CN109113687B - Sand filling pipe device for simulating rock core and filling method - Google Patents
Sand filling pipe device for simulating rock core and filling method Download PDFInfo
- Publication number
- CN109113687B CN109113687B CN201710497409.2A CN201710497409A CN109113687B CN 109113687 B CN109113687 B CN 109113687B CN 201710497409 A CN201710497409 A CN 201710497409A CN 109113687 B CN109113687 B CN 109113687B
- Authority
- CN
- China
- Prior art keywords
- sand
- quartz sand
- pipe
- filling pipe
- sand layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004576 sand Substances 0.000 title claims abstract description 157
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000011435 rock Substances 0.000 title claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 287
- 239000006004 Quartz sand Substances 0.000 claims abstract description 131
- 238000007789 sealing Methods 0.000 claims description 64
- 239000012530 fluid Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 14
- 238000006073 displacement reaction Methods 0.000 abstract description 12
- 238000010008 shearing Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 8
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 230000035699 permeability Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a sand filling pipe device for simulating a rock core and a filling method, and belongs to the technical field of oil field enhanced oil recovery. The sand filling pipe device for simulating the rock core is characterized in that a pipe section which extends outwards from one end of the pipe column body and has gradually increased pipe diameter is arranged on the pipe column body of the sand filling pipe, first quartz sand with a first preset mesh number, second quartz sand with a second preset mesh number and third quartz sand with a third preset mesh number are sequentially filled in the pipe section, a first quartz sand layer, a second quartz sand layer and a third quartz sand layer are formed, stratum sand is filled in the pipe column body, a stratum sand layer is formed, an interface is formed between the stratum sand layer and the third quartz sand layer, the formed first quartz sand layer, the second quartz sand layer and the third quartz sand layer can be used for replacing a compact screen, the interface replaces the end face of the sand filling pipe, the blocking and shearing of continuous gel in the continuous gel injection process are reduced, and the displacement and the continuous gel effect are improved.
Description
Technical Field
The invention belongs to the technical field of enhanced oil recovery of oil fields, and particularly relates to a sand filling pipe device for simulating a rock core and a filling method.
Background
The core displacement experiment of the sand filling pipe is a method for improving recovery ratio, which is commonly used in China at present, the method can be used for carrying out the core displacement experiment in a mode of approximately simulating parameters such as stratum permeability, porosity and the like of an experimental area, stratum sand in the core of the sand filling pipe can be taken out and then refilled again after the experiment is completed, and the experiment cost is saved.
At present, a conventional sand filling pipe device for simulating a rock core is of a straight cylinder type, compact filter screens are arranged on two end faces of the sand filling pipe device for simulating the rock core in order to prevent stratum sand from overflowing, parameters such as permeability, porosity and the like of the stratum are approximately simulated by adopting a sand filling compaction method, and a rock core displacement experiment is carried out.
In carrying out the invention, the present inventors have found that there are at least the following problems in the prior art:
in the continuous gel displacement process, the existing sand filling pipe device for simulating the core can not simulate the actual injection condition because of end face blockage caused by the existence of a compact screen, and meanwhile, the existence of the screen can cause serious shearing to the continuous gel, so that the displacement and blocking effects of the continuous gel are reduced, a certain difference exists between an experimental result and the actual injection, and the problem of end face blockage and shearing is solved by a set of sand filling pipe core filling method which is simple and convenient in process and easy to operate.
Disclosure of Invention
In view of the above, the present invention provides a sand filling pipe device and a filling method for simulating a core, which are used for reducing the blocking and shearing of the sand filling pipe end to continuous gel.
Specifically, the method comprises the following technical scheme:
in one aspect, a sand-filling pipe device for simulating a core comprises a sealing cover and a sand-filling pipe, wherein,
The sealing cover comprises a first sealing cover and a second sealing cover, the first sealing cover is sleeved at the first end of the sand filling pipe, and the second sealing cover is sleeved at the second end of the sand filling pipe;
The first sealing cover is provided with a first through hole for injecting fluid into the sand filling pipe;
the second sealing cover is provided with a second through hole for discharging the fluid in the sand filling pipe,
The sand filling pipe comprises a pipe column body and a pipe section which extends outwards from one end of the pipe column body and gradually increases in pipe diameter, a port of the pipe section is a first end of the sand filling pipe, the pipe column body is suitable for filling stratum sand, and the pipe section is suitable for filling a plurality of quartz sand layers with sequentially increased mesh numbers from the first end.
Further, the first sealing cover comprises a first cover surface and a first cover edge extending from the edge of the first cover surface to the direction perpendicular to the direction of the first cover surface, a first groove is formed in the inner wall of the first cover edge, and a first sealing ring is arranged in the first groove.
