CN207436998U - For the water detection instrument of High water cut stop-spraying horizontal well - Google Patents
For the water detection instrument of High water cut stop-spraying horizontal well Download PDFInfo
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- CN207436998U CN207436998U CN201721635807.8U CN201721635807U CN207436998U CN 207436998 U CN207436998 U CN 207436998U CN 201721635807 U CN201721635807 U CN 201721635807U CN 207436998 U CN207436998 U CN 207436998U
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- tubing string
- horizontal well
- diversion trench
- wall
- tubing
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Abstract
The utility model discloses a kind of water detection instruments for High water cut stop-spraying horizontal well, tubing string including inner hollow, the cavity of the tubing string is connected with tubing string outer wall, the outer wall of tubing string is cased with packer, diversion trench is provided in tubing string, the junction of packer and tubing string is provided with ball-and-seat, and ball-and-seat can completely enclose diversion trench between diversion trench and the connectivity part of tubing string outer wall in diversion trench.The structure of the instrument is simple, it is of low cost, safeguard simple, quick construction, by being connected with coiled tubing, can freely be held in the palm in net horizontal section, water detection operation is carried out by coiled tubing gaslift, which solving can not the horizontal well of blowing the problem of cannot finding EXIT POINT.
Description
Technical field
The utility model belongs to petroleum oil well completion and underground work field, and in particular to one kind is used for High water cut stop-spraying horizontal well
Water detection instrument.
Background technology
Horizontal well refers to that hole angle reaches or close to 90 °, well bore creeps into the well of certain length along horizontal direction.Sometimes it is
Certain special needs, hole angle more than 90 °, can form the structure of " tilting upward ".In general, horizontal well is suitable for thin
Oil-gas Layer or fractured reservoirs, it is therefore intended that increase the bare area of oil-gas Layer.And horizontal well also refers to permeable section of well
(ventilative section) chimney filter is in the collection water buildings of horizontal positioned pumping (note) fluid.This kind of well has several important features：
1st, flowing of the water to horizontal well has larger vertical component velocity；
2nd, permeable section of well has large contact area with water-bearing layer；
3rd, the earth's surface outlet of well can avoid the permanent barrier of earth's surface (runway, river, highway and building etc.)；
4th, in the case of aqueous layer thickness very little, permeable section of very long horizontal well can be also installed.
The above feature of horizontal well makes its application in many fields more advantageous compared with Vertical Well in many practical applications,
In general, horizontal well substantially increases collection water buildings and gas, the contact surface of underground oil and gas in underground water unsaturation band
Product is effectively improved the extraction efficiency of fluid.
Horizontal well can significantly improve single well productivity compared with straight well exploitation, be widely applied at home, outside at present.But
Long horizontal well can then cause quick after there is High water cut because of reasons such as side, bottom-water breakthrough, injection water water string, crack communications
Water logging or even horizontal well is caused to break useless result.A variety of groundwater prospecting methods such as current existing well logging, machinery, tracer, but for
Can not blowing production horizontal well, due to rise stop-spraying tubing string after, shaft bottom can not be flowed naturally, and conventional water detection mode can not make
With, can only by means of special tool(s)s such as Y-tool, there are Completion cost is high, operation is complicated, in the horizontal well of conventional completed well
The shortcomings of can not using.
Utility model content
Technical problem to be solved in the utility model be it is existing can not the horizontal well of blowing production can not use conventional water detection
Mode, and special water detection tool construction is complicated, Completion cost is high, operating process trouble, and its purpose is to provide a kind of use
In the water detection instrument of High water cut stop-spraying horizontal well, which is connected with coiled tubing, can freely be held in the palm in net horizontal section, relies on
Coiled tubing gaslift carries out water detection operation, of low cost, safeguard simple, quick construction, solve can not blowing horizontal well
The problem of EXIT POINT cannot be found.
The utility model is achieved through the following technical solutions：
For the water detection instrument of High water cut stop-spraying horizontal well, the tubing string including inner hollow, the cavity and pipe of the tubing string
Column outer wall connects, and the outer wall of tubing string is cased with packer, is provided with diversion trench in tubing string, and the junction of packer and tubing string is located at
Between the connectivity part of diversion trench and tubing string outer wall, ball-and-seat is provided in diversion trench, and ball-and-seat can completely enclose diversion trench.
