CN115026522B - Preparation process of high-density punched seam sieve tube - Google Patents
Preparation process of high-density punched seam sieve tube Download PDFInfo
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- CN115026522B CN115026522B CN202210796189.4A CN202210796189A CN115026522B CN 115026522 B CN115026522 B CN 115026522B CN 202210796189 A CN202210796189 A CN 202210796189A CN 115026522 B CN115026522 B CN 115026522B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- 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
Abstract
The invention relates to a preparation process of a high-density punched seam screen pipe, which comprises the following steps of S1, drilling a target pipe by a drilling device, wherein the control device predicts the liquid production amount according to a target area and obtains the drilling number of a base pipe; s2, slotting the metal to be treated by the slotting device to form a filter sleeve, wherein the control device adjusts the slotting number of the filter sleeve according to the sand yield of a target area, adjusts the area of each slotting when the slotting number does not meet a preset standard, obtains the average grain size of gravel of the target area when the slotting number meets the preset standard, adjusts the area of each slotting, and obtains the vulnerability to adjust the distance between adjacent slotting of each circumference of the filter sleeve; s3, the control device adjusts the length of the base pipe and the number of drilled holes according to the acquired tightness; and S4, the control device acquires the sand content in the liquid in the detection process and adjusts the distance between the slits on each circumference of the adjacent filter sleeve.
Description
Technical Field
The invention relates to the field of oil exploitation, in particular to a preparation process of a high-density punched seam sieve tube.
Background
In the oil development in-process, the oil reservoir sand production not only can influence the adoption quality, and can cause the oil production pipeline to block up, therefore, in order to guarantee the normal exploitation in oil field, the sand control screen pipe needs to be used, but in the preparation of traditional sand control pipe, unable each component to the sand control pipe carries out the specialized adjustment according to the specific conditions of target area, thereby the sand control ability of the sand control screen pipe that makes the preparation satisfies the sand control requirement, guarantee screen pipe self intensity simultaneously, avoid taking place to damage in the use, and rectangle or single trapezoidal seam in the traditional sand control screen pipe take place to block up easily, influence the sand control effect and the life of sand control screen pipe.
Chinese patent ZL202010968770.0 discloses an oil field is opened and is adopted resistant erosion and fill bypass screen pipe, and its technical characteristics is, and the inner wall diameter of cylindrical screen net body is the same with the outer wall diameter of inside parent tube, and the inner wall diameter of outer tube is greater than the outer wall diameter of cylindrical screen net body, and a plurality of opening holes that are the ring array and set up are seted up to the interlude of inside parent tube, can't adjust each part according to different oil field characteristics to extension life.
Disclosure of Invention
Therefore, the invention provides a preparation process of the high-density crack-punching sieve tube, which can solve the technical problem that the number of the base tube drill holes and the filter sleeve cracks in the high-density crack-punching sieve tube cannot be adjusted according to the preset liquid production amount, the sand production amount, the gravel particle size and the vulnerability of a target area, so that the sand prevention effect of the high-density crack-punching sieve tube meets the preset standard.
In order to achieve the purpose, the invention provides a preparation process of a high-density punched seam screen pipe, which comprises the following steps:
s1, drilling a target pipe by using a drilling device, wherein the control device compares the predicted liquid production amount of a target area with a preset liquid production amount to obtain the drilling quantity of a base pipe so as to enable the formed base pipe to meet a preset standard;
s2, the slotting device slotting the metal to be processed to form a filter sleeve, wherein the control device adjusts the slotting number of the filter sleeve according to the sand yield of a target area, compares the obtained slotting number with a preset number standard value, adjusts the area of each slotting when the slotting number does not meet a preset standard, judges that the slotting number meets the preset standard to obtain the average grain size of gravels of the target area, adjusts the area of each slotting according to the obtained average grain size of the gravels, and when the slotting number and the area of each slotting meet the preset standard, the control device obtains the vulnerability according to the drilling number of a base pipe, the slotting number of the filter sleeve and the area of each slotting, compares the obtained vulnerability with the preset vulnerability, and adjusts the distance between the slotting of adjacent circles of the filter sleeve to enable the formed filter sleeve to meet the preset standard;
s3, sleeving the base pipe formed in the step S1 and the filter sleeve formed in the step S2 by using a splicing device to form an assembly, acquiring the tightness of the assembly by using the control device, adjusting the length of the base pipe and the number of drilled holes according to the acquired tightness, and sleeving the assembly on the assembly by using the splicing device to form a high-density punched seam screen pipe when the tightness of the assembly acquired by using the control device meets a preset standard;
and S4, sampling and detecting the formed high-density slit sieve tube, wherein the control device acquires the sand content of liquid in the high-density slit sieve tube in the detection process, compares the acquired sand content with a preset sand content, and adjusts the distance between adjacent peripheral slits of the filter sleeve so as to enable the sand prevention effect of the next high-density slit sieve tube to meet a preset standard.
