CN216110681U - Optical fiber logging device for horizontal well layered completion - Google Patents
Optical fiber logging device for horizontal well layered completion Download PDFInfo
- Publication number
- CN216110681U CN216110681U CN202122543054.0U CN202122543054U CN216110681U CN 216110681 U CN216110681 U CN 216110681U CN 202122543054 U CN202122543054 U CN 202122543054U CN 216110681 U CN216110681 U CN 216110681U
- Authority
- CN
- China
- Prior art keywords
- oil pipe
- pipe
- optical cable
- logging device
- cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Light Guides In General And Applications Therefor (AREA)
Abstract
The utility model discloses an optical fiber logging device for horizontal well layered completion, which comprises a safety valve, a first oil pipe, an optical cable branching support cylinder, a perforating pipe, a second oil pipe, a seating assembly, an electric submersible pump and a penetrable packer which are sequentially connected from top to bottom; the optical fiber logging device further comprises an optical cable and a downhole tool assembly connected to the lower end of the optical cable, the downhole tool assembly is fixed in the seating assembly, the lower portion of the optical cable is accommodated in the perforated pipe and the second oil pipe, and the upper portion of the optical cable penetrates out of the branched end of the optical cable branched supporting cylinder and upwards penetrates through the penetrating packer along the pipe wall of the first oil pipe until upwards penetrates out of a wellhead to be connected with monitoring equipment on the ground. The utility model can stably monitor the horizontal well layered completion for a long time by combining the stable well completion pipe string structure with the optical fiber.
Description
Technical Field
The utility model relates to the technical field of petroleum logging, in particular to a logging device for logging by utilizing a distributed optical fiber monitoring technology in horizontal layer layered well completion.
Background
The oil well is divided into a vertical well, an inclined well and a horizontal well, and the oil layer and the well section of the horizontal well are long, so that the oil extraction efficiency is high.
Energy reserve in China starts late, the foundation is poor, and the difference between the energy reserve in China and developed countries such as the West in the aspects of construction and research of oil and gas fields is large. The method is combined with the low permeability characteristic of the oil reservoir in China, the exploitation technology which accords with the reservoir characteristic in China is developed, theories, numerical calculation and field measured data are comprehensively applied, the exploitation of the low permeability oil and gas field is reinforced, the field measured data which can be stable for a long time is required to support the guidance of oil reservoir exploitation, and the existing technology does not have good well logging devices for long-term stable monitoring aiming at horizontal well layered well completion and special sealed wells.
Therefore, the prior art has yet to be improved.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide an optical fiber logging device for horizontal well layered completion, which can stably monitor a special well condition such as horizontal well layered completion for a long time by combining a stable completion pipe string structure with an optical fiber.
In order to realize the purpose, the utility model adopts the following technical scheme:
in a first aspect, the utility model provides an optical fiber logging device for horizontal well layered completion, wherein the optical fiber logging device comprises a safety valve, a first oil pipe, an optical cable branching support cylinder, a perforated pipe, a second oil pipe and a seating assembly which are sequentially connected from top to bottom, an electric submersible pump arranged on the first oil pipe, and a penetrable packer arranged between the safety valve and the electric submersible pump and sleeved outside the pipe wall of the first oil pipe;
the optical cable branching support cylinder comprises a first end connected with the first oil pipe, a second end connected with the perforated pipe, and a branching end which is positioned between the first end and the second end and provided with an opening;
the optical fiber logging device further comprises an optical cable and a downhole tool assembly connected to the lower end of the optical cable, the downhole tool assembly is fixed in the seating assembly, the lower portion of the optical cable is accommodated in the perforated pipe and the second oil pipe, and the upper portion of the optical cable penetrates out of the branched end of the optical cable branched supporting cylinder and upwards penetrates through the penetrating packer along the pipe wall of the first oil pipe until upwards penetrates out of a wellhead to be connected with monitoring equipment on the ground.
The first end, the second end and the forked end of the optical cable forked support cylinder form a three-way structure, and the forked end is provided with a sealing structure to seal the penetrating position of the optical cable.
The underground tool assembly comprises an optical fiber loop sealer, an online temperature and pressure meter combination and a fixed anchor which are sequentially connected.
