CN212563173U - Completion jet flow blockage removal process pipe column for open hole screen pipe of thickened oil block horizontal well - Google Patents
Completion jet flow blockage removal process pipe column for open hole screen pipe of thickened oil block horizontal well Download PDFInfo
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Abstract
The utility model discloses a viscous crude block horizontal well bore hole screen pipe well completion efflux unblocking technology tubular column, include: the sand discharge inner pipe is arranged inside the jet flow outer pipe; and the inner diameter of the jet outer pipe is larger than the outer diameter of the sand discharge inner pipe. And an inner pipe and outer pipe sealing device is arranged between the outer wall of the sand discharge inner pipe and the inner wall of the lower end of the jet flow outer pipe. And a fluid reversing device is arranged at the upper end of the jet outer pipe. The upper end of the fluid reversing device is connected with the lower end of the construction oil pipe. An inner pipe suspension device is installed at the upper port of the sand discharge inner pipe, and the inner pipe suspension device is located at a position closer to the direction of a wellhead than the position of the fluid reversing device. The utility model can perform jet flow blockage removal on fine sand and oil sludge near the open hole sieve tube, remove blockage, release potential of an oil well, and achieve the purpose of normal production of the oil well; and secondly, the oil-well back-flow can be quickly carried out, so that engineering accidents caused by the fact that oil sludge and sand block the process pipe column are avoided, and particularly in an oil well which has serious stratum void and leakage of working fluid in the jet flow blockage removing process.
Description
Technical Field
The utility model belongs to the technical field of the oil field viscous crude block development technique and specifically relates to viscous crude block horizontal well bore hole screen pipe well completion efflux unblocking technology tubular column.
Background
In the development process of the heavy oil zone of the oil field, the open hole screen pipe well completion horizontal well is a relatively mature well completion development mode, is applied in a large scale and has important significance for solving the heavy oil reservoir development. With the prolonging of production time, the fine sand and oil sludge in the near wellbore region are gradually transported to the vicinity of the open hole sieve tube along with the crude oil, part of the fine sand and oil sludge are transported to the ground along with the crude oil, and part of the fine sand and oil sludge is adhered to the vicinity of the open hole sieve tube, so that the seepage capability of the open hole sieve tube is reduced, the yield of the horizontal well is gradually reduced, and finally, no production capacity exists. In order to improve the productivity of the oil well, the oil well can normally produce only by thoroughly removing the blockage near the open hole sieve tube, so that the open hole sieve tube of the horizontal well needs to be cleaned and unblocked, and the potential energy of the stratum released by fine sand and oil sludge adhered near the open hole sieve tube is removed, thereby achieving the purpose of normally producing the oil well.
Public (announcement) No. CN209539335U, public (announcement) day 2019.10.25 discloses a horizontal well intraductal water conservancy sprays unblock instrument, including the pipeline case, the inside of pipeline case is equipped with the partition board, the upper surface of partition board and the bottom surface of partition board respectively with the interior roof of pipeline case and the interior diapire fixed connection of pipeline case, the left surface of partition board is fixed to be inlayed and is had the go-between, first through-hole has been seted up to the right flank of pipeline case, the left side of pipeline case is equipped with the pipeline, the left end of pipeline run through first through-hole and with the inner wall fixed connection of go-between, the equal fixedly connected with pressure case of the interior roof of pipeline case and the interior diapire of pipeline case, two the second through-hole has all been seted up to the side that the pressure case is close to each other, two the third through-hole has all been seted up to the side that the. The utility model relates to a rational in infrastructure, it can protect the pipeline to prevent that the pipeline from taking place the distortion, has prolonged the life-span that the pipeline used and can be when the stifled operation of unblocking, has avoided the dirt to cause the damage to inside part.
Publication (announcement) number-CN 206309349U, publication (announcement) date 2017.07.07 discloses a hydraulic jet blockage removal tool in a horizontal well pipe, belonging to the field of downhole operation in oil and gas field development. The hydraulic jet blockage removing tool comprises a hollow water jet tool body, wherein a plurality of Helmholtz nozzles which are communicated with the water jet tool body and jet oblique jet flows and vertical jet flow nozzles which jet vertical jet flows are arranged on the water jet tool body, and the Helmholtz nozzles and the vertical jet flow nozzles are arranged in a spiral lift angle mode. The utility model discloses an adopt helmholtz nozzle and perpendicular jet nozzle to replace force couple nozzle and oblique nozzle to make helmholtz nozzle and perpendicular jet nozzle be certain spiral lead angle permutation and combination on water jet instrument body, can produce spiral and perpendicular fluidic compound washing and remove stifled effect to the screen pipe inner wall, thereby realize effectively removing stifled to the multilayer filter layer passageway of accurate compound screen pipe.
