CN111272588A - Temporary plugging ball impact polishing testing device and testing method for fracturing of shale gas horizontal well - Google Patents
Temporary plugging ball impact polishing testing device and testing method for fracturing of shale gas horizontal well Download PDFInfo
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- CN111272588A CN111272588A CN201911034978.9A CN201911034978A CN111272588A CN 111272588 A CN111272588 A CN 111272588A CN 201911034978 A CN201911034978 A CN 201911034978A CN 111272588 A CN111272588 A CN 111272588A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0276—Spherical specimens
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
The invention discloses a temporary blocking ball impact polishing testing device for fracturing of a shale gas horizontal well, which comprises a circulating pump, a liquid tank, a sensor and an impact polishing testing part, wherein the impact polishing testing part comprises a ball throwing vertical pipe, a blocking ball backflow vertical pipe, an accelerated collision short section, a spiral polishing oil pipe and a solid capturing and blocking short section, the blocking ball backflow vertical pipe is arranged at the downstream of the ball throwing vertical pipe, two ends of the blocking ball backflow vertical pipe are respectively connected with an inlet of the accelerated collision short section and communicated with the solid capturing and blocking short section, and an outlet of the solid capturing and blocking short section is communicated with the liquid tank. According to the invention, through designing the impacting and polishing testing device, the influence of equipment and a manifold on the temporary plugging ball is simulated, and meanwhile, a circulating experimental structure is designed, so that the requirement of long-time testing is met, the deformation of the temporary plugging ball in the manifold can be effectively tested, and the indoor experimental basis is provided for obtaining the material performance, optimizing ball-throwing temporary plugging steering equipment and process and improving the fracturing efficiency.
Description
Technical Field
The invention relates to a temporary plugging ball impact polishing testing device for fracturing of a shale gas horizontal well, and belongs to the technical field of oil and gas field exploration and development.
Background
Shale gas plays an increasingly important role as a novel energy source in energy supply in China, and development of shale gas is greatly supported by China. In recent years, the shale gas development technology represented by Fuling around the Sichuan basin in China is gradually improved, and the hydraulic fracturing has a remarkable effect as a modification measure. The temporary plugging ball is adopted to plug the blast hole, experiments are carried out in normal pressure shale gas development and old well repeated fracturing, the temporary plugging ball enters the well bottom along a manifold along with fracturing fluid, and the abrasion of the temporary plugging ball on the manifold and the well bottom directly determines the acting efficiency of the temporary plugging ball. The size of the temporary plugging ball is small and is severe with the gradation of a blast hole, and the impact polishing effect of a manifold on the temporary plugging ball is not tested in the traditional experiment, so that whether the temporary plugging ball deforms when reaching the bottom of the well or not cannot be judged; although the size of the temporary plugging ball discharged back changes, the influence ratio of two factors, namely manifold abrasion and self dissolution, cannot be judged. Therefore, the abrasion condition of the temporary plugging ball manifold is effectively simulated, the form of the temporary plugging ball reaching the bottom of the well can be obtained, whether the temporary plugging ball can be effectively seated or not is judged, and experimental data can also be used as reference to optimize the ground manifold arrangement and the ball throwing device. According to the invention, through designing the impacting and polishing testing device, the influence of equipment and a manifold on the temporary plugging ball is simulated, and meanwhile, a circulating experimental structure is designed, so that the requirement of long-time testing is met, the deformation of the temporary plugging ball in the manifold can be effectively tested, and the indoor experimental basis is provided for obtaining the material performance, optimizing ball-throwing temporary plugging steering equipment and process and improving the fracturing efficiency.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device and a method for testing impact, grinding and polishing of the temporary plugging ball for fracturing of the shale gas horizontal well, which can effectively test the deformation of the temporary plugging ball in a manifold and provide experimental basis for fracturing construction.