The landing assembly comprises a plurality of oil pipe short sections, a landing short section arranged between the two oil pipe short sections and a round plug;
the plurality of oil pipe short sections comprise a first oil pipe short section and a tail oil pipe short section, the first oil pipe short section is connected with the second oil pipe, the tail oil pipe short section is connected with the circular plug, and the fixing anchor is clamped in the setting short section.
And a plurality of layered completion packers are sleeved outside the pipe wall of the second oil pipe below the optical cable furcation support cylinder at intervals.
The perforating pipe is a coupling-free perforating pipe, and the second oil pipe is a coupling-free oil pipe.
The upper part of the optical cable is fixed outside the pipe wall of the first oil pipe through an optical cable coupling protector.
It is understood that within the scope of the present invention, the above-mentioned technical features of the present invention and those specifically described below (in the embodiments) can be combined with each other to constitute a new or preferred technical solution, to be limited to space, and not to be described in any more detail herein.
The optical fiber logging device for horizontal well layered completion comprises a well completion pipe string which is stable in structure and is composed of a safety valve, a first oil pipe, an optical cable branching support cylinder, a perforating pipe, a second oil pipe and a seating assembly, an electric submersible pump and a penetrable packer which are sequentially connected, and an optical cable is arranged on the well completion pipe string. The lower part of the optical cable is accommodated in the perforated pipe and the second oil pipe, and the upper part of the optical cable penetrates out of the branched end of the optical cable branched supporting cylinder and upwards penetrates through the packer along the pipe wall of the first oil pipe until upwards penetrating out of the wellhead to be connected with the monitoring equipment on the ground. The optical fiber logging device of the utility model adopts the optical fiber bifurcated supporting cylinder to divide the optical fiber into an upper part and a lower part inside and outside the pipe, so that the lower part can reach the target depth in the well to detect the parameters in the well, and the upper part can avoid the influence of the electric submersible pump during oil pumping, therefore, the optical fiber logging device of the utility model can stably monitor the special well conditions of horizontal well layered completion for a long time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of a first embodiment of an optical fiber logging device for horizontal well zonal completion according to the present invention;
FIG. 2 is a schematic structural view of a cable furcation cartridge of the present invention;
FIG. 3 is a schematic view of the seating assembly of the present invention and a downhole tool assembly therein;
FIG. 4 is a schematic diagram of the front face configuration of the cable collar protector of the present invention;
FIG. 5 is a schematic top view of a cable collar protector according to the present invention.
Description of reference numerals:
100-logging device, 1-safety valve, 2-first tubing, 3-cable furcation cartridge, 31-first end, 32-second end, 33-furcation end, 4-perforated tubing, 5-second tubing, 6-landing assembly, 61-tubing nipple, 611-first tubing short, 612-last tubing nipple, 62-landing nipple, 63-round plug, 7-electric submersible pump, 8-traversable packer, 9-optical cable, 10-downhole tool assembly, 101-optical fiber loop sealer, 102-online thermomanometer combination, 103-anchor, 11-layered completion packer, 12-cable collar protector, 121-screw, 122-tubing hole, 123-cable hole, 200-wellhead, 300-sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
As shown in fig. 1, an optical fiber logging device 100 for horizontal well layered completion is provided in an embodiment of the present invention, where the optical fiber logging device 100 includes a safety valve 1, a first oil pipe 2, an optical cable branching support cylinder 3, a perforated pipe 4, a second oil pipe 5, and a seating assembly 6, which are connected in sequence from top to bottom, an electrical submersible pump 7 installed on the first oil pipe 2, and a traversable packer 8 located between the safety valve 1 and the electrical submersible pump 7 and sleeved outside a pipe wall of the first oil pipe 2.
The safety valve 1, the first oil pipe 2, the electric submersible pump 7, the crossing packer 8, the optical cable branching support cylinder 3, the perforating pipe 4, the second oil pipe 5 and the seating assembly 6 form a well completion pipe string. The completion string is installed in a well having casing 300 at its upper end, at the wellhead 200.
Preferably, the electric submersible pump 7 provided by the embodiment of the utility model is provided with two electric submersible pump pipe strings to improve the oil pumping efficiency.
Preferably, the perforated pipe 4 of the present invention is a non-collar perforated pipe, and the second tubing 5 is a non-collar tubing. The outer diameter of the pipe can be reduced by the coupling-free perforating pipe and the coupling-free oil pipe, so that the pipe string can be conveniently placed and penetrated.
