CN106351647A - Hole detection and cleaning method for oil field perforation - Google Patents
Hole detection and cleaning method for oil field perforation Download PDFInfo
- Publication number
- CN106351647A CN106351647A CN201610904704.0A CN201610904704A CN106351647A CN 106351647 A CN106351647 A CN 106351647A CN 201610904704 A CN201610904704 A CN 201610904704A CN 106351647 A CN106351647 A CN 106351647A
- Authority
- CN
- China
- Prior art keywords
- cleaning
- hole
- preforation tunnel
- flow rate
- shower nozzle
- 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.)
- Withdrawn
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 62
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000008859 change Effects 0.000 claims abstract description 9
- 230000008520 organization Effects 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000003129 oil well Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract 4
- 230000000694 effects Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000001595 flow curve Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
Abstract
The invention relates to a hole detection and cleaning method for oil field perforation. The technical scheme is 1, judging the position of a hole: a detection and cleaning device is fed into a hole region for oil field perforation; flow fields which are formed at a hole perforation position where jet flow is injected and a position, where the jet flow is injected, on a sleeve wall are different; a flow rate detector is used for detecting a change of flow speed of a fixed point in the jet flow field so as to judge the position of the hole; 2, cleaning the hole: after the position of the hole is determined by rotation for a first round, second-round rotation spraying head cleaning work is carried out; a spraying head is rotated at a fixed angle to the determined position of the hole at each time for fixed cleaning work; after the cleaning is completed, the spraying head is lifted up to clean the whole hole region. The hole detection and cleaning method has the beneficial effects that the central position of the hole can be determined more precisely; the determination of the position of the hole and fixed-point cleaning are completed by one set of tools; finite hydraulic energy can be fully used for hole cleaning; therefore, compared with the conventional local spraying cleaning, the hole detection and cleaning method has the advantages that the cleaning effect is better and the work is simpler.
Description
Technical field
The present invention relates to a kind of oil field perforation detects and cleaning method, it is related to a kind of oil field perforation eyelet and detects and cleaning side
Method.
Background technology
Perforating oil gas well is a key technology in Petroleum finance, is also 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
Multiple infringements.After lined-cavity charge blast, formation rock is crushed and be compacted by high energy gas, and by rock particle from shell hole region
Clamp-on the oil-gas Layer of surrounding, formed around shell hole and there are about the thick compaction band of 12.6mm, in compaction band its permeability well below
The permeability of prime stratum, this can block formation flow duct, reduces 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 after perforation, eyelet cleans
Magnitude relation is to the size of field output.At present, site perforation eyelet cleaning technique is to carry out office using rotary nozzle to perforated interval
Portion's rotary spray wash, this technology can not accurately determine the position of eyelet it is impossible to limited jet energy targetedly should
It is carried out for eyelet position, ultimately results 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.
Content of the invention
The purpose of the present invention is aiming at the drawbacks described above of prior art presence, provide a kind of oil field perforation eyelet to detect and
Cleaning method, can be accurately determined eyelet center, and concentrates clean in place, cleaning performance relatively subrange injection before
Cleaning is more preferably.
Its technical scheme is to be realized using following steps:
One is to judge hole position, will detect and enter the eyelet area of oil well perforation under cleaning device, described detection cleaning device
Including pressure duct, motor and controlling organization, flow rate detection instrument and shower nozzle, the bottom of described motor and controlling organization
Fixed flow rate survey meter and shower nozzle are installed, top is connected at well head by pressure duct；First pass through motor, make flow field
Flow rate detection instrument and shower nozzle synchronous with constant speed rotation, high-pressure water jet carries out the constant speed of constant flow rate to casing wall simultaneously
Degree injection, detects change in flow by flow rate detection instrument, and draws, with computer, the curve that flow velocity changes with the anglec of rotation, if certain
Section current curve is unstable, changes greatly compared with other positions, then show that this position is hole position, rotate a circle and analyze
Go out all hole position of this plane；
Two is cleaning eyelet, after rotation determines hole position in 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 finishes, then made by controlling organization
The perforation vertical interval that rises flow rate detection instrument and shower nozzle continues to detect hole position and clean eyelet, until perforated interval is complete
Portion cleaning terminate, shut down and on extract detection cleaning device, complete whole cleaning process.
