CN106567694A - Intelligent water controlling pup joint - Google Patents
Intelligent water controlling pup joint Download PDFInfo
- Publication number
- CN106567694A CN106567694A CN201611020205.1A CN201611020205A CN106567694A CN 106567694 A CN106567694 A CN 106567694A CN 201611020205 A CN201611020205 A CN 201611020205A CN 106567694 A CN106567694 A CN 106567694A
- Authority
- CN
- China
- Prior art keywords
- base tube
- intelligent water
- pipe nipple
- flow control
- self
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
Abstract
The invention provides an intelligent water controlling pup joint comprising a base tube and autonomous inflow control devices. A plurality of centralizing edges are arranged on the surface of the base tube in the length direction. A groove is formed between every two adjacent centralizing edges. An installation hole penetrating through the inner wall of the base tube is formed in each groove. The autonomous inflow control devices are arranged in the installation holes of the base tube. The outer end face of each autonomous inflow control device is lower than the outer end face of each centralizing edge. The intelligent water controlling pup joint does not need to be used in cooperation with a centralizer. The outer end face of each autonomous inflow control device is lower than the outer end face of each centralizing edge, so that the situation that because the autonomous inflow control devices are in direct contact with the wall of a sleeve and generate friction, the autonomous inflow control devices are damaged is avoided, the autonomous inflow control devices are effectively protected, and the service life of each autonomous inflow control device is prolonged; besides, the grooves between the centralizing edges guarantee flow channel intervals allowing liquid to flow into the autonomous inflow control devices; and meanwhile, because it is not needed to install the centralizer on the outer portion of the base tube, the base tube with the wall thickness greatly larger than the thickness of each autonomous inflow control device can be selected, and a full-aperture inner portion of the intelligent water controlling pup joint is achieved.
Description
Technical field
The present invention relates to a kind of oil well completion tubing string, more particularly to a kind of intelligent water-controlled pipe nipple.
Background technology
With the development of petroleum exploration and development technology, using horizontal well technology development of fields, raising oil field is had become
Recovery ratio and well yield, exploitation remaining oil, an effective technology means for reducing production cost per tone oil.Horizontal well increase pit shaft with
The contact area of oil reservoir, can preferably develop the larger oil reservoir of oil sheet or vertical permeability, the work in exploitation petroleum resources
With increasingly important.And at present country's horizontal well majority has been enter into high water cut rate, yield declines rapidly after horizontal well production water breakthrough.
Most of horizontal wells in some oil fields have even just been gone into operation with regard to water breakthrough soon, and the oil recovery benefit for making horizontal well is subject to serious shadow
Ring.Horizontal well is due to the particularity of well track, once water outlet is difficult control.Therefore, each oil field is all in the urgent need to a kind of effective
Control horizontal well water outlet, increases crude output, extends the water control technique in horizontal well life-span.
At present, the horizontal well water control technique in oil field is applied mainly there are three kinds：First, it is segmented variable density screen casing water control technique：
The technology changes the Kong Mi of every section of screen casing of horizontal segment according to the change of Reservoir Permeability, close adjusting throttling using different holes,
Adjustment bottom pressure section, for Homogeneous Reservoir, reduces, increase difference pressuring loss close with stomidium；Increase toe-end hole is close, reduces pressure reduction
Loss, to reach balanced production pressure reduction, reduces the purpose of bottom water coning speed.2nd, central canal water control technique：The principle of the technology
It is on the basis of screen casing, bushing pipe or perforation completion, a minor diameter tubing to be hung under horizontal segment, stretches into the fixed length of net horizontal section one
Degree, and the annular space between little oil pipe and sleeve pipe is closed with packer, change the liquid flow direction of horizontal well heel end, cut open pressure
Face and pit shaft inflow profile become gentle.3rd, ICD water control techniques：ICD (Inflow Control Device) is a kind of balanced
Flow control apparatus, equilibrium level section is lost along stroke pressure, obtains approaches uniformity inflow profile of the oil reservoir along horizontal well pit shaft.
The application of ICD devices is combined with screen casing mostly, and reservoir fluid Jing screen casings enter the annular gap between base tube and screen casing, flows into ICD
Device, enters back in base tube and is plucked out of the ground, and reaches balancing flow control purpose.
