CN107654220B - Construction method of integral layered filling device - Google Patents
Construction method of integral layered filling device Download PDFInfo
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- CN107654220B CN107654220B CN201710958459.6A CN201710958459A CN107654220B CN 107654220 B CN107654220 B CN 107654220B CN 201710958459 A CN201710958459 A CN 201710958459A CN 107654220 B CN107654220 B CN 107654220B
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- 238000011049 filling Methods 0.000 title claims abstract description 273
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000004576 sand Substances 0.000 claims abstract description 95
- 239000007788 liquid Substances 0.000 claims abstract description 81
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 32
- 238000001914 filtration Methods 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000003129 oil well Substances 0.000 claims description 21
- 238000009826 distribution Methods 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000009792 diffusion process Methods 0.000 claims description 6
- 239000010410 layer Substances 0.000 abstract description 71
- 239000002356 single layer Substances 0.000 abstract description 7
- 238000001125 extrusion Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 15
- 238000010008 shearing Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 241000282472 Canis lupus familiaris Species 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- E21B43/04—Gravelling of wells
Abstract
The invention relates to a construction method of an integral layered filling device. The technical scheme comprises the following steps: firstly, a pipe column is put down, secondly, first-layer ground filling and annular filling are carried out, steel balls are put into a releasing core pipe from a well mouth, a liquid circulation channel is established, then liquid is injected from the well mouth, a sleeve valve is closed, sand is filled into an oil layer, and ground filling is finished; then opening a sleeve valve, and injecting a sand carrying liquid into the releasing core pipe to complete annular filling; thirdly, performing second-layer ground filling and ring filling, and performing releasing operation after the ground filling and the ring filling are completed; the invention has the beneficial effects that: the invention solves the problem that the existing single-layer filling tool can not perform layered filling, also solves the problem that the inner filling pipe column and the outer filling pipe column in the existing layered extrusion filling tool are difficult to move, avoids the problems of switch failure and inaccurate positioning, easily realizes layered filling and annular filling of a plurality of oil layers, improves the operating efficiency and reduces the cost.
Description
Technical Field
the invention relates to a construction method of a petroleum well repairing tool, in particular to a construction method of an integral layered filling device.
Background
The sand production and filling of the oil well are one of the problems which need to be solved urgently in oil field development, and the main reason of the sand production of the oil well is that an oil reservoir stratum is loose cemented sandstone. In addition, in the middle and later stages of oil field development, the reservoir framework can be greatly damaged due to long-term water injection or gas injection exploitation, and sand production of an oil well is caused. The sand production hazard of the oil well mainly represents three aspects: firstly, burying a production layer with sand to cause production reduction or production stop of an oil well; secondly, high-speed sand grains cause the accelerated abrasion of ground and underground equipment; and thirdly, sand production causes stratum to be voided and collapsed, so that a casing is damaged, an oil well is scrapped, and the like. The sand production of the oil well causes great reduction of the oil well yield, sharp increase of the operation cost and serious economic loss. In order to ensure normal production by sand production of oil wells, various sand control technologies including chemical sand control and filling technologies are widely researched and applied in various oil fields. At present, a common solution is to fill sand in the sand producing part of an oil well, so that the sand producing and empty stratum can be effectively filled, and the industry is also called ground filling; in addition, the annulus between the screen and the casing is preferably lined with sand, i.e., the stronger the wall, the more beneficial it is for later oil recovery, where the sand pack process is referred to in the industry as annular packing.
At present, most of filling tools are single-layer filling methods, and most of oil wells are in a state of a plurality of oil layers, so that the single-layer filling tools cannot meet the layered gravel filling of the oil layers, the single-layer filling tools are required to be used for filling a pipe column layer by layer one by one, and one multi-layer well needs to be subjected to pipe column construction for multiple times, so that the operation is complex, the construction is troublesome, the efficiency is low, and the production cost is increased greatly.
