CN112610192B - Composite sand control pipe aiming at non-uniform sand production of stratum and well completion method - Google Patents
Composite sand control pipe aiming at non-uniform sand production of stratum and well completion method Download PDFInfo
- Publication number
- CN112610192B CN112610192B CN202011499201.2A CN202011499201A CN112610192B CN 112610192 B CN112610192 B CN 112610192B CN 202011499201 A CN202011499201 A CN 202011499201A CN 112610192 B CN112610192 B CN 112610192B
- Authority
- CN
- China
- Prior art keywords
- sand control
- driving device
- annular sealing
- central pipe
- production
- 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
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention discloses a composite sand control pipe for non-uniform sand production of a stratum, which comprises a central pipe, a wire-wound screen sleeve and a pair of fine sand control nets, wherein the central pipe is provided with a plurality of fine sand control nets; the two ends of the central pipe with the hole are connected with the threaded coupling, the wire winding screen sleeve is sleeved outside the central pipe, a pair of annular sealing outer baffle plates are arranged between the central pipe and the central pipe, the annular sealing outer baffle plates and the central pipe are fixedly connected, a closed space is formed, a pair of annular sealing inner baffle plates embedded between the central pipe and the wire winding screen sleeve are arranged in the closed space, one side, close to the central pipe, of each annular sealing inner baffle plate is provided with a groove-shaped rack, the other side is a rough surface and is in contact with the annular sealing outer baffle plates, the fine sand prevention net is of a cambered surface structure and is connected with the annular sealing inner baffle plates, and elastic telescopic sealing strips in contact with the wire winding screen sleeve are arranged at the two ends of the fine sand prevention net. The invention also provides a well completion method aiming at the non-uniform sand production of the stratum, which solves the sand production difference caused by the non-uniform stress distribution around the shaft, gives consideration to the sand control effect and the productivity and improves the comprehensive economic benefit.
Description
Technical Field
The invention relates to the technical field of oil and gas exploitation, in particular to a composite sand control pipe aiming at formation non-uniform sand production and a well completion method.
Background
The method is characterized in that the formation sand production is used as a common problem in the sandstone formation oil and gas exploitation process, the formation structure of a zone near a well bottom is damaged due to geological conditions and exploitation factors, so that the sand production is caused, and the main obstacle for improving the production speed of a conventional loose sandstone oil and gas reservoir and a natural gas hydrate reservoir is the sand production. The sand production harm is great, and sand blocking of a sand burying layer or a shaft can cause production stop, abrasion of ground and underground equipment, collapse of a well wall and damage of a casing pipe and the like, so that the sand control process technology is very important for exploitation of the oil and gas reservoirs.
According to the rock mechanics of oil and gas engineering, due to the fact that horizontal ground stress distribution in the deep stratum is not uniform, shear stress distribution of surrounding rocks of a well bore is not uniform, shear stress on the well wall in the direction of the maximum horizontal ground stress is minimum, and shear stress on the well wall in the direction of the minimum horizontal ground stress is maximum, the surrounding rocks of the near well wall near the direction of the minimum horizontal ground stress are prone to shear failure, sand production is increased, and therefore the phenomenon that sand production around the well bore is not uniform is shown. This phenomenon is common in conventional oil and gas wells, but is particularly severe for gas hydrate production due to the following:
(1) The natural gas hydrate is buried shallowly, the sedimentary layer is usually unconsolidated or semi-consolidated loose sandstone, shearing damage is easy to occur, the content of fine silt is high, and the natural gas hydrate belongs to a stratum easy to generate sand;
(2) Different from the conventional oil and gas reservoir development, the natural gas hydrate is used as a solid phase component of a reservoir and plays a role in framework support and cementation on the reservoir, and the support and cementation function disappears along with the decomposition of the natural gas hydrate in the development process, so that framework sand in the reservoir is converted into flowing sand, the mechanical strength of the reservoir is reduced, the porosity and the permeability are increased, and more serious sand production can be caused;
(3) The depressurization method is one of the main methods for researching natural gas hydrate exploitation, and promotes hydrate decomposition by reducing bottom hole pressure, but the method increases production pressure difference, leads to increase of seepage velocity and also leads to more serious sand production.