As shown in FIG. 2, the furcation sleeve 3 of the logging device 100 of the present invention includes a first end 31 connected to the first tubing 2, a second end 32 connected to the perforated tubing 4, and a furcation end 33 disposed between the first end 31 and the second end 32 and having an opening.
The optical fiber logging device 100 further comprises an optical cable 9 and a downhole tool assembly 10 connected to the lower end of the optical cable 9, the downhole tool assembly 10 is fixed in the seating assembly 6, the lower part of the optical cable 9 is accommodated in the perforated pipe 4 and the second oil pipe 5, and the upper part of the optical cable 9 penetrates out of the forked end 33 of the optical cable forked support cylinder 3 and penetrates through the penetrable packer 8 upwards along the outside of the pipe wall of the first oil pipe 2 until penetrating out of the wellhead 200 to be connected with the monitoring equipment on the ground.
Thus, the optical fiber logging device 100 of the present invention can measure and monitor parameters such as temperature and pressure in an oil well by using a distributed optical fiber sensing monitoring technology with a monitoring device on the ground that feeds back signals from the optical fiber in the optical fiber cable 9.
The optical cable bifurcation support cylinder 3 of the utility model is connected with the first oil pipe 2 and the perforated pipe 4 on one hand, and more importantly, the optical cable 9 is divided into an upper part and a lower part, the lower part is accommodated in the pipe string, so that the lower part can reach the target depth in the well to detect the parameters in the well, and the upper part is arranged outside the pipe string, thus avoiding the influence on the optical cable 9 when the electric submersible pump 7 pumps oil, thereby ensuring the reliability of optical fiber monitoring, and simultaneously, because the optical cable 9 of the logging device 100 of the utility model is arranged along with the well completion pipe string, the logging device 100 can be made into a permanent logging device 100, thereby leading the optical fiber logging device 100 of the utility model to be capable of carrying out long-term and stable monitoring on special well conditions such as layered well completion of a horizontal well.
Meanwhile, the logging device 100 is formed by combining the well completion pipe string and the optical cable 9, and can replace the later production logging and part of engineering logging, thereby improving the safety guarantee and saving the logging cost.
Preferably, the optical cable 9 of the present invention employs an armored cable to secure the strength of the optical cable 9 and protect the optical fibers in the optical cable.
Further, as shown in fig. 2, the first end 31, the second end 32, and the bifurcated end 33 of the optical cable furcation cartridge 3 of the present invention constitute a three-way structure, and the bifurcated end 33 is provided with a sealing structure to seal the exit position of the optical cable 3. The optical cable branching supporting cylinder 3 is designed into a three-way structure so as to be convenient for connecting the first oil pipe 2 with the perforated pipe 4 and penetrating out of the optical cable 9, and meanwhile, the branching end 33 is provided with a sealing structure which can be a sealing ring and the like arranged at the opening of the branching end 33 in consideration of the internal sealing performance of the pipe string.
Preferably, as shown in fig. 1, a plurality of zonal completion packers 11 are arranged below the cable furcation cartridge 3 of the logging device 100 of the present invention and spaced outside the wall of the second tubing 5. The zonal completion packer 11 prevents fluid communication between the upper casing 300 and the perforated pipe 4 and the second tubing 5, and acts as a seal.
Specifically, as shown in FIG. 3, the downhole tool assembly 10 of the logging device 100 of the present invention includes a fiber optic loop sealer 101, an in-line pressure and temperature gauge assembly 102, and a tie-down anchor 103 connected in series. The fiber optic loop seal 101 prevents the end of the downhole optical fiber from being disturbed, and the anchor 103 secures the end of the fiber optic cable 9 within the seating assembly 6. Preferably, the downhole tool assembly 10 further comprises a weight-down device to facilitate lowering of the cable 9.
Specifically, the landing assembly 6 includes a plurality of oil pipe nipples 61, a landing nipple 62 disposed between two oil pipe nipples 61, and a circular plug 63, the plurality of oil pipe nipples 61 include a first section oil pipe nipple 611 and a last section oil pipe nipple 612, the first section oil pipe nipple 611 with the second oil pipe 5 is connected, the last section oil pipe nipple 612 with the circular plug 63 is connected, the fixing anchor 103 is in the clamping of setting in the landing nipple 62. The oil pipe nipple 61 and the landing nipple 62 are in threaded connection, and the round plug 63 plugs the tail end of the whole well completion pipe string. In this embodiment, the tubing nipple 61 is provided with two, namely a first section tubing nipple 611 and a last section tubing nipple 612, and the landing nipple 62 is provided between the first section tubing nipple 611 and the last section tubing nipple 612. The anchor 103 is big end down, and has the latch hook, so can sit and seal the chucking in the landing nipple 62.
