CN204252993U - Mechanical plugging experimental device for plugging ball - Google Patents
Mechanical plugging experimental device for plugging ball Download PDFInfo
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- CN204252993U CN204252993U CN201420675398.4U CN201420675398U CN204252993U CN 204252993 U CN204252993 U CN 204252993U CN 201420675398 U CN201420675398 U CN 201420675398U CN 204252993 U CN204252993 U CN 204252993U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 124
- 239000007788 liquid Substances 0.000 claims abstract description 94
- 238000010521 absorption reaction Methods 0.000 claims abstract description 59
- 238000005086 pumping Methods 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 31
- 238000002474 experimental method Methods 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims description 58
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a shutoff ball machinery shutoff experimental apparatus, include: the device comprises a water tank, a water feeding pipeline, a plunger pump, a pressure gauge, a pressure relief device, a pumping pipeline, a metal experiment pipe column and at least two water absorption amount control pipelines; wherein, the water tank is used for containing experimental liquid; the water tank, the water feeding pipeline, the plunger pump, the pumping pipeline, the metal experiment pipe column and the water absorption amount control pipeline are sequentially connected. The utility model discloses, through the mechanical shutoff experimental apparatus of shutoff ball that water tank, plunger pump and metal experiment tubular column constitute, can carry out the experiment to the performance of shutoff ball and measure, provide data support for actual operation.
Description
Technical Field
The utility model relates to an oil field production equipment experimental apparatus field especially relates to a shutoff ball machinery shutoff experimental apparatus.
Background
When the well is completed, the reservoir is subjected to the layered fracturing operation, so that the utilization degree of reserves can be increased, the yield of a single well is improved, and good economic and social benefits are obtained. The plugging ball is adopted for the layered fracturing, and the method has the advantages of simple use, less matched equipment, low cost, small influence on a shaft and the like, so that the method is widely applied.
The plugging ball separate layer fracturing is a mechanical plugging layer-by-layer fracturing technology, is suitable for separate layer fracturing construction of a multi-layer section perforation oil-gas layer with small interval between reservoir layers and obvious reservoir ground stress difference, and has the technical principle that: under the control of the ground stress difference, firstly, the reservoir stratum section with low fracture pressure is pressed open to realize the reconstruction of the stratum section; and then putting a certain amount of blocking balls, and bringing the blocking balls into the perforation holes of the casing of the pressed-open interval through fracturing fluid by utilizing the characteristic of large liquid absorption of the pressed-open interval to block the perforation holes of the casing of the pressed-open interval, so that the fracturing fluid is forced to enter the unpressed interval, and the layered reconstruction is realized.
However, in actual operation, the blocking performance of the blocking ball is uncertain, so that the problems of incomplete layering and poor reconstruction effect are often caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a shutoff ball machinery shutoff experimental apparatus to overcome in prior art because the wind degree performance of uncertain shutoff ball causes the layering imperfect, reform transform the not good technical problem of effect.
The utility model provides a shutoff ball machinery shutoff experimental apparatus, include:
the device comprises a water tank, a water feeding pipeline, a plunger pump, a pressure gauge, a pressure relief device, a pumping pipeline, a metal experiment pipe column and at least two water absorption amount control pipelines;
wherein the water tank is used for containing experimental liquid;
the water tank is connected with the plunger pump through the water feeding pipeline;
the plunger pump is connected with the metal experiment tubular column through the pumping pipeline;
the pumping pipeline is provided with the pressure gauge and the pressure relief device;
the metal experiment tubular column is sequentially provided with a joint, at least two perforated sleeves and a sleeve plug;
the perforated sleeves correspond to the water absorption amount control pipelines one by one;
the perforated sleeve is connected with one end of the water absorption capacity control pipeline corresponding to the perforated sleeve through a liquid outlet;
each water absorption control pipeline is provided with an opening and closing valve, a flowmeter and a throttle valve;
the other end of each water absorption amount control pipeline is connected with the water tank;
each perforated sleeve consists of an outer side wall and an inner side wall;
a cavity is formed between the inner side wall and the outer side wall;
a test hole is formed in the inner side wall;
the outer side wall is provided with the liquid outlet.
Further, the pressure relief device comprises:
the pressure relief valve and the pressure relief pipe; wherein,
the pressure relief valve is arranged on the pressure relief pipe;
the pressure relief pipe is connected with the pump pumping pipeline.
Further, the pressure relief pipe is connected with the pump pumping pipeline through a three-way device.
Furthermore, the cavity is filled with filter materials.
Furthermore, the filter material is formed by sintering metal particles.
Further, the test holes are spirally distributed on the inner side wall.
Further, the test holes are distributed on a spiral line with a spiral angle of 60 °.