Comprehensively available, in order to enable the natural gas hydrate to enter a commercial development stage as early as possible, a good sand prevention effect needs to be achieved in the exploitation process; meanwhile, in a natural gas hydrate reservoir, the nonuniformity of horizontal ground stress distribution can cause more serious nonuniform sand production, the nonuniformity cannot be ignored, and under the condition, if a sand control tool blindly pursues a sand control effect and neglects the nonuniformity, the whole sand control mode aiming at large sand production is adopted, the phenomenon of excessive sand control can occur in a place with small sand production, the gas-liquid production is hindered, the productivity is lost, and the economic benefit is reduced. And along with the development of oil and gas exploitation, the sand prevention pipe has serious sand blocking phenomenon, the stratum stress state may also be changed to cause the change of the main sand production direction, and if the sand production direction is not processed, the conditions can cause the reduction of productivity.
The factors seriously restrict the safe and efficient exploitation of the natural gas hydrate, and the factors must be considered in a sand prevention means, but the traditional sand prevention tools and means generally have no overall differential sand prevention and cannot solve the problems, so that an effective solution tool and an effective solution method are urgently needed to solve the problem of non-uniform sand production of the stratum.
Disclosure of Invention
The invention aims to solve the problems and provides a composite sand control pipe aiming at the non-uniform sand production of the stratum and a well completion method, so that the sand production difference caused by the non-uniform stress distribution around a shaft is solved, the sand control and the productivity are both considered in the exploitation process, and the comprehensive economic benefit is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a composite sand control pipe for non-uniform sand production of a stratum is provided with a driving device in a matching way, and comprises a central pipe, a wire winding screen sleeve and a pair of fine sand control nets;
the side surface of the central pipe is provided with round holes which are arranged in an array manner, and two ends of the central pipe are connected with the threaded coupling;
the wire-winding screen sleeve is arranged outside the central pipe, a pair of annular sealing outer baffle plates are arranged between the wire-winding screen sleeve and the central pipe, one end of each annular sealing outer baffle plate is fixedly connected with the central pipe, the other end of each annular sealing outer baffle plate is fixedly connected with the wire-winding screen sleeve, an enclosed space is formed by the annular sealing outer baffle plates, the central pipe and the wire-winding screen sleeve, and a pair of annular sealing inner baffle plates are arranged in the enclosed space and are embedded between the central pipe and the wire-winding screen sleeve and can rotate along the central pipe;
meticulous sand prevention net symmetry sets up in airtight space, is connected with the sealed interior baffle of annular, and meticulous sand prevention net is the cambered surface structure of both ends perk, and both ends perk department is provided with the flexible sealing strip of elasticity, and the flexible sealing strip of elasticity contacts with wire winding screen jacket.
Preferably, the wire winding screen jacket is the open cylinder structure in both ends, including many wire windings and many vertical bars, the wire winding forms by the rolling stainless steel wire with vertical bar, goes out the sand granularity according to the production zone and sets up the range interval of indulging muscle and wire winding respectively, will indulge the muscle along circumference equidistant range, the wire winding along the axial equidistant range and with indulge muscle welded connection and form the eye of a sieve.
Preferably, the section of the stainless steel wire is trapezoidal or triangular.
Preferably, the fine sand control net is formed by overlapping a plurality of layers of composite filter nets, the composite filter nets are made of stainless steel materials, and the mesh sizes of the composite filter nets are set according to the sand control precision requirement.
Preferably, the driving device is arranged in the central tube, a gear is arranged on the driving device, and the gear penetrates through a round hole formed in the side surface of the central tube and is in meshed connection with a groove-shaped rack arranged on the annular sealing inner baffle.