Further, the second sealing cover comprises a second cover surface and a second cover edge extending from the edge of the second cover surface to the direction perpendicular to the direction of the second cover surface, a second groove is formed in the inner wall of the second cover edge, and the second sealing ring is arranged in the second groove.
Further, the area of the first cover surface is larger than the area of the second cover surface.
Further, a first external thread is arranged on the outer side of the first end of the sand filling pipe, a first internal thread is arranged on the inner wall of the first sealing cover, and the first internal thread is suitable for being matched with the first external thread.
Further, a second external thread is arranged on the outer side of the second end of the sand filling pipe, a second internal thread is arranged on the inner wall of the second sealing cover, and the second internal thread is suitable for being matched with the second external thread.
Further, the length of the pipe column body is 250-350mm, and the length of the pipe section is 25-35mm.
On the other hand, a filling method of a sand filling pipe of a simulated rock core, based on the sand filling pipe device of the simulated rock core, comprises the following steps:
Connecting and sealing the first sealing cover with the first end of the sand filling pipe;
Injecting first quartz sand with a first preset mesh number into the sand filling pipe from the second end of the sand filling pipe, and pressing the first quartz sand into a first quartz sand layer;
injecting second quartz sand with a second preset mesh number into the sand filling pipe from the second end of the sand filling pipe, and pressing the second quartz sand into a second quartz sand layer positioned on the first quartz sand layer;
Injecting third quartz sand with a third preset mesh number into the sand filling pipe from the second end of the sand filling pipe, and pressing the third quartz sand into a third quartz sand layer positioned on the second quartz sand layer;
Injecting formation sand into the sand filling pipe from the second end of the sand filling pipe, pressing into a formation sand layer positioned on the third quartz sand layer,
Wherein the first, second and third quartz sand layers are located within the pipe section; the first preset mesh number is smaller than the second preset mesh number, the second preset mesh number is smaller than the third preset mesh number, and the third preset mesh number is smaller than the mesh number of the stratum sand.
Further, the interface of the third quartz sand layer and the stratum sand layer is positioned at the interface of the tubular column body and the tubular section.
Further, one or more quartz sand layers with the mesh number increased from bottom to top are further arranged on the third quartz sand layer.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
The pipe section which extends outwards from one end of the pipe column body and has gradually increased pipe diameter is arranged on the pipe column body of the sand filling pipe, first quartz sand with a first preset mesh number, second quartz sand with a second preset mesh number and third quartz sand with a third preset mesh number are sequentially filled in the pipe section, a first quartz sand layer, a second quartz sand layer and a third quartz sand layer are formed, stratum sand is filled in the pipe column body, a stratum sand layer is formed, an interface is formed between the stratum sand layer and the third quartz sand layer, the formed first quartz sand layer, the second quartz sand layer and the third quartz sand layer replace a dense screen, the interface replaces the end face of the sand filling pipe, the blocking and shearing of continuous gel in the continuous gel injection process are reduced, and the displacement and blocking effects of the continuous gel are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a sand-filling pipe device for simulating a core according to an embodiment of the present invention;
Fig. 2 is a flow chart of a method for filling a sand filling pipe simulating a core according to an embodiment of the invention.
Reference numerals in the drawings denote:
1. a first sealing cover;
1-1, a first through hole;
2. A sand filling pipe;
2-1, a tubular column body;
2-2, pipe sections;
3. A second sealing cover;
3-1, a second through hole.
Detailed Description
In order to make the technical scheme and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
The embodiment of the invention provides a sand filling pipe device for simulating a rock core, the structural schematic diagram of which is shown in figure 1, and mainly comprises a sealing cover and a sand filling pipe 2, wherein,
The sealing cover comprises a first sealing cover 1 and a second sealing cover 3, the first sealing cover 1 is sleeved at the first end of the sand filling pipe 2, and the second sealing cover 3 is sleeved at the second end of the sand filling pipe 2;
the first sealing cover 1 is provided with a first through hole 1-1 for injecting fluid into the sand filling pipe 2;
the second sealing cover 3 is provided with a second through hole 3-1 for discharging the fluid in the sand filling pipe 2,
The sand filling pipe 2 comprises a pipe column body 2-1 and a pipe section 2-2 which extends outwards from one end of the pipe column body 2-1 and has gradually increased pipe diameter, the port of the pipe section 2-2 is a first end of the sand filling pipe 2, the pipe column body 2-1 is suitable for filling stratum sand, and the pipe section 2-2 is suitable for filling a plurality of quartz sand layers with sequentially increased mesh numbers from the first end.