The Chinese patent document No. 1294337, entitled "separate layer extrusion filling sand control tubular column", is suitable for extrusion filling sand control process of multiple oil layers and also can be used for single oil layer. The packer comprises an inner filling pipe column and an outer filling pipe column, wherein the inner filling pipe column comprises a washing pipe and an inner filling tool, the outer filling pipe column comprises a top suspension packer, an outer filling tool and a sand filter pipe, and a filling opening is formed in the outer filling tool. The inner filling pipe column is provided with a setting releasing hand, and the outer filling pipe column is provided with an interlayer packer. When the setting releasing hand is pressed to enable the top suspension packer to be set, the setting releasing hand is separated from the top suspension packer, the inner filling pipe column can move up and down in the outer filling pipe column to set the interlayer packer, and the inner filling pipe column is matched with the outer filling tool to extrude and fill the stratum. Improving the sand control effect and the validity period. The next time of the pipe column can finish the construction of the layered extrusion filling sand prevention of a plurality of oil layers, thereby greatly reducing the production cost and the labor intensity of workers. However, there are problems in that: the invention adopts the inner filling pipe column and the outer filling pipe column which are in dynamic fit, and the two pipe columns move mutually and are not easy to position; in addition, the annular filling is carried out after the ground filling is finished, namely, if the ground filling is finished, a small amount of sand is certainly present between the inner filling pipe column and the outer filling pipe column if the ground filling is filled, and the problem that the small amount of sand is present mainly caused by the creeping of the spring is solved, so that the inner filling pipe column and the outer filling pipe column are difficult to move when the annular filling is carried out, even a channel cannot be opened, and a circulating channel for the annular filling cannot be established; if the sand is not packed, the ground packing does not achieve the desired packing effect. Therefore, the split design of the inner filling pipe column and the outer filling pipe column has the defects that the two designs are difficult to reconcile.
Disclosure of Invention
The invention aims to solve the defects in the prior art, provides a construction method of an integral layered filling device, solves the problem that a single-layer filling tool cannot perform layered filling, also overcomes the problem that an inner filling pipe column and an outer filling pipe column in the existing design are difficult to move, simultaneously realizes oil-separated layer ground filling and annular filling, and improves the efficiency.
The invention provides a construction method of an integral layered filling device, which adopts the technical scheme that the construction method comprises the following steps:
Firstly, lower pipe column: a blind plug (27) is put into a casing of an oil well, then a sand filtering pipe (28) is put into the casing, the lower part of the sand filtering pipe (28) is connected with the blind plug (27), then a first group of filling tools (10) are put into the casing, the sand filtering pipe (28) is connected with the filling tools (10) through a lower joint (3) of the filling tools, and meanwhile, a catcher on the upper part of a releasing core pipe (11) is connected with a lower joint (2) of a releasing core pipe of a second group of filling tools (10) through a compensator; two or more groups of filling tools are formed by connecting in sequence, and a packer (7) is arranged at the upper part of each group of filling tools (10);
Secondly, performing first-layer ground filling and ring filling: a first layer of steel balls with corresponding diameters are thrown into the releasing core pipe (11) from a wellhead, the steel balls fall on the top of a ball seat (12) of a filling tool of the first layer, then injecting liquid into the releasing core tube (11) from the well mouth, setting the packer (7) when the pressure reaches 18 MPa or more, moving the ball seat (12) downwards to the boss to stop, at the moment, the steel ball is positioned at the lower side of the inner filling hole, the inner filling hole is opened, a lower circulation channel of a lower joint (3) of a filling tool, an upper circulation channel of a layered water distribution joint (5), a liquid conversion cavity and an annular space between an upper joint (6) of the filling tool and the releasing core pipe (11) are formed by the releasing core pipe (11) passing through the inner filling hole, the outer filling hole, the annular space between the filling tool (10) and the sleeve, the annular space between the lower joint (3) of the filling tool and the releasing core pipe (11), and the annular space between the upper joint (6) of the filling tool and the releasing core pipe (11) is filled; at the moment, a sleeve valve of a wellhead is closed, a circulating channel of liquid is closed, sand carrying liquid is injected into a releasing core pipe (11), the pressure is gradually increased, sand is filled into an oil layer at the lowest layer of the oil well, ground filling is carried out until the set value of the filling pressure of the oil layer is reached, pressurizing is stopped, pressure diffusion is carried out, and ground filling is finished; opening a sleeve valve of a wellhead, opening a circulating channel of liquid, injecting sand carrying liquid into the releasing core pipe (11), gradually increasing the pressure, allowing the sand carrying liquid to flow out of the sleeve of the wellhead through the circulating channel of the liquid after the sand carrying liquid passes through a sand filtering pipe, settling sand in an annulus between the sleeve and the sand filtering pipe until the annulus is filled, and completing the annular filling of a first layer;
thirdly, performing second-layer ground filling and ring filling: a second layer of steel balls with corresponding diameters are thrown into the releasing core pipe (11) from the wellhead, the steel balls fall on the top of a ball seat (12) of a filling tool of the second layer, then liquid is injected into the releasing core pipe (11) from the wellhead, the pressure reaches 18 MPa or above, a packer (7) at the upper part of the filling tool of the second layer is sealed, the ball seat (12) moves downwards to a boss and stops, at the moment, the steel balls are located on the lower side of an inner filling hole of the filling tool of the second layer, the inner filling hole is opened, a downward channel of the releasing core pipe (11) is blocked, and the liquid enters a liquid circulation channel of the filling tool of the second layer;
At the moment, the sleeve valve of the wellhead is closed again, the circulating channel of the liquid of the second layer filling tool is closed, the sand carrying liquid is injected into the releasing core tube (11), the pressure is gradually increased, sand is filled into the oil layer of the second layer of the oil well, earth filling is carried out until the set value of the filling pressure of the oil layer is reached, the pressurizing is stopped, pressure diffusion is carried out, and the earth filling of the second layer is finished; opening a casing valve of the wellhead, opening a circulating channel of liquid, injecting sand carrying liquid into the releasing core pipe (11), gradually increasing the pressure, allowing the sand carrying liquid to pass through a sand filtering pipe, allowing the liquid to flow out of the casing of the wellhead through the circulating channel of the liquid of the filling tool of the second layer, settling sand in an annular space between the casing of the second layer and the sand filtering pipe until the second layer is filled completely, and completing annular filling of the second layer;
Preferably, after the ground filling and the ring filling are finished, the releasing operation is carried out: a filling tool upper joint (6), a filling tool lower joint (3) and a layered water distribution joint (5) form a well-leaving pipe column, a releasing core pipe (11) is lifted up through a wellhead device, the releasing core pipe (11) drives a sealing sliding sleeve (4) to move upwards through a shear pin, when the releasing core pipe moves to a shear boss, the shear boss interacts with the top end of the sealing sliding sleeve (4), so that the shear pin is sheared, an outer filling hole is closed, and a sand-filtering pipe column formed by the well-leaving pipe column and a sand-filtering pipe is left at the position of a corresponding oil layer; the releasing core tube (11) drives the compensator, the ball seat and the steel ball to be lifted out of the well mouth, and releasing operation is completed.
Preferably, step three is repeated to realize three or more layers of filling and ring filling.
the invention has the beneficial effects that: firstly, the invention solves the problem that the existing single-layer packer can not pack in a layering way, overcomes the problem that the two pipe columns are difficult to connect, reduces the production cost and saves time and labor;
Secondly, the invention adopts a plurality of groups of filling tools to be matched for use, realizes the layered filling of a plurality of oil layers, and the releasing core tube of each filling tool is matched with the well-remaining tubular column, when the oil layer is filled in the vacancy, the inner filling hole is opened through the matching of the steel ball and the ball seat, the inner filling hole is communicated with the outer filling hole, the liquid circulation channel is closed, and the filling is realized; when filling the annular space between the sleeve and the sand filter, the annular filling is realized by opening the liquid circulation channel; in addition, when a user releases the hand, the release core tube drives the annular sliding sleeve to move upwards, the shearing boss cuts the shearing nail, the sealing of the annular sliding sleeve and the inner filling hole is realized, and the annular sliding sleeve is matched with the inner filling hole, so that a spring in the prior art is cancelled, a small amount of sand caused by the creeping of the spring is prevented from settling, the filling hole is closed more reliably through the matching of the shearing nail and the sealing sliding sleeve, and the problem of failure in closing the filling hole is avoided;
thirdly, the compensator and the catcher are quickly connected, so that the pipe columns are quickly connected, the compensator can stretch out and draw back, construction is facilitated, and the operation efficiency is improved; in addition, the upper circulation channel in the upper joint of the filling tool can be well communicated with the lower circulation channel of the lower joint of the filling tool by designing the liquid conversion cavity, so that the mechanical manufacturing cost is reduced, and the communication between the upper circulation channel and the lower circulation channel is easy to complete;
In a word, the invention solves the problem that the existing single-layer filling tool can not perform layered filling, also solves the problem that the inner filling pipe column and the outer filling pipe column in the existing layered extrusion filling tool with split design are difficult to move due to a small amount of sand, avoids the problems of switch failure and inaccurate positioning, easily realizes layered filling and annular filling of a plurality of oil layers, can better realize annular filling by establishing a liquid circulation channel, improves the operation efficiency and reduces the cost.
Drawings
FIG. 1 is a schematic diagram of a set of filling tools of the present invention;
FIG. 2 is a schematic view of the filling tool after dropping a steel ball;
FIG. 3 is a schematic diagram of the structure of the compensator;
FIG. 4 is a schematic view of the configuration of the trap;
FIG. 5 is a schematic view of the construction of the lower joint of the filling tool;
FIG. 6 is a schematic illustration of a two-layer pack;
FIG. 7 is a schematic illustration of a three-layer pack;
in the upper diagram: the packer comprises a compensator 1, a lower joint 2 of a releasing core pipe, a lower joint 3 of a filling tool, a sealing sliding sleeve 4, a layered water-splitting joint 5, an upper joint 6 of the filling tool, a packer 7, a shearing boss 8, a catcher 9, a filling tool 10, a releasing core pipe 11, a ball seat 12, a sealing cavity 13, an inner pipe 14, a thread buckle 15, a horse teeth buckle 16, a snap ring 17, a shear pin 18, a liquid conversion cavity 19, a telescopic support ring 20, a support boss 21, a groove 22, an outer filling hole 23, an outer pipe 24, a pipe thread 25, a sealing ring 26, a blind plug 27, a sand filter pipe 28, a core pipe 29, a flushing pipe 30 and a steel ball 31.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Embodiment 1, referring to fig. 1, the present invention provides an integrated layered filling apparatus, which has the following technical scheme: the packer mainly comprises two groups of filling tools 10, a sand filtering pipe 28, a washpipe 30 and a packer 7 which are connected, wherein the inner cavities of the filling tools 10 are connected through the washpipe 30, the outer walls of the filling tools are connected through the sand filtering pipe 28, the packer 7 is arranged at the upper part of each group of filling tools 10, a blind plug 27 is arranged at the bottom of the lowest group of filling tools 10, and each group of filling tools 10 are respectively arranged at the corresponding oil layer filling positions; the filling tool 10 comprises a filling tool lower joint 3, a sealing sliding sleeve 4, a layered water distribution joint 5, a filling tool upper joint 6, a releasing core pipe 11 and a ball seat 12, wherein the layered water distribution joint 5 is connected between the filling tool upper joint 6 and the filling tool lower joint 3 to form a well-leaving pipe column, the releasing core pipe 11 is fixed in the inner cavity of the well-leaving pipe column, a boss is arranged in the inner cavity of the releasing core pipe 11, the ball seat 12 is arranged above the boss, and an inner filling hole is also arranged above the boss; the inner wall of the layered water diversion joint 5 is provided with a sealed cavity, the outer filling hole is closed or opened by matching with a sealing sliding sleeve 4, an upper circulation channel (refer to a dotted line part in fig. 1) which is vertically communicated is arranged in the layered water distribution joint 5, the upper part of the layered water distribution joint is communicated with an annular space between the filling tool upper joint 6 and the releasing core pipe 11, the lower part of the layered water distribution joint is communicated with a lower circulation channel (refer to a dotted line part in fig. 1) arranged in the filling tool lower joint 3 through a liquid conversion cavity, so that the releasing core pipe 11 passes through the inner filling hole, the outer filling hole, the annular space between the filling tool 10 and the casing pipe, the annular space between the filling tool lower joint 3 and the releasing core pipe 11, the lower circulation channel of the filling tool lower joint 3, the liquid conversion cavity and the upper circulation channel of the layered water distribution joint 5, the annular space between the filling tool upper joint 6 and the releasing core pipe 11, and.
It should be noted that: the upper circulation channel is not crossed with the outer filling hole and is not communicated with the outer filling hole, and the upper circulation channel is only communicated with the lower circulation channel, so that the sand-carrying liquid or the liquid is prevented from directly entering the upper circulation channel through the outer filling hole.
the sealing cavity of the inner wall of the layered water diversion connector 5 is matched with the sealing sliding sleeve 4, the upper side of the sealing cavity is provided with a shearing boss 8, the lower side of the sealing cavity is provided with a supporting boss 21, the lower side of the sealing sliding sleeve 4 is fixedly connected with the releasing core tube 11 through a shear pin, and when the releasing core tube 11 is lifted up, the shearing boss interacts with the top end of the sealing sliding sleeve 4, so that the shear pin is sheared, and the sealing sliding sleeve 4 seals the outer filling hole of the layered water diversion connector 5; in addition, a sealing ring is arranged on the shearing boss 8 to realize the sealing of the releasing core pipe 11 and the inner wall of the layered water distribution joint 5; the inner side and the outer side of the sealing sliding sleeve 4 respectively realize the sealing of the releasing core tube 11 and the layered water distribution joint 5 through the sealing ring.
In addition, a liquid conversion cavity is formed between the lower side of the inner wall of the layered water distribution joint 5 and the top of the lower joint 3 of the filling tool, wherein the top of the lower joint 3 of the filling tool is locally convex, and the liquid conversion cavity 19 is formed by contacting the local convex with the layered water distribution joint 5, a telescopic support ring 20 is arranged in the liquid conversion cavity 19, and the sealing sliding sleeve 4 is limited in the sealing cavity of the inner wall of the layered water distribution joint 5 through the matching of the telescopic support ring and a notch on the outer side of the lower part of the sealing sliding sleeve 4. Therefore, the problem of a small amount of sand existing due to the creeping of the spring in the comparison document is avoided, and the filling hole is more reliably closed through the matching of the shear pin and the sealing sliding sleeve.
Referring to fig. 3, the lower end of the lower joint 3 of the filling tool of the present invention is connected with a washing pipe 30, the compensator 1 is connected through the washing pipe 30, the compensator 1 includes an inner pipe 14, an outer pipe 24 and a sealing ring 26, the lower end of the outer pipe 24 is provided with an inner boss which is matched with the outer boss on the top of the inner pipe 14, the outer side of the outer boss is provided with one or more sealing rings 26, the expansion and contraction of the compensator 1 are realized through the up-and-down movement of the inner pipe 14 in the inner cavity of the outer pipe 24, and the top of the inner cavity of the outer pipe 24.
further, referring to fig. 3, a plurality of button dogs 16 are provided on the outer wall of the lower portion of the inner tube 14, and the button dogs 16 passing through the inner tube 14 are engaged with the catcher 9 on the top of the core releasing pipe 11 of the next set of filling tool 10; a plurality of groups of snap rings 17 corresponding to the horse teeth buttons are arranged in the catcher 9 and matched with each other, and the snap rings are in a round platform-shaped structure.
each set of filling tools 10 is provided with a ball seat 12, the inner diameter of each ball seat 12 increases from the lower layer filling tool to the upper layer filling tool, and the diameter of the corresponding steel ball 31 also increases.
Referring to fig. 2, after a steel ball 31 is put into a releasing core tube 11, the ball seat 12 moves downwards to a boss in the releasing core tube through liquid pressing, and the steel ball 31 is positioned at the lower side of an inner filling hole; when the releasing core tube 11 is lifted up, the ball seat 12 and the steel ball are lifted out of the wellhead through the support of the boss, and it needs to be explained that: a casing valve is arranged at the position of a wellhead casing, wherein when the casing valve is closed and liquid or sand-carrying liquid is injected downwards, sand can be filled into the stratum, namely, ground filling can be realized; when the valve of the casing is opened and liquid or sand carrying liquid is injected, sand can be filled in the annular space between the sand filtering pipe and the casing, namely annular filling.
referring to the attached figure 6, the construction method of the integral layered filling device provided by the invention comprises the following steps:
Firstly, lower pipe column: a blind plug 27 is put into a casing of an oil well, then a sand screen pipe 28 is put into the casing, the lower part of the sand screen pipe 28 is connected with the blind plug 27, then a first group of filling tools 10 are put into the casing, the sand screen pipe 28 is connected with the filling tools 10 through a lower connector 3 of the filling tools, and meanwhile, a catcher on the upper part of a releasing core pipe 11 is connected with a lower connector 2 of a releasing core pipe of a second group of filling tools 10 through a compensator; two or more groups of filling tools are formed by connecting in sequence, and the upper part of each group of filling tools 10 is provided with a packer 7;
Secondly, performing first-layer ground filling and ring filling: a first layer of steel balls 31 with corresponding diameters are put into a releasing core pipe 11 from a wellhead, the steel balls fall on the top of a ball seat 12 of a filling tool in the first layer, then liquid is injected into the releasing core pipe 11 from the wellhead, the pressure reaches 18 MPa or more, a packer 7 is set (shown in figure 6 as a schematic diagram when the packer is not expanded, the packer can be expanded to realize the setting after the packer is pressed by the liquid when the packer is put into the well, the ball seat 12 moves downwards to a boss and stops, at the moment, the steel balls are positioned at the lower side of an inner filling hole, the inner filling hole is opened to form an annulus between the upper joint 6 of the filling tool and the releasing core pipe 11 through the inner filling hole, the outer filling hole, the annular between the filling tool 10 and a casing, the annulus between the lower joint 3 of the filling tool and the releasing core pipe 11, a lower circulation channel of the lower joint 3 of the filling tool, a liquid conversion cavity and an upper circulation channel of a layered water filling, a liquid circulation channel is formed in the whole; at the moment, a sleeve valve of a wellhead is closed, a circulating channel of liquid is closed, sand carrying liquid is injected into the releasing core tube 11, the pressure is gradually increased, sand is filled into the oil layer at the lowest layer of the oil well, ground filling is carried out until the set value of the filling pressure of the oil layer is reached, pressurizing is stopped, pressure diffusion is carried out, and ground filling is finished; opening a sleeve valve of a wellhead, opening a circulating channel of liquid, injecting sand carrying liquid into the releasing core tube 11, gradually increasing the pressure, allowing the sand carrying liquid to flow out of the sleeve of the wellhead through the circulating channel of the liquid after the sand carrying liquid passes through a sand filtering pipe, allowing sand to settle in an annulus between the sleeve and the sand filtering pipe until the annulus is filled, and completing the first-layer annular filling;
thirdly, performing second-layer ground filling and ring filling: a second layer of steel balls with corresponding diameters are thrown into the releasing core pipe 11 from the wellhead, the steel balls fall on the top of a ball seat 12 of a filling tool of the second layer, then liquid is injected into the releasing core pipe 11 from the wellhead, the pressure reaches 18 MPa or above, a packer 7 on the upper portion of the filling tool of the second layer is sealed, the ball seat 12 moves downwards to a boss and stops, at the moment, the steel balls are located on the lower side of an inner filling hole of the filling tool of the second layer, the inner filling hole is opened, a downward channel of the releasing core pipe 11 is blocked, and the liquid enters a liquid circulation channel of the filling tool of the second layer;
At the moment, the sleeve valve of the wellhead is closed again, the circulation channel of the liquid of the second layer filling tool is closed, the sand carrying liquid is injected into the releasing core tube 11, the pressure is gradually increased, sand is filled into the oil layer of the second layer of the oil well, ground filling is carried out until the set value of the filling pressure of the oil layer is reached, the pressurizing is stopped, pressure diffusion is carried out, and the ground filling of the second layer is completed; opening a casing valve of the wellhead, opening a circulating channel of liquid, injecting sand carrying liquid into the releasing core pipe 11, gradually increasing the pressure, allowing the sand carrying liquid to flow out of the casing of the wellhead through the circulating channel of the liquid of the filling tool of the second layer after the sand carrying liquid passes through the sand filtering pipe, allowing sand to settle in an annular space between the casing of the second layer and the sand filtering pipe until the second layer is filled completely, and completing annular filling of the second layer;
Fourthly, releasing the hands: a filling tool upper joint 6, a filling tool lower joint 3 and a layered water distribution joint 5 form a well-remaining pipe column, a releasing core pipe 11 is lifted up through a wellhead device, the releasing core pipe 11 drives a sealing sliding sleeve 4 to move upwards through shear pins, when the sealing sliding sleeve moves to a shear boss, the shear boss interacts with the top end of the sealing sliding sleeve 4, so that the shear pins are sheared, an outer filling hole is closed, and the pipe column for filtering sand formed by the well-remaining pipe column and a sand filtering pipe is left at the position of a corresponding oil layer, so that a sand filtering function is provided for subsequent oil extraction operation; the releasing core tube 11 drives the connected compensator, the ball seat of the inner cavity and the steel ball to be lifted out of the well mouth together, and releasing operation is completed.
embodiment 2 referring to fig. 7, the present invention is different from embodiment 1 in that three sets of filling tools are lowered into an oil well to perform a stratified filling operation on three sets of oil zones. And during specific operation, the third step can be repeated, and the underground three-group layered filling tool is connected and put into the well, so that layered filling and annular filling of three oil layers are realized.
example 3, the present invention differs from examples 1 and 2 in that: the outer wall of the lower part of the inner tube 14 is provided with a plurality of snap rings 17, and the snap rings of the inner tube 14 are matched with the catcher 9 at the top of the releasing core tube 11 of the next group of filling tools 10; a plurality of groups of horse teeth buckles corresponding to the snap rings are arranged in the catcher 9 and matched with the snap rings, and the snap rings are of round table-shaped structures.
the structure of the invention can also complete the effective connection and fixation of the releasing core tube (11) and each group of filling tools (10), and can also play the role of the embodiment 1 or 2.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (3)
1. A construction method of an integral layered filling device is characterized by comprising the following steps:
firstly, lower pipe column: a blind plug (27) is put into a casing of an oil well, then a sand filtering pipe (28) is put into the casing, the lower part of the sand filtering pipe (28) is connected with the blind plug (27), then a first group of filling tools (10) are put into the casing, the sand filtering pipe (28) is connected with the filling tools (10) through a lower joint (3) of the filling tools, and meanwhile, a catcher on the upper part of a releasing core pipe (11) is connected with a lower joint (2) of a releasing core pipe of a second group of filling tools (10) through a compensator; two or more groups of filling tools are formed by connecting in sequence, and a packer (7) is arranged at the upper part of each group of filling tools (10);