Preferably, the drive means is a buffer motor.
A well completion method aiming at the non-uniform sand production of a stratum adopts the composite sand control pipe, and specifically comprises the following steps:
and 5, when the pair of fine sand control nets rotate to be symmetrical along the direction of the maximum horizontal crustal stress, closing the driving device, and slowly taking the driving device out of the well to enter an oil and gas production process.
Preferably, if the inside sand blocking phenomenon that appears of compound sand control pipe in the production process, need to remove sand stifled in the compound sand control pipe, specifically include the following step:
and 3, when the pair of fine sand control nets rotate to the initial positions before the rotation or rotate to be symmetrical along the direction of the maximum horizontal stress, closing the driving device, slowly taking the driving device out of the well, and continuing oil and gas production.
Preferably, if the stress state of the stratum changes in the production process, the non-uniform sand control direction needs to be dynamically adjusted, and the method specifically comprises the following steps:
and 4, when the pair of fine sand control nets rotate to be symmetrical along the maximum horizontal stress direction at the moment, closing the driving device, slowly taking the driving device out of the well, and continuing oil and gas production.
The invention has the following beneficial technical effects:
1. the invention provides a composite sand control pipe for non-uniform sand production of a stratum, wherein a wire-wound screen sleeve is provided with a screen mesh with a narrow outside and a wide inside, so that the wire-wound screen sleeve is not easy to sand block; meanwhile, the wire-wound screen sleeve is provided with continuous circulation gaps, so that the phenomenon of capacity reduction caused by excessively fine meshes of the screen is avoided, the service life is long, and the downhole operation caused by frequent sand production can be avoided.
2. The invention provides a well completion method aiming at stratum non-uniform sand production, which can quickly solve the problem of sand blocking inside a sand control pipe in the oil and gas exploitation process and the phenomenon of sand production non-uniform direction change caused by stratum stress state change.
3. The invention gives consideration to the problems of sand prevention and capacity in the oil and gas exploitation process, and the composite sand prevention pipe adopts a special double-layer structure, thereby solving the sand production difference caused by uneven stress distribution around the shaft, enhancing the sand prevention effect, ensuring the capacity and improving the comprehensive economic benefit.
Drawings
FIG. 1 is a schematic cross-sectional view of the composite sand control pipe of the present invention.
Fig. 2 is a cross-sectional view of the composite sand control pipe of the present invention taken along line i-i.
FIG. 3 is a schematic view of the horizontal formation stress non-uniformity around a wellbore in accordance with the present invention.
FIG. 4 is a schematic view of the buffer motor according to the present invention.
In the figure, 1, wire winding, 2, an elastic telescopic sealing strip, 3, a fine sand control net, 4, a longitudinal rib, 5, a groove-shaped rack, 6, a central pipe, 7, an annular sealing inner baffle, 8, an annular sealing outer baffle, 9, a threaded coupling, 10, a well wall, 11, a shear failure zone, 12, a maximum horizontal ground stress direction, 13, a minimum horizontal ground stress direction, 14, a wire winding screen pipe, 15 and a buffer motor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The invention relates to a composite sand control pipe aiming at non-uniform sand production of a stratum, which is provided with a driving device in a matching way, wherein the driving device adopts a retarding motor 15, the retarding motor 15 is provided with a gear, and the composite sand control pipe comprises a central pipe 6, a wire winding screen sleeve 14 and a pair of fine sand control nets 3 as shown in figures 1 and 2.
The 6 sides of center tube are provided with the round hole of array arrangement, and the round hole diameter sets up according to the gear size of slow motor 15, guarantees that the gear of slow motor 15 can wear out from the round hole, and 6 both ends of center tube are connected with threaded coupling 9 respectively, insert the production string combination as standardized instrument with compound sand control pipe.