But, all there are two major defects in currently used these water control techniques：First, cannot be according to each section of down-hole oil
How many layer moisture content is carried out automatically and real-time regulation, segmentation variable density screen casing water control technique need to according to the change of Reservoir Permeability,
The screen casing hole for being pre-designed per section in horizontal segment is close；Central canal water control technique must in advance according to reservoir geology feature design centre
Pipe diameter and the length for stretching into horizontal segment；ICD water control techniques are also the number that ICD water control valves are pre-designed according to reservoir geologic characteristic
Amount.2nd, existing horizontal well water control technique can only quantitatively limit the inflow of down-hole fluid-mixing, and reservoir geology number is collected in advance
According to, deisgn product and tool parameters after data analysiss are carried out, production profile equilibrium can be reached after expecting to go into the well, so as to reduce water
Coning.But in practical application, down-hole state be do not stop change, once using it is existing these control wetting system tubing strings enter well,
Parameter cannot be adjusted or changed, and preferably control water effect is not reached at all.
Intelligent water-controlled technology becomes intelligent water-controlled of the passive type control water into active, energy by self-regulation flow control valve (AICD)
With the dynamic change of underground oil-water viscosity of mixed liquid, oil-water mixture is automatically adjusted into the flow of extraction system；It is effectively anti-
The quick coning of sealing horizontal well bottom water, controls High water cut output, extends low aqueous productive life and oil well service life；With resistance to height
The characteristic such as warm high pressure, corrosion-resistant.
Individually self-regulation flow control valve cannot be directly accessed intelligent water-controlled completion tubular column, if in tubing nipple tube wall
Upper radial bore, tapping is threadably secured self-regulation flow control valve on tubing nipple, it is desirable to tubing nipple
Wall thickness be not less than 12mm, and tubing nipple two ends must connect centralizer to reduce in self-regulation flow control valve and sleeve pipe
The contact friction of wall.The method is required and limited to oil pipe wall thickness, installs complicated, and liquid flows into self-regulation flow control valve
Runner cannot be effectively ensured, be unfavorable for the application and popularization of intelligent water-controlled technology.
The content of the invention
Based on this, it is necessary to there is oil pipe wall thickness and be subject to for installing self-regulation flow control valve on tubing nipple at present
Restriction, installs complicated, and liquid flows into the problem that the runner of self-regulation flow control valve cannot be effectively ensured, there is provided one kind is certainly
With righting function, ensure that liquid flows into effective runner of self-regulation flow control valve, the interior latus rectum of pipe nipple is unrestricted, is easy to peace
The intelligent water-controlled pipe nipple of dress.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of intelligent water-controlled pipe nipple, including base tube and self-regulation flow control valve, the surface of the base tube is along its length
Some centering edges are provided with, arrange fluted between the adjacent centering edge, offered in the groove and penetrate in base tube
The installing hole of wall；The self-regulation flow control valve is arranged in the installing hole of the base tube, and self-regulation flow control valve is installed
Outer face of the outer face after in place less than centering edge.
Wherein in one embodiment, the two ends of the base tube are separately provided for the company being connected with oil pipe or sleeve pipe
Socket part.
Wherein in one embodiment, the connecting portion of described base tube one end is pipe nipple internal thread segment, the connecting portion of the other end
For pipe nipple external thread section.
Wherein in one embodiment, often cover the intelligent water-controlled pipe nipple and one or more self-regulation flowing controls are set
Valve.
Wherein in one embodiment, multiple self-regulation flow control valves are separately positioned in different grooves, positioned at not
Arrange along base tube axile displacement with the self-regulation flow control valve in groove.
Wherein in one embodiment, the centering edge is twist arranged along base tube surface, and the groove is along base tube table
Face is twist arranged.
Wherein in one embodiment, the two ends of the centering edge are machined with chamfering, and the outer surface of centering edge is cambered surface.
Wherein in one embodiment, the installing hole includes circular hole and the screwed hole being radially connected along base tube, described
Screwed hole is connected with base tube, and the self-regulation flow control valve is threaded in screwed hole.
Wherein in one embodiment, the bottom land of the groove is plane, and the depth of groove is 3mm～5mm.
Wherein in one embodiment, the maximum outside diameter of the base tube is 60mm～245mm, thickness of pipe wall be 20mm～
30mm, length is 45cm～75cm.
The invention has the beneficial effects as follows：Intelligent water-controlled pipe nipple of the present invention is provided with the centering edge of evagination on the surface of base tube,
Without the need for extra supporting centralizer, self-regulation flow control valve, self-regulation flow control valve peace are installed in the groove between centering edge
Be attached to the outer face of the outer face of position less than centering edge, it is to avoid self-regulation flow control valve directly contact with casing wall rub and
Abrasion is caused, self-regulation flow control valve is effectively protected, its service life is extended；And ensure that liquid flows into self-regulation
Effective runner of flow control valve；The internal diameter for making pipe nipple realizes full-bore.