Publication (bulletin) number-CN 208534434U, publication (bulletin) No. 2019.02.22 discloses a uniform jet flow blockage removal and filling integrated process pipe column, wherein the pipe column comprises an outer pipe column and an inner pipe column which are filled with uniform jet flow blockage removal. The outer pipe column comprises an oil pipe, a double-wall outer pipe of the liquid flow double-wall conversion tool, a differential choke packer and a jet flow blockage removing tool which are sequentially connected from top to bottom. The inner pipe column comprises a double-wall inner pipe of the liquid flow double-wall conversion tool, an inner filling pipe and an acid washing and filling inner tool. The uniform jet flow plug removal filling outer pipe column and the inner pipe column are connected through a liquid flow double-wall conversion tool and are put into a well, an annular space can be formed between the inner pipe column and the outer pipe column, and a liquid flow channel is provided for pickling and extrusion circulating filling. The process pipe column can realize that screen pipe jet flow, near well uniform acid washing blockage removal and extrusion, and circulating filling sand prevention construction of a long well section of a horizontal well can be completed by one time of pipe column.
Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, perhaps technical field or application scenario are different, are directed to the utility model discloses more technical problem and the beneficial effect that will solve, above open technical document all do not have the technological inspiration.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a thick oil block horizontal well open hole sieve tube well completion jet flow blocking removal process pipe column aiming at the defects in the prior art, which can perform jet flow blocking removal on fine sand and oil sludge near the open hole sieve tube, remove blocking, release potential of an oil well and achieve the purpose of normal production of the oil well; and secondly, the oil-well back-flow can be quickly carried out, so that engineering accidents caused by the fact that oil sludge and sand block the process pipe column are avoided, and particularly in an oil well which has serious stratum void and leakage of working fluid in the jet flow blockage removing process.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the jet flow blockage removal process pipe column for open hole screen pipe well completion of the thickened oil zone horizontal well comprises:
the sand discharge inner pipe is arranged inside the jet flow outer pipe;
and the inner diameter of the jet outer pipe is larger than the outer diameter of the sand discharge inner pipe.
Furthermore, an inner pipe and outer pipe sealing device is arranged between the outer wall of the sand discharge inner pipe and the inner wall of the lower end of the jet flow outer pipe.
Further, a fluid reversing device is installed at the upper end of the jet outer pipe.
Furthermore, the upper end of the fluid reversing device is connected with the lower end of the construction oil pipe.
Furthermore, an inner pipe suspension device is installed at an upper port of the sand discharge inner pipe, and the inner pipe suspension device is located at a position closer to the wellhead direction than the fluid reversing device.
Furthermore, the jet outer pipe is provided with a radially through jet hole, an annular space is formed between the inner wall of the jet outer pipe and the outer wall of the sand discharge inner pipe, the inner pipe suspension device plugs an upper axial port of the annular space, and the inner pipe sealing device and the outer pipe sealing device plug a lower axial port of the annular space.
Furthermore, a bell mouth is arranged after the lower port of the sand discharge inner pipe extends out of the jet flow outer pipe, and the maximum outer diameter of the lower bell mouth is smaller than the inner diameter of the sleeve.
Compared with the prior art, the utility model following beneficial effect has:
by implementing the process pipe column, the problems of fine silt and oil sludge near the open hole sieve tube are solved, the blockage is removed, the potential energy of the oil well is released, and the aim of normal production of the oil well is fulfilled; and the flow can be quickly discharged back, so that engineering accidents caused by the fact that the oil sludge sand blocks the process pipe column are avoided. The effect is very obvious through field use.
Drawings
Fig. 1 is the structure schematic diagram of the jet flow blockage relieving process pipe column for the open hole screen pipe well completion of the thickened oil block horizontal well.