The wire-winding screen sleeve 14 is arranged outside the central pipe 6, a pair of annular sealing outer baffle plates 8 are arranged between the wire-winding screen sleeve 14 and the central pipe 6, the annular sealing outer baffle plates 8 are used for axial sealing, one end of each annular sealing outer baffle plate 8 is fixedly connected with the central pipe 6, the other end of each annular sealing outer baffle plate is fixedly connected with the wire-winding screen sleeve 14, and a closed space is formed by the wire-winding screen sleeves 14, the central pipe 6 and the wire-winding screen sleeve 14; a pair of annular sealing inner baffles 7 are arranged in the closed space, the annular sealing inner baffles 7 are embedded between the central pipe 6 and the wire winding screen sleeve 14 and can rotate along the central pipe 6, one side of each annular sealing inner baffle 7 clings to one side of the central pipe 6 and is provided with a groove-shaped rack 5, the groove-shaped racks 5 are used for being connected with a retarding motor 15 to drive the annular sealing inner baffles 7 to rotate, the other sides of the annular sealing inner baffles 7 are rough surfaces subjected to roughening treatment and are in contact with annular sealing outer baffles 8, the rough surfaces are used for increasing the friction force of the annular sealing inner baffles 7 on the contact surfaces of the annular sealing outer baffles 8, the positions of the annular sealing inner baffles 7 are kept unchanged in the oil-gas production process, and the annular sealing inner baffles 7 are ensured not to rotate easily in the normal oil-gas production process;
wherein, wire winding screen jacket 14 is the open cylinder structure in both ends, including many wire windings 1 and many longitudinal ribs 4, wire winding 1 and longitudinal rib 4 are rolled for trapezoidal stainless steel wire by the section and form, it sets up the range interval of indulging muscle 4 and wire winding 1 respectively to go out the sand granularity according to the production zone, make wire winding screen jacket 14's mesh size be less than the production zone and go out the sand granularity, with longitudinal rib 4 along the equidistant range of circumference, wire winding 1 along the equidistant range of axial and with indulge muscle 4 welded connection formation mesh, the mesh is outer narrow interior width on the wire winding screen jacket 14, the mesh distribution that is close to central tube 6 both ends department of wire winding screen jacket 14 is intensive promptly, keep away from the mesh distribution on the wire winding screen jacket 14 of 6 both ends department sparse, make wire winding screen jacket 14 difficult the emergence sand blocking, and all wire winding 1 and longitudinal rib 4 contact department all adopt welded connection, the bearing strength of wire winding screen jacket 14 has been improved.
The fine sand control net 3 is symmetrically arranged in the closed space and is connected with the annular sealing inner baffle 7, the fine sand control net 3 is of a cambered surface structure with two ends tilted, the two tilted positions are provided with the elastic telescopic sealing strips 2, the elastic telescopic sealing strips 2 are in contact with the wire winding screen jacket 14, and the elastic telescopic sealing strips 2 are made of elastic materials, so that the elastic telescopic sealing strips 2 can smoothly pass through the longitudinal ribs 4 on the wire winding screen jacket 14 when the fine sand control net rotates, and the effect of moving sealing is achieved; the fine sand control net 3 is formed by superposing three layers of composite filter screens made of stainless steel materials, meshes for filtering sand are arranged on the composite filter screens, the size of the meshes of the composite filter screens is set according to the sand control precision requirement, and the sand control precision requirement is met by the fine sand control net 3 due to the fact that the sand is blocked.
The buffer motor 15 is arranged inside the central tube 6, a gear is arranged on the buffer motor, the gear penetrates out of a round hole in the annular sealing inner baffle 7 through the central tube 6 and is connected with the groove-shaped rack 5 of the annular sealing inner baffle 7 in a twisted mode, the annular sealing inner baffle 7 rotates to drive the fine sand control net 3 to rotate, and the position of the fine sand control net 3 is changed.