The conventional mode for carrying out water detection and instrument have much at present, can achieve the goal substantially, these mode principles are easy, instrument
Structure is also simple, and use cost is low, but this both for be capable of blowing production horizontal well, and for can not blowing production
Horizontal well, these water detection modes and instrument can not just meet use, can only be using special tool(s) come water detection, the structure of this kind of instrument
Complexity, it is bulky, and also Completion cost is high, operating process trouble, and the water detection instrument of this programme design, height can be contained
The stop-spraying horizontal well (can not blowing) of water carries out fixed point water detection, finds High water cut section, is carried for follow-up administer of High water cut horizontal well
It for foundation, by being connected with coiled tubing, can freely be held in the palm in net horizontal section, water detection work is carried out by coiled tubing gaslift
Industry, and use cost is cheap, safeguards simple, quick construction, solve can not the horizontal well of blowing cannot find EXIT POINT
Problem.
And according to actual use demand, the cavity of tubing string is designed as T-shaped chamber, one end of T-shaped chamber and the axis of tubing string are put down
It goes and is connected with the end of tubing string, the other both ends of T-shaped chamber are then working gas passage, connect to be formed with the outer wall of tubing string respectively
Working gas export, and so when being worked, can realize the position that air-flow is transported to needs, for the ease of connection, also in T
Cavity is provided with coiled tubing interface with the part that tubing string end connects at the inner wall close to tubing string end, and coiled tubing connects
Mouth is connected with tubing string end so that more secured when this instrument is connected with coiled tubing.
Wherein packer is preferably cup packer, by two cup packers be bonded to each other afterwards with the outer wall of tubing string without
Seam fitting.One connectivity part of diversion trench and tubing string is located between working gas outlet and cup packer, has been achieved in that gas
Stream circulating direction meets use demand.Cup packer is the common self-sealing component in oil field, and leather cup outer diameter is more than in casing
Footpath realizes the sealing of packer by the interference fit of leather cup and tubing string, which reduces Wel packing plug water construction process, energy
No killing well operation without open flow is conveniently realized, and two-way can bear high pressure, service life is long.This instrument is insulated using double leather cup
Device is bonded, and sealing effect is more preferably.
The tubing string of the water detection instrument is connected with coiled tubing, and is sent to shaft bottom by coiled tubing and dragged in horizontal segment
Dynamic continuously to pinpoint water detection to realize, after searching pipe column tripping in horizontal well toe, coiled tubing starts to be pumped into nitrogen to shaft bottom, double
Well fluids downhole on the outside of cup packer starts to flow under the action of nitrogen, by the diversion trench on the outside of double leather cup packer into
Enter inside tubing string, flowed out through the diversion trench on the inside of double leather cup packer, into pit shaft after by small annular space (between coiled tubing-oil pipe
Annular space) outflow well head, detects the formation fluid of well head outflow and repeatedly the continuous water detection operation of horizontal segment can be realized in this process.
The utility model compared with prior art, has the following advantages and advantages：The structure of the instrument is simple, into
This is cheap, maintenance is simple, quick construction, by being connected with coiled tubing, can freely be held in the palm in net horizontal section, by continuous oil
Pipe gaslift carries out water detection operation, and which solving can not the horizontal well of blowing the problem of cannot finding EXIT POINT.
Description of the drawings
Attached drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part does not form the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the utility model structure diagram.
Mark and corresponding parts title in attached drawing：
1- coiled tubing interfaces, 2- water conservancy diversion notch one, 3- cup packers, 4- water conservancy diversion notch two, 5- working gas passages, 6-
It is dead stifled, 7- ball-and-seats, 8-T cavities, 9- tubing strings.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment
As shown in Figure 1, for the water detection instrument of High water cut stop-spraying horizontal well, the tubing string 9 including inner hollow, tubing string 9
Cavity is T-shaped chamber 8, and one end of T-shaped chamber 8 is parallel with the axis of tubing string 9 and is connected with the end of tubing string 9, other the two of T-shaped chamber 8
The outer wall respectively with tubing string 9 is held to connect, this two parts passage is named as working gas passage 5, the outer wall connectivity part with tubing string 9
Working gas outlet is named as, tubing string 9 forms dead stifled 6 away from the end that T-shaped chamber 8 connects.Skin there are two also being covered in the outer wall of tubing string 9
Bowl packer 3, and the outer wall of two cup packers 3 and tubing string 9 is seamless applying.Diversion trench also is provided in tubing string 9, will be led
Chute both ends and the outer wall connectivity part of tubing string 9 are respectively designated as water conservancy diversion notch 1 and water conservancy diversion notch 24, wherein cup packer 3
Between water conservancy diversion notch 1 and water conservancy diversion notch 24, water conservancy diversion notch 24 is located at working gas outlet and skin for junction with tubing string 9
Between bowl packer 3, ball-and-seat 7 is provided in diversion trench, ball-and-seat 7 is existing structure, and ball-and-seat 7 can completely enclose
Diversion trench, formation are blocked, and by the valve ball of the open-top ball-and-seat 7 of air-flow, so as to expose passage, it is logical inside diversion trench to form air-flow
It crosses.For the ease of being attached with coiled tubing, so in T-shaped chamber 8 with the part that 9 end of tubing string connects close to 9 end of tubing string
Coiled tubing interface 1 is provided at the inner wall of head, and coiled tubing interface 1 is connected with 9 end of tubing string.