The technical scheme adopted by the invention is as follows: the utility model provides a shale gas horizontal well fracturing is with interim stifled ball striking testing arrangement that polishes which characterized in that: comprises a circulating pump, a liquid tank, a sensor and an impact polishing test part, wherein the circulating pump is connected with the liquid tank through a liquid inlet pipeline, is connected with the impact polishing test part through a liquid discharge pipeline, the sensor is arranged on the liquid discharge pipeline, the impact grinding test part comprises a ball injection vertical pipe, a ball blocking backflow vertical pipe, a first accelerating collision short joint, a spiral grinding oil pipe, a second accelerating collision short joint and a solid capture blocking short joint, the drainage pipeline, the first accelerating collision nipple, the spiral polishing oil pipe, the second accelerating collision nipple and the solid capture blocking nipple are sequentially connected through pipelines, the ball-throwing vertical pipe is connected with the liquid discharge pipeline, the ball-blocking backflow vertical pipe is arranged at the downstream of the ball-throwing vertical pipe, the two ends of the solid capture stopping short section are respectively connected with the inlet of the first accelerating collision short section and communicated with the solid capture stopping short section, and the outlet of the solid capture stopping short section is communicated with the liquid tank.
According to above-mentioned technical scheme, the first nipple joint with higher speed is the same with the structure of the second nipple joint with higher speed, all includes the long straight tube of front end, accelerates nozzle, disc baffle and the short straight tube of rear end, and the long straight tube of front end, the connection terminal surface of nozzle, the connection terminal surface of disc baffle, the short straight tube of rear end pass through the fastener and link to each other with higher speed the nozzle includes the toper efflux hole, the export of toper efflux hole and the guiding gutter looks butt of disc baffle.
According to the technical scheme, the disc baffle comprises a disc connecting end face, the disc connecting end face is connected with the flow guide ring, and the side wall of the flow guide ring is axially provided with the flow guide groove.
According to the technical scheme, the solid capture blocking short circuit comprises a front end tee joint, a cup-shaped pore plate and a rear end straight pipe, wherein a plurality of flow guide grooves are formed in the circumferential direction of the cup-shaped pore plate, a plurality of flow guide holes are formed in the bottom of the pore plate, the cup-shaped pore plate is inserted into the tee joint along the direction of the bottom of the cup, and the bottom of the cup-shaped pore plate is located at an outlet in the vertical direction of the front end tee joint.
According to the technical scheme, the spiral polished oil pipe is coiled clockwise, and the outside of the spiral polished oil pipe is wrapped with a heat insulation material.
According to the technical scheme, the upper end of the pitching vertical pipe is connected with a pitching cock and a pitching electric valve.
According to the technical scheme, the upper part of the blocking ball backflow vertical pipe is connected with the buffer electric valve, and the lower part of the blocking ball backflow vertical pipe is connected with the release electric valve.
According to the technical scheme, the circulating pump is a double-pump combination, the liquid inlet is connected with the two-in-one liquid inlet pipeline, and the liquid outlet is connected with the two-in-one liquid discharge pipeline.
According to the technical scheme, the sensor comprises a pressure sensor and a flow sensor.
The testing method of the temporary plugging ball impact polishing testing device for fracturing of the shale gas horizontal well is characterized by comprising the following steps of: the method comprises the following steps:
⑴ preparing water reducing or glue solution according to the on-site formula, adding into a liquid tank, standing for a set time for use;
⑵ closing the electric valve at the vertical tube of the ball throwing pipe, opening the ball throwing cock at the upper part, putting the temporary blocking balls with designed quantity and size, and screwing the ball throwing cock;
⑶ starting the flow sensor and the pressure sensor to collect data, starting the circulating pump, setting the discharge capacity, and circulating the pump;
⑷, after the data is stable, the ball throwing electric valve is completely opened, and the ball throwing electric valve is closed after waiting for a set time;
⑸ opening the upper buffer electric valve at the ball blocking backflow vertical pipe, closing the lower release electric valve, and waiting for a set time;
⑹ closing the upper buffer electrically operated valve, opening the lower release electrically operated valve, waiting for a set time;
⑺ repeat step ⑸⑹ until the test time is reached.
⑻ washing the whole pipeline with clean water, detaching the vertical pipe, taking out the temporary ball, and maintaining the manifold.
The beneficial effects obtained by the invention are as follows:
1. according to the invention, through designing the impacting and polishing testing device, the influence of equipment and a manifold on the temporary plugging ball is simulated, and meanwhile, a circulating experimental structure is designed, so that the requirement of long-time testing is met, the deformation of the temporary plugging ball in the manifold can be effectively tested, and the indoor experimental basis is provided for obtaining the material performance, optimizing ball-throwing temporary plugging steering equipment and process and improving the fracturing efficiency.