Further, the distribution density of the test holes is 16 per meter.
Further, the plunger pump is an electric plunger pump;
the motor of the electric plunger pump is connected with a frequency converter;
the frequency converter controls a motor of the electric plunger pump.
Furthermore, the number of the water absorption amount control pipelines is four.
The technical effects of the utility model are that: through the mechanical shutoff experimental apparatus of shutoff ball that comprises water tank, water supply line, plunger pump, manometer, pressure relief device, pump income pipeline, metal experiment tubular column, at least two water absorption capacity control pipelines, can carry out the experimental measurement to the performance of shutoff ball to provide data support for the actual operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural view of a first embodiment of the mechanical plugging experimental device for a plugging ball of the present invention;
fig. 2 is another schematic structural diagram of the first mechanical plugging experimental device for a plugging ball of the present invention;
fig. 3 is another schematic structural diagram of the first mechanical plugging experimental device for a plugging ball of the present invention;
fig. 4 is a schematic structural view of a second embodiment of the mechanical plugging experimental device for a plugging ball of the present invention;
fig. 5 is the third schematic structural diagram of the mechanical plugging experimental device for plugging balls of the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
Fig. 1 is the schematic structural diagram of the first mechanical plugging experimental device for plugging balls of the utility model. Fig. 2 is another schematic structural diagram of the first mechanical plugging experimental device for plugging balls of the present invention. Fig. 3 is another schematic structural diagram of the first mechanical plugging experimental device for plugging balls of the present invention.
As shown in fig. 1, fig. 2 and fig. 3, the utility model discloses a mechanical shutoff experimental apparatus of shutoff ball of embodiment one includes:
the device comprises a water tank 1, a water feeding pipeline, a plunger pump 2, a pressure gauge 6, a pressure relief device 20, a pumping pipeline, a metal experiment tubular column 3 and two water absorption amount control pipelines 4;
wherein the water tank 1 is used for containing experimental liquid;
the water tank 1 is connected with the plunger pump 2 through the water feeding pipeline;
the plunger pump 2 is connected with the metal experiment tubular column 3 through the pumping pipeline;
the pumping pipeline is provided with the pressure gauge 6 and the pressure relief device 20;
the metal experiment tubular column 3 is sequentially provided with a joint 8, two perforated sleeves 9 and a sleeve plug 10;
the perforated sleeves 9 correspond to the water absorption amount control pipelines 4 one by one;
the perforated sleeve 9 is connected with one end of the water absorption amount control pipeline 4 corresponding to the perforated sleeve through a liquid outlet 13;
the other end of each water absorption amount control pipeline 4 is provided with an opening and closing valve 14, a flowmeter 15 and a throttle valve 16;
each water absorption amount control pipeline 4 is connected with the water tank 1;
each of said apertured sleeves 9 is formed by an outer side wall 18 and an inner side wall 17;
the inner side wall 17 and the outer side wall 18 form a cavity 12 therebetween;
a test hole 11 is formed in the inner side wall 17;
the liquid outlet 13 is provided in the outer side wall 18.
In particular, the fracturing process is a major measure for the stimulation of oil and gas wells and is commonly used in various oil fields. The method utilizes a ground high-pressure pump set to pump mucus into the stratum at a discharge capacity greatly exceeding the absorption capacity of the stratum, so that cracks are formed in the stratum, and the flow conductivity of an oil-gas layer is improved, thereby achieving the purpose of increasing the yield. The residual fracturing fluid discharged by the fracturing operation contains guar gum, formaldehyde, petroleum and other various additives, has the characteristics of high turbidity, high viscosity, high COD (chemical oxygen demand) and the like, is environment-friendly and has high standard treatment difficulty, and is wastewater with the highest treatment difficulty in oilfield sewage. If the fracturing fluid which is returned to the ground is discharged without being treated, the surrounding environment, particularly crops and surface water systems, can be polluted.
More specifically, the water tank 1 is a liquid containing tank capable of containing an experimental liquid. The test liquid contained in the water tank 1 can be passed by the plunger pump 2 along the feed line to the pump-in line under the action of the plunger pump 2.
The plunger pump 2 is a pump which can deliver liquid by means of a periodic change in the volume of the working chamber. The mechanical energy of the prime motor is directly converted into pressure energy for conveying liquid through the pump; the capacity of the pump depends only on the value of the change in the volume of the working chamber and its number of changes per unit of time, theoretically independently of the discharge pressure. Reciprocating pumps produce a periodic variation in working chamber volume by means of the reciprocating motion of a piston within a hydraulic cylinder working chamber (or by periodic elastic deformation of a flexible element such as a diaphragm, bellows, etc. within the working chamber). Structurally, the working chamber of the reciprocating pump is isolated from the outside by a sealing device and is communicated or closed with a pipeline through pump valves (a suction valve and a discharge valve).