Therefore, compared with the sand filling pipe device of the original simulated rock core, the sand filling pipe 2 of the sand filling pipe device of the simulated rock core not only comprises the pipe column body 2-1, but also comprises the pipe section 2-2 which extends outwards from one end of the pipe column body 2-1 and gradually increases in pipe diameter, a plurality of quartz sand with preset mesh numbers is filled in the pipe section 2-2, a plurality of quartz sand layers are formed to replace a compact screen, the flow area of continuous gel is enlarged, the blocking and shearing of the continuous gel in the continuous gel injection process are further reduced, and the displacement and blocking effects of the continuous gel are improved.
In the sand filling pipe device for simulating the rock core according to the embodiment of the invention, the pipe column body 2-1 is preferably a circular pipe column, and the pipe section 2-2 is preferably in a circular truncated cone shape.
In the sand filling pipe device for simulating the rock core of the embodiment of the invention, the first sealing cover 1 comprises a first cover surface and a first cover edge extending from the edge of the first cover surface to the direction perpendicular to the direction of the first cover surface, a first groove is formed in the inner wall of the first cover edge, and a first sealing ring is arranged in the first groove and used for ensuring tight sealing between the first sealing cover 1 and the first end of the sand filling pipe 2.
In the sand filling pipe device for simulating the rock core of the embodiment of the invention, the second sealing cover 3 comprises a second cover surface and a second cover edge extending from the edge of the second cover surface to the direction perpendicular to the direction of the second cover surface, a second groove is formed in the inner wall of the second cover edge, and a second sealing ring is arranged in the second groove and used for ensuring the tight sealing between the second sealing cover 3 and the second end of the sand filling pipe 2.
In the sand filling pipe device for simulating the rock core, the first cover surface and the second cover surface can be circular, and the area of the first cover surface is larger than that of the second cover surface.
It should be noted that the inner diameter of the first cover surface may be 60mm, and the inner diameter of the second cover surface may be 30mm.
In the sand filling pipe device for simulating the rock core, provided by the embodiment of the invention, the outer side of the first end of the sand filling pipe 2 is provided with the first external thread, the inner wall of the first sealing cover 1 is provided with the first internal thread, and the first internal thread is suitable for being matched with the first external thread and is used for connecting the first end of the sand filling pipe 2 with the first sealing cover 1.
In the sand filling pipe device for simulating the rock core, a second external thread is arranged on the outer side of the second end of the sand filling pipe 2, a second internal thread is arranged on the inner wall of the second sealing cover 3, and the second internal thread is suitable for being matched with the second external thread and is used for connecting the second end of the sand filling pipe 2 with the second sealing cover 3.
In the sand filling pipe device of the simulated rock core, which is disclosed by the embodiment of the invention, the sand filling pipe device of the simulated rock core further comprises a first hole plug and a second hole plug, wherein the first hole plug is suitable for plugging the first through hole 1-1, and the second hole plug is suitable for plugging the second through hole 3-1, so that quartz sand with different preset meshes cannot flow out of the first through hole 1-1 or the second through hole 3-1 when the sand filling pipe 2 is filled.
In the sand filling pipe device for simulating the rock core, the length of the pipe column body 2-1 is 250-350mm, preferably 300mm; the length of the tube section 2-2 has a value in the range of 25-35mm, preferably 30mm.
According to the sand filling pipe device for simulating the rock core, provided by the embodiment of the invention, the pipe section 2-2 which extends outwards from one end of the pipe column body 2-1 and gradually increases in pipe diameter is arranged on the pipe column body 2-1 of the sand filling pipe 2, a plurality of quartz sand with preset mesh numbers can be filled in the pipe section 2-2, a plurality of quartz sand layers are formed to replace a compact screen, the flow area of continuous gel is enlarged, the blocking and shearing of the continuous gel in the continuous gel injection process are further reduced, and the displacement and blocking effects of the continuous gel are improved.
Example two
The embodiment of the invention provides a filling method of a sand filling pipe of a simulated rock core, which is based on a sand filling pipe device of the simulated rock core, and can be applied to scenes with different regional conditions, in the embodiment, a Gangxi three region and a Gangdong one region are mainly taken as examples, a flow chart of the method is shown in fig. 2, and the method is as follows:
Step 101: and connecting and sealing the first sealing cover with the first end of the sand filling pipe.
Specifically, the first sealing cover is aligned with the first end of the sand filling pipe and rotated, and meanwhile, the first through hole is plugged into the first through hole, so that tight sealing between the first sealing cover and the sand filling pipe is ensured, and the inside of the sand filling pipe is ensured not to be communicated with the outside.