2. The impact polishing test device and the matching device have simple structures, can simulate two times of accelerated impact and one time of polishing of the spiral oil pipe by single circulation, can effectively simulate impact and abrasion at a valve, a bent joint, a tee joint and a sleeve, can realize continuous circulation use, and can better simulate the migration of the temporary plugging ball in a horizontal well fracturing fluid environment.
3. The measuring method provided by the invention is used for indoor simulation of the abrasion condition of the temporary plugging ball, real-time acquisition of pressure and flow, ball throwing, capturing and secondary circulation can be realized by controlling the electric valve, the circulation frequency and time are artificially controlled, the times of impact and polishing are accurately counted, the simulation process is continuous, and the data reliability is high.
Drawings
FIG. 1 is a block diagram of the present invention.
FIG. 2 is a structural view of an impact sanding test section of the present invention.
Fig. 3 is a block diagram of an accelerated impact short in accordance with the present invention.
Fig. 4 is a structural view of a disc shutter in the present invention.
FIG. 5 is a block diagram of a solid capture blocker short in accordance with the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 and 2, the embodiment provides a temporary blocking ball impact polishing testing device for fracturing of a shale gas horizontal well, which comprises a circulating pump 11, a liquid tank 9, a sensor and an impact polishing testing part, wherein the circulating pump 11 is connected with the liquid tank 9 through a liquid inlet pipeline 10 and is connected with the impact polishing testing part through a liquid discharge pipeline 12, the sensor is arranged on the liquid discharge pipeline 12, the impact polishing testing part comprises a ball throwing vertical pipe, a blocking ball backflow vertical pipe, an accelerated collision short section 2, a spiral polishing oil pipe 3 and a solid capturing blocking short section 1, the liquid discharging pipeline 12, the accelerated collision short section 2, the spiral polishing oil pipe 3 and the solid capturing blocking short section 1 are sequentially connected through pipelines, the ball throwing vertical pipe is vertically arranged, the liquid discharge pipeline (main pipe manifold) is connected, the blocking ball backflow vertical pipe is arranged at the downstream of the ball throwing vertical pipe, and the solid capturing blocking short section at the upper end of the blocking ball, the lower end of the solid capturing and blocking pipe nipple 1 is communicated with a liquid discharge pipe column through a tee joint 8, namely is connected with an inlet of the accelerating collision nipple 2, and an outlet of the solid capturing and blocking pipe nipple 1 is communicated with a liquid tank 9.
The ball throwing vertical pipe is connected to the main manifold through a tee joint, and the temporary plugging ball falls into the main manifold through an electric valve under the action of gravity; the accelerated collision short circuit consists of an accelerated nozzle and a disc baffle, and the temporary plugging ball after collision is discharged through a circumferential diversion trench; the spiral polishing oil pipe is wound clockwise, and the temporary plugging ball flows along with the liquid from top to bottom; the solid capturing and blocking short circuit consists of a cup-shaped orifice plate and a tee joint, and a captured temporary plugging ball enters the solid backflow vertical pipe under the action of gravity. The connecting manifold is connected through a flange to communicate all parts, so that the flow of water, glue solution and the temporary plugging ball is reduced.
In this experimental apparatus, can set up the quantity of collision nipple joint 2 and spiral oil pipe 3 of polishing with higher speed according to the demand of experiment, namely collision nipple joint 2 can be more than two with higher speed, and spiral oil pipe 3 of polishing also can be more than two, and this embodiment explains with setting up two collision nipple joints 2 and spiral oil pipe 3 of polishing with higher speed as an example, as shown in fig. 2, two collision nipple joint settings are on the inlet and outlet pipeline of spiral oil pipe 3 of polishing with higher speed.
In this embodiment, the circulating pump 11 is a double-pump combination, the liquid inlet is connected to the two-in-one liquid inlet manifold 10, and the liquid outlet is connected to the two-in-one liquid outlet manifold 12; the liquid tank 9 is connected with a two-in-one liquid inlet manifold 10 and a drainage elbow; the sensors comprise a pressure sensor 13 and a flow sensor 14, and the pressure sensor 13 and the flow sensor 14 are connected in series on the drain pipe through flanges.