The utility model is connected by coiled tubing interface 1 with coiled tubing, by coiled tubing tripping in net horizontal section toe
Portion is pumped into nitrogen by coiled tubing to shaft bottom, and nitrogen, from working gas passage 5 into pit shaft, is injected, well by T-shaped chamber 8 with nitrogen
Bottom pressure raises, and cup packer 3 is set, the liquid of isolation cup packer both sides, and the liquid in pit shaft is in the effect of nitrogen
Under start to flow, from water conservancy diversion notch 24 into diversion trench, ball-and-seat 7 is pushed open, by water conservancy diversion notch 1 into pit shaft and passing through
Well head is returned out by small annular space (annular space between oil pipe, coiled tubing), by being analyzed and determined in well head to Produced Liquid, you can confirm
Whether instrument position is EXIT POINT, and the water detection work of full net horizontal section can be completed in the process of repetition.The utility model
It is simple in structure, it is of low cost, safeguard simple, quick construction, by being connected with coiled tubing, can freely be held in the palm in net horizontal section
It is dynamic, water detection operation is carried out by coiled tubing gaslift, which solving can not the horizontal well of blowing the problem of cannot finding EXIT POINT.
Above-described specific embodiment, the purpose of this utility model, technical solution and advantageous effect have been carried out into
One step is described in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (5)
1. for the water detection instrument of High water cut stop-spraying horizontal well, which is characterized in that the tubing string (9) including inner hollow, the pipe
The cavity of column is connected with tubing string (9) outer wall, and the outer wall of tubing string (9) is cased with packer, and diversion trench is provided in tubing string (9), envelope
Between being located at the connectivity part of diversion trench and tubing string (9) outer wall every the junction of device and tubing string (9), ball-and-seat is provided in diversion trench
(7), and ball-and-seat (7) can completely enclose diversion trench.
2. the water detection instrument according to claim 1 for High water cut stop-spraying horizontal well, which is characterized in that the tubing string
Cavity is T-shaped chamber (8), and one end of T-shaped chamber (8) is parallel with the axis of tubing string (9) and is connected with the end of tubing string (9), T-shaped chamber
(8) other both ends connect to form working gas outlet respectively with the outer wall of tubing string (9).
3. the water detection instrument according to claim 2 for High water cut stop-spraying horizontal well, which is characterized in that the T-shaped chamber
(8) coiled tubing interface (1) is provided at the inner wall close to tubing string (9) end with the part that tubing string (9) end connects, and even
Continuous tubing interface (1) is connected with tubing string (9) end.
4. the water detection instrument according to claim 2 for High water cut stop-spraying horizontal well, which is characterized in that the packer
For two cup packers (3), and cup packer (3) be bonded to each other after it is seamless applying with the outer wall of tubing string (9).
5. the water detection instrument according to claim 4 for High water cut stop-spraying horizontal well, which is characterized in that the diversion trench
It is located at a connectivity part of tubing string (9) between working gas outlet and cup packer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721635807.8U CN207436998U (en) | 2017-11-29 | 2017-11-29 | For the water detection instrument of High water cut stop-spraying horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721635807.8U CN207436998U (en) | 2017-11-29 | 2017-11-29 | For the water detection instrument of High water cut stop-spraying horizontal well |
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| Publication Number | Publication Date |
|---|---|
| CN207436998U true CN207436998U (en) | 2018-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721635807.8U Active CN207436998U (en) | 2017-11-29 | 2017-11-29 | For the water detection instrument of High water cut stop-spraying horizontal well |
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| CN (1) | CN207436998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894517A (en) * | 2020-07-23 | 2020-11-06 | 陈少同 | Underground check valve |
-
2017
- 2017-11-29 CN CN201721635807.8U patent/CN207436998U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894517A (en) * | 2020-07-23 | 2020-11-06 | 陈少同 | Underground check valve |
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