Step 102: and injecting first quartz sand with a first preset mesh number into the sand filling pipe from the second end of the sand filling pipe, and pressing into a first quartz sand layer.
When the scene is in a Gangxi three-region, the first quartz sand with the first preset mesh number can be 70 mesh quartz sand, the filling height can be one third of the length of the pipe section and can be 10mm, and a compactor is used for compacting the first quartz sand, so that a first quartz sand layer is formed;
When the scene is Gangdong a zone, the first quartz sand with the first preset mesh number can be 50 mesh quartz sand, the filling height is one third of the length of the pipe section and can be 10mm, and a compactor is used for compacting the first quartz sand, so that a first quartz sand layer is formed.
Step 103: and injecting second quartz sand with a second preset mesh number into the sand filling pipe from the second end of the sand filling pipe, and pressing the second quartz sand into a second quartz sand layer positioned on the first quartz sand layer.
When the scene is a Gangxi three-region, the second quartz sand with the second preset mesh number can be 100-mesh quartz sand, the filling height is one third of the length of the pipe section and can be 10mm, and a compactor is used for compacting the second quartz sand to form a second quartz sand layer;
When the scene is Gangdong a zone, the second quartz sand with the second preset mesh number can be 70 mesh quartz sand, the filling height is one third of the length of the pipe section and can be 10mm, and a compactor is used for compacting the second quartz sand, so that a second quartz sand layer is formed.
Step 104: and injecting third quartz sand with a third preset mesh number into the sand filling pipe from the second end of the sand filling pipe, and pressing into a third quartz sand layer positioned on the second quartz sand layer.
When the scene is a Gangxi three-region, the second quartz sand with the third preset mesh number can be 140 mesh quartz sand, the filling height is one third of the length of the pipe section and can be 10mm, and a compactor is used for compacting the second quartz sand to form a third quartz sand layer;
when the scene is Gangdong a zone, the third quartz sand with the third preset mesh number can be 100 mesh quartz sand, the filling height is one third of the length of the pipe section and can be 10mm, and a compactor is used for compacting the third quartz sand, so that a third quartz sand layer is formed.
At this time, the first, second and third quartz sand layers are located in the pipe section, i.e., the pipe section is filled with the first, second and third quartz sand layers, as shown in fig. 2.
Step 105: and injecting stratum sand into the sand filling pipe from the second end of the sand filling pipe, and pressing the stratum sand into a stratum sand layer positioned on the third quartz sand layer.
In the step, stratum sand is filled in the tubular column body, so that the interface between the third quartz sand layer and the stratum sand layer is ensured to be positioned at the interface between the tubular column body and the pipe section; meanwhile, the third quartz sand layer may be further provided with one or more quartz sand layers with the number increasing from bottom to top, and those skilled in the art will understand that it is within the scope of the present invention to use more than three quartz sand layers in different embodiments.
The mesh number refers to the granularity or thickness of the material, and the general definition refers to the number of holes of a screen within 1 square inch, and the larger the mesh number is, the finer the granularity of the material is; the smaller the mesh number, the larger the material granularity, so the first preset mesh number is smaller than the second preset mesh number, the second preset mesh number is smaller than the third preset mesh number, and the third preset mesh number is smaller than the mesh number of stratum sand.
And when the scene is the Gangxi three region, gradually filling stratum sand in the Gangxi three region into the sand filling pipe, and compacting the stratum sand by using a compactor every 10mm until the stratum sand is filled in the pipe column body.
When the scene is Gangdong one area, stratum sand in Gangdong one area is gradually filled into the sand filling pipe, and the stratum sand is compacted by a compactor every 10mm, until the stratum sand is filled in the pipe column body.
In the actual use process, after the rock core is filled according to the steps, connecting and sealing the second sealing cover with the second end of the sand filling pipe, measuring the porosity and the permeability of the simulated rock core after filling, and carrying out vacuumizing and saturated water treatment under the condition that the first through hole and the second through hole are ensured to be communicated with the inside of the sand filling pipe to respectively obtain the permeability and the porosity of the sand filling pipe rock core of the simulated Gangxi three region and the permeability and the porosity of the sand filling pipe rock core of the Gangdong first region, so that the permeability of the Gangxi three region can be 1500mD, the error value range is +/-200 mD, the porosity can be 30%, and the error value range is +/-3%; the permeability of Gangdong a zone can be 3500mD, the error value range is + -200 mD, the porosity can be 32%, and the error value range is + -3%. And if the measured values of the porosity and the permeability are not in the preset error value range, refilling until the parameters of the porosity and the permeability are in the set value range.