Preferably, the plunger pump 2 is an electric plunger pump, and the frequency converter 5 is connected to the electric motor of the electric plunger pump 2 via an electric lead.
The pump is provided with a pressure gauge 6, and the pressure gauge 6 can measure the pressure of the liquid in the pump.
A pressure relief device 20 is also provided on the pump inlet line. The pressure of the liquid pumped into the line can be reduced by means of the pressure relief device 20.
The experimental liquid can reach the metal experimental tubular column 3 through a pumping pipeline. The metal experiment tubular column 3 is formed by sequentially connecting a joint 8, two perforated sleeves 9 and a sleeve plug 10.
The perforated sleeve 9 consists of an inner side wall 17 and an outer side wall 18, a test hole 11 is arranged on the inner side wall 17, and a liquid outlet 13 is arranged on the outer side wall 18. And the inner side wall 17 and the outer side wall 18 form the cavity 12.
The test liquid entering the metal test column 3 flows through the cavity 12 of each perforated casing 9 in turn and flows out of the test holes 11 in the inner side wall 17 and the liquid outlet 13 in the outer side wall 18. In the experimental process, a sealing ball for experiment can be put in the water tank 1, and the sealing ball can reach the cavity 12 along with the experimental liquid. The plugging ball can be plugged on the test hole 11, so that the experimental liquid is prevented from flowing out of the test hole 11.
After flowing out of the liquid outlet 13, the test liquid flows into the water-absorbing capacity control pipe 4 connected to the liquid outlet 13 of each perforated sleeve 9. Each of the water suction amount control pipes 4 is provided with an opening/closing valve 14, a flow meter 15, and a throttle valve 16. The flow meter 15 measures the flow rate of the test liquid flowing through the water absorption control pipe 4. The throttle valve 16 is a valve that can control the flow of fluid by changing the throttle section or the throttle length. The throttle valve 16 can be used to control the flow rate of the test liquid flowing through the suction control pipe 4. The test liquid sequentially passing through the open/close valve 14, the flow meter 15, and the throttle valve 16 finally flows back into the water tank 1.
The technical effect of the embodiment is as follows: through the mechanical shutoff experimental apparatus of shutoff ball that comprises water tank 1, water supply line, plunger pump 2, manometer 6, pressure relief device 20, pump income pipeline, metal experiment tubular column 3, two water absorption capacity control pipelines 4, can carry out the experimental measurement to the performance of shutoff ball to provide data support for actual operation.
Example two
Fig. 4 is the schematic structural diagram of the second embodiment of the mechanical plugging experimental device for plugging balls of the utility model.
As shown in fig. 4, the second mechanical plugging experimental apparatus of the plugging ball of the embodiment of the present invention comprises:
the device comprises a water tank 1, a water feeding pipeline, a plunger pump 2, a pressure gauge 6, a pressure release valve 21, a pressure release pipe 7, a pumping pipeline, a metal experiment tubular column 3 and two water absorption amount control pipelines 4;
wherein the water tank 1 is used for containing experimental liquid;
the water tank 1 is connected with the plunger pump 2 through the water feeding pipeline;
the plunger pump 2 is connected with the metal experiment tubular column 3 through the pumping pipeline;
the pumping pipeline is provided with the pressure gauge 6;
the pumping pipeline is also provided with the pressure relief pipe 7;
the pressure relief valve 21 is arranged on the pressure relief pipe 7;
the metal experiment tubular column 3 is sequentially provided with a joint 8, two perforated sleeves 9 and a sleeve plug 10;
the perforated sleeves 9 correspond to the water absorption amount control pipelines 4 one by one;
the perforated sleeve 9 is connected with one end of the water absorption amount control pipeline 4 corresponding to the perforated sleeve through a liquid outlet 13;
each water absorption amount control pipeline 4 is provided with an opening and closing valve 14, a flowmeter 15 and a throttle valve 16;
the other end of each water absorption amount control pipeline 4 is connected with the water tank 1;
each of said apertured sleeves 9 is formed by an outer side wall 18 and an inner side wall 17;
the inner side wall 17 and the outer side wall 18 form a cavity 12 therebetween;
a test hole 11 is formed in the inner side wall 17;
the liquid outlet 13 is provided in the outer side wall 18.
Specifically, the water tank 1 is a liquid containing tank capable of containing an experimental liquid. The test liquid contained in the water tank 1 can be passed by the plunger pump 2 along the feed line to the pump-in line under the action of the plunger pump 2.