In the actual production process, the stratum stress state may change, and the distribution of the shear stress borne by the borehole wall rock is not uniform due to the non-uniformity of the stratum horizontal ground stress in the direction of the borehole wall 10, fig. 3 shows a schematic diagram of the non-uniformity of the horizontal ground stress around the borehole, the shear stress on the borehole wall 10 in the direction of the maximum horizontal ground stress 12 is the smallest, and the shear stress on the borehole wall 10 in the direction of the minimum horizontal ground stress 13 is the largest, so that the near-borehole wall 10 near the direction of the minimum horizontal ground stress 13 is easily subjected to shear failure, and a shear failure zone 11 symmetrical to the direction of the maximum horizontal ground stress 12 appears, thereby causing serious non-uniform sand production.
In this embodiment, a natural gas hydrate formation is taken as an example to illustrate a well completion method for non-uniform sand production of a formation, which adopts the composite sand control pipe, and a retarding motor 15 is provided in cooperation with the composite sand control pipe, and specifically includes the following steps:
And 2, putting the composite sand control pipe into the well and placing the composite sand control pipe in the production interval.
And 3, placing the retarding motor 15 in the central tube 6 of the composite sand control tube, and as shown in fig. 4, enabling the gear arranged on the retarding motor 15 to penetrate out of a round hole in the side surface of the central tube 6, which is positioned above the annular sealing inner baffle 7, and to be in meshed connection with the groove-shaped rack 5 arranged on the annular sealing inner baffle 7.
And 4, setting the number of gear revolutions of the buffer motor 15 according to the maximum horizontal ground stress direction 12 of the stratum of the production layer section and combining the gear rotating speed of the buffer motor 15, starting the buffer motor 15, and driving the annular sealing inner baffle 7 to rotate by the buffer motor 15 so as to enable the fine sand control nets 3 symmetrically arranged on the annular sealing inner baffle 7 to rotate.
And 5, when the pair of fine sand control nets 3 rotate to be symmetrical along the maximum horizontal stress direction 12, closing the buffer motor 15, and slowly taking out the buffer motor 15 from the well to enter the oil and gas production process.
If the sand blocking phenomenon occurs inside the composite sand control pipe in the production process, the sand blocking in the composite sand control pipe needs to be removed, and the following steps are adopted:
And 2, determining the gear revolution of the buffer motor 15 according to the sand blocking condition in the composite sand control pipe, starting the buffer motor 15, and driving the fine sand control net 3 arranged on the annular sealing inner baffle 7 to rotate by the buffer motor 15.
And 3, when the pair of fine sand control nets 3 rotate to the initial positions before the rotation or rotate to be symmetrical along the maximum horizontal stress direction 12, closing the buffer motor 15, slowly taking the buffer motor 15 out of the well, and continuing oil and gas production.
If the stratum stress state changes in the production process and the non-uniform sand prevention direction needs to be dynamically adjusted, the following steps are adopted:
And 2, placing the buffer motor 15 in the central pipe 6 of the composite sand control pipe, and as shown in fig. 4, enabling the gear arranged on the buffer motor 15 to penetrate out of a round hole in the side face of the central pipe 6 and to be in meshed connection with the groove-shaped rack 5 arranged on the annular sealing inner baffle 7.
And 3, determining a shearing damage area around the shaft according to the crustal stress distribution condition of the stratum of the production interval at the moment, setting the gear revolution of a buffer motor 15, starting the buffer motor 15, and driving the fine sand control net 3 arranged on the annular sealing inner baffle 7 to rotate by the buffer motor 15.
And 4, when the pair of fine sand control nets 3 rotate to be symmetrical along the maximum horizontal stress direction, closing the buffer motor 15, slowly taking out the buffer motor 15 from the well, and continuing oil and gas production.