Further, in the step S1, the control device presets a fluid production amount Q, compares the obtained target zone predicted fluid production amount Q with the preset fluid production amount, and obtains the number of drilled holes of the base pipe, wherein,
when Q is less than or equal to Q1, the control device selects a first preset drilling quantity N1 as the drilling quantity of the inner diameter of the base pipe;
when Q1 is larger than Q and smaller than Q2, the control device selects a second preset drilling quantity N2 as the drilling quantity of the inner diameter of the base pipe;
when Q is larger than or equal to Q2, the control device selects a third preset drilling quantity N3 as the drilling quantity of the inner diameter of the base pipe;
the control device presets a liquid production amount Q, sets a first preset liquid production amount Q1, a second preset liquid production amount Q2, a control device presets a drilling number N, sets a first preset drilling number N1, a second preset drilling number N2 and a third preset drilling number N3.
Further, in the step S2, the control device presets a sand output G, compares the obtained sand output G of the target area with the preset sand output, and adjusts the number of the slits of the filter sleeve, wherein,
when G is less than or equal to G1, the control device judges that the number of the slits of the filter sleeve is reduced from s to s1, and sets s1= sx (1- | G1-G |/G1);
when G1 is more than G and less than G2, the control device judges that the number of the slits of the filter sleeve is not adjusted;
when G is larger than or equal to G2, the control device judges that the number s of the slits of the filter sleeve is increased to s2, and sets s2= sx (1 + | G2-G |/G2);
the control device presets a sand output G, sets a first preset sand output G1 and a second preset sand output G2.
Furthermore, the control device presets a quantity standard value S, the slotting device compares the obtained slotting quantity si of the filter sleeve with the preset quantity standard value, and the area of each slotting of the filter sleeve is adjusted, wherein,
when si is less than or equal to S1, the control device judges that the area of each slit of the filter sleeve is increased;
when S1 is larger than si and smaller than S2, the control device does not adjust the area of each slit of the filter sleeve, and the control device obtains the average grain size of the gravel in the target area;
when si is larger than or equal to S2, the control device judges that the area of each slit of the filter sleeve is reduced;
the control device presets a quantity standard value S, and sets a first preset quantity standard value S1 and a second preset quantity standard value S2, i =1,2.
Further, when the number of the filter sleeve slits acquired by the control device is smaller than or equal to a first preset number standard value, the control device judges that the area p of each slit of the filter sleeve is increased to p1, and sets p1= pxx (1 + | S1-si |/S1/2), and when the number of the filter sleeve slits acquired by the control device is larger than or equal to a second preset number standard value, the control device judges that the area p of each slit of the filter sleeve is reduced to p2, and sets p2= pxx (1- | S2-si |/S2/2).
Further, when the number of the slits obtained by the control device is smaller than a first preset number standard value and larger than a second preset number standard value, the control device obtains the average grain diameter R of the gravels in the target area, compares the obtained average grain diameter with a preset grain diameter R, and adjusts the area of each slit of the filter sleeve, wherein,
when R is less than or equal to R1, the control device judges that the areas pj to pj1 of the slits of the filter sleeve are reduced, and sets pj1= pj
；
When R1 is more than R and less than R2, the control device does not adjust the area of each slit of the filter sleeve;
when R is larger than or equal to R2, the control device judges that the areas pj to pj2 of all the slots of the filter sleeve are increased, and sets pj2= pj
；
The control device presets a particle size R, and sets a first preset particle size R1 and a second preset particle size R2, j =1,2.
Further, the filter sleeve is formed by adopting spiral welding, and the slit of the filter sleeve is a 90-degree trapezoidal slit.
Furthermore, the control device acquires vulnerability E according to the number of drilled holes of the base pipe, the number of slots of the filter sleeve and the area of each slot, sets E = Na × si × pjk, compares the acquired vulnerability with the preset vulnerability E, and adjusts the distance between the slots on each circumference adjacent to the filter sleeve, wherein,
when E is less than or equal to E, the control device judges that the distance between the adjacent circumferential slots of the filter sleeve is not adjusted;
when E is larger than E, the control device judges that the distance h to h 'between every two adjacent circumferential slots of the filter sleeve is increased, and sets h' = h and
；
wherein a =1,2,3,k =1,2.
Further, in the step S3, the control means acquires a tightness Y of the assembly and compares the acquired tightness with a preset tightness Y, and adjusts the length of the base pipe and the number of drilled holes, wherein,
when Y is less than or equal to Y1, the control device judges that the length of the base pipe is reduced and the drilling number of the base pipe is reduced;
when Y1 is more than Y and less than Y2, the control device judges that the drilling number of the base pipe is reduced;
when Y is larger than or equal to Y2, the control device does not adjust the length of the base pipe and the number of drilled holes, and the matching ring is sleeved on the assembly part by the splicing device;
wherein, controlling means predetermines elasticity Y, sets for first predetermined elasticity Y1, and second predetermined elasticity Y2.