As shown in fig. 3 and 4, the short circuit 2 for accelerating collision is composed of four parts, namely a front-end long straight pipe 2-1, an accelerating nozzle 2-2, a disc baffle 2-3 and a rear-end short straight pipe 2-4, wherein the front-end long straight pipe, the connecting end face of the accelerating nozzle, the connecting end face of the disc baffle and the rear-end short straight pipe are connected through flange bolts. The accelerating nozzle 2-2 comprises a conical jet hole, the outlet of the conical jet hole is abutted to the guide groove of the disc baffle, the accelerating nozzle 2-2 realizes reducing through the conical guide hole, the diameter of the middle jet hole is 40 mm, and the temporary plugging ball impacts the disc baffle (similar to a simulation elbow) with liquid through the middle jet hole in an accelerating mode. The disc baffle 2-3 comprises a disc connecting end face, the disc connecting end face is connected with a flow guide ring, the side wall of the flow guide ring is axially provided with flow guide grooves 2-6, the width of each flow guide groove 2-6 is 30 mm (the diameter of each temporary plugging ball is less than 30 mm), and the temporary plugging balls after collision continuously enter the rear end short and straight pipes 2-4 along the flow guide grooves 2-6. The four parts of the short circuit 2 are coaxial when the collision is accelerated, the end faces are sealed through sealing gaskets, 4 through holes are formed in the circumferential direction of the flange plate, and the end faces are connected in a sealing mode through bolt/gasket/nut combined pre-tightening mode.
The spiral 3 thin-walled steel pipes of oil pipe of polishing, clockwise cloth, constant diameter 1 meter, constant pitch 100 millimeters, the number of turns 13.5, through flange bolted connection to 3 portions parcel insulation material in the oil pipe of polishing.
As shown in figure 5, the solid capture blocking short connector 1 comprises three parts, namely a tee joint 1-3 at the front end, a cup-shaped pore plate 1-2 and a straight pipe 1-1 at the rear end, which are connected through flange bolts 1-4. A plurality of 4 mm water conservancy diversion holes have been seted up to cup type orifice plate bottom, along orifice plate bottom evenly distributed. The wall surface of the cup-shaped pore plate is provided with a diversion groove, the width of the diversion groove is 4 mm, and the diversion groove is uniformly distributed along the wall surface. The cup-shaped pore plate is inserted into the tee joint along the direction of the cup bottom, and the bottom of the cup-shaped pore plate is tangent to the central shaft of the tee joint. The diameter of the temporary plugging ball is far larger than the diversion pore of the pore plate, the temporary plugging ball is blocked by the pore plate and cannot pass through the diversion pore of the pore plate, the temporary plugging ball falls into a pipeline at the bottom of the tee joint under the action of gravity, and liquid and debris penetrate through the cup-shaped pore plate and enter the liquid tank. All parts of the short circuit are connected through flange bolts, and the end faces are sealed through sealing gaskets. The flange plate is provided with 4 through holes in the circumferential direction, and end face sealing connection is achieved through combined pre-tightening of bolts, gaskets and nuts.
The upper end of the pitching vertical pipe is connected with a pitching cock 5 and is connected with a pitching electric valve 4, the upper part of the ball blocking backflow vertical pipe is connected with a buffer electric valve 6 through a flange bolt, the lower part of the ball blocking backflow vertical pipe is connected with a release electric valve 7 through a flange bolt, the upper buffer electric valve and the lower release electric valve are alternately opened, namely, the upper buffer electric valve is opened at the early stage of ①, the lower release electric valve is closed, the temporary blocking ball is subjected to a circulation test, and falls into the backflow vertical pipe after being blocked by a captured baffle and passes through the upper buffer electric valve to be accumulated on the top of the lower release electric valve, and the upper buffer electric valve is closed at the later stage of ②, the lower release electric.