After confirming that the core meets the experimental criteria, 400mL of a continuous gel system of 0.4% polyacrylamide (molecular weight 2000 ten thousand, degree of hydrolysis 18%) and 0.4% phenolic resin was prepared and the solution was placed in an intermediate container with a piston.
And connecting an experimental flow and starting a displacement pump to inject the continuous gel in the intermediate container into the sand filling pipe device of the filled simulated rock core, taking out the continuous gel of the rock core passing through the sand filling pipe from the second through hole, and stopping the experiment until the continuous gel in the intermediate container is displaced.
Verifying rationality of the filling method by calculating end face blockage of the simulated rock core and shear drop degree of the continuous gel after stopping the experiment, specifically, opening the rock core after the end face blockage is calculated, respectively taking out and weighing the continuous gel remained at the inlet end of the filling method in the prior art and the filling method in the invention, subtracting the weight of the residual continuous gel in the filling method in the invention from the weight of the residual continuous gel in the filling method in the prior art, and dividing the weight of the residual continuous gel in the filling method in the prior art; the shear drop calculation is performed by taking out the continuous gel sheared by the prior art filling method and the filling method of the invention, respectively, and measuring the viscosity of the continuous gel sheared by the two methods, subtracting the viscosity value of the continuous gel sheared by the filling method of the invention from the viscosity value of the continuous gel sheared by the filling method of the prior art, and dividing the viscosity value of the continuous gel sheared by the filling method of the invention.
When the scene is in a Gangxi three-region, the blocking of the rear end face of the simulated rock core by using the filling method is reduced by 90%, and the shearing of continuous gel is reduced by 95%; when the scene is Gangdong three areas, the blocking of the rear end face of the simulated rock core by using the filling method is reduced by 93%, and the shearing of the continuous gel is reduced by 96%, which indicates that the filling method of the invention obviously improves the displacement and blocking effects of the continuous gel.
According to the embodiment of the invention, the pipe section which extends outwards from one end of the pipe column body and has gradually increased pipe diameter is arranged on the pipe column body of the sand filling pipe, the first quartz sand with the first preset mesh number, the second quartz sand with the second preset mesh number and the third quartz sand with the third preset mesh number are sequentially filled in the pipe section to form the first quartz sand layer, the second quartz sand layer and the third quartz sand layer, stratum sand is filled in the pipe column body to form the stratum sand layer, an interface is formed between the stratum sand layer and the third quartz sand layer, the formed first quartz sand layer, the second quartz sand layer and the third quartz sand layer can be used for replacing a dense screen, the end face of the sand filling pipe is replaced by the interface, the blocking and shearing of continuous gel in the continuous gel injection process are reduced, and the displacement and blocking effects of the continuous gel are improved.
The foregoing description is only for the convenience of those skilled in the art to understand the technical solution of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The sand filling pipe device for simulating the rock core is characterized by comprising a sealing cover and a sand filling pipe, wherein,
The sealing cover comprises a first sealing cover and a second sealing cover, the first sealing cover is sleeved at the first end of the sand filling pipe, and the second sealing cover is sleeved at the second end of the sand filling pipe;
The first sealing cover is provided with a first through hole for injecting fluid into the sand filling pipe;
The second sealing cover is provided with a second through hole for discharging fluid in the sand filling pipe;
The first sealing cover comprises a first cover surface, the second sealing cover comprises a second cover surface, and the area of the first cover surface is larger than that of the second cover surface;
The sand filling pipe comprises a pipe column body and a pipe section which extends outwards from one end of the pipe column body and has gradually increased pipe diameter, the port of the pipe section is a first end of the sand filling pipe, the pipe column body is suitable for filling stratum sand to form stratum sand layers, the pipe section is suitable for filling a plurality of quartz sand layers with sequentially increased numbers from the first end, the plurality of quartz sand layers comprise a first quartz sand layer formed by quartz sand with a first preset number, a second quartz sand layer formed by quartz sand with a second preset number and a third quartz sand layer formed by quartz sand with a third preset number, the first quartz sand layer, the second quartz sand layer and the third quartz sand layer are sequentially arranged along the direction from the first end to the second end, the third quartz sand layer and the stratum sand layer are positioned at the boundary of the pipe section, one or more interfaces with the numbers from the lower to the upper end are further arranged on the third quartz sand layer, the first quartz sand layer or the third quartz sand layer is/are preset with the preset numbers from the lower to the first quartz sand layer, and the third quartz sand layer is/are smaller than the preset numbers of the first quartz sand layer and the third quartz sand layer.