Further, in the step S4, the control device presets a sand content W, compares the obtained sand content W of the liquid in the high-density slit sieve tube with the preset sand content, and secondarily adjusts the distance between adjacent circumferential slits of the filter sleeve, wherein,
when W is less than or equal to W, the control device judges that the distance between every two adjacent circumferential slots of the filter sleeve is not adjusted;
when W is larger than W, the control device judges that the distance h 'to h'1 between every two adjacent circumferential slots of the filter sleeve is reduced, and sets
。
The control device is used for obtaining the drilling quantity of the base pipes according to the preset liquid production amount of a target area when the drilling device drills holes in a target pipe so that the formed base pipes meet the preset standard, slotting the metal to be processed by the slotting device, adjusting the slotting quantity of the filter sleeve according to the sand production amount of the target area when the filter sleeve is prepared, adjusting the area of each slotting when the slotting quantity does not meet the preset standard, obtaining the average grain size of gravels of the target area by the control device when the slotting quantity meets the preset standard, adjusting the area of each slotting according to the obtained average grain size of the gravels, when the slotting quantity and the area of each slotting meet the preset standard, obtaining the vulnerability by the control device according to the drilling quantity of the base pipes, the slotting quantity of the filter sleeve and the area of each slotting, comparing the obtained vulnerability with the preset vulnerability, adjusting the distance between the adjacent slotting of the filter sleeve once so that the formed filter sleeve meets the preset standard, sleeving the control device sleeving the filter sleeve and the filter sleeve which meet the preset standard to form an assembly, adjusting the distance between the base pipes which meets the preset base pipes according to the preset standard, and adjusting the distance between the base pipes to enable the high-density of the high-density-of the base pipes to be connected to the filter sleeve to form a high-sand-containing screen-pipe assembly according to the preset standard. According to the invention, the structures of the base pipe and the filter sleeve are adjusted in the preparation process according to the specific conditions of the target area, so that the sand prevention capability of the formed high-density crack screen pipe is enhanced, and the service life of the high-density crack screen pipe is prolonged.
In particular, the control device selects the number of drilled holes of the base pipe according to the predicted fluid production capacity of the target area, wherein the higher the predicted fluid production capacity of the target area is, the more fluid needs to be in the base pipe per unit time, and therefore the control device selects the number of drilled holes of the base pipe according to the predicted fluid production capacity, wherein N1 is more than N2 and more than N3.
Particularly, the slits on the filter sleeve are spirally and uniformly distributed on the filter sleeve, the distance between every two adjacent slits is the same, the control device adjusts the number of the slits on the filter sleeve according to the sand production amount of a target area, when the sand production amount acquired by the slit device is less than or equal to a first preset sand production amount, the filter sleeve needs less sand production amount to be filtered, in order to improve the strength of the filter sleeve, the control device judges to reduce the number of the slits on the filter sleeve, when the sand production amount acquired by the control device is more than or equal to a second preset sand production amount, the filter sleeve needs larger sand production amount to be filtered, and in order to improve the sand prevention capability, the control device judges to increase the number of the slits on the filter sleeve.
Particularly, the control device compares the obtained number of the slits of the filter sleeve with a preset number, and adjusts the area of each slit of the filter sleeve, wherein when the number of the slits obtained by the control device is less than or equal to a first preset number standard value, the result shows that the number of the slits of the filter sleeve is less at the moment, the extraction efficiency of crude oil is affected, and the number of the slits does not meet a preset standard, so that the control device judges that the area of each slit of the filter sleeve is increased, the filtering efficiency meets the preset standard under the condition that the number of the slits meets the preset standard, and when the number of the slits obtained by the control device is greater than or equal to a second preset number standard value, the result shows that the number of the slits of the filter sleeve is more at the moment, the pressure resistance is reduced, and therefore, the control device judges that the area of each slit of the filter sleeve is reduced, so that the sand prevention capability of the filter sleeve meets the preset standard.
In particular, the control device compares the obtained average grain size of the gravel of the target area with a preset grain size and adjusts the area of each slit of the filter sleeve, wherein when the average grain size obtained by the control device is smaller than or equal to a first preset grain size, the grain size of the gravel of the target area is smaller, in order to better prevent the gravel from being mixed with the liquid, the control device judges that the area of the slit of the filter sleeve is reduced, and when the average grain size obtained by the control device is larger than or equal to a second preset grain size, the grain size of the gravel of the target area is larger, and the control device can increase the area of the slit of the filter sleeve so as to improve the liquid extraction efficiency.
Particularly, the filter sleeve is formed by spiral welding, the strength of the filter sleeve is obviously improved, the seam of the filter sleeve is a 90-degree trapezoidal seam, when tiny gravel enters the seam cavity, the gravel can be taken away by liquid, the blockage of the seam cavity is not easy to cause, the seam cavity is kept smooth, the abrasion speed of liquid flow to the seam opening can be greatly reduced, and the service life of the sieve tube is prolonged.
Especially, when the number of the drill holes on the base pipe, the number of the slots on the filter sleeve and the area of each slot are large, the strength of the high-density slot-punching sieve pipe formed later is low, and the high-density slot-punching sieve pipe is easy to damage.
Especially, the splicing apparatus cup joints the filter sleeve and the base pipe that are prepared to form the sub-assembly, and the control device acquires the elasticity of the sub-assembly, and compares the acquired elasticity with the preset elasticity to adjust the length of the base pipe and the drilling number of the base pipe, wherein, when the elasticity acquired by the control device is less than or equal to the first preset elasticity, the combination between the base pipe and the filter sleeve is looser, the filter sleeve is easy to move under the liquid impact, so the control device judges that the length and the drilling number of the base pipe are reduced to lighten the impact time and force of the liquid, when the elasticity acquired by the control device is more than the first preset elasticity and less than the second preset elasticity, the elasticity between the base pipe and the filter sleeve is smaller, the comparison is close to the preset standard, and the control device judges that the drilling number of the base pipe is reduced to lighten the impact force of the liquid, so that the sand control effect meets the preset standard.
Particularly, the control device acquires the sand content in the high-density slotted screen pipe in sampling detection and adjusts the distance between the peripheral slots of the filter sleeve according to the acquired sand content, wherein when the sand content acquired by the control device is greater than the preset sand content, the sand prevention capability of the high-density sand control screen pipe is low, because the control device judges that the distance between the adjacent peripheral slots of the filter sleeve is reduced, the slotted density of the filter sleeve is higher, and the filtering capability is improved, so that the next high-density slotted screen pipe meets the preset standard.
Drawings
FIG. 1 is a schematic structural diagram of a system for making a high-density perforated screen pipe according to an embodiment of the present invention;
FIG. 2 is a flow chart of a process for making a high-density perforated screen according to an embodiment of the present invention;
fig. 3 is a schematic view of a slotted structure of the filter sleeve according to the embodiment of the invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a schematic diagram of a system for preparing a high-density perforated screen according to an embodiment of the present invention is shown, including,
the device comprises a fixing device, a first motor and a second motor, wherein the fixing device is used for fixing a material to be treated and comprises a supporting plate 101 for placing the material to be treated and a fixing mechanism for fixing the material to be treated, the fixing mechanism comprises a fixing block 102 which is in contact with a member to be treated, a connecting rod 103 which is connected with the fixing block, and the first motor 104 which provides power for the movement of the fixing block;
the drilling device is connected with the fixing device and used for drilling a target tubular product to form a base pipe meeting a preset standard, wherein the drilling device comprises a drill bit 201 for drilling and a moving mechanism for providing power for the movement of the drill bit, and the moving mechanism comprises a sliding block 202 connected with the drill bit and a second motor 203 for providing power for the movement of the drill bit;
the slotting device is used for slotting the metal to be processed to form a filter sleeve;
the splicing device is used for sleeving the prepared base pipe and the filter sleeve, and sleeving the matching sleeve on an assembly formed by the base pipe and the filter sleeve when the tightness between the base pipe and the filter sleeve meets a preset standard so as to form the high-density punched seam screen pipe;
the control device is connected with the drilling device, the slotting device and the splicing device, when the drilling device drills a target pipe, the control device obtains the drilling quantity of the base pipe according to the predicted liquid production quantity of a target area so that the formed base pipe meets a preset standard, the slotting device slots the metal to be processed, when the filter sleeve is prepared, the control device adjusts the slotting quantity of the filter sleeve according to the sand production quantity of the target area and adjusts the area of each slot when the slotting quantity does not meet the preset standard, the control device judges that the slotting quantity meets the preset standard to obtain the average grain diameter of the gravel of the target area and adjusts the area of each slot according to the obtained average grain diameter of the gravel, when the slotting quantity and the area of each slot meet the preset standard, the control device obtains the vulnerability according to the drilling quantity of the base pipe, the slotting quantity of the filter sleeve and the area of each slot, compares the obtained vulnerability with the preset vulnerability, adjusts the space between the adjacent slots of the filter sleeve so that the formed filter sleeve meets the preset standard, and adjusts the area of the high sand control screen pipe according to the preset standard.
Referring to fig. 2, it is a flow chart showing the process of making the high-density perforated screen pipe according to the embodiment of the present invention, including,
the method comprises the following steps that S1, a drilling device is used for drilling a target pipe, wherein a control device is used for comparing predicted liquid production capacity of a target area with preset liquid production capacity to obtain the drilling quantity of a base pipe, so that the formed base pipe meets a preset standard;
s2, the slotting device slotting the metal to be processed to form a filter sleeve, wherein the control device adjusts the slotting number of the filter sleeve according to the sand yield of a target area, compares the obtained slotting number with a preset number standard value, adjusts the area of each slotting when the slotting number does not meet a preset standard, judges that the slotting number meets the preset standard to obtain the average grain diameter of gravel of the target area, adjusts the area of each slotting according to the obtained average grain diameter of gravel, and when the slotting number and the area of each slotting both meet the preset standard, the control device obtains the vulnerability according to the drilling number of a base pipe, the slotting number of the filter sleeve and the area of each slotting, compares the obtained vulnerability with the preset vulnerability, and adjusts the distance between every two adjacent slotting of the filter sleeve to enable the formed filter sleeve to meet the preset standard;
s3, sleeving the base pipe formed in the step S1 and the filter sleeve formed in the step S2 by a splicing device to form an assembly, acquiring the tightness of the assembly by the control device, adjusting the length of the base pipe and the number of drilled holes according to the acquired tightness, and sleeving the assembly on the assembly by the splicing device to form the high-density punched seam screen pipe when the tightness of the assembly acquired by the control device meets a preset standard;
and S4, sampling and detecting the formed high-density slit sieve tube, wherein the control device acquires the sand content of liquid in the high-density slit sieve tube in the detection process, compares the acquired sand content with a preset sand content, and adjusts the distance between adjacent circumferential slits of the filter sleeve so as to enable the sand control effect of the next high-density slit sieve tube to meet a preset standard.