Preferably, the upper portion of the cable 9 of the logging device 100 of the present invention is secured to the outside of the wall of the first tubing 2 by a cable collar protector 12. The cable collar protector 12 ensures that the upper portion of the optical cable 9 outside the pipe string 2 is not damaged. As shown in fig. 4 and 5, the cable collar protector 12 includes two rotatable parts, which are fastened by the threaded rod 121, and the two rotatable parts of the cable collar protector 12 surround to form the tubing hole 122 and the cable hole 123, so as to fix the cable 9 outside the wall of the first tubing 2 and prevent the cable 9 from being pinched outside the wall of the first tubing 2 and damaged by extrusion.
According to the optical fiber logging device 100 for horizontal well layered completion, a safety valve 1, a first oil pipe 2, an optical cable branching support barrel 3, a perforating pipe 4, a second oil pipe 5 and a seating assembly 6 which are connected in sequence are arranged, an electric submersible pump 7 and a penetrable packer 8 form a well completion pipe string with a stable structure, and an optical cable 9 is arranged on the well completion pipe string. Wherein, the lower part of the optical cable 9 is accommodated in the perforated pipe 4 and the second oil pipe 5, and the upper part of the optical cable 9 penetrates out from the branching end 33 of the optical cable branching support cylinder 3 and penetrates through the penetrable packer 8 upwards along the outside of the pipe wall of the first oil pipe 2 until penetrating out of the wellhead 200 upwards to be connected with the monitoring equipment on the ground. The optical fiber logging device 100 of the utility model adopts the optical fiber bifurcated supporting cylinder 3 to divide the optical fiber 9 into an upper part and a lower part inside and outside the pipe, so that the lower part can reach the target depth in the well to detect the parameters in the well, and the upper part can avoid the influence of the electric submersible pump 7 during oil pumping, thereby realizing the long-term and stable monitoring of special well conditions such as horizontal well layered well completion.
The above description is only for clearly illustrating the utility model and is not therefore to be considered as limiting the scope of the utility model, and all embodiments are not intended to be exhaustive, and all equivalent structural changes made by using the technical solutions of the present invention or other related technical fields directly/indirectly applied under the concept of the present invention are included in the scope of the present invention.
Claims (7)
1. The optical fiber logging device for horizontal well layered completion is characterized by comprising a safety valve, a first oil pipe, an optical cable branching support cylinder, a perforated pipe, a second oil pipe and a seating assembly which are sequentially connected from top to bottom, an electric submersible pump arranged on the first oil pipe, and a penetrable packer positioned between the safety valve and the electric submersible pump and sleeved outside the pipe wall of the first oil pipe;
the optical cable branching support cylinder comprises a first end connected with the first oil pipe, a second end connected with the perforated pipe, and a branching end which is positioned between the first end and the second end and provided with an opening;
the optical fiber logging device further comprises an optical cable and a downhole tool assembly connected to the lower end of the optical cable, the downhole tool assembly is fixed in the seating assembly, the lower portion of the optical cable is accommodated in the perforated pipe and the second oil pipe, and the upper portion of the optical cable penetrates out of the branched end of the optical cable branched supporting cylinder and upwards penetrates through the penetrating packer along the pipe wall of the first oil pipe until upwards penetrates out of a wellhead to be connected with monitoring equipment on the ground.
2. The fiber optic logging device of claim 1, wherein the first end, the second end, and the furcation end of the cable furcation cartridge form a three-way structure, and the furcation end is provided with a sealing structure to seal the exit location of the fiber optic cable.
3. The fiber optic logging device of claim 1 wherein the downhole tool assembly comprises, in series, a fiber optic loop sealer, an in-line pressure and temperature gauge combination, and a tie-down anchor.
4. The fiber optic logging device of claim 3 wherein the landing assembly comprises a plurality of tubing subs, a landing sub disposed between two tubing subs, and a plug;
the plurality of oil pipe short sections comprise a first oil pipe short section and a tail oil pipe short section, the first oil pipe short section is connected with the second oil pipe, the tail oil pipe short section is connected with the circular plug, and the fixing anchor is clamped in the setting short section.
5. The fiber optic logging device of claim 1 wherein a plurality of zonal completion packers are spaced outwardly from the wall of the second tubing below the cable furcation cartridge.
6. The fiber optic logging device of claim 1 wherein the perforated pipe is a collar-free perforated pipe and the second tubing is a collar-free tubing.
7. The fiber optic logging device of claim 1 wherein the upper portion of the fiber optic cable is secured to the outside of the wall of the first tubing by a cable collar protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122543054.0U CN216110681U (en) | 2021-10-21 | 2021-10-21 | Optical fiber logging device for horizontal well layered completion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122543054.0U CN216110681U (en) | 2021-10-21 | 2021-10-21 | Optical fiber logging device for horizontal well layered completion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216110681U true CN216110681U (en) | 2022-03-22 |
Family
ID=80694505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122543054.0U Active CN216110681U (en) | 2021-10-21 | 2021-10-21 | Optical fiber logging device for horizontal well layered completion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216110681U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756785A (en) * | 2021-10-21 | 2021-12-07 | 国兴汇金(深圳)科技有限公司 | Optical fiber logging device for horizontal well layered completion and well descending method |
-
2021
- 2021-10-21 CN CN202122543054.0U patent/CN216110681U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756785A (en) * | 2021-10-21 | 2021-12-07 | 国兴汇金(深圳)科技有限公司 | Optical fiber logging device for horizontal well layered completion and well descending method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105098537B (en) | A kind of horizontal wellbore logging cable butt joint device and onsite application method | |
| CN204858187U (en) | Horizontal well logging cable interfacing apparatus | |
| US6230800B1 (en) | Methods and apparatus for long term monitoring of a hydrocarbon reservoir | |
| RU130343U1 (en) | Borehole installation for simultaneous separate development of several operational facilities from one well | |
| CN216110681U (en) | Optical fiber logging device for horizontal well layered completion | |
| BR112015026719B1 (en) | HEAD ASSEMBLY FOR A CABLE, BOTTOM SYSTEM, AND METHOD FOR CONNECTING A CABLE TO A TOOL | |
| WO1998012417A1 (en) | Monitoring device and method | |
| CN204804820U (en) | Dynamic logging technology pole tubular column is carried to horizontal well pole pipe | |
| RU2603322C1 (en) | Method of downhole tools delivery to bottoms of drilled wells with complex profile, carrying out geophysical survey and complex for its implementation | |
| CN208330311U (en) | The cable control seperated layer water injection system of composite continuous oil pipe based on built-in cable | |
| US20040186665A1 (en) | Measurement device and support for use in a well | |
| CN216215841U (en) | Cable connecting piece capable of realizing quick butt joint of cables | |
| CN202001000U (en) | Optical fiber sensor for measuring downhole pressure | |
| CN105089627B (en) | Horizontal well rod tube conveys dynamic logging technique rod tube column and application method | |
| CN105089622B (en) | Horizontal well bar conveying well measuring technique rod tube column | |
| CN113756785A (en) | Optical fiber logging device for horizontal well layered completion and well descending method | |
| RU60619U1 (en) | TELEMETRIC SYSTEM FOR MONITORING WIRE AND HORIZONTAL WELL | |
| RU175906U1 (en) | Device for geophysical and hydrodynamic studies of production horizontal wells | |
| CN116006159A (en) | Monitoring device for gas storage monitoring well and application method thereof | |
| CN201953370U (en) | Hand-held detector for upright column cable terminal | |
| CN105089630B (en) | Horizontal well bar conveys dynamic logging technique rod tube column and application method | |
| BR112018008148B1 (en) | BOTTOM OF THE WELL SYSTEM WITH A TUBULAR WITH SIGNAL CONDUCTOR AND METHOD | |
| BR112018071400B1 (en) | DISTRIBUTED DOWN-HOLE SENSOR SYSTEM FOR A WELL, AND METHODS FOR DEPLOYING A DOWN-HOLE DISTRIBUTED SENSOR SYSTEM IN A WELL AND FOR OPERATING A DISTRIBUTED SENSOR SYSTEM | |
| CN105089626A (en) | Horizontal well rod and pipe conveying well logging method | |
| CN218324841U (en) | Underground temperature and pressure monitoring system based on sapphire optical fiber sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |