CN104695915B - Sand washing and prevention integrated completion pipe string and control method thereof - Google Patents

Sand washing and prevention integrated completion pipe string and control method thereof Download PDF

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Publication number
CN104695915B
CN104695915B CN201510114526.7A CN201510114526A CN104695915B CN 104695915 B CN104695915 B CN 104695915B CN 201510114526 A CN201510114526 A CN 201510114526A CN 104695915 B CN104695915 B CN 104695915B
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China
Prior art keywords
sand
pipe
prevention integrated
rush
oil
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CN104695915A (en
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李江涛
曹培军
许清华
韩军军
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SHANDONG PURUISIDE PETROLEUM TECHNOLOGY Co Ltd
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SHANDONG PURUISIDE PETROLEUM TECHNOLOGY Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02Subsoil filtering
    • E21B43/04Gravelling of wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

Abstract

The invention refers to the technical field of sand prevention of oil gas water well, and particularly relates to a sand washing and prevention integrated completion pipe string and a control method of the sand washing and prevention integrated completion pipe string. The completion pipe string comprises an oil pipe, which is arranged in a sleeve pipe; a sand-preventing packer, which comprises a letting-in part and a releasing part, wherein an oil tube is connected with a first end of the releasing part; a sand washing and prevention integrated sand-prevention pipe string, which is connected with the letting-in part, and interconnected with an oil sleeve casing; a sand washing and prevention integrated service part, which is arranged in the sand washing and prevention integrated sand-prevention pipe string and connected with a second end of the releasing part, wherein one end of the sand washing and prevention integrated service part is interconnected with the oil tube, and the other end is provided with a sealing ball seat. The control method comprises the following steps: a pipe string placing process, a ball seat sealing process, an extruding and filling process, a circular filling process, a replacing process, a flushing process, and a pipe string lifting process. Through the construction method, the seat sealing position of the sand-prevention packer and the sand sediment of an oil layer section can be washed, the completion pipe string is lowered in place, and construction time is shortened.

Description

One kind rushes sand prevention integrated completion tubular column and its control method
Technical field
The present invention relates to oil gas water well sand control technique field, especially one kind rush sand prevention integrated completion tubular column and its control Method.
Background technology
At present, domestic each main oilfield enters mid-later development phase, and it is increasing to take over reserves exploitation difficulty, for different oil The auxiliary products for hiding type propose various requirements, and some oil wells seriously cause repeated multiple times after sand washing removing because shaking out Tubing string all in the presence of phenomenon not in place, not only cause operating cost and account for the significantly prolongation in well cycle, and cause under part Well instrument is scrapped, and measure cost is greatly improved.
The content of the invention
In view of this, the present invention provides one kind and rushes sand prevention integrated completion tubular column, solves because of sand control caused by sand production Caused problem not in place under tubing string.
In order to achieve the above object, present invention generally provides following technical scheme:
Sand prevention integrated completion tubular column is rushed by one kind, including being arranged in sleeve pipe:Oil pipe, the oil pipe and sleeve pipe it Between space be oil jacket annular space;Sand control packer, including staying well part and give up part, wherein, the oil pipe is given up with described Partial first end connection;Rush sand prevention integrated sand control pipe, it is described to rush sand prevention integrated sand control pipe and stay well part with described Connection, it is described to rush sand prevention integrated sand control pipe and connect with the oil jacket annular space;Sand prevention integrated service is rushed, the punching is prevented Sand Integrated service part be arranged on it is described rush in sand prevention integrated sand control pipe, it is described to rush sand prevention integrated service and institute The second end connection of part of giving up is stated, it is described to rush sand prevention integrated service and connect with the oil pipe, rush sand control one described The free end of body service is provided with sealed ball seat.
Above-mentioned rushes in sand prevention integrated completion tubular column, described to rush sand prevention integrated sand control pipe including along a first direction Top connection, sealing drum, connecting cylinder and the filling cylinder being linked in sequence, in the top connection check-valves is provided with.
Above-mentioned rushes in sand prevention integrated completion tubular column, described to rush sand prevention integrated sand control pipe also including sand-proof pipe, institute State sand-proof pipe and be arranged on described staying between well part and the top connection.
Above-mentioned rushes in sand prevention integrated completion tubular column, and on the filling cylinder at least one pack hole is provided with.
Above-mentioned rushes in sand prevention integrated completion tubular column, described to rush sand prevention integrated service and seal with the sealing drum Contact.
Above-mentioned rushes in sand prevention integrated completion tubular column, described to rush sand prevention integrated service including along a first direction Washing pipe, washing pipe pipe nipple and the guide head being linked in sequence, the sealed ball seat is arranged on the guide head.
Above-mentioned rushes in sand prevention integrated completion tubular column, and the guide head via pins are connected with the washing pipe pipe nipple, described Pin is cut off at the first pressure, and described to stay well part to separate under second pressure with part of giving up, the first pressure is big In second pressure.
Above-mentioned rushes in sand prevention integrated completion tubular column, and the free end of the guide head is cone.
Above-mentioned rushes in sand prevention integrated completion tubular column, and high-pressure filling type rotary sliding well head dress is provided with the oil pipe Put.
The purpose of the present invention can also be achieved through the following technical solutions:
By a kind of control method for rushing sand prevention integrated completion tubular column, including following process,
Running string process:By the oil pipe, rush sand prevention integrated sand control pipe and rush sand prevention integrated service and divide It is not connected on sand control packer, the completion tubular column is transferred to into design attitude, while injects first by the oil jacket annular space Liquid, the first liquid is flowed out by the free end of the oil pipe;
Ball seat seal process:The input setting sand control packer of ball sealer, suppresses the sand control packer and gives up part, The sealed ball seat is opened;
Squeeze pack process:The second liquid for carrying back-up sand is pumped into into the oil pipe, the second liquid is carried and filled Back-up sand is clamp-oned in stratum, and back-up sand is constantly piled up in stratum, completes squeeze pack;
Flow pack process:Sleeve gate is opened, the second liquid returns out ground by sleeve pipe, and back-up sand is deposited on sleeve pipe Constantly pile up up to filling up with rushing in sand prevention integrated sand control pipe annular space, complete flow pack;
Displacement process:Threeth liquid approximate with flow line volume is pumped in sand prevention integrated service to described punching;
Flushing process:The 4th liquid is pumped into into oil jacket annular space, the 4th liquid enters the oil pipe;
Tubing string acts process:The oil pipe and described punching are gone out in sand prevention integrated service by sleeve pipe.
In the above-mentioned control method for rushing sand prevention integrated completion tubular column, the completion tubular column is being transferred to design attitude During, the such as setting position of the sand control packer has reservoir sand to deposit, then on put and put the completion tubular column, meanwhile, use The first liquid of injection is rinsed, it is ensured that the setting position of sand control packer deposits without reservoir sand in described sleeve pipe.
By above-mentioned technical proposal, a kind of completion tubular column proposed by the present invention and preparation method thereof at least has following excellent Point:
The present invention makes completion tubular column transfer in place by a construction method, shortens the engineering time, it is to avoid sand control packer The sand deposition of setting position and oil layer section.
The present invention can be solved because of caused series of problems not in place under sand control pipe caused by sand production.
The completion tubular column is by entering the oil pipe being connected on the sand control packer, rushing sand prevention integrated under one time Sand control pipe with rush sand prevention integrated service.When not only shortening the engineering time, and avoiding tubing string twice from rushing sand control construction After the completion of the sand washing of presence, because problem not in place under second time tubing string that sand is rapidly caused is told on stratum.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Description of the drawings
Fig. 1 is the structural representation of the embodiment that the present invention rushes sand prevention integrated completion tubular column;
Fig. 2 is the part-structure schematic diagram that the present invention rushes sand prevention integrated sand control pipe;
Fig. 3 is the part-structure schematic diagram that the present invention rushes sand prevention integrated service;
Fig. 4 is the structural representation of sand control packer of the present invention.
Specific embodiment
Further to illustrate the present invention to reach technological means and effect that predetermined goal of the invention is taken, below in conjunction with Accompanying drawing and preferred embodiment, to the specific embodiment according to a kind of completion tubular column proposed by the present invention and its method of work, knot Structure, feature and its effect, describe in detail as after.In the following description, what different " embodiment " or " embodiment " referred to differs Surely it is same embodiment.Additionally, the special characteristic, structure or feature in one or more embodiments can be by any suitable form group Close.
As shown in Figures 1 to 4, one embodiment of the invention discloses one kind and rushes sand prevention integrated completion tubular column, including setting Put in sleeve pipe 1:Oil pipe 2, the space between the oil pipe 2 and sleeve pipe 1 is oil jacket annular space;Sand control packer, including staying well Part 4 and part 3 of giving up, wherein, the oil pipe 2 is connected with the first end for giving up part 3;Rush sand prevention integrated sand-proof pipe Post 10, the sand prevention integrated sand control pipe 10 that rushes stays well part 4 to be connected with described, described to rush sand prevention integrated sand control pipe 10 Connect with the oil jacket annular space;Rush sand prevention integrated service 20, it is described to rush sand prevention integrated service 20 and be arranged on institute State and rush in sand prevention integrated sand control pipe 10, second end for rushing sand prevention integrated service 20 and the part 3 of giving up Connection, it is described rush sand prevention integrated service 20 and connect with the oil pipe 2, rush sand prevention integrated service 20 described Free end is provided with sealed ball seat 22.
The completion tubular column can be solved because of caused series of problems not in place under sand control pipe caused by sand production.Institute Completion tubular column is stated by entering the oil pipe 2 being connected on the sand control packer under one time, rushing sand prevention integrated sand control pipe 10 with rush sand prevention integrated service 20.Not only shorten the engineering time, and avoid tubing string twice from rushing when sand control is constructed and exist Sand washing after the completion of, because problem not in place under second time tubing string that sand is rapidly caused is told on stratum.
The completion tubular column is applicable not only to horizontal well, also apply be applicable to inclined shaft and straight well.
When being embodied as, it is described rush sand prevention integrated sand control pipe 10 include be linked in sequence along a first direction on connect Head, sealing drum 12, connecting cylinder 13 and filling cylinder 14.Check-valves 11 is provided with the top connection.It is described to rush sand prevention integrated anti- Sandpipe post 10 also includes sand-proof pipe, and the sand-proof pipe is arranged on described staying between well part 4 and the top connection.In the filling Cylinder 14 is provided with least one pack hole.It is described that to rush sand prevention integrated service 20 in sealing contact with the sealing drum 12.
It is described rush sand prevention integrated service 20 include be linked in sequence along a first direction washing pipe 21, washing pipe pipe nipple and Guide head 24, the sealed ball seat 22 is arranged on the guide head 24.
Below so that sleeve pipe 1 is vertically placed as an example, it is further described.
The sand control packer is arranged in described sleeve pipe 1, the sand-proof pipe be located at the packer lower end, it is described on connect Head is connected in the sand-proof pipe lower end, and the sealing drum 12 is connected in the top connection lower end, and the connecting cylinder 13 is arranged on institute The lower end of sealing drum 12 is stated, the filling cylinder 14 is connected in the lower end of the connecting cylinder 13.
The washing pipe pipe nipple is connected with sand control packer, and the guide head 24 is connected in the washing pipe pipe nipple lower end.
When being embodied as, the via pins 23 of the guide head 24 are connected with the washing pipe pipe nipple, and the pin 23 is in the first pressure It is cut off under power, described to stay well part 4 to separate under second pressure with part 3 of giving up, the first pressure is more than second pressure.
It is conical end that the top of the guide head 24 is the lower end of sealed ball seat 22, and the free end of the guide head 24 is circular cone Shape.So as to facilitate the guide head 24 to penetrate in the sand prevention integrated sand control pipe.
When being embodied as, in the upper end of the oil pipe 2 high-pressure filling type rotary sliding well head is provided with.The sand control packing Device gives up the lower end of part 3 for washing pipe pipe nipple, and high-pressure filling type rotary sliding well head makes with oil pipe 2, equal diameter washing pipe 21, guide head 24 Whole tubing string becomes closed filling passage, and sand control packer part 3 of giving up is connected in one with well part 4 is stayed by left hand thread Rise, it is the tubing round thread for connecting sand-proof pipe that sand control packer stays the lower end of well part 4.The sand-proof pipe is fixed on the sand control packing On device.The top connection is connected in the sand-proof pipe lower end, the unidirectional work at least opened downwards together inside the top connection Door, the check valve is closed in described punching after sand prevention integrated service 20 goes out, and constitutes sand block barrier.The sealing drum 12 are connected in the top connection lower end, there is at least one sealing ring inside the sealing drum 12, and with described sand prevention integrated clothes are rushed Business part 20 seals, and the connecting cylinder 13 is connected in the lower end of the sealing drum 12, and the filling cylinder 14 is connected in the connecting cylinder 13 lower ends, the lower end of filling cylinder 14 is provided with least one sand washing pack hole, constitutes sand washing and filling passage.The pin 23 is Level pressure copper pin 23, the level pressure copper pin 23 makes the washing pipe pipe nipple 21 connect as one with guide head 24, in setting pressure Lower level pressure pin 23 is cut off, and guide head 24 comes off, and opens filling passage.
The method of work of the completion tubular column comprises the steps:By the top connection, sealing drum 12, connecting cylinder 13, fill Fill out cylinder 14, sand-proof pipe, link together by design sequence.Composition rush sand prevention integrated sand control pipe 10, under enter sleeve pipe well head position Put;It is described to rush sand prevention integrated service 20, under enter to rush in sand prevention integrated sand control pipe 10 and give up with sand control packer The end of part second connects, and rushes sand prevention integrated tubing string and is connected with sand control packer, and last sand control packer is given up portion first end Link together composition completion tubular column by design sequence with oil pipe 2.The completion tubular column is in decentralization process, it is to be ensured that institute's sand control To design attitude under packer, halfway because the way that shakes out is hampered, (note can be washed down:Sand washing process is necessary for backwash);Connection High-pressure filling type rotary sliding well head.
Under the sand control pipe in place after, repeatedly on put and put completion tubular column, and backwash, it is ensured that, sand control packer seat Envelope position and oil layer section are deposited without reservoir sand.
Ball sealer is put into into the completion tubular column, the ball sealer is fallen in the sealed ball seat 22 of guide head 24, make from And it is closed the sand washing filling passage.Setting sand control packer is suppressed, makes sand control packer give up, then proceeded to Suppressing cuts off the level pressure copper pin 23 between washing pipe pipe nipple and guide head 24, and guide head 24 comes off, and beats sand washing filling passage Open.
Ground high pressure pump truck group pumps into high pressure load fluid into oil pipe 2, high pressure load fluid carry back-up sand flow through oil pipe 2, The interior filling passage for rushing sand prevention integrated service 20, the outer filling passage for rushing sand prevention integrated sand control part enter stratum, Carry out squeeze pack.After squeeze pack terminates, the gate of sleeve pipe 1 is opened, fluid section flows through oil pipe 2, punching and prevents in high pressure load fluid The interior filling passage of sand Integrated service part 20, the outer filling passage, sand-proof pipe and the washing pipe that rush sand prevention integrated sand control part The annular space of pipe nipple annular space, oil pipe 2 and sleeve pipe 1 returns out ground, high pressure load fluid cobble-stone part Jing sand-proof pipes to the gate of sleeve pipe 1 Filtration constantly pile up in sleeve pipe 1 and sand-proof pipe annular space, complete flow pack.After flow pack terminates, ground high pressure pump truck Group pumps into the displacement fluid approximate with the volume of oil pipe 2 of going into the well to sand prevention integrated service 20 is rushed.Above carry and rush sand prevention integrated clothes Business part 20, ground high pressure pump truck group to the annular space of oil pipe 2 and sleeve pipe 1 pumps into flushing fluid, flushing fluid Jing oil pipes 2 and sleeve pipe 1 Annular space, rush sand prevention integrated service 20 interior filling passage enter oil pipe 2, the gravel in oil pipe 2 is rinsed to ground, rise Go out and rush sand prevention integrated service 20.
When being embodied as, the upper end of oil pipe 2 of the completion tubular column is connected with high-pressure filling type rotary sliding well head;It is logical Cross to be put on the high-pressure filling type rotary sliding well head and put completion tubular column.The sand control packer includes that sand control pipe connects spiral shell Line and service connection screw thread.
The control method of described completion tubular column, including following process,
Running string process:By the oil pipe 2, rush sand prevention integrated sand control pipe 10 and rush sand prevention integrated service 20 are connected on sand control packer, and the completion tubular column is transferred to into design attitude, while being injected by the oil jacket annular space First liquid, the first liquid is flowed out by the free end of the oil pipe 2;
Ball seat seal process:Sand control packer described in the input envelope of sealed ball seat 22, suppresses the sand control packer and gives up portion Divide 3, the sealed ball seat 22 is opened;
Squeeze pack process:Second liquid is pumped into into the oil pipe 2, the second liquid is clamp-oned in stratum, back-up sand It is deposited in stratum and constantly piles up, completes squeeze pack;
Flow pack process:The gate of sleeve pipe 1 is opened, the second liquid returns out ground by sleeve pipe 1, and back-up sand is deposited on set Pipe 1 is constantly piled up up to filling up with rushing in the annular space of sand prevention integrated sand control pipe 10, completes flow pack;
Displacement process:Threeth liquid approximate with the volume of oil pipe 2 is pumped in sand prevention integrated service 20 to described punching;
Flushing process:The 4th liquid is pumped into into oil jacket annular space, the 4th liquid enters the oil pipe 2;
Tubing string acts process:By the oil pipe 2 and described rush in sand prevention integrated service 20 to go out by sleeve pipe 1.
When being embodied as, during the decentralization completion tubular column to design attitude, the such as sand control packer is setting Position has reservoir sand to deposit, then on put and put the completion tubular column, meanwhile, be rinsed using the first liquid of injection, it is ensured that The setting position of sand control packer deposits without reservoir sand in described sleeve pipe 1.
When being embodied as, the method that one-trip string of the invention rushes sand prevention integrated completion practice is comprised the following steps:
A driftings:Under enter to rush before sand prevention integrated device for filling using drift size gauge tool drifting to artificial bottom of a well, and clean dry Only.
B. pipe cleaning and clean up.
C. enter down and rush sand prevention integrated sand control pipe 10, be followed successively by from bottom to top:
(1) sand control pack device+sand-proof pipe is rushed, then by above-mentioned tubing string seat in well head.
(2) server tubing string is entered under:Filling server+equal diameter washing pipe 21.
(3) connection and under enter to rush sand control packer:Explanation:Rush sand control packer lower end washing pipe pipe nipple to connect with equal diameter washing pipe 21 Connect;Rush sand control packer lower end screen casing junction button to be connected with sand-proof pipe.
D, above tubing string is transferred to into design attitude with oil pipe 2, if midway is hampered because shaking out, can be washed down.
E, connection high-pressure filling type rotary sliding well head.
F, rush under sand prevention integrated device for filling sand control pipe in place after, repeatedly on put and put tubing string, and backwash, it is ensured that Packer set position deposits without reservoir sand.
G, ball sealer is setting rushes sand control packer for input.
H, suppress and rush sand control packer and give up.
I, suppress open fill passage.
J, sand control construction:Ground high pressure pump truck group pumps into high pressure load fluid into oil pipe 2, and high pressure load fluid carries back-up sand Oil pipe 2 is flowed through, the interior filling passage of sand prevention integrated service 20 is rushed, is rushed the outer filling passage of sand prevention integrated sand control part Into stratum, squeeze pack is carried out.After squeeze pack terminates, the gate of sleeve pipe 1 is opened, fluid section flows through oil in high pressure load fluid Pipe 2, the interior filling passage for rushing sand prevention integrated service 20, outer filling passage, the sand control for rushing sand prevention integrated sand control part The annular space of pipe and washing pipe pipe nipple annular space, oil pipe 2 and sleeve pipe 1 returns out ground to the gate of sleeve pipe 1, and proppant exists in high pressure load fluid Constantly pile up up to filling up in sleeve pipe 1 and sand-proof pipe annular space, complete flow pack, after flow pack terminates, ground high pressure pump truck Group pumps into the displacement fluid approximate with the volume of oil pipe 2 of going into the well to sand prevention integrated service tube-column is rushed.
The sand prevention integrated service tube-column of k, Shang Tichong, ground high pressure pump truck group to the annular space of oil pipe 2 and sleeve pipe 1 pumps into well-flushing Liquid, the oil jacket annular space of flushing fluid Jing oil pipes 2 and sleeve pipe 1, rushes the interior filling passage of sand prevention integrated service 20, rushes sand control one Body service 20 enters oil pipe 2, and the load fluid in oil pipe 2 is rinsed well.
L, rise to rush sand prevention integrated service tube-column.
Using above-mentioned tubing string and method, thoroughly solve because not in place caused one is under sand control pipe caused by sand production Row problem.One-trip string rushes sand prevention integrated completion technique and realizes one-trip string sand washing and filling completion construction, when shortening construction Between, construct simple and convenient, twice tubing string is rushed after the completion of the sand washing existed when sand control is constructed, because sand is told on stratum before can avoiding Problem not in place under the second time tubing string for rapidly causing.
The above, is only presently preferred embodiments of the present invention, and any pro forma restriction is not made to the present invention, according to According to any simple modification, equivalent variations and modification that the technical spirit of the present invention is made to above example, this is still fallen within In the range of bright technical scheme.

Claims (6)

1. one kind rushes sand prevention integrated completion tubular column, it is characterised in that:Including being arranged in sleeve pipe:
Oil pipe, the space between the oil pipe and sleeve pipe is oil jacket annular space;
Sand control packer, including staying well part and give up part, wherein, the oil pipe connects with the first end of the part of giving up Connect;
Rush sand prevention integrated sand control pipe, described to rush sand prevention integrated sand control pipe and stay well part to be connected with described, the punching is anti- Sand integration sand control pipe is connected with the oil jacket annular space;
Rush sand prevention integrated service, it is described rush sand prevention integrated service and be arranged on described rush sand prevention integrated sand-proof pipe It is described to rush sand prevention integrated service and be connected with the second end of the part of giving up in post, it is described to rush sand prevention integrated service Part connects with the oil pipe, and in the free end for rushing sand prevention integrated service sealed ball seat is provided with;
It is described rush sand prevention integrated sand control pipe include be linked in sequence along a first direction top connection, sealing drum, connecting cylinder and Filling cylinder, in the top connection check-valves is provided with;
It is described to rush washing pipe, washing pipe pipe nipple and guide head that sand prevention integrated service includes being linked in sequence along a first direction, The sealed ball seat is arranged on the guide head;
The guide head via pins are connected with the washing pipe pipe nipple, and the pin is cut off at the first pressure, described to stay well portion Divide and give up and partly separate under second pressure, the first pressure is more than second pressure;
High-pressure filling type rotary sliding well head is provided with the oil pipe.
It is 2. according to claim 1 to rush sand prevention integrated completion tubular column, it is characterised in that
It is described to rush sand prevention integrated sand control pipe and also include sand-proof pipe, the sand-proof pipe be arranged on it is described stay well part and it is described on Between joint.
It is 3. according to claim 1 to rush sand prevention integrated completion tubular column, it is characterised in that
At least one pack hole is provided with the filling cylinder.
It is 4. according to claim 1 to rush sand prevention integrated completion tubular column, it is characterised in that
It is described that to rush sand prevention integrated service in sealing contact with the sealing drum.
5. a kind of control method for rushing sand prevention integrated completion tubular column as any one of Claims 1-4, its feature exists In including following process,
Running string process:By oil pipe, rush sand prevention integrated sand control pipe and be connected to sand prevention integrated service is rushed On sand control packer, completion tubular column is transferred to into design attitude, while injecting first liquid by oil jacket annular space, first liquid is by oil Flow out the free end of pipe;
Ball seat seal process:The input setting sand control packer of ball sealer, suppresses sand control packer and gives up part, and sealed ball seat is beaten Open;
Squeeze pack process:The second liquid for carrying back-up sand is pumped into into oil pipe, second liquid carries back-up sand and clamp-ons stratum Interior, back-up sand is constantly piled up in stratum, completes squeeze pack;
Flow pack process:Sleeve gate is opened, second liquid returns out ground by sleeve pipe, and back-up sand is deposited on sleeve pipe and rushes sand control Constantly pile up up to filling up in integrated sand control pipe annular space, complete flow pack;
Displacement process:Threeth liquid approximate with flow line volume is pumped in sand prevention integrated service to rushing;
Flushing process:The 4th liquid is pumped into into oil jacket annular space, the 4th liquid enters oil pipe;
Tubing string acts process:By oil pipe and rush sand prevention integrated service and go out by sleeve pipe.
6. the control method for rushing sand prevention integrated completion tubular column according to claim 5, it is characterised in that
During the decentralization completion tubular column to design attitude, such as the setting position of the sand control packer has reservoir sand to sink Product, then on put and put the completion tubular column, meanwhile, be rinsed using the first liquid of injection, it is ensured that sand control in described sleeve pipe Packer set position deposits without reservoir sand.
CN201510114526.7A 2015-03-16 2015-03-16 Sand washing and prevention integrated completion pipe string and control method thereof Active CN104695915B (en)

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