The invention takes account of the problems of sand prevention and capacity in the process of exploiting natural gas hydrate, solves the problem of sand production difference caused by uneven stress distribution around the shaft by using the special double-layer structure composite sand control pipe, enhances the sand control effect, ensures the capacity, solves the problem of sand blockage inside the composite sand control pipe, dynamically adjusts the uneven sand control, obtains good sand control effect, and improves the comprehensive economic benefit.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (7)
1. A composite sand control pipe aiming at non-uniform sand production of a stratum is provided with a driving device in a matching way, and is characterized by comprising a central pipe (6), a wire winding screen sleeve (14) and a pair of fine sand control nets (3);
round holes arranged in an array mode are formed in the side face of the central pipe (6), and two ends of the central pipe are connected with the threaded coupling (9);
the wire-winding screen sleeve (14) is arranged outside the central pipe (6), a pair of annular sealing outer baffle plates (8) is arranged between the wire-winding screen sleeve (14) and the central pipe (6), one end of each annular sealing outer baffle plate (8) is fixedly connected with the central pipe (6), the other end of each annular sealing outer baffle plate is fixedly connected with the wire-winding screen sleeve (14), a closed space is formed between each annular sealing outer baffle plate and the central pipe (6) and the wire-winding screen sleeve (14), a pair of annular sealing inner baffle plates (7) are arranged in the closed space, the annular sealing inner baffle plates (7) are embedded between the central pipe (6) and the wire-winding screen sleeve (14) and can rotate along the central pipe (6), one surfaces of the annular sealing inner baffle plates (7) are arranged to be smooth surfaces, one side close to the central pipe (6) is provided with a groove-shaped rack (5), the other surfaces are arranged to be rough surfaces and are in contact with the annular sealing outer baffle plates (8);
the fine sand control nets (3) are symmetrically arranged in the closed space and are connected with the annular sealing inner baffle (7), the fine sand control nets (3) are of cambered surface structures with two ends tilted, elastic telescopic sealing strips (2) are arranged at the tilted positions of the two ends, and the elastic telescopic sealing strips (2) are in contact with the wire winding screen sleeve (14);
the wire-wound screen sleeve (14) is of a cylindrical structure with two open ends and comprises a plurality of wire windings (1) and a plurality of longitudinal ribs (4), wherein the wire windings (1) and the longitudinal ribs (4) are formed by rolling stainless steel wires, the arrangement intervals of the longitudinal ribs (4) and the wire windings (1) are respectively set according to the sand production granularity of a production layer, the longitudinal ribs (4) are arranged at equal intervals along the circumferential direction, and the wire windings (1) are arranged at equal intervals along the axial direction and are welded with the longitudinal ribs (4) to form screen holes;
the driving device is arranged inside the central pipe (6), a gear is arranged on the driving device, penetrates out of a round hole formed in the side face of the central pipe (6), and is connected with a groove-shaped rack (5) arranged on the annular sealing inner baffle (7) in an occlusion mode.
2. The composite sand control pipe for non-uniform sand production in the stratum according to claim 1, wherein the section of the stainless steel wire is trapezoidal or triangular.
3. The composite sand control pipe aiming at the non-uniform sand production of the stratum as recited in claim 1, characterized in that the fine sand control net (3) is formed by overlapping a plurality of layers of composite filter nets, the composite filter nets are made of stainless steel materials, and the mesh sizes of the composite filter nets are set according to the sand control precision requirement.
4. A composite sand control pipe for non-uniform sanding of earth formations according to claim 1 characterized in that the driving means is a buffer motor (15).
5. A completion method for non-uniform sand production of a stratum, which is characterized in that the composite sand control pipe of claim 1 is adopted, and comprises the following steps:
step 1, logging instruments are used for downhole measurement, and the maximum horizontal ground stress direction (12) of a stratum of a production interval is determined;
step 2, placing the composite sand control pipe into a well and placing the composite sand control pipe in a production interval;
step 3, placing a driving device in a central pipe (6) of the composite sand control pipe, and enabling a gear arranged on the driving device to penetrate out of a round hole in the side face of the central pipe (6) and to be in meshed connection with a groove-shaped rack (5) arranged on an annular sealing inner baffle (7);
step 4, setting the gear revolution of a driving device according to the maximum horizontal ground stress direction (12) of the stratum of the production interval by combining the gear rotating speed of the driving device, starting the driving device, and driving the annular sealing inner baffle (7) to rotate by the driving device so as to enable the fine sand control net (3) symmetrically arranged on the annular sealing inner baffle (7) to rotate;
and 5, when the pair of fine sand control nets (3) rotate to be symmetrical along the maximum horizontal stress direction (12), closing the driving device, and slowly taking the driving device out of the well to enter an oil and gas production process.
6. The completion method for the nonuniform sand production of the stratum as claimed in claim 5, wherein if the sand blocking phenomenon occurs inside the composite sand control pipe in the production process, the sand blocking in the composite sand control pipe needs to be removed, which comprises the following steps:
step 1, stopping oil gas production, placing a driving device in a central pipe (6) of a composite sand control pipe, penetrating a gear arranged on the driving device out of a round hole in the side face of the central pipe (6), and engaging and connecting the gear with a groove-shaped rack (5) arranged on an annular sealing inner baffle (7);
step 2, determining the gear revolution of a driving device according to the sand blocking condition in the composite sand prevention pipe, starting the driving device, and driving the fine sand prevention net (3) arranged on the annular sealing inner baffle (7) to rotate by the driving device;
and 3, when the pair of fine sand control nets (3) rotate to the initial positions before the rotation or rotate to be symmetrical along the maximum horizontal stress direction (12), closing the driving device, slowly taking the driving device out of the well, and continuing oil and gas production.
7. The completion method for the non-uniform sand production of the stratum as claimed in claim 5, wherein if the stress state of the stratum changes in the production process, the non-uniform sand control direction needs to be dynamically adjusted, and the method comprises the following steps:
step 1, stopping oil and gas production, putting a logging instrument into a well for measurement, and determining the maximum horizontal ground stress direction (12) of the stratum of the production interval at the moment;
step 2, placing a driving device in a central pipe (6) of the composite sand control pipe, and enabling a gear arranged on the driving device to penetrate out of a round hole in the side face of the central pipe (6) and to be in meshed connection with a groove-shaped rack (5) arranged on an annular sealing inner baffle (7);
step 3, determining a shearing damage area (11) around the shaft according to the ground stress distribution condition of the stratum of the production interval at the moment, setting the gear revolution of a driving device, starting the driving device, and driving the fine sand control net (3) arranged on the annular sealing inner baffle (7) to rotate by the driving device;
and 4, when the pair of fine sand control nets (3) rotate to be symmetrical along the maximum horizontal stress direction at the moment, closing the driving device, slowly taking the driving device out of the well, and continuing oil and gas production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011499201.2A CN112610192B (en) | 2020-12-18 | 2020-12-18 | Composite sand control pipe aiming at non-uniform sand production of stratum and well completion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011499201.2A CN112610192B (en) | 2020-12-18 | 2020-12-18 | Composite sand control pipe aiming at non-uniform sand production of stratum and well completion method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112610192A CN112610192A (en) | 2021-04-06 |
| CN112610192B true CN112610192B (en) | 2022-10-21 |
Family
ID=75240364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011499201.2A Active CN112610192B (en) | 2020-12-18 | 2020-12-18 | Composite sand control pipe aiming at non-uniform sand production of stratum and well completion method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112610192B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113638720B (en) * | 2021-10-18 | 2022-01-04 | 中国石油大学(华东) | Intelligent self-plugging-removing sand control screen pipe and using method thereof |
| CN114809996B (en) | 2022-04-27 | 2022-12-13 | 西南石油大学 | Sand prevention device for ocean hydrate production |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2929179Y (en) * | 2006-06-23 | 2007-08-01 | 大港油田集团有限责任公司 | Combined anti-sand sieve tube |