2. The simulated core sand filling pipe device of claim 1, wherein the first sealing cover further comprises a first cover rim extending from the first cover rim in a direction perpendicular to the first cover rim, a first groove is formed in an inner wall of the first cover rim, and a first sealing ring is disposed in the first groove.
3. The simulated core sand filling pipe device of claim 2, wherein the second sealing cover further comprises a second cover edge extending from the second cover edge to a direction perpendicular to the second cover direction, a second groove is formed in an inner wall of the second cover edge, and a second sealing ring is arranged in the second groove.
4. The simulated core sand filling pipe device of claim 1, wherein a first external thread is provided on the outside of the first end of the sand filling pipe, a first internal thread is provided on the inner wall of the first sealing cover, and the first internal thread is adapted to mate with the first external thread.
5. The simulated core sand filling pipe device of claim 1, wherein a second external thread is provided on the outside of the second end of said sand filling pipe, and a second internal thread is provided on the inside wall of said second sealing cap, said second internal thread being adapted to mate with said second external thread.
6. The simulated core sand filling pipe device of claim 1, wherein the pipe string body has a length ranging from 250 mm to 350mm and the pipe section has a length ranging from 25 mm to 35mm.
7. A method of filling a sand-filled pipe of a simulated core based on the sand-filled pipe apparatus of the simulated core according to any one of claims 1 to 6, the sand-filled pipe apparatus of the simulated core comprising a sealing cover and a sand-filled pipe, the sand-filled pipe comprising a pipe string body and a pipe section extending outwardly from one end of the pipe string body and having a gradually increasing pipe diameter, the method comprising:
Connecting and sealing the first sealing cover with the first end of the sand filling pipe;
Injecting first quartz sand with a first preset mesh number into the sand filling pipe from the second end of the sand filling pipe, and pressing the first quartz sand into a first quartz sand layer;
injecting second quartz sand with a second preset mesh number into the sand filling pipe from the second end of the sand filling pipe, and pressing the second quartz sand into a second quartz sand layer positioned on the first quartz sand layer;
Injecting third quartz sand with a third preset mesh number into the sand filling pipe from the second end of the sand filling pipe, and pressing the third quartz sand into a third quartz sand layer positioned on the second quartz sand layer;
Injecting formation sand into the sand filling pipe from the second end of the sand filling pipe, pressing into a formation sand layer positioned on the third quartz sand layer,
Wherein the first, second and third quartz sand layers are located within the pipe section; the first quartz sand layer, the second quartz sand layer and the third quartz sand layer are sequentially arranged along the direction from the first end to the second end, the interface between the third quartz sand layer and the stratum sand layer is positioned at the boundary between the tubular column body and the tubular section, and one or more quartz sand with the mesh number increased from bottom to top is further arranged on the third quartz sand layer; the first preset mesh number is smaller than the second preset mesh number, the second preset mesh number is smaller than the third preset mesh number, and the third preset mesh number is smaller than the mesh number of the stratum sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497409.2A CN109113687B (en) | 2017-06-26 | 2017-06-26 | Sand filling pipe device for simulating rock core and filling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497409.2A CN109113687B (en) | 2017-06-26 | 2017-06-26 | Sand filling pipe device for simulating rock core and filling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109113687A CN109113687A (en) | 2019-01-01 |
| CN109113687B true CN109113687B (en) | 2024-05-28 |
Family
ID=64821763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710497409.2A Active CN109113687B (en) | 2017-06-26 | 2017-06-26 | Sand filling pipe device for simulating rock core and filling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109113687B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155991B (en) * | 2020-02-25 | 2023-06-27 | 东北石油大学 | Separable double-layer pressure-resistant sand filling pipe for simulating interlayer cementing difference stratum and simulation method |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672031A (en) * | 2009-09-24 | 2010-03-17 | 中交一航局第四工程有限公司 | Construction method of meshy drainage mat for replacing overspread sand mat |