During testing, the water reducing and blocking liquid or the glue liquid is poured into the liquid tank 9 according to a field formula, the liquid is sucked into the circulating pump 11 through the two-in-one liquid inlet manifold 10, the liquid is discharged through the two-in-one liquid outlet manifold 12 after being pressurized, and the liquid flows through the pressure sensor 13 and the flow sensor 14 and is fed back to control the circulating pump 11; the liquid enters the impact polishing test part, a temporary blocking ball is placed through a ball-throwing cock 5 on the upper part of the ball-throwing vertical pipe, and a ball-throwing electric valve 4 is opened to finish the ball-throwing action; the temporary blocking ball enters an accelerated impact short circuit 2 to complete a first collision test; the temporary plugging ball enters the spiral polishing oil pipe 3 along with the liquid to finish the polishing test of the inner wall of the circular pipe; the temporary blocking ball enters the upper part to accelerate and impact the short circuit 2, and the secondary collision test is completed; the temporary plugging ball enters a solid capture blocking short circuit 1, and falls into a plugging ball backflow vertical pipe; the vertical pipes of the double electric valves are sequentially opened and closed from top to bottom, and the temporary plugging balls fall and enter the simulation manifold circulation test again.
The embodiment also provides a testing method of the temporary plugging ball impact polishing testing device for fracturing of the shale gas horizontal well, which specifically comprises the following steps:
⑴ preparing water reducing or glue solution according to the on-site formula, adding into the liquid tank 9, standing for 4 hours for use.
⑵ closing the electric valve 4, opening the upper ball-throwing cock 5, putting the temporary blocking balls with designed quantity and size, and screwing the ball-throwing cock 5.
⑶ start the flow sensor 13 and the pressure sensor 14 to collect data, start the circulating pump 11, set the discharge capacity, and go the pump circulation.
⑷ after the data has stabilized, the bowling electric valve 4 is fully opened, and after waiting for 1 minute, it is closed.
⑸ opening the upper buffer electric valve at the solid reflux vertical pipe with double electric valves, closing the lower release electric valve, timing for 5 min
⑹ the upper buffer electric valve 6 at the ball blocking backflow stand pipe is closed, the lower release electric valve 7 is opened, and the closing is carried out after waiting for 1 minute.
⑺ repeat step ⑸⑹ until the test time is reached.
⑻ washing system with clean water, detaching the solid reflux vertical tube, taking out the temporary blocking ball, and maintaining the manifold.
Claims (11)
1. The utility model provides a shale gas horizontal well fracturing is with interim stifled ball striking testing arrangement that polishes which characterized in that: the device comprises a circulating pump, a liquid tank, a sensor and an impact polishing test part, wherein the circulating pump is connected with the liquid tank through a liquid inlet pipeline and is connected with the impact polishing test part through a liquid discharge pipeline, the sensor is arranged on the liquid discharge pipeline, the impact polishing test part comprises a pitching vertical pipe, a ball blocking backflow vertical pipe, an acceleration collision short section, a spiral polishing oil pipe and a solid capture blocking short circuit, the liquid discharge pipeline, the acceleration collision short section, the spiral polishing oil pipe and the solid capture blocking short circuit are sequentially connected through a pipeline, the pitching vertical pipe is connected with the liquid discharge pipeline, the ball blocking backflow vertical pipe is arranged at the downstream of the pitching vertical pipe, two ends of the ball blocking short section are respectively connected with an inlet of the acceleration collision short section and are communicated with the solid capture blocking short section, and an outlet of the solid capture blocking short.
2. The shale gas horizontal well fracturing is with interim stifled ball striking testing arrangement that polishes according to claim 1, characterized in that: the accelerating collision short sections can be two or more than two and are respectively arranged on a pipeline of the impact grinding test part.
3. The shale gas horizontal well fracturing is with interim stifled ball striking testing arrangement that polishes according to claim 1, characterized in that: the short section comprises a front-end long straight pipe, an accelerating nozzle, a disc baffle and a rear-end short straight pipe, wherein the front-end long straight pipe, the connecting end face of the accelerating nozzle, the connecting end face of the disc baffle and the rear-end short straight pipe are connected through fasteners, the accelerating nozzle comprises a conical jet hole, and the outlet of the conical jet hole is abutted to the diversion trench of the disc baffle.
4. The shale gas horizontal well fracturing is with interim stifled ball striking testing arrangement that polishes according to claim 2, characterized in that: the disc baffle comprises a disc connecting end face, the disc connecting end face is connected with a flow guide ring, and a flow guide groove is axially formed in the side wall of the flow guide ring.