In the figure: the device comprises a bell mouth 1, a D42 sand discharge inner pipe 2, an inner pipe suspension device 3, an inner and outer pipe sealing device 4, a D76 jet flow outer pipe 5, a fluid reversing device 6 and a D76 construction oil pipe 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
referring to fig. 1, the present invention provides a technical solution:
the jet flow blockage removal process pipe column for open hole screen pipe well completion of the thickened oil zone horizontal well comprises:
the sand discharge inner pipe 2 is arranged inside the jet flow outer pipe;
and the inner diameter of the jet outer pipe is larger than the outer diameter of the sand discharge inner pipe.
Further, an inner pipe and outer pipe sealing device 4 is arranged between the outer wall of the sand discharge inner pipe and the inner wall of the lower end of the jet flow outer pipe.
Further, a fluid reversing device 6 is installed at the upper end of the jet flow outer pipe, and the outer portion of the fluid reversing device is sealed with the inner wall of the sleeve.
Further, the upper end of the fluid reversing device is connected with the lower end of a construction oil pipe 7.
Further, an inner pipe hanging device 3 is installed at the upper port of the sand discharge inner pipe, and the inner pipe hanging device is located at a position closer to the wellhead direction than the fluid reversing device. The upper and lower relation stated in this application means, according to the direction of the horizontal well, it is upper to face the well head, it is lower to face the shaft bottom.
Furthermore, the jet outer pipe is provided with a radially through jet hole, an annular space is formed between the inner wall of the jet outer pipe and the outer wall of the sand discharge inner pipe, the inner pipe suspension device plugs an upper axial port of the annular space, and the inner pipe sealing device and the outer pipe sealing device plug a lower axial port of the annular space.
Furthermore, a bell mouth 1 is arranged after a lower port of the sand discharge inner pipe extends out of the jet flow outer pipe, and the maximum outer diameter of the lower bell mouth is smaller than the inner diameter of the sleeve.
The bell mouth is located the bottom of technology tubular column, and the overall shape is the back taper, and the bell mouth points to the shaft bottom direction, and the main function is that the smooth interior pipe that gets into D42 sand discharge of the fine sand of powder and fatlute of being convenient for wash.
D42 sand discharge inner tube is located the intracavity of D76 efflux outer tube, because the internal diameter is less, can improve the flowing back speed, and the primary function makes abluent fine sand of powder, fatlute and flush fluid flow back row fast, avoids sand card tubular column. D42 Sand discharge inner pipe refers to a pipe column with an inner diameter of 42 cm. The D76 jet outer pipe is a pipe column with the inner diameter of 76 cm and is uniformly provided with a plurality of jet holes.
The inner pipe hanging device is located at the top of the D42 sand discharge inner pipe and hung on the inner wall of the lower end of a construction pipe column, the position of the fluid reversing device is mainly opened, liquid in the sleeve pipe flows into the jet flow outer pipe through the fluid reversing device, and the inner pipe hanging device is mainly used for hanging the sand discharge inner pipe and sealing the inner pipe column and the outer pipe column. The inner pipe suspension device is the prior art in the field and can be directly applied.
The inner and outer pipe sealing devices are positioned at the bottom of the D76 jet flow outer pipe and outside the D42 sand discharge inner pipe, and mainly used for sealing the inner and outer pipe columns. The inner and outer pipe sealing device is the prior art in the field and can be directly applied.
The D76 jet outer pipe is mainly formed by uniformly punching an N80 oil pipe according to design requirements, and has the function of enabling the jet plugging removing liquid to be reversed under certain pressure and directly shoot to an open hole sieve pipe, and cleaning fine sand and oil sludge near the open hole sieve pipe.
The fluid reversing device is positioned at the upper part of the jet outer pipe, and is mainly used for sealing the oil sleeve annulus and reversing jet plugging removal liquid from the sleeve so that the liquid is reversed from the sleeve to a position between the D76 jet outer pipe and the D42 sand discharge inner pipe for injection plugging removal. The fluid reversing device is the prior art in the field and can be directly applied.
The D76 construction oil pipe is positioned at the upper part of the D76 jet flow outer pipe and is used for dredging the whole process pipe column to a preset place for construction.
And after the process pipe column is lowered to a preset position, pumping jet flow blockage removing liquid from the annular space of the oil sleeve to spray the open hole sieve pipe, observing the removal condition of fine sand and oil sludge at the outlet of the oil pipe, and finishing the jet flow blockage removing process when the colors of the jet flow blockage removing liquid at the inlet and the outlet are consistent.