Above-mentioned shower nozzle adopts the high-pressure water jet shower nozzle of a diameter of 2mm, and is less than preforation tunnel diameter.
Above-mentioned flow rate detection instrument and shower nozzle synchronous rotary, detect flow field velocity change.
The detection during unlatching of above-mentioned pressure duct is pumped as 4.5 5.5mpa, and cleaning during cleaning is pumped and is
30mpa, one perforated hole of cleaning is 35 minutes between at the moment.
When judging hole position, the bottom of the eyelet area entering oil well perforation under cleaning device will be detected, cleaning finishes
After the preforation tunnel of bottom, above putting forward perforation spacing 10cm, detecting cleaning last layer perforation, until completing all of perforation area
Domain, perforated zone is well depth 1m.
The invention has the beneficial effects as follows: the present invention is changed determining the position of eyelet by detecting jet flow field, 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, and therefore more preferably, operation is more for cleaning performance relatively subrange jet cleaning before
Simply.
Brief description
Accompanying drawing 1 is the structural representation that the present invention detects cleaning perforation；
Accompanying drawing 2 is the FB(flow block) that the present invention detects cleaning method；
Upper in figure: the borehole wall 1, cement sheath 2, casing wall 3, pressure duct 4, motor and controlling organization 5, flow rate detection instrument 6 and
Shower nozzle 7, preforation tunnel 8.
Specific embodiment
In conjunction with accompanying drawing, the invention will be further described:
The present invention adopts following steps to realize: select a kind of high-pressure water jet shower nozzle 7 of a diameter of 2mm, straight less than preforation tunnel 8
Footpath (about 10mm), preforation tunnel 8 is located at the perforated zone of casing wall 3 bottom, is 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, visit
Survey flow field velocity change, the upper end of pressure duct 4 is connected with wellhead assembly, enters under the detection cleaning device that the said equipment is formed
Perforation borehole bottom, concrete operation step, as shown in Fig. 2 the detection cleaning device position of adjustment down-hole, turn on pump, is pumped as detecting
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
Survey instrument 6 and detect flow field velocity change, and pass data to the computer on ground, draw change in flow curve.Shower nozzle 7 rotates
After one week, stop motor, analysis curvilinear motion draws the particular location of preforation tunnel 8, after analysis finishes, rotary nozzle 7
To preforation tunnel 8 position, then turn on pump adjustment is pumped to cleaning pump pressure (about 30mpa), after cleaning well about 3-5 minute, rotation
Shower nozzle 7 is adjusted to next preforation tunnel 8, and cleaning after rotating a circle finishes all preforation tunnels 8, then passes through to control again
First perforation spacing of spray (about 10cm) is carried on mechanism, repeats above-mentioned two step rotary courses and determine this plane preforation tunnel position respectively
Put and clean preforation tunnel, after having cleaned all of perforated zone in perforated interval, (about well depth 1m), termination of pumping, above extract detection
Cleaning device, completes whole cleaning process.
Wherein, detect cleaning device and include 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 described motor and controlling organization 5, and pressure duct 4 is passed through even in top
It is connected at well head, wherein, flow rate detection instrument 6 is existing known technology, no longer describes in detail.
The present invention can be accurately determined eyelet center, and concentrates clean in place, cleaning performance relatively before local model
Enclose jet cleaning more preferably, principle by: jet is ejected into preforation tunnel position and is ejected into the flow field being formed at casing wall not
With, the method that applying detection jet flow field is relatively fixed change in flow a little, to judge hole position, and to carry out clean in place.
Claims (1)
1. a kind of oil field perforation eyelet detects and cleaning method, it is characterized in that realizing using following steps:
One is to judge preforation tunnel position, will detect and enter the preforation tunnel region of oil well perforation under cleaning device, described detection
Cleaning device includes pressure duct (4), motor and controlling organization (5), flow rate detection instrument (6) and shower nozzle (7), described stepping
Fixed flow rate survey meter (6) and shower nozzle (7) are installed in the bottom of motor and controlling organization (5), and top is passed through pressure duct (4) and connected
To at well head；First pass through motor, make the flow rate detection instrument (6) in flow field and shower nozzle (7) synchronous with constant speed rotation, same
When high-pressure water jet constant flow rate constant speed injection is carried out to casing wall (3), by flow rate detection instrument (6) detect flow velocity become
Change, and draw, with computer, the curve that flow velocity changes with the anglec of rotation, 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, after rotation determines preforation tunnel position in 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 finishes, then
Make flow rate detection instrument and shower nozzle rise a preforation tunnel vertical interval by controlling organization to continue to detect 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；
Described shower nozzle adopts the high-pressure water jet shower nozzle of a diameter of 2mm, and is less than preforation tunnel diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610904704.0A CN106351647A (en) | 2014-10-24 | 2014-10-24 | Hole detection and cleaning method for oil field perforation |
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 |
| CN201610904704.0A CN106351647A (en) | 2014-10-24 | 2014-10-24 | Hole detection and cleaning method for oil field perforation |
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 |
|---|---|
| CN106351647A true CN106351647A (en) | 2017-01-25 |
Family
ID=52900424
Family Applications (4)
| 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 |
| 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 |
Family Applications Before (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 |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN104453748B (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 (5)
| 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 |
| CN1250133A (en) * | 1999-09-30 | 2000-04-12 | 石油大学(华东) | Supersonic pulse reflecting method to measure the depth of perforation |
| 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 |
| CA2871119A1 (en) * | 2012-04-11 | 2013-10-17 | Mit Innovation Sdn. Bhd | Apparatus and method to remotely control fluid flow in tubular strings and wellbore annulus |
| CN104806182A (en) * | 2015-04-17 | 2015-07-29 | 西安石油大学 | Hydraulic rotating jet flow blockage remover |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7805247B2 (en) * | 2002-09-09 | 2010-09-28 | Schlumberger Technology Corporation | System and methods for well data compression |
| CN100359130C (en) * | 2004-11-09 | 2008-01-02 | 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 |
| GB2420357B (en) * | 2004-11-17 | 2008-05-21 | Schlumberger Holdings | Perforating logging tool |
| CN1712668A (en) * | 2005-07-13 | 2005-12-28 | 吉林大学 | Magnetic detector of perforation evelet quality for oil well casing pipe |
| CN201531231U (en) * | 2009-11-04 | 2010-07-21 | 王晓东 | Multiparameter well-flushing tester |
| CN101858209B (en) * | 2010-03-26 | 2013-04-03 | 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 |
-
2014
- 2014-10-24 CN CN201410573995.0A patent/CN104453748B/en active Active
- 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
Patent Citations (5)
| 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 |
| CN1250133A (en) * | 1999-09-30 | 2000-04-12 | 石油大学(华东) | Supersonic pulse reflecting method to measure the depth of perforation |
| 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 |
| CA2871119A1 (en) * | 2012-04-11 | 2013-10-17 | Mit Innovation Sdn. Bhd | Apparatus and method to remotely control fluid flow in tubular strings and wellbore annulus |
| CN104806182A (en) * | 2015-04-17 | 2015-07-29 | 西安石油大学 | Hydraulic rotating jet flow blockage remover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104453748A (en) | 2015-03-25 |
| CN106499382A (en) | 2017-03-15 |
| CN104453748B (en) | 2017-02-15 |
| CN106545328A (en) | 2017-03-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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: 20170125 |
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| WW01 | Invention patent application withdrawn after publication |