5. The shale gas horizontal well fracturing is with stifled ball striking grinding testing arrangement of temporary of claim 1 or 2, characterized in that: the solid capture blocking short circuit comprises a front end tee joint, a cup-shaped pore plate and a rear end straight pipe, wherein a plurality of flow guide grooves are formed in the circumferential direction of the cup-shaped pore plate, a plurality of flow guide holes are formed in the bottom of the pore plate, the cup-shaped pore plate is inserted into the tee joint along the direction of the bottom of the cup, and the bottom of the cup-shaped pore plate is located at an outlet in the vertical direction of the front end tee joint.
6. The shale gas horizontal well fracturing is with stifled ball striking grinding testing arrangement of temporary of claim 1 or 2, characterized in that: the spiral polishing oil pipe is coiled clockwise, and a heat insulation material is wrapped outside the spiral polishing oil pipe.
7. The shale gas horizontal well fracturing is with stifled ball striking grinding testing arrangement of temporary of claim 1 or 2, characterized in that: the upper end of the pitching vertical pipe is connected with a pitching cock and is connected with a pitching electric valve.
8. The shale gas horizontal well fracturing temporary plugging ball impact grinding test device according to claim 1 or 2
The device is characterized in that: the upper part of the blocking ball backflow vertical pipe is connected with a buffer electric valve, and the lower part of the blocking ball backflow vertical pipe is connected with a release electric valve.
9. The shale gas horizontal well fracturing is with stifled ball striking grinding testing arrangement of temporary of claim 1 or 2, characterized in that: the circulating pump is a double-pump combination, the liquid inlet is connected with the two-in-one liquid inlet pipeline, and the liquid outlet is connected with the two-in-one liquid discharging pipeline.
10. The shale gas horizontal well fracturing is with stifled ball striking grinding testing arrangement of temporary of claim 1 or 2, characterized in that: the sensor comprises a pressure sensor and a flow sensor.
11. The testing method of the temporary plugging ball impact grinding testing device for fracturing of the shale gas horizontal well according to claim 1, characterized in that: the method comprises the following steps:
⑴ preparing water reducing or glue solution according to the on-site formula, adding into a liquid tank, standing for a set time for use;
⑵ closing the electric valve at the vertical tube of the ball throwing pipe, opening the ball throwing cock at the upper part, putting the temporary blocking balls with designed quantity and size, and screwing the ball throwing cock;
⑶ starting the flow sensor and the pressure sensor to collect data, starting the circulating pump, setting the discharge capacity, and circulating the pump;
⑷, after the data is stable, the ball throwing electric valve is completely opened, and the ball throwing electric valve is closed after waiting for a set time;
⑸ opening the upper buffer electric valve at the ball blocking backflow vertical pipe, closing the lower release electric valve, and waiting for a set time;
⑹ closing the upper buffer electrically operated valve, opening the lower release electrically operated valve, waiting for a set time;
⑺ repeat step ⑸⑹ until test time is reached;
⑻ washing the whole pipeline with clean water, detaching the vertical pipe, taking out the temporary ball, and maintaining the manifold.
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| CN201911034978.9A CN111272588B (en) | 2019-10-29 | 2019-10-29 | Shale gas horizontal well fracturing temporary plugging ball impact polishing testing device and testing method |
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| CN201911034978.9A CN111272588B (en) | 2019-10-29 | 2019-10-29 | Shale gas horizontal well fracturing temporary plugging ball impact polishing testing device and testing method |
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| CN111272588A true CN111272588A (en) | 2020-06-12 |
| CN111272588B CN111272588B (en) | 2022-06-03 |
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| CN204495654U (en) * | 2015-02-05 | 2015-07-22 | 中国石油化工股份有限公司 | A kind of stifled strength testing device temporarily |
| CN108222884A (en) * | 2016-12-15 | 2018-06-29 | 中国石油天然气股份有限公司 | Pitching simulator and method |
| CN206787932U (en) * | 2017-03-30 | 2017-12-22 | 中联煤层气国家工程研究中心有限责任公司 | A kind of fracturing plugging ball performance testing device |
| CN209485873U (en) * | 2018-11-05 | 2019-10-11 | 中国石油化工股份有限公司 | Solid granulates diverting agent plugging strength simulating-estimating device |
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