| CN205532477U (en) * | 2016-04-14 | 2016-08-31 | 中国石油天然气股份有限公司 | Not kill -job control valve and high temperature resistant sand control tubular column of giving up thereof |
| CN110617035A (en) * | 2019-09-18 | 2019-12-27 | 中国石油大学(华东) | Multistage sand prevention mode and device for natural gas hydrate reservoir |
| CN210888893U (en) * | 2019-11-13 | 2020-06-30 | 刘磊 | Sand and stone filtering device for oil production |
| CN211008586U (en) * | 2019-10-29 | 2020-07-14 | 中国石油化工股份有限公司 | Down-hole seam punching screen composite filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10364656B2 (en) * | 2016-09-14 | 2019-07-30 | Halliburton Energy Services, Inc. | Annular flow rings for sand control screen assemblies |
-
2020
- 2020-12-18 CN CN202011499201.2A patent/CN112610192B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2929179Y (en) * | 2006-06-23 | 2007-08-01 | 大港油田集团有限责任公司 | Combined anti-sand sieve tube |
| CN205532477U (en) * | 2016-04-14 | 2016-08-31 | 中国石油天然气股份有限公司 | Not kill -job control valve and high temperature resistant sand control tubular column of giving up thereof |
| CN110617035A (en) * | 2019-09-18 | 2019-12-27 | 中国石油大学(华东) | Multistage sand prevention mode and device for natural gas hydrate reservoir |
| CN211008586U (en) * | 2019-10-29 | 2020-07-14 | 中国石油化工股份有限公司 | Down-hole seam punching screen composite filter |
| CN210888893U (en) * | 2019-11-13 | 2020-06-30 | 刘磊 | Sand and stone filtering device for oil production |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112610192A (en) | 2021-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112610192B (en) | Composite sand control pipe aiming at non-uniform sand production of stratum and well completion method | |
| CA2774109C (en) | A system and apparatus for well screening including a foam layer | |
| US9562414B2 (en) | Isolation assembly for inflow control device | |
| US20100258302A1 (en) | Well Screen With Drainage Assembly | |
| CN101736732A (en) | Pressure and water reduction construction method of ultra-deep foundation pit confined water | |
| US20030183395A1 (en) | System and method for preventing sand production into a well casing having a perforated interval | |
| WO1992006275A1 (en) | Flexible gravel prepack production system for wells having high dog-leg severity | |
| CN110578506A (en) | Unconventional reservoir horizontal well fracture control volume fracturing well completion method | |
| CN113047819A (en) | Sand control screen pipe and application thereof | |
| CN206707681U (en) | A kind of sand control screen of adjustable filtering particle diameter | |
| AU2005331931B2 (en) | Method of drilling a stable borehole | |
| WO2015006013A1 (en) | Flow control devices including a sand screen having integral standoffs and methods of using the same | |
| CN202914053U (en) | Sand control screen pipe | |
| CN108071374A (en) | Anti- mud drum screen casing | |
| CN1601051A (en) | Bilayered inflatable sand prevention sieve tube filled in advance | |
| RU138070U1 (en) | FILTER WELL | |
| CA2903982C (en) | Flow control screen assembly having an adjustable inflow control device | |
| US9175550B2 (en) | Containment cellar | |
| US7870901B2 (en) | Inhibiting formation face failure in oil and gas wells | |
| CN112253186A (en) | Method for stopping leakage of working faces at different layer depths of railway tunnel shaft | |
| CN112049603B (en) | Method for packing outer annular space of sieve tube | |
| Gad et al. | Design of Electrical Submersible Pumping (ESP) System Associated with Vortex Sand Shield System for Effectively Handling Solid and Sand (Actual Field Case Study) | |
| US20170030175A1 (en) | Stimulation of Packerless Wells for Enhanced Oil Recovery | |
| SU1645468A1 (en) | Method of bottom-hole pumping | |
| CA2646849C (en) | Inhibiting formation face failure in oil and gas wells |
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 |