The two ends of intelligent water-controlled pipe nipple of the present invention arrange tubing round thread, directly can be connected with same specification oil pipe, are easily installed
Use.
Description of the drawings
Fig. 1 is the front sectional view of intelligent water-controlled pipe nipple one embodiment of the present invention；
Fig. 2 is A-A in Fig. 1 to sectional view；
Fig. 3 is the front sectional view of base tube in intelligent water-controlled pipe nipple one embodiment of the present invention；
Fig. 4 is the front sectional view of second embodiment of intelligent water-controlled pipe nipple of the present invention；
Fig. 5 is the front sectional view of 3rd embodiment of intelligent water-controlled pipe nipple of the present invention.
Wherein：
100- base tubes；
110- centering edges；
120- grooves；
130- installing holes；
131- circular holes；
132- screwed holes；
140- pipe nipple internal thread segments；
150- pipe nipple external thread sections；
200- self-regulation flow control valves.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, by the following examples, and with reference to attached
Figure, is further elaborated to intelligent water-controlled pipe nipple of the present invention.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Referring to shown in Fig. 1 and Fig. 2, intelligent water-controlled pipe nipple of the present invention includes base tube 100 and self-regulation flow control valve 200,
The surface of base tube 100 is provided with along its length some centering edges 110, arranges fluted between adjacent centering edge 110
120, the installing hole 130 for penetrating the inwall of base tube 100 is offered in groove 120；Self-regulation flow control valve 200 is arranged on base tube
In 100 installing hole 130, self-regulation flow control valve 200 be installed in place after outer face less than centering edge 110 outer face.
When intelligent water-controlled pipe nipple of the present invention is entered in down-hole casing with oil pipe, the centering edge 110 on the surface of base tube 100 is interior with sleeve pipe
Wall contacts, it is to avoid self-regulation flow control valve 200 occurs frictional impact with sleeve pipe, and centering edge 110 is served to self-regulation
The protective effect of flow control valve 200, extends the service life of self-regulation flow control valve 200；And centering edge 110 and pit shaft
The space that screen casing or sleeve pipe are formed ensure that liquid flows into effective runner of self-regulation flow control valve 200, be conducive to playing intelligence
The efficiency of energy water control technique.
Further, the two ends of base tube 100 are separately provided for the connecting portion being connected with oil pipe or sleeve pipe.The present invention
When transferring into oil well, needs are connected intelligent water-controlled pipe nipple with oil pipe or sleeve pipe, and meeting basis adopts liquid in an oil well
Amount is same to enter at present multiple intelligent water-controlled pipe nipples, so arrange connecting portion at the two ends of base tube 100 to be used to be connected with oil pipe or sleeve pipe
Connect, be easy to concatenation to form completion tubular column.
Specifically, the connecting portion of the one end of base tube 100 is pipe nipple internal thread segment 140, and the connecting portion of the other end is the outer spiral shell of pipe nipple
Stricture of vagina section 150.Wherein pipe nipple female thread and pipe nipple external screw thread are industry standard, are matched with the screw thread of connected pipes or sleeve pipe, are resisted
Tensile strength is identical with corresponding oil pipe or tensile resistance.
With reference to shown in Fig. 2 and Fig. 3, installing hole 130 includes prolonging circular hole 131 and the screwed hole that the radial direction of base tube 100 is connected
132, screwed hole 132 is connected with the endoporus of base tube 100, and self-regulation flow control valve 200 is threaded in screwed hole 132.From
The bottom surface for adjusting flow control valve 200 is provided with setting sealing ring in seal groove, seal groove, and sealing ring is upper flat with circular hole 131
Certain sealing function is played in face contact, and self-regulation flow control valve 200 is threadedly attached in screwed hole 132, during installation
Thread sealing grease is smeared, using kit, it is ensured that firmly install, seal.
Further, often cover intelligent water-controlled pipe nipple and one or more self-regulation flow control valves 200, self-regulation flowing are set
The quantity of control valve 200 can be selected according to the situation of Discharge rate and the scope of operation, can be appropriate in the case that Discharge rate is big
Increase the quantity of self-regulation flow control valve 200.