Specifically, the manner of acquiring the tightness is not particularly limited in the present invention, as long as the tightness can be acquired, and the embodiment of the present invention provides a preferred implementation, and the tightness of the assembly can be acquired by the technical means disclosed in the method for quickly detecting the tightness of a fastener according to cn201710047274. X.
In the step S1, the control device presets a fluid production amount Q, compares the obtained target zone predicted fluid production amount Q with a preset fluid production amount, obtains the number of drilled holes of the base pipe, wherein,
when Q is less than or equal to Q1, the control device selects a first preset drilling quantity N1 as the drilling quantity of the inner diameter of the base pipe;
when Q1 is more than Q and less than Q2, the control device selects a second preset drilling quantity N2 as the drilling quantity of the inner diameter of the base pipe;
when Q is larger than or equal to Q2, the control device selects a third preset drilling quantity N3 as the drilling quantity of the inner diameter of the base pipe;
the control device presets a liquid production amount Q, sets a first preset liquid production amount Q1, a second preset liquid production amount Q2, a control device presets a drilling number N, sets a first preset drilling number N1, a second preset drilling number N2 and a third preset drilling number N3.
Specifically, the control device selects the number of the drilled holes of the base pipe according to the predicted fluid production of the target area, and the higher the predicted fluid production of the target area is, the more fluid is needed in the base pipe per unit time, so the control device selects the number of the drilled holes of the base pipe according to the predicted fluid production, wherein N1 is more than N2 and less than N3.
Specifically, the base pipe is not specifically limited in material, and only can meet the requirements, and the embodiment of the invention provides a preferred embodiment, wherein the base pipe is formed by drilling an oil pipe or a casing pipe meeting the API standard.
Specifically, the structure of the high-density perforated screen pipe is not specifically limited, and the embodiment of the invention provides a preferred embodiment, wherein the high-density perforated screen pipe comprises a base pipe, a filter sleeve and a matching ring from inside to outside in sequence.
In the step S2, the control device presets a sand yield G, compares the obtained sand yield G of the target region with a preset sand yield, and adjusts the number of slits of the filter sleeve, wherein,
when G is less than or equal to G1, the control device judges that the number of the slits of the filter sleeve is reduced to s1, and sets s1= sx (1- | G1-G |/G1);
when G1 is more than G and less than G2, the control device judges that the number of the slits of the filter sleeve is not adjusted;
when G is larger than or equal to G2, the control device judges that the number s of the slits of the filter sleeve is increased to s2, and sets s2= sx (1 + | G2-G |/G2);
the control device presets a sand output G, sets a first preset sand output G1 and a second preset sand output G2.
Specifically, the slits on the filter sleeve are spirally and uniformly distributed on the filter sleeve, the distance between every two adjacent slits is the same, the control device adjusts the number of the slits on the filter sleeve according to the sand output of the target area, when the sand output acquired by the slit device is less than or equal to a first preset sand output, the amount of sand required to be filtered by the filter sleeve is less, in order to improve the strength of the filter sleeve, the control device judges to reduce the number of the slits on the filter sleeve, when the sand output acquired by the control device is greater than or equal to a second preset sand output, the amount of sand required to be filtered by the filter sleeve is larger, and in order to improve the sand control capability, the control device judges to increase the number of the slits on the filter sleeve.
The control device presets a quantity standard value S, the slotting device compares the obtained slotting quantity si of the filter sleeve with the preset quantity standard value and adjusts the area of each slotting of the filter sleeve, wherein,
when si is less than or equal to S1, the control device judges that the area of each slit of the filter sleeve is increased;
when S1 is larger than si and smaller than S2, the control device does not adjust the area of each slit of the filter sleeve, and the control device obtains the average grain size of the gravel in the target area;
when si is larger than or equal to S2, the control device judges that the area of each slit of the filter sleeve is reduced;
the control device presets a quantity standard value S, and sets a first preset quantity standard value S1 and a second preset quantity standard value S2, i =1,2.
When the number of the filter sleeve slits acquired by the control device is less than or equal to a first preset number standard value, the control device judges that the area p of each slit of the filter sleeve is increased to p1, and sets p1= pxx (1 + | S1-si |/S1/2), and when the number of the filter sleeve slits acquired by the control device is greater than or equal to a second preset number standard value, the control device judges that the area p of each slit of the filter sleeve is reduced to p2, and sets p2= pxx (1- | S2-si |/S2/2).
Specifically, the control device compares the obtained number of the slits of the filter sleeve with a preset number, and adjusts the area of each slit of the filter sleeve, wherein when the number of the slits obtained by the control device is less than or equal to a first preset number standard value, the result shows that the number of the slits of the filter sleeve is less at the moment, the extraction efficiency of crude oil is affected, and the area does not meet a preset standard, so that the control device judges that the area of each slit of the filter sleeve is increased, the filtering efficiency meets the preset standard under the condition that the number of the slits meets the preset standard, and when the number of the slits obtained by the control device is greater than or equal to a second preset number standard value, the result shows that the number of the slits of the filter sleeve is more at the moment, and the pressure resistance is reduced, so that the sand prevention capability of the filter sleeve meets the preset standard.
When the number of the slits obtained by the control device is smaller than a first preset number standard value and larger than a second preset number standard value, the control device obtains the average grain diameter R of the gravel in the target area, compares the obtained average grain diameter with the preset grain diameter R, and adjusts the area of each slit of the filter sleeve, wherein,
when R is less than or equal to R1, the control device judges that the areas pj to pj1 of all the slots of the filter sleeve are reduced, and pj1= pj
；
When R1 is more than R and less than R2, the control device does not adjust the area of each slit of the filter sleeve;
when R is larger than or equal to R2, the control device judges that the areas pj to pj2 of all the slots of the filter sleeve are increased, and sets pj2= pj
；
The control device presets a particle size R, and sets a first preset particle size R1 and a second preset particle size R2, j =1,2.
Specifically, the average particle size of the gravel of the target area obtained by the control device is compared with a preset particle size, and the area of each slit of the filter sleeve is adjusted, wherein when the average particle size obtained by the control device is smaller than or equal to a first preset particle size, the gravel particle size of the target area is smaller, in order to better prevent the gravel from being mixed with liquid, the control device judges that the area of the slit of the filter sleeve is reduced, and when the average particle size obtained by the control device is larger than or equal to a second preset particle size, the gravel particle size of the target area is larger, and the control device can increase the area of the slit of the filter sleeve, so that the liquid extraction efficiency is improved.
The filter sleeve is formed by spiral welding, and the slit of the filter sleeve is a 90-degree trapezoidal slit.
Particularly, the filter sleeve is formed by adopting spiral welding, the strength of the filter sleeve is obviously improved, the seam of the filter sleeve is a 90-degree trapezoidal seam, when tiny gravel enters the seam cavity, the gravel can be taken away by liquid, the blockage of the seam cavity is not easy to cause, the seam cavity is kept smooth, the abrasion speed of liquid flow to the seam opening can be greatly reduced, and the service life of the sieve tube is prolonged.
Please refer to fig. 3, which is a schematic diagram of a 90 ° trapezoid slit structure according to an embodiment of the present invention.
The control device acquires vulnerability E according to the number of drilled holes of the base pipe, the number of the slots of the filter sleeve and the area of each slot, sets that E = Na multiplied by si multiplied by pjk, compares the acquired vulnerability with a preset vulnerability E, and adjusts the distance between the slots on each circumference adjacent to the filter sleeve, wherein,
when E is less than or equal to E, the control device judges that the distance between every two adjacent circumferential slots of the filter sleeve is not adjusted;
when E is larger than E, the control device judges that the distance h to h 'between the adjacent circumferential slots of the filter sleeve is increased, and sets h' = h for production
；
Wherein, a =1,2,3,k =1,2.
Specifically, when the number of the drilled holes in the base pipe, the number of the slots in the filter sleeve and the area of each slot are large, the strength of the high-density slotted screen pipe formed later is low, and the high-density slotted screen pipe is easy to damage.
In the step S3, the control means acquires the tightness Y of the assembly and compares the acquired tightness with a preset tightness Y to adjust the length of the base pipe and the number of drilled holes, wherein,
when Y is less than or equal to Y1, the control device judges that the length of the base pipe is reduced and the drilling number of the base pipe is reduced;
when Y1 is more than Y and less than Y2, the control device judges that the drilling number of the base pipe is reduced;
when Y is larger than or equal to Y2, the control device does not adjust the length of the base pipe and the number of drilled holes, and the matching ring is sleeved on the assembly part by the splicing device;
wherein, controlling means predetermines elasticity Y, sets for first preset elasticity Y1, and the second is preset elasticity Y2.
Particularly, splicing apparatus cup joints filter sleeve and parent tube that will prepare and forms the sub-assembly, controlling means acquires the elasticity of sub-assembly, and compare the elasticity that acquires with preset elasticity and adjust the length of parent tube and parent tube drilling quantity, wherein, when the elasticity that controlling means acquireed is less than or equal to first preset elasticity, show that the combination between parent tube and the filter sleeve is more loose this moment, filter the cover and take place to remove under liquid impact very easily, consequently controlling means judges that the length and the drilling quantity of parent tube reduce, with the impact time and the dynamics of lightening liquid, when the elasticity that controlling means acquireed is greater than first preset elasticity and is less than second preset elasticity, show that the elasticity between parent tube and filter sleeve is less, it is close to preset standard comparatively, controlling means judges that to reduce the impact dynamics of parent tube drilling quantity in order to alleviate liquid, so that the sand control effect accords with preset standard.
In the step S4, the control device presets a sand content W, compares the obtained sand content W of the liquid in the high-density crack flushing sieve tube with the preset sand content, and secondarily adjusts the distance between adjacent circumferential cracks of the filter sleeve, wherein,
when W is less than or equal to W, the control device judges that the distance between every two adjacent circumferential slots of the filter sleeve is not adjusted;
when W is larger than W, the control device judges that the distance h 'to h'1 between every two adjacent circumferential slots of the filter sleeve is reduced, and sets
。
Specifically, the control device acquires the sand content in the high-density slit sieve tube in sampling detection, and adjusts the interval between the slits on each circumference of the filter sleeve according to the acquired sand content, wherein when the sand content acquired by the control device is greater than the preset sand content, the sand control capability of the high-density sand control sieve tube is low, because the control device judges that the interval between the slits on each circumference of the adjacent filter sleeve is reduced, the slit density of the filter sleeve is higher, and the filter capability is improved, so that the next high-density slit sieve tube meets the preset standard.
Specifically, the present invention does not limit the specific embodiment of the process for preparing the high-density slotted screen pipe, and the embodiment of the present invention provides a preferred embodiment, if the control device obtains 8 tons of liquid production in the target area per day, the control device sets the first preset liquid production amount to be 5 tons and the second preset liquid production amount to be 10 tons, so that the control device selects the second preset drilling amount of 250-350 holes/meter, wherein the first preset drilling amount is 100-250 holes/meter, the second preset drilling amount is 350-500 holes/meter, the control device determines the drilling amount of the base pipe to be 300 holes/meter, the drilling device prepares the base pipe according to the drilling amount determined by the control device, the control device obtains 1.4 tons/day of sand production in the target area, the control device sets the first preset sand production amount to be 0.5 tons/day, the second preset sand production amount to be 2 tons/day, so that the control device determines not to adjust the number of the filter sleeves, but still 800 holes/meter, and the standard number of the base pipe is less than the first preset hole amount and is more than 500 meters, and the second preset slotted hole amount is more than 1000 meters, and the area of the slotted holes/meter, and each of the slotted base pipe is kept as the standard number of 800 holes/meter 2 The control device obtains the average grain size of the gravel in the target area to be 25mm through the image obtaining device, the control device sets a first preset grain size to be 10mm and a second preset grain size to be 20mm, and therefore the control device judges that the area of each slit of the filter sleeve is 5cm 2 Increase to 10.6cm 2 The control device obtains the vulnerability e =300 × 800 × 10.6=2.544 × 10 6 Wherein N0=200 holes/meter, S0=200 holes/meter, P0=10cm 2 The control device presets vulnerability of 5 multiplied by 10 6 Therefore, the slotting device does not adjust the distance between adjacent slots on the circumference of the filter sleeve, and the slotting device has the area of 10.6cm according to 800 holes/meter 2 The distance between every two adjacent circumferential slots is 20mm to prepare a filter sleeve, the base pipe and the filter sleeve are sleeved by the splicing device to form an assembly, the control device obtains the tightness of the assembly to be 8.9, the first preset tightness 4 and the second preset tightness 8 are set by the control device, the control device does not adjust the length of the base pipe and the number of drilled holes, the length of the base pipe keeps 10m, the number of drilled holes is not 300 holes/meter, the assembly is sleeved by the splicing device to the assembly to form a high-density punched seam screen pipe, sampling detection is carried out, and in the detection process, the high-density punched seam screen pipe is formed and subjected to sampling detectionThe sand content of the liquid in the high-density crack screen pipe is 4.2% and is 3% higher than the preset sand content, so that the control device judges that the distance between every two adjacent peripheral cracks of the filter sleeve is reduced by 20mm to 9.3mm, and the next high-density crack screen pipe meets the preset standard.
Specifically, the preset values are not specifically limited, and those skilled in the art can set the preset values according to the actual situation of the target area.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (5)
1. A preparation process of a high-density punched seam screen pipe is characterized by comprising the following steps:
s1, drilling a target pipe by using a drilling device, wherein the control device compares the predicted liquid production amount of a target area with a preset liquid production amount to obtain the drilling quantity of a base pipe so as to enable the formed base pipe to meet a preset standard;
s2, the slotting device slotting the metal to be processed to form a filter sleeve, wherein the control device adjusts the slotting number of the filter sleeve according to the sand yield of a target area, compares the obtained slotting number with a preset number standard value, adjusts the area of each slotting when the slotting number does not meet a preset standard, judges that the slotting number meets the preset standard to obtain the average grain diameter of gravel of the target area, adjusts the area of each slotting according to the obtained average grain diameter of gravel, and when the slotting number and the area of each slotting both meet the preset standard, the control device obtains the vulnerability according to the drilling number of a base pipe, the slotting number of the filter sleeve and the area of each slotting, compares the obtained vulnerability with the preset vulnerability, and adjusts the distance between every two adjacent slotting of the filter sleeve to enable the formed filter sleeve to meet the preset standard;
s3, sleeving the base pipe formed in the step S1 and the filter sleeve formed in the step S2 by using a splicing device to form an assembly, acquiring the tightness of the assembly by using the control device, adjusting the length of the base pipe and the number of drilled holes according to the acquired tightness, and sleeving the assembly on the assembly by using the splicing device to form a high-density punched seam screen pipe when the tightness of the assembly acquired by using the control device meets a preset standard;
s4, sampling and detecting the formed high-density slit sieve tube, wherein the control device acquires the sand content of liquid in the high-density slit sieve tube in the detection process, compares the acquired sand content with a preset sand content, and adjusts the distance between adjacent circumferential slits of the filter sleeve so as to enable the sand control effect of the next high-density slit sieve tube to meet a preset standard;
in the step S1, the control device presets a fluid production amount Q, compares the obtained target zone predicted fluid production amount Q with the preset fluid production amount, obtains the number of drilled holes of the base pipe, wherein,
when Q is less than or equal to Q1, the control device selects a first preset drilling quantity N1 as the drilling quantity of the inner diameter of the base pipe;