| CN102042013A (en) * | 2010-12-14 | 2011-05-04 | 中国海洋石油总公司 | Near wellbore area cutting simulation device for combined cylinder body with three layers of compacted sand bodies |
| CN102042014A (en) * | 2010-12-14 | 2011-05-04 | 中国海洋石油总公司 | Multistage-cylinder near well-bore zone shearing simulation device with three layers of compacted sand bodies |
| CN102052071A (en) * | 2010-12-14 | 2011-05-11 | 中国海洋石油总公司 | Frustum cylinder-shaped near wellbore zone shear simulation device with sand prevention compacted sand bodies |
| CN102052072A (en) * | 2010-12-14 | 2011-05-11 | 中国海洋石油总公司 | Sand-filled pipe device simulating two-dimensional drill core and provided with circular truncated cone shaped cylinder body |
| CN102116149A (en) * | 2010-12-14 | 2011-07-06 | 中国海洋石油总公司 | Round-table-barrel-shaped near-well-bore shear simulating device with three layers of compaction sand bodies |
| CN102121380A (en) * | 2010-12-14 | 2011-07-13 | 中国海洋石油总公司 | Combined cylindrical barrel near wellbore area shear simulation device |
| CN202064939U (en) * | 2010-12-14 | 2011-12-07 | 中国海洋石油总公司 | Cylindrical round table near well area simulation device provided with three-layer compaction sand body |
| CN102704913A (en) * | 2012-06-15 | 2012-10-03 | 中国石油天然气股份有限公司 | Experimental device and method for simulating exhaustion production of gas-containing thickened oil by utilizing tapered sand filling pipe |
| CN202671317U (en) * | 2012-06-30 | 2013-01-16 | 常州市开源水处理科技有限公司 | Reverse osmosis treatment equipment with three-layer quartz sand filter |
| CN103510933A (en) * | 2013-09-27 | 2014-01-15 | 中国石油天然气股份有限公司 | Quantitative evaluation method of imbibition and oil production effects of imbibition agent |
| CN104777272A (en) * | 2015-04-20 | 2015-07-15 | 西南石油大学 | Secondary shearing method for testing performance parameters of oil displacing polymer solution |
| CN104777273A (en) * | 2015-04-20 | 2015-07-15 | 西南石油大学 | Third-order shear method for determining performance parameter of polymer solution for oil displacement |
| CN105201470A (en) * | 2015-09-24 | 2015-12-30 | 中国石油大学(华东) | Heterogeneous single sand-filled pipe core model and filling method thereof |
| CN105527141A (en) * | 2015-12-31 | 2016-04-27 | 中国石油天然气股份有限公司 | Sand filling pipe rock core manufacturing method |
| CA2974979A1 (en) * | 2015-02-03 | 2016-08-11 | Schlumberger Canada Limited | Multi-phase polymer apparent viscosity determination in polymer coreflood simulation study workflow |
| CN106324223A (en) * | 2016-09-30 | 2017-01-11 | 东北石油大学 | High-seepage stripe rock core model, and manufacturing method and device thereof |
| CN106501493A (en) * | 2016-11-03 | 2017-03-15 | 东北石油大学 | A kind of displacement test heterogeneous body self-constant temperature sandpack column and loading method |
| CN106501127A (en) * | 2016-10-17 | 2017-03-15 | 大港油田集团有限责任公司 | Profile control gel evaluation of dynamic method and device |
| CN206957673U (en) * | 2017-06-26 | 2018-02-02 | 中国石油天然气股份有限公司 | A kind of back-up sand pipe device of simulation core |
-
2017
- 2017-06-26 CN CN201710497409.2A patent/CN109113687B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672031A (en) * | 2009-09-24 | 2010-03-17 | 中交一航局第四工程有限公司 | Construction method of meshy drainage mat for replacing overspread sand mat |
| CN102042013A (en) * | 2010-12-14 | 2011-05-04 | 中国海洋石油总公司 | Near wellbore area cutting simulation device for combined cylinder body with three layers of compacted sand bodies |
| CN102042014A (en) * | 2010-12-14 | 2011-05-04 | 中国海洋石油总公司 | Multistage-cylinder near well-bore zone shearing simulation device with three layers of compacted sand bodies |
| CN102052071A (en) * | 2010-12-14 | 2011-05-11 | 中国海洋石油总公司 | Frustum cylinder-shaped near wellbore zone shear simulation device with sand prevention compacted sand bodies |
| CN102052072A (en) * | 2010-12-14 | 2011-05-11 | 中国海洋石油总公司 | Sand-filled pipe device simulating two-dimensional drill core and provided with circular truncated cone shaped cylinder body |
| CN102116149A (en) * | 2010-12-14 | 2011-07-06 | 中国海洋石油总公司 | Round-table-barrel-shaped near-well-bore shear simulating device with three layers of compaction sand bodies |
| CN102121380A (en) * | 2010-12-14 | 2011-07-13 | 中国海洋石油总公司 | Combined cylindrical barrel near wellbore area shear simulation device |
| CN202064939U (en) * | 2010-12-14 | 2011-12-07 | 中国海洋石油总公司 | Cylindrical round table near well area simulation device provided with three-layer compaction sand body |