secondly, performing first-layer ground filling and ring filling: a first layer of steel balls with corresponding diameters are thrown into the releasing core pipe (11) from a wellhead, the steel balls fall on the top of a ball seat (12) of a filling tool of the first layer, then liquid is injected into the releasing core pipe (11) from the wellhead, the pressure reaches 18 MPa or more, a packer (7) is sealed, the ball seat (12) moves downwards to a boss and stops, at the moment, the steel balls are located on the lower side of an inner filling hole, and the inner filling hole is opened; the inner wall of the layered water diversion joint (5) is provided with a sealed cavity which is matched with the closing or opening of the external filling hole through a sealed sliding sleeve (4), an upper circulating channel which is communicated up and down is arranged in the layered water distribution joint (5), the upper part of the layered water distribution joint is communicated with an annulus between the upper joint (6) of the filling tool and the releasing core pipe (11), the lower part of the layered water distribution joint is communicated with a lower circulating channel arranged in the lower joint (3) of the filling tool through a liquid conversion cavity, the releasing core pipe (11) passes through an inner filling hole, an outer filling hole, an annulus between the filling tool (10) and a sleeve, an annulus between the lower joint (3) of the filling tool and the releasing core pipe (11), a lower circulating channel of the lower joint (3) of the filling tool, a liquid conversion cavity and an upper circulating channel of the layered water distribution joint (5), and the annulus between the upper joint (6) of the filling tool and the releasing core pipe (11) forms a liquid circulating channel; at the moment, a sleeve valve of a wellhead is closed, a circulating channel of liquid is closed, sand carrying liquid is injected into a releasing core pipe (11), the pressure is gradually increased, sand is filled into an oil layer at the lowest layer of the oil well, ground filling is carried out until the set value of the filling pressure of the oil layer is reached, pressurizing is stopped, pressure diffusion is carried out, and ground filling is finished; opening a sleeve valve of a wellhead, opening a circulating channel of liquid, injecting sand carrying liquid into the releasing core pipe (11), gradually increasing the pressure, allowing the sand carrying liquid to flow out of the sleeve of the wellhead through the circulating channel of the liquid after the sand carrying liquid passes through a sand filtering pipe, settling sand in an annulus between the sleeve and the sand filtering pipe until the annulus is filled, and completing the annular filling of a first layer;
thirdly, performing second-layer ground filling and ring filling: a second layer of steel balls with corresponding diameters are thrown into the releasing core pipe (11) from the wellhead, the steel balls fall on the top of a ball seat (12) of a filling tool of the second layer, then liquid is injected into the releasing core pipe (11) from the wellhead, the pressure reaches 18 MPa or above, a packer (7) at the upper part of the filling tool of the second layer is sealed, the ball seat (12) moves downwards to a boss and stops, at the moment, the steel balls are located on the lower side of an inner filling hole of the filling tool of the second layer, the inner filling hole is opened, a downward channel of the releasing core pipe (11) is blocked, and the liquid enters a liquid circulation channel of the filling tool of the second layer;
at the moment, the sleeve valve of the wellhead is closed again, the circulating channel of the liquid of the second layer filling tool is closed, the sand carrying liquid is injected into the releasing core tube (11), the pressure is gradually increased, sand is filled into the oil layer of the second layer of the oil well, earth filling is carried out until the set value of the filling pressure of the oil layer is reached, the pressurizing is stopped, pressure diffusion is carried out, and the earth filling of the second layer is finished; and opening a casing valve of the wellhead, opening a circulating channel of the liquid, injecting the sand carrying liquid into the releasing core pipe (11), gradually increasing the pressure, allowing the sand carrying liquid to pass through a sand filtering pipe, allowing the liquid to flow out of the casing of the wellhead through the circulating channel of the liquid of the filling tool on the second layer, settling sand in an annular space between the casing of the second layer and the sand filtering pipe until the second layer is filled completely, and completing annular filling of the second layer.
2. the construction method of the integral type layered filling apparatus according to claim 1, wherein: after the ground filling and the ring filling are finished, the releasing operation is carried out: a filling tool upper joint (6), a filling tool lower joint (3) and a layered water distribution joint (5) form a well-leaving pipe column, a releasing core pipe (11) is lifted up through a wellhead device, the releasing core pipe (11) drives a sealing sliding sleeve (4) to move upwards through a shear pin, when the releasing core pipe moves to a shear boss, the shear boss interacts with the top end of the sealing sliding sleeve (4), so that the shear pin is sheared, an outer filling hole is closed, and a sand-filtering pipe column formed by the well-leaving pipe column and a sand-filtering pipe is left at the position of a corresponding oil layer; the releasing core tube (11) drives the compensator, the ball seat and the steel ball to be lifted out of the well mouth, and releasing operation is completed.
3. the construction method of the integral type layered filling apparatus according to claim 1, wherein: and repeating the third step to realize three or more layers of layered filling and ring filling.
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| CN201710958459.6A CN107654220B (en) | 2017-10-16 | 2017-10-16 | Construction method of integral layered filling device |
| CN201910925597.3A CN110700802B (en) | 2017-10-16 | 2017-10-16 | Construction method of petroleum well repairing tool |
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| CN109826596A (en) * | 2019-02-22 | 2019-05-31 | 宋肖萍 | A kind of application method of the double-layer double-direction device for filling for oil production by layer |
| CN112814629A (en) * | 2019-11-18 | 2021-05-18 | 东营市蕴东石油科技有限公司 | One-time washing and two-way filling sand prevention pipe column |
| CN112360402B (en) * | 2021-01-12 | 2021-04-27 | 东营市蕴东石油科技有限公司 | Multi-turn gravel packing tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0123393A2 (en) * | 1983-04-22 | 1984-10-31 | Halliburton Company | Ball type shut in tool for wells |
| CN1603574A (en) * | 2004-11-03 | 2005-04-06 | 中国石化胜利油田有限公司采油工艺研究院 | Layered pipe column for squeeze packing sand control process |
| CN103437742A (en) * | 2013-07-18 | 2013-12-11 | 中国石油化工股份有限公司 | Sand-replenishing tool for rapidly opening and closing filling channel |
| CN103510928A (en) * | 2013-10-11 | 2014-01-15 | 王志强 | Layered oil exploitation device |
| CN203531867U (en) * | 2013-10-25 | 2014-04-09 | 中国石油化工集团公司 | Primary sand prevention letting-in tool and secondary resanding extruding and filling tool of primary sand prevention letting-in tool |
| CN105201460A (en) * | 2015-10-27 | 2015-12-30 | 胜利油田金岛实业有限责任公司 | Integral type high-toughness sand filter pipe |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3901271A1 (en) * | 1989-01-18 | 1990-07-26 | Brieden Karl Bau Beteiligung | Conveying tube for suspended debris, in particular for pneumatic stowing in underground operations |
| CN2539840Y (en) * | 2002-03-11 | 2003-03-12 | 张建光 | Multifunctional sand-proof tubular column |
| CN200982162Y (en) * | 2006-11-24 | 2007-11-28 | 中国石化股份胜利油田分公司采油工艺研究院 | Stratified test sand control pipe |
| CN201025007Y (en) * | 2007-02-15 | 2008-02-20 | 周思宏 | Two-section hierarchical high pressure filling and sand prevention tool |
| US8528641B2 (en) * | 2009-09-03 | 2013-09-10 | Baker Hughes Incorporated | Fracturing and gravel packing tool with anti-swabbing feature |
| CN201991501U (en) * | 2011-03-10 | 2011-09-28 | 中国石油化工股份有限公司 | Prepacked precise compound sand-filtering tube |
| CN202073544U (en) * | 2011-05-29 | 2011-12-14 | 纪红 | Sand control packing device for sand production well |
| CN103015952B (en) * | 2012-12-12 | 2015-07-15 | 山东瑞丰石油技术有限责任公司 | Method for packing multiple layers of gravel in one time |
| CN203050777U (en) * | 2012-12-17 | 2013-07-10 | 淄博矿业集团有限责任公司埠村煤矿 | Shakeout filling device at water outlet position of drilling hole |
| CN203394466U (en) * | 2013-08-01 | 2014-01-15 | 臧鑫赫 | Upper-sealing lower-exploitation squeeze packing integrated device |
| DK3041338T3 (en) * | 2013-09-04 | 2020-03-16 | Indigo Ag Inc | Agricultural endophyte plant compositions and methods of use |
| US9476284B2 (en) * | 2014-06-24 | 2016-10-25 | Saudi Arabian Oil Company | Apparatus and methodology for continuous down hole sand screen fill removal |
| CN104775802B (en) * | 2015-03-26 | 2017-02-22 | 中国石油化工股份有限公司 | Separate-layer fracturing sand control string for thermal production well and sand control method thereof |
-
2017
- 2017-10-16 CN CN201910925597.3A patent/CN110700802B/en active Active
- 2017-10-16 CN CN201710958459.6A patent/CN107654220B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0123393A2 (en) * | 1983-04-22 | 1984-10-31 | Halliburton Company | Ball type shut in tool for wells |
| CN1603574A (en) * | 2004-11-03 | 2005-04-06 | 中国石化胜利油田有限公司采油工艺研究院 | Layered pipe column for squeeze packing sand control process |
| CN103437742A (en) * | 2013-07-18 | 2013-12-11 | 中国石油化工股份有限公司 | Sand-replenishing tool for rapidly opening and closing filling channel |
| CN103510928A (en) * | 2013-10-11 | 2014-01-15 | 王志强 | Layered oil exploitation device |
| CN203531867U (en) * | 2013-10-25 | 2014-04-09 | 中国石油化工集团公司 | Primary sand prevention letting-in tool and secondary resanding extruding and filling tool of primary sand prevention letting-in tool |
| CN105201460A (en) * | 2015-10-27 | 2015-12-30 | 胜利油田金岛实业有限责任公司 | Integral type high-toughness sand filter pipe |
Non-Patent Citations (1)
| Title |
|---|
| 新型防砂管柱的研究与应用;曲慧 等;《石油机械》;20111210;第39卷(第12期);全文 * |
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| CN110700802A (en) | 2020-01-17 |
| CN110700802B (en) | 2021-10-08 |
| CN107654220A (en) | 2018-02-02 |
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