Example 2:
referring to fig. 1, the present invention provides a technical solution:
the jet flow blockage removal process pipe column for open hole screen pipe well completion of the thickened oil zone horizontal well comprises:
the sand discharge inner pipe 2 is arranged inside the jet flow outer pipe;
and the inner diameter of the jet outer pipe is larger than the outer diameter of the sand discharge inner pipe.
Further, an inner pipe and outer pipe sealing device 4 is arranged between the outer wall of the sand discharge inner pipe and the inner wall of the lower end of the jet flow outer pipe.
Further, a fluid reversing device 6 is installed at the upper end of the jet flow outer pipe, and the outer portion of the fluid reversing device is sealed with the inner wall of the sleeve.
Further, the upper end of the fluid reversing device is connected with the lower end of a construction oil pipe 7.
Further, an inner pipe hanging device 3 is installed at the upper port of the sand discharge inner pipe, and the inner pipe hanging device is located at a position closer to the wellhead direction than the fluid reversing device. The upper and lower relation stated in this application means, according to the direction of the horizontal well, it is upper to face the well head, it is lower to face the shaft bottom.
Furthermore, the jet outer pipe is provided with a radially through jet hole, an annular space is formed between the inner wall of the jet outer pipe and the outer wall of the sand discharge inner pipe, the inner pipe suspension device plugs an upper axial port of the annular space, and the inner pipe sealing device and the outer pipe sealing device plug a lower axial port of the annular space.
Although fig. 1 is used for all the above embodiments, it is obvious to those skilled in the art that a separate drawing is not shown as long as the parts or structural features missing in the embodiments are removed from the drawing. As will be clear to the skilled person. Of course, the embodiments with more components are only the preferred embodiments, and the embodiments with fewer components are the basic embodiments, but the basic utility model objects can also be achieved, so all these are within the protection scope of the present invention.
All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.
In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. Viscous crude block horizontal well open hole screen pipe well completion efflux unblocking technology tubular column, its characterized in that includes:
the sand discharge inner pipe is arranged inside the jet flow outer pipe;
the inner diameter of the jet outer pipe is larger than the outer diameter of the sand discharge inner pipe;
an inner pipe and outer pipe sealing device is arranged between the outer wall of the sand discharge inner pipe and the inner wall of the lower end of the jet flow outer pipe;
and a fluid reversing device is arranged at the upper end of the jet outer pipe.
2. The thick oil zone horizontal well open-hole screen pipe completion jet flow blockage relieving process pipe string according to claim 1, wherein the upper end of the fluid reversing device is connected with the lower end of a construction oil pipe.
3. The thick oil zone horizontal well open-hole screen pipe completion jet flow blockage relieving process pipe column according to claim 2, wherein an inner pipe suspension device is installed at the upper port of the sand discharge inner pipe, and the inner pipe suspension device is located at a position closer to the wellhead direction than the fluid reversing device.
4. The thick oil zone horizontal well open hole screen pipe well completion jet flow deblocking process pipe column according to claim 3, characterized in that the jet flow outer pipe is provided with jet flow holes which are radially communicated, an annular space is formed between the inner wall of the jet flow outer pipe and the outer wall of the sand discharge inner pipe, the inner pipe suspension device blocks an upper axial port of the annular space, and the inner and outer pipe sealing devices block a lower axial port of the annular space.
5. The thick oil zone horizontal well open-hole screen pipe completion jet flow blockage relieving process pipe column according to claim 4, wherein a bell mouth is arranged after a lower port of the sand discharge inner pipe extends out of the jet flow outer pipe, and the maximum outer diameter of the lower bell mouth is smaller than the inner diameter of the sleeve.
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| CN202020786711.7U CN212563173U (en) | 2020-05-13 | 2020-05-13 | Completion jet flow blockage removal process pipe column for open hole screen pipe of thickened oil block horizontal well |
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| CN202020786711.7U CN212563173U (en) | 2020-05-13 | 2020-05-13 | Completion jet flow blockage removal process pipe column for open hole screen pipe of thickened oil block horizontal well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198066A (en) * | 2021-12-16 | 2022-03-18 | 中国地质科学院勘探技术研究所 | Sea natural gas hydrate desanding exploitation device and desanding exploitation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198066A (en) * | 2021-12-16 | 2022-03-18 | 中国地质科学院勘探技术研究所 | Sea natural gas hydrate desanding exploitation device and desanding exploitation method thereof |
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