| CN102704913A (en) * | 2012-06-15 | 2012-10-03 | 中国石油天然气股份有限公司 | Experimental device and method for simulating exhaustion production of gas-containing thickened oil by utilizing tapered sand filling pipe |
| CN202671317U (en) * | 2012-06-30 | 2013-01-16 | 常州市开源水处理科技有限公司 | Reverse osmosis treatment equipment with three-layer quartz sand filter |
| CN103510933A (en) * | 2013-09-27 | 2014-01-15 | 中国石油天然气股份有限公司 | Quantitative evaluation method of imbibition and oil production effects of imbibition agent |
| CA2974979A1 (en) * | 2015-02-03 | 2016-08-11 | Schlumberger Canada Limited | Multi-phase polymer apparent viscosity determination in polymer coreflood simulation study workflow |
| CN104777272A (en) * | 2015-04-20 | 2015-07-15 | 西南石油大学 | Secondary shearing method for testing performance parameters of oil displacing polymer solution |
| CN104777273A (en) * | 2015-04-20 | 2015-07-15 | 西南石油大学 | Third-order shear method for determining performance parameter of polymer solution for oil displacement |
| CN105201470A (en) * | 2015-09-24 | 2015-12-30 | 中国石油大学(华东) | Heterogeneous single sand-filled pipe core model and filling method thereof |
| CN105527141A (en) * | 2015-12-31 | 2016-04-27 | 中国石油天然气股份有限公司 | Sand filling pipe rock core manufacturing method |
| CN106324223A (en) * | 2016-09-30 | 2017-01-11 | 东北石油大学 | High-seepage stripe rock core model, and manufacturing method and device thereof |
| CN106501127A (en) * | 2016-10-17 | 2017-03-15 | 大港油田集团有限责任公司 | Profile control gel evaluation of dynamic method and device |
| CN106501493A (en) * | 2016-11-03 | 2017-03-15 | 东北石油大学 | A kind of displacement test heterogeneous body self-constant temperature sandpack column and loading method |
| CN206957673U (en) * | 2017-06-26 | 2018-02-02 | 中国石油天然气股份有限公司 | A kind of back-up sand pipe device of simulation core |
Non-Patent Citations (1)
| Title |
|---|
| PDZ-1堵剂在岩心/填砂管实验中的行为特性;牛宗奎;王斌;杜新泉;单长军;李战军;鲁书铜;;精细石油化工进展;20060531;第7卷(第05期);第8页-第11页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109113687A (en) | 2019-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105527141B (en) | Fill out sand tube Corestone manufacture method | |
| CN106869890B (en) | Horizontal well fracturing experimental method and pit shaft | |
| CN107575207A (en) | A kind of method predicted oilfield water flooding and involve radius | |
| CN102095833A (en) | Test method for intrastratal nonhomogeneous model | |
| CN105201470B (en) | A kind of heterogeneous single fill out sand tube core model and its fill and present method | |
| CN109113687B (en) | Sand filling pipe device for simulating rock core and filling method | |
| MX2010013272A (en) | Method for sealing off a water zone in a production well downhole and a sealing arrangement. | |
| CN206158727U (en) | Visual bottom water reservoir modeling develop experimental device | |
| CN209363275U (en) | It is a kind of to inject integrated well device for repairing polluted soil and the in situ of underground water | |
| CN205908286U (en) | A components of a whole that can function independently is packing sand control pipe in advance for oil gas field sand control | |
| CN104215425B (en) | A kind of re-fill method of packed type karst passage system | |
| CN206957673U (en) | A kind of back-up sand pipe device of simulation core | |
| CN103558358B (en) | Intraformational heterogeneous model interlayer crack effect detection method and system thereof | |
| CN104594369B (en) | Karst high pressure group hole replacement grouting method and its structure | |
| CN112177570A (en) | Gravel-packed sand control well extrusion packing form simulation experiment device and method | |
| CN104632130A (en) | Workover well completion process | |
| CN110631897A (en) | Multifunctional rock core holder | |
| CN103696750B (en) | Method is determined with critical gelation point in the annular space sand fracturing pipe of packer | |
| CN105089648A (en) | Device and method for nested layered injection of isotopic tracer | |
| CN112177571B (en) | Reservoir deficit sand control well gravel packing degree simulation experiment device and method | |
| CN210134809U (en) | Water-controlling oil production pipe column of screen pipe well completion horizontal well | |
| CN106759112A (en) | The manufacture method of the concrete works sealing swaging die with reinforcing fiber | |
| CN212105843U (en) | Eccentric injection allocation device with current limiting structure | |
| CN107476788A (en) | A kind of crude oil method for implanting | |
| CN102392622A (en) | Overburden pressure system for three-dimensional model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |