CN106545328A - A kind of detection preforation tunnel position the method for cleaning eyelet - Google Patents
A kind of detection preforation tunnel position the method for cleaning eyelet Download PDFInfo
- Publication number
- CN106545328A CN106545328A CN201610904058.8A CN201610904058A CN106545328A CN 106545328 A CN106545328 A CN 106545328A CN 201610904058 A CN201610904058 A CN 201610904058A CN 106545328 A CN106545328 A CN 106545328A
- Authority
- CN
- China
- Prior art keywords
- cleaning
- preforation tunnel
- eyelet
- detection
- flow rate
- 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.)
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B47/00—Survey of boreholes or wells
Abstract
The present invention relates to a kind of method for detecting preforation tunnel position and cleaning eyelet.Its technical scheme is：One is to judge hole position, the eyelet area of oil well perforation will be entered under detection cleaning device, it is different from the flow field for being ejected into casing wall position and being formed that jet is ejected into preforation tunnel position, detects the change in flow of fixed point in jet flow field using flow rate detection instrument, judges hole position；Two is cleaning eyelet, rotates after determining hole position within first week, then carries out second week rotary nozzle washing and cleaning operation, and rotation fixed angle is fixed washing and cleaning operation at the hole position of above-mentioned determination every time, and the whole eyelet area of continuation cleaning is above put forward after finishing.Beneficial effect is：Eyelet center can be more accurately determined, determines that hole position and clean in place are completed by kit, limited hydraulic energy can be sufficiently used for eyelet cleaning, therefore cleaning performance relatively subrange jet cleaning before is more preferable, operation is simpler.
Description
Technical field
The present invention relates to a kind of oil field perforation detection and cleaning method, more particularly to a kind of detection preforation tunnel position is simultaneously clearly
The method of hole flushing eye.
Background technology
Perforating oil gas well is a key technology in Petroleum finance, and oil gas well completion operating system engineering
One of.At present, completion method widely used both at home and abroad is perforation completion.Oil-gas Layer can be caused in perforation completion implementation process
Various infringements.After lined-cavity charge blast, formation rock is crushed and is compacted by high energy gas, and by rock particle from shell hole region
Clamp-on the oil-gas Layer of surrounding, formed around the shell hole and there are about the thick compaction bands of 12.6mm, in compaction band its permeability well below
The permeability of prime stratum, this can block formation flow duct, reduce oil gas well production.Some perforation well capacities only have natural
Oil gas well capacity even can be down to zero when serious by the 20%-30% of production capacity.Therefore, the matter that eyelet is cleaned after perforation
Size of the magnitude relation to field output.At present, site perforation eyelet cleaning technique is to carry out office to perforated interval using rotary nozzle
Portion's rotary spray wash, the technology can not accurately determine the position of eyelet, it is impossible to which limited jet energy targetedly should
Cleaned for eyelet position, ultimately resulted in that cleaning performance is not good and the waste of waterpower resourses, the present invention is exactly above-mentioned
Carry out under research background.
The content of the invention
The purpose of the present invention is aiming at the drawbacks described above of prior art presence, there is provided a kind of detection preforation tunnel position is simultaneously
Cleaning eyelet method, eyelet center can be accurately determined, and concentrate clean in place, cleaning performance relatively before local model
Enclose jet cleaning more preferable.
Its technical scheme is realized using following steps：
One is to judge hole position, will enter the eyelet area of oil well perforation, described detection cleaning device under detection cleaning device
Including the bottom of pressure duct, motor and controlling organization, flow rate detection instrument and shower nozzle, the motor and controlling organization
Fixed flow rate survey meter and shower nozzle are installed, top is connected at well head by pressure duct；First by motor, flow field is made
Flow rate detection instrument it is synchronous with shower nozzle with constant speed rotate, while high-pressure water jet carries out the constant speed of constant flow rate to casing wall
Degree injection, detects change in flow by flow rate detection instrument, and draws the curve that flow velocity changes with the anglec of rotation with computer, if certain
Section current curve is unstable, changes greatly compared with other positions, then show that the position is hole position, rotate a circle and analyze
Go out all hole positions of the plane；
Two is cleaning eyelet, rotates after determining hole position within first week, then carries out second week rotary nozzle washing and cleaning operation, revolves every time
Turn fixed angle at the hole position of above-mentioned determination, be fixed washing and cleaning operation；After cleaning is finished, then made by controlling organization
The perforation vertical interval that flow rate detection instrument and shower nozzle rises continues detection hole position and simultaneously cleans eyelet, until perforated interval it is complete
Portion cleaning terminate, shut down and on extract detection cleaning device, complete whole cleaning process.
High-pressure water jet shower nozzle of the above-mentioned shower nozzle using a diameter of 2mm, and it is less than preforation tunnel diameter.
Above-mentioned flow rate detection instrument and shower nozzle synchronous rotary, detection flow field velocity change.
Detection pump pressure during the unlatching of above-mentioned pressure duct is 4.5-5.5MPa, and cleaning pump pressure during cleaning is
30MPa, one perforated hole of cleaning are 3-5 minutes between at the moment.
When hole position is judged, the bottom of the eyelet area of oil well perforation will be entered under detection cleaning device, cleaning is finished
After the preforation tunnel of bottom, perforation spacing 10cm, detection cleaning last layer perforation, until completing all of perforation area are above carried
Domain, perforated zone are well depth 1m.
The invention has the beneficial effects as follows：The present invention determines the position of eyelet by detecting jet flow field change, relatively before
Method can more accurately determine eyelet center, determine that hole position and clean in place are completed by kit, can be by
Limited hydraulic energy is sufficiently used for eyelet cleaning, therefore cleaning performance relatively subrange jet cleaning before is more preferable, and operation is more
Simply.
Description of the drawings
Accompanying drawing 1 is the structural representation of present invention detection cleaning perforation；
Accompanying drawing 2 is the FB(flow block) of present invention detection cleaning method；
In upper figure：The borehole wall 1, cement sheath 2, casing wall 3, pressure duct 4, motor and controlling organization 5,6 and of flow rate detection instrument
Shower nozzle 7, preforation tunnel 8.
Specific embodiment
With reference to accompanying drawing, the invention will be further described：
The present invention is realized using following steps：A kind of high-pressure water jet shower nozzle 7 of a diameter of 2mm is selected, it is straight less than preforation tunnel 8
Footpath (about 10mm), preforation tunnel 8 are located at the perforated zone of 3 bottom of casing wall, are cement sheath 2 between the borehole wall 1 and casing wall 3.Spray
7 are connected with motor and controlling organization 5 by pressure duct 4, flow rate detection instrument 6 and the shower nozzle synchronous rotary in flow field, are visited
Flow field velocity change is surveyed, the upper end of pressure duct 4 is connected with wellhead assembly, is entered under the detection cleaning device that the said equipment is constituted
Perforation borehole bottom, concrete operation step is as shown in Fig. 2 the detection cleaning device position of adjustment down-hole, turn on pump, are pumped as detection
Pump pressure (about 5MPa), after the current curve that computer is drawn is stable, by adjusting motor at the uniform velocity rotary nozzle 7, flow velocity is visited
The detection flow field velocity change of instrument 6 is surveyed, and passes data to the computer on ground, draw change in flow curve.Shower nozzle 7 rotates
After one week, stop motor, analyze the particular location that curvilinear motion draws preforation tunnel 8, after analysis is finished, rotary nozzle 7
Cleaning pump pressure (about 30MPa) is pumped to 8 position of preforation tunnel, then turn on pump adjustment, after cleaning well about 3-5 minutes, rotation
Shower nozzle 7 is adjusted to next preforation tunnel 8, and the cleaning after rotating a circle finishes all preforation tunnels 8, then again by control
First perforation spacing of spray (about 10cm) is proposed in mechanism, the above-mentioned two steps rotary course of repetition determines the plane preforation tunnel position respectively
Preforation tunnel is put and cleaned, has been cleaned in perforated interval after all of perforated zone (about well depth 1m), termination of pumping above extracts detection
Cleaning device, completes whole cleaning process.
Wherein, detecting cleaning device includes pressure duct 4, motor and controlling organization 5, flow rate detection instrument 6 and shower nozzle
7, fixed flow rate survey meter 6 and shower nozzle 7 are installed in the bottom of the motor and controlling organization 5, and top is connected by pressure duct 4
It is connected at well head, wherein, flow rate detection instrument 6 is existing known technology, is no longer described in detail.
The present invention can be accurately determined eyelet center, and concentrate clean in place, cleaning performance relatively before local model
Enclose jet cleaning more preferably, principle is：Jet is ejected into preforation tunnel position and is ejected into the flow field that formed at casing wall not
Together, the method that applying detection jet flow field is relatively fixed change in flow a little, judges hole position, and carries out clean in place.
Claims (1)
1. a kind of method for detecting preforation tunnel position and cleaning eyelet, is characterized in that realizing using following steps：
One is to judge preforation tunnel position, will enter the preforation tunnel region of oil well perforation, described detection under detection cleaning device
Cleaning device includes pressure duct（4）, motor and controlling organization（5）, flow rate detection instrument（6）And shower nozzle（7）, the stepping
Motor and controlling organization（5）Bottom install fixed flow rate survey meter（6）And shower nozzle（7）, top passes through pressure duct（4）Connection
To at well head；First by motor, the flow rate detection instrument in flow field is made（6）With shower nozzle（7）It is synchronous to be rotated with constant speed, together
When high-pressure water jet to casing wall（3）Constant flow rate constant speed injection is carried out, by flow rate detection instrument（6）Detection flow velocity becomes
Change, and the curve that flow velocity changes with the anglec of rotation is drawn with computer, if certain section of current curve is unstable, compared with other positions
Change greatly, then show that the jiggly position of current curve is preforation tunnel position, the analysis that rotates a circle draws a plane
All preforation tunnel positions；
Two is cleaning preforation tunnel, is rotated after determining preforation tunnel position within first week, then carries out second week rotary nozzle cleaning work
Industry, rotates fixed angle every time at the preforation tunnel position of above-mentioned determination, is fixed washing and cleaning operation；After cleaning is finished, then
Make flow rate detection instrument rise a preforation tunnel vertical interval with shower nozzle by controlling organization and continue detection preforation tunnel position simultaneously
Cleaning preforation tunnel, until preforation tunnel well section, all cleaning terminates, shut down and on extract detection cleaning device, complete whole
Cleaning process；
Wherein, at the judgement preforation tunnel position of step one, the Perforation Vitrea eye of oil well perforation will be entered under detection cleaning device
The bottom in domain, cleaning finish the preforation tunnel of bottom（8）Afterwards, preforation tunnel spacing 10cm, detection cleaning last layer are above carried
Preforation tunnel, until completing all of preforation tunnel region, preforation tunnel region is well depth 1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610904058.8A CN106545328A (en) | 2014-10-24 | 2014-10-24 | A kind of detection preforation tunnel position the method for cleaning eyelet |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410573995.0A CN104453748B (en) | 2014-10-24 | 2014-10-24 | Method for detecting position of perforation through jet flow field changes and cleaning perforation |
| CN201610904058.8A CN106545328A (en) | 2014-10-24 | 2014-10-24 | A kind of detection preforation tunnel position the method for cleaning eyelet |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410573995.0A Division CN104453748B (en) | 2014-10-24 | 2014-10-24 | Method for detecting position of perforation through jet flow field changes and cleaning perforation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106545328A true CN106545328A (en) | 2017-03-29 |
Family
ID=52900424
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610904704.0A Withdrawn CN106351647A (en) | 2014-10-24 | 2014-10-24 | Hole detection and cleaning method for oil field perforation |
| CN201610904059.2A Withdrawn CN106499382A (en) | 2014-10-24 | 2014-10-24 | A kind of oil field perforation detection and cleaning method |
| CN201610904058.8A Withdrawn CN106545328A (en) | 2014-10-24 | 2014-10-24 | A kind of detection preforation tunnel position the method for cleaning eyelet |
| CN201410573995.0A Active CN104453748B (en) | 2014-10-24 | 2014-10-24 | Method for detecting position of perforation through jet flow field changes and cleaning perforation |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610904704.0A Withdrawn CN106351647A (en) | 2014-10-24 | 2014-10-24 | Hole detection and cleaning method for oil field perforation |
| CN201610904059.2A Withdrawn CN106499382A (en) | 2014-10-24 | 2014-10-24 | A kind of oil field perforation detection and cleaning method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410573995.0A Active CN104453748B (en) | 2014-10-24 | 2014-10-24 | Method for detecting position of perforation through jet flow field changes and cleaning perforation |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN106351647A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108545186B (en) * | 2018-04-16 | 2020-04-28 | 北京中海沃邦能源投资有限公司 | Oil exploration method |
| CN110056319A (en) * | 2019-04-24 | 2019-07-26 | 中国石油大学(华东) | A kind of coal bed gas well does not stop well preforation tunnel dredger |
| CN112234011A (en) * | 2020-09-03 | 2021-01-15 | 北京烁科精微电子装备有限公司 | Position detection device and position detection method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250133A (en) * | 1999-09-30 | 2000-04-12 | 石油大学(华东) | Supersonic pulse reflecting method to measure the depth of perforation |
| CN1609577A (en) * | 2004-11-09 | 2005-04-27 | 中国石化胜利油田有限公司纯梁采油厂 | Method for detecting sleeve fluid-loss point utilizing direct-reading ultrasound flowmete |
| CN1712668A (en) * | 2005-07-13 | 2005-12-28 | 吉林大学 | Magnetic detector of perforation evelet quality for oil well casing pipe |
| WO2006054074A1 (en) * | 2004-11-17 | 2006-05-26 | Schlumberger Holdings Limited | Perforation logging tool and method |
| CN101858209A (en) * | 2010-03-26 | 2010-10-13 | 山东科技大学 | Synchronous detection method of terrane crack distribution of base plate |
| CN201924850U (en) * | 2011-01-24 | 2011-08-10 | 北京格瑞迪斯石油技术有限公司 | Flow type underground leakage point detection device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2240038Y (en) * | 1995-07-26 | 1996-11-13 | 大庆石油管理局采油工艺研究所 | Spiral-flow impact borehole-flushing apparatus |
| US7805247B2 (en) * | 2002-09-09 | 2010-09-28 | Schlumberger Technology Corporation | System and methods for well data compression |
| CN201531231U (en) * | 2009-11-04 | 2010-07-21 | 王晓东 | Multiparameter well-flushing tester |
| CN201687420U (en) * | 2010-04-07 | 2010-12-29 | 中国石油天然气集团公司 | Rotary injection tool applicable to borehole operation in oil and gas field |
| US9453388B2 (en) * | 2012-04-11 | 2016-09-27 | MIT Innovation Sdn Bhd | Apparatus and method to remotely control fluid flow in tubular strings and wellbore annulus |
| CN104806182B (en) * | 2015-04-17 | 2017-03-08 | 西安石油大学 | A kind of waterpower driven rotary jet Cleaning device for pipeline |
-
2014
- 2014-10-24 CN CN201610904704.0A patent/CN106351647A/en not_active Withdrawn
- 2014-10-24 CN CN201610904059.2A patent/CN106499382A/en not_active Withdrawn
- 2014-10-24 CN CN201610904058.8A patent/CN106545328A/en not_active Withdrawn
- 2014-10-24 CN CN201410573995.0A patent/CN104453748B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250133A (en) * | 1999-09-30 | 2000-04-12 | 石油大学(华东) | Supersonic pulse reflecting method to measure the depth of perforation |
| CN1609577A (en) * | 2004-11-09 | 2005-04-27 | 中国石化胜利油田有限公司纯梁采油厂 | Method for detecting sleeve fluid-loss point utilizing direct-reading ultrasound flowmete |
| WO2006054074A1 (en) * | 2004-11-17 | 2006-05-26 | Schlumberger Holdings Limited | Perforation logging tool and method |
| CN1712668A (en) * | 2005-07-13 | 2005-12-28 | 吉林大学 | Magnetic detector of perforation evelet quality for oil well casing pipe |
| CN101858209A (en) * | 2010-03-26 | 2010-10-13 | 山东科技大学 | Synchronous detection method of terrane crack distribution of base plate |
| CN201924850U (en) * | 2011-01-24 | 2011-08-10 | 北京格瑞迪斯石油技术有限公司 | Flow type underground leakage point detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106499382A (en) | 2017-03-15 |
| CN106351647A (en) | 2017-01-25 |
| CN104453748B (en) | 2017-02-15 |
| CN104453748A (en) | 2015-03-25 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170329 |
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| WW01 | Invention patent application withdrawn after publication |