It is shown in Figure 4, in one of embodiment of the present invention, when needing to arrange multiple self-regulation flow control valves
When 200, multiple self-regulation flow control valves 200 can be separately positioned in multiple grooves 120, in different grooves 120
Self-regulation flow control valve 200 along the axile displacement of base tube 100 arrange.Its purpose is to ensure the maximum intensity of base tube 100
Change, it is to avoid installing hole 130 is excessively concentrated in radially opening up for base tube 100, impact is produced on the intensity of base tube 100；Simultaneously
It is in order that liquid distribution is driven into into multiple runners, to be conducive to Jing self-regulations flow control valve 200 to enter in base tube 100.
It is shown in Figure 5, the present invention one of embodiment in, centering edge 110 along the surface of base tube 100 twist
Arrange, groove 120 is twist arranged along the surface of base tube 100, and the tension that spiral centering edge 110 improves base tube 100 is strong
Degree.
Further, the two ends of centering edge 110 are machined with chamfering, and the outer surface of centering edge 110 is cambered surface.Centering edge 110
The chamfering at two ends and the outer surface of arc can contribute to base tube 100 can smoothly be entered well and rise.
Specifically, the bottom land of groove 120 is plane, and the depth of groove 120 is 3mm～5mm, it is ensured that self-regulation is flowed
After control valve 200 is arranged on base tube 100, after centering edge 110 can be installed in place higher than self-regulation flow control valve 200
Top surface.
Specifically, the maximum outside diameter of base tube 100 be 60mm～245mm, thickness of pipe wall be 20mm～30mm, length be 40cm～
75cm。
Here it should be noted that：Self-regulation flow control valve 200 involved in the present invention can adopt pct international patent
A kind of flow control valve disclosed in application WO2008/004875A1, the control water principle of the control valve：According to Bernoulli equation fluid
Dynamic pressure and the constant theory of local pressure loss sum, the change control apparatus of the different fluid viscosity by flowing through device
The aperture of interior video disc.When the higher oil-water mixture of relative viscosity flows through valve body, video disc aperture is larger；When relative viscosity it is relatively low
Water or during air-flow Jing valve bodies, video disc turns aperture down automatically because of the pressure drop that viscosity B coefficent causes, so as to the mesh for reaching control water, increasing oil
's.
The intelligent water-controlled pipe nipple of the present invention is easy to use, when entering well directly with oil pipe or telescopic joint, while supporting packing
Device, segmentation control water.Self-regulation flow control valve can be controlled according to its aperture of state (viscosity B coefficent) adjust automatically of well fluids downhole
High water cut position Liquid output, improves low water-bearing interval oil production, so as to reduce full well moisture content, reaches stable yields volume increase control water one
The purpose of change.All-weather intelligent water-control oil-increasing after completion, and simple structure, easy to operate, the old well of new well and different completion sides
The well of formula is suitable for, applied widely, with very strong economic benefits and social effect.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of intelligent water-controlled pipe nipple, it is characterised in that include：
Base tube (100), the surface of the base tube (100) is provided with along its length some centering edges (110), and adjacent is described
Arrange between centering edge (110) fluted (120), offer and penetrate the installation of base tube (100) inwall in the groove (120)
Hole (130)；
Self-regulation flow control valve (200), installation of the self-regulation flow control valve (200) installed in the base tube (100)
In hole (130), self-regulation flow control valve (200) be installed in place after outer face less than centering edge (110) outer face.
2. intelligent water-controlled pipe nipple according to claim 1, it is characterised in that the two ends of the base tube (100) are respectively provided with
There is the connecting portion for being connected with oil pipe or sleeve pipe.
3. intelligent water-controlled pipe nipple according to claim 2, it is characterised in that the connecting portion of described base tube (100) one end is
Pipe nipple internal thread segment (140), the connecting portion of the other end is pipe nipple external thread section (150).
4. intelligent water-controlled pipe nipple according to claim 1, it is characterised in that often cover the intelligent water-controlled pipe nipple and arrange
Or multiple self-regulation flow control valves (200).
5. intelligent water-controlled pipe nipple according to claim 4, it is characterised in that multiple self-regulation flow control valves (200) point
It is not arranged in different grooves (120), the self-regulation flow control valve (200) in different grooves (120) is along base tube
(100) axile displacement is arranged.
6. intelligent water-controlled pipe nipple according to claim 1, it is characterised in that the centering edge (110) is along base tube (100) table
Face is twist arranged, and the groove (120) is twist arranged along base tube (100) surface.
7. intelligent water-controlled pipe nipple according to claim 1, it is characterised in that the two ends of the centering edge (110) are machined with
Chamfering, the outer surface of centering edge (110) is cambered surface.
8. intelligent water-controlled pipe nipple according to claim 1, it is characterised in that the installing hole (130) is included along base tube
(100) circular hole (131) being radially connected and screwed hole (132), the screwed hole (132) connects with base tube (100), described
Self-regulation flow control valve (200) is threaded in screwed hole (132).
9. intelligent water-controlled pipe nipple according to claim 1, it is characterised in that the bottom land of the groove (120) is plane, recessed
The depth of groove (120) is 3mm～5mm.
10. intelligent water-controlled pipe nipple according to claim 1, it is characterised in that the maximum outside diameter of the base tube (100) is
60mm～245mm, thickness of pipe wall is 20mm～30mm, and length is 40cm～75cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611020205.1A CN106567694A (en) | 2016-11-14 | 2016-11-14 | Intelligent water controlling pup joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611020205.1A CN106567694A (en) | 2016-11-14 | 2016-11-14 | Intelligent water controlling pup joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106567694A true CN106567694A (en) | 2017-04-19 |
Family
ID=58542315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611020205.1A Pending CN106567694A (en) | 2016-11-14 | 2016-11-14 | Intelligent water controlling pup joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106567694A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200102806A1 (en) * | 2017-06-22 | 2020-04-02 | Starse Energy And Technology (Group) Co., Ltd | Composite water-controlling and flow-limiting device and screen pipe thereof |
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| AU2001258322A1 (en) * | 2000-04-18 | 2002-01-17 | Gentium S.R.L. | Formulation having mobilising activity |
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| CN203531785U (en) * | 2013-10-21 | 2014-04-09 | 成都利特能源技术有限公司 | Centralizer using liquid to assist in cleaning cuttings bed |
| CN204283367U (en) * | 2014-12-08 | 2015-04-22 | 众通（北京）能源技术有限公司 | Horizontal well Intelligent water-controlled completion tubular column |
| CN104929592A (en) * | 2015-05-29 | 2015-09-23 | 北京斯盛达石油设备科技有限公司 | Tubular column for monitoring water searching and blocking and reservoir pressure of horizontal well and using method of tubular column |
| CN206329327U (en) * | 2016-11-14 | 2017-07-14 | 北京国泰通源技术有限公司 | Intelligent water-controlled pipe nipple |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1147777A1 (en) * | 2000-04-18 | 2001-10-24 | Crinos Industria Farmacobiologica S.p.A. | Combination of defibrotide and G-CSF and its use to activate haematopoietic progenitors |
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2016
- 2016-11-14 CN CN201611020205.1A patent/CN106567694A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001258322A1 (en) * | 2000-04-18 | 2002-01-17 | Gentium S.R.L. | Formulation having mobilising activity |
| CN201351463Y (en) * | 2009-02-11 | 2009-11-25 | 成都恩承油气有限公司 | Integral drag-reduction casing centralizer |
| CN203531785U (en) * | 2013-10-21 | 2014-04-09 | 成都利特能源技术有限公司 | Centralizer using liquid to assist in cleaning cuttings bed |
| CN204283367U (en) * | 2014-12-08 | 2015-04-22 | 众通（北京）能源技术有限公司 | Horizontal well Intelligent water-controlled completion tubular column |
| CN104929592A (en) * | 2015-05-29 | 2015-09-23 | 北京斯盛达石油设备科技有限公司 | Tubular column for monitoring water searching and blocking and reservoir pressure of horizontal well and using method of tubular column |
| CN206329327U (en) * | 2016-11-14 | 2017-07-14 | 北京国泰通源技术有限公司 | Intelligent water-controlled pipe nipple |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200102806A1 (en) * | 2017-06-22 | 2020-04-02 | Starse Energy And Technology (Group) Co., Ltd | Composite water-controlling and flow-limiting device and screen pipe thereof |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20181217 Address after: 138000 Jinghu District, Songyuan Economic and Technological Development Zone, Songyuan City, Jilin Province (No. 317, Liuhe Company) Applicant after: Jilin Guotai Petroleum Development Co., Ltd. Address before: Room 1801-A2018-19, Floor 20, Building 3, Haidian Street, Haidian District, Beijing Applicant before: Beijing Cathay Pacific Technology Co., Ltd. |
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