. 1 is an axial cross-sectional view of one embodiment of the present invention.
Fig. 2 is a schematic view of the structure of an outer sleeve according to an embodiment of the present invention.
FIG. 3 is a schematic diagram of a counting cartridge with a single annular track groove according to one embodiment of the present invention.
FIG. 4 is an expanded view of a single annular track groove in accordance with one embodiment of the present invention.
Fig. 5 is a schematic structural view of a movable stopper according to an embodiment of the present invention.
Fig. 6 is a view in the direction a of fig. 1.
Fig. 7 is a schematic structural view of a limiting sleeve according to an embodiment of the present invention.
Fig. 8 is a schematic diagram showing a structure in which a soluble information ball is stopped in an embodiment of the present invention.
Fig. 9 is a schematic view of the structure of a soluble information ball moving down through a counting cartridge according to one embodiment of the present invention.
Fig. 10 is a schematic diagram of an embodiment of the invention illustrating an upward displacement fracturing of a counting cartridge.
FIG. 11 is a schematic diagram of a counting cartridge with two sets of annular track grooves according to an embodiment of the present invention.
FIG. 12 is an expanded view of two sets of annular track grooves according to one embodiment of the present invention.
FIG. 13 is a schematic view of the outer sleeve configuration for two sets of annular track grooves according to one embodiment of the present invention.
Fig. 14 is an axial cross-sectional view of two sets of annular track grooves in accordance with one embodiment of the present invention.
Fig. 15 is a cross-sectional view of a soluble information ball according to one embodiment of the present invention.
Fig. 16 is a schematic structural view of a circlip according to one embodiment of the present invention.
Detailed Description
For a better understanding of the present invention, reference is made to the following description of the invention taken in conjunction with the accompanying drawings and examples.
As shown in fig. 1, a chute counting type infinite-stage full-drift well completion fracturing device comprises a fracturing sliding sleeve and a soluble information ball, the fracturing sliding sleeve comprises an upper joint 1, a lower joint 2, an outer sleeve 3, a fixed sleeve 4 and an annular piston 5, the upper end and the lower end of the outer sleeve are respectively connected with the upper joint and the lower joint, the fixed sleeve is arranged in the outer sleeve and sleeved with the bottom of an extension section of the upper joint, the outer sleeve, the extension section of the upper joint and the fixed sleeve form an annular fracturing cavity, the annular piston is arranged in the annular fracturing cavity and is laterally connected with the extension section of the upper joint through a shearing pin 6 to be positioned, the fracturing cavity is divided into an upper cavity 7 and a lower cavity 8, meanwhile, the annular piston seals an inner fracturing hole 9 and an outer fracturing hole which are correspondingly arranged on the extension section of the upper joint, a counting core barrel 11 is arranged in clearance fit inside the outer sleeve, the bottom of the counting core barrel is in butt joint through a return spring 12, a moving distance is reserved between the top of the counting core barrel and the bottom of the extension section of the upper joint, a variable-drift limit ball seat and a rotary counting moving mechanism are arranged on the counting core barrel, a limit boss 13 is arranged on the inner wall of the outer sleeve corresponding to the counting core barrel, a limit boss 14 is arranged below the limit boss and a limit boss is arranged on the limit boss and is arranged on the limit boss 16 corresponding to the rotary limit boss and is arranged on the limit boss 16.
As shown in fig. 2 and 7, the upper and lower sides of the limiting boss are respectively provided with an upper conical surface 17 and a lower conical surface 18, and the variable-diameter limiting ball seat slides along the upper and lower conical surfaces to change diameters.
The lower end of the limiting sleeve is a conical surface 19 which is matched with the upper conical surface of the limiting boss, an annular inner step surface 20 is arranged at the bottom of the inner wall of the limiting sleeve, and the counting core barrel is limited to continue to act after the counting times are reached.
As shown in fig. 5 and 6, the diameter-variable limiting ball seat comprises a movable limiting block 21 and an elastic retainer ring 22, a plurality of limiting block holes are uniformly arranged in the counting core barrel at intervals along the circumferential direction, the movable limiting block is arranged in the limiting block holes, a groove 23 is formed in the inner side of the movable limiting block and is embedded with the elastic retainer ring, and the elastic retainer ring is a circular ring (see fig. 16) made of elastic metal material and provided with an inclined opening.
As shown in fig. 3 and 4, the rotary counting moving mechanism comprises an annular track groove 24, a limiting pin sleeve 25, a limiting pin 26 and a pressing sleeve 27 which are arranged on the peripheral surface of the counting core barrel, wherein the limiting pin sleeve is sleeved outside the counting core barrel and fixedly connected to the lower end of the stop boss, the upper end and the lower end of the pressing sleeve are respectively abutted against the limiting pin sleeve and the lower joint, the limiting pin is fixed through the limiting pin sleeve, and the end head extends out and is inserted into the annular track groove.
The annular track groove is composed of an upper zigzag groove 28 and a lower zigzag groove 29 with the number of teeth being N, the openings of the upper zigzag groove and the lower zigzag groove are opposite and are staggered for 360/2N degrees in the circumferential direction, a target long groove 30 is arranged in the lower zigzag groove, the axial length of the target long groove is greater than the length of the rest grooves, the limiting pin moves along the tooth shape direction of the upper zigzag groove and the lower zigzag groove for counting, and the counting core barrel rotates for 360/N degrees once.
The number of the counting core barrels is M, M=N-1, the starting positions of the limiting pins in each counting core barrel from top to bottom are the corresponding 1 st to N-1 th lower zigzag grooves, and the target long groove is the Nth lower zigzag groove.
According to the actual layer number, the number of circumferences or the number of radial turns of the annular track grooves is increased, the full drift diameter of the counting sliding sleeve (the minimum drift diameter is the inner diameter of the counting core barrel) is counted, the oil and gas layer is subjected to multistage transformation, and the number of layers of fracturing transformation of the oil and gas layer reaches infinite theoretically.
As shown in fig. 11 and 12, multiple groups of annular track grooves can be arranged, the annular track grooves are distributed at intervals along the axial direction of the counting core, two groups of upper and lower adjacent annular track grooves are sequentially staggered for 360/2N degrees in the circumferential direction, the lower zigzag grooves of the upper group of annular track grooves are communicated with the upper zigzag grooves of the corresponding lower group of annular track grooves by arranging the jump layer straight grooves 31, after the counting of the first group of annular track grooves is completed, the limiting pins move downwards to the second group of annular track grooves by the jump layer straight grooves, the counting principle is the same as that of the upper group of annular track grooves, and the operation end point of the limiting pins is the target long groove of the last group of annular track grooves.
As shown in fig. 13 and 14, in the case of multiple groups of annular track grooves, multiple limiting bosses 32 are additionally arranged on the inner wall of the outer sleeve between the limiting boss and the stop boss along the axial direction at intervals, and multiple diameter expanding grooves 33 are formed, wherein the number of the limiting bosses and the number of the diameter expanding grooves are the same as the number of the groups of annular track grooves. The number of the counting core barrels is (N-1) multiplied by the number of limit bosses, each counting core barrel of each (N-1) section is a group, and the variable diameter limit ball seats on the counting core barrels correspond to the same limit boss.
The counting core barrel of the first group (N-1) from top to bottom corresponds to the limiting boss of the lowest layer, the counting core barrel of the last group (N-1) corresponds to the limiting boss of the highest layer, the limiting pin runs out of the group of annular track grooves, the counting core barrel moves upwards by a certain distance, and the variable-diameter limiting ball seat is abutted with the limiting boss of the upper layer along with the upward movement of the counting core barrel until the variable-diameter limiting ball seat reaches the limiting boss of the highest layer.
As shown in fig. 15, the soluble information ball includes a main body 35, an inner cylinder 36, an end cover 37, an information collecting component, a dissolution assisting component and a power supply 38, wherein the main body is internally provided with a cavity, the bottom is provided with a spherical surface or a conical surface and other molded surfaces which can be matched with the circlip, the main body forms a closed space through the end cover, the inner cylinder, the information collecting component, the dissolution assisting component and the power supply are all arranged in the closed space, and the power supply supplies power for the dissolution assisting component and the information collecting component. The main body, the inner cylinder and the end cover are all made of soluble metal matrix composite materials.
The information acquisition assembly comprises an information ball 39, a joint hoop sensor 40 and a temperature pressure probe 41, wherein the information ball is a plastic ball with an information acquisition chip arranged inside, the joint hoop sensor is used for measuring the depth of the information ball going into the well, and the temperature pressure probe is fixed on an end cover and used for monitoring temperature and pressure values.
The cosolvent assembly comprises a cosolvent bag 42 and an electric push rod 43, wherein the cosolvent bag is arranged in the inner cylinder, the electric push rod is fixed on the inner cylinder, and the tip end of the electric push rod penetrates through the inner cylinder and is correspondingly arranged with the cosolvent bag. When the temperature and pressure monitoring and collection are finished, the electric push rod punctures the cosolvent bag, so that the soluble information balls are accelerated and completely dissolved, and the corrosion-resistant plastic information balls are returned to the wellhead.
The working flow of the device is as follows:
1. counting: when a group of annular track grooves are formed in the counting core barrel, the variable-diameter limiting ball seat stays at the limiting boss on the inner wall of the outer sleeve, the movable limiting block is retracted at the moment, the elastic retainer abuts against the soluble information ball to generate up-down pressure difference (see figure 8), the counting core barrel is continuously pressurized to force the counting core barrel to compress the return spring to move downwards, the limiting pin reaches the upper zigzag groove from the starting point, the counting core barrel rotates for 360/2N degrees, the variable-diameter limiting ball seat also moves downwards into the expanding groove of the outer sleeve at the same time, the elastic retainer expands to push the movable limiting block to move outwards along the limiting block hole, the soluble information ball continuously moves downwards through the counting core barrel (see figure 9), the upper pressure and the lower pressure of the counting core barrel are balanced, the counting core barrel moves upwards under the action of the return spring, the limiting pin moves to the lower zigzag groove, the counting core barrel rotates for 360/2N degrees at the same time, one counting is completed, the movable limiting block is retracted to stay at the limiting boss, and the next soluble information ball is waited to be received;
when two groups of annular track grooves are formed in the counting core barrel, the limiting pin is located in the initial groove of the upper group of annular track grooves, the return spring enables the variable-diameter limiting ball seat to stay at the lower limiting boss of the inner wall of the outer sleeve, the movable limiting block contracts inwards, the elastic retainer abuts against the soluble information ball to generate up-down pressure difference, the counting core barrel is continuously pressurized to compress the return spring to move downwards, the limiting pin reaches the upper group of upper zigzag grooves from the initial point, the counting core barrel rotates 360/2N degrees, the variable-diameter limiting ball seat also moves downwards into the lower layer of expanding grooves of the outer sleeve at the same time, the inner diameter of the movable limiting block increases, the soluble information ball accordingly continuously moves downwards through the counting core barrel, after that, the counting core barrel is balanced in pressure, the counting core barrel moves upwards under the action of the return spring, the limiting pin moves to the lower zigzag grooves, the counting core barrel rotates 360/2N degrees simultaneously, one time counting is completed, the movable shrinkage diameter returns to the lower limiting boss to stay, and waits for receiving the next soluble information ball until the limiting pin moves away from the upper group of annular track grooves, the inner diameter of the counting core barrel enters the lower group of annular track grooves through the layer straight grooves, and the movable ball seat reaches the lower limiting boss after the counting core barrel moves downwards.
2. Fracturing: when the well head bowling reaches the opening number of the counting core barrel, the limiting pin enters the target long groove of the annular track groove, the counting core barrel continues to move upwards under the action of the return spring until the upper end face of the counting core barrel coincides with the lower end face of the fixed sleeve, at the moment, the movable limiting block moves to the annular inner step face of the limiting sleeve, when the soluble information ball falls on the variable-diameter limiting ball seat, the movable limiting block is extruded to expand the diameter to be attached to the annular inner step face of the limiting sleeve, but the inner diameter of the elastic retainer is still smaller than the diameter of the soluble information ball, and the variable-diameter limiting ball seat drives the limiting sleeve to move downwards together under the action of pressure until the conical surface of the limiting sleeve is attached to the upper conical surface of the limiting boss. Because the lower cavity is a sealing cavity, the pressure enters the upper cavity of the annular piston from the internal fracturing hole of the upper joint, the annular piston is pushed downwards to coincide with the fixed sleeve, at the moment, the internal fracturing hole and the external fracturing hole are communicated, when the required pressure of the fracturing layer is reached, the layer is fractured, and oil gas enters the production tubular column through the fracturing hole. The soluble information ball is completely dissolved in a certain dissolution period, the information ball with the information stored therein is returned to the wellhead, the chip is used for storing the acquired data, the internal data can be read after capturing, and the fracturing measure effect is analyzed and evaluated.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (15)
1. The utility model provides a spout count formula infinite grade full latus rectum completion fracturing device, includes fracturing sliding sleeve and soluble information ball, the fracturing sliding sleeve includes upper joint, lower clutch, outer sleeve, fixed sleeve and annular piston, the upper and lower both ends of outer sleeve respectively with upper and lower clutch are connected, fixed sleeve installs in the outer sleeve and cup joints with upper joint extension bottom, outer sleeve and upper joint extension and fixed sleeve form annular fracturing cavity, annular piston locates in the annular fracturing cavity to through shearing pin and upper joint extension side direction connection location, separate annular fracturing cavity into upper cavity and lower cavity, annular piston seals outer fracturing hole and the interior fracturing hole that outer sleeve and upper joint extension correspond the setting simultaneously, the counting device is characterized in that a counting core barrel is arranged in the outer sleeve in a clearance fit manner, the bottom of the counting core barrel is abutted to a lower joint through a return spring, a moving distance is reserved between the top of the counting core barrel and the bottom of an extension section of the upper joint, a variable-diameter limiting ball seat and a rotary counting moving mechanism are arranged on the counting core barrel, a limiting boss is arranged on the inner wall of the outer sleeve corresponding to the counting core barrel, a limiting sleeve is arranged above the periphery of the counting core barrel at the upper end of the limiting boss corresponding to the variable-diameter limiting ball seat, the soluble information ball is configured with the variable-diameter limiting ball seat, a stop boss is arranged below the limiting boss at intervals, an expanding groove is formed between the limiting boss and the stop boss, and the rotary counting moving mechanism is limited through a stop boss stop;
the diameter-variable limiting ball seat comprises a movable limiting block and an elastic retainer ring, a plurality of limiting block holes are formed in the counting core barrel at equal intervals along the circumferential direction, the movable limiting block is arranged in the limiting block holes, and a groove is formed in the inner side of the movable limiting block and is embedded with the elastic retainer ring.
2. The chute counting infinite stage full-drift diameter completion fracturing device according to claim 1, wherein the rotary counting moving mechanism comprises an annular track groove, a limiting pin sleeve, a limiting pin and a pressing sleeve, wherein the annular track groove, the limiting pin sleeve, the limiting pin and the pressing sleeve are arranged on the outer peripheral surface of the counting core barrel, the limiting pin sleeve is sleeved on the counting core barrel and fixedly connected with the lower end of the stopping boss, the upper end and the lower end of the pressing sleeve are respectively abutted against the limiting pin sleeve and the lower joint, the limiting pin is fixed through the limiting pin sleeve, and the end head of the pressing sleeve extends out and is inserted into the annular track groove.
3. The chute counting infinite stage full-diameter completion fracturing device according to claim 2, wherein an upper conical surface and a lower conical surface are respectively arranged on the upper side and the lower side of the limiting boss, and the variable-diameter limiting ball seat slides along the upper conical surface and the lower conical surface to change diameters; the lower end of the limit sleeve is a conical surface which is matched with the upper conical surface of the limit boss, and an annular inner step surface is arranged at the bottom of the inner wall of the limit sleeve.
4. The chute counting infinite stage full-drift diameter completion fracturing device according to claim 3, wherein the annular track groove consists of an upper zigzag groove and a lower zigzag groove with the number of teeth being N, the openings of the upper zigzag groove and the lower zigzag groove are opposite and are staggered for 360/2N degrees in the circumferential direction, a target long groove is arranged in the lower zigzag groove, the axial length of the target long groove is greater than the length of the other grooves, the limiting pin moves along the tooth-shaped direction of the upper zigzag groove and the lower zigzag groove for counting, and the counting core barrel rotates for 360/N degrees once.
5. The chute counting infinite stage full-drift diameter completion fracturing device according to claim 4, wherein the number of the counting core barrels is N-1, the starting position of the limiting pin in each counting core barrel from top to bottom is a corresponding 1 st to N-1 st lower zigzag groove in sequence, and the target long groove is an Nth lower zigzag groove.
6. The chute counting infinite stage full-path completion fracturing device according to claim 4, wherein the number of the annular track grooves is one or more, the annular track grooves are distributed at intervals along the axial direction of the counting core, two groups of upper and lower adjacent annular track grooves are sequentially staggered by 360/2N degrees in the circumferential direction, and the lower zigzag grooves of the upper annular track grooves are communicated with the upper zigzag grooves of the corresponding lower annular track grooves by arranging jump straight grooves.
7. The chute counting infinite stage full-drift diameter completion fracturing device according to claim 6, wherein a plurality of limiting bosses are additionally arranged on the inner wall of the outer sleeve between the limiting bosses and the stopping bosses along the axial direction at intervals, a plurality of expanding grooves are formed, and the number of the limiting bosses and the expanding grooves is the same as the number of groups of the annular track grooves.
8. The chute counting infinite stage full-path completion and fracturing device according to claim 7, wherein said target elongated slot is positioned in said annular track groove of the lowest layer, and said limit sleeve is arranged corresponding to the limit boss of the uppermost layer.
9. The chute counting infinite stage full-diameter well completion fracturing device according to claim 8, wherein the number of the counting core barrels is (N-1) times the number of the limit bosses, each (N-1) counting core barrel is a group, and the variable diameter limit ball seats on the counting core barrels correspond to the same limit boss.
10. The chute counting infinite stage full path completion fracturing device according to claim 9, wherein said counting cartridges of a first group (N-1) of sections from top to bottom correspond to said limit bosses of a lowermost layer, and said counting cartridges of a last group (N-1) of sections correspond to limit bosses of an uppermost layer.
11. The chute counting infinite stage full-path completion fracturing device according to claim 5 or 10, wherein the soluble information ball comprises a main body, an inner barrel, an end cover, an information acquisition component, a dissolution assisting component and a power supply, wherein a cavity is formed in the main body, a closed space is formed through the end cover, the inner barrel, the information acquisition component, the dissolution assisting component and the power supply are all arranged in the closed space, and the power supply supplies power for the dissolution assisting component and the information acquisition component.
12. The chute counting infinite stage full-path completion and fracturing device according to claim 11, wherein the information acquisition assembly comprises an information ball, a joint hoop sensor and a temperature pressure probe, the information ball is a plastic ball with an information acquisition chip arranged inside, the joint hoop sensor measures the depth of the information ball in a well, and the temperature pressure probe is fixed on the end cover to monitor temperature and pressure values.
13. The chute counting infinite stage full-path completion and fracturing device according to claim 12, wherein the dissolution assisting assembly comprises a dissolution assisting bag and an electric push rod, the dissolution assisting bag is arranged in the inner barrel, the electric push rod is fixed on the inner barrel, and the tip penetrates through the inner barrel and is arranged corresponding to the dissolution assisting bag.
14. The chute counting infinite stage full path completion fracturing device according to claim 11 wherein said body, inner barrel and end cap are all made of soluble metal matrix composite material.
15. A chute counting infinite stage full path completion fracturing device according to claim 2 or 13 and wherein said circlip is a ring of resilient metal material provided with a beveled opening.
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| CN202210645378.1A CN114876408B (en) | 2022-06-08 | 2022-06-08 | Chute counting type infinite-level full-drift-diameter well completion fracturing device |
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| CN114922588B (en) * | 2022-06-08 | 2024-04-23 | 武汉友智服能源科技有限公司 | Sliding groove counting type full-drift-diameter sleeve sliding sleeve |
| CN117260232B (en) * | 2023-11-21 | 2024-02-06 | 济南弘群机械配件有限公司 | Automatic press for clutch roller set |
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