when Q1 is more than Q and less than Q2, the control device selects a second preset drilling quantity N2 as the drilling quantity of the inner diameter of the base pipe;
when Q is larger than or equal to Q2, the control device selects a third preset drilling quantity N3 as the drilling quantity of the inner diameter of the base pipe;
the control device presets a liquid production amount Q, sets a first preset liquid production amount Q1 and a second preset liquid production amount Q2, presets a drilling number N, sets a first preset drilling number N1, a second preset drilling number N2 and a third preset drilling number N3;
in the step S2, the control device presets a sand yield G, compares the obtained sand yield G of the target region with a preset sand yield, and adjusts the number of slits of the filter sleeve, wherein,
when G is less than or equal to G1, the control device judges that the number of the slits of the filter sleeve is reduced from s to s1, and sets s1= sx (1- | G1-G |/G1);
when G1 is more than G and less than G2, the control device judges that the number of the slits of the filter sleeve is not adjusted;
when G is larger than or equal to G2, the control device judges that the number of the slits of the filter sleeve is increased to s2, and sets s2= sx (1 + | G2-G |/G2);
the control device presets a sand output G, sets a first preset sand output G1 and a second preset sand output G2;
the control device presets a quantity standard value S, the slotting device compares the obtained slotting quantity si of the filter sleeve with the preset quantity standard value and adjusts the area of each slotting of the filter sleeve, wherein,
when si is less than or equal to S1, the control device judges that the area of each slit of the filter sleeve is increased;
when S1 is larger than si and smaller than S2, the control device does not adjust the area of each slit of the filter sleeve, and the control device obtains the average grain size of the gravel in the target area;
when si is larger than or equal to S2, the control device judges that the area of each slit of the filter sleeve is reduced;
the control device is used for presetting a quantity standard value S, and setting a first preset quantity standard value S1 and a second preset quantity standard value S2, i =1,2;
when the number of the filter sleeve slits obtained by the control device is less than or equal to a first preset number standard value, the control device judges that the area p of each slit of the filter sleeve is increased to p1, and sets p1= pxx (1 + | S1-si |/S1/2), and when the number of the filter sleeve slits obtained by the control device is greater than or equal to a second preset number standard value, the control device judges that the area p of each slit of the filter sleeve is reduced to p2, and sets p2= pxx (1- | S2-si |/S2/2);
when the number of the slits obtained by the control device is smaller than a first preset number standard value and larger than a second preset number standard value, the control device obtains the average grain diameter R of the gravel in the target area, compares the obtained average grain diameter with the preset grain diameter R, and adjusts the area of each slit of the filter sleeve, wherein,
when R is less than or equal to R1, the control device judges that the areas pj to pj1 of the slits of the filter sleeve are reduced, and sets pj1= pj
；
When R1 is more than R and less than R2, the control device does not adjust the area of each slit of the filter sleeve;
when R is larger than or equal to R2, the control device judges that the areas pj to pj2 of all the slots of the filter sleeve are increased, and sets pj2= pj
；
The control device presets a particle size R, sets a first preset particle size R1, and sets a second preset particle size R2, j =1,2.
2. The process for preparing a high-density punched seam screen pipe according to claim 1, wherein the filter sleeve is formed by spiral welding, and the slit of the filter sleeve is a 90-degree trapezoidal slit.
3. The process for preparing the high-density punched seam screen pipe according to claim 2, wherein the control device obtains the vulnerability E according to the drilling number of the base pipe, the number of the slits of the filter sleeve and the area of each slit, and sets E = Na x si x pjk, the control device compares the obtained vulnerability with the preset vulnerability E and adjusts the distance between the slits on the adjacent circumferences of the filter sleeve, wherein,
when E is less than or equal to E, the control device judges that the distance between every two adjacent circumferential slots of the filter sleeve is not adjusted;
when E is larger than E, the control device judges that the distance h to h 'between every two adjacent circumferential slots of the filter sleeve is increased, and sets h' = h and
；
wherein, a =1,2,3,k =1,2.
4. The process for preparing a high-density perforated screen pipe according to claim 3, wherein, in the step S3, the control device acquires the tightness Y of the assembly and compares the acquired tightness with a preset tightness Y to adjust the length of the base pipe and the number of drilled holes, wherein,
when Y is less than or equal to Y1, the control device judges that the length of the base pipe is reduced and the drilling number of the base pipe is reduced;
when Y1 is more than Y and less than Y2, the control device judges that the number of the drilled holes of the base pipe is reduced;
when Y is larger than or equal to Y2, the control device does not adjust the length of the base pipe and the number of drilled holes, and the matching ring is sleeved on the assembly part by the splicing device;
wherein, controlling means predetermines elasticity Y, sets for first predetermined elasticity Y1, and second predetermined elasticity Y2.
5. The process for preparing a high-density slotted screen pipe according to claim 4, wherein in step S4, the control device presets a sand content W, and compares the sand content W of the liquid in the high-density slotted screen pipe with the preset sand content to perform secondary adjustment on the distance between the adjacent peripheral slots of the filter sleeve, wherein,
when W is less than or equal to W, the control device judges that the distance between every two adjacent circumferential slots of the filter sleeve is not adjusted;
when W is more than W, the control device judges that the distance h 'to h'1 between every two adjacent circumferential slots of the filter sleeve is reduced, and sets
。
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