The plunger pump 2 is a pump which can deliver liquid by means of a periodic change in the volume of the working chamber. The mechanical energy of the prime motor is directly converted into pressure energy for conveying liquid through the pump; the capacity of the pump depends only on the value of the change in the volume of the working chamber and its number of changes per unit of time, theoretically independently of the discharge pressure. Reciprocating pumps produce a periodic variation in working chamber volume by means of the reciprocating motion of a piston within a hydraulic cylinder working chamber (or by periodic elastic deformation of a flexible element such as a diaphragm, bellows, etc. within the working chamber). Structurally, the working chamber of the reciprocating pump is isolated from the outside by a sealing device and is communicated or closed with a pipeline through pump valves (a suction valve and a discharge valve).
Preferably, the plunger pump 2 is an electric plunger pump, and the frequency converter 5 is connected to the electric motor of the electric plunger pump 2 via an electric lead.
The pump is provided with a pressure gauge 6, and the pressure gauge 6 can measure the pressure of the liquid in the pump.
A pressure relief pipe 7 is also arranged on the pump inlet pipeline, and a pressure relief valve 21 is arranged on the pressure relief pipe 7. The pressure of the liquid pumped into the line can be reduced by means of the pressure relief valve 7.
Preferably, the pressure relief pipe 7 is connected to the pumping line by a three-way device.
The experimental liquid can reach the metal experimental tubular column 3 through a pumping pipeline. The metal experiment tubular column 3 is formed by sequentially connecting a joint 8, two perforated sleeves 9 and a sleeve plug 10.
The perforated sleeve 9 consists of an inner side wall 17 and an outer side wall 18, a test hole 11 is arranged on the inner side wall 17, and a liquid outlet 13 is arranged on the outer side wall 18. And the inner side wall 17 and the outer side wall 18 form the cavity 12.
The test liquid entering the metal test column 3 flows through the cavity 12 of each perforated casing 9 in turn and flows out of the test holes 11 in the inner side wall 17 and the liquid outlet 13 in the outer side wall 18. In the experimental process, a sealing ball for experiment can be put in the water tank 1, and the sealing ball can reach the cavity 12 along with the experimental liquid. The plugging ball can be plugged on the test hole 11, so that the experimental liquid is prevented from flowing out of the test hole 11.
After flowing out of the liquid outlet 13, the test liquid flows into the water-absorbing capacity control pipe 4 connected to the liquid outlet 13 of each perforated sleeve 9. Each of the water suction amount control pipes 4 is provided with an opening/closing valve 14, a flow meter 15, and a throttle valve 16. The flow meter 15 measures the flow rate of the test liquid flowing through the water absorption control pipe 4. The throttle valve 16 is a valve that can control the flow of fluid by changing the throttle section or the throttle length. The throttle valve 16 can be used to control the flow rate of the test liquid flowing through the suction control pipe 4. The test liquid sequentially passing through the open/close valve 14, the flow meter 15, and the throttle valve 16 finally flows back into the water tank 1.
The difference between the second embodiment and the first embodiment is that the pressure relief device 20 is specifically realized by the pressure relief pipe 7 and the pressure relief valve 21.
Similar to the technical effect of the first embodiment, the technical effect of the present embodiment is: through the mechanical shutoff experimental apparatus of shutoff ball that comprises water tank 1, water supply line, plunger pump 2, manometer 6, pressure release pipe 7, relief valve 21, pump income pipeline, metal experiment tubular column 3, two water absorption capacity control pipelines 4, can carry out the experimental measurement to the performance of shutoff ball to provide data support for the actual operation.
EXAMPLE III
Fig. 5 is the third schematic structural diagram of the mechanical plugging experimental device for plugging balls of the utility model.
As shown in fig. 5, the third embodiment of the present invention provides a mechanical plugging experimental apparatus for plugging balls, including:
the device comprises a water tank 1, a water feeding pipeline, a plunger pump 2, a pressure gauge 6, a pressure release valve 21, a pressure release pipe 7, a pumping pipeline, a metal experiment tubular column 3 and four water absorption amount control pipelines 4;
wherein the water tank 1 is used for containing experimental liquid;
the water tank 1 is connected with the plunger pump 2 through the water feeding pipeline;
the plunger pump 2 is connected with the metal experiment tubular column 3 through the pumping pipeline;
the pumping pipeline is provided with the pressure gauge 6;
the pumping pipeline is also provided with the pressure relief pipe 7;
the pressure relief valve 21 is arranged on the pressure relief pipe 7;
the metal experiment tubular column 3 is sequentially provided with a joint 8, four perforated sleeves 9 and a sleeve plug 10;
the perforated sleeves 9 correspond to the water absorption amount control pipelines 4 one by one;
the perforated sleeve 9 is connected with the first end of the water absorption amount control pipeline 4 corresponding to the perforated sleeve through a liquid outlet 13;
each water absorption amount control pipeline 4 is provided with an opening and closing valve 14, a flowmeter 15 and a throttle valve 16;
the other end of each water absorption amount control pipeline 4 is connected with the water tank 1;
each of said apertured sleeves 9 is formed by an outer side wall 18 and an inner side wall 17;
the inner side wall 17 and the outer side wall 18 form a cavity 12 therebetween;
a test hole 11 is formed in the inner side wall 17;
the liquid outlet 13 is provided in the outer side wall 18.
Specifically, the water tank 1 is a liquid containing tank capable of containing an experimental liquid. The test liquid contained in the water tank 1 can be passed by the plunger pump 2 along the feed line to the pump-in line under the action of the plunger pump 2.
The plunger pump 2 is a pump which can deliver liquid by means of a periodic change in the volume of the working chamber. The mechanical energy of the prime motor is directly converted into pressure energy for conveying liquid through the pump; the capacity of the pump depends only on the value of the change in the volume of the working chamber and its number of changes per unit of time, theoretically independently of the discharge pressure. Reciprocating pumps produce a periodic variation in working chamber volume by means of the reciprocating motion of a piston within a hydraulic cylinder working chamber (or by periodic elastic deformation of a flexible element such as a diaphragm, bellows, etc. within the working chamber). Structurally, the working chamber of the reciprocating pump is isolated from the outside by a sealing device and is communicated or closed with a pipeline through pump valves (a suction valve and a discharge valve).
Preferably, the plunger pump 2 is an electric plunger pump, and the frequency converter 5 is connected to the electric motor of the electric plunger pump 2 via an electric lead.
The pump is provided with a pressure gauge 6, and the pressure gauge 6 can measure the pressure of the liquid in the pump.
A pressure relief pipe 7 is also arranged on the pump inlet pipeline, and a pressure relief valve 21 is arranged on the pressure relief pipe 7. The pressure of the liquid pumped into the line can be reduced by means of the pressure relief valve 7.
Preferably, the pressure relief pipe 7 is connected to the pumping line by a three-way device.
The experimental liquid can reach the metal experimental tubular column 3 through a pumping pipeline. The metal experiment tubular column 3 is formed by sequentially connecting a joint 8, two perforated sleeves 9 and a sleeve plug 10.
The perforated sleeve 9 consists of an inner side wall 17 and an outer side wall 18, a test hole 11 is arranged on the inner side wall 17, and a liquid outlet 13 is arranged on the outer side wall 18. And the inner side wall 17 and the outer side wall 18 form the cavity 12.
The test liquid entering the metal test column 3 flows through the cavity 12 of each perforated casing 9 in turn and flows out of the test holes 11 in the inner side wall 17 and the liquid outlet 13 in the outer side wall 18. In the experimental process, a sealing ball for experiment can be put in the water tank 1, and the sealing ball can reach the cavity 12 along with the experimental liquid. The plugging ball can be plugged on the test hole 11, so that the experimental liquid is prevented from flowing out of the test hole 11.
After flowing out of the liquid outlet 13, the test liquid flows into the water-absorbing capacity control pipe 4 connected to the liquid outlet 13 of each perforated sleeve 9. Each of the water suction amount control pipes 4 is provided with an opening/closing valve 14, a flow meter 15, and a throttle valve 16. The flow meter 15 measures the flow rate of the test liquid flowing through the water absorption control pipe 4. The throttle valve 16 is a valve that can control the flow of fluid by changing the throttle section or the throttle length. The throttle valve 16 can be used to control the flow rate of the test liquid flowing through the suction control pipe 4. The test liquid sequentially passing through the open/close valve 14, the flow meter 15, and the throttle valve 16 finally flows back into the water tank 1.
The difference between the third embodiment and the second embodiment is that the mechanical plugging experimental device for the plugging ball is provided with four perforated sleeves 9 and correspondingly four water absorption control pipelines 4. The increase of the number of the perforated sleeves 9 and the water absorption amount control pipelines 4 can simulate the oil field level more vividly in actual operation.
Similar to the technical effect of the second embodiment, the technical effect of the present embodiment is: through the mechanical shutoff experimental apparatus of shutoff ball that comprises water tank 1, water supply line, plunger pump 2, manometer 6, pressure release pipe 7, relief valve 21, pump income pipeline, metal experiment tubular column 3, two water absorption capacity control pipelines 4, can carry out the experimental measurement to the performance of shutoff ball to provide data support for the actual operation.
Example four
On the basis of the above three embodiments, the cavity 12 is further filled with a filter material.
The filtering material is a general term of water treatment filtering materials and is mainly used for filtering domestic sewage, industrial sewage, pure water and drinking water. Typically comprising quartz sand, white coal or ore, etc.
Preferably, the filter material of the present embodiment is formed by sintering metal particles.
The cavity 12 is filled with filter materials formed by sintering metal particles, so that the condition of the oil field in actual operation can be simulated more vividly.
More preferably, the test holes 11 are arranged on the inner side wall 17 in a spiral shape of 60 °, and the arrangement density of the test holes 11 is set to 16 per meter.
The working principle of the mechanical plugging experimental device with the plugging ball is further explained below.
Referring to fig. 5, the perforated sleeves 9 are numbered 1, 2, 3, 4 from top to bottom, and the water absorption amount control tubes 4 are numbered 1, 2, 3, 4 from top to bottom.
1. Preparing a plugging ball to be tested, wherein the diameter of the plugging ball is not less than the diameter of the test hole, and the diameter of the general plugging ball is more suitable to be 1.1-1.5 times of the diameter of the test hole. The method comprises the steps of preparing 6-10 cubes of fracturing fluid for experiments in a water tank 1 according to a fracturing fluid formula of an on-site construction well, closing a pressure release valve 21, adjusting the opening degree of throttle valves on a No. 1-4 water absorption control pipe 4 to be 20% of the total opening degree, opening all other valve pieces, adjusting the liquid injection displacement of an electric plunger pump to be gradually increased from 0.1 cube/minute to 1 cube/minute through a frequency converter to carry out pressure test on an experimental device, adjusting the No. 1-4 throttle valves to be the maximum opening degree after the pressure test is finished, and carrying out the step 2.
2. And measuring the minimum critical discharge capacity required for realizing plugging under different communicated test holes.
Firstly, opening a valve on a No. 1 water absorption capacity control pipe 4, closing a pressure release valve, opening an electric plunger pump 2, adjusting the liquid discharge capacity to be 0.1 cubic/minute, recording the pressure value of a pressure gauge, and putting a seal into a water tank 116 ~ 24 stifled balls wait to block after the ball entering pipeline, observe manometer pressure, if the pressure value does not change around the bowling, then improve liquid discharge capacity step by step, the range of improving is 0.1 cube at every turn, the output bowling once of improving once, the input quantity is 16 ~ 24, pressure value is higher than before the bowling manometer pressure value after appearing the bowling for the first time until, the stop pump, the record discharge capacity Q this moment16(ii) a Opening the pressure relief valve for pressure relief, unscrewing the casing plug 10, closing the pressure relief valve, unscrewing the pumping pipeline and the connector 8, unscrewing the No. 1 water absorption control pipe 4 and the No. 1 perforated casing 9, connecting the pumping pipeline to the liquid outlet of the No. 1 perforated casing 9, opening the electric plunger pump 2 to reversely inject liquid with the displacement of 0.2 cubic per minute, and removing and collecting a blocking ball at the test hole 11 of the No. 1 perforated casing 9. And stopping the pump, screwing the sleeve plug 10, and reconnecting the pumping pipeline with the connector 8, the No. 1 water absorption control pipe 4 and the No. 1 perforated sleeve 9.
Secondly, open the on-off valve on the No. 1 ~ 2 water absorption control tube 4, close the relief valve, open electric plunger pump 2, adjust the liquid discharge capacity to 0.1 cube/minute, record the manometer pressure value, drop into 32 ~ 48 blocking balls to water tank 1, observe manometer pressure, if the pressure value does not change before the bowling, improve the liquid discharge capacity one by one, the range of improving every time is 0.1 cube, every time improves the discharge capacity and throws the ball, the input quantity is 32 ~ 48, until the manometer pressure value after the first appears throwing is higher than the manometer pressure value before the bowling, stop the pump, record discharge capacity Q this moment32(ii) a Opening the pressure relief valve to relieve pressure, unscrewing the sleeve plug 10, closing the pressure relief valve, unscrewing the pump-in pipeline and the connector 8, sequentially unscrewing the No. 1-2 water absorption control pipe 4 and the No. 1-2 perforated sleeve 9, sequentially connecting the pump-in pipeline to the liquid outlet of the No. 1-2 perforated sleeve 9, opening the electric plunger pump 2 to reversely inject liquid with the displacement of 0.2 cubic/minute, and removing the plugging ball in the test hole 11 of the No. 1-2 perforated sleeve 9. Stopping the pump, screwing the sleeve plug 10, and reconnecting the pumping pipeline with the connector 8, the No. 1-No. 2 water absorption control pipe 4 and the No. 1-No. 2 perforated sleeve 9.
Thirdly, opening the valve on the No. 1 to No. 3 water absorption capacity control pipe 4, closing the pressure release valve and openingStarting the electric plunger pump 2, adjusting the liquid discharge capacity to be 0.1 cubic/minute, recording the pressure value of the pressure gauge, putting 48-72 blocking balls into the water tank 1, observing the pressure of the pressure gauge, gradually increasing the liquid discharge capacity if the pressure value before and after ball throwing is unchanged, increasing the amplitude to be 0.1 cubic each time, throwing balls once when increasing the discharge capacity once, wherein the input quantity is 48-72, the pressure value of the pressure gauge after ball throwing is higher than the pressure value of the pressure gauge before ball throwing until the pressure value of the pressure gauge after ball throwing appears for the first time, stopping the pump, recording the discharge capacity Q at the moment, and stopping48(ii) a Opening the pressure relief valve to relieve pressure, unscrewing the sleeve plug 10, closing the pressure relief valve, unscrewing the pump-in pipeline and the connector 8, sequentially unscrewing the No. 1-3 water absorption control tubes 4 and the No. 1-3 perforated sleeves 9, sequentially connecting the pump-in pipeline to the liquid outlet of the No. 1-3 perforated sleeves 9, opening the electric plunger pump 2 to reversely inject liquid with the displacement of 0.2 cubic/minute, and removing the plugging balls in the test holes 11 of the No. 1-2 perforated sleeves 9. Stopping the pump, screwing the sleeve plug 10, and reconnecting the pumping pipeline with the connector 8, the No. 1-No. 3 water absorption control pipe 4 and the No. 1-No. 3 perforated sleeve 9.
Fourthly, opening an opening and closing valve on a No. 1-4 water absorption control pipe 4, closing a pressure release valve, opening an electric plunger pump 2, adjusting the liquid discharge capacity to be 0.1 cubic/minute, recording the pressure value of a pressure gauge, putting 64-96 blocking balls into a water tank 1, observing the pressure of the pressure gauge, gradually increasing the liquid discharge capacity if the pressure values before and after pitching are unchanged, increasing the amplitude to be 0.1 cubic each time, pitching once every time the discharge capacity is increased, putting 64-96 balls until the pressure value of the pressure gauge after pitching is higher than the pressure value of the pressure gauge before pitching for the first time, stopping the pump, recording the discharge capacity Q at the moment64(ii) a Opening the pressure relief valve to relieve pressure, unscrewing the sleeve plug 10, closing the pressure relief valve, unscrewing the pump-in pipeline and the connector 8, sequentially unscrewing the No. 1-4 water absorption control pipe 4 and the No. 1-4 perforated sleeve 9, sequentially connecting the pump-in pipeline to the liquid outlet of the No. 1-4 perforated sleeve 9, opening the electric plunger pump 2 to reversely inject liquid with the displacement of 0.2 cubic per minute, and removing the plugging ball in the test hole 11 of the No. 1-4 perforated sleeve 9. Stopping the pump, screwing the sleeve plug 10, and reconnecting the pumping pipeline with the connector 8, the No. 1-No. 4 water absorption control pipe 4 and the No. 1-No. 4 perforated sleeve 9.
3. Testing the influence of the difference of the water absorption capacity of the reservoir on the plugging position of the plugging ball, only opening the opening and closing valves on the No. 1 and No. 4 water absorption capacity control pipes 4, and setting the liquid discharge capacity to be Q by using a frequency converter32Starting the pump, adjusting the opening degrees of the throttle valve No. 1 and the throttle valve No. 4 to ensure that the numerical ratio of the flow meter No. 1 to the flow meter No. 4 appears in five working conditions of 1:9, 2:8, 3:7, 4:6 and 1:1, respectively throwing 24 blocking balls into the water tank under the five working conditions, recording the flow value change process of the flow meter No. 1 and the flow meter No. 4 after all the blocking balls enter the pipeline, stopping the pump, opening a pressure release valve to release pressure, unscrewing a sleeve plug 10, closing the pressure release valve, unscrewing a pumping pipeline and a connector 8, sequentially unscrewing a water absorption control pipe No. 1 and a water absorption control pipe No. 4 and a hole-opening sleeve 9 No. 1 and a hole-opening sleeve 9 at the connecting positions, sequentially connecting the pumping pipeline to the liquid outlets of the hole-opening sleeve 9 No. 1 and the hole-opening sleeve 9, starting an electric plunger pump 2 to reversely inject liquid at the discharge rate of 0.2 cubic/min, respectively removing and collecting the blocking balls at the test holes 11 of the hole-, the influence of the difference of the water absorption capacity of the reservoir on the plugging position of the plugging ball is analyzed by comprehensively analyzing the change conditions of the flow values of the No. 1 flowmeter and the No. 4 flowmeter before and after ball throwing and comparing the distribution conditions of the plugging ball in the No. 1 and No. 4 perforated casing test holes.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides a shutoff ball mechanical plugging experimental apparatus which characterized in that includes:
the device comprises a water tank, a water feeding pipeline, a plunger pump, a pressure gauge, a pressure relief device, a pumping pipeline, a metal experiment pipe column and at least two water absorption amount control pipelines;
wherein the water tank is used for containing experimental liquid;
the water tank is connected with the plunger pump through the water feeding pipeline;
the plunger pump is connected with the metal experiment tubular column through the pumping pipeline;
the pumping pipeline is provided with the pressure gauge and the pressure relief device;
the metal experiment tubular column is sequentially provided with a joint, at least two perforated sleeves and a sleeve plug;
the perforated sleeves correspond to the water absorption amount control pipelines one by one;
the perforated sleeve is connected with one end of the water absorption capacity control pipeline corresponding to the perforated sleeve through a liquid outlet;
each water absorption control pipeline is provided with an opening and closing valve, a flowmeter and a throttle valve;
the other end of each water absorption amount control pipeline is connected with the water tank;
each perforated sleeve consists of an outer side wall and an inner side wall;
a cavity is formed between the inner side wall and the outer side wall;
a test hole is formed in the inner side wall;
the outer side wall is provided with the liquid outlet.
2. The apparatus of claim 1, wherein the pressure relief device comprises:
the pressure relief valve and the pressure relief pipe; wherein,
the pressure relief valve is arranged on the pressure relief pipe;
the pressure relief pipe is connected with the pump pumping pipeline.
3. The apparatus of claim 2,
the pressure relief pipe is connected with the pump pumping pipeline through a three-way device.
4. The device according to any one of claims 1 to 3,
the cavity is filled with filter materials.
5. The apparatus of claim 4,
the filter material is formed by sintering metal particles.
6. The device according to any one of claims 1 to 3,
the test holes are spirally distributed on the inner side wall.
7. The apparatus of claim 6,
the test holes are distributed on a spiral line with a spiral angle of 60 degrees.
8. The apparatus of claim 7,
the distribution density of the test holes is 16 per meter.
9. The device according to any one of claims 1 to 3,
the plunger pump is an electric plunger pump;
the motor of the electric plunger pump is connected with a frequency converter;
the frequency converter controls a motor of the electric plunger pump.
10. The device according to any one of claims 1 to 3,
the number of the water absorption amount control pipelines is four.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420675398.4U CN204252993U (en) | 2014-11-05 | 2014-11-05 | Mechanical plugging experimental device for plugging ball |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420675398.4U CN204252993U (en) | 2014-11-05 | 2014-11-05 | Mechanical plugging experimental device for plugging ball |
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| CN204252993U true CN204252993U (en) | 2015-04-08 |
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| CN201420675398.4U Expired - Fee Related CN204252993U (en) | 2014-11-05 | 2014-11-05 | Mechanical plugging experimental device for plugging ball |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113159A (en) * | 2018-10-11 | 2019-01-01 | 盐城道泽环保科技有限公司 | A kind of reverse-flow type exempts from automatically controlling liquid transportation integration apparatus |
| CN110284866A (en) * | 2019-07-23 | 2019-09-27 | 中国矿业大学(北京) | A kind of shale fracturing device and method |
| CN110608019A (en) * | 2019-10-21 | 2019-12-24 | 中国石油化工股份有限公司 | Steering separate-layer fracturing experiment simulation device and using method thereof |
| CN111024525A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Temporary plugging ball evaluation device and method for testing temporary plugging ball plugging performance by using same |
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2014
- 2014-11-05 CN CN201420675398.4U patent/CN204252993U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024525A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Temporary plugging ball evaluation device and method for testing temporary plugging ball plugging performance by using same |
| CN109113159A (en) * | 2018-10-11 | 2019-01-01 | 盐城道泽环保科技有限公司 | A kind of reverse-flow type exempts from automatically controlling liquid transportation integration apparatus |
| CN110284866A (en) * | 2019-07-23 | 2019-09-27 | 中国矿业大学(北京) | A kind of shale fracturing device and method |
| CN110284866B (en) * | 2019-07-23 | 2024-02-09 | 中国矿业大学(北京) | Shale fracturing device and method |
| CN110608019A (en) * | 2019-10-21 | 2019-12-24 | 中国石油化工股份有限公司 | Steering separate-layer fracturing experiment simulation device and using method thereof |
| CN110608019B (en) * | 2019-10-21 | 2021-09-28 | 中国石油化工股份有限公司 | Steering separate-layer fracturing experiment simulation